ABSTRACT

In this paper, a time domain boundary element method is developed for obtaining the seismic amplification of the surface topographies. Initially, Fourier series is applied into the dual reciprocity method and required boundary element fundamental solutions are extracted. After having presented the required formulations, accuracy of the method is verified by comparing its results with available analytical solutions. Finally, the topography of Zanjan-valley region is evaluated under the propagation of the P waves with different incident angles and frequencies. The results indicate that the variation of the seismic responses strongly depends on the wave properties and topology of the model.

摘要

在本文中，开发了一种时域边界元方法来获得地表形貌的地震放大。最初，将傅里叶级数应用于对偶互易法，并提取所需的边界元基本解。在提出所需的配方后，通过将其结果与可用的分析解决方案进行比较来验证该方法的准确性。最后，对不同入射角和频率的P波传播下的赞詹河谷地区地形进行了评估。结果表明，地震响应的变化很大程度上取决于模型的波特性和拓扑结构。