防灾减灾工程学报2012，Vol.32Issue(3)：267-273,7.
沪宁城际铁路高架桥段CRH动车组运行引起的地面振动现场测试与分析
In-situ Testing and Analysis of Ground Vibration Caused by CRH Trains Running on Viaduct of Hu-Ning Intercity Railway
摘要
Abstract
Based on the measurement of the vertical velocity and acceleration caused by CRH trains running on viaduct of Hu-Ning Intercity Railway, the characteristics and propagation attenuation rule of the ground vibration are analyzed. The result shows that the main frequency of ground vibration caused by the CRH trains running is less than 70 Hz, which belongs to low frequency vibration. The peak value of ground vibration velocity and acceleration decreases with the increased distance between the ground surface and the viaduct. The ground vibration attenuates significantly when the distance is within 20 m. The peak value of ground vibration increases with increasing train speed. The number of carriages has no obvious effect on the peak value and main frequency of ground vibration. The ground vibration caused by the CRH trains running has little effects on general buildings. However, when the train speed is about 300 km/h, the peak value of ground vibration velocity exceeds the permissible value of office rooms and other public buildings, and when the train speed is about 200 km/h, the peak value of ground vibration velocity exceeds the permissible value of residences. Compared with measured ground vibration value of other high-speed railways , the ground vibration intensity caused by CRH trains running on viaduct of Hu-Ning Intercity Railway is relatively low.关键词
沪宁城际铁路/CRH动车组/高架桥/地面振动/现场测试Key words
Hu-Ning intercity railway/ CRH trains/ viaduct/ ground vibration j in-situ testing分类
建筑与水利引用本文复制引用
毛昆明,陈国兴,张杨,洪小星,肖军华..沪宁城际铁路高架桥段CRH动车组运行引起的地面振动现场测试与分析[J].防灾减灾工程学报,2012,32(3):267-273,7.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项目(2007A02)资助 （BK2008368）
