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

Abstract

The invention discloses an energy-consuming type buckling induction support with a variable-angle four-fold induction unit at the end. The energy-consuming type buckling induction support includes a restrained section and energy-consuming sections and further includes a supporting straight section, the energy-consuming sections are arranged at the two ends of the supporting straight section, each energy-consuming section is composed of at least one variable-angle four-fold induction unit in the axial direction of the support, and one variable-angle four-fold induction unit is a space body with the regular-polygon-shaped section, wherein the space body is formed by sequentially arranging m same variable-angle four-fold subunits in the ring direction and each variable-angle four-fold subunit is a space body formed by folding four trapezoidal plates in the same plane. Under the effect of a small shock, the energy-consuming type buckling induction support keeps elasticity, under the effects of a moderate or strong shock, the buckling induction support enters a yield stage, and the support has good stagnation and energy-consuming performance and has the effect of a damper. In the preparation, the addition of a sleeve on the outer part of a core energy-consuming member, grouting and other processes are voided, and the preparation is convenient to implement.

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-angle four-fold-type inducing 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 pr...

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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