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Enlarged Negative Stiffness Frictional Damping Wall

A friction damping, negative stiffness technology, applied in the direction of walls, building types, buildings, etc., can solve problems such as reducing structural stiffness, and achieve the effect of long stroke and stable mechanical properties

Active Publication Date: 2021-10-26
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention proposes an enlarged negative-stiffness frictional damping wall to solve the problems of building shock absorption, reducing structural stiffness and seismic reinforcement

Method used

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  • Enlarged Negative Stiffness Frictional Damping Wall
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  • Enlarged Negative Stiffness Frictional Damping Wall

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Embodiment Construction

[0037] Attached below Figure 1-14 The structure and application principle of the enlarged negative stiffness frictional damping wall of the present invention are further described.

[0038] Such as Figure 1-14 As shown, an enlarged negative stiffness friction damping wall of the present invention, the damping wall includes a top steel plate 1, a bottom friction plate 2, a side plate 3, a nitrogen spring nesting device 4, a pre-compressed nitrogen spring 5, a polished rod 6, and a linear bearing 7. Pressure transmission plate 8, track wheel 9, first stage lever 10, connecting rod 11, second stage lever 12, rotating rod 13, friction plate 14, friction plate 15. Such as Figure 1-2 As shown, the top steel plate 1, the bottom friction plate 2 and a plurality of side plates 3 form an external wall. The side plate 3 is welded to the bottom friction plate 2, and the top steel plate 1 is inserted into the reserved slot of the side plate 3 and fixed by welding. Such as image 3 ...

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Abstract

The invention relates to an enlarged negative stiffness friction damping wall, which belongs to the technical field of vibration control. Including top steel plate, bottom friction plate, side plate, nitrogen spring nesting device, pre-compressed nitrogen spring, polished rod, linear bearing, pressure transmission plate, track wheel, secondary lever system, rotating rod, friction plate, friction plate; pre-compressed nitrogen The elastic force of the spring is amplified by the secondary lever system, and the amplified elastic force squeezes the friction plate through the rotating rod. The friction plate inlaid at the bottom of the friction plate and the friction plate at the bottom generate friction force. Negative stiffness force, that is, negative stiffness damping. The invention is applied in the structure damping control, has good and stable negative stiffness characteristics, reduces the equivalent stiffness of the structure, increases the structure damping, and realizes the purpose of controlling the structure displacement and acceleration response.

Description

technical field [0001] The invention relates to an enlarged negative rigidity frictional damping wall, which can be applied to the vibration reduction control of engineering structures and belongs to the technical field of vibration control. Background technique [0002] my country is a country with frequent earthquakes. The collapse of buildings during earthquakes is the main cause of casualties. Therefore, people have put forward higher requirements for the anti-seismic technology of building structures. At present, shock absorption technology can effectively improve the seismic performance of the structure, but the traditional shock absorption technology needs to arrange dampers on more floors, which occupies a large amount of structural space and affects the use of the structure. However, negative stiffness shock absorption technology can reduce the number of dampers used by arranging dampers at the bottom of the structure to form a mechanical shock-isolation layer. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H9/02E04B1/98E04B2/00
CPCE04B1/98E04B2/00E04H9/021
Inventor 孙天威彭凌云官亚西付艳伟
Owner BEIJING UNIV OF TECH