Abstract When buried pipes are subjected to seismic waves, the leading cause of the failure of pipes is not inertial forces due to the deformation of foundation. If the pipe-soil dynamic contact could not be effectively simulated, it is difficult to properly achieve the large deformations of pipes under seismic action. This article examines the capabilities of three pipe-soil contact models to identify the best model. Firstly, the peak strains and displacements of theoretical calculations are compared with the results obtained from experimental tests, which confirmed the accuracy of test data. Goodman contact model, friction contact model, and spring-damping contact model are adopted and their simulation results are compared with the test results. Subsequently, it is proved that Goodman contact model is in good agreement with reality. By conducting comprehensive parametric studies, the interactional rules of soil pressure, frictional stress, strain, and relative displacement with depth and pipe diameter are investigated at interface of pipe and soil according to Goodman contact model. The direct curve representation of data for pipe-soil interactions is then obtained, which provides the basis for the data collection of pipe-soil interactions.

中文翻译：

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地震作用下Goodman接触单元的管土相互作用分析

摘要 埋地管道在受到地震波作用时，导致管道失效的主要原因不是地基变形产生的惯性力。如果不能有效模拟管土动力接触，就难以正确实现管道在地震作用下的大变形。本文检查了三种管土接触模型的功能，以确定最佳模型。首先将理论计算的峰值应变和位移与实验测试的结果进行对比，验证了测试数据的准确性。采用Goodman接触模型、摩擦接触模型和弹簧-阻尼接触模型，将仿真结果与试验结果进行比较。随后证明Goodman接触模型与实际吻合较好。通过综合参数研究，根据Goodman接触模型，研究了管土界面处土压力、摩擦应力、应变、相对位移与深度和管径的相互作用规律。从而得到管土相互作用数据的直接曲线表示，为管土相互作用数据的收集提供依据。