A buckling-inducing brace with oblique pineapple-shaped inducing units at the end

Abstract

The invention discloses a buckling induction support with pineapple type induction units at ends. The buckling induction support comprises constraint sections, energy dissipation sections and a support straight section, wherein the energy dissipation sections are arranged at two ends of the support straight section, each energy dissipation section comprises at least one oblique pineapple type induction unit arranged along the axial direction of the support, each oblique pineapple type induction unit is a spatial body is formed by m oblique pineapple type subunits sequentially arranged along an oblique direction, and the section of the spatial body is a spiral line; each oblique pineapple type subunit is a spatial body formed by folding six isosceles triangle boards in the same plane. The buckling induction support has the advantages that the buckling induction support keeps elasticity under a small seism effect; the buckling induction support enters a yield stage under a middle seism effect or a large seism effect, and the good hysteretic energy dissipation performance of the buckling induction support allows the buckling induction support to have the effect of a damper; compared with a traditional buckling restrained brace, the buckling induction support is capable of reducing the workload of on-site construction, capable of saving energy and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a buckling-inducing support with an oblique pineapple-shaped 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...

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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