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| Forward calculation of Rayleigh waves dispersion characteristics considering interlayer contact state based on spectral element method |
| Received:August 18, 2022 Revised:November 04, 2022 |
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| DOI：10.7511/jslx20220818002 |
| KeyWord:Rayleigh waves dispersion curves spectral-element method interlayer contact state numerical simulation of velocity-stress finite difference |
| Author | Institution |
| 杨博 |
重庆交通大学 土木工程学院, 重庆 ;浙江大学 地球科学学院, 杭州 ;重庆交通大学 交通土建工程材料国家地方联合工程实验室, 重庆 |
| 汤跃文 |
重庆交通大学 土木工程学院, 重庆 |
| 夏江海 |
浙江大学 地球科学学院, 杭州 |
| 张萌 |
重庆交通大学 土木工程学院, 重庆 |
| 龙友明 |
重庆交通大学 土木工程学院, 重庆 |
| 张锐 |
长沙理工大学 公路养护技术国家工程研究中心 |
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| Abstract: |
| In order to improve the refinement level of Rayleigh waves applied to layered soil-based exploration,based on spectral-element method(SEM),this study established the theoretical dispersion equation for Rayleigh waves considering different interlayer contact states through Goodman model and Matsui interlayer slip for Rayleigh waves coefficient.For the typical layered subgrade structures,comparing calculations of the dispersion curves of Rayleigh waves multi-order modes with SEM and fast vector transfer analytic method,the results show that the average relative error between the calculation results of SEM and the corresponding results of analytic method is under 0.3%,which indicates high calculation accuracy.On this basis,the sensitivity analysis was carried out by changing the interlayer contact state,and the influence of interlayer contact state on the dispersion characteristics of Rayleigh waves was revealed by SEM.Finally,the reliability of the SEM for calculating the dispersion characteristics of Rayleigh waves under different contact states between layers was verified by comparing with the numerical simulation of velocity-stress finite difference. |
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