1. Function of support between columns:
Ensure the overall stability and longitudinal stiffness of the plant framework; As the lateral support of the column, the effective length of the column outside the frame plane is determined; It bears sharp longitudinal and horizontal loads from the power house, mainly wind loads.
2. Layout principle of support between columns:
Spacing of supports between columns ---- when there is no crane, it should be 30-45m; The inter column support may be provided between the first columns at the end of the plant. Why can it be set at the end of the temperature range? Main reason: in general, the support between columns of the workshop without crane only bears the wind load transmitted from the gable. The wind load is relatively small, the longitudinal deformation of the workshop is also small, and the secondary internal force (relative to the lateral calculated internal force) generated on the column is small. Therefore, it can be set between the first columns at the end of the workshop.
3. Form of support between columns:
In general, in the design of steel structure system, the tensile strength of steel is often used first, followed by the compressive strength (there is the problem of axial pressure instability), and then the compression bending. Therefore, for general light steel plants without cranes, the support between columns only bears the wind load transmitted from the gables, and the load is small. Moreover, the wall enclosure structure of light steel structure plants is mostly profiled steel plates and thermal insulation materials, and the column top displacement limit of the plant is very wide. Therefore, the most widely used round steel with cross-over tensioning devices (such as basket bolts) is used as the support. At this time, the section is small and the components are relatively light, Save materials. Of course, the disadvantage of using round steel support is that the tensioning device is easy to relax. If the end thread is roughened after tensioning (or double nuts are recommended), the relaxation of round steel can be reduced to a certain extent
