Reduction of ground vibration by means of ground improvement along a railway track

초록

The ground vibrations induced by high-speed train have drawn engineering attention in recent years, since high-speed trains are growing rapidly throughout Europe, East Asia, and North America. Deep mixing technology, that has a wide range of application in the construction industry, has been used to mitigate the detrimental effects of vibration caused by high-speed trains. Deep mixing is a ground modification technology that mixes in situ soil with a cementitious material to produce overlapped columns using specially designed equipment with paddles and/or augers. This paper aims to examine and synthesize the latest advancements when deep mixing technology is used as the countermeasure against vibration control. Excitation mechanism caused by a moving load that provides the basis for train induced vibration is discussed. The current state of practice to analyse and predict the response of treated ground based on the analytical and numerical solutions are presented along with a summary of field data. The rigorous numerical solutions with 3-D modelling capabilities have demonstrated effective tools to predict improvement effect of deep mixing as a countermeasure for vibration control.