Steel structure design and construction points analysis, super practical!

Drawing design: first of all, we should pay attention to the cooperative work of the upper and lower structures, and consider the effect of multidirectional seismic action. The most reasonable way to consider the cooperation of the upper and lower structures is to calculate the seismic action according to the whole steel structure model. The simplification of substructure must be based on reliable and dynamic principle, that is, the effectiveness of equivalent stiffness and mass should be considered comprehensively.

The design model is modeled and analyzed by software. During the specific operation, the calculation model should be reasonably determined to ensure that the connection of the roof and other structures with the main supporting parts is consistent with the structure. Stress analysis should also be considered. During the calculation and analysis, besides simulating the force of the whole structure after forming, special force of the construction process should be taken into account to avoid the destruction of the structure before forming because the local force exceeds the design value. For the calculation and simulation of the construction process, it is necessary to consider the hoisting of components, working conditions in different construction stages, structural pre-deformation technology, pre-assembly and unloading of components, etc.

Structural layout: structural layout should avoid the formation of weak parts due to local weakening or mutation, resulting in excessive internal force and deformation concentration. Measures should be taken to improve the seismic capacity of the possible weak parts. Therefore, when the structure is arranged, the balance of mass and stiffness should be ensured, and the integrity and force transmission of the structure should be clear.

The seismic action of the roof should be effectively transmitted down through the support. Therefore, the layout of roof, support and substructure should be evenly and symmetrically. To ensure the integrity of the roof structure, the space transmission system should be preferred to avoid local weakening or mutation of weak parts; Light roofing system should be used, so the unit weight of the roof system should be strictly controlled.