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Assembly, energy consumption and self-resetting method for shape memory alloy spring buckling restrained brace

A memory alloy spring, anti-buckling support technology, applied in the field of building shock absorption, can solve the problems of high replacement and maintenance costs, weak inner core support ability, no self-reset ability, etc., and achieves convenient and quick disassembly, easy maintenance, Efficient energy consumption effect

Active Publication Date: 2019-02-01
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing support mainly relies on the deformation of the inner core to consume energy, which leads to the weak supporting capacity of the inner core in earthquakes, high replacement and maintenance costs, and no self-resetting ability, the present invention proposes the following technical solution: a shape memory alloy spring The assembly method of the anti-buckling support is to cover several shape memory alloy springs on the outer circumference of the round steel pipe, fix the two round steel pipes and the upper steel plate with vertical steel bars, and clamp the two first steel blocks correspondingly between the two On the round steel pipe at the end of the shape memory alloy spring, the second steel block with a cross-shaped long steel groove inner core is correspondingly clamped on the round steel pipe between the two shape memory alloy springs, and the steel plate group and the upper steel plate are used Bolted

Method used

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  • Assembly, energy consumption and self-resetting method for shape memory alloy spring buckling restrained brace
  • Assembly, energy consumption and self-resetting method for shape memory alloy spring buckling restrained brace
  • Assembly, energy consumption and self-resetting method for shape memory alloy spring buckling restrained brace

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: as Picture 1-1 and 1-2 As shown, a shape memory alloy strand shock absorber includes a steel plate, an L-shaped steel plate 1-4, an L-shaped connecting steel plate 1-3, a first limiting plate 1-5, a second limiting plate 1-8, Steel blocks 1-6 with cuboid holes and slots reserved, polytetrafluoroene slide plates and stranded wires 1-7 of shape memory alloy. The steel plate and the L-shaped steel plate 1-4 are connected by the L-shaped connecting steel plate 1-3, and the L-shaped connecting steel plate 1-3 is welded to the L-shaped steel plate 1-4 while being anchored to the upper steel plate 1-1 with bolts and nuts, forming The first steel plate group. One side of the steel blocks 1-6 with cuboid reserved holes and slots is welded with the steel plate, and the other side is welded with the limiting plate, and the corresponding size limiting plate is also inserted in the reserved slot to form the second steel plate group. The installation method of the sh...

Embodiment 2

[0048] Embodiment 2: as diagram 2-1 As shown, an assembled anti-buckling support uses a shape memory alloy material. The shape memory alloy has superelasticity, high damping, corrosion resistance and memory effect, so after the earthquake, the invention can reset itself, because it is assembled Therefore, it is easy to disassemble, easy for daily maintenance and post-earthquake repair. It includes an upper steel plate 2-2 with screw holes, a shape memory alloy spring 2-7, a cross-shaped long steel core with grooves 2-5, a steel plate group with screw holes 2-3, and a circular steel pipe 2- 6. Rectangular steel bar 2-4, bolt 2-1.

[0049] Further, the steel plate group 2-3 with screw holes includes a hollow rectangular body formed by a vertical plate and a bottom plate, the top surface of the vertical plate has screw holes, and the steel plate group 2-3 also includes several small U-shaped steel plate groups 2-3 percent, several small U-shaped steel plates are divided into t...

Embodiment 3

[0059] Embodiment 3: as Figure 3-1 , Figure 3-2 As shown, a ring-shaped shape memory alloy spring omnidirectional shock-isolation support includes a circular outer cylinder, a circular inner cylinder, a limit plate 3-6, an annular shape memory alloy spring 3-3, a rectangular steel plate 3-4, a circular Steel plate 3-5, circular steel plate 3-5 are used as upper connecting steel plate. The lower part of the annular shape memory alloy spring 3-3 is composed of three inner and outer cylinders 3-1. An annular shape memory alloy spring 3-3 is placed between the inner and outer cylinders 3-1, and a limit plate 3-6 is installed above to prevent the inner and outer cylinders 3-1 from breaking away. The surface of the bottom surface of the outer cylinder 3-1 is inlaid with polytetrafluoroethylene slide plates to reduce the coefficient of friction. The upper part of the shock-isolation support is composed of circular steel plates and rectangular steel plates, which are connected by...

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Abstract

The invention discloses an assembly, energy consumption andself-resetting method for a shape memory alloy spring buckling restrained brace, and belongs to the field of construction damping. In order to solve the problems that an inner core has low bracing capacity in an earthquake due to the fact thatan existing brace mainly relies on inner core deformation to consume energy, the replacing and maintaining cost of the brace is high, and the brace has no self-resetting capacity. A plurality of shape memory alloy springs are connected to the outer peripheries of round steel pipes in a coating mode, and thetwo round steel pipes and an upper steel plate are fixedly connected by vertical steel strips; and two first steel blocks are clamped at the positions, on the end portions of the two shape memory alloy springs,on the round steel pipes correspondingly, second steel blocks of cross-shaped long steel strip concave groove inner cores are clampedat the positions,between the two shape memory alloy springs, on the round steel pipes correspondingly,and a steel plate set is connected with the upper steel plate by bolts. The assembly, energy consumption andself-resetting method for the shape memory alloy spring buckling restrained braceis of an assembly type, most parts are connected by bolts, disassembly is convenient and rapid, and routine maintenance and renovation after the earthquakeare easy.

Description

technical field [0001] The invention belongs to the field of building shock absorption, and relates to an assembly, energy consumption and self-resetting method of an anti-buckling support. Background technique [0002] Traditional civil engineering structural supports mainly include: eccentric support, energy-dissipating coupling support, energy-dissipating frame support and other support forms. Most supports mainly consume seismic energy through deformation to reduce the effect of earthquakes. Due to the elastic-plastic properties of structural components, these energy-dissipating supports will inevitably undergo some damage and deformation, which is not conducive to energy dissipation and has an impact on the stability of the building. [0003] The energy-dissipating and shock-absorbing technology is mainly: by adding passive energy-dissipating devices to the original structure, the seismic energy originally consumed by the structural components is consumed, and the defor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 崔迪
Owner DALIAN UNIV
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