弹性层状半空间中无限长洞室对斜入射平面SH波的三维散射（Ⅰ）--方法及验证

梁建文　陈健琦　巴振宁

弹性层状半空间中无限长洞室对斜入射平面SH波的三维散射（Ⅰ）--方法及验证

梁建文　陈健琦　巴振宁

(中国天津300072天津大学土木工程系)

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中图分类号: P315.3+1
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出版历程
- 发布日期: 2012-11-13

3D scattering of obliquely incident SH waves by a cylindrical cavity in layered elastic half-space (Ⅰ): Methodology and verification

Liang Jianwen　Chen Jianqi　Ba Zhenningcom sh advance

(Department of Civil Engineering, Tianjin University, Tianjin 300072, China)

摘要

摘要: 利用间接边界元法, 求解了弹性层状半空间中无限长洞室对斜入射平面SH波的三维散射问题. 通过与文献结果进行对比, 验证了本方法的正确性. 与工程中常用的二维模型比较表明, 工程中将三维散射问题简单地分解为平面内问题和平面外问题的做法存在较大误差. 文中并研究了斜入射角度对散射的影响, 表明斜入射角度对地表位移幅值有着重要影响.
- 弹性层状半空间　无限长洞室　斜入射　平面SH波　三维散射　放大作用
Abstract: 3D scattering of obliquely incident plane SH waves by a cylindrical cavity in a layered half-space is studied using indirect boundary element method. The validity of the approach is verified by comparison with other papers on this subject. Comparison with models used in engineering shows that the 3D scattering problem cannot be simply decomposed into in-plane and out-of-plane 2D problems, and the simple handling may bring about large errors. The effect of obliquely incident angle on the scattering is also studied, and the result shows that obliquely incident angle has a significant effect on 3D scattering.

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参考文献(1)

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