Composite friction energy dissipation variable tension TiNi alloy wire self-resetting damper

A technology of frictional energy consumption and alloy wire, which is applied in the direction of building components, earthquake resistance, building types, etc., can solve the problems of not being able to adjust the energy consumption capacity and self-resetting capacity of the damper in real time, and achieve the effect of preventing damage and reducing friction

Active Publication Date: 2022-02-01
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]Most of the self-resetting dampers with shape memory alloys involved in energy dissipation currently used cannot adjust the energy dissipation capacity and self-resetting ability of the damper in real time according to the response of the structure, so it is necessary to Invented a new type of self-resetting damper, under the action of piezoelectric materials, it can adjust the energy consumption and self-resetting ability of the damper in real time according to the response of the structure, and the energy consumption and self-resetting ability of the damper can meet the requirements of the building structure , to meet people's requirements for building comfort and safety under the action of external loads such as wind and earthquakes

Method used

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  • Composite friction energy dissipation variable tension TiNi alloy wire self-resetting damper
  • Composite friction energy dissipation variable tension TiNi alloy wire self-resetting damper
  • Composite friction energy dissipation variable tension TiNi alloy wire self-resetting damper

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Effect test

Embodiment 1

[0018] Embodiment 1: The present invention is a variable tension TiNi alloy wire self-resetting damper with composite frictional energy consumption, including 2 connectors 1, 2 end plates 2, restraining cylinder 3, 2 sliding rods 4, 4 pieces of friction Plate 5, 2 sliders 6, 4 friction blocks 7, 4 bolts 8, 2 piezoelectric ceramic drivers 9, 4 prestressed steel wires 10, 8 anchor bolts 11, 2 limit blocks, 6 groups of TiNi Alloy wire 14, 16 anchoring devices 16, 2 sets of ultra-high molecular weight polyethylene fibers 17; the main structure of the damper is a symmetrical structure up and down.

Embodiment 2

[0019] Embodiment 2: In this embodiment, multiple groups of TiNi alloy wires 14 and ultra-high molecular weight polyethylene fibers 17 pass through the connection holes and anchor holes and are fastened on both sides of the restraint cylinder 3 by the anchor device 16. Because the connection holes and the restraint cylinder are anchored There is a certain dislocation of the holes, so a flexible "bowstring" system will be formed. When vibration occurs, the movement of the up and down sliding rods to the left or right will cause the TiNi alloy wire to be pulled and consume energy. At the same time, the left and right movement of the upper and lower sliding rods will drive the friction steel plate to move and generate frictional energy consumption with the friction block. The friction force between the friction steel plate and the friction block can be adjusted by bolts.

Embodiment 3

[0020] Embodiment 3: Driven by the right connecting piece 1´, the upper and lower sliding rods can slide in the restraint cylinder 3, but at the same time, the displacement is limited by the limit block 12, and the limited displacement is equal to the "bowstring" of the TiNi alloy wire in the restraint cylinder 3 Maximum displacement; the anchor hole 31 of the constraint cylinder 3 and the connecting hole 62 of the slider and the block are rounded to reduce the friction between the TiNi alloy wire 14 and the ultra-high molecular weight polyethylene fiber 17 and the hole wall, prolonging the service life of the damper; The TiNi alloy wire 14 is a superelastic alloy wire in an austenite state at room temperature.

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Abstract

The invention discloses a composite friction energy dissipation variable tension TiNi alloy wire self-resetting damper, a left connecting piece (1) and a left end plate (2) are welded and then connected with a constraint cylinder (3) into a whole, and a bolt (8) penetrates through a bolt hole (32) and is temporarily connected with a bolt extrusion hole (71) in a friction block (7); an upper sliding rod (4) and a lower sliding rod (41) are connected through a check block (13), then the two sides of the upper sliding rod (4) and the two sides of the lower sliding rod (41) are connected with friction steel plates (5), a first piezoelectric ceramic driver (9), a left sliding block (6), a second piezoelectric ceramic driver (91) and a right sliding block (61) are symmetrically arranged on the two sides of the fixed check block (13), the left sliding block and the right sliding block can slide in sliding grooves (42) of the upper sliding rod and the lower sliding rod and are in clearance fit with a left end plate and a right end plate, and baffles (15) are connected to the two sides of the sliding blocks. A prestressed steel wire (10) penetrates through baffles (15) to connect the left sliding block (6) with the right sliding block (61) through an anchor bolt (11), and a limiting block (12) penetrates through a limiting hole (33) and then is connected with the upper sliding rod (4).

Description

technical field [0001] The invention relates to the field of energy consumption and vibration reduction control in civil engineering, in particular to a piezoelectric damper control technology with energy consumption and self-resetting functions. Background technique [0002] With the development of urban construction, high-rise super high-rise buildings are gradually popularized, and people's requirements for the comfort and safety of high-rise super high-rise buildings are gradually increasing. Ordinary seismic isolation measures have limited wind resistance and seismic isolation effects on high-rise super high-rise buildings, so it is necessary to take appropriate vibration reduction methods in high-rise buildings to reduce the impact of external loads on the building structure. The semi-active control damper can adjust the damping force in real time according to the response of the building structure and has good energy consumption and self-resetting ability, which can r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02E04H9/14
CPCE04B1/98E04H9/021E04H9/0237E04H9/14
Inventor 何晴光李晓尧孙金榜张释佺安天伦
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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