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| Research on the Application of Ground Barrier in Reducing the Vibration Along High——speed Railway |
| LUO Kun，LEI Xiao—yan，LIU Qing—jie |
| East China Jiaotong University，Nanchang，Jiangxi 330013，China |
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Abstract Research purposes：Operation of Beijing—Tianjin intercity railway indicates that the”High—speed era”has come to China．However，with the increase of the train speed，the environmental vibration along the railways has become more serious．Therefore，it is urgent to do the study on how to reduce the vibration caused by high—speed railway for the purpose improving the life quality of the people living along the railway．
Research conclusions：By means of establishing models of the vehicle—track—roadbed—ground coupling system and the ground—barrier coupling system．the studies have been done on the vibration isolation effects of five barriers，i．e．， open trench，in—filled trench，stiff trench，piles and three—rOWS of honeycomb WIB，with the universal finite— element software ANSYS．The results show that 1 5 dB vibration can be reduced by using three—rOWS of the honeycomb WIB，reducing6—8dB vibration by open trench and reducing 5 dB vibration by in—filled trench，stiff trench and three—rOWS of the piles respectively．
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Received: 06 October 2008
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2009, Vol. 26 
