Linyi Wanhui Metal Materials Co., Ltd.
What are the support methods for grid steel structures?
Oct 10,2025
Two side supported grid refers to a quadrilateral grid with only the nodes on the opposite sides designed as supports, and the other two sides as free edges, which are rarely used.
Surrounding support grid refers to all nodes around the boundary of the grid being support nodes. Supporting nodes can be supported on the top of columns or connecting beams. Baotou steel structure truss has direct force transmission and uniform force distribution, and is a common steel structure support method.
A three sided support grid refers to a rectangular building whose side axis must be designed as open doors and passages, or where load-bearing components should not be arranged on one side due to building functional requirements.
Two side supported grid refers to a quadrilateral grid with only the nodes on the opposite sides designed as supports, and the other two sides as free edges, which are rarely used.
The principle of setting point supported truss is to reduce the positive bending moment and deflection, so that the internal force of the entire truss tends to be uniform. For single span multi-point support, the cantilever length should be 1/3 of the middle span. For multi span and multi-point supports, the cantilever length should be 1/4 of the middle span.
The combination of peripheral support grid and point support grid refers to the addition of intermediate support points inside the building on the basis of peripheral support, which can effectively reduce the peak internal force and deflection of grid members. This form is particularly suitable for large column grid industrial plants, warehouses, exhibition halls, and other buildings.
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