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Variable-friction damper

A damper and variable friction technology, applied in the field of dampers and variable friction dampers, can solve the problems of large changes in stiffness and unfavorable seismic resistance of building structures, and achieve the effect of avoiding collision, simple structure and large adjustment area.

Inactive Publication Date: 2013-05-08
CABR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3) The existing friction damper often gives the building structure a large additional initial stiffness. When the friction damper does not start to slide, it is equivalent to a rigid support. unfavorable
But this is a kind of thinking of "passively enduring collision". The reinforcement at the local position where the collision may occur can only reduce the damage of the collision part, but the impact of the collision on the overall structure has not been resolved.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0066] like Figure 1 to Figure 7 As shown, the first embodiment is a flat plate variable friction damper, which includes five stacked steel plates, of which the core plate 1 is located in the middle, and two first steel plates are separated on both sides of the core plate 1 2. The second steel plate 3 is located outside the first steel plate 2 .

[0067] like figure 1 , figure 2 and Figure 5 As shown, both sides of the core plate 1 are bonded with a friction material 4, and the friction material 4 is a heavy-duty friction material. One end of the core board 1 has a core board connecting part 11 connected with the building structure, and the fixing part 12 of the core board 1 is connected with the core board connecting part 11, and three rows of fixing holes 15 are arranged on the fixing part 12, and the other parts are core boards. The friction part 13 of the plate 1 is provided with two rows of connecting holes 14 (of course, the friction material 4 also has two rows o...

Embodiment 2

[0073] like Figure 8 to Figure 10 As shown, Embodiment 2 is a hinge point variable friction damper, which includes eight steel plates, such as Figure 8 As shown, among the eight steel plates, the first, third, fifth and seventh steel plates form a group, and the second, fourth, sixth and eighth steel plates form a group. Stacked together, the middle part between the fourth steel plate 100 and the fifth steel plate 101 is a slope contact, that is, a concave-convex surface contact, (same as the slope of Embodiment 1, and will not be repeated here). Friction material 102 is bonded between the remaining two adjacent steel plates. Corresponding connecting holes (not shown in the figure) are opened on the two groups of steel plates and the friction material 102 bonded thereon, and bolts 103 that hinge the eight steel plates together are pierced in the connecting holes. The other ends of the two groups of steel plates are respectively connected to different building components, a...

Embodiment 3

[0077] like Figure 11 and Figure 12 As shown, Embodiment 3 is a circular cross-section support type variable friction damper, which includes a plurality of ring-shaped steel plates that are set together, that is, the inner steel plate 200, the middle steel plate 201 and the outer steel plate 202, the inner steel plate 200 and the middle steel plate 201 The friction material 203 is bonded to the side that is attached to each other. The friction surface is formed between the middle steel plate 201 and the friction material 203, and it slides relative to each other in the working state. Contact (the structure and principle of the concave-convex surface are the same as those in Embodiment 1, and will not be repeated here). Both ends are in planar contact. Outer steel plate 202, inner steel plate 200 and the friction material 203 bonded thereon are provided with multiple sets of corresponding connecting holes (not shown in the figure), and the middle steel plate 201 is provided...

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Abstract

The invention discloses a variable-friction damper which comprises a plurality of steel plates stacked or sleeved together. The middle portions of at least one pair of adjacent steel plates are in concave-convex surface contact, every two remaining adjacent steel plates are in plane contact, friction materials are adhered between other steel plates, the other surface of each steel plate with one surface being a concave surface or a convex surface is a plane, the steel plates arranged at intervals form a group of steel plate groups, a first steel plate group and the friction materials adhered to the first steel plate group are provided with at least one group of corresponding bolt holes, a second steel plate group and the friction materials adhered to the second steel plate group are provided with strip-shaped sliding grooves corresponding to the bolt holes along the steel plate length direction, and bolts enabling the steel plates and the friction materials to be connected together penetrate into each group of bolt holes respectively. Linear damping is provided in a friction mode by means of changes of positive pressure, and the variable-friction damper has good damping performance.

Description

technical field [0001] The invention relates to a damper, in particular to an anti-seismic variable friction damper, which belongs to the field of energy consumption and shock absorption control of building structures. Background technique [0002] The development and research of energy-dissipating shock-absorbing dampers for building structures has become one of the research hotspots in the world's engineering anti-seismic field. It has been widely proved to be an effective anti-seismic measure by adding dampers in the structure to consume the input energy of the earthquake and protect the safety of the main structural members. At present, dampers mainly include metal dampers, viscous dampers, viscoelastic dampers, and friction dampers. Among them, the friction damper is widely concerned and applied because of its direct principle, simple structure, convenient manufacture and low price. The friction damper is an energy-consuming shock-absorbing device that uses the fricti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
Inventor 薛彦涛李澈
Owner CABR TECH CO LTD
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