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Low-frequency damping nine-sub-circular-pile earthquake meta-structure

A kind of ultra-clean, round pile technology, applied in the direction of infrastructure engineering, protective devices, buildings, etc., can solve the problems of large elastic-plastic, deformation and other problems of buildings, and achieve the effect of easy acquisition, flexible application, and protection of building structures

Inactive Publication Date: 2021-04-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method may cause large elastic-plastic deformation of the building under a large earthquake.

Method used

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  • Low-frequency damping nine-sub-circular-pile earthquake meta-structure
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  • Low-frequency damping nine-sub-circular-pile earthquake meta-structure

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Embodiment Construction

[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The low-frequency shock-absorbing nine-son circular pile seismic superstructure unit cell consists of the first steel pile (1), the second steel pile (3), the first hollow concrete pile (2), the second hollow concrete pile (4), and the soil layer (5) Composition.

[0032] In the first step, the outer side of the first steel pile (1) is covered with the first hollow concrete pile (2) to obtain a large round pile. In the second step, the outer side of the second steel pile (3) is coated with the second hollow concrete pile (4) to obtain a small round pile. Repeat the second step to get eight small round piles.

[0033] The outer side of the first steel pile (1) is in close contact with the inner side of the first hollow concrete pile (2). Likewise, the outer side of the second steel pile (3) is in close contact with the inner side of the second...

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Abstract

The invention discloses a low-frequency damping nine-sub-circular-pile earthquake meta-structure which is formed by extending earthquake meta-structure unit cells in two perpendicular directions in the horizontal plane and is designed on the periphery of a building foundation. Each earthquake meta-structure unit cell comprises a first steel pile, a second steel pile, a first hollow concrete pile, a second hollow concrete pile and a soil layer. The sections of the first steel pile and the second steel pile are circular. The sections of the first hollow concrete pile and the second hollow concrete pile are circular rings. The cross section of the soil layer is square, and nine circular through holes are distributed in the soil layer. The four small circular through holes are respectively positioned at four opposite corners of the square, and the distances between the small circular through holes and the center of the large circular through hole are equal. The distances between the centers of the small circular through holes are equal. The low-frequency damping nine-sub-round-pile earthquake meta-structure can attenuate earthquake surface waves in an omnibearing and multi-angle mode, protect a building, be simple in material obtaining and convenient to arrange, effectively reduce earthquake disasters and reduce post-disaster repair and maintenance cost of the building.

Description

technical field [0001] The invention relates to a low-frequency shock-absorbing nine-piece circular pile seismic metastructure, which is a new structure with good control and attenuation effects on seismic surface waves. Background technique [0002] my country is located between the Eurasian seismic belt and the circum-Pacific seismic belt. Earthquakes occur frequently, with high intensity, shallow focus, high earthquake risk, and serious earthquake damage to urban bearing bodies. Many projects have huge and complex structures, such as substations. Due to energy The distribution of bases and power loads is uneven, and a large number of substations need to be built in unfavorable areas with high seismic intensity. The structural damage, casualties and secondary disasters caused by earthquakes will bring huge economic losses and irreversible damage to society. Therefore, the prevention and control of earthquakes, especially for major projects, is particularly important. Amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/08
Inventor 石南南亢志宽罗方慧王利辉赵卓
Owner BEIJING UNIV OF TECH
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