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Application of Chengdu BIM technology in expressway design a

来源:未知作者:admin 日期:2020-05-08 17:49 浏览:

Application of Chengdu BIM technology in expressway design and construction Eight hundred and eighty-eight thousand one hundred and eleven Highway engineering is an important part of the transportation hub of our country. With the continuous improvement of the speed of highway construction in our country, people pay more and more attention to the quality of highway engineering and strengthen the management of highway engineering quality. It can not only guarantee the safety performance of highway engineering, but also extend the road. Use years [1]. At present, the society has entered the era of big data. The highway engineering has the characteristics of large scale and long construction period. As a new technology of digital development, B IM technology is a developing trend. At present, the B IM system is widely used in the life cycle of various architectural engineering, including planning, Five stages of design, procurement, construction and operation, and B IM can effectively control the construction cost [2-3]. Based on the characteristics of B IM technology, this paper discusses the application of B IM technology in highway management from two aspects of guiding the design of highway engineering and controlling the cost of engineering. Eight hundred and eighty-eight thousand one hundred and eleven 1 BIM concept and features

B IM is the modeling of building information. Compared with the traditional method, the B IM technology is more conducive to the standardization and fine management of the engineering, which can greatly reduce the risk of the construction engineering and improve the process efficiency [4]. The architecture design soft ware technology based on B IM mainly includes the following characteristics . Eight hundred and eighty-eight thousand one hundred and eleven (1) three dimensional modeling. The elements of the BIM system cover all three dimensional components, almost all of the building information, which can provide a visual three-dimensional model for highway engineering, and can also update and share the data conveniently and quickly. The model can convert the solid structure of bridge deck and pier into digitization, and the information is stored in the database. The information mainly includes geometry, physics, construction, technology and other information. Eight hundred and eighty-eight thousand one hundred and eleven (2) visual simulation. The 3D technology of BIM can be used to check the collision in the early stage, to optimize the engineering design, and to reduce the possibility of error loss and rework that may exist in the construction stage. The BIM technology can display the concrete information of the building very intuitively, reduce the complexity of the construction, and provide convenience for the construction, and can also solve the overlapping problems in the traditional two-dimensional construction drawings. Eight hundred and eighty-eight thousand one hundred and eleven (3) data association. BIM can achieve Association display and intelligent interaction in all kinds of digital structure entities. If any data in the model database is modified, the connection will be displayed immediately. It can effectively overcome the problems of software communication barriers in the traditional work. The design will involve the subgrade, the pavement, the bridge structure and the equipment and so on. Through the BIM, it can carry the related information and realize the digitalization. Eight hundred and eighty-eight thousand one hundred and eleven 2 guide highway engineering design
2.1 test design rationality
The design personnel of different specialties generally use plane map to communicate, not only intuitionistic but also easy to make mistakes. In the design, the disharmony between a professional is likely to bring huge cost add in the construction. In the design phase, the BIM model has obvious advantages for design checking, collision checking and engineering quantity statistics. The designers use work set and link management to integrate the model and test the problem, carry on the collision examination, greatly reduce the possibility of error in the construction process. Eight hundred and eighty-eight thousand one hundred and eleven 2.2 guide design change
In order to ensure the quality and stability of the highway, it is necessary to change the original design in order to ensure the quality and stability of the highway. In order to ensure the quality and stability of the highway, the management layer should be reacted to the new emergent situation in time so as to guide the next application. Work. Based on the basic characteristics of BIM, BIM technology is used to respond to design changes quickly, and a new design plan is obtained under the premise of controlling cost. BIM can achieve Association display and intelligent interaction in various digital structural entities, such as design drawings and diagrams that can be linked together to improve work efficiency. When the data in the database is modified, the connection will be displayed immediately. Because of the data directly to the model, when the new road conditions are found in the construction, the real-time data can be updated easily and the design changes can be quickly responded to. The designers use the work set and link management to integrate the model and test the problem, check the rationality of the design, and finally get a better design. Through the three-dimensional BIM model and setting up the standardized template, the two-dimensional construction drawings can be generated directly, and the construction process of the whole project is simulated. The rationality of the construction progress and coordination of the various specialties are analyzed in order to adjust the construction plan in time. Eight hundred and eighty-eight thousand one hundred and eleven 3 control project cost

Because there are many construction cost management institutions in our country, the number of management institutions is very large, and there are different regulations and standards between each department, and the lack of sufficient communication and communication between different institutions and departments, and some technical and data problems, which all lead to the cost of the project. The sharing of cost data with other departments is hindered, which ultimately has a serious impact on the authenticity and reliability of the project cost. As a parameterized model, the BIM model is given the parameters of size, model, material and other parameters. After the visual design environment is repeatedly verified and modified, it can be directly applied to the project budget, which provides the basis for cost control and construction final calculation. How to carry out the calculation of fast and accurate earth rock mass is of great significance in engineering design and construction. The basic idea based on the DEM earth and stone calculation is similar to the method of volume integration. The top surface grid model and the bottom grid are calculated by the difference value according to the plane grid model and the discrete point database. Model, the height difference between the grid point of the top surface and the grid point of the bottom is used as the integral height, the area of the unit grid is used as the integral unit, and then the column is added to the amount of engineering. The mathematical expression is [5]:
H (x, y) = Zs (x, y) - C (x, y) (1)
V = H (x, y) ds (2)
In the formula: H (x, y) is the elevation difference of the grid point. It is generally considered that when h (x, y) > 0, the calculation results are filled, and when h (x, y) < 0, the calculation results are excavated; V is earthwork volume. According to the calculated amount of engineering, the cost of construction can be budgeted reasonably, the human resources and material resources consumed in the highway engineering can be budgeted. At the same time, the construction resources and the cost consumption can be analyzed reasonably, and the purpose of the management of the cost of highway engineering is  . . Eight hundred and eighty-eight thousand one hundred and eleven 4  conclusion
Combined with the advantages of three-dimensional visualization and information,   BIM  technology has been widely used in highway engineering, not only the highway design and cost budget, but also the construction simulation     preventive maintenance     accident prevention and other aspects of     with the continuous development of computer aided technology, BIM  technology in the actual design process can improve the shortcomings and shortcomings of traditional design, not only can improve the decision     design     the construction of scientific, and can also raise the accuracy of the cost of information     at present, the existing   BIM  the software in road section display     cost automatic calculation and other aspects still have some shortcomings, these gaps still need to be related to the software industry to develop and make up. Eight hundred and eighty-eight thousand one hundred and eleven
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