摘要
研究目的:京津城际铁路正式运营标志着我国铁路开始全面进入"高速时代"。随着铁路运行速度的提高,铁路沿线环境振动问题日益突显,因此,如何缓解由高速铁路所带来的环境振动影响,提高沿线居民生产生活质量,是目前迫切需要研究的课题。研究结论:本文通过建立车辆—轨道—路基—大地和大地—隔振屏障耦合振动模型,运用ANSYS大型有限元通用软件对5种地屏障,即空沟、夹心墙、刚性墙、排桩和三排蜂窝桩的隔振效果进行了研究。结果表明:三排蜂窝桩减振效果可达15dB左右、空沟为6～8dB左右、夹心墙、刚性墙和三排桩为5dB左右。
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 15 dB vibration can be reduced by using three - rows of the honeycomb WIB, reducing 6 - 8dB vibration by open trench and reducing 5 dB vibration by in - filled trench, stiff trench and three - rows of the piles respectively.
出处
《铁道工程学报》
EI
北大核心
2009年第1期1-6,共6页
Journal of Railway Engineering Society
基金
国家重点基础研究发展计划项目(2007CB416607)
江西省教育厅青年科学基金项目(GJJ09510)
华东交通大学校立科研基金资助(07GZ01)
关键词
高速铁路
大地振动
屏障
隔振
high - speed railway
ground vibration
barrier
vibration isolation
