Assembly type double-sleeve self-resetting energy dissipation steel support with SMA cable

A double-sleeved, assembled technology, applied in the direction of protective buildings/shelters, building types, buildings, etc., can solve the problems of unstable self-resetting performance, complicated and difficult installation procedures, and low material utilization efficiency, and achieve good results. Self-resetting performance, stable self-resetting performance, and effect of improving support self-resetting performance

Pending Publication Date: 2022-02-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, scholars at home and abroad have proposed many self-resetting energy-dissipating supports. In order to achieve better energy-dissipating performance, these structures often need to add complex energy-dissipating systems to the original supports, which makes the installation process of the entire structure more complicated and difficult. , so that many of the new structures proposed above cannot be widely used; at the same time, when some researchers use shape memory alloy (Shape Memory Alloy, referred to as SMA) rods or wires as energy-dissipating components, due to the low material utilization efficiency , resulting in higher actual cost and unstable self-resetting performance

Method used

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  • Assembly type double-sleeve self-resetting energy dissipation steel support with SMA cable
  • Assembly type double-sleeve self-resetting energy dissipation steel support with SMA cable
  • Assembly type double-sleeve self-resetting energy dissipation steel support with SMA cable

Examples

Experimental program
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Effect test

Embodiment 1

[0032] An assembled self-resetting energy-consuming steel support with SMA cable double sleeves is characterized in that it includes an outer sleeve 1, an inner sleeve 2, an outer sleeve end plate 3, an inner sleeve end plate 4, an end plate 110, and an end plate II12, and several SMA cords9.

[0033] The outer sleeve 1 is a hollow sleeve with openings at both ends.

[0034] The inner casing 2 and the outer casing end plate 3 respectively penetrate into the hollow inner cavity of the outer casing 1 from both ends of the outer casing 1 . Wherein, an end plate II12 is provided on the side where the inner sleeve 2 penetrates, and an end plate I10 is provided on the side where the end plate 3 of the outer sleeve penetrates.

[0035] The end plate I10 has a strip-shaped hole I1001 passing through the two plate surfaces. One end of the outer casing end plate 3 passes through the outer casing 1 through the strip hole I1001 and is connected with the outer casing 1 . The other end o...

Embodiment 2

[0040] The main structure of this embodiment is the same as that of Embodiment 1, further, the outer casing 1 and the inner casing 2 are both rectangular casings.

Embodiment 3

[0042] The main structure of this embodiment is the same as in Embodiment 1 or 2. Further, the inner side of the end of the outer casing 1 is partially grooved to form a chute 101 for the outer casing end plate 3 to extend into, and to form a preliminary shape for the outer casing end plate 3. constraint. That is, the two opposite inner side walls of the outer sleeve 1 have slide grooves 101 for guiding and limiting. The two sides of the part where the outer sleeve end plate 3 penetrates into the outer sleeve 1 are respectively located in the two slide grooves 101 , so that the outer sleeve end plate 3 can only slide along the centerline of the outer sleeve 1 in the longitudinal direction. The axial movement of the outer casing end plate 3 is restricted by the high-strength bolt I5, so that the outer casing end plate 3 and the outer casing 1 are integrated, and this process realizes assembly; the hollow hole of the inner casing 2 can be used for the matching installation of th...

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Abstract

The invention discloses an assembly type SMA self-resetting energy dissipation steel support which fully utilizes the hyperelasticity characteristic of an SMA material, and in the pulling and pressing reciprocating motion process of the support, a sleeve generates relative motion, so that an SMA cable is always kept to be pulled, the SMA cable continuously provides resistance rigidity for the support, and residual deformation is not generated after the support is unloaded; meanwhile, pre-tightening force is applied to the high-strength bolts, so that friction force generated by the friction surface is increased, and the energy dissipation capacity of the supporting friction energy dissipation system is further improved; the supporting structure is simple in assembling procedure, full-assembly installation can be achieved, the supporting installation and replacement efficiency is improved, and the supporting structure has stable lateral stiffness resistance and good energy dissipation capacity, is suitable for being used as a main lateral force resistance and energy dissipation component of an anti-seismic structure and has wide engineering application prospects in earthquake-prone areas; and meanwhile, the support can be rapidly installed and replaced, has the potential of integration of production, assembly and installation industries, and also has wide prospects in the field of green building assembly.

Description

technical field [0001] The invention is designed in the field of engineering structures, especially self-resetting energy-dissipating supports. Background technique [0002] Today, earthquakes are still one of the most frequent natural disasters that cause human casualties. At the same time, human research on the concept of earthquake resistance is becoming more and more mature. The ductile anti-seismic design refers to the use of reasonable structural design to cause large plastic deformation in the non-core area of ​​the building to dissipate the main earthquake energy. For example, "strong nodes, weak members", and "strong columns and weak beams" all belong to the concept of ductile anti-seismic design category. Through the plastic energy dissipation of specific parts, the ductile anti-seismic protection makes the main force-bearing parts of the building structure less involved in dissipating earthquake energy and is protected, thus ensuring that the building will not co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021E04B1/98
Inventor 石宇冉晓伟周绪红柯珂
Owner CHONGQING UNIV
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