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本文对土-基础-非对称结构共同作用体系在斜入射SH波作用下的扭转动力响应进行了研究。从波动理论出发,导出了半空间表面矩形基础位移和力场之间的影响函数阵及表面矩形地基的动力柔度函数和在斜入射SH波作用时刚性矩形基础的输入运动表达式;同时建立了共同作用体系的运动方程。最后讨论了斜入射SH波作用下矩形基础和地基共同作用的动力特性。结果表明,非垂直入射SH波作用时响应显著地不同于通常假设的垂直入射波时的响应,由非垂直入射SH波引起的扭转响应应予以考虑。
In this paper, the torsional dynamic response of a soil-base-asymmetric structure interacting system under oblique incident SH wave is studied. Starting from the wave theory, the dynamic compliance function of the function matrix and the surface rectangular base between the rectangular base displacement and force field on the half-space surface and the input motion expression of the rigid rectangular base under oblique incident SH wave are derived. The equations of motion of the joint action system. Finally, the dynamic characteristics of the interaction between the rectangular foundation and the ground under oblique incident SH waves are discussed. The results show that the response of non-normally incident SH waves is significantly different from that of the normally assumed normal incident wave, and the torsional response due to non-normally incident SH waves should be considered.