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VolF10-3Šª
”NF 1998”N
•ÅF 3143-3148•Å
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ŒfÚŽGŽi‰pjF THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
’˜ŽÒi‰pjF Keizo OHTOMO
ƒ^ƒCƒgƒ‹i‰pjF BURIED POWER CABLE PIPE PERFORMANCE DURING THE 1995 HYGOKEN NANBU EARTHQUAKE
´˜^i‰pjF Damage to buried transmission and distribution power cable pipes during the 1995 Hyogoken Nanbu earthquake is discussed. Relatively higher damage ratio is evolved in the areas of soil liquefaction accompanied by ground deformation and highly ground shaking. Some types of pipe having flexibility in joint and/or pipe body are found to have performed well during the earthquake. Using a numerical analysis, the effect of liquefaction-induced ground deformation on a buried pipes is examined. As a result, the analysis demonstrates that the degree of loosened joint can be generally correlated with the amount of permanent ground displacements.
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