As critical lifeline projects, complex geological conditions affect urban buried pipelines, making their seismic safety particularly important. This study focused on a high-pressure gas pipeline project in a city to establish a static and dynamic joint analysis model of the pipeline foundation interaction system using ANSYS software. Considering various working conditions, the seismic response analysis of high-pressure pipelines under different laying methods, changes in buried depth, and bending angles was carried out. The results show the radial deformation peak of the deeply buried pipeline under the action of earthquake increases by 106.17%, which is more vulnerable to damage. The depth of soil cover significantly impacts the dynamic response of buried pipelines. Pipes should be buried shallowly, while meeting the minimum depth of soil cover and other specifications. The two 18 degrees bends are in the peak area of axial high strain, and the buried pipelines are more prone to stress concentration at the large angle bends, which should be primarily monitored. The research results can provide references for the seismic safety analysis of buried high-pressure gas long-distance pipelines in similar urban settings.

来源平台：INDIAN GEOTECHNICAL JOURNAL