Underpinning structure and construction method for replacing unqualified shearing wall concrete

Abstract

An underpinning structure for replacing unqualified shearing wall concrete comprises a plurality of stand columns, upper cross beams, lower cross beams and supports, wherein the stand columns are arranged on two sides of a to-be-replaced concrete shearing wall in a replacing layer; the upper parts of the stand columns pass through an upper floor to be connected with the upper cross beams and the lower parts are carried by the lower cross beams; the upper cross beams pass through ports dug out on a shearing wall of an upstairs floor; the lower cross beams pass through ports dug out on a shearing wall of a downstairs floor; the supports are arranged under the lower cross beams to carry the lower cross beams; and the whole carrying structure can stand weight of all structures over the replacing layer. The construction method comprises steps of investigating on-site, unloading, building a carrying structure, removing and chiseling concrete, building a template, casting concrete, and detecting construction quality. A concrete shearing wall failing to meet local demands is replaced and detachments of the whole structures failing demands can be avoided; a structure after the replacement is the same as the previous structure; and project construction time limit and engineering cost can be greatly reduced.

Description

technical field [0001] The invention relates to the field of building construction, in particular to an underpinning structure and a construction method for replacing unqualified shear wall concrete. Background technique [0002] High-rise residential buildings in general cities generally adopt shear wall structures. Due to the fast construction speed of commercial housing, it is often because the strength of the shear wall concrete of the bottom or middle layer is seriously insufficient after construction reaches a certain number of floors. If all the shear wall structures that do not meet the strength requirements are demolished, it will bring immeasurable losses to the economy of the project and the reputation of related units. If the reinforcement technology, whether carbon fiber or bonded steel technology, is not only relatively cumbersome, but also requires relatively high monitoring and construction quality monitoring; it will also affect real estate sales and bring ...

AI Technical Summary

Problems solved by technology

Ordinary reinforcements, including carbon fiber and bonded steel, are easy to leave traces, and the subsequent decoration of ordinary people cannot destroy the reinforcement. After the house is handed over, it is easy to cause suspicion and disputes among ordinary people.

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