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Novel nonlinear earthquake reduction device

A nonlinear shock absorber, a new type of technology, applied in the direction of earthquake resistance, building types, building components, etc., can solve problems such as failure to meet safety requirements, achieve good vibration energy consumption control effect, flexible setting position, and reduce natural vibration frequency Effect

Inactive Publication Date: 2017-05-10
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the seismic action of the structure exceeds the ultimate bearing capacity, it cannot meet the safety requirements

Method used

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Experimental program
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Effect test

Embodiment 1

[0030] The new nonlinear shock absorber consists of: 1. End fixed member, 2. Connecting embedded parts, 3. Silicone damping pad, 4. Nonlinear rigid spring, 5. Steel pipe slideway, 6. NES vibrator. The silicone damping pad 3 is the same height as the cubic rigid NES vibrator 4, and is fixed on the fixed members at both ends by bolts; the hollow cylindrical steel pipe slideway is connected on the fixed members at both ends by bolts; the rigid cube The diameter of the cylindrical hole at the centroid of the NES vibrator is larger than the diameter of the hollow cylindrical steel pipe slideway, and the cubic rigid NES vibrator is placed on the hollow cylindrical steel pipe slideway; one end of the nonlinear spring is welded on the cubic rigid NES vibrator, and the other end is welded on the The end is fixed on the member, and both sides are consistent.

Embodiment 2

[0032] Description of working process:

[0033] For the above-mentioned new type of nonlinear shock absorber, for reinforced concrete frame structure buildings, if the shock absorber is placed in the beam during design, it is necessary to set up embedded parts in the beam to ensure the reliable connection between the shock absorber and the structure and to control its slippage. The friction coefficient of the road ensures the energy absorption level of the auxiliary structure.

[0034] When a rare earthquake occurs, while the damping device is in a strong earthquake working state, the movement of the device body is enhanced, and the seismic frequency is captured instantly, so that the frequency of the damping device is close to the frequency of the main structure, so that the frequency of the main structure is transmitted to the shock absorber , dissipate the energy of the main structure, reduce the effect of earthquake on the main structure, and can further prolong the natura...

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Abstract

The invention relates to a novel nonlinear earthquake reduction device. The novel nonlinear earthquake reduction device can effectively dissipate energy introduced by a body and introduce the energy into the earthquake reduction device in a one-way mode, broadband earthquake resisting is achieved, resonance damage is avoided, and the novel nonlinear earthquake reduction device has suitable rigidity and damping capacity, and is stable in performance, compact in structure, variable in frequency, controllable in damage and easy to manufacture. A vibration absorber is mainly a horizontal earthquake absorbing device, the whole structure is in a long-strip shape, and the novel nonlinear earthquake reduction device comprises end fixing members (1), connecting pre-embedded pieces (2), silica-gel damping mats (3), nonlinear rigid springs (4), steel tube sliding ways (5) and a NES vibrator (6). The novel nonlinear earthquake reduction device can be used for interlayer earthquake isolation and basic earthquake isolation of an engineering structure, and can also be used for earthquake isolation of a mechanical device.

Description

[0001] Technical field: [0002] The invention relates to a novel nonlinear shock absorber. [0003] Background technique: [0004] Due to the release of a large amount of energy during the transmission of seismic waves underground, traditional building structures rely on the strength, stiffness and ductility of the structure itself to consume seismic energy. When the seismic action of the structure exceeds the ultimate bearing capacity, it cannot meet the safety requirements. If an auxiliary substructure that can greatly consume and capture seismic energy is installed in the structure, and the energy is transmitted to the auxiliary substructure instead of being borne by the main structure, the effect of earthquakes on the main structure will be effectively reduced and Second, the shock-absorbing substructure will change the dynamic response of the main structure under earthquake action, weaken the earthquake action dominated by the first-order mode shape, thereby reducing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 王海飙于良陈曦光范定坚陈冲薛天琼于有川杨海旭
Owner NORTHEAST FORESTRY UNIVERSITY
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