In this paper

the seismic responses of inclined liquefaction site-pile-structure system under near-field pulsed and non-pulsed ground motion were studied. Firstly

a finite element model of inclined liquefaction site-pile-structure system was established based on the finite element platform OpenSees

and the reliability of the numerical model was verified by comparing with the results of large-scale shaking table test. On this basis

the finite element model of typical inclined liquefaction site-pile-structure system was established

the seismic response laws of the system under near-field pulsed and non-pulsed ground motion were compared and analyzed

and the correlation analysis between ground motion intensity index and seismic response was carried out. The results show that compared with the non-pulsed ground motion

the residual displacement of the site increases obviously under the near-field pulsed ground motion

especially at the top of the loose sand layer

which increases by about 40%. Pile bending moment and pile residual displacement increase significantly

especially at the pile top. The correlation between the ground motion intensity index and the response under non-pulsed ground motion is higher than that under pulsed ground motion. Three strength parameters with good correlation

i.e. PGV/PGA (peak ground velocity/ peak ground acceleration)

AI (Arias intensity) and T(mean period)

can indicate the influence of ground motion on the failure response of liquefaction site-pile-structure system to a certain extent.