噪声与振动控制2019，Vol.39Issue(1)：146-150,5.DOI:10.3969/j.issn.1006-1355.2019.01.028
成渝高速铁路某高架桥段地面三向振动特性分析
Tri-directional Measurements and Analysis of the High-speed Train induced Ground-borne Vibration on a Viaduct of Chengdu-chongqing High-speed Railway
摘要
Abstract
Ground-borne vibration induced by the high speed railway operation is one of the major environmental problems. Previous studies mainly focus on the vertical vibration with the horizontal vibration ignored. In order to study the tri-directional ground-borne vibration of a bridge structure, a field measurement is carried out in a viaduct section of Chengdu-Chongqing high speed railway. First of all, the tri-directional vibration characteristics of time history and frequency spectrum are examined in time domain and frequency domain respectively. Then, the propagation characteristics of the weighted and plain root-mean-squares (RMS) of accelerations in the three directions are investigated. The results demonstrate that the weighted RMS of acceleration of the vertical vibration is greater than that of the horizontal vibration. However, the plain RMSs of accelerations of both the longitudinal and lateral vibrations are greater than that of vertical vibration. Therefore, the horizontal vibration should not be neglected when analyzing the propagation characteristics of the ground-borne vibration induced by high-speed railway. Moreover, the vertical weighted acceleration can play a dominant role when evaluating the environmental effect of high-speed railway vibration.关键词
振动与波/高速铁路/高架桥/现场振动测试/三向振动Key words
vibration and wave/high-speed railway/viaduct/in-situ vibration measurement/tri-directional vibration分类
交通工程引用本文复制引用
彭也也,贺玉龙,梅昌艮,周青..成渝高速铁路某高架桥段地面三向振动特性分析[J].噪声与振动控制,2019,39(1):146-150,5.基金项目
国家自然科学基金资助项目(51478397) （51478397）
