Fabricated replaceable two-stage buckling-restrained energy dissipation supporting component

Abstract

The invention discloses a fabricated replaceable two-stage buckling-restrained energy dissipation supporting component. The fabricated replaceable two-stage buckling-restrained energy dissipation supporting component comprises a two-stage buckling-restrained energy dissipation structure; the first-stage buckling-restrained energy dissipation structure comprises an inner square steel tube, a plurality of first-stage oval steel tubes and a core material steel plate; the second-stage buckling-restrained energy dissipation structure comprises an outer square steel tube, a plurality of second-stageoval steel tubes and a piston steel tube; and the inner square steel tube is sleeved with the outer square steel tube, the inner square steel tube divides the interior of the outer square steel tubeinto an upper cavity and a lower cavity, the second-stage oval steel tubes are mounted in the upper cavity and the lower cavity correspondingly, and fixing holes are formed in the sides, fixedly connected with the outer square steel tube, of the second-stage oval steel tubes. Good hysteretic energy dissipation performance of steel due to bending and pulling is reasonably utilized, the effect of two times of energy dissipation is achieved, the effect of a damper can be achieved twice, and the defect that the rigidity is reduced too fast in the later period of one-time buckling energy dissipation can be effectively overcome through superposition of the rigidity obtained after two times of buckling.

Description

technical field [0001] The invention relates to a multi-level energy dissipation support in a building structure and a manufacturing method thereof, in particular to a prefabricated replaceable two-level anti-buckling energy dissipation support member. Background technique [0002] In the design of building structure or seismic strengthening transformation, bracing is a kind of component that can effectively improve the lateral stiffness of the structure, while ordinary steel bracing has the problem of buckling under compression. Aiming at the problem of buckling under compression existing in traditional ordinary steel bracing, a new type of bracing form, anti-buckling bracing, has emerged. However, the stiffness of this kind of anti-buckling bracing decreases a lot when yielding, which causes the building structure to produce excessive displacement, which causes the structure to cause excessive interstory displacement due to the excessive decrease in stiffness, resulting in...

AI Technical Summary

Problems solved by technology

However, when this kind of anti-buckling brace yields, the rigidity drops more, resulting in excessive displacement of the building structure, causing excessive interstory displacement due to the rapid drop in stiffness of the structure, causing damage to non-structural components or even component damage, which brings great harm to post-earthquake repairs. It is very inconvenient, especially when a large earthquake acts, this damage is obvious

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