Reinforcement method of steel column in steel structure processing

1, column foot reinforcement method

Column foot plate thickness lack of reinforcement method: steel structure processing additional column foot stiffeners, in order to achieve the purpose of reducing the bottom plate accounting moment. Concrete is poured between the steel of the column foot to make the bottom of the column foot a rigid block. In order to increase the adhesion, the paint and rust on the outer surface of the column foot should be cleaned. Anchor anchor lack of reinforcement method: add additional anchor bolt. When the concrete foundation is more extensive selection. Holes are drilled into the concrete base, additional anchors are inserted, epoxy mortar is poured, and the entire column foot is wrapped in reinforced concrete. New reinforcement should be extended into the root, and the root of the original reinforcement welding.

2, column unloading method

When the column needs to be reinforced or replaced under unloading condition, the method of "joist for column" is adopted. When only the upper column is strengthened in the steel structure processing, the crane girder bridge can be used to support the roof roof frame, so that the column is unloaded. When the lower column needs to be strengthened or the process needs to cut off the lower column, a persistent joist can be set under the crane beam, and the upper column load (including the load of the crane beam) is in charge of the adjacent column (the adjacent column needs to be checked and strengthened, but also to check the foundation).

The selection of this method should take into account that the joist instead of the lower column will produce a certain deflection, forcing the original roof truss to sink, and then may damage the connection nodes of the connected members of the roof truss. To this end, a temporary load can be applied to the joist in advance so that the joist has a pre-deflection. The order of choosing this method is to strengthen the adjacent column, welding joist and adjacent column, add temporary load, welding joist and column, unload temporary load, reinforcement or cut off the lower column.

3, steel column reinforcement method

Section of reinforcement column. In the steel structure processing of general reinforcement column section with steel plate or steel, the selection of welding or bolt and the original column connected into a whole. Add support. Additional support to reduce the free length of the column, improve the bearing capacity. The stability of column is improved under the condition of constant cross section scale. Change calculation diagram, reduce column external load or internal force. Reinforcing steel columns with reinforced concrete around them can significantly improve the bearing capacity.

To sum up, it is the reinforcement method of steel column in the design of steel structure. We trust that we should have a certain understanding of the reinforcement method. After a certain understanding, we will need to carry out the operation in strict accordance with the corresponding operation process, and then ensure that the use of the structure can fully play out. Of course, no matter which link we need to be carefully treated, can not be careless, so as to ensure its firmness.