Large-scale public buildings and industrial plants have the shadow of long-span steel structures, and the main work is under self-weight loads. In order to reduce the self-weight of steel building structures, it is usually appropriate to use steel structures as the main structure.
Steel structure drawing design
First of all, attention should be paid to the cooperative work of the upper and lower structures, and the influence of multi-directional earthquakes should be considered. A reasonable way to consider the cooperation between the upper and lower structures of steel buildings is to calculate the seismic action according to the overall structure model. The simplification of the substructure must be based on the principles of reliability and dynamics, that is, the effectiveness of equivalent stiffness and mass should be considered comprehensively.
This software is used to build design models and perform calculations and analysis. In the specific operation, the calculation model should be reasonably determined to ensure that the connection and structure of the roof of the steel building and other structures are consistent with the main supporting parts. In addition, stress analysis should be considered. In the calculation, in addition to simulating the force of the entire structure after forming, the special force of the construction process should also be considered to avoid the local stress exceeding the design value before the structure is formed. For the calculation and simulation of the construction process, it is necessary to consider component hoisting, working conditions at different construction stages, structural pre-deformation technology, pre-assembly and unloading of steel components, etc.
Steel structure layout
The structural arrangement should avoid the formation of weak parts due to local weakening or sudden change, resulting in excessive internal force and concentrated deformation. For possible weak parts of steel buildings, measures should be taken to improve the earthquake resistance. Therefore, when laying out the steel building structure, it should ensure that the quality and stiffness are evenly distributed, and the integrity and force transmission of the structure are clear.
The seismic action of the roof should be effectively transmitted downward through the support to avoid concentrated internal forces or large torsional effects on the roof. Therefore, the layout of the roof, support and substructure should be uniform and symmetrical. Therefore, in order to ensure the integrity of the steel building roof structure, the space force transmission system should be the first choice to avoid local weakening or sudden change of weak parts. A lightweight roofing system should be used, and the unit weight of the roofing system should be strictly controlled.
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