Effect of parameters of three-phase unsaturated soils on wave propagation

XU Chang-jie; XU Liang-ying; YANG Yuan-ye

doi:10.16285/j.rsm.2015.S2.046

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Effect of parameters of three-phase unsaturated soils on wave propagation

更新时间：2026-06-25

- Effect of parameters of three-phase unsaturated soils on wave propagation
- Vol. 36, Issue S2, Pages: 340-344(2015)
- 作者机构：
  
  1. 华东交通大学土木建筑学院,江西,南昌,330013
  2. 浙江大学滨海和城市岩土工程研究中心,浙江,杭州,310058
  3. 杭州市城东新城建设投资有限公司,浙江,杭州,310058
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S2.046
  CLC： TU443
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
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XU Chang-jie, XU Liang-ying, YANG Yuan-ye. Effect of parameters of three-phase unsaturated soils on wave propagation[J]. 2015, 36(S2): 340-344.
DOI：

XU Chang-jie, XU Liang-ying, YANG Yuan-ye. Effect of parameters of three-phase unsaturated soils on wave propagation[J]. 2015, 36(S2): 340-344. DOI： 10.16285/j.rsm.2015.S2.046.

摘要

基于已建立的非饱和土中的波动方程，导出4种体波的波速以及衰减的解析表达式。数值分析了4种体波的波速、衰减与孔隙率以及Lame常数、之间的关系。结果表明，随孔隙率的增大，P1波和S波的波速有所提高，P2波和P3波的波速随孔隙率的增大而有所减小；3种P波的衰减有所增大，其中以P3波变化最为显著。P1波、P3波和S波的波速基本上不随Lame常数变化，P2波的波速随Lame常数的增大而稍有增大。P2及S波的衰减基本不随Lame常数变化，P1、P3波的衰减随Lame常数的增大而有所减小。3种P波的波速基本上不随Lame常数变化，S波的波速随Lame常数的增大而有所增大。P2及S波的衰减基本不随Lame常数变化，P1、P3波的衰减随Lame常数的增大而有所减小，其中P3波的变化最为显著。

Abstract

Based on the wave propagation equation in unsaturated soils

four kinds of body waves i.e. one is S wave

and other three are P waves

P1 wave

P2 wave and P3 wave

according to the wave velocity are found in unsaturated soils through theoretic deduction. Analytic expressions for wave velocity and attenuation are proposed. Numerical analysis about the relation between the wave velocity

attenuation and the void ratio and Lame constants are carried out. The results show that with the increasing of void ratio

the velocity of P1 wave and S wave become enhance; and the attenuation of three kinds of P waves becomes great

especially for P3 wave. Almost the velocity of P1

P3 and S don’t change with the changes of Lame constant

and the velocity of P2 wave become a little faster with the increasing of Lame constant Almost the attenuation of P2 wave and S wave don’t change with the Lame constant . The attenuation of P1 wave and P3 wave become smaller with the increasing of Lame constant Almost the velocity of three kinds of P waves don’t change with the variation of Lame constant

but the velocity of S wave becomes faster with the increasing of Lame constant . Almost the attenuation of P2 wave and S wave don’t change with the variation of the Lame constant . The attenuation of P1 wave and P3 wave decreases with the increasing of Lame constant

especially for P3 wave.

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