地埋管与土相互作用分析模型及其参数确定

对地埋管道结构分析，考虑管道与土的相互作用问题是非常必要的。其相互作用问题可归结为界面处接触应力的确定，为此，基于地埋管道受力特征的实测结果，建立了地埋管道与土的相互作用分析组合模型，并给出了模型参数的确定方法。由于管与土和管与基床的相对刚度对管土接触面上分布应力的影响显著，在确定其相互作用模型参数时，利用实测结果对其进行了修正，从而，将管道刚度的影响融入到相互作用分析模型中。

Analytical model and parameters determination of interaction between buried pipe and soil

Its necessary to consider interaction between buried pipe and soil when analyzing its structure between pipe and soil, which comes down to the determination of contact stress distribution on the interface. Thus, on the basis of measured data of stress characteres of buried pipe, a composite model for analyzing interaction between pipe and soil and a method for determination of its related parameters are presented. For the apparent effect of relative stiffness between pipe and soil as well as that between pipe and foundation on distributed stress on interface between pipe and soil, the paper adjusts parameters of the model by taking use of measured data. So influence of pipe stiffness can be taken in consideration in this interaction model as a result.