防灾减灾工程学报2012，Vol.32Issue(6)：672-677,6.
高速铁路隔振沟隔振效果的现场测试与分析
In-situ Test and Analysis of Isolation Effect of Vibration Isolating Trench for High Speed Railways
摘要
Abstract
One trench for agricultural irrigation next to the Hu-Ning Intercity Railway viaduct section were tested and analyzed in order to achieve the effect of ground vibration isolation when CRH trains run on. The result shows that with decrease of train speed, the peak value of ground vibration velocity decreases and the main frequency of ground vibration heightens. The trench has lowpass filtering effect on ground surface vibration. The slower the train speed, the more apparent the effect of isolation, but the phenomenon that ground surface vibration increases before trench is more remarkable. When the length of trench is much greater than the length of train, the number of carriages has little effect on vibration isolation effect of the trench. When the railways are built, the department concerned should facilitate the coordination with nearby residents and department of agriculture, and the trench's length, depth, breadth and the distance to railway should be designed reasonably. And then the trench in addition to meet the need of irrigation, but also has marked effect on vibration isolation.关键词
高速铁路/地面振动/隔振沟/隔振效果/现场测试Key words
high speed railway/ ground vibration/ vibration isolating trench/ vibration isolation effect/ in-situ test分类
交通工程引用本文复制引用
毛昆明,陈国兴,张杨,洪小星..高速铁路隔振沟隔振效果的现场测试与分析[J].防灾减灾工程学报,2012,32(6):672-677,6.基金项目
江苏省自然科学基金项目(BK2008368)、中国地震局地震工程与工程振动开放实验室基金(2007A02)资助 （BK2008368）
