Volume 40 Issue 4
Aug.  2026
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XIE Zhongwu, ZOU Yi, ZHANG Shun, CAI Guozhen, LI Sen, SONG Laifu, CAI Jiayu. Dynamic response of buried pipelines in sandy foundations subject to near-fault pulse-type seismic loading[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 534-541. doi: 10.20265/j.cnki.issn.1007-2993.2025-0126
Citation: XIE Zhongwu, ZOU Yi, ZHANG Shun, CAI Guozhen, LI Sen, SONG Laifu, CAI Jiayu. Dynamic response of buried pipelines in sandy foundations subject to near-fault pulse-type seismic loading[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 534-541. doi: 10.20265/j.cnki.issn.1007-2993.2025-0126

Dynamic response of buried pipelines in sandy foundations subject to near-fault pulse-type seismic loading

doi: 10.20265/j.cnki.issn.1007-2993.2025-0126
  • Received Date: 2025-03-19
  • Accepted Date: 2025-11-11
  • Rev Recd Date: 2025-09-04
  • Publish Date: 2026-08-08
  • The liquefaction of saturated sandy soil under the influence of near-fault pulse seismic loading exacerbates the buoyancy and destruction of buried pipelines, posing a serious threat to their long-term safe operation. To investigate the dynamic response of buried pipelines under near-fault pulse seismic loading, this paper proposes a method for generating non-stationary near-fault seismic motion time histories based on the spectral-stochastic function method. Based on the generated near-fault pulse seismic motion, the liquefaction mechanism and dynamic response of buried pipelines in sandy soil foundations under near-fault pulse seismic loading are systematically studied, and the differences from the dynamic response of buried pipelines under non-pulse seismic loading are analyzed. The results show that the synthesized seismic motion containing low-frequency pulses can effectively simulate the pulse characteristics of near-fault seismic motion; under seismic loading, the rise in pore water pressure and the loss of effective stress in the soil lead to soil liquefaction, causing pipeline drift and buoyancy. The pulse-type seismic loading has a greater impact on the dynamic response of the pipeline, causing greater damage and posing a serious threat to the safe operation of the pipeline.

     

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