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Vol. 6, No 5, 2014
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2014, 6(5): 1-5.
Abstract:
The diagonal grid system does not have the traditional beams and columns, and only has the double-way crossed diagonal columns, and such columns form the tube body.This system has great lateral rigidity, and transmits force in the way of slant axial force.It can effectively overcome generation of the second order bending moment, make up the defect that the beam and column system cannot sufficiently resist the horizontal load, and the internal layout of the building is freer.The structure can be deemed as the supporting frame and tube system, and is different from the ordinary frame and tube structure.The exterior tube consists of diagonal rods that cross in double-way and encircle the external surface of the building continuously.It can overcome the weakness that additional slant bracing is needed if the traditional vertical column bears excessive force.In this paper, the dynamic elastoplasticity analysis for such structure under rarely-occurring earthquake is conducted using the ABAQUS software.For the diagonal grid system of the core tubes in different sizes, mechanical properties of the system under rarely-occurring earthquake action are analyzed.
The diagonal grid system does not have the traditional beams and columns, and only has the double-way crossed diagonal columns, and such columns form the tube body.This system has great lateral rigidity, and transmits force in the way of slant axial force.It can effectively overcome generation of the second order bending moment, make up the defect that the beam and column system cannot sufficiently resist the horizontal load, and the internal layout of the building is freer.The structure can be deemed as the supporting frame and tube system, and is different from the ordinary frame and tube structure.The exterior tube consists of diagonal rods that cross in double-way and encircle the external surface of the building continuously.It can overcome the weakness that additional slant bracing is needed if the traditional vertical column bears excessive force.In this paper, the dynamic elastoplasticity analysis for such structure under rarely-occurring earthquake is conducted using the ABAQUS software.For the diagonal grid system of the core tubes in different sizes, mechanical properties of the system under rarely-occurring earthquake action are analyzed.
2014, 6(5): 6-15.
Abstract:
The reasonable task sublet and schedule is necessary in the process of large road construction projects.As a matter of fact, the optimization of construction task scheduling relies on the available resource sets.However, the resource sets usually have different executive capabilities for the same tasks(i.e.the resource systems are heterogeneous), which has been neglected in current research.This paper proposes an algorithm named MHEFT for construction task sublet and schedule on heterogeneous resource system, which is based on DAG model and a heterogeneous resource system model.The results of the application and extended simulation experiments, which use the data of Chengxiang Road construction project in Nanxiang community in Shanghai, prove the effectiveness and robustness of MHEFT.
The reasonable task sublet and schedule is necessary in the process of large road construction projects.As a matter of fact, the optimization of construction task scheduling relies on the available resource sets.However, the resource sets usually have different executive capabilities for the same tasks(i.e.the resource systems are heterogeneous), which has been neglected in current research.This paper proposes an algorithm named MHEFT for construction task sublet and schedule on heterogeneous resource system, which is based on DAG model and a heterogeneous resource system model.The results of the application and extended simulation experiments, which use the data of Chengxiang Road construction project in Nanxiang community in Shanghai, prove the effectiveness and robustness of MHEFT.
2014, 6(5): 16-21.
Abstract:
With the rapid development of domestic urban construction, there are more and more high-level and high-rise buildings.The problem of lighting right blocked by buildings becomes serious.In the planning management, how to reasonably define sunlight overshaded range and balance the interests of the developer and the surrounding residents are difficult problems for the planning management departments at various levels.Combining the national and local standards, and based on the actual working conditions, the paper discusses how to define the reasonable overshadowed range in sunlight calculation, which has reference significance to planning and management departments of all levels.
With the rapid development of domestic urban construction, there are more and more high-level and high-rise buildings.The problem of lighting right blocked by buildings becomes serious.In the planning management, how to reasonably define sunlight overshaded range and balance the interests of the developer and the surrounding residents are difficult problems for the planning management departments at various levels.Combining the national and local standards, and based on the actual working conditions, the paper discusses how to define the reasonable overshadowed range in sunlight calculation, which has reference significance to planning and management departments of all levels.
2014, 6(5): 22-25.
Abstract:
Numerical simulation using finite element (FE) software packages has been widely adopted to investigate the seismic performance of large-scale structures, recently.Among these, Open System for Earthquake Engineering Simulation (OpenSees), as an open-source FE software program, has increasingly become one of the most influential packages.However, the computational efficiency of the matrix solvers currently cannot satisfy the demand for numerical simulation of large-scale structures.Consequently, two new, parallel, iterative linear solvers are proposed and implemented in OpenSees based on two graphic processing unit-based (GPU-based) libraries.The time history analysis of two typical large-scale structures are performed using the proposed solvers.The speed-up ratio of the proposed solvers are up to 9 to 15 (achieved with high accuracy in results).The research outcome can provide an effective computing technology for further numerical analysis of the seismic behavior of large-scale structures.
Numerical simulation using finite element (FE) software packages has been widely adopted to investigate the seismic performance of large-scale structures, recently.Among these, Open System for Earthquake Engineering Simulation (OpenSees), as an open-source FE software program, has increasingly become one of the most influential packages.However, the computational efficiency of the matrix solvers currently cannot satisfy the demand for numerical simulation of large-scale structures.Consequently, two new, parallel, iterative linear solvers are proposed and implemented in OpenSees based on two graphic processing unit-based (GPU-based) libraries.The time history analysis of two typical large-scale structures are performed using the proposed solvers.The speed-up ratio of the proposed solvers are up to 9 to 15 (achieved with high accuracy in results).The research outcome can provide an effective computing technology for further numerical analysis of the seismic behavior of large-scale structures.
2014, 6(5): 26-30，37.
Abstract:
Since China's accession to the WTO, the domestic construction market of timber structure engineering has started to introduce a large number of imported high quality wood and advanced design techniques to satisfy people's demand for timberwork residence.This paper mainly describes the status of development of the wood structure system at home and abroad, as well as the system and structure of wood houses.Conclusion is given based on the engineering example of timberwork SAP2000 modeling analysis.
Since China's accession to the WTO, the domestic construction market of timber structure engineering has started to introduce a large number of imported high quality wood and advanced design techniques to satisfy people's demand for timberwork residence.This paper mainly describes the status of development of the wood structure system at home and abroad, as well as the system and structure of wood houses.Conclusion is given based on the engineering example of timberwork SAP2000 modeling analysis.
2014, 6(5): 31-33.
Abstract:
The haze weather, which has appeared continuously and frequently in recent years, cause the profound reflection on the problems of environment and energy once again.And it has also sounded alarm to HVAC industry.In this paper, the author synthetically analyzes six aspects to optimize HVAC system design and equipment selection from the viewpoint of building indoor micro environment.In the end of this paper, the author puts forward the passive buildings with purified fresh air and better indoor air circulation, which are the most effective measure to prevent the haze weather.It can also be used to eventually establish standards and specifications for optimal design of HVAC system.
The haze weather, which has appeared continuously and frequently in recent years, cause the profound reflection on the problems of environment and energy once again.And it has also sounded alarm to HVAC industry.In this paper, the author synthetically analyzes six aspects to optimize HVAC system design and equipment selection from the viewpoint of building indoor micro environment.In the end of this paper, the author puts forward the passive buildings with purified fresh air and better indoor air circulation, which are the most effective measure to prevent the haze weather.It can also be used to eventually establish standards and specifications for optimal design of HVAC system.
2014, 6(5): 34-37.
Abstract:
Informations of the parts in the product should be extracted after finishing the 3D model of Bridge by CATIA software.The paper applies VB program to extract, order and store the related information of components automatically, and export to EXCEL file to generate the required standard BOM table.This method can improve design efficiency and achieve good application results.
Informations of the parts in the product should be extracted after finishing the 3D model of Bridge by CATIA software.The paper applies VB program to extract, order and store the related information of components automatically, and export to EXCEL file to generate the required standard BOM table.This method can improve design efficiency and achieve good application results.
2014, 6(5): 38-45.
Abstract:
Wuhan Greenland Center Project is the world's third-tallest building with 636 meters.The underground structure has been completed and the main building structure is under rapid construction.During the construction, BIM is playing a key role.This paper introduces the method of setting the jacking formwork system based on BIM technology, and solves problems of BIM application to vertical transportation, turnover materials management, pipeline optimization and steel structure erection.BIM technology makes the installation of the tower crane lifting formwork platform go on smoothly and guarrantees the construction progress on the ground core tube structure.
Wuhan Greenland Center Project is the world's third-tallest building with 636 meters.The underground structure has been completed and the main building structure is under rapid construction.During the construction, BIM is playing a key role.This paper introduces the method of setting the jacking formwork system based on BIM technology, and solves problems of BIM application to vertical transportation, turnover materials management, pipeline optimization and steel structure erection.BIM technology makes the installation of the tower crane lifting formwork platform go on smoothly and guarrantees the construction progress on the ground core tube structure.
2014, 6(5): 46-52.
Abstract:
BIM (Building Information Modeling), as one of the major innovations in the past decade, has a broad and far-reaching impact on Architecture, Engineering and Construction (AEC) industry.However, BIM are mostly applied in the design and construction phases of the building, not in the building Life-Cycle Facility Management (FM).Past studies indicate that two thirds of the cost incurred as result of ongoing facility operation and maintenance activies during the building life-cycle.To address this issue, this study aims to propose a novel cloud-based BIM facility management platform (the 9Directions®solution), accounting for the limitation and chanlleges for the current isolated BIM facility management system, i.e., inframented information, information redundancy, and disconnected information flow or even the loss.By implementing this platform, FM team has a data-enriched, object-oriented, intellegient and paramenter-integreated, database-centralized, cloud-based and visualized BIM FM system, which would greatly improve the efficiency in facility operation and management.A case study is provided finally to demonstrate how to use the 9Directions solution to support facility management in heatlthcare environments.
BIM (Building Information Modeling), as one of the major innovations in the past decade, has a broad and far-reaching impact on Architecture, Engineering and Construction (AEC) industry.However, BIM are mostly applied in the design and construction phases of the building, not in the building Life-Cycle Facility Management (FM).Past studies indicate that two thirds of the cost incurred as result of ongoing facility operation and maintenance activies during the building life-cycle.To address this issue, this study aims to propose a novel cloud-based BIM facility management platform (the 9Directions®solution), accounting for the limitation and chanlleges for the current isolated BIM facility management system, i.e., inframented information, information redundancy, and disconnected information flow or even the loss.By implementing this platform, FM team has a data-enriched, object-oriented, intellegient and paramenter-integreated, database-centralized, cloud-based and visualized BIM FM system, which would greatly improve the efficiency in facility operation and management.A case study is provided finally to demonstrate how to use the 9Directions solution to support facility management in heatlthcare environments.
2014, 6(5): 53-60.
Abstract:
In this paper, the author takes GanJiang Secondary Bridge project as an example to show how we use Dassault 3DEXPERIENCE software platform to establish the component template according to the bridge member type and how we form a complete model by automatically assemblying the component templates.And then, we simulates the design change and experience the convenience in this process.Furthermore, we simulates the whole process of bridge construction.In the end, the author hopes that this paper could help a lot to the application of BIM technology in similar bridge project.
In this paper, the author takes GanJiang Secondary Bridge project as an example to show how we use Dassault 3DEXPERIENCE software platform to establish the component template according to the bridge member type and how we form a complete model by automatically assemblying the component templates.And then, we simulates the design change and experience the convenience in this process.Furthermore, we simulates the whole process of bridge construction.In the end, the author hopes that this paper could help a lot to the application of BIM technology in similar bridge project.
2014, 6(5): 61-65.
Abstract:
Generally, large construction projects in China have the features of huge investment, complex shapes, tight construction schedules, etc.In face of increasingly complex and diverse construction projects, the traditional project management pattern can't adapt to the current demand.The rapid development of information technology such as BIM provides a new way and method for project management.BIM research and application of Beijing Urban Construction Group can be traced back to the national stadium for the application of 4D system and Multi-user Collaborative Work System.Later, in the Kunming new airport and Beijing Inter IKEA Shopping Center and other projects, the depth and breadth of BIM applications have been extended, and it has obtained a good application effect.
Generally, large construction projects in China have the features of huge investment, complex shapes, tight construction schedules, etc.In face of increasingly complex and diverse construction projects, the traditional project management pattern can't adapt to the current demand.The rapid development of information technology such as BIM provides a new way and method for project management.BIM research and application of Beijing Urban Construction Group can be traced back to the national stadium for the application of 4D system and Multi-user Collaborative Work System.Later, in the Kunming new airport and Beijing Inter IKEA Shopping Center and other projects, the depth and breadth of BIM applications have been extended, and it has obtained a good application effect.
2014, 6(5): 66-72.
Abstract:
In recent years, building information model (BIM) has not only developed rapidly in theory, but has also been widely used in the project practice.However, the combination of BIM technology and project management research and practice is still relatively rare.In this paper, based on the characteristics of the project management and the BIM technology application, and treating BIM as a kind of management environment, the project management process is explored as BIM applied to the traditional project management process.In the meanwhile, the BIM application process in project management is analyzed in this paper.And the key problems occurred when BIM is applied to the project management are discussed.
In recent years, building information model (BIM) has not only developed rapidly in theory, but has also been widely used in the project practice.However, the combination of BIM technology and project management research and practice is still relatively rare.In this paper, based on the characteristics of the project management and the BIM technology application, and treating BIM as a kind of management environment, the project management process is explored as BIM applied to the traditional project management process.In the meanwhile, the BIM application process in project management is analyzed in this paper.And the key problems occurred when BIM is applied to the project management are discussed.
2014, 6(5): 73-80.
Abstract:
Application of BIM technology in decoration engineering is significant for the complete application of BIM technology in the full process of green building construction.Currently, in the application of BIM technology into decoration engineering, CAD documents should be imported into Revit as a reference.In current engineering practice, there are a great number of CAD document's data, and these data are very complicated.When these documents are imported to Revit, errors are frequently found, which results in low efficiency.Based on her practice, the author summarizes different problems met when importing CAD files, makes tentative pretreatment methods to solve these problems, and proposes operation procedures, which might be used as a reference for BIM engineers in decoration engineering.
Application of BIM technology in decoration engineering is significant for the complete application of BIM technology in the full process of green building construction.Currently, in the application of BIM technology into decoration engineering, CAD documents should be imported into Revit as a reference.In current engineering practice, there are a great number of CAD document's data, and these data are very complicated.When these documents are imported to Revit, errors are frequently found, which results in low efficiency.Based on her practice, the author summarizes different problems met when importing CAD files, makes tentative pretreatment methods to solve these problems, and proposes operation procedures, which might be used as a reference for BIM engineers in decoration engineering.
2014, 6(5): 81-88.
Abstract:
The revolution of IT (Information Technology) and software for AEC industry have not changed the traditional constructing management patterns, and construction efficiency has not been improved sharply.According to the results, this paper explores design management patterns based on BIM (Building Information Modeling), and it refers to the subject "exploring the key coordination and management digital technologies based on the EXPO group buildings", and the Headquarters Bases for Central Government Owned Enterprises within the EXPO site is used as a case.After analyzing the features of complex group buildings and BIM technology, design management patterns based on BIM are explored.
The revolution of IT (Information Technology) and software for AEC industry have not changed the traditional constructing management patterns, and construction efficiency has not been improved sharply.According to the results, this paper explores design management patterns based on BIM (Building Information Modeling), and it refers to the subject "exploring the key coordination and management digital technologies based on the EXPO group buildings", and the Headquarters Bases for Central Government Owned Enterprises within the EXPO site is used as a case.After analyzing the features of complex group buildings and BIM technology, design management patterns based on BIM are explored.
2014, 6(5): 89-94.
Abstract:
The construction industry is important to the development of our national economy.For a long time, the construction enterprises have been faced up with problems such as extensive management, high energy consumption, labor intensive, and low profit.How to use the advanced technology to enhance the management level of construction project becomes very necessary and urgent.This paper adopts BIM technology to enhance the management ideas of construction stage and build up BIM management organization schemes, and introduces the application of the results of BIM in the construction stage.
The construction industry is important to the development of our national economy.For a long time, the construction enterprises have been faced up with problems such as extensive management, high energy consumption, labor intensive, and low profit.How to use the advanced technology to enhance the management level of construction project becomes very necessary and urgent.This paper adopts BIM technology to enhance the management ideas of construction stage and build up BIM management organization schemes, and introduces the application of the results of BIM in the construction stage.
2014, 6(5): 95-101.
Abstract:
"Information Isolated Island" phenomenon is restricting the construction industry life cycle management efficiency, and the participating parties are reluctant to share information, which often leads to the emergence of a large number of changes in construction.Based on the unified standard of BIM, the information of all the participants in investment, design, construction, completion stage is created and transmitted in strict accordance with the unified BIM standard, avoiding the information flow distortion during transmission.Firstly, breaking the traditional narrow understanding of BIM, its location in the broad sense as a mechanism raises and establishs BIM standards based on IFC standard in this mechanism.Secondly, the introduction of the system entropy value indicates the degree of order to establish the full life cycle of information transmission architecture model based on entropy and information technology.Finally, on the basis of BIM standards and information transmission model, a building life-cycle collaborative framework is proposed, in order to reduce post-construction changes, which provides a basis for solving the whole process of building "Information Isolated Island" phenomenon.
"Information Isolated Island" phenomenon is restricting the construction industry life cycle management efficiency, and the participating parties are reluctant to share information, which often leads to the emergence of a large number of changes in construction.Based on the unified standard of BIM, the information of all the participants in investment, design, construction, completion stage is created and transmitted in strict accordance with the unified BIM standard, avoiding the information flow distortion during transmission.Firstly, breaking the traditional narrow understanding of BIM, its location in the broad sense as a mechanism raises and establishs BIM standards based on IFC standard in this mechanism.Secondly, the introduction of the system entropy value indicates the degree of order to establish the full life cycle of information transmission architecture model based on entropy and information technology.Finally, on the basis of BIM standards and information transmission model, a building life-cycle collaborative framework is proposed, in order to reduce post-construction changes, which provides a basis for solving the whole process of building "Information Isolated Island" phenomenon.
2014, 6(5): 102-106.
Abstract:
As a new project management tool, BIM technology is gradually recognized and applied by engineers.Its comprehensive promotion will bring a new revolution to the engineering construction.Through the application of BIM technology in the target, the Changjiang Media building in engineering implementation, a full range of application (includingthe model of 3D browsing, statistics of engineering quantities, three-dimensional construction field cloth, 4D schedule management, scheme simulation, mechanical and electrical collision check, steel structure deepening and three management platform application) and the application of the results and experience, this paper analyzes the value of BIM technology in the process of project implementation and application in the future.
As a new project management tool, BIM technology is gradually recognized and applied by engineers.Its comprehensive promotion will bring a new revolution to the engineering construction.Through the application of BIM technology in the target, the Changjiang Media building in engineering implementation, a full range of application (includingthe model of 3D browsing, statistics of engineering quantities, three-dimensional construction field cloth, 4D schedule management, scheme simulation, mechanical and electrical collision check, steel structure deepening and three management platform application) and the application of the results and experience, this paper analyzes the value of BIM technology in the process of project implementation and application in the future.
2014, 6(5): 107-111.
Abstract:
This paper analyzes the status of construction information classification and coding system, the significance of a unified coding system for information management, and representatives of domestic and international construction industry with significant coding system.We propose suitable airport terminal building facilities and equipment operation and maintenance management of the new coding system.
This paper analyzes the status of construction information classification and coding system, the significance of a unified coding system for information management, and representatives of domestic and international construction industry with significant coding system.We propose suitable airport terminal building facilities and equipment operation and maintenance management of the new coding system.
2014, 6(5): 112-117.
Abstract:
BIM technology is widely used in the field of architectural design and construction, but there is a big disparity in the field of application in metallurgical equipment repair.Based on BIM technology principle, from plant and equipment modeling to maintenance simulation, this article expounds ways of the BIM technology application in the field of metallurgical equipment maintenance, which is verified by an example.
BIM technology is widely used in the field of architectural design and construction, but there is a big disparity in the field of application in metallurgical equipment repair.Based on BIM technology principle, from plant and equipment modeling to maintenance simulation, this article expounds ways of the BIM technology application in the field of metallurgical equipment maintenance, which is verified by an example.
