A Buckling Induced Brace with Corner Concave Induced Units at the End

Abstract

The invention discloses a buckling induced support with concave-corner type induction units at the end. The buckling induced support includes a bound segment and energy consumption segments and further includes a support flat segment; the energy consumption segments are arranged at the two ends of the support flat segment, each energy consumption segment is formed by at least one concave-corner type induction unit in the axial direction of the support, each concave-corner type induction unit is a space body with the section shaped like an equilateral polygon and is formed by arranging m concave-corner type subunits in the circumferential direction in sequence, and each concave-corner type subunit is a space body formed by mutual collinear folding of two trapezoidal plates and four triangle plates located in the same plane. Under the action of small shock, the buckling induced support keeps elastic, under the action of middle shock or great shock, the buckling induced support enters a yield stage, and the good hysteresis energy-consumption performance makes the support play a role as a damper. Compared with a traditional buckling restrained support, the buckling induced support reduces the workload of field construction work, saves energy and achieves environmental protection.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a buckling-inducing support with corner recessed induction units at the end, which is suitable for steel structures or concrete structures with buckling-constrained supports. Background technique [0002] During the use of steel structures or reinforced concrete structures, ordinary supports will buckle under compression. When the supports buckle under compression, the stiffness and bearing capacity will decrease sharply. Under the action of earthquake or wind, the internal force of the support changes back and forth under the two states of compression and tension. When the support gradually changes from the buckling state to the tension state, the internal force and stiffness of the support are close to zero. Therefore, the hysteretic performance of ordinary supports is poor under repeated loads. In order to solve the problem of buckling under compressi...

AI Technical Summary

Problems solved by technology

On June 1, 2016, the applicant proposed an energy-dissipative buckling-constrained support with symmetrical initial defect units at the end (application number 201610383430.5) and a buckling-controlled support with diamond-shaped energy-dissipating units at the end (application No. 201610380804.8) has a fixed geometric configuration and little design flexibility

Moreover, the structure and plate thickness of the energy-dissipating units in the above-mentioned support at the crease are consistent with those at the non-crease, which is not conducive to the generation of plastic hinges at the crease.

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