The main aim of this research was to investigate the mechanism of deformation of buried pipe under traffic moving load and the suitability of the modified Spangler-Iowa formula, coupled with the Boussinesq theory of load transmission through elastic media in predicting the deformation of these buried structures. This study employed reduced-scale physical model tests in a geotechnical centrifuge, numerical back-analysis using ABAQUS software and a numerical prediction for a hypothetical case. The hypothetical case consisted of a steel pipe buried in cohesionless soil under moving surface loads. Nine centrifuge tests were carried out for three different embedment ratios in dense, medium and loose sand. The tests results demonstrated that the formulas used for pipeline projects, the modified Spangler-Iowa formula together with the Boussinesq theory, are somewhat conservative for all densities analyzed and that the degree of conservatism increases with both embedment ratio and with the stiffness of the soil the pipe rests.

这项研究的主要目的是研究交通移动荷载作用下地下管道的变形机理以及改进的Spangler-Iowa公式的适用性，并结合Boussinesq理论通过弹性介质传递载荷来预测这些地下结构的变形。 。这项研究在岩土离心机中进行了缩小规模的物理模型测试，使用ABAQUS软件进行了数值反分析，并对一个假设的案例进行了数值预测。假设的情况是，钢管在移动的表面载荷下埋没在无粘性的土壤中。在稠密，中等和疏松的沙子中对三种不同的嵌入率进行了九次离心测试。测试结果表明，用于管道项目的公式，改进的Spangler-Iowa公式以及Boussinesq理论，