An energy-dissipative buckling-inducing brace with variable-length four-fold-type inducing units at the end

Abstract

The invention discloses an energy consumption type buckling induction support with the ends provided with changeable-length four-fold type induction units. The energy consumption type buckling induction support comprises constraint sections, energy consumption sections and a supporting straight section. The energy consumption sections are arranged at the two ends of the supporting straight section and each composed of at least one changeable-length four-fold type induction unit in the axial direction of the support. Each changeable-length four-fold type induction unit is a space body formed by sequentially arranging m identical changeable-length four-fold type sub units in the circumferential direction, and the section of the space body is a polygon. Each changeable-length four-fold type sub unit is a space body formed by folding four trapezoidal plates in the same plane. The energy consumption type buckling induction support keeps elasticity under the effect of a small earthquake and enters a yielding stage under the effect of a medium earthquake or a large earthquake, and the effect of a damper can be achieved by means of the good hysteretic energy consumption performance of the support; and compared with traditional buckling constraint supports, by adoption of the support, the workload of site construction operation is decreased, energy is saved, and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to an energy-dissipating buckling-inducing support with variable-length four-fold-type inducing units at the end, which is suitable for steel structures or concrete structures with buckling-inducing 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 prob...

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 geometry 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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