Shuttle-shaped constraining type buckling-restrained brace

Abstract

The invention relates to a shuttle-shaped constraining type buckling-restrained brace, and belongs to the technical field of structural engineering. The shuttle-shaped constraining type buckling-restrained brace is composed of a cross core component and a peripheral restraining component. The cross core component is formed by welding three flat steel plates, and hard rubber is pasted on the surface of the cross core component. The peripheral restraining component is composed of a restraining steel pipe with concrete inside, two bent square steel pipes with concrete inside and connection steel plates. A circular steel pipe or a square steel pipe can serve as the restraining steel pipe, and concrete is poured into the restraining steel pipe. Concrete is poured into the two bent square pipes which are placed in symmetrical positions on the two sides of the restraining steel pipe. The ends of the peripheral restraining component are close to the restraining steel pipe, and the middle of the peripheral restraining component is the farthest away from the restraining steel pipe. The bent square pipes are each formed by welding and connecting two straight square steel pipes. According to the shuttle-shaped constraining type buckling-restrained brace, when the peripheral component bears the core squeezing pressure, the bending moment of the middle section of the component is large, the bending moment of the section of the end of the component is small, and the shuttle-shaped constraining type buckling-restrained brace is suitable for being used as the super tonnage buckling-restrained brace striding over multiple floors in a high-rise structure.

Description

technical field [0001] The invention relates to a fusiform constrained anti-buckling support member, which belongs to the technical field of structural engineering. Background technique [0002] Since the Hanshin Earthquake in Japan and the Northridge Earthquake in the United States, buckling-resistant bracing members have gradually been applied in some large-scale building structures due to their excellent energy dissipation and shock absorption performance, and have been greatly promoted in some developed countries. The traditional buckling-resistant bracing member consists of two parts: the inner core member and the peripheral restraint member. Under the action of a small earthquake, the inner core member of the buckling-resistant bracing member remains elastic and is used as a lateral force-resistant member of the main structure; In this case, the core member of the anti-buckling support enters yield first, which plays a role in protecting the main frame, and at the same...

AI Technical Summary

Problems solved by technology

As a result, the following disadvantages arise: (1) Excessively large constrained section leads to serious waste of materials; (2) The large volume of concrete in the constrained member leads to excessive self-weight of the member, which makes it difficult for the overall transportation of the buckling-resistant braced member; (3) Excessively large component sizes may occupy too much building space, and exposed components may affect architectural effects

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