Self-resetting friction energy dissipation steel frame joint based on shape memory alloy

A technology of memory alloy and frictional energy consumption, which is applied in building components, building structures, and earthquake resistance, can solve the problems of difficult post-earthquake repairs and threats to structural safety, and achieves good application prospects, convenient use, and solutions to residual deformation. Effect

Active Publication Date: 2020-12-18
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

On the one hand, the residual deformation in the node area will threaten the safety of the structure, on the other hand, it will bring great difficulties to the post-earthquake repair of the structure, and cause huge economic losses and time costs

Method used

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  • Self-resetting friction energy dissipation steel frame joint based on shape memory alloy
  • Self-resetting friction energy dissipation steel frame joint based on shape memory alloy
  • Self-resetting friction energy dissipation steel frame joint based on shape memory alloy

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments thereof.

[0046] A self-resetting friction energy-dissipating steel frame node based on shape memory alloys, including H-shaped steel columns 1, upper cover plates 5, lower cover plates 10, H-shaped steel beams 11, steel sleeve plates 12, shape memory alloy ribs 18, friction Energy dissipation system; there is a gap between the H-shaped steel column 1 and the H-shaped steel beam 11; both sides of the beam-column node area formed by the H-shaped steel column 1 and the H-shaped steel beam 11 are welded with steel sleeve plates 12, and the steel sleeve plates 12 The middle part of the side near the H-shaped steel column 1 is provided with a steel sleeve plate hole 3, and the steel sleeve plate hole 3 is elliptical; the middle part of the H-shaped steel beam web on the side of the H-shaped steel beam 11 close to the H-shaped steel column 1 Be...

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Abstract

The invention relates to a self-resetting friction energy dissipation steel frame joint based on shape memory alloy. A gap is reserved between an H-shaped steel column and an H-shaped steel beam; steel sleeve plates are welded to the two sides of a beam-column joint area formed by the H-shaped steel column and the H-shaped steel beam correspondingly, steel sleeve plate hole grooves are formed in the middle portions, close to the side of the H-shaped steel column, of the steel sleeve plates, and the steel sleeve plate hole grooves are oval; a beam circular hole is formed in the middle of an H-shaped steel beam web, close to the side of the H-shaped steel column, of the H-shaped steel beam, a third shape memory alloy rib hole channel is formed in an upper flange of the H-shaped steel beam, and a fourth shape memory alloy rib hole channel is formed in a lower flange of the H-shaped steel beam; reinforcing plates are welded to the two sides of the beam circular hole, the height of the reinforcing plates is equal to that of the web of the H-shaped steel beam, and reinforcing plate round holes are formed in the reinforcing plates and correspond to the beam circular hole; and according tothe joint, the problems of residual deformation, brittle failure, insufficient energy consumption and the like of the steel frame under the earthquake action are effectively solved.

Description

technical field [0001] The invention relates to a self-resetting friction energy-dissipating steel frame node based on a shape memory alloy, which belongs to the field of engineering shock absorption equipment. Background technique [0002] The steel frame structure is one of the main structural forms of the steel structure. When subjected to a strong earthquake, the joint area is often the first to suffer low-cycle fatigue damage and produce different degrees of residual deformation. It is the weakest part of the steel frame structure. On the one hand, the residual deformation in the node area will threaten the safety of the structure, on the other hand, it will bring great difficulties to the post-earthquake repair of the structure, and cause huge economic losses and time costs. [0003] In order to solve the problem of excessive residual deformation in the joint area, some joint forms with self-resetting function have begun to appear in recent years. This type of node ge...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02E04B1/24E04B1/58
CPCE04B1/2403E04B1/98E04B2001/2406E04H9/021E04H9/024
Inventor 池沛晁贝贝方必纪吕志鹏田牛高明汤蓉
Owner YANGZHOU UNIV
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