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在对我国高速铁路环境振动实测的基础上,分析了我国高速铁路环境振动特性。实测分析结果表明:对于350 km/h客运专线,高速动车组运行时铁路环境振动主频出现在40 Hz左右;对于250 km/h客运专线,高速动车组运行时铁路环境振动主频出现在25 Hz左右;货物列车运行所产生的铁路环境振动,其主频大多出现在12.5 Hz左右。地面环境振动传播规律为近场范围内距线路距离加倍,环境振动衰减2~3 dB。列车引起的地面振动随车速的提高而增大,与日本新干线的桥梁及其周围地面的振动进行的测试结果基本一致。
Based on the measurement of the environmental vibration of the high-speed railway in our country, the environmental vibration characteristics of the high-speed railway in our country are analyzed. The measured results show that the main frequency of railway environment vibration occurs when the high-speed EMU is operating at about 40 Hz for the 350 km / h passenger dedicated line. The main frequency of railway environmental vibration occurs when the high-speed EMU is operating at 250 km / h for the passenger dedicated line Hz; railway environment vibration caused by the operation of freight train mostly appears at about 12.5 Hz. The law of ground environment vibration propagation is that the distance from the line in the near field is doubled, and the environmental vibration is attenuated by 2 to 3 dB. The ground-induced vibration of the train increases with the increase of the vehicle speed, which is basically consistent with the test results of the vibration of the bridge and the surrounding ground of the Shinkansen in Japan.