An experimental study of the impact of liquefaction-induced displacement on buried pipelines for buildings

Yung Yen Ko, Hung Wei Wang, Kun Yan Jheng

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

This study aimed to investigate the impact of soil liquefaction-induced displacement on buried pipelines critical to the serviceability of buildings, including those for potable water and natural gas. The emphasis was on the service lines connecting distribution mains and buildings due to their higher vulnerability. Two types of forced displacement tests were conducted on full-scale physical models of buried service lines. One simulated the uplift or subsidence of distribution mains as the soil surrounding the pipelines is completely liquefied, while the other simulated the building settlement due to partial loss of foundation bearing capacity in various conditions of surrounding soil. The longitudinal strains, deflection, and possible leakage of pipelines were monitored during these tests. The results showed that sufficiently large displacement could cause yielding and pulling out from the joint of the pipe. However, high pipe flexibility and joint strength provided adequate resilience of buried pipelines to these damage modes. The corrugated section of stainless-steel pipe was also verified to reduce strain in the pipeline. Additionally, when a pipeline was subjected to building settlement, liquefaction of surrounding soil or not led to different strain distribution and deflection along the pipeline. Local buckling of the pipe near the loaded end was induced in non-liquefied cases due to the combination of forced displacement and soil reaction. These findings give a better knowledge of the resistance performance of buried pipelines against liquefaction-induced displacement.

原文English
頁(從 - 到)3679-3701
頁數23
期刊Earthquake Engineering and Structural Dynamics
52
發行號12
DOIs
出版狀態Published - 2023 10月 10

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 岩土工程與工程地質
  • 地球與行星科學(雜項)

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