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本文应用波动场的三维有限元方程,对应用反射波法检测桩基质量时波动的传播特征进行了三维数值模拟,通过理论计算模拟给出了反射波的基本特征。从反射P波和反射S波的特点,阐述了使用三分向传感进行低应变测试的必要性
In this paper, the three-dimensional finite element equation of the undulatory field is applied to the three-dimensional numerical simulation of the propagation characteristics of the wave when the quality of the pile foundation is detected by the reflected wave method. The basic characteristics of the reflected wave are given by theoretical calculations. From the characteristics of reflected P-wave and reflected S-wave, the necessity of low-strain testing using three-dimension directional sensing is described.