Anti-collapse reinforcement method for frame-anti-buckling support system

Abstract

The invention discloses an anti-collapse reinforcement method for a frame-anti-buckling support system and relates to the reinforcement method for the frame-anti-buckling support system, which is designed against the problems that the all-steel frame-anti-buckling support system is prone to buckling failure of frame columns under limit cases of rare occurrence earthquakes and further results in continuous collapse of the structure system. The method comprises the following steps: 1) increasing two longitudinal stiffening ribs in a groove of an H-shaped steel frame column between adjacent two frame columns in the all-steel frame-anti-buckling support system to be reinforced, and performing fine melting and through welding on the longitudinal stiffening ribs, flanges of the H-shaped steel frame column and transverse stiffening ribs of beam column nodes to form a whole; 2) processing a steel-restrained member; and 3) assembling and positioning the steel-restrained member on the periphery of the H-shaped steel frame column, and reserving a gap between the steel-restrained member and the H-shaped steel frame column. According to the anti-collapse reinforcement method disclosed by the invention, destability damages of the frame-anti-buckling support system under the limit cases of the rare occurrence earthquakes can be effectively prevented, and the anti-collapse capability is strong. The anti-collapse reinforcement method is used for anti-collapse reinforcement of the frame-anti-buckling support system.

Description

technical field [0001] The invention relates to a method for strengthening a frame-buckling-resistant support system, in particular to a method for strengthening an anti-collapse of an all-steel frame-buckling-resistant support system. Background technique [0002] As a new type of structure, the all-steel frame-buckling-resistant bracing system has been more and more widely used in the field of building structures, especially high-rise buildings, for its good energy dissipation and shock absorption performance and short construction period. application. Relying on the yield energy dissipation of the braced inner core, a properly designed frame-buckling-resistant bracing system has good seismic performance under frequent and rare earthquakes. However, under the limit of rare earthquakes, frame columns, as the main vertical stress members, will inevitably undergo buckling failure, especially in high-rise buildings. This failure mode can easily lead to continuous collapse of ...

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Problems solved by technology

[0004] The present invention aims to solve the problem that the H-shaped cross-section assembled anti-buckling support member in the prior art cannot effectively prevent the buckling instability and damage of the H-shaped steel frame column and cannot provide additional vertical rigidity for the main structure , Prevent the continuous collapse of the structure, and then provide a frame-buckling-resistant bracing system anti-collapse reinforcement method to improve the safety reserve and collapse resistance of the frame-buckling-resistant bracing system

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