Super-high-rise buildings have the characteristics of large volume, multiple functions and complex structural forms, which requires a high degree of refinement in design. The application of BIM technology in the structural design of super high-rise buildings makes the whole project more systematic and improves the efficiency and accuracy of data processing, thus effectively saving the construction cost of smart cities.
2 the importance of 2BIM in the structural design of super high-rise buildings
2. 1 Promote architectural design innovation. With the development of computer technology and smart cities, the structural design of high-rise buildings has changed from plane angle to space angle. The application of BIM technology changed the thinking of designers and builders. When designing super high-rise buildings, we should not only consider the time and space factors, but also scientifically and reasonably adjust the computer design of the external space and internal space of the building. BIM technology has three-dimensional data logic, which can effectively help design enterprises correctly indicate the design connotation, and directly obtain the computable attributes of design products through the construction of models. The intuitive expression of BIM technical model can improve the work efficiency of staff and reduce the time of drawing review [1]. 2.2 changes in the way of thinking. Architects should combine BIM technology to innovate design architecture, and change the thinking of architects and enterprises on the basis of two-dimensional design and three-dimensional design application. BIM technology emphasizes the return of architecture, which can effectively improve the feasibility of architectural designers to explore architectural form, space and time, and the practicability of digitalization of various information and data. 2.3 Optimize the overall structure of architectural design. Using BIM technology in engineering construction can effectively improve the level of construction quality and accurately transmit digital information. In the application process of BIM technology, staff can dynamically monitor according to the information of BIM three-dimensional model and cost dimension, and can obtain work information at any time to realize cost comparison between stages, thus achieving accurate management [2].
Application of 3BIM system in structural design of super high-rise building
3. 1BIM model and corresponding process establishment. In the process of building construction, a scientific and reasonable BIM workflow should be formulated to ensure the smooth development of the work. In general, the effective cooperation between architectural design and construction and the establishment of communication platform can solve the problems in the management of super high-rise buildings. The construction model of BIM 3D technology is shown in figure 1. The structure and decoration in the construction of high-rise buildings are deeply designed, and the engineering comprehensive map is further optimized. In the process of construction, combined with the design drawings of engineering construction, all parts of the construction process are superimposed and integrated to realize three-dimensional visualization. In addition, in the construction process of high-rise buildings, we should pay attention to interdisciplinary issues. BIM test system will get the corresponding test report after the test, which is convenient for staff to analyze and improve related problems and avoid rework caused by construction mistakes. It can be seen that BIM technology has greatly improved the progress of building construction and saved the cost [3].
3.2 Improve the rationality of design and building components. In the process of high-rise building construction, BIM technology should be combined to improve the quality of building engineering. At the same time, BIM technology is applied to simulate and judge the architectural design, and unified management is carried out to deal with the problems encountered in construction. Strengthen the application of BIM technology in building components, accurately measure the size and positioning of components, improve the overall framework of building structures, and attach importance to deepening design of various disciplines.
3.3 Visualize the construction through the comprehensive map. The on-site construction of high-rise buildings needs a lot of information and structural drawings, so the modeling of BIM technology is very important. In order to visualize each major, it is necessary to establish a three-dimensional model by using BIM technology, so that the actual construction situation is more consistent with the virtual construction situation, thus improving the quality of building construction. In the construction stage, when purchasing and installing the relevant equipment and building components of the construction project, the staff should make relevant records to ensure the integrity and effectiveness of the information and provide reference for normal construction. When selecting the construction scheme, the three-dimensional model can be used to improve and modify the construction scheme to ensure the construction quality and safety as much as possible. In addition, the visualization of BIM model can scientifically manage the construction site of high-rise buildings and realize unified planning.
3.4 Check the rationality of the design and simulate the construction progress. Super high-rise buildings mainly rely on manual intervention of BIM system. In order to have good simulation characteristics, we should integrate the professional experience of human resources, optimize the design of construction drawings in the process of initial inspection, find out the problems existing in the design drawings in time, effectively solve them and make relevant records. Follow-up construction should be combined with the construction design drawings, not blindly construction, to avoid rework. Generally speaking, we can display various construction disciplines through three-dimensional building models, import Navisworks software, and then simulate the construction progress of each process to ensure the rationality and coordination of each construction progress.
3.5 Improve the design quality of building structures. In the traditional structural design work, designers mainly use CAD to design and draw, but this method can not provide users with accurate and detailed information. Using BIM technology in the initial stage of building structure design can show the building structure mode and make users know and understand the building structure accurately. Most of the structural design work of building construction can be completed by BIM technology, which can not only show the dynamic structure of the building, but also show the parameters of the building structure more intuitively, and provide the first choice for the design unit. Steel structures are mainly used in construction projects in China. In the process of steel structure modeling, the staff should handle the connection of the structure and strengthen the layout. Steel structure involves various connection forms, mainly beam-column connection and beam-column connection. In the design of steel structure, it is usually necessary to design and parameterize each connector according to the actual height of the beam. In the construction process, BIM technology can play the role of parameter sharing, thus effectively controlling the number and spacing of screws. Designers only need to adjust the parameters in the system to form new connecting parts. Designers need to draw detailed drawings of steel bars and connectors to improve the design quality of these two parts, while builders need to refer to the corresponding position design to determine the positions of steel bars and connectors according to the actual situation, thus ensuring the design quality of steel structures.
3.6 Relevant application of contract management. BIM technology has great advantages in bidding for construction projects. In this process, it is necessary to extract accurate quantities, design targeted construction organization plans in the construction, and achieve accurate bidding. BIM technology is adopted in subcontractor selection and contract management, and contract information is input into BIM. When there are changes in the construction process, relevant personnel should adjust the project price in time.
In short, with the construction of smart cities and the rapid development of super-high-rise buildings, we should study the application of BIM technology in the structural design of super-high-rise buildings, attach importance to the establishment of BIM models and corresponding processes, improve the rationality of design and building components, realize visual construction through comprehensive maps, and then plan and manage the construction site of super-high-rise buildings accordingly, so as to promote the development of the construction industry.
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