【摘要】 采用一种间接边界积分方程法求解了柱面波在半空间中洞室周围的散射问题。通过边界条件的验算以及退化解答与精确解的比较,验证了本文方法的计算精度。文中主要分析了入射波频率、波源与洞室距离等参数对洞室附近地表位移响应和洞室动应力集中的影响,得出了一些有益的结论。更多还原

【Abstract】 The scattering of cylindrical waves by a cavity in half-space is investigated by using an indirect boundary integral equation method(IBIEM).By checking the satisfaction of the boundary condition and comparing the degenerated result with the exact solution,the accuracy of this study is verified.The effect of the incident frequency,the distance between wave source and cavity,etc.on the surface ground motion and the dynamic stress concentration factor(DSCF) around the cavity are discussed,and some useful conclusions are obtained.They are helpful to the explosion resistant design of engineerings.更多还原