Amplified negative-stiffness friction damping wall
A friction damping and negative stiffness technology, applied in the direction of walls, building types, building components, etc., can solve problems such as reducing structural stiffness, and achieve the effect of reducing structural stiffness, stable mechanical properties, and obvious negative stiffness characteristics.
Active Publication Date: 2021-02-09
BEIJING UNIV OF TECH +1
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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
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[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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The invention relates to an amplified negative-stiffness friction damping wall, and belongs to the technical field of vibration control. The amplified negative-stiffness friction damping wall comprises a top steel plate, a bottom friction plate, side plates, a nitrogen spring nesting device, a pre-pressing nitrogen spring, a polished rod, a linear bearing, a pressure transmission plate, a rail wheel, a secondary lever system, a rotating rod, a friction plate and a friction sheet. Elastic force of the pre-pressing nitrogen spring is amplified through the secondary lever system, the amplified elastic force extrudes the friction plate through the rotating rod, the friction sheet is embedded into the bottom of the friction plate to generate friction force with the bottom friction plate, and when the damping wall generates relative displacement, the rotating rod generates negative stiffness force along a horizontal component, namely negative stiffness damping is formed. The amplified negative-stiffness friction damping wall is applied to structural vibration reduction control, has a good and stable negative stiffness characteristic, and achieves the purpose of controlling structural displacement and acceleration response by reducing the equivalent stiffness of the structure and increasing structural damping.
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...
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Login to View More 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