A method for reinforcing concrete columns with steel

Abstract

The invention discloses a method for reinforcing concrete columns by bonding steel to steel. A nearly circular reinforcing steel plate hoop is used to constrain the outer side of the to-be-reinforced column, and the to-be-reinforced column is constrained laterally by the reinforcing steel plate hoop, thereby indirectly improving the vertical resistance of the to-be-reinforced column. The entire column is constrained by multiple reinforced steel plate hoops, and there are gaps between the reinforced steel plate hoops, so that multiple reinforced steel plate hoops can be evenly arranged on the column to be reinforced, and lateral constraints can be better applied to the reinforced column; The gap between the reinforced steel plate hoop and the column to be reinforced is filled and compacted by the construction method of high pressure grouting, which improves the lateral restraint degree of the concrete column under the premise of saving cost.

Description

technical field [0001] The invention relates to a method for reinforcing a concrete column by sticking steel. Background technique [0002] At present, there are usually two ways to strengthen concrete columns: one is to directly improve the vertical compressive capacity of the column, such as increasing the cross-section or pasting steel plates, angle steel and other steel, such as figure 1 with figure 2 As shown, a certain vertical load is directly borne by the enlarged section or the pasted section steel, so the overall compressive capacity of the reinforced column is improved. The second is to indirectly improve the vertical compressive capacity of the column by imposing horizontal constraints on the concrete column, such as pasting high-strength fiber cloth on the column body for reinforcement, such as image 3 shown. The pasted fiber cloth does not directly bear the vertical pressure, but restricts the lateral expansion and deformation of the concrete column after ...

AI Technical Summary

Problems solved by technology

However, at present, the reinforcement method using steel is mainly the reinforcement method of vertically pasting section steel, and there is no reinforcement method similar to pasting fiber cloth and horizontally pasting steel plate hoops

This is mainly due to the high rigidity of the steel, so it is difficult and inconvenient to bend and process, especially when the size is large; at the same time, it is difficult to wrap tightly on the outside of the column to be reinforced like fiber cloth, and there is a gap between the two. Not in close contact

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