How to design the multi-storey steel industrial warehouse structure?
Design of steel structure of multi-storey industrial warehouse
Frame structure system
The warehouse of this structural system is a steel frame structure in the transverse direction and a bent frame structure in the longitudinal direction, and the support between the columns is arranged in the longitudinal direction to resist the horizontal load. The warehouse with this structure is shorter horizontally and longer vertically, and the longitudinal length of the warehouse is increased by setting structural joints, but the support between columns may affect the layout of the process.
Pure frame system
The industrial warehouse is designed in both vertical and horizontal directions as a rigid frame without inter-column support. The use space of this structure is not affected, but the requirements for the moment of inertia of the column in both directions are basically the same, which increases the amount of steel.
Hybrid system of steel frame and support
The hybrid system of steel frame and support is different from the first form. It is longitudinally designed as a mix of steel frames and supports, with mixed supports to resist horizontal forces. This form can avoid the longitudinal bending moment of the column, but the stiffness of the floor must meet the design requirements. Otherwise, there will be uncoordinated deformation between the side pillars, and the support function of the pillars will also be affected.
Problems that should be paid attention to in steel structure design of multi-storey industrial warehouse
The structural forms and loads between multi-storey industrial buildings and multi-high-rise civil buildings have their own characteristics. It has a large span, a high number of floors, a thick floor, and few internal partition walls, and there is a crane load. When using the software for spatial analysis, some problems need to be paid attention to.
1. Plan and vertical layout rules to avoid sudden changes
Multi-storey industrial warehouses generally use a steel frame structure system due to the requirements of process layout and large space span. The arrangement of the structure is best to make the column network uniform and symmetrical. In order to reduce the space torsion effect of the house, the stiffness center of the house should be similar to the mass center. The steel structure system should be as regular and simple as possible, and can transmit force clearly. When setting up the structural system, attention should be paid to preventing the shrinkage, concave angle and stress concentration of sudden deformation.
2. Reasonable arrangement of support system
When the seismic intensity is high and the equipment load is large, in order to reduce the influence of horizontal load on the steel structure, control the structural displacement, and optimize the column section can coordinate the process to arrange the support system of the steel frame structure. Bracing can reduce the calculated length of structural members, increase stability, enhance the overall stability and spatial stiffness of the warehouse, and transfer some horizontal loads to main load-bearing members such as columns.
