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

A variable-length, pineapple technology, applied in building types, buildings, building components, etc., can solve the problems of low design flexibility, unfavorable plastic hinges, etc., to simplify the manufacturing process, prevent overall buckling, and improve energy dissipation capacity. Effect

Active Publication Date: 2018-09-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • A buckling-inducing brace with variable-length pineapple-shaped inducing units at the end
  • A buckling-inducing brace with variable-length pineapple-shaped inducing units at the end
  • A buckling-inducing brace with variable-length pineapple-shaped inducing units at the end

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Experimental program
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Effect test

Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] figure 1 It is a structural schematic diagram of a buckling-induced brace with variable-length pineapple-shaped induction elements at the end, which is composed of an end-restrained section 1, an energy-dissipating section 2, and a straight support section 3. The end-restrained section 1 is fixed at the beam-column node and the Between the sections 2, the energy dissipation section 2 is fixed at both ends of the supporting straight section 3.

[0028] Such as figure 2 As shown, the end restraint section 1 is composed of a quadrilateral steel plate 4, a T-shaped short steel beam 5, and a connecting plate 6 reserved for components such as beams and columns. The quadrilateral steel plate 4 is welded to the end of the energy dissipation section 2. Two T-shaped short steel The beam 5 is welded to the quadrilateral steel plate 4, and the quadrilateral steel plate 4...

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Abstract

The invention discloses a buckling induced brace provided with length-variable pineapple type induction units at the end parts. The brace comprises a restraint section and an energy dissipation section and further comprises a flat brace section, wherein the energy dissipation section comprises at least one length-variable pineapple type induction unit in the axis direction of the brace; each length-variable pineapple type induction unit is a space body which is formed by arranging m length-variable pineapple type subunits in the annular direction sequentially and has a section of a 2m-regular polygon, and each length-variable pineapple type subunit is a space body formed by folding six isosceles triangle boards in the same plane. With the adoption of the buckling induced brace provided with the length-variable pineapple type induction units at the end parts, the buckling induced brace keeps elasticity under the action of small earthquakes and enters a yield stage under the action of medium earthquakes or large earthquakes, and the buckling induced brace can realize the effect of a damper by the aid of good hysteretic and energy dissipation performance. Compared with a conventional buckling restrained brace, the buckling induced brace has the advantages that workload for site operation is reduced in the aspect of a manufacturing process and energy conservation and environmental protection are realized.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98
CPCE04H9/021
Inventor 蔡建国冯健汪子哲周宇航柳杨青马瑞君
Owner SOUTHEAST UNIV
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