防灾减灾学报

基于Pasternak双参数地基模型，建立了断层错动作用下埋地管道的变形受力分析模型，并推导了相应的计算方法。通过算例分析了不同剪切荷载、抗弯刚度和地基反力系数等关键参数对埋地管道的变形、弯矩、剪力和管道周围土体反力分布规律的影响。研究表明：管道抗弯刚度和土体反力系数是影响管道的变形和受力的主要因素，在管道设计时应选择合适的抗弯刚度，并适度提高地基反力系数，可有效改善管道与土体之间的变形协调及受力性能。研究结果为埋地管道的抗断层设计提供了参数优化理论依据，对提升地下管线工程的灾变防控能力具有重要的工程价值。

By introducing the Pasternak two-parameter foundation model, the calculation method of deformation and stress of buried pipeline under fault dislocation is derived. The influence of different shear load, bending stiffness and foundation reaction coefficient on the deformation, bending moment, shear force and the distribution of soil reaction force around the buried pipeline is analyzed by an example. The analysis shows that the bending stiffness of the pipeline and the soil reaction coefficient have a great influence on the deformation and stress of the pipeline. The appropriate bending stiffness should be selected in the pipeline design, and the foundation reaction coefficient should be appropriately increased, which can effectively improve the deformation coordination and stress performance between the pipeline and the soil. The results establish a theoretical framework for anti-fault pipeline design optimization, advancing disaster prevention in underground engineering.