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| 瑞雷波多模式叠加耦合机理研究 | |
| 引用本文： | 宋先海,李刚. 瑞雷波多模式叠加耦合机理研究[J]. 工程勘察, 2011, 0(5): 81-85,90 |
| 作者姓名： | 宋先海 李刚 |
| 作者单位： | 长江水利委员会长江科学院; |
| 基金项目： | 长江科学院中央级公益性科研院所基本科研业务费项目(YWF0906CKSF2010009); 水利部公益性行业科研专项经费项目(201101028)联合资助 |
| 摘 要： | 本文针对三种常见的典型地质结构深入研究了瑞雷波多模式相互作用的叠加耦合机理.研究结果表明:对于递增模型,基阶波能量仍占主导地位,叠加频散曲线实际上就是基阶波频散曲线,此时不会出现"之"字形回折现象,反演分析时可仅利用基阶波信息;而对于低速软弱夹层或高速硬夹层等复杂地质结构,基阶波能量则在某些频段处于次要地位,叠加频散曲... |
| 关 键 词： | 表面波 瑞雷波 多模式 频散曲线 低速软弱夹层 |
Study on coupling mechanism of multi-mode superposition of Rayleigh wave |
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| Song Xianhai,Li Gang. Study on coupling mechanism of multi-mode superposition of Rayleigh wave[J]. Geotechnical Investigation & Surveying, 2011, 0(5): 81-85,90 | |
| Authors: | Song Xianhai Li Gang |
| Affiliation: | Song Xianhai,Li Gang(Changjiang River Scientific Research Institute,Changjiang Water Resources Commission,Wuhan 430010,China) |
| Abstract: | Based on three synthetic models commonly encountered in shallow engineering site investigations,the coupling mechanism of the multi-mode superposition of Rayleigh wave is theoretically analyzed to provide the powerful insights into the contributions of multiple modes to Rayleigh wave dispersion characteristics.The study results show that: for a normally dispersive profile,the fundamental mode is strongly predominant on higher modes at each frequency,and the superposed dispersion curve is practically coincid... |
| Keywords: | surface wave Rayleigh wave multiple modes dispersion curve low-velocity weak layer |
| 本文献已被 CNKI 维普 等数据库收录！ | |