文章实现了拱坝与地基耦合分析。用样条插值拟合拱坝几何外形，用无限样条边界元模拟地基，用传递矩阵法分解子结构，用奇性校正特解场法计算边界应力。抛弃传统拱坝应力分析方法中的拱梁体系简化和关于地基的Ｆ．ｖｏｇｔ假定，即使在稀疏剖分下，也能够给出精度较高的位移场、应力场和地基反力场。为拱坝应力分析提供一条新途径 The article has realized the coupling analysis of arch dam and foundation. The geometric shape of the arch dam is fitted by spline interpolation, the foundation is simulated by the boundary element of infinite spline, the substructure is decomposed by the transfer matrix method, and the boundary stress is calculated by singularity correction method. Abandon the traditional arch dam stress analysis method of arch beam system simplification and on the foundation of F. vogt assumes that displacement fields, stress fields and ground-based reaction fields with high accuracy can be given even under sparse subdivision. It provides a new way for arch dam stress analysis