Seismic Response of a Buried Pipeline in Sandy Soil Layer: Numerical Approach
Seismic Response of a Buried Pipeline in Sandy Soil Layer: Numerical Approach
Researches from the past indicated that buried pipelines are at higher risk to failure when exposed to seismic conditions because of the high probability of destruction, damage, and disruption under such conditions. In this study, earthquake time-history analyses were carried out on a buried pipeline of API 5L Grade X70, which is commonly used for oil and gas transmission. To investigate the influence of earthquakes on the buried pipeline, a set of numerically created models were studied on a pipeline system buried in sandy soil with various peak ground acceleration (PGA) of 0.24g, 0.46g, and 0.77g. A systematic study is carried out to determine the soil displacement, strain, acceleration, and displacement of pipelines buried in two different soil conditions (loose sand and dense sand). Analyses are also being done on the acceleration response of loose sand and dense sand. Overall, the research suggests that dense sand de-amplify the original ground motion while loose sand amplify it. The findings show that earthquakes are more likely to cause damage to pipeline if they are buried in loose sand. Therefore, the current study provides useful information that should be included in the seismic design of buried pipelines.
S. Sahoo; BADAVATH NAVEEN
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
4. Geotechnical earthquake engineering
https://doi.org/10.53243/NUMGE2023-410
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