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文章导出了特解边界元与动力有限元的耦合方程，并使耦合方程的自由度缩减到有限元域及其和边界元域的耦合边界上。这样得到的耦合方程不增加原有限元方程的带宽，易于计算机编程。最后对剪力墙结构与土动力相互作用问题作了数值分析
In this paper, we derive the coupled equations of the special boundary element and the dynamic finite element, and reduce the degree of freedom of the coupled equation to the coupled boundary of the finite element domain and its boundary element domain. The coupling equation thus obtained does not increase the bandwidth of the original finite element equation and is easy for computer programming. Finally, the numerical analysis of the interaction between shear wall structure and soil dynamic is made