UPLIFT AND SETTLEMENT TEST DEPENDING ON SHAPE OF JACKING-PIPE UNDER THE RAILWAY

초록

Ground settlement or heaving displacement caused by dynamic behavior of penetrated pipe is directly dependent on ground condition beneath the track which has a significant effect on train operation speed and safety. Thus, it's necessary to analyze the cause of ground behavior in evaluating the effect of non-open cut method on trackbed as well as to identify the relationship between the top soil excavated and deformation distribution. Hence, in this study, appropriate scale model was selected considering local geographical features and operation characteristics of high speed rail and traditional train and the ground settlement patterns were grouped by category and finally, displacement patterns were compared and evaluated using a certain criteria of ground loss based on excavation progressed. To that end, a scale model was formed depending on compaction degree and the characteristics of the entire ground behavior by friction resistance around the pipe when pipes were penetrated into the ground were monitored.