ANALYSIS OF CAUSAL FACTORS GENERATING LARGE-SCALE DEFORMATION PATTERNS IN BURIED PIPELINE UNDER THE INFLUENCE OF LATERAL FLOWS BY LIQUEFACTION

摘要

The deformation of gas pipelines exposed to lateral ground displacement due to liquefaction was analyzed by use of the shell/beam hybrid modeling proposed by Yoshizaki et al. The influence of such parameters as ground constraint, displacement incident angle, angle of bent pipe, and pipe diameter were investigated. Standard buried pipe models were then proposed for use in designing earthquake-resistant buried pipes that may be exposed to lateral flow due to liquefaction.