A two-dimensional finite element model for typical nodes of a underground utility tunnel in the urban area was established

and seismic response analysis were carried out for different seismic waves with different peak accelerations

different seismic waves with the same peak acceleration

and with or without the consideration of contact effect between soil and structure

respectively.The results show that:（1）under the action of different seismic waves with different acceleration peak values

the lateral displacement

peak acceleration and peak stress of node increased with the increase of peak value in earthquake wave;（2）under the action of different seismic waves with the same acceleration peak value

the spectral characteristics of seismic waves influenced the seismic response of node significantly;and（3）contact effect between soil and structure influenced the seismic response of node significantly.