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Vol. 16, No 3, 2024
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2024, 16(3): 1-7.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.01
Abstract:
In recent years, thanks to the continuous development of concrete 3D printing technology, the quality of printed products has attracted more and more attention. The geometric characteristics of printed products have become an important index to evaluate the printing quality. Aiming at solving a series of problems existing in the current 3D printing concrete geometric feature extraction methods e.g. complex process, limited precision and lack of evaluation indicators, this paper designs an automatic extraction method of 3D printing concrete geometric features based on machine vision. Firstly, the camera array deployment method is used to obtain the original image which is orthodontic to improve the image quality. Then, the geometric features of printed products are extracted by semantic segmentation model U-Net, after which the results are optimized. Finally, through the quantitative index value, it is visualized and the print result is evaluated. Experiments have shown that the geometric feature automatic extraction method proposed in this paper has significant advantages such as fast speed and high accuracy. In addition, systematic evaluation indicators can provide reference for the quality evaluation of concrete 3D printing.
In recent years, thanks to the continuous development of concrete 3D printing technology, the quality of printed products has attracted more and more attention. The geometric characteristics of printed products have become an important index to evaluate the printing quality. Aiming at solving a series of problems existing in the current 3D printing concrete geometric feature extraction methods e.g. complex process, limited precision and lack of evaluation indicators, this paper designs an automatic extraction method of 3D printing concrete geometric features based on machine vision. Firstly, the camera array deployment method is used to obtain the original image which is orthodontic to improve the image quality. Then, the geometric features of printed products are extracted by semantic segmentation model U-Net, after which the results are optimized. Finally, through the quantitative index value, it is visualized and the print result is evaluated. Experiments have shown that the geometric feature automatic extraction method proposed in this paper has significant advantages such as fast speed and high accuracy. In addition, systematic evaluation indicators can provide reference for the quality evaluation of concrete 3D printing.
2024, 16(3): 8-12.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.02
Abstract:
The automatic calculation system for pipeline carbon emissions is of great significance for predicting carbon emissions and researching pathways to reduce carbon emissions during the pipeline design process. Aiming at carbon neutrality goals and meeting up with "Building Carbon Emission Calculation Standard," the main pipeline materials and their carbon emission factors are summarized and compiled in this paper. According to the BIM modeling specifications, corresponding calculation standards are specified. Then, based on the data of pipe quantity, specifications, materials, etc., in the Revit model, the carbon emission factor method is adopted, and the functionality of automatically calculating pipeline carbon emissions is implemented through secondary development by using C# + RevitAPI. This system can help designers quickly obtain relatively accurate estimates of pipeline carbon emissions and optimize carbon emissions during the design process. Therefore, the system has broad application prospect and market value.
The automatic calculation system for pipeline carbon emissions is of great significance for predicting carbon emissions and researching pathways to reduce carbon emissions during the pipeline design process. Aiming at carbon neutrality goals and meeting up with "Building Carbon Emission Calculation Standard," the main pipeline materials and their carbon emission factors are summarized and compiled in this paper. According to the BIM modeling specifications, corresponding calculation standards are specified. Then, based on the data of pipe quantity, specifications, materials, etc., in the Revit model, the carbon emission factor method is adopted, and the functionality of automatically calculating pipeline carbon emissions is implemented through secondary development by using C# + RevitAPI. This system can help designers quickly obtain relatively accurate estimates of pipeline carbon emissions and optimize carbon emissions during the design process. Therefore, the system has broad application prospect and market value.
2024, 16(3): 13-18.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.03
Abstract:
3D laser scanning technology is applied to assist the dimensional quality inspection of houses, which can solve the problems of high labor consumption and low detection rate of traditional manual measurement methods. However, the collected point cloud data usually need to be manually segmented to extract the inspection plane, which is inefficient. Therefore, this paper proposes an engineering dimensional quality inspection method based on semantic segmentation of laser point cloud, including four aspects: point cloud data simplification, intelligent plane segmentation, intelligent semantic recognition, and dimensional quality inspection. This method effectively realizes the automatic segmentation of the point cloud data of the houses, and can automatically measure the indoor top and bottom plate elevation difference, door and window opening dimensions and other indexes based on the 3D point cloud data, which is expected to improve the efficiency and accuracy of the acceptance work of the quality of construction projects.
3D laser scanning technology is applied to assist the dimensional quality inspection of houses, which can solve the problems of high labor consumption and low detection rate of traditional manual measurement methods. However, the collected point cloud data usually need to be manually segmented to extract the inspection plane, which is inefficient. Therefore, this paper proposes an engineering dimensional quality inspection method based on semantic segmentation of laser point cloud, including four aspects: point cloud data simplification, intelligent plane segmentation, intelligent semantic recognition, and dimensional quality inspection. This method effectively realizes the automatic segmentation of the point cloud data of the houses, and can automatically measure the indoor top and bottom plate elevation difference, door and window opening dimensions and other indexes based on the 3D point cloud data, which is expected to improve the efficiency and accuracy of the acceptance work of the quality of construction projects.
2024, 16(3): 19-24.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.04
Abstract:
Beijing Sub-Central Station is the future transportation center in Beijing. After its completion, the Station will become the largest underground comprehensive transportation hub in Asia. Its construction will deeply integrate modern information technologies e.g. BIM technology with traditional engineering construction technologies, which can solve various problems in the construction process and realize the innovation of intelligent construction technology. This paper analyzes the six major problems of difficulties faced in the construction of Beijing Sub-Central Station, proposes solutions based on BIM, and describes the basic application of BIM technology and innovative applications of intelligent construction based on BIM technology, especially digital twin which is an intelligent construction platform with the core concept. At the end, the paper summarizes the goals achieved by this project, which can provide a reference for future construction projects and applications of intelligent construction technology.
Beijing Sub-Central Station is the future transportation center in Beijing. After its completion, the Station will become the largest underground comprehensive transportation hub in Asia. Its construction will deeply integrate modern information technologies e.g. BIM technology with traditional engineering construction technologies, which can solve various problems in the construction process and realize the innovation of intelligent construction technology. This paper analyzes the six major problems of difficulties faced in the construction of Beijing Sub-Central Station, proposes solutions based on BIM, and describes the basic application of BIM technology and innovative applications of intelligent construction based on BIM technology, especially digital twin which is an intelligent construction platform with the core concept. At the end, the paper summarizes the goals achieved by this project, which can provide a reference for future construction projects and applications of intelligent construction technology.
2024, 16(3): 25-29.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.05
Abstract:
Prefabricated concrete frame structure refers to a concrete structure constructed entirely or partially using prefabricated components for frame beams and columns. This article studies the parametric modeling of prefabricated concrete frame structures. Using existing flat construction drawings, the geometric and reinforcement data of the components are extracted, and a three-dimensional parametric model containing the reinforcement data of the components is established. The code based on PSO (Particle Swarm Optimization) and GA (Genetic Algorithm) is written to solve and achieve automatic arrangement of steel bars in the beam column node area. The test results show that GA can significantly improve the efficiency of automatic steel bar layout.
Prefabricated concrete frame structure refers to a concrete structure constructed entirely or partially using prefabricated components for frame beams and columns. This article studies the parametric modeling of prefabricated concrete frame structures. Using existing flat construction drawings, the geometric and reinforcement data of the components are extracted, and a three-dimensional parametric model containing the reinforcement data of the components is established. The code based on PSO (Particle Swarm Optimization) and GA (Genetic Algorithm) is written to solve and achieve automatic arrangement of steel bars in the beam column node area. The test results show that GA can significantly improve the efficiency of automatic steel bar layout.
2024, 16(3): 30-35.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.06
Abstract:
Thanks to the rapid development and large-scale application of technologies e.g. the Internet of Things, mobile internet, and big data, intelligent construction has led a new round of construction industry revolution. However, in the field of engineering project construction, there are still many problems e.g. low collaboration efficiency, difficulty in searching engineering data, slow information synchronization, and difficulty in sharing data information among all parties etc. BIM technology, based on three-dimensional geometric models, realizes the visualization management of engineering data in time and space in digital form, which is a method to handle current engineering project management. Taking the second phase of the Futian Water Purification Plant project as an example, this paper elaborated on the application requirements and organizational framework of BIM, and clarified the application advantages of BIM construction management platform in the entire lifecycle of engineering projects. Moreover, a detailed analysis was conducted on the basic functions of the platform including BIM applications, progress, quality, safety, collaborative office, smart construction sites, and image and text management. What's more, the paper explored some optimization solutions for digitalization and informatization of water purification plants, which were found available in reducing design changes, shortening construction periods, and improving construction efficiency.
Thanks to the rapid development and large-scale application of technologies e.g. the Internet of Things, mobile internet, and big data, intelligent construction has led a new round of construction industry revolution. However, in the field of engineering project construction, there are still many problems e.g. low collaboration efficiency, difficulty in searching engineering data, slow information synchronization, and difficulty in sharing data information among all parties etc. BIM technology, based on three-dimensional geometric models, realizes the visualization management of engineering data in time and space in digital form, which is a method to handle current engineering project management. Taking the second phase of the Futian Water Purification Plant project as an example, this paper elaborated on the application requirements and organizational framework of BIM, and clarified the application advantages of BIM construction management platform in the entire lifecycle of engineering projects. Moreover, a detailed analysis was conducted on the basic functions of the platform including BIM applications, progress, quality, safety, collaborative office, smart construction sites, and image and text management. What's more, the paper explored some optimization solutions for digitalization and informatization of water purification plants, which were found available in reducing design changes, shortening construction periods, and improving construction efficiency.
2024, 16(3): 36-40.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.07
Abstract:
During the construction of large-scale transportation hubs, steel structure projects are urgently needed to overcome the difficulties of missing information in flow transmission, poor traceability and low management efficiency. This paper proposes a method to build a whole-life management system for steel structure based on BIM and other key technologies of intelligent construction, which realizes the quantitative pricing, output value management, whole-life tracking of components and progress visualization management of BIM model, and solves the problems existing in the process of construction of steel structure projects. The R & D results have been applied in Xiamen New North Station large-scale transportation hub project, which closely associates the BIM model with the design and construction management process, realizes the dynamic and intelligent control of the project construction process, which can improve the energy efficiency of project progress, quality and safety control. The project provides replicable informationization, digitalization and refinement experience for steel structure management of large-scale transportation hub projects in China, which is of significance for wide popularization.
During the construction of large-scale transportation hubs, steel structure projects are urgently needed to overcome the difficulties of missing information in flow transmission, poor traceability and low management efficiency. This paper proposes a method to build a whole-life management system for steel structure based on BIM and other key technologies of intelligent construction, which realizes the quantitative pricing, output value management, whole-life tracking of components and progress visualization management of BIM model, and solves the problems existing in the process of construction of steel structure projects. The R & D results have been applied in Xiamen New North Station large-scale transportation hub project, which closely associates the BIM model with the design and construction management process, realizes the dynamic and intelligent control of the project construction process, which can improve the energy efficiency of project progress, quality and safety control. The project provides replicable informationization, digitalization and refinement experience for steel structure management of large-scale transportation hub projects in China, which is of significance for wide popularization.
2024, 16(3): 41-45.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.08
Abstract:
The traditional planning method, the Critical Path Method(CPM)is deficient in the management of continuous production flow and resource allocation. Location-based management system (LBMS) can compensate for such deficiencies. Based on actual project cases, this paper analyzed and improved CPM schedule by applying LBMS with the authors' independent development. The result of the study showed that LBMS could establish continuous workflows, balance production rate, optimize resources allocation without much interruptions or affecting project duration. Furthermore, LBMS schedules were optimized with fewer planning elements, hence its flowline graph had a concise and intuitive effect, facilitated communication among all parties.
The traditional planning method, the Critical Path Method(CPM)is deficient in the management of continuous production flow and resource allocation. Location-based management system (LBMS) can compensate for such deficiencies. Based on actual project cases, this paper analyzed and improved CPM schedule by applying LBMS with the authors' independent development. The result of the study showed that LBMS could establish continuous workflows, balance production rate, optimize resources allocation without much interruptions or affecting project duration. Furthermore, LBMS schedules were optimized with fewer planning elements, hence its flowline graph had a concise and intuitive effect, facilitated communication among all parties.
2024, 16(3): 46-51.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.09
Abstract:
BIM top down design is the ideal mode in the design stage. However, there are some problems e.g. data separation between calculation model and drawing model, large workload of input of reinforcement parameters, and inadequate plugins for Revit itself. This paper explores the process of automatic beam reinforcement, which were splitting by span, importing calculation result, calculate reinforcement case of beam, tagging beam reinforcement result, completing additional transverse and stirrup reinforcement, compliance inspection, etc. This method can realize the strong connection between calculation model and drawing model, high degree of automation, and is easy to check and customize the rule reinforcement. The input of beam reinforcement improves BIM data and makes the BIM deliverables more complete, which is more conducive to downstream major.
BIM top down design is the ideal mode in the design stage. However, there are some problems e.g. data separation between calculation model and drawing model, large workload of input of reinforcement parameters, and inadequate plugins for Revit itself. This paper explores the process of automatic beam reinforcement, which were splitting by span, importing calculation result, calculate reinforcement case of beam, tagging beam reinforcement result, completing additional transverse and stirrup reinforcement, compliance inspection, etc. This method can realize the strong connection between calculation model and drawing model, high degree of automation, and is easy to check and customize the rule reinforcement. The input of beam reinforcement improves BIM data and makes the BIM deliverables more complete, which is more conducive to downstream major.
2024, 16(3): 52-59.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.10
Abstract:
Browser-based Web3D applications have become one of the main carriers of digital displays and applications after the launch of the Digital China Plan. The current mainstream Web3D engines are encapsulated based on WebGL. However, there are problems in calling GPU computing and rendering capabilities, which fails to support new-generation graphics and computing technologies e.g. Ray Tracing and meet the needs of future Web3D applications. Therefore, this paper introduces and explores a new Web3D graphics API WebGPU. The results in the paper show that the performance of the original unoptimized WebGPU is far superior to WebGL. Moreover, it excels in the good rendering computer system, low resource consumption, multithreading support, strong underlying compatibility, and excellent performance. It has a high degree of fit with the engineering industry, which can be a good option for the future digital China-related engineering industry platform Web3D graphics API.
Browser-based Web3D applications have become one of the main carriers of digital displays and applications after the launch of the Digital China Plan. The current mainstream Web3D engines are encapsulated based on WebGL. However, there are problems in calling GPU computing and rendering capabilities, which fails to support new-generation graphics and computing technologies e.g. Ray Tracing and meet the needs of future Web3D applications. Therefore, this paper introduces and explores a new Web3D graphics API WebGPU. The results in the paper show that the performance of the original unoptimized WebGPU is far superior to WebGL. Moreover, it excels in the good rendering computer system, low resource consumption, multithreading support, strong underlying compatibility, and excellent performance. It has a high degree of fit with the engineering industry, which can be a good option for the future digital China-related engineering industry platform Web3D graphics API.
2024, 16(3): 60-64.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.11
Abstract:
The section steel skeleton is built in the ordinary light steel keel partition wall to meet the performance requirements of the ultra-high partition wall. However, as for the large volume and complex structure, it is difficult to realize the accurate calculation of engineering quantities. Therefore, combined with the "Light Steel Keel Gypsum Board Partition Wall and Ceiling" (07CJ03-1), this paper explores the arrangement law of keel without relying on the three-dimensional model and further creates WPF application by employing C# language to compile measurement rules, which finally realizes the rapid calculation of the engineering quantity of ultra-high light steel keel partition wall and improves the takeoff efficiency. The data of an actual project is extracted in the paper. Comparing the exported engineering quantity with the consumption calculated according to the specification, the error of the results meets the requirements.
The section steel skeleton is built in the ordinary light steel keel partition wall to meet the performance requirements of the ultra-high partition wall. However, as for the large volume and complex structure, it is difficult to realize the accurate calculation of engineering quantities. Therefore, combined with the "Light Steel Keel Gypsum Board Partition Wall and Ceiling" (07CJ03-1), this paper explores the arrangement law of keel without relying on the three-dimensional model and further creates WPF application by employing C# language to compile measurement rules, which finally realizes the rapid calculation of the engineering quantity of ultra-high light steel keel partition wall and improves the takeoff efficiency. The data of an actual project is extracted in the paper. Comparing the exported engineering quantity with the consumption calculated according to the specification, the error of the results meets the requirements.
2024, 16(3): 65-70.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.12
Abstract:
Over-segmentation caused by conventional RANSAC plane segmentation and extraction frequently occurs in oblique photographic point cloud plane segmentation of complex building shapes. In this paper, combined with the characteristics of building point clouds in oblique photography, a single building key plane segmentation and extraction method based on the statistical values of architectural features within the community is proposed. Firstly, the planes were merged according to the statistical values of the distance and angle of the building planes in the community. Secondly, the vertical plane was optimized according to the slope statistics. Thirdly, the plane was filtered and optimized according to the statistical value of plane point density and the characteristic structure. Finally, the optimal extraction of key building planes was realized. It has been verified that this method has an accuracy rate of 95.80% and a recall rate of 96.21% for the extraction of key feature plane information e.g. the bottom plane, wall, and roof of a single building, which can provide the basic data for the subsequent automatic construction of building information modeling.
Over-segmentation caused by conventional RANSAC plane segmentation and extraction frequently occurs in oblique photographic point cloud plane segmentation of complex building shapes. In this paper, combined with the characteristics of building point clouds in oblique photography, a single building key plane segmentation and extraction method based on the statistical values of architectural features within the community is proposed. Firstly, the planes were merged according to the statistical values of the distance and angle of the building planes in the community. Secondly, the vertical plane was optimized according to the slope statistics. Thirdly, the plane was filtered and optimized according to the statistical value of plane point density and the characteristic structure. Finally, the optimal extraction of key building planes was realized. It has been verified that this method has an accuracy rate of 95.80% and a recall rate of 96.21% for the extraction of key feature plane information e.g. the bottom plane, wall, and roof of a single building, which can provide the basic data for the subsequent automatic construction of building information modeling.
2024, 16(3): 71-76.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.13
Abstract:
In order to improve the efficiency of the underground pipe network of the runway in the international metropolis, the BIM clash technology is combined with the characteristics of the construction of the underground pipe network of the airport. From the experience of the construction practice of the three runways project of the Hong Kong International Airport, this paper establishes a standardized clash coordination work flow and clash detection rules for the underground pipe network of the airport runway, and then the clash detection, coordination and scheme adjustment of the underground pipe network system of the airport runway are carried out according to these rules and processes. This paper also manages to accurately record and track the state and scheme of each clash conflict resolution in the form of model, table and mutual verification, so as to realize the clash resolution status and record real-time viewable. After the clash and scheme adjustment, the construction clash coordination deepening map and adjustment record are output according to the powerful drawing characteristics of Civil 3D software. With design approval and confirmation, it is used as a formal construction deepening drawing to directly guide the on-site construction, thus effectively improving the construction coordination efficiency of the airport underground pipe network, reducing the project rework and material waste, and reducing the project construction cost.
In order to improve the efficiency of the underground pipe network of the runway in the international metropolis, the BIM clash technology is combined with the characteristics of the construction of the underground pipe network of the airport. From the experience of the construction practice of the three runways project of the Hong Kong International Airport, this paper establishes a standardized clash coordination work flow and clash detection rules for the underground pipe network of the airport runway, and then the clash detection, coordination and scheme adjustment of the underground pipe network system of the airport runway are carried out according to these rules and processes. This paper also manages to accurately record and track the state and scheme of each clash conflict resolution in the form of model, table and mutual verification, so as to realize the clash resolution status and record real-time viewable. After the clash and scheme adjustment, the construction clash coordination deepening map and adjustment record are output according to the powerful drawing characteristics of Civil 3D software. With design approval and confirmation, it is used as a formal construction deepening drawing to directly guide the on-site construction, thus effectively improving the construction coordination efficiency of the airport underground pipe network, reducing the project rework and material waste, and reducing the project construction cost.
2024, 16(3): 77-81.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.14
Abstract:
Graphic statics consists of interactive force diagram and form diagram. Form diagram generated by force diagram plays a very positive role in structural form design in protocol stage. Firstly, this paper explores that the prototype of force diagram should have an appropriate abstract level, which is moderately abstract concept representation according to the theory of cognitive psychology. Secondly, it constructs its 2D lineage from 5 aspects, e.g. the direction of structural internal force, the number of supports, the component form, the load distribution and the load decomposition. At last, this paper determines the number of parameters and figures out the relations between parameters and writes a program to generate many structural forms. This paper aims at the improvement of interaction level, which makes it easier to operate force diagram when architects conceive projects.
Graphic statics consists of interactive force diagram and form diagram. Form diagram generated by force diagram plays a very positive role in structural form design in protocol stage. Firstly, this paper explores that the prototype of force diagram should have an appropriate abstract level, which is moderately abstract concept representation according to the theory of cognitive psychology. Secondly, it constructs its 2D lineage from 5 aspects, e.g. the direction of structural internal force, the number of supports, the component form, the load distribution and the load decomposition. At last, this paper determines the number of parameters and figures out the relations between parameters and writes a program to generate many structural forms. This paper aims at the improvement of interaction level, which makes it easier to operate force diagram when architects conceive projects.
2024, 16(3): 82-86.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.15
Abstract:
Power generation engineering is a traditional industry in China, and the digital process is relatively lagging behind. At present, BIM related technologies are rarely applied in the research feasibility, design stage, construction stage, acceptance stage, operation stage and maintenance stage and other stages of power generation engineering projects. Based on BIMBase, a 3D graphics platform engine made in China, this paper proposes and verifies a method for deepening quality inspection of power generation engineering life cycle data according to series data specifications and delivery specifications of power generation engineering. Through processes of data integration, built-in standards, engineering verification, data repair, and results export, the power generation project can be realized in a systematic, streamlined, standardized and automatic quality check, which can effectively improve the checking efficiency and reduce the error rate. The quality inspection and delivery tools provided in the paper can be applied to the entire life cycle of the engineering information model to ensure that the owner receives the high-quality information model and lay the data foundation for application during construction and operation.
Power generation engineering is a traditional industry in China, and the digital process is relatively lagging behind. At present, BIM related technologies are rarely applied in the research feasibility, design stage, construction stage, acceptance stage, operation stage and maintenance stage and other stages of power generation engineering projects. Based on BIMBase, a 3D graphics platform engine made in China, this paper proposes and verifies a method for deepening quality inspection of power generation engineering life cycle data according to series data specifications and delivery specifications of power generation engineering. Through processes of data integration, built-in standards, engineering verification, data repair, and results export, the power generation project can be realized in a systematic, streamlined, standardized and automatic quality check, which can effectively improve the checking efficiency and reduce the error rate. The quality inspection and delivery tools provided in the paper can be applied to the entire life cycle of the engineering information model to ensure that the owner receives the high-quality information model and lay the data foundation for application during construction and operation.
2024, 16(3): 87-92.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.16
Abstract:
With the continuous development of information technology and the increasing of collaborative work, the traditional collaborative design can no longer meet the needs of complex engineering projects in modern buildings. In order to fill the gap of collaborative platform under EPC mode, this paper proposes and implements a collaborative design platform based on one-cloud and three-terminal architecture, which aims to solve the problem of multi-user, cross-platform real-time collaborative design. This paper mainly designs and develops the architecture of one-cloud and three-terminal. Through the deployment of private cloud platform, it realizes the multi-terminal collaborative design in plug-in end, Web end and mobile end, significantly improves the design efficiency and collaboration ability, reduces the communication cost and error rate, provides strong support for the development of architectural design industry, and has wide application prospects and promotion value.
With the continuous development of information technology and the increasing of collaborative work, the traditional collaborative design can no longer meet the needs of complex engineering projects in modern buildings. In order to fill the gap of collaborative platform under EPC mode, this paper proposes and implements a collaborative design platform based on one-cloud and three-terminal architecture, which aims to solve the problem of multi-user, cross-platform real-time collaborative design. This paper mainly designs and develops the architecture of one-cloud and three-terminal. Through the deployment of private cloud platform, it realizes the multi-terminal collaborative design in plug-in end, Web end and mobile end, significantly improves the design efficiency and collaboration ability, reduces the communication cost and error rate, provides strong support for the development of architectural design industry, and has wide application prospects and promotion value.
2024, 16(3): 93-98.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.17
Abstract:
The design type of large-scale museum buildings is comprehensive and professional building, therefore numerous factors must be considered. Fire protection engineering is a crucial component of this design process. Given the unique usage function and spatial demands, current specifications may prove inadequate or unable to accommodate evolving technologies. Therefore, specialized fire protection designs must be developed and demonstrated. In the event of a fire, it is essential to fully consider the storage and protection of cultural relics, audience safety and evacuation, equipment control and preservation, and minimizing operational disruption. To ensure the scientific validity and feasibility of the design, it is necessary to conduct fire scene simulation and fire safety analysis. Taking the project in the North Branch of the Palace Museum as a case study, this paper elaborates on the technical process of fire scene simulation and fire safety analysis. The Topics covered in the paper include: fire design, establishing the fire scene, setting evacuation scenarios, conducting evacuation simulation analysis, simulating smoke dispersion, and making safety assessments, which can provide a technical reference for similar types of building design.
The design type of large-scale museum buildings is comprehensive and professional building, therefore numerous factors must be considered. Fire protection engineering is a crucial component of this design process. Given the unique usage function and spatial demands, current specifications may prove inadequate or unable to accommodate evolving technologies. Therefore, specialized fire protection designs must be developed and demonstrated. In the event of a fire, it is essential to fully consider the storage and protection of cultural relics, audience safety and evacuation, equipment control and preservation, and minimizing operational disruption. To ensure the scientific validity and feasibility of the design, it is necessary to conduct fire scene simulation and fire safety analysis. Taking the project in the North Branch of the Palace Museum as a case study, this paper elaborates on the technical process of fire scene simulation and fire safety analysis. The Topics covered in the paper include: fire design, establishing the fire scene, setting evacuation scenarios, conducting evacuation simulation analysis, simulating smoke dispersion, and making safety assessments, which can provide a technical reference for similar types of building design.
2024, 16(3): 99-103.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.18
Abstract:
In response to the inefficiencies encountered in traditional equipment room inspection practices within maintenance operations, an advanced BIM-based digital inspection system tailored for building equipment rooms has been meticulously developed in this paper. This system adeptly harnesses the IFC(Industry Foundation Classes) data standard to impeccably amalgamate disparate data from facility maintenance systems with BIM models, thereby effectuating a seamless integration that offers a panoramic three-dimensional visual representation of BIM applications across the entire spectrum of operation and maintenance phases. The practical implementation of this system within an equipment room situated within an office building. It demonstrated exceptional performances include a quadrupling of inspection efficiency, a substantial 50% reduction in predictive fault identification and response times, and an appreciable reduction of equipment operational energy consumption by approximately 4%-5%. As a culmination of these advancements, this pilot initiative has significantly elevated the operational efficiency of equipment rooms through the strategic deployment of this advanced system.
In response to the inefficiencies encountered in traditional equipment room inspection practices within maintenance operations, an advanced BIM-based digital inspection system tailored for building equipment rooms has been meticulously developed in this paper. This system adeptly harnesses the IFC(Industry Foundation Classes) data standard to impeccably amalgamate disparate data from facility maintenance systems with BIM models, thereby effectuating a seamless integration that offers a panoramic three-dimensional visual representation of BIM applications across the entire spectrum of operation and maintenance phases. The practical implementation of this system within an equipment room situated within an office building. It demonstrated exceptional performances include a quadrupling of inspection efficiency, a substantial 50% reduction in predictive fault identification and response times, and an appreciable reduction of equipment operational energy consumption by approximately 4%-5%. As a culmination of these advancements, this pilot initiative has significantly elevated the operational efficiency of equipment rooms through the strategic deployment of this advanced system.
2024, 16(3): 104-108.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.19
Abstract:
This paper introduces artificial intelligence methods in structural design, and further proposes a method for expressing building structural features, and constructs an automatic design method for frame structures centered on generating adversarial networks. In the data preprocessing stage, this paper proposes building feature expression methods and structural feature expression methods by analyzing building structural drawings. During constructing algorithm models, the adversarial algorithm is trained and generated under limited data to learn framework structure layout. A framework structure automatic layout model containing component size information is constructed based on building information, and evaluation indicators are proposed to quantify the structural design ability of the model. In the case study in this paper, the framework structure automatic layout model constructed is used to complete the automatic design of an actual building, which verifies the improvement of the proposed method in structural design efficiency.
This paper introduces artificial intelligence methods in structural design, and further proposes a method for expressing building structural features, and constructs an automatic design method for frame structures centered on generating adversarial networks. In the data preprocessing stage, this paper proposes building feature expression methods and structural feature expression methods by analyzing building structural drawings. During constructing algorithm models, the adversarial algorithm is trained and generated under limited data to learn framework structure layout. A framework structure automatic layout model containing component size information is constructed based on building information, and evaluation indicators are proposed to quantify the structural design ability of the model. In the case study in this paper, the framework structure automatic layout model constructed is used to complete the automatic design of an actual building, which verifies the improvement of the proposed method in structural design efficiency.
2024, 16(3): 109-114.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.20
Abstract:
The cold-formed thin-walled steel structure residence is widely used in low-rise light-steel structure residence with rapid construction demand because of its light weight, small seismic response and high installation accuracy. However, due to the limitations of the relevant structural modeling and calculation software in the industry, the design of cold-formed thin-walled steel structures has always remained at the two-dimensional design level. This paper has innovated the secondary development plug-in based on Revit2017, and realized the BIM positive design of cold-formed thin-walled steel structures for the first time in the industry, and integrated a full-professional collaborative design platform with automatic modeling and structural calculation. Through the function-based modular house design, the industrial product thinking is introduced in the design stage. Considering different living needs, the functional spaces e.g. bedroom, living room, kitchen and bathroom are designed into several standardized functional modules, which form a diversified flat through module combination. An open modular database suitable for each functional space of cold-formed thin-walled steel composite wallboard houses has been initially established, which provides a basis for deepening architectural design and standardization of wallboard splitting. Integrating the BIM intelligent building system and compiling the algorithm according to the specification requirements, the intelligent production of light steel keel has been realized in the design stage by realizing the functions include: rapid keel generation and 3D modeling, generation of calculation sheets and design drawings, deepening of details and calculation, docking of production and manufacturing equipment and automatic transmission of production and manufacturing data.
The cold-formed thin-walled steel structure residence is widely used in low-rise light-steel structure residence with rapid construction demand because of its light weight, small seismic response and high installation accuracy. However, due to the limitations of the relevant structural modeling and calculation software in the industry, the design of cold-formed thin-walled steel structures has always remained at the two-dimensional design level. This paper has innovated the secondary development plug-in based on Revit2017, and realized the BIM positive design of cold-formed thin-walled steel structures for the first time in the industry, and integrated a full-professional collaborative design platform with automatic modeling and structural calculation. Through the function-based modular house design, the industrial product thinking is introduced in the design stage. Considering different living needs, the functional spaces e.g. bedroom, living room, kitchen and bathroom are designed into several standardized functional modules, which form a diversified flat through module combination. An open modular database suitable for each functional space of cold-formed thin-walled steel composite wallboard houses has been initially established, which provides a basis for deepening architectural design and standardization of wallboard splitting. Integrating the BIM intelligent building system and compiling the algorithm according to the specification requirements, the intelligent production of light steel keel has been realized in the design stage by realizing the functions include: rapid keel generation and 3D modeling, generation of calculation sheets and design drawings, deepening of details and calculation, docking of production and manufacturing equipment and automatic transmission of production and manufacturing data.
Application of BIM Technology in the Construction Management of Ezhou Huahu Airport Corridor Project
2024, 16(3): 115-120.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.21
Abstract:
The project explored in this paper has a large number of individual units, covers a large area, and involves multiple disciplines. Through the creation and integration of refined models, full professional collaborative work is carried out before construction to avoid potential collision between multiple disciplines and sections in advance. After the modeling and drawing, technical disclosure and guide on-site construction are conducted. Through inspection, rectification, review, and summary, this paper has achieved a closed-loop management of formwork construction management. As for deepening design management, construction process management, and cost management, this paper elaborates on the specific application innovation and practice of BIM technology in airport project construction management, and analyzes the application effectiveness of BIM technology in construction management.
The project explored in this paper has a large number of individual units, covers a large area, and involves multiple disciplines. Through the creation and integration of refined models, full professional collaborative work is carried out before construction to avoid potential collision between multiple disciplines and sections in advance. After the modeling and drawing, technical disclosure and guide on-site construction are conducted. Through inspection, rectification, review, and summary, this paper has achieved a closed-loop management of formwork construction management. As for deepening design management, construction process management, and cost management, this paper elaborates on the specific application innovation and practice of BIM technology in airport project construction management, and analyzes the application effectiveness of BIM technology in construction management.
2024, 16(3): 121-125.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.22
Abstract:
With the rapid development of Internet technology, BIM technology has been widely used in the field of construction in recent years. Revit is considered as the core BIM modeling software in China. In the process of applying Revit software to create BIM models of various architectural specialties, there are many changes in road curve and height, therefore manual modeling of Revit has certain limitations, which requires a lot of repetitive labor and affects the modeling efficiency. This paper mainly studies the rapid generation of road BIM model system based on Grasshopper and Revit software, and realizes the rapid modeling of Revit software through the generation of complex road BIM model through parameterization technology, which improves the efficiency of BIM modeling and obtains the application value of BIM technology to engineering. The application results show that the rapid generation of road BIM model by applying parameterization technology can effectively improve the efficiency and the degree of informatization and digitalization in the engineering design stage, which can provide a reference for applying BIM technology in the design stage of road engineering.
With the rapid development of Internet technology, BIM technology has been widely used in the field of construction in recent years. Revit is considered as the core BIM modeling software in China. In the process of applying Revit software to create BIM models of various architectural specialties, there are many changes in road curve and height, therefore manual modeling of Revit has certain limitations, which requires a lot of repetitive labor and affects the modeling efficiency. This paper mainly studies the rapid generation of road BIM model system based on Grasshopper and Revit software, and realizes the rapid modeling of Revit software through the generation of complex road BIM model through parameterization technology, which improves the efficiency of BIM modeling and obtains the application value of BIM technology to engineering. The application results show that the rapid generation of road BIM model by applying parameterization technology can effectively improve the efficiency and the degree of informatization and digitalization in the engineering design stage, which can provide a reference for applying BIM technology in the design stage of road engineering.
2024, 16(3): 126-130.
doi: 10.16670/j.cnki.cn11-5823/tu.2024.03.23
Abstract:
At present, the construction industry faces problems of insufficient innovation ability and insufficient informatization application. However, the traditional two-dimensional building planning, design, and deepening processing of curtain encounters the issues including: low efficiency, poor information integration and sharing. Through BIM technology simulation, deepening stage division, and ProE+CAM system application, etc. This paper introduces the BIM application implementation route in detail from the aspects e.g. silhouette planning and performance verification, curtain wall scheme design, deepening and processing, etc. The results from the practice in an urban complex project show that this method can assist the comparison selection and performance analysis of building schemes, which can improve the efficiency of curtain wall deepening processing.
At present, the construction industry faces problems of insufficient innovation ability and insufficient informatization application. However, the traditional two-dimensional building planning, design, and deepening processing of curtain encounters the issues including: low efficiency, poor information integration and sharing. Through BIM technology simulation, deepening stage division, and ProE+CAM system application, etc. This paper introduces the BIM application implementation route in detail from the aspects e.g. silhouette planning and performance verification, curtain wall scheme design, deepening and processing, etc. The results from the practice in an urban complex project show that this method can assist the comparison selection and performance analysis of building schemes, which can improve the efficiency of curtain wall deepening processing.
