FIELD MEASUREMENT AND ANALYSIS OF ENVIRONMENTAL VIBRATION CAUSED BY HIGH-SPEED RAILWAY IN SEASONAL FROZEN AREA
In order to study the applicability of the evaluation method of environmental vibration in seasonal frozen area caused by high-speed railway in winter and summer,field observation in Longfeng wetland section of Har-bin-Qiqihar high-speed railway in winter and summer is carried out,and the data in time domain and frequency do-main is analyzed.The results show that the acceleration time history of each measuring point in winter and summer shows a trend of rapid attenuation first and then slow attenuation with the increase of the distance from the center of the pier,and the acceleration amplitude of 0～15m in summer is faster than that in winter.The peak frequency of the near-orbit is 58 Hz in winter and 47 Hz in summer.This study may provide the reference for the site selection of roads and bridges in seasonal frozen soil sites.
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