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A two-stage friction damper

A friction damper and one-stage technology, applied in the field of two-stage friction damper, can solve problems such as single sliding force, inability to quickly assemble, and failure to achieve frictional energy consumption, so as to improve the ability of frictional energy consumption, simple assembly, The effect of convenient processing

Active Publication Date: 2022-07-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a two-stage friction damper to solve the problems of single sliding force in the traditional friction damper, which cannot play the role of frictional energy consumption under the action of small and medium earthquakes or wind loads, and cannot be assembled quickly.

Method used

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  • A two-stage friction damper
  • A two-stage friction damper
  • A two-stage friction damper

Examples

Experimental program
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Effect test

Embodiment 1

[0042] see Figure 1-3 , this embodiment provides a two-stage friction damper, comprising two outer cover sub-plates 1, four long friction plates 2, two short friction plates 3, a first slotted main plate 4, and a second slotted main plate 5. Two inner high-strength bolts 6 and six outer high-strength bolts 7.

[0043] Specifically, see Figure 4, there is a row of outer circular holes 101 on both sides of the outer cover sub-plate 1. In this embodiment, each row of outer circular holes 101 is three circular through holes, and the two rows of outer circular holes 101 are parallel to each other. A row of inner circular holes 102 is defined in the middle of 101 . In this embodiment, a row of inner circular holes 102 is two circular through holes.

[0044] see Figure 5 , figure 1 , the long friction plate 2 is provided with a row of first circular holes 201, the diameter of the first circular holes 201 is the same as the diameter of the outer circular holes 101, and the firs...

Embodiment 2

[0058] see Figure 10-11 , this embodiment provides a two-stage friction damper. The only difference between this embodiment and Embodiment 1 is that this embodiment combines the two waist holes of the first slotted main board in Embodiment 1 into one waist hole 401 , the length of the waist hole 401 in this embodiment is equal to the length of the line connecting the farthest points of the two waist holes in the first embodiment.

[0059] It is easy to understand that, in other embodiments, the number of waist holes 401 may also be three or more.

Embodiment 3

[0061] see Figure 12 , this embodiment provides a two-stage friction damper. The only difference between this embodiment and Embodiment 1 is that the first slotted main plate 4 in this embodiment has two protruding teeth. Correspondingly, the second slotted main plate has two protruding teeth. 5 has two notches, and correspondingly, the short friction plate 3 has four. The two protruding teeth are inserted into the two notches, and the four short friction plates 3 are located on both sides of the two protruding teeth.

[0062] It is easy to understand that, in other embodiments, the first slotted main plate 4 may also have three or more protruding teeth, and correspondingly, the second slotted main plate 5 may have three or more notches. Specifically, the number of notches is the same as the number of protruding teeth, and the number of short friction plates 3 is equal to twice the number of protruding teeth of the first slotted main plate 4 .

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Abstract

The invention discloses a two-stage friction damper, comprising an outer cover auxiliary plate, a long friction plate, a short friction plate, a first slotted main plate, a second slotted main plate, inner high-strength bolts and outer high-strength bolts. The first slotted main plate and the second slotted main plate are in the same plane, and the outer cover sub-plate, the long friction plate and the short friction plate are connected by inner high-strength bolts and outer high-strength bolts to form a connection between the first slotted main plate and the second slotted main plate. Slotted motherboard with symmetrical five-layer board structure. The two-stage friction damper of the present invention can function under both small earthquakes and large earthquakes. When a small earthquake acts, the friction damper slips on the first-order level. When a large earthquake acts or the interlayer displacement is about to exceed the interlayer elastic deformation range, the friction damper moves on the first and second-order levels to increase the structure of the structure. The damping, limiting the displacement between layers, and improving the ability of frictional energy dissipation, are suitable for engineering.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a two-stage friction damper. Background technique [0002] Earthquake is a natural phenomenon of rapid release of energy from the earth's crust. Its suddenness is very strong, and every earthquake will bring losses to people's property and life safety, especially after a major earthquake, it has brought great trauma to human beings. Its catastrophic can be said to be devastating. The traditional seismic design method of building structure mainly resists seismic force by increasing the seismic performance of the engineering structure itself, that is, dissipating the seismic action through the energy stored in the structure itself, without controlling the fundamental energy consumption and conversion mechanism. It is not possible to actively choose a reasonable energy consumption path. [0003] Energy dissipation and shock absorption technology is to add energy dissipat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021E04B1/98
Inventor 刘烨刘文龙卢宇杰
Owner SICHUAN UNIV