Construction method for partial replacement of concrete column

Abstract

The invention relates to a construction method for partial replacement of a concrete column. The construction method comprises the following steps that construction is prepared, partition paying off and numbering are conducted, a settlement observation point is set, a temporary support system is erected, a safety support system and a workbench are erected, partial concrete of the column is chiseled away, interface processing is conducted, formwork mounting is conducted, concrete casting and tamping is conducted, formwork dismantling and concrete curing are conducted, and off-load support is dismantled. Displacement and settlement of an upper structure of a replacement region can be eliminated or reduced, concrete with low strength or serious defects is chiseled away, casting is conducted by adopting expansive concrete which is one strength grade higher than original replacement region concrete and good in the self-flow property. Compared with the prior art, the method has the advantages that construction is simple, quick, and easy to grasp, and construction comprehensive cost is low; the quality and construction progress can be guaranteed, and higher application and popularization value is achieved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for local replacement of concrete columns, which is suitable for local repairs of low strength or serious quality defects in the compression areas of components in concrete structures. Background technique [0002] Concrete columns are elongated members used to support beams and trusses in concrete structures. Concrete columns mainly bear pressure in engineering structures, and sometimes bear bending moments at the same time, and are used to support beams, trusses, floors, etc. According to relevant national and local regulations and document requirements, the pouring of vertical load-bearing components such as concrete walls and columns should be performed prior to the pouring of horizontal load-bearing components such as beams and slabs. Since the vertical load-bearing components and horizontal load-bearing components are poured separately, ...

AI Technical Summary

Problems solved by technology

In actual construction, due to the relatively dense interlacing of steel bars in the beam-column joint area and the low quality awareness of workers, the concrete vibration quality in the beam-column joint area is low, resulting in low strength or honeycomb, pockmarked and even pitted areas in the concrete structure. Serious quality defects and other issues

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