不规则场地上基础的动阻抗及其在入射波作用下的输入运动

本文根据边界元方法建立了位不规则场上刚体的动阻抗和在入射平面波作用下的有效输入运动的分析模型，分析模型考虑了不规则场地和基础对入射波的散射作用以及土与基础的相互作用，通过验证确认了本方法的正确性，文中计算了凹陷，高地和盆地三种不规则场地土不同条件基础的动阻和有效输入的运动，并与半空间地基上相应基础的情况作了对比，计算表明，当基础尺寸与不规则场地范围可比时有必要用本文模型分析不规则场地的影响和土一结

DYNAMIC BEHAVIOR OF A FOUNDATION LOCATED ON IRREGULAR TOPOGRAPHY SUBJECTED TO INCIDENT WAVES

Based upon the boundary element method,an analytical model is developed to study the impedance function and the effective input motion of a rigid foundation located on irregular topography subjected to incident waves. In the model the scattering effect of the irregular topography and the foundation on the incident waves, and the interaction between the foundation and the soil are considered. The impedance function and the effective input motion of surface and embedded foundations with different radii located on a canyon, a hill and a sediment-filled valley have beeen calculated and compared with those of the half-space case. This model is specially useful when the foundation dimension is of the same order as the irregular topography.