Propagation characteristics of Rayleigh waves in unsaturated soils

ZHOU Feng-xi; LIU Hong-bo

doi:10.16285/j.rsm.2018.0899

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Propagation characteristics of Rayleigh waves in unsaturated soils

更新时间：2026-06-25

- Propagation characteristics of Rayleigh waves in unsaturated soils
- Vol. 40, Issue 8, Pages: 3218-3226(2019)
- 作者机构：
  
  1. 兰州理工大学土木工程学院,甘肃,兰州,730050
  2. 兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃,兰州,730050
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.0899
  CLC： TU435
- Online First：25 August 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
ZHOU Feng-xi, LIU Hong-bo. Propagation characteristics of Rayleigh waves in unsaturated soils[J]. 2019, 40(8): 3218-3226.
DOI：

ZHOU Feng-xi, LIU Hong-bo. Propagation characteristics of Rayleigh waves in unsaturated soils[J]. 2019, 40(8): 3218-3226. DOI： 10.16285/j.rsm.2018.0899.

摘要

基于对非饱和多孔介质的研究成果，考虑孔隙中液相和气相的相互影响，研究了非饱和土地基中Rayleigh波的传播特性。通过非饱和土中固相、液相和气相的质量平衡方程、动量平衡方程和非饱和土有效应力原理，建立了问题的弹性波动方程。通过引入势函数及考虑自由透水（透气）的边界条件，经过理论推导给出了非饱和土中Rayleigh波的弥散特征方程。通过数值算例分析了Rayleigh波的波速和衰减系数随饱和度、频率和固有渗透系数等因素的变化规律。结果表明：不同饱和度下波速随频率和固有渗透系数的变化均是先不变，然后小幅下降，再急剧增加，最后趋于一致；衰减系数在不同饱和度下随频率的增大而增大，随固有渗透系数的增大而先增大后减小。

Abstract

Based on the research of unsaturated porous media

the propagation characteristics of Rayleigh waves in unsaturated soil are studied by considering the interaction between liquid and gas phases in the pores. The elastic wave equations are established using the mass balance equations

the momentum balance equations and the effective stress principle of the unsaturated soil. The dispersion equations of Rayleigh wave in unsaturated soil are derived by introducing potential functions and combining free permeable and breathable boundary conditions. Finally

the effects of saturation degree

frequency

and intrinsic permeability coefficient on the wave velocity and attenuation coefficient are discussed by numerical examples. The results show that the trend of wave velocity is first unchanged with the frequency and inherent permeability coefficient

then decreases slightly

then increases sharply

and finally becomes consistent at different saturations. Moreover

the attenuation coefficient first increases with the increase of frequency and then decreases with the increase of the intrinsic permeability coefficient at different saturations.

关键词

Keywords

references

Views

222

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Energy characteristics of Rayleigh waves propagation in unsaturated soils

Propagation characteristics of thermoelastic wave in unsaturated soil

Characterization of wave propagation in unsaturated thermo-viscoelastic porous media

Characterization of wave propagation in thermo-viscoelastic media

Propagation characteristics of Rayleigh waves in double-layer unsaturated soils

Related Author

ZHOU Feng-xi

YAO Tao-qi

LIU Hong-bo

ZHOU Feng-xi

YUE Guo-dong

HAO Lei-chao

WAN Shuo

Related Institution

School of Civil Engineering, Southeast University

Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology,,, Chin

School of Civil Engineering and Water Resources, Qinghai University

Qinghai Provincial Key Laboratory of Building Energy-saving Materials and Engineering Safety

Institute of Geotechnical Engineering, Xi’an University of Technology

AI问答

⁰