Aseismic strengthening structure and aseismic strengthening method for reinforced concrete frame

Abstract

The invention discloses an aseismic strengthening structure and an aseismic strengthening method for a reinforced concrete frame. A reinforced concrete column is additionally and closely arranged outside each outer column of the reinforced concrete frame, and a pile foundation is arranged below each reinforced concrete column. The side wall of each reinforced concrete column and the side wall of the corresponding outer column of the reinforced concrete frame are connected through a plurality of metal dampers in uniform intervals from the top, and the bottom of each reinforced concrete column is connected with a bearing platform through a rocking device and four pre-stressed steel bars close to a pin key. By the aseismic strengthening method, the problem that the reinforced concrete frame fails to realize a 'strong column and weak beam' failure mechanism in earthquake is solved; the metal dampers dissipate earthquake energy, cut down earthquake response and is replaceable after the earthquake; by the post-tensioned pre-stressed steel bars, the aseismic strengthening structure is enabled to restore, and quickness in post-seismic recovery of the structure is realized; since the aseismic strengthening method is completely carried out outside buildings, a series of problems caused by indoor construction can be avoided.

Description

technical field [0001] The invention belongs to the field of anti-seismic strengthening technology, and in particular relates to an anti-seismic strengthening structure of a reinforced concrete frame and an anti-seismic strengthening method thereof. Background technique [0002] Reinforced concrete frame structure has been widely used all over the world due to its flexible layout, light weight and low cost. However, the reinforced concrete frame structure also has disadvantages such as a single anti-seismic defense line, low lateral stiffness, and large horizontal displacement under strong earthquakes. In previous earthquakes, it was found that most of the reinforced concrete frame structures that had undergone seismic design failed to realize the expected failure mechanism of "strong column and weak beam". Bottom or middle floors collapse. According to the results of the 2008 Wenchuan Earthquake Damage Survey, the collapse rate of reinforced concrete frame structures in B...

AI Technical Summary

Problems solved by technology

The anti-seismic reinforced structure solves the problem of the failure mechanism of the reinforced concrete frame in the earthquake that failed to achieve the expected "strong column weak beam"

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