Ground Track Response Behaviour Induced by Train Speed Using Non-Destructive Seismic Wave Method

Abstract

Ground track dynamic response analysis is a non-destructive seismic method utilized to investigate the influence of ground-borne vibrations induced by train’s speed on railway track. This research focuses to evaluate the responsive of ground towards vibration induced by moving train. To facilitate this study, a non-destructive seismic wave approach was used with a novel application, the Sirius M instrument, to determine the peak vertical acceleration created by varied running speeds at different railway track locations. Electric Train Service (ETS) and Commuter (6 couches) of passenger trains with 140km.hr-1 and 120km.hr-1 of maximum speeds were utilized for this research. The outcome demonstrates that vertical acceleration data signalized from transition wave generated by passing Electric Train Service (ETS) with maximum 140km.hr-1 speed train is higher than commuter with 120km.hr-1 speed train which are 1.935m.s-2 and 1.051m.s-2 respectively. The peak acceleration at the stable track, KM21, is higher than the settlement-vulnerable track, KM20.75, with values of 6.565 m.s.-2 and 1.935 m.s.-2, respectively, according to an analysis of vertical acceleration data based on several track locations corresponding to the ETS speed. The analysis of results indicated ground-borne vibration parameters are influenced by the speed of train and different type of railway track’s embankment conditions. Additionally, this on-site ground response assessment may be helpful as a substitute method to establish the soil stiffness, which indicates any possibly problematic ground susceptible to railway track settlement.