Rhomboid earthquake metamaterial with low-frequency damping characteristic

Abstract

The invention discloses a rhomboid earthquake metamaterial with the low-frequency damping characteristic. The rhomboid earthquake metamaterial is formed by performing continuation on a plurality of earthquake metamaterial structure unit cells in the two specific directions parallel to a plate face. A honeycomb-like shape is formed with central columns at the center of the rhomboid earthquake metamaterial. The rhomboid earthquake metamaterial is distributed on the earth surface around a building, and the 0-20-Hz earthquake surface wave is effectively attenuated through the band gap characteristic. The earthquake metamaterial can be distributed on the earth surface around the building, the earthquake wave is effectively attenuated in the earthquake mesogene field through the band gap characteristic, and therefore the effect of protecting the building is achieved.

Description

technical field [0001] The invention belongs to the technical field of earthquake damping, and in particular relates to a diamond-shaped seismic metamaterial with low-frequency damping properties. Background technique [0002] Earthquake is a violent event caused by the movement of the earth's medium. A large earthquake releases a large amount of energy in a short period of time. In the episeismic area, it can complete devastating damage in 10-20 seconds, posing a huge threat to people's lives and property. my country's earthquake activity is characterized by shallow focus, wide distribution, high frequency and high intensity, and it is a country with serious earthquake disasters. And at present, the level of science and technology is still unable to accurately predict the arrival of earthquakes. Therefore, for earthquakes, it is particularly important to improve the ability of buildings to resist earthquakes. [0003] The common measures in the earthquake resistance of exi...

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Problems solved by technology

[0003] The common measures in the earthquake resistance of existing buildings are mainly the use of methods such as shock absorption and energy dissipation, structural antiseismic and shock isolation; among them, the most commonly used is the shock absorption and energy dissipation technology, and the shock absorption and energy dissipation technology is mainly the use of various dampers. The damper is often combined with the main structure to guide the seismic energy to a special device for consumption to protect the safety of the main structure, but at the same time, because it is often combined with the building, when the earthquake reaches the building, the energy is often huge, reducing Shock effect is limited

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