The research object is long-span continuous bridge which is effected by earthquakes and train load simultaneously

a numerical model of coupled vibrations between vehicles and highway long-span continuous bridge involved in soil foundation under oblique incidence of seismic wave was established by finite element software.The dynamic respones of the bridge were calculated and analyzed through altering the angle of incidence of seismic waves and the train speed.The results show that seismic wave incident angle has a significant effect on the dynamic response of the bridge

with increase of incident angle

the vertical displacement and velocity of mid-span increase constantly;at the same time

the train speed has a relatively small effect on the dynamic response of the bridge in the earthquake

and the dynamic response of the bridge do not increase always with increase of train speed

but reach maximum at a certain speed.The vertical displacement of reference points increases significantly and the moment at mid-span reduces when considering soilstructure interaction in calculation.