An analytical solution to scattering of SH waves by a semi-circular viscoelastic weathered canyon

被引：0
|
作者：
Pan, Jiasuo [1 ]
Zhang, Ning [2 ]
Dai, Denghui [1 ]
Lu, Haijun [1 ]
Cai, Guojun [2 ]
Gao, Yufeng [1 ]
机构：
[1] Hohai Univ, Key Lab, Minist Educ Geomech & Embankment Engn, Nanjing 210098, Peoples R China
[2] Anhui Jianzhu Univ, Anhui Prov Key Lab Intelligent Underground Detect, Hefei 230601, Peoples R China
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2025年 / 190卷
基金：
中国国家自然科学基金;
关键词：
Wave propagation; Weathered canyon; SH waves; Site effects; Wave function expansion; SURFACE MOTION; ALLUVIAL VALLEYS; GROUND MOTION; AMPLIFICATION;
D O I：
10.1016/j.soildyn.2024.109161
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The soil and topographic amplification effects of a weathered canyon may pose a potential threat to the dynamic stability of the engineering structures (i.e., dams, buildings and bridges) located in such kind of sites. To reveal the influence of the surficial inhomogeneous viscoelastic soil layer of a weathered canyon on the ground motion, an analytical solution to scattering of SH waves by a semi-circular viscoelastic weathered canyon is presented in frequency domain in this paper using the wave function expansion method. Then, the frequency domain results are transformed into the time domain results using the inverse fast Fourier transform (iFFT) algorithm. The parametrical analysis indicates that the amplitude, duration and energy distribution during seismic wave propagation are significantly affected by the surficial inhomogeneous soil layer of the viscoelastic weathered canyon.
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页数：9
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