Abstract：The measurement and analysis of environmental vibration in plain land is of great significance for the construction of advanced measurement laboratory, which can be used to guide the applicability of the construction site selection of advanced measurement laboratory and the design of environmental vibration control. Taking the location of the advanced measurement experiment area of NIM as an example, the environmental excitation method is used to test the environmental vibration of the advanced measurement experimental area, and the 1/3 octave band analysis method is used to process the velocity time history data. The results show that: under steady-state conditions, the vibration index of the plot in the frequency band of 1~100Hz is lower than VC-F standard, but the maximum vibration velocity in the frequency band of 12.5~20Hz is close to or greater than VC-G standard. It is found that the vibration source in this frequency band comes from the random vibration caused by the loading and unloading of goods at the container terminal between 21:00 and 10:00 the next day, and the removal of the container terminal will help to meet the requirements of the laboratory vibration control standard VC-G. affected by the operation of a large bus under the specified conditions, the best setback distances required by the environmental vibration standards VC-G, VC-F and VC-E in the frequency band of 8~25 Hz are 195m, 182m and 160m respectively. The test and analysis of the environmental vibration of the surrounding road traffic under different conditions can accurately determine the best setback distances for the construction of different environmental vibration standards laboratories.
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2021, Vol. 42 
