350km/h高速铁路不同线路形式处环境振动测试分析

Environmental Vibration Test and Analysis of Different Line Forms of 350 km/h High-speed Railway

振动是高速铁路运营期的主要环境污染形式之一。为考察350 km/h高速列车运行状态下不同线路形式处的环境振动水平,对京津城际高速铁路某车站北京端附近路堤、桥梁、路桥过渡段的列车运行时环境振动进行测试分析。结果表明,在路堤、桥梁、路桥过渡段3种线路形式中,列车通过路堤区段所产生的环境振动最大,通过路桥过渡段所产生的环境振动最小。我国现行的高速铁路路堤和桥梁环境振动预测公式的预测值偏高。

Vibration is one kind of environmental pollution forms in high-speed railway operation.In order to investigate the environmental vibration level of different line forms of high-speed railway at 350 km/h in operation,the environmental vibration is tested and analyzed on three line forms of Beijing-Tianjin Inter-City high-speed railway,which includes subgrade,bridge and bridge-subgrade transition section.The result shows that among the three line forms,high-speed train passing on the embankment generates maximum environmental vibration,while passing on the bridge-embankment transition generates the minimum.The value of environmental vibration predicted by the current prediction formula of China high-speed train is higher than the measured value both for the embankmen and the bridge.