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Soft steel shearing lag return damper

A damper and hysteresis technology, applied to building components, earthquake resistance, etc., can solve problems such as high maintenance costs, and achieve the effects of small space occupation, avoiding local buckling, and simple structure

Inactive Publication Date: 2009-04-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is a problem of high maintenance cost

Method used

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  • Soft steel shearing lag return damper
  • Soft steel shearing lag return damper
  • Soft steel shearing lag return damper

Examples

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Embodiment Construction

[0014] The content of the present invention is described below in conjunction with embodiment. Such as figure 1 Shown, is the main part of the mild steel shear hysteretic damper of the present invention, namely image 3 with Figure 4 Parts shown in shaded.

[0015] The damper of the present invention comprises: a rigid connecting plate 1 , a hysteretic energy dissipation web 2 , a transverse stiffener 3 , a flange 4 and a longitudinal stiffener 5 . Among them, the hysteretic energy-dissipating web 2 is the main energy-dissipating plate, and the rigid connecting plate 1 and the flange 4 are welded around it. When there are reliable edge constraints around the hysteretic energy dissipation web 2 (such as Figure 4 example shown), such rigid connecting plates 1 and flanges 4 can be omitted. The transverse stiffener 3 and the longitudinal stiffener 5 can be welded on one side or both sides of the hysteretic energy dissipation web 2 . When the softness ratio parameters of th...

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Abstract

The invention relates to a shear hysteretic damper, which comprises an upper rigid connecting plate and a lower rigid connecting plate which are connected with a building structure, a hysteretic energy-consuming web plate, and a flange plate, wherein the rigid connecting plates and the flange plate are fixedly connected to the hysteretic energy-consuming web plate. At least one side of the hysteretic energy-consuming web plate is provided with transverse stiffening ribs or / and longitudinal stiffening ribs. The flexibility-fineness ratio parameter of the hysteretic energy-consuming web plate is between 0.2 and 0.5, the plate thickness ratio of the flange plate to the web plate is not less than 4, the rigidness ratio of the stiffening ribs is not less than 3.0, and the shape factor is between 0.5 and 1.5. The hysteretic energy-consuming web plate is made of rolled steel the yield strength of which is not more than 235MPa, the flange plate and the rigid connecting plates are made of the rolled steel the yield strength of which is not less than 235MPa, and the stiffening ribs are made of the rolled steel the yield strength of which is not less than 235MPa. The shear hysteretic damper has the advantages of simple structure, stable performance, low manufacture and maintenance cost, small space occupation ratio, easy space distribution, replacement after an earthquake and the like.

Description

technical field [0001] The invention belongs to the field of anti-seismic and shock absorption of civil engineering, and relates to an earthquake damage control device installed in buildings and bridge structures in civil engineering, so as to improve the anti-seismic level of structures under strong earthquakes and ensure structural safety. Background technique [0002] As a kind of passive control device, metal hysteretic energy-dissipating damper has been widely used in the vibration control of buildings and bridge structures. Its working principle is: in the event of an earthquake or wind vibration, the plastic yield of the steel produces hysteretic deformation and dissipates the energy input into the structure, thereby achieving the purpose of reducing structural damage. At present, a large number of dampers have been developed at home and abroad, such as friction dampers, viscoelastic dampers, and viscous liquid dampers. But there are high maintenance costs. Because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
Inventor 陈之毅袁勇
Owner TONGJI UNIV
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