2D analysis of vibration-isolation efficiency of an open trench-wave
impedence block barrier

ZHOU Feng-xi; MA Qiang; ZHOU Zhi-xiong

doi:10.16285/j.rsm.2020.0484

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2D analysis of vibration-isolation efficiency of an open trench-wave impedence block barrier

更新时间：2026-06-25

- 2D analysis of vibration-isolation efficiency of an open trench-wave impedence block barrier
- Vol. 41, Issue 12, Pages: 4087-4092(2020)
- 作者机构：
  
  1. 兰州理工大学土木工程学院,甘肃,兰州,730050
  2. 青海大学土木工程学院,青海,西宁,810016
  3. 青海大学青海省建筑节能材料与工程安全重点实验室,青海,西宁,810016
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2020.0484
  CLC： TU470
- Online First：18 January 2021，
  
  Published：2020
- 稿件说明：
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ZHOU Feng-xi, MA Qiang, ZHOU Zhi-xiong. 2D analysis of vibration-isolation efficiency of an open trench-wave impedence block barrier[J]. 2020, 41(12): 4087-4092.
DOI：

ZHOU Feng-xi, MA Qiang, ZHOU Zhi-xiong. 2D analysis of vibration-isolation efficiency of an open trench-wave impedence block barrier[J]. 2020, 41(12): 4087-4092. DOI： 10.16285/j.rsm.2020.0484.

摘要

针对地基隔振控制，提出了一类新型的空沟?波阻板联合隔振屏障，并对其隔振性能进行了数值分析。首先，利用复伸展坐标变换，在频域内建立了完全匹配层（perfect matched layer

PML）吸收边界的控制方程；其次，利用Galerkin近似技术，给出了以位移为基本未知量的二阶非分裂格式PML的频域有限元计算列式；最后，通过数值算例分析了空沟?波阻板联合隔振屏障的物性参数（地基与波阻板的模量比）、几何参数（空沟深度、波阻板深度）以及载荷参数（振动波频率）等对其隔振性能的影响规律。结果表明，空沟?波阻板联合隔振屏障结合了空沟和波阻板各自的优势，可以有效地控制不同频率振源引起的地基振动。

Abstract

In view of the control of ground vibration isolation

a novel type of vibration isolation barrier

open trench-wave impedence block barrier

is proposed. The vibration isolation performance is analyzed by numerical simulation. Firstly

the governing equation of a non-splitting perfect matched layer (PML) absorbing boundary is established in the frequency domain by using complex coordinate stretching. Secondly

using Galerkin approximation technology

the frequency-domain finite element method formula of the second-order non-splitting PML with displacement as the basic unknown quantity is given. Finally

through numerical examples

the influence of physical parameters (modulus ratio of foundation to wave barrier)

geometric parameters (trench depth

wave impedence block depth) and load parameters (frequency of vibration source) on the vibration isolation performance are investigated. The results show that the open trench-wave impedence block barrier can effectively control the ground vibration caused by different frequency vibration sources.

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