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Stress Characteristics of Steel Structure Warehouse/Plant Foundation

1.Stress characteristics of steel structure warehouse/plant foundation.

The foundation of steel structure construction such as warehouse/plant building usually adopts the individual foundation, according to eccentric compression design.

For a rigid frame steel plant with a low height and no crane, the connection between the foot and the base is usually articulated. The base face is only the horizontal force generated by the vertical pressure and wind load generated by the superstructure. The foundation base of horizontal wind load is relatively simple with less eccentric bending moment.

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To high altitude with bridge crane and gantry frame steel structure factory /warehouse building and plant steel bent structure, especially when larger tonnage crane (20 t crane single span two or more), in order to effectively improve the resistance to lateral stiffness of the structure to control the lateral displacement, column feet usually transverse just receive, longitudinal hinge design. The vertical horizontal load of the plant is transmitted through the column support to the foundation roof. And in the transverse, because of light weight steel structures, structural natural vibration cycle is long, horizontal seismic effect is relatively small, the control action of transverse horizontal load are usually for the level of the crane brake load applied formula of wind two pole axial force can not equal. The formula is based on elastic stability theory, It is suitable for cross - rod with the same length and same cross section

1) the intersection of the other one is compressed, the two sections are the same and the intersection points are not interrupted;

2) intersecting another bar under pressure, the other bar is interrupted at the intersection but is connected with the nodal plate;

3) the intersection of the other rod is drawn, the two sections are the same, and they are not interrupted at the crossing points;

4) intersecting another rod, which is interrupted at the crossing point but is connected with the nodal plate

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