Underpinning and strengthening structure of existing brick-concrete structure with seismic isolation bearing and its construction method

Abstract

The invention discloses an underpinning and reinforcing structure for a seismic isolation bearing of an existing brick-concrete structure. The underpinning and reinforcing structure comprises an enlarged foundation arranged on the original foundation, a lower supporting pier arranged on the upper part of the enlarged foundation, a seismic isolation pad lower embedded board arranged on the upper part of the lower supporting pier, a seismic isolation pad arranged on the upper part of the seismic isolation pad lower embedded board, a seismic isolation pad upper embedded board arranged on the upper part of the seismic isolation pad, double supporting beams arranged on the upper part of the seismic isolation pad upper embedded board and a seismic isolation board arranged on the upper parts of the double supporting beams; pin keys are further arranged inside the double supporting beams; and the double supporting beams, the pin keys and the seismic isolation board are of an integrated type poured and molded structure. The invention further provides a construction method for the underpinning and reinforcing structure for the seismic isolation bearing of the existing brick-concrete structure. In this way, the underpinning and reinforcing structure is stable in structure, is high in safety, and has relatively good seismic resistance; besides, the mounting and constructing are relatively convenient, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of anti-seismic transformation of building structures, in particular to an underpinning and strengthening structure of an existing brick-concrete structure seismic isolation bearing and a construction method thereof. Background technique [0002] When the seismic performance of an existing brick-concrete structure building does not meet the current code and needs to be reinforced, two methods are often used to deal with it: [0003] a. Improve the seismic performance of the structure through seismic reinforcement of the upper structure. [0004] This method involves a wide range of construction for the seismic reinforcement of the upper structure. Generally, the entire building should be reinforced. The construction period is long, and the original decorative surface needs to be destroyed and then re-decorated after reinforcement. The cost is high. The usable area is reduced. [0005] b. Add a seismic isol...

AI Technical Summary

Problems solved by technology

[0008] 1. After the construction of the upper and lower buttresses is completed, it is inconvenient to install the vibration isolation pad;

[0009] 2. The connection between the seismic isolation pad and the concrete pier is not tight, which makes the structure uneven and affects the safety of the structure;

[0010] 3. The double joist and the vibration isolation plate cannot be poured at one time, which affects the pouring quality and wastes labor

Images