Low-frequency damping square annual ring earthquake meta-structure

A square, annual ring technology, applied in infrastructure engineering, construction, climate change adaptation, etc., can solve the problems of building damage, large amount of structural repair, and irreparable repair, and achieve the effect of protecting buildings, simple material selection, and simple structure structure.

Active Publication Date: 2021-03-26
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are serious building damages after the earthquake, and the amount of structural repairs is large or even irreparable.

Method used

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  • Low-frequency damping square annual ring earthquake meta-structure
  • Low-frequency damping square annual ring earthquake meta-structure
  • Low-frequency damping square annual ring earthquake meta-structure

Examples

Experimental program
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Embodiment Construction

[0029] Describe the present invention in detail below in conjunction with accompanying drawing: square class growth ring earthquake metastructure comprises the first concrete layer (1), the second concrete layer (10), the first rubber layer (3), the second rubber layer (5), The third rubber layer (7), the fourth rubber layer (9), the first steel pipe layer (2), the second steel pipe layer (4), the third steel pipe layer (6), and the fourth steel pipe layer (8).

[0030] Install the first concrete layer (1) first, and set it at the core position of the unit cell;

[0031] After the first concrete layer (1) is set, the first steel pipe layer (2) is arranged outside, and the first rubber layer (3) is arranged outside the steel pipe layer (2). The inner wall and the outer wall of the first steel pipe layer (2) are respectively connected to the outer wall of the first concrete layer (1) and the inner wall of the first rubber layer (3);

[0032] A second steel pipe layer (4) is arr...

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Abstract

The invention discloses a low-frequency damping square annual ring earthquake meta-structure. The earthquake meta-structure is arranged in the circumferential direction of the periphery of a building.According to the square annual ring earthquake meta-structure, after core concrete columns are arranged, steel pipe layers and rubber layers are alternately enclosed on the outer layers of the core concrete columns; and finally, a concrete layer is enclosed on the outermost side. The earthquake meta-structure is a periodic structure designed based on the phononic crystal theory, and has a band gap characteristic. When earthquake surface waves come, the earthquake surface waves in a band gap frequency range cannot pass through the designed structure. The earthquake meta-structure is arranged around a building foundation, is not connected with the building and can shield earthquake surface waves remotely, so that the building is protected. Geometric parameters of the concrete layer, the steel pipe layers and the rubber layers of the structure are changed, the band gap position can be adjusted, different band gap widths are generated, and therefore corresponding matching parameters can be adopted for buildings with different heights and different site conditions.

Description

technical field [0001] The invention relates to a low-frequency shock-absorbing square tree ring-like seismic metastructure, which is a new structure capable of effectively attenuating seismic surface waves. Background technique [0002] Millions of earthquakes occur every year around the world. After an earthquake, seismic waves with a lot of energy travel in all directions from the source deep underground. When they meet the surface, the energy travels along the surface, the surface waves of an earthquake. Rayleigh waves are one of the surface waves whose frequency ranges from 0.1 to 20 Hz and are extremely harmful to structures because the resonant frequency of buildings is exactly in this frequency range. According to the surveys and studies of earthquake disasters around the world in recent years, buildings will be tilted, toppled, etc. damaged after a strong earthquake and lose some or all functions, and then a series of secondary disasters such as fire and natural ga...

Claims

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Application Information

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IPC IPC(8): E02D31/08E02D5/22
CPCE02D31/08E02D5/22Y02A10/11
Inventor 石南南亢志宽罗方慧王利辉赵卓
Owner BEIJING UNIV OF TECH
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