An in-situ measurement was conducted at Shanghai metro interval to study the ground vibrations induced by normal operation of subway.The peak value and root-mean-square value of vertical vibrations were computed and the signal spectrum analysis was done.The vibration level was calculated by two different frequency weighting curves.A 2-D finite element analysis was made to simulate the measurement phenomenon.The measurement results show that there was an amplified zone

the position of which is 15 meters away from the tunnel center.Compared with the W frequency weighting curve

the Wk frequency weighting curve weighs heavier on the influence of the human body in the frequency range from 10 Hz to 80 Hz.The vibration level value is 3.2 dB more than the case using W frequency weighting curve.The simulated phenomena are in agreement with the measurement results.