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Vol. 3, No 1, 2011
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2011, 3(1): 1-5.
Abstract:
The trenching construction of a single diaphragm wall is simulated using the three-dimensional finite element method. The influences on the soil lateral movements and surface settlements of the factors, including the slurry pressure, the depth, width, and thickness of the wall are studied. It has been found that the soil lateral movements and surface settlements are sensitive to the slurry pressure and the width of the diaphragm wall, while the influence of the thickness of the wall is smaller. The results also show that when the depth of the wall is biger than a certain value, and the variation of the depth of the wall has little effect on the maximum soil lateral movement and surface settlement.
The trenching construction of a single diaphragm wall is simulated using the three-dimensional finite element method. The influences on the soil lateral movements and surface settlements of the factors, including the slurry pressure, the depth, width, and thickness of the wall are studied. It has been found that the soil lateral movements and surface settlements are sensitive to the slurry pressure and the width of the diaphragm wall, while the influence of the thickness of the wall is smaller. The results also show that when the depth of the wall is biger than a certain value, and the variation of the depth of the wall has little effect on the maximum soil lateral movement and surface settlement.
2011, 3(1): 6-12.
Abstract:
The crime and public safety in urban life is one of the most important public urban issues with the development of social market economic. As the large industrial parks which are the centers of industry-academic-research are significantly built, the crime prevention in these large industrial parks becomes more and more important. Closed-circuit television and guard patrol system are the major methods to prevent the crime through environment design. On the basis of environmental design and safe planning of large industrial park, this paper presents a mathematical model on the guard patrol system of large industrial park. Firstly, according to the distributions of buildings, roads, and sidewalks, the weak regions (relatively un-safe regions) can be obtained through the quantitative analysis of visibility, accessibility, and characteristic in the current site. Then, the track points of guard patrol system can be confirmed according to these weak regions. Finally, through the genetic algorithm, the tracks of guard patrol system are topologically optimized, and the best optimized guard patrol track is obtained. The case study illustrates the efficiency and accuracy of the proposed method.
The crime and public safety in urban life is one of the most important public urban issues with the development of social market economic. As the large industrial parks which are the centers of industry-academic-research are significantly built, the crime prevention in these large industrial parks becomes more and more important. Closed-circuit television and guard patrol system are the major methods to prevent the crime through environment design. On the basis of environmental design and safe planning of large industrial park, this paper presents a mathematical model on the guard patrol system of large industrial park. Firstly, according to the distributions of buildings, roads, and sidewalks, the weak regions (relatively un-safe regions) can be obtained through the quantitative analysis of visibility, accessibility, and characteristic in the current site. Then, the track points of guard patrol system can be confirmed according to these weak regions. Finally, through the genetic algorithm, the tracks of guard patrol system are topologically optimized, and the best optimized guard patrol track is obtained. The case study illustrates the efficiency and accuracy of the proposed method.
2011, 3(1): 13-20.
Abstract:
Nanjing South Station is the large passenger station for Beijing-Shanghai high-speed railway. The façade glass curtain wall over ground is exposed frame glass curtain wall and the maximum distance of frame Structure between fulcrums is the 27.8 meters, which belongs to typically large space and long-span structure. Because of the common effect of associated structure (rafters) and subsidiary structure (grilles), the suspension structure design for curtain wall is very complicated. In this paper, the north entrance curtain wall of Nanjing South Station is discussed and the solution of suspension structure for curtain wall is introduced. Finally, it reveals the method of long-span curtain wall design.
Nanjing South Station is the large passenger station for Beijing-Shanghai high-speed railway. The façade glass curtain wall over ground is exposed frame glass curtain wall and the maximum distance of frame Structure between fulcrums is the 27.8 meters, which belongs to typically large space and long-span structure. Because of the common effect of associated structure (rafters) and subsidiary structure (grilles), the suspension structure design for curtain wall is very complicated. In this paper, the north entrance curtain wall of Nanjing South Station is discussed and the solution of suspension structure for curtain wall is introduced. Finally, it reveals the method of long-span curtain wall design.
2011, 3(1): 21-25.
Abstract:
According to the status of marine engineering's informatization in China, this paper puts forward application of BLM (Building Lifecycle Management) which can improve the core competitiveness of an enterprise by applying BIM (Building Information Modeling) in design, construction, operation maintenance phase of a project. In the light of the characteristics of marine oil and gas development and the problems of structural design phase, this paper puts forward a new automatic design approach that applying BIM technology to the structural design realize the Revit (Pre-treatment)-SACS(structural design and calculation)-Revit (after-treatment) process, which could bring huge economic benefits and set the tone for the implementation of BIM technology in the latter construction, operation maintenance phase.
According to the status of marine engineering's informatization in China, this paper puts forward application of BLM (Building Lifecycle Management) which can improve the core competitiveness of an enterprise by applying BIM (Building Information Modeling) in design, construction, operation maintenance phase of a project. In the light of the characteristics of marine oil and gas development and the problems of structural design phase, this paper puts forward a new automatic design approach that applying BIM technology to the structural design realize the Revit (Pre-treatment)-SACS(structural design and calculation)-Revit (after-treatment) process, which could bring huge economic benefits and set the tone for the implementation of BIM technology in the latter construction, operation maintenance phase.
2011, 3(1): 26-30.
Abstract:
In this paper the possibility of using the CD drawing Plane Method in BIM technology is generally discussed. The merits and demerits of CD drawings by detailing and by Plan Method are compared. Based on a real BIM technology project case in which all the CD drawings are finished by Pland Method, it is confirmed that the Plane Method concept can continuously be used in BIM technology.
In this paper the possibility of using the CD drawing Plane Method in BIM technology is generally discussed. The merits and demerits of CD drawings by detailing and by Plan Method are compared. Based on a real BIM technology project case in which all the CD drawings are finished by Pland Method, it is confirmed that the Plane Method concept can continuously be used in BIM technology.
2011, 3(1): 31-36.
Abstract:
In the 2l century, sustainable development becomes the common theme. For urban construction, development pattern must also be run from the traditional high consumption to green-oriented. Green building is the only way to implement this change and it is also the inevitable trend for today's world. Referring to green building design specifications, this paper proposes the way of constructing 3d integrative BIM (building information modeling) by computer technology. It carry out an integrated management for geometric information of building space, functional information of building space, data integration on geometry information, functional information, building materials, equipments and other related professional data in construction. It provides the necessary basis for analysis for the calculation of green building design and evaluation. The green building evaluation based on the "green building rating standards" is realized by using of three-dimensional data visualization technology. It can provide architect with an effective tools for green building design.
In the 2l century, sustainable development becomes the common theme. For urban construction, development pattern must also be run from the traditional high consumption to green-oriented. Green building is the only way to implement this change and it is also the inevitable trend for today's world. Referring to green building design specifications, this paper proposes the way of constructing 3d integrative BIM (building information modeling) by computer technology. It carry out an integrated management for geometric information of building space, functional information of building space, data integration on geometry information, functional information, building materials, equipments and other related professional data in construction. It provides the necessary basis for analysis for the calculation of green building design and evaluation. The green building evaluation based on the "green building rating standards" is realized by using of three-dimensional data visualization technology. It can provide architect with an effective tools for green building design.
2011, 3(1): 37-42.
Abstract:
This paper did a preliminary study on BIM software integration solutions from the point of view of architectural software development. A conclusion was given on the problems of BIM software integration in both Interface Integration and system integration aspects. It also offer a reference for domestic BIM software development.
This paper did a preliminary study on BIM software integration solutions from the point of view of architectural software development. A conclusion was given on the problems of BIM software integration in both Interface Integration and system integration aspects. It also offer a reference for domestic BIM software development.
2011, 3(1): 43-47.
Abstract:
In order to adapt development of building's, SpasCAD is rebuild. This version improves primarily stability, easy to use and adds support for new technology. New Inspection and display system is designed according to characteristic of building, which can continue to analyze SpasCAD's model. This version provides new function for develop professional software. In this paper, important improvement and new specialty for SpasCAD are introduced.
In order to adapt development of building's, SpasCAD is rebuild. This version improves primarily stability, easy to use and adds support for new technology. New Inspection and display system is designed according to characteristic of building, which can continue to analyze SpasCAD's model. This version provides new function for develop professional software. In this paper, important improvement and new specialty for SpasCAD are introduced.
2011, 3(1): 48-51.
Abstract:
Considering the professional features of steel connection-joint design, this paper developed a new computer-aided design (CAD) program which is aiming at solving problems that the connection-joint design results unsuitable for human intervention of the software developed by our country. Program developing and researching is adopted the object-oriented development technique C++ to provide a flexible interactive function which can not only achieve the whole building's automatic connection-joint design of three-dimensional framework but also nodes merging, node design results modification and re-checking by designer. The program can make the connection-joint design of framework fast, simple and accurate to improve engineering efficiency. The achievement has been used in each module of the PKPM series steel structure design software as base class library of steel connection design in dynamic library plug-in form and obtained good application effects.
Considering the professional features of steel connection-joint design, this paper developed a new computer-aided design (CAD) program which is aiming at solving problems that the connection-joint design results unsuitable for human intervention of the software developed by our country. Program developing and researching is adopted the object-oriented development technique C++ to provide a flexible interactive function which can not only achieve the whole building's automatic connection-joint design of three-dimensional framework but also nodes merging, node design results modification and re-checking by designer. The program can make the connection-joint design of framework fast, simple and accurate to improve engineering efficiency. The achievement has been used in each module of the PKPM series steel structure design software as base class library of steel connection design in dynamic library plug-in form and obtained good application effects.
2011, 3(1): 52-55.
Abstract:
To solve the access problems of electronic signature on drawings and archived information of electronic file on the integration platform of railway survey and design, an information extration technique from signature table of drawings was proposed. With the styles and structure characteristics of the signature forms in the engineering drawings analyzed, it found the field in the signature table of drawings by feature recognition. Then informations of different styles engineering drawings were extracted and recognized automatically by template match of key words, which facilitates the electronic signature on drawings and archived information of electronic file. Its practical engineering application virified the effectiveness of this method.
To solve the access problems of electronic signature on drawings and archived information of electronic file on the integration platform of railway survey and design, an information extration technique from signature table of drawings was proposed. With the styles and structure characteristics of the signature forms in the engineering drawings analyzed, it found the field in the signature table of drawings by feature recognition. Then informations of different styles engineering drawings were extracted and recognized automatically by template match of key words, which facilitates the electronic signature on drawings and archived information of electronic file. Its practical engineering application virified the effectiveness of this method.
2011, 3(1): 57-62.
Abstract:
In China, flooding is one of the most common and frequent natural disasters, which can causes enormous life and property losses due to heavily damage and collapse of rural buildings. Hence, it is very important to conduct comprehensive study on flood damage to rural buildings. In this paper, the background and composition of the computer software AEFARUB, developed by authors, for analyzing and evaluating flood actions on rural buildings are introduced firstly, and then all sub-modules are described with emphasis on the distinguishing features and principles. The contents presented in this paper may be useful references for further study and application in engineering practices.
In China, flooding is one of the most common and frequent natural disasters, which can causes enormous life and property losses due to heavily damage and collapse of rural buildings. Hence, it is very important to conduct comprehensive study on flood damage to rural buildings. In this paper, the background and composition of the computer software AEFARUB, developed by authors, for analyzing and evaluating flood actions on rural buildings are introduced firstly, and then all sub-modules are described with emphasis on the distinguishing features and principles. The contents presented in this paper may be useful references for further study and application in engineering practices.
2011, 3(1): 63-66.
Abstract:
Project management information system is project managers indispensable informatization tools. This paper expounds the advantages of the project management information system based on process driver, introduces the working mechanism and the core concept design of the system, and indicates the effect of process driver in project management information system through the actual applications. Then it summarizes the important role of project management information system based on process driver to enhance the project management ability.
Project management information system is project managers indispensable informatization tools. This paper expounds the advantages of the project management information system based on process driver, introduces the working mechanism and the core concept design of the system, and indicates the effect of process driver in project management information system through the actual applications. Then it summarizes the important role of project management information system based on process driver to enhance the project management ability.
2011, 3(1): 67-72.
Abstract:
Compare with the wind tunnel experiment, the virtual wind-tunnel simulation has many advantages, such as no experiment model, less design time and less implementation cost. In addition, the virtual wind-tunnel simulation has high accuracy in building's mean wind load and more detail than wind tunnel experiment. The advantages above make wind tunnel technology ideal for pre-selection and optimization of building structure. Taking the life ring of fushun as an example, this paper introduces the advantages of wind tunnel technology in structures' aerodynamic shape and shows results of wind load.
Compare with the wind tunnel experiment, the virtual wind-tunnel simulation has many advantages, such as no experiment model, less design time and less implementation cost. In addition, the virtual wind-tunnel simulation has high accuracy in building's mean wind load and more detail than wind tunnel experiment. The advantages above make wind tunnel technology ideal for pre-selection and optimization of building structure. Taking the life ring of fushun as an example, this paper introduces the advantages of wind tunnel technology in structures' aerodynamic shape and shows results of wind load.
2011, 3(1): 73-78.
Abstract:
The project Expo Axis is a landmark building of Expo Shanghai 2010. Its roof system is composed of a cable-membrane structure and six free-form single-layer latticed shells named Sun Valley. Sun Valleys are different in shape and size and provide eighteen support points for cable-membrane structure. Because there is no clause used for free-form structure in current codes and specifications, it is difficult to carry on stability analysis for Sun Valleys. The Sun Valley NO.1 is studied for overall stability analysis in the paper. Ninety three load combinations are used in the process of buckling analysis, and D+0.7×L2+W315 is selected as control load for nonlinear overall stability analysis. And then with different initial conditions considered the influence of geometric nonlinearity, plastic properties of material and initial geometric imperfection on overall stability of the structure are researched. The results show that the stability load factor of structure can meet the relevant specifications of China in every condition. Some members enter the plastic state when first critical load is reached, so the structure will enter strength failure before overall unstable failure happen. The outputs of the study will provide useful reference for design and analysis of other free-form projects.
The project Expo Axis is a landmark building of Expo Shanghai 2010. Its roof system is composed of a cable-membrane structure and six free-form single-layer latticed shells named Sun Valley. Sun Valleys are different in shape and size and provide eighteen support points for cable-membrane structure. Because there is no clause used for free-form structure in current codes and specifications, it is difficult to carry on stability analysis for Sun Valleys. The Sun Valley NO.1 is studied for overall stability analysis in the paper. Ninety three load combinations are used in the process of buckling analysis, and D+0.7×L2+W315 is selected as control load for nonlinear overall stability analysis. And then with different initial conditions considered the influence of geometric nonlinearity, plastic properties of material and initial geometric imperfection on overall stability of the structure are researched. The results show that the stability load factor of structure can meet the relevant specifications of China in every condition. Some members enter the plastic state when first critical load is reached, so the structure will enter strength failure before overall unstable failure happen. The outputs of the study will provide useful reference for design and analysis of other free-form projects.
2011, 3(1): 79-82, 107.
Abstract:
With the research on "the Digitization Project of Urban Planning, Construction, Management and Service", which is the National Key Technology R&D Program in the 10th Five year Plan of china, Tianjin Cement Industry Design Institute played the demonstration role in survey and design enterprise information application. In recent years, project implementation team and Software Company cooperated very closely and built the "collaborative design management platform for project" together, in accordance the principles of standardization, systematic and integrated. Combined with modern project management methods, this system was built by the most popular software technology and could meet the major requirements of enterprise information management. Currently, the system has passed the national acceptance and has a stable operation for three years. Obviously, it has achieved both economic and social benefits.
With the research on "the Digitization Project of Urban Planning, Construction, Management and Service", which is the National Key Technology R&D Program in the 10th Five year Plan of china, Tianjin Cement Industry Design Institute played the demonstration role in survey and design enterprise information application. In recent years, project implementation team and Software Company cooperated very closely and built the "collaborative design management platform for project" together, in accordance the principles of standardization, systematic and integrated. Combined with modern project management methods, this system was built by the most popular software technology and could meet the major requirements of enterprise information management. Currently, the system has passed the national acceptance and has a stable operation for three years. Obviously, it has achieved both economic and social benefits.
2011, 3(1): 83-86.
Abstract:
In order to improve efficiency, reduce unsafe cash flow and provide the basic data for Project Cost Accounting System, a web-based Network Financial Reimbursement System was designed to replace the traditional paper-based system. Analyzing the traditional reimbursement processes and finding the balance of efficiency, security, accuracy and convenient, the author studied automatic processing of accounting documents, analyzed data structure of NC Financial Management System and designed the interface for NC System and Network Reimbursement System, which greatly reduced the workload of the finance staff. Running results showed that the classification of reimbursement information and database collection of NC database can realized corresponding automatically. In addition, Serverlet interface technology solved the security issues of Online Reimbursement System and NC System. However, this system still need to be improved and legally valid signature for electronic process and other issues should be studied in the future.
In order to improve efficiency, reduce unsafe cash flow and provide the basic data for Project Cost Accounting System, a web-based Network Financial Reimbursement System was designed to replace the traditional paper-based system. Analyzing the traditional reimbursement processes and finding the balance of efficiency, security, accuracy and convenient, the author studied automatic processing of accounting documents, analyzed data structure of NC Financial Management System and designed the interface for NC System and Network Reimbursement System, which greatly reduced the workload of the finance staff. Running results showed that the classification of reimbursement information and database collection of NC database can realized corresponding automatically. In addition, Serverlet interface technology solved the security issues of Online Reimbursement System and NC System. However, this system still need to be improved and legally valid signature for electronic process and other issues should be studied in the future.
2011, 3(1): 87-91.
Abstract:
The basic principle of project cost estimation lies is the decomposition and combination of a project, while the project quotation software is an effective tool for calculating project cost.Introducing the concept of WBS (Work Breakdown Structure) into the project quotation software will greatly improve the accuracy of project cost estimation and the efficiency of cost control.
The basic principle of project cost estimation lies is the decomposition and combination of a project, while the project quotation software is an effective tool for calculating project cost.Introducing the concept of WBS (Work Breakdown Structure) into the project quotation software will greatly improve the accuracy of project cost estimation and the efficiency of cost control.
2011, 3(1): 92-96.
Abstract:
Regulating the basic terms involved in the process of construction industry informationization can promote information and technology exchanges among various construction departments and fields. Furthermore, it can lay the foundation for the development of informationization work. This paper describes the background, principles and content of "Standard for basic terms of information technology applications in construction industry", and hopes to provide services for the application and implementation of the Standard.
Regulating the basic terms involved in the process of construction industry informationization can promote information and technology exchanges among various construction departments and fields. Furthermore, it can lay the foundation for the development of informationization work. This paper describes the background, principles and content of "Standard for basic terms of information technology applications in construction industry", and hopes to provide services for the application and implementation of the Standard.
2011, 3(1): 97-101.
Abstract:
This paper discussed the significance and appropriation for Virtual Reality applying in traffic safety education for pedestrian and compared VR with multimedia technique. Then relevant researches all over the world were introduced and some disadvantages of VR now using in pedestrian traffic safety education were concluded. At the end the future trend of VR in this area is prospected.
This paper discussed the significance and appropriation for Virtual Reality applying in traffic safety education for pedestrian and compared VR with multimedia technique. Then relevant researches all over the world were introduced and some disadvantages of VR now using in pedestrian traffic safety education were concluded. At the end the future trend of VR in this area is prospected.
2011, 3(1): 102-107.
Abstract:
This report briefly describes the history, major achievements and main propulsion strategy of TAISEI Corporation enterprise information construction. Finally, it introduces the focus of information technology in the future.
This report briefly describes the history, major achievements and main propulsion strategy of TAISEI Corporation enterprise information construction. Finally, it introduces the focus of information technology in the future.
2011, 3(1): 108-116.
Abstract:
BIM's mission is to support all project stakeholders fulfill their own responsibilities with high quality and efficiency using hundreds of different software tools during their whole lifecycles from conception to demolition. IFC/IDM/IFD will be the three indispensible pillars for BIM to achieve the above goal successfully.
BIM's mission is to support all project stakeholders fulfill their own responsibilities with high quality and efficiency using hundreds of different software tools during their whole lifecycles from conception to demolition. IFC/IDM/IFD will be the three indispensible pillars for BIM to achieve the above goal successfully.
