LARGE-SCALE SEISMIC RESPONSE ANALYSIS OF A PIPELINE HANGING ON A BASE-ISOLATED BRIDGE USING THE FEM-DEM COMBINED METHOD

Abstract

 The present paper examines the applicability of the FEM-DEM combined method for the large-scale seismic response analysis of a pipeline hanging on a base-isolated bridge. In particular, the seismic response analysis of a steel pipeline used as a telecommunication cable conduit was conducted and its dynamic large deformation and fracture behavior was determined. From the analysis results, an effective countermeasure is proposed, which involves the use of an expansion joint and a separation preventer at the screw joint of the steel pipeline.