Experimental study on vibration characteristics of complex building during metro train running

Through field test,this paper studied environmental vibration characteristics of building structure integrated with subway structure caused by subway train passing from two angles of time domain and frequency domain. The results showed that vibration amplitude of integrated building structure decreases with the increase of vibration sources distance and transverse vibration response amplitude is about 0. 8 times vertical vibration response amplitude under the subway train loading,vibration frequency distribution characteristics of integrated building superstructure is basically consistent with subway line structure,which is mainly in the range of 20 to 80 Hz,transverse environment vibration level of integrated building structure is lower than vertical environment vibration level on the whole and both are on the same level,transverse environment vibration level is higher than vertical environment vibration level in some special frequency range,and the influence of transverse vibration on people's life and work cannot be ignored.