Abstract
Deformation behavior of buried pipelines subjected reverse fault action was investigated. Characteristics of ground-pipeline interaction (subgrade reaction) in case of the upward pipe movement relate with the ground were investigated by the centrifuge experiments.
Results show as follows. (a) Reaction force of cover soil is propotional to both pipe diameter and buried depth. (b) Coefficient of subgrade reaction is in inverse propotion to pipe diameter. (c) Coefficient of subgrade reaction has the maximum velue related with pipe displacement. (d) Maximum subgrade reaction of cover soil can be evaluated by the design fomula proposed in the Standard Practice of Seismic Dedign of Buried Pipeline on the Liquefable Ground, published by JGA.
