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

Abstract

The invention discloses a buckling induction brace with lengthened pineapple-shaped induction units at the ends. The buckling induction brace comprises a restrained section and energy consumption sections and further comprises a brace straight section. The energy consumption sections are arranged at the two ends of the brace straight section. Each energy consumption section comprises at least one lengthened pineapple-shaped induction unit in the axial direction of the brace. Each lengthened pineapple-shaped induction unit is a space body, with the section of a regular polygon, formed by arranging m lengthened pineapple-shaped subunits sequentially in the circumferential direction. Each lengthened pineapple-shaped subunit is a space body formed by folding four triangular plates and two trapezoidal plates which are in the same plane. The buckling induction brace maintains elasticity under the action of a small earthquake and enters a yield stage under the action of a medium earthquake or a large earthquake, and the good hysteretic energy consumption performance of the buckling induction brace can also achieves an effect of a damper. Compared with a traditional buckling restrained brace, the buckling induction brace reduces the workload of site construction work, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of building structures, in particular to a buckling-inducing support with an extended 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 compressio...

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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