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Vol. 6, No 6, 2014
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2014, 6(6): 1-7.
Abstract:
Since the beginning of the 21st Century, application of digital technology has made rapid progress in the architecture field, and relationship between design and construction is integrated on the platform of digital technology. The world greets the tide of digitalized architectural design. At home and abroad, many excellent digital buildings appear. These buildings imply their own geometrical rules. With these rules, it can program or use the geometrical modeling software to establish the parameterization geometrical model. Combining with the professional software, it can form the physical model, which can be imported to the finite element software or structural calculation software to conduct analysis and calculation. Digital buildings have the mathematic rhythm. When the building and the structure integrate in a perfect way, it often creates the miraculous architectural form that is greatly different from the traditional forms and makes the people to give acclaim. In this Paper, taking the classical boy's curved surface and ellipsoid carbon cage form as the examples, specific parameterization modeling and structural analysis are described in details.
Since the beginning of the 21st Century, application of digital technology has made rapid progress in the architecture field, and relationship between design and construction is integrated on the platform of digital technology. The world greets the tide of digitalized architectural design. At home and abroad, many excellent digital buildings appear. These buildings imply their own geometrical rules. With these rules, it can program or use the geometrical modeling software to establish the parameterization geometrical model. Combining with the professional software, it can form the physical model, which can be imported to the finite element software or structural calculation software to conduct analysis and calculation. Digital buildings have the mathematic rhythm. When the building and the structure integrate in a perfect way, it often creates the miraculous architectural form that is greatly different from the traditional forms and makes the people to give acclaim. In this Paper, taking the classical boy's curved surface and ellipsoid carbon cage form as the examples, specific parameterization modeling and structural analysis are described in details.
2014, 6(6): 8-12.
Abstract:
Based on the elastic-plastic time-history analysis method, the collision response of large-span corridor structure between the three towers of Shanghai International Financial Center is studied. The research work focused on the feasibility of the mutual collision, the magnitude of the impact force between the corridor and the main towers and impact force's distribution characteristics in space under severe earthquake. In addition, the components' performance is checked during collision. The analysis research method in this paper can provide significant reference to other similar complex corridor structures.
Based on the elastic-plastic time-history analysis method, the collision response of large-span corridor structure between the three towers of Shanghai International Financial Center is studied. The research work focused on the feasibility of the mutual collision, the magnitude of the impact force between the corridor and the main towers and impact force's distribution characteristics in space under severe earthquake. In addition, the components' performance is checked during collision. The analysis research method in this paper can provide significant reference to other similar complex corridor structures.
2014, 6(6): 13-18.
Abstract:
Bridge load testing analysis system software BLT was specially used for bridge load testing in Highway or Civic Project, which was developed by Research Institute of Highway Ministry of Transport. It can establish a bridge three-dimensional finite element model, based on parameterized modeling technology, making a three-dimensional model browsing and post-processingcloud picture display platform based on OpenGL graphic technology. BLT system could make the static and dynamic test analysis based on solid element and space beam gird element, simplifying calculation parameters to realize the organic combination of calculate precision and efficiency. It could automatically recommend load testing scheme closely based on regulations and automatically calculate loading arrangement, as well as investigating the theoretical calculations of stress and displacement in the location of the measurement points and consulting the stress and displacement nephogram, and also finally output load test scheme and report.Comparing with solutions of the past software, this system is of high intelligence in Load Testing and improves the efficiency of bridge Load testing, which is a useful auxiliary tool for bridge detection engineers. This paper introduces the problems of past similar software, the characteristics of the system, as well as the real bridge application examples.
Bridge load testing analysis system software BLT was specially used for bridge load testing in Highway or Civic Project, which was developed by Research Institute of Highway Ministry of Transport. It can establish a bridge three-dimensional finite element model, based on parameterized modeling technology, making a three-dimensional model browsing and post-processingcloud picture display platform based on OpenGL graphic technology. BLT system could make the static and dynamic test analysis based on solid element and space beam gird element, simplifying calculation parameters to realize the organic combination of calculate precision and efficiency. It could automatically recommend load testing scheme closely based on regulations and automatically calculate loading arrangement, as well as investigating the theoretical calculations of stress and displacement in the location of the measurement points and consulting the stress and displacement nephogram, and also finally output load test scheme and report.Comparing with solutions of the past software, this system is of high intelligence in Load Testing and improves the efficiency of bridge Load testing, which is a useful auxiliary tool for bridge detection engineers. This paper introduces the problems of past similar software, the characteristics of the system, as well as the real bridge application examples.
2014, 6(6): 19-25.
Abstract:
The key factor of BIM implementation is the standardization and automation framework of construction drawing. For pragmatic reasons, the framework should not only support basic finite element analysis, drawing and estimation software but also different versions of AutoCAD. Technically speaking, automation, individuation, interaction and platform adaptability of the framework are the keys. Automation means high drawing speed and better drawing quality; individuation means the construction drawing framework is adaptable to different ways of drawing expression; platform adaptability means the framework is compatible for other drawing software; interaction means related drawings can modify themselves when a structure component is modified. In the end of the article, the process of implementation of standardization and automation framework is introduced.
The key factor of BIM implementation is the standardization and automation framework of construction drawing. For pragmatic reasons, the framework should not only support basic finite element analysis, drawing and estimation software but also different versions of AutoCAD. Technically speaking, automation, individuation, interaction and platform adaptability of the framework are the keys. Automation means high drawing speed and better drawing quality; individuation means the construction drawing framework is adaptable to different ways of drawing expression; platform adaptability means the framework is compatible for other drawing software; interaction means related drawings can modify themselves when a structure component is modified. In the end of the article, the process of implementation of standardization and automation framework is introduced.
2014, 6(6): 26-29.
Abstract:
With the development of the domestic economy, the construction industry technology has also made a great progress. People are demanding structure systems with more changes. The slab conversion layer structure can fulfill the demand of large space at the bottom. But the transfer floor structure is heavier with complex stress and difficult construction. Thus there is little application of this system. To realize this structure system, this paper mainly aims at the analysis of the influence of supporting system under construction, and combines the engineering example of slab conversion layer structure, using ABAQUS to establish the simulation model to analyze the supporting system force under the action of large volume concrete pouring path.
With the development of the domestic economy, the construction industry technology has also made a great progress. People are demanding structure systems with more changes. The slab conversion layer structure can fulfill the demand of large space at the bottom. But the transfer floor structure is heavier with complex stress and difficult construction. Thus there is little application of this system. To realize this structure system, this paper mainly aims at the analysis of the influence of supporting system under construction, and combines the engineering example of slab conversion layer structure, using ABAQUS to establish the simulation model to analyze the supporting system force under the action of large volume concrete pouring path.
2014, 6(6): 30-34.
Abstract:
The theory and practice study is carried out to solve problems of stability analysis method and load factor limits for large-span abnormal RC shell roof structure. One new stability analysis method is developed in Abaqus software which can consider strength failure of concrete material. The reasonable safety factor to the concrete shell is discussed when strength failure and buckling is coupled together, and the recommended value is 2.0. Finally, the practice study is carried out with Datong theatre project as a case. The results show that strength failure of concrete material is the main failure mode to this roof structure, and the comprehensive safety factor can meet the requirements. Analysis and evaluation methods used in this paper can provide reference for other similar structures.
The theory and practice study is carried out to solve problems of stability analysis method and load factor limits for large-span abnormal RC shell roof structure. One new stability analysis method is developed in Abaqus software which can consider strength failure of concrete material. The reasonable safety factor to the concrete shell is discussed when strength failure and buckling is coupled together, and the recommended value is 2.0. Finally, the practice study is carried out with Datong theatre project as a case. The results show that strength failure of concrete material is the main failure mode to this roof structure, and the comprehensive safety factor can meet the requirements. Analysis and evaluation methods used in this paper can provide reference for other similar structures.
2014, 6(6): 35-39,49.
Abstract:
Firstly, four levels of structure optimization are introduced, and the importance and characteristics of traditional "hard clustering" and fuzzy cluster method are analyzed. The fuzzy cluster analysis can reflect the transitional characteristics of structure category more objectively. Secondly, the basic principle and algorithm of FKM are introduced, the FKM-based cluster analysis intelligent form selection of high-rise structures is constructed, and the fuzzy clustering center and its corresponding clustering results are obtained by the fuzzy cluster analysis from 20 engineering cases. Finally, the engineering cases for structural selection based on FKM are listed, and the results match the engineering practice well. Practice shows that FKM cluster analysis method is effective structural form selection method for the design of high-rise structures.
Firstly, four levels of structure optimization are introduced, and the importance and characteristics of traditional "hard clustering" and fuzzy cluster method are analyzed. The fuzzy cluster analysis can reflect the transitional characteristics of structure category more objectively. Secondly, the basic principle and algorithm of FKM are introduced, the FKM-based cluster analysis intelligent form selection of high-rise structures is constructed, and the fuzzy clustering center and its corresponding clustering results are obtained by the fuzzy cluster analysis from 20 engineering cases. Finally, the engineering cases for structural selection based on FKM are listed, and the results match the engineering practice well. Practice shows that FKM cluster analysis method is effective structural form selection method for the design of high-rise structures.
2014, 6(6): 40-43.
Abstract:
In the whole project, transfinite joint core area is a very complex problem which worth more consideration from. designers from several aspects of structural design concepts, methods, construction practices and other considerations, this paper puts forward some methods of handling transfinite joint core area problem, which can be reference for practical engineering application.
In the whole project, transfinite joint core area is a very complex problem which worth more consideration from. designers from several aspects of structural design concepts, methods, construction practices and other considerations, this paper puts forward some methods of handling transfinite joint core area problem, which can be reference for practical engineering application.
2014, 6(6): 44-49.
Abstract:
According to the key requirements in schedule and resource management during construction, an approach for schedule-resource trade-off problem was established based on 4 Dimensional Building Information Model (4D-BIM) proposed by Tsinghua. With the transforming mechanics between 4D-BIM and Discrete Event Simulation model, schedule-resource trade-off model can be achieved automatically. In addition, the paper explores and analyses the process of SA algorithm in order to tackle the schedule-resource trade-off. The whole solution was applied to a real project and illustrated a good result. The result indicates that the automatic schedule-resource trade-off modelling can free people from intensive work, and reduces repetitive work, which provides managers with a practical tool for schedule arrangement and resource allocation.
According to the key requirements in schedule and resource management during construction, an approach for schedule-resource trade-off problem was established based on 4 Dimensional Building Information Model (4D-BIM) proposed by Tsinghua. With the transforming mechanics between 4D-BIM and Discrete Event Simulation model, schedule-resource trade-off model can be achieved automatically. In addition, the paper explores and analyses the process of SA algorithm in order to tackle the schedule-resource trade-off. The whole solution was applied to a real project and illustrated a good result. The result indicates that the automatic schedule-resource trade-off modelling can free people from intensive work, and reduces repetitive work, which provides managers with a practical tool for schedule arrangement and resource allocation.
2014, 6(6): 50-57.
Abstract:
BIM has been widely used in the design and construction phases, and the value of the BIM technology is widely recognized by everyone. But in the facilities management field, BIM is still in the initial stage. Based on the application and practice of the operation management platform of ShenDu mansion, a process of costuming, deploying, implementing local operation and maintenance platform is summed up by Shanghai Xian Dai Architectural Design (Group) Co., Ltd. All kinds of key technologies of the platform are as follows, application data exchange standards, developing equipment classification and coding, operation and maintenance interacted with BIM model. Then, the effectiveness of the platform is described due to the operation management platform of ShenDu mansion.
BIM has been widely used in the design and construction phases, and the value of the BIM technology is widely recognized by everyone. But in the facilities management field, BIM is still in the initial stage. Based on the application and practice of the operation management platform of ShenDu mansion, a process of costuming, deploying, implementing local operation and maintenance platform is summed up by Shanghai Xian Dai Architectural Design (Group) Co., Ltd. All kinds of key technologies of the platform are as follows, application data exchange standards, developing equipment classification and coding, operation and maintenance interacted with BIM model. Then, the effectiveness of the platform is described due to the operation management platform of ShenDu mansion.
2014, 6(6): 58-63.
Abstract:
Starting from specifying implementation goal, selecting implementation mode and building implementation framework, this paper introduces implementation management of BIM in National Convention and Exhibition Centre (Tianjin) Project, analyzes BIM’s advantages at design stage, and summerizes problems occurred in the procedure.
Starting from specifying implementation goal, selecting implementation mode and building implementation framework, this paper introduces implementation management of BIM in National Convention and Exhibition Centre (Tianjin) Project, analyzes BIM’s advantages at design stage, and summerizes problems occurred in the procedure.
2014, 6(6): 64-69.
Abstract:
Collaborative design is the management support of BIM-based engineering design. With the purpose of solving the problem of model management in collaborative design, we make comprehensive application of BIM model management, user management, conflict resolution, the incremental model of transmission, user communication and etc. The research shows that using the integrated management of BIM model, we can build up a web-based collaborative design environment, which can improve the engineering design quality and efficiency significantly. The BIM management mechanism in collaborative design can provide reference for domestic platform development of collaborative design management.
Collaborative design is the management support of BIM-based engineering design. With the purpose of solving the problem of model management in collaborative design, we make comprehensive application of BIM model management, user management, conflict resolution, the incremental model of transmission, user communication and etc. The research shows that using the integrated management of BIM model, we can build up a web-based collaborative design environment, which can improve the engineering design quality and efficiency significantly. The BIM management mechanism in collaborative design can provide reference for domestic platform development of collaborative design management.
2014, 6(6): 70-75.
Abstract:
The 3D model based on BIM technology of digital information can calculate quantities automatically by graphical representation and provides forceful support for electric power engineering cost intuitively. With the aid of Revit platform, this paper has a very good analysis on the difference between the rules of Revit software to calculate the amount and the rules of fixed quantity calculation, which is based on BIM technology and combines the rules of Electric Power Engineering Construction Quotas of 2013. At last, the modeling process and requirements are improved and quantities are calculated automatically by the rules of electricity quota engineering calculation.
The 3D model based on BIM technology of digital information can calculate quantities automatically by graphical representation and provides forceful support for electric power engineering cost intuitively. With the aid of Revit platform, this paper has a very good analysis on the difference between the rules of Revit software to calculate the amount and the rules of fixed quantity calculation, which is based on BIM technology and combines the rules of Electric Power Engineering Construction Quotas of 2013. At last, the modeling process and requirements are improved and quantities are calculated automatically by the rules of electricity quota engineering calculation.
2014, 6(6): 76-80.
Abstract:
The construction project is a collaborative multi-party organization activity, and each phase of the project life cycle has mutual transmission of information flow. At present, due to the subjective and objective factors in the life cycle of the architecture, there is often distorted information transmission, namely "the information isolated island" phenomenon. This phenomenon has greatly restricted the effective progress of the project, while the appearance of BIM technology provides an effective tool for solving the problem. Based on demand analysis, in the construction project collaborative mechanism, this paper establishes the construction project based on BIM technology as the core of the coordination model, analyzes the problem of construction project collaborative model in the actual work and puts forward some solutions, and provides the basis for building life-cycle process reengineering and improve the efficiency of the project.
The construction project is a collaborative multi-party organization activity, and each phase of the project life cycle has mutual transmission of information flow. At present, due to the subjective and objective factors in the life cycle of the architecture, there is often distorted information transmission, namely "the information isolated island" phenomenon. This phenomenon has greatly restricted the effective progress of the project, while the appearance of BIM technology provides an effective tool for solving the problem. Based on demand analysis, in the construction project collaborative mechanism, this paper establishes the construction project based on BIM technology as the core of the coordination model, analyzes the problem of construction project collaborative model in the actual work and puts forward some solutions, and provides the basis for building life-cycle process reengineering and improve the efficiency of the project.
2014, 6(6): 81-85.
Abstract:
At present, the level of development of housing industrialization in China is still at the primary stage, the traditional design method and mode of production has restricted the development of residential industrialization.So changing the traditional ways of design and reducing the cost of construction industrialization become the main task. Using the modular design method based on BIM in the prefabricated housing design and combining construction drawing design with resolution to deepen the design process in the traditional residential industry can optimize design process and improve the efficiency of design. Through detailed research on prefabricated components design and production enterprises and construction enterprises, and research on the application of BIM on the module, this paper puts forward a suitable assembly type structure based on the modularization design method of BIM. The"building block" method is used to make the model unit and form the whole building model. This method can improve the design efficiency, save the cost of design, and improve the entire building industrialization production chain.
At present, the level of development of housing industrialization in China is still at the primary stage, the traditional design method and mode of production has restricted the development of residential industrialization.So changing the traditional ways of design and reducing the cost of construction industrialization become the main task. Using the modular design method based on BIM in the prefabricated housing design and combining construction drawing design with resolution to deepen the design process in the traditional residential industry can optimize design process and improve the efficiency of design. Through detailed research on prefabricated components design and production enterprises and construction enterprises, and research on the application of BIM on the module, this paper puts forward a suitable assembly type structure based on the modularization design method of BIM. The"building block" method is used to make the model unit and form the whole building model. This method can improve the design efficiency, save the cost of design, and improve the entire building industrialization production chain.
2014, 6(6): 86-89.
Abstract:
Building Information Modeling is a construction project model that is based on various relevant information, including architecture model and the real information of building which is simulated through the architecture model.BIM is not a simple digital information integration, but an application of digital information, and digital method a can that be used in design, construction and management.It can improve the efficiency of project management and reduce risk through the integrated management of construction engineering information.
Building Information Modeling is a construction project model that is based on various relevant information, including architecture model and the real information of building which is simulated through the architecture model.BIM is not a simple digital information integration, but an application of digital information, and digital method a can that be used in design, construction and management.It can improve the efficiency of project management and reduce risk through the integrated management of construction engineering information.
2014, 6(6): 90-101.
Abstract:
In recent years, China's construction industry set off a boom based on information revolution, in which "BIM technology" has played the most important role. It can not only realize visualization applications such as collision check and virtual construction projects but also related information database applications such as economic contract planning, short cycle multi-count contrast. However, exaggerated propaganda, unrealistic thoughts and unacclimatized software makes the "BIM technology" more and more mysterious and distant from the truth. But as a revolutionary technology of the construction industry, the achievements of "BIM technology" can never be neglected. It can optimize traditional working modes, improve working efficiency, carry out fine reformation of the extensive production mode, and realize BIM-based integration workflow of "design-contract-construction" (DCC-BIM). According to requirements of each stage of the integration workflow, BIM reconstructs elements based on certain standards and codes, and thus BIM application body plays a substantive value at a certain stage. Similarly, the combination of BIM technology with technologies such internet, cloud computing, point cloud, radio frequency and 3D printing would certainly play an invaluable role in the future smart city construction.
In recent years, China's construction industry set off a boom based on information revolution, in which "BIM technology" has played the most important role. It can not only realize visualization applications such as collision check and virtual construction projects but also related information database applications such as economic contract planning, short cycle multi-count contrast. However, exaggerated propaganda, unrealistic thoughts and unacclimatized software makes the "BIM technology" more and more mysterious and distant from the truth. But as a revolutionary technology of the construction industry, the achievements of "BIM technology" can never be neglected. It can optimize traditional working modes, improve working efficiency, carry out fine reformation of the extensive production mode, and realize BIM-based integration workflow of "design-contract-construction" (DCC-BIM). According to requirements of each stage of the integration workflow, BIM reconstructs elements based on certain standards and codes, and thus BIM application body plays a substantive value at a certain stage. Similarly, the combination of BIM technology with technologies such internet, cloud computing, point cloud, radio frequency and 3D printing would certainly play an invaluable role in the future smart city construction.
2014, 6(6): 102-108.
Abstract:
With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has aroused public attention. Taking a certain public building as the research subject, the author of the thesis imports the 3D model processed by Revit software into such softwares as Pyrosim and Building Exodus by which the 3D model is converted into the fire model and the evacuation model, then conducts the analysis of safety evacuation via the evacuation software according to its detailed description of the fire. The analysis results are compared with the fire in time, and the building model is optimized in order to achieve the safety requirements.The appliance of the BIM model into the practice of safety evacuation in buildings is considered as the manifestation of the data-orientation and visualization of the BIM model, and it would provide the future practice of evacuation with significant guidance
With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has aroused public attention. Taking a certain public building as the research subject, the author of the thesis imports the 3D model processed by Revit software into such softwares as Pyrosim and Building Exodus by which the 3D model is converted into the fire model and the evacuation model, then conducts the analysis of safety evacuation via the evacuation software according to its detailed description of the fire. The analysis results are compared with the fire in time, and the building model is optimized in order to achieve the safety requirements.The appliance of the BIM model into the practice of safety evacuation in buildings is considered as the manifestation of the data-orientation and visualization of the BIM model, and it would provide the future practice of evacuation with significant guidance
2014, 6(6): 109-111, 116.
Abstract:
Combining the development of domestic current situation of the BIM and facility management, the paper discusses and analyzes the application value of BIM mode for facility management from the perspective of large commercial buildings.
Combining the development of domestic current situation of the BIM and facility management, the paper discusses and analyzes the application value of BIM mode for facility management from the perspective of large commercial buildings.
2014, 6(6): 112-116.
Abstract:
The new Humber River Hospital is a fully digital acute care facility of Canada. Its design-builder PCL Constructors Canada Inc. used virtual construction technology to identify elements of the project that could be delivered as offsite solutions fabricated in PCL's PMC production facility. By taking some of the challenges offsite, PCL was able to assist the schedule and reduce onsite logistical and manpower pressure on critical path activities. Besides, the factory setting provided a much more controlled environment to build in, which increased efficiency and enhanced quality on the project. BIM was used extensively in its modular business unit. BIM helped to identify portions of work, rather than individual trades, which increased the amount of prefabrication potential. It also automated more of the process in the shop, where the model was tied to CNC and other equipment to reduce errors and increase efficiency.
The new Humber River Hospital is a fully digital acute care facility of Canada. Its design-builder PCL Constructors Canada Inc. used virtual construction technology to identify elements of the project that could be delivered as offsite solutions fabricated in PCL's PMC production facility. By taking some of the challenges offsite, PCL was able to assist the schedule and reduce onsite logistical and manpower pressure on critical path activities. Besides, the factory setting provided a much more controlled environment to build in, which increased efficiency and enhanced quality on the project. BIM was used extensively in its modular business unit. BIM helped to identify portions of work, rather than individual trades, which increased the amount of prefabrication potential. It also automated more of the process in the shop, where the model was tied to CNC and other equipment to reduce errors and increase efficiency.
