Analysis of BIM technical content and construction method of long-span steel structure?

BIM technology is to establish a three-dimensional model of its construction project with the help of computer technology, and then use digital technology to combine the actual construction project data with the established three-dimensional model to establish an information database. Therefore, BIM technology can not only show the specific building information model, but also show the specific process plan in the building process. It can be said that BIM technology is a brand-new architectural concept with the development of the times. 2 Characteristics of BIM technology 2. 1 Visualization characteristics Building a building information model in BIM technology can not only present all the contents involved in the geometric model of building engineering, but also integrate the professional knowledge of physics, and finally form a diversified knowledge system, effectively and intuitively showing the building engineering entities in the form of three-dimensional models. Secondly, BIM technology has good visualization characteristics, which can clearly express the construction progress and cost, and can make timely, accurate and scientific decisions on all stages of the project by combining the construction progress and material report. 2.2 Coordination characteristics In a construction project, all relevant units and departments need to actively cooperate and coordinate from the initial planning to the design and subsequent construction, so it is necessary to do a good job of coordination among departments. A difficult construction project, such as a long-span steel structure, needs a lot of communication and coordination. With the help of BIM technology, it can change the situation of low efficiency of construction projects caused by inadequate communication and coordination in the traditional mode, and also play a positive role in ensuring the construction quality of projects. 2.3 optimization characteristics in order to ensure the quality of building construction, it is necessary to improve and optimize the construction technology in the two stages of engineering design and construction. With the help of BIM technology, the corresponding parts can be better, more scientific and more reasonable. Especially in recent years, the structure of architectural engineering has become more and more complex, and the requirements for architectural design and construction are also higher. It is difficult to ensure the quality and efficiency of building construction by relying solely on manpower. The application of BIM technology can effectively solve this problem. 2.4 Information output is fully combined with the actual situation, and BIM technology is applied to the engineering construction process, which can more intuitively complete the visualization and visualization of rocks. And can complete the construction of three-dimensional model more timely and accurately, and can efficiently write special inspection reports and submit them to the owners, effectively improving the efficiency of information transmission in construction projects. 3. Analysis of construction method of long-span steel structure 3. 1 High-altitude in-situ installation method The essence of high-altitude in-situ installation method is to install corresponding supporting structures in combination with construction conditions to ensure the stability of the whole project. After the construction of the whole structure is completed, on the basis of ensuring safety, the previously built supporting structure can be removed to ensure that the structure meets the design standards. Secondly, the types of installation parts can be divided into two types: ① Single-piece installation, no use of large cranes, good installation accuracy and convenient construction. Its actual operation is mostly to install scaffolding on the structure and use it as a support to install the whole structure in situ at high altitude. This method is usually used for structures with small height and span; (2) point support is often used in unit installation, which has the advantages of convenient construction, low risk factor and high construction efficiency. 3.2 Sliding construction and installation method Sliding construction and installation is a construction method that uses synchronous traction equipment to transfer the structure divided into several construction areas from the assembly area to the position to be used according to the set track. This method has certain requirements for the stiffness of the structure, and it needs to lay tracks, which is complicated to operate. At the same time, the development of sliding construction installation method is the extension of synchronous control technology, which can be roughly divided into three ways: winch, hydraulic jack and hydraulic jack pushing. This method can reduce overhead construction, use less supporting materials and ensure the structural quality easily. 3.3 Hoisting construction and installation method The essence of hoisting construction and installation method is to install the components and nodes on the ground or other suitable environmental conditions, and it is necessary to transport the institutions to be installed to the designated location with the help of special mechanical equipment. This method has the advantages of high construction safety, less workload and good welding quality, and does not need too many scaffolding, which effectively reduces the overall cost of roof construction. Secondly, the hoisting construction and installation method requires many operations, such as: the structural form of hoisting unit must ensure certain regularity, and the stability of hoisting unit must meet the requirements of established standards. 4. Application of 4BIM technology in long-span steel structure 4. 1 3D steel structure model database is established during construction, steel structure members are transported to the established 3D model database in combination with construction design drawings, and then the 3D model is established. Using the database model, we can fully and accurately understand each working procedure in the construction process. With the help of three-dimensional space to restore the garden and control the running track of the crane, the construction part can be transported to the designated position more efficiently, which will create a good foundation for the subsequent construction work and the rational utilization of resources, ensure that the overall construction work can be fully prepared at the beginning of the project construction, and create a good foundation for the step-by-step construction work. 4.2 steel structure virtual reality scheme disclosure professionals in the construction industry know that the construction work of construction projects has certain regularity. In the implementation of construction work, how to effectively ensure the efficiency of construction, how to use intuitive previews or models to solve various problems in the construction process more efficiently, fundamentally avoid the waste of resources, prevent construction risks as much as possible, and finally achieve the purpose of improving the utilization efficiency of construction resources and shortening the construction period. This also fully shows that the application of BIM virtual technology to the engineering construction process is very helpful for the smooth development of construction work. Before the formal start of engineering construction, designers and technicians must be arranged to do the bottom work, because the overall quality of construction workers is uneven at the initial stage of formal construction, so the whole construction process can be displayed to the construction workers in a visual way. Using TeklaStructures model through 3D view can preview the assembly sequence and installation method more intuitively, which can ensure that the construction workers can fully grasp the development of various tasks in the construction process and promote the improvement of installation efficiency. 4.3 Checking calculation and simulation of structural hoisting In the process of implementing steel structure construction, hoisting analysis and calculation is the key work in engineering construction. By fully combining the three-dimensional model, all the information and models involved in the steel structure can be restored, the parameters of the branch structure can be calculated with the help of structural software, and the crane equipment can be simulated to simulate the lifting calculation of the station, thus ensuring the safety of the lifting work in the engineering construction. 4.4 Detail node design and collision detection With the help of 3D modeling, on the basis of the original design, the steel structure members, steel plates and side decorations are designed in depth. By means of 3D section creation and secondary collision detection, the effect of side decoration design is ensured from the design point of view, and operation and construction are avoided as much as possible. Conclusion To sum up, long-span steel structure has been widely used in architectural design, and its development level can also be reflected by the level of architectural technology. The application of BIM technology in steel structure construction can not only improve the construction quality of the project, but also solve the construction problems such as technical review and technical disclosure during the project construction while realizing multiple optimization of design and construction, which provides new ideas for improving the construction management of long-span steel structures.

I believe that after the above introduction, everyone has a certain understanding of the technical content of BIM and the analysis of construction methods of long-span steel structures. Welcome to Zhong Da for more information.

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