Three-dimensional analysis of in-filled trench as barriers for isolating vibration in far field

GAO Guang-yun; LI Zhi-yi; QIU Chang

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Three-dimensional analysis of in-filled trench as barriers for isolating vibration in far field

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- Three-dimensional analysis of in-filled trench as barriers for isolating vibration in far field
- Vol. 26, Issue 8, (2005)
- 作者机构：
  
  1. 同济大学地下建筑与工程系,上海,200092
  2. 上海浦东工程建设管理有限公司,上海,201201
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU352
- Online First：26 December 2013，
  
  Published：2005
- 稿件说明：
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GAO Guang-yun, LI Zhi-yi, QIU Chang. Three-dimensional analysis of in-filled trench as barriers for isolating vibration in far field[J]. 2005, 26(8).
DOI：

GAO Guang-yun, LI Zhi-yi, QIU Chang. Three-dimensional analysis of in-filled trench as barriers for isolating vibration in far field[J]. 2005, 26(8). DOI：

摘要

把填充沟看作存在于弹性半空间的异质体，运用瑞利波散射的积分方程，对填充沟连续屏障远场被动隔振进行了三维分析，详细讨论了影响隔振效果的几个主要参数。研究表明，刚性材料比柔性材料具有更好的隔振效果，在隔振设计时应选择刚性屏障材料；填充沟的深度在一倍瑞利波波长内对隔振效果有较大影响，并且与宽度一起决定其隔振效果，但当屏障深度超过一倍瑞利波波长后，屏障深度对隔振效果的影响很小。

Abstract

In-filled trench is equivalent to an obstacle in half-space when it was used for isolating vibration. Based on the integral equation of Rayleigh wave scattering

the paper studied the passive isolating vibration in far field by in-filled trench barrier in 3-D

and discussed some key factors affecting effectiveness of barriers. The results show that rigid material has a better effect than flexible one in isolating vibration

so the former should be selected as barrier material in engineering. The effect of isolating vibration is due to the depth and thickness of the trench. When the depth of barriers is more than a Rayleigh wave length

the effectiveness of isolating vibration increases for a little with the barrier depth increase.

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