东南大学学报（自然科学版）2012，Vol.42Issue(5)：988-993,6.DOI:10.3969/j.issn.1001-0505.2012.05.034
地铁运行诱发的环境振动数值模拟与模型预测
Numerical simulation and model prediction for environmental vibrations induced by metro operation
摘要
Abstract
In order to study the influence factors and laws of environmental vibrations induced by metro operation, and to establish the prediction model of environmental vibrations, the influence of train speed, soil properties and tunnel depth on metro-induced environmental vibrations were investigated through three-dimensional vibration simulation model of train, track, tunnel and foundation soil, and the numerical results were compared with part of the field measurement data. Furthermore, based on the regression analysis, a prediction model for metro-induced environmental vibration was presented. The study results show that, the established numerical simulation method and the obtained prediction model can properly reflect the actual metro-induced environmental vibration. The results also indicate that with increasing train speed, the vertical vibration acceleration on ground increases, and the farther the distance away from the metro line, the more pronounced the speed influences. Meanwhile, with increasing distance from metro lines, or increasing predominant period of soil foundation, or increasing tunnel depth, the vertical vibration acceleration on ground decreases, and the greater the predominant period of soil foundation, the faster the vibration attenuates.关键词
地铁/环境振动/有限元/预测模型Key words
metro/ environmental vibration/ finite element/ prediction model分类
建筑与水利引用本文复制引用
张鹤年,阳建强,孙广俊,肖军华..地铁运行诱发的环境振动数值模拟与模型预测[J].东南大学学报（自然科学版）,2012,42(5):988-993,6.基金项目
国家自然科学基金资助项目(51008158,51008257)、江苏省自然科学基金资助项目(BK2009466)、江苏省博士后基金资助项目(1101000115). （51008158,51008257）
