本文应用变截面有限厚壳条进行拱坝地震分析。该法只在横河向采用离散多项式插入,而沿坝高及顺河向均为解析函数,因而将三维问题化为一维数值问题求解,比目前常用的有限元法节省大量内存与计算时间。文中计算实例与有限元,模型、实物试验结果比较表明,用有限厚壳条法进行拱坝地震分析具有自由度少、速度快的明显优点。 In this paper, the arch dam seismic analysis is carried out with finite thickness shell with variable section. This method uses discrete polynomial interpolation only in Yokogawa and analytic functions along dam height and Shunhe River. Therefore, the three-dimensional problem is solved as a one-dimensional numerical problem, which saves a lot of memory and computation time compared with the commonly used finite element method. Comparing the calculation example with the finite element method, the model and the physical test results, it is shown that the seismic analysis of the arch dam with the finite thickness shell method has obvious advantages of less degree of freedom and faster speed.