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为确定接触面参数的取值问题从而减小桩土体系中桩基与土体之间发生的相对滑移危害.引入摩尔-库仑和颗粒流理论,以桩土接触面粗糙程度作为切入点进行深入分析,确定可以作为切向刚度定量计算的影响因素.采用回归分析探究能够反映接触面切向刚度与影响因素关系的回归模型.建立切向刚度与两类影响因素之间的数学关系,通过Matlab数值分析软件,进行三维立体曲面拟合,从而得到接触面切向刚度变化规律及取值方法.以分析出接触面切向刚度对桩土体系工作性能的影响.
In order to determine the value of interface parameters, the relative slip between pile foundation and soil mass in pile-soil system is reduced. By introducing the theory of mole-coulomb and particle flow, the roughness of pile-soil contact surface is taken as the starting point In-depth analysis and determination can be used as the quantitative analysis of tangential stiffness factors.Using regression analysis to explore the relationship between the tangential stiffness of the contact surface and the impact of the regression model.Establishing a mathematical relationship between tangential stiffness and two types of influencing factors, through Matlab numerical analysis software, three-dimensional surface fitting, and then get the contact surface tangential stiffness variation and value method to analyze the contact surface tangential stiffness of the pile-soil system performance.