Parallel multi-casing double-yield-point buckling-restrained brace

Abstract

The invention discloses a parallel multi-casing double-yield-point buckling-restraint support, which comprises: a concrete core area as a buckling-restraining core unit of the buckle-restraint support; a first-stage energy-dissipating soft steel pipe, at least one end of which is equipped with a limit pin, and Concrete is poured to form the concrete core area; the secondary energy-dissipating soft steel pipe has a first limit hole on the pipe wall at least one end; the restraint steel pipe has a second limit hole on the pipe wall at least one end; the connecting sleeve, the sleeve It is provided at least one end outside the constraining steel pipe, and a third limit hole is opened on the pipe wall of the connecting sleeve; the limit pin is embedded in the first limit hole, the second limit hole and the third limit hole at the same time, The cross-sectional size of the limiting pin is smaller than that of the first limiting hole, and the size of the first limiting hole is smaller than that of the second limiting hole. 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 parallel multi-casing double-yield-point buckling restraint support. Background technique [0002] General buckling-constrained braces provide lateral stiffness for the building structure under normal use conditions and small earthquakes, and play the role of ordinary supports; under large earthquakes, buckling-constrained braces can dissipate earthquakes through repeated tension and compression hysteresis input energy. 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 ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the object of the present invention is to provide a buckling restrained support, specifically a buckling restrained support with multiple casings in parallel, so as to solve one or more problems existing in the existing buckling restrained supports, especially Can meet the requirements of large tonnage load

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