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

Abstract

The invention discloses a buckling inducing support with middle sunken type inducing unit at end part thereof, comprising a restriction section and an energy consumption section. The buckling inducing support further comprises a straight support section; the energy consumption section is arranged at both ends of the straight support section and composed of at least one middle sunken type inducing unit along the axial line direction of the support; the middle sunken type inducing unit is a space body with positive m-polygonal section by m middle sunken type subunits orderly along the annular direction; the middle sunken type subunits are the space body formed by folding two trapezoid blocks and four triangular plates on the same one plane in the form of two common lines. The buckling inducing support can keep elasticity under small vibration; the buckling inducing support enters the buckling stage under the medium or big vibration, and the good hysteretic energy consumption performance can play the effect of a damper. Compared with the traditional buckling restriction support, the buckling inducing support reduces the work load of the field construction, saves energy and protects environment.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a buckling-inducing support with a central concave-type inducing unit 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 comp...

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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