Taking environmental vibration sensitive building—the dormitory building of Nanchang No.2High School side-going through Nanchang Metro Line 1as research background and based on the SIMPACK and ANSYS

the multi-body dynamic model of the train-track and the finite element model of the track-tunnel-soil layer-building were built

and then the vibration influence on the dormitory building from the subway operation were predicted.The results show that:the faster the train′s running speed

the bigger the peak floating of the wheel rail force is

but its mean is unchanged;and the closer the distance between the running line and the dormitory building

the greater the vibration influence is

and the higher the primary vibration frequency is;the vibration effect caused by uplink and downlink line both simultanuous running achieve to the maximum

at this time

the environmental vibration in dormitory building is beyond the night provision limit 4.43 dB

daytime provision limit 1.43dB;vibration isolation effect of the DT series fastener is general

and the elastic supporting block is superior to the DT series vibration fastener

the vibration isolation effect of the steel spring floating plate is greatest

so in this section

to isolate the vibration

the steel spring floating plate is in the best advice.