The support method and anti collapse ability of the closed-end floor slab

At the same time, as a structural energy absorbing component, it can play a role similar to a "building fuse", providing effective technical support for the transformation of the traditional seismic fortification concept of "steel as strong" to the scientific concept of "steel as soft".

The closed mouth floor support plate is welded with three wooden rods on a pressed galvanized sheet, and the traditional bundling and reinforcement work is completed by the mouth floor support plate in the factory, so that the steel bars are arranged evenly and the spacing between the upper and lower steel bars and the thickness of the concrete protective layer are effectively controlled.

On the basis of improving engineering quality, the on-site construction volume has been reduced, labor costs have been saved, and overall costs have been lowered, highlighting the advantages of closed mouth floor slabs over cast-in-place slabs and profiled steel plates in all aspects.

The supporting grid around the enclosed floor slab refers to all nodes on the surrounding area of the grid being load-bearing nodes, which can be supported on the top of columns or connecting beams. This method is a widely used support method due to its direct force transmission and uniform stress.

A three sided support grid refers to a three sided support grid when one side axis of a rectangular building needs to be designed as an open gate and passage due to production requirements, or when one side axis is not suitable for arranging load-bearing components due to building functional needs.

Two end support grid refers to a quadrilateral grid, which only requires the nodes at the opposite ends to form support, while the other end is an idle edge. This grid support method is rarely used.

The principle of setting point supported grids is to reduce the positive bending moment and deflection, so that the internal forces of all grids tend to be uniform. For single span multi-point support, the cantilever length should be 1/3 of the foundation span, and for multi span multi-point support, the cantilever length should be 1/4 of the foundation span.