Energy characteristics of Rayleigh waves propagation in unsaturated soils

被引：0
|
作者：
Zhou Feng-xi [1 ,2 ]
Yao Tao-qi [1 ]
Liu Hong-bo [3 ]
机构：
[1] Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, Engn Res Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Gansu, Peoples R China
[3] Southeast Univ, Sch Civil Engn, Nanjing 211189, Jiangsu, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2023年 / 44卷
基金：
中国国家自然科学基金;
关键词：
unsaturated soil; Rayleigh wave; wave velocity; attenuation coefficient; energy distribution; HYDRAULIC CONDUCTIVITY; ATTENUATION;
D O I：
10.16285/j.rsm.2022.0659
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Based on the theory of porous medium and continuum mechanics, the dispersion equation of Rayleigh waves in unsaturated soils are established using the mass balance equations, the momentum balance equations and the effective stress principle. The influence of the saturation on wave velocity, displacement response and energy flow distribution are studied by numerical examples. The results show that the characteristics of Rayleigh waves mainly reflects the characteristics of compressed P-1 wave and shear wave, and its velocity, displacement and energy distribution are significantly affected by degree of saturation. The propagation velocity and attenuation of Rayleigh wave are dispersive, and the increase of the saturation in the unsaturated soil will cause a significant decrease of the displacement amplitude, as well as the shear wave component in the Rayleigh waves energy will increase with increasing the saturation.
引用
收藏
页码：612 / 622
页数：11
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