桂林理工大学学报2012，Vol.32Issue(3)：360-365,6.DOI:10.3969/j.issn.1674-9057.2012.03.014
清华大学精密仪器环境振动影响评价
Assessment of Environmental Vibration Impact on Precision Instruments in Tsinghua University
摘要
Abstract
Some precision instruments are installed in East Annex of Tsinghua University, to predict vibration impact of metro line 15 in the future. Field test for environmental vibration inside and outside East Annex of Tsinghua University (including vertical and two horizontal vibration acceleration and velocity) is performed. This paper analyzes and assesses actually environmental vibration impact on precision instruments caused by railway, metro and road traffic and propagation laws of ground vibration. When train passing Beijing-Baotou railway or/ and metro line 13, three-dimensional vibration magnitude can not meet the requirement of Titan, Tecnai, JEM TEM and AFM. Without train and metro passing but only road traffic, east-west horizontal vibration magnitude can meet the requirement of Titan TEM, but vertical and south-north horizontal can not. Vertical and south-north horizontal vibration magnitude can meet the requirement of JEM TEM but east-west horizontal can not. Three-dimensional vibration magnitude can meet requirement of Tecnai TEM and AFM. The peak and r. m. s. values of vertical and east-west horizontal ground vibration acceleration attenuate with the increase of distance to vibration sources and gradually slow down when the distance to Beijing-Baotou railway longer than 200 m. However, there is an amplification region of east-west horizontal vibration (above 40 Hz) within the range of about 50 ~ 80 m away from Beijing-Baotou railway.关键词
环境振动/振动影响/精密仪器和设备/电子显微镜/振动敏感/铁路/地铁/评价Key words
environmental vibration/ vibration impact/ precision instrument and equipment/ electron microscope/ vibration sensitivity/ railway/ metro/ assessment分类
通用工业技术引用本文复制引用
杨宜谦,尹京,刘鹏辉,董振升,姚京川..清华大学精密仪器环境振动影响评价[J].桂林理工大学学报,2012,32(3):360-365,6.基金项目
中日韩铁路技术合作研究项目(2011YJ93) （2011YJ93）
