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標題: The Factors Influencing the Numerical Simulation of the Spectral Analysis of the Surface Waves Method
作者: Pei-Hsun Tsai
Chang-Hai Chien
Zheng-Yi Feng
Yu-Ting Lin
關鍵字: Spectral analysis of surface waves (SASW);cross power spectrum;shear wave velocity;numerical simulation
出版社: 台北市:中華水土保持學會
Project: 中華水土保持學報, Volume 43, Issue 4, Page(s) 359-368.
A numerical study was performed to identify the significant factors that influence numerical simulation of the spectral analysis of the surface waves (SASW) method. Damping, impulsive force magnitude, time step, element size of mesh, and soil layer profile were all parametrically studied. An axisymmetric finite difference code was adopted to simulate the surface wave propagation in layered media. The phase spectra method was utilized to obtain the dispersion curves and shear wave velocity profiles of the soil strata. The most important factor influencing the SASW numerical modeling is the shear wave velocity profile of the soil layers. The shear wave velocity of the soil layer also dominates the fluctuation of the cross power spectrum.
Appears in Collections:第43卷 第04期

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