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Periodic pile and vibration isolation device

A vibration isolation and pile body technology, which is applied in protection devices, buildings, infrastructure engineering, etc., can solve the problem that vibration cannot continue to propagate

Active Publication Date: 2020-04-03
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, a large number of studies have shown that periodic structures have elastic wave band gap characteristics, that is, vibrations in certain frequency bands cannot continue to propagate through periodic structures
[0005] At present, there is no effective vibration isolation measure for propagation paths based on periodic structures in the prior art

Method used

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  • Periodic pile and vibration isolation device
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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a periodic pile and vibration isolation device. The periodic pile and vibration isolation device comprises a periodically designed pile structure; the pile structure comprises aplurality of piles; the cross section of each pile is X-shaped; the piles comprises scattered piles and locally resonant piles; scattered bodies of the scattered piles are a single material; a wrapping layer of a different material is added between a matrix and scattered bodies of locally resonant piles. The arrangement of the piles comprises hexagonal lattice arrangement, square lattice arrangement and rectangular lattice arrangement with different aspect ratios. The periodic pile and vibration isolation device utilizes the elastic wave band gap characteristic of a periodic structure (piles), so that the vibration level of a target frequency band is remarkably reduced to meet the vibration reduction requirement.

Description

technical field [0001] The invention relates to the technical field of rail transit vibration reduction, in particular to a periodic pile row vibration isolation device. Background technique [0002] As of December 31, 2018, a total of 35 cities in mainland my country have completed and put into operation 5766.6km of urban rail lines. With the rapid development of urban rail transit, the problem of environmental vibration pollution brought by it has become increasingly prominent, which has had adverse effects on building structures, precision instruments and equipment in buildings, people or artworks. It can be seen that it is of great significance and value to effectively control the environmental vibration caused by rail transit. [0003] The existing environmental vibration control methods of urban rail transit can be divided into three categories: vibration source vibration reduction measures, transmission path vibration isolation measures and passive vibration isolatio...

Claims

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Application Information

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IPC IPC(8): E02D31/08
CPCE02D31/08E02D2200/16E02D2300/0001E02D2300/002E02D2300/0031E02D2300/0037
Inventor 孙晓静姜博龙刘卫丰马蒙刘维宁邱瑞辰
Owner BEIJING JIAOTONG UNIV
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