Buckling-restrained brace with double yield points in series casing

Abstract

The invention discloses a double-yield-point buckling-constrained support of series sleeve type, which comprises: a concrete core area; a first-level energy-dissipating soft steel pipe and a second-level energy-consuming soft steel pipe, connected in series through a connecting piece, and a first-level energy-consuming soft steel pipe The other end of the steel pipe is installed with a first limit pin, and the other end of the second-level energy-dissipating soft steel pipe is installed with a second limit pin; It is provided with a first limit hole and a second limit hole; the first limit pin and the second limit pin are respectively embedded in the first limit hole and the second limit hole, and the two sides of the first limit pin A first gap δ is formed between the axial direction and the first limiting hole 1 , a second gap δ is formed between the two sides of the second limit pin in the axial direction and the second limit hole 2 , and δ 1 <δ 2 . The buckling-constrained brace of the present invention can exert the energy dissipation performance of the structure in the full earthquake-resistant stage, ensure the safety of the structure, and meanwhile have high load-carrying energy-dissipating intensity, meeting the demand for large-tonnage bearing-carrying energy-consumption.

Description

technical field [0001] The invention relates to the technical field of building components, in particular to a buckling-constrained brace with double yield points in series casing. Background technique [0002] Buckling-restrained bracing has the characteristics of clear shock absorption mechanism, obvious shock absorption effect, safety, reliability, and economical rationality, and can meet the seismic requirements of different structures. The energy-dissipating section of the buckling-restrained support is the main force-bearing unit, generally made of steel with a low yield point. The restraint unit provides a restraint mechanism to prevent the overall instability or local buckling of the energy-dissipating unit when it is subjected to axial compression. Steel pipes can be used Concrete, reinforced concrete jacket, circular or polygonal steel pipes, etc., unbonded materials provide a sliding interface between the energy dissipation unit and the restraint unit, so that the...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the object of the present invention is to provide a buckling-restrained brace, specifically a buckling-restrained brace with double yield points in series casing, so as to solve one or more problems existing in the existing buckling-restrained braces, especially to satisfy large Tonnage Carrying Requirements

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