Considerations for steel structure engineering design
1 Reasonable choice of steel
In the process of steel structure engineering design, the selection of reasonable steel has a very critical role. It can be said that the task of steel selection is both important and difficult. There are many kinds of steel in China, and it is difficult to choose the most suitable steel for steel structure construction from many steels, and the current steel structure engineering construction design for steel requirements are also high, different steel structure engineering requirements for steel structure strength, deformation and fatigue stress are also different, so there is a certain degree of difficulty in the selection. Therefore, in the design, in order to better play the role of the steel structure, must start from the actual, combined with the specific construction requirements of the scientific selection of steel. In the selection of steel, it is also necessary to scientifically judge its applicability. At present, the span of the building steel structure and the load are relatively large, mainly used in the more complex high-rise steel structure project or large steel structure project. Therefore, the steel must meet the construction needs of the steel structure, be able to withstand high temperatures and vibrations, and be easy to disassemble. This requires the designer to investigate and study before design, and comprehensive analysis, fully consider the suitability of the steel structure, before the design work can be carried out.
2 Focus on the design of the details of the steel structure
The design of the detail part of the building steel structure often has an important influence on the stability of the whole structure. Therefore, attention must be paid to the design of this aspect. This requires the designers to determine the steel structure after the program, must be the steel structure of the force system and detail nodes for specific calculations, and according to the actual situation to improve the science. For the design of the steel structure force system, most of the current steel structure projects use the pole system structure, which requires the steel to have a large strength grade, and the size of the cross-section to meet the construction requirements, the production can be assembled on site, and the binding force between the members is small. This requires the designers to grasp the design focus in the process of design, to ensure the stability of the connection between the nodes of the components. In the design of the detail nodes, must be meticulous, because the design of the detail nodes is more complex, must be strictly designed, and to meet the actual construction needs.
3 Improve the stability of the steel structure design
Steel structure designers first need to analyze the stability of the structure from its integrity, and to fully consider the overall stiffness of the steel structure and the degree of instability. Currently, the design is used to calculate the stability of the steel structure by the method of discount coefficient and critical pressure solution, and in general, the stability of the axial compression bar is also calculated by these two methods. Because the internal force of the building steel structure will be affected by the large deformation of the flexible structure, in the calculation of elastic stability, not only need to consider the structural integrity characteristics, but also need to fully consider the second-order analysis, designers can not ignore this point.
In the construction of steel structure engineering, the use of steel structure engineering for design can not only make the steel structure engineering with a larger span space, while there are also advantages such as convenient installation, lower cost and so on, so that its application in steel structure engineering is more and more extensive. With the prosperous development of China's industrial market, the number of steel structure projects will increase sharply, which puts forward higher requirements for the design of steel structure projects. As the relevant designers, they need to master the main points of steel structure engineering design work, so as to ensure that China's steel structure engineering design work can be done better, and ultimately promote the better development of China's steel structure engineering industry.