Vulnerability assessment of underground pipeline under seismic load based on holistic risk analysis approach
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The vulnerability assessment of underground pipelines is significant for risk assessment system of lifeline anti-seismic engineering.Established an assessment model as a catastrophic factor sieving tool based on the holistic risk analysis approach and the pipeline risk assessment diagram as well,and combining with statistics-based forecasting tools,obtained a underground pipeline vulnerability estimating cacutation formula under the seismic loads.The proposed model was preliminarily verified by the pipeline behaviors checked in Haicheng and Lijiang earthquakes.And the study results were in good agreement with the fact.It may scientifically offer suggestion to government for disaster relief.