波动理论在基桩完整性定量分析中的应用

Application of Stress Wave Theory to Quantitative Analysis of Pile Integrity

基于一维应力波理论，将桩身离散成一组微小柱单元，桩土相互作用用线性阻尼壶来模拟，阻尼壶阻尼系数可与土体剪切波速、密度等土性参数结合起来。通过对桩顶实测波形拟合反分析，可得到桩身波阻抗分布，并给出该方法在模型桩上的应用。

Based on 1 D stress wave theory,a pile body is discretized into a series of column elements.The interaction of pile soil is modeled by linear dashpot,the viscosity coefficient is related to soil paramters, such as shear velocity and density. The pile impedance profile can be determined by inverse analysis through matching particle velocity integrated from acceleration signal measured at the top of a pile.The application of the method to model piles is also introduced.