Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
The China steel structure is relatively light, the structure is simple but firm, so the construction is more light and flexible, so it is favored by many construction projects. When we are constructing, we have to take into account the possibility of all aspects, especially the reinforcement of its structure. So, how can China steel structures prevent the foundation from sinking?
China steel structure foundations usually use separate foundations, which are designed according to eccentric compression. In simple terms, it is reinforcement, and all structural columns are circled with I-beam or channel steel to form a mesh.
For the portal frame structure with low height and no crane, the connection between the column foot and the foundation is usually designed as a hinge. The top surface of the foundation is only subjected to the vertical pressure generated by the superstructure and the horizontal force generated by the wind load. The additional eccentric bending moment on the bottom surface of the foundation caused by the horizontal wind load is relatively small, and the foundation design is relatively simple.
For high-height gantry-type rigid frame China steel structures and steel-frame structure workshops with overhead cranes, especially when the crane tonnage is large, in order to effectively improve the lateral stiffness of the structure to control lateral displacement, the column feet are usually It is designed to be rigid laterally and hinged longitudinally.
The longitudinal horizontal load of the factory building is transmitted to the top surface of the foundation through the inter-column support. In the lateral direction, because of its light weight, long structural natural vibration period, and relatively small horizontal seismic action, the lateral horizontal load that controls is usually the horizontal braking load plus wind formula of the crane, and the axial forces of the two rods can be unequal. The formula is based on the theory of elastic stability, and is suitable for cross-inclined rods with the same length and the same cross-section.
The above is about how to prevent the sinking of large-scale steel structure foundations. Before construction, we should take corresponding measures to prevent the factory building from sinking. At the same time, the construction personnel will also according to the actual environment and other factors and the current situation. To make corresponding rectification, these are to ensure the quality of our construction.
