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Author:

Zhang, Z.-Z. (Zhang, Z.-Z..) | Jia, K.-M. (Jia, K.-M..) | Xu, C.-S. (Xu, C.-S..) | Pan, R.-J. (Pan, R.-J..)

Indexed by:

EI Scopus

Abstract:

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 rm(mean period), can indicate the influence of ground motion on the failure response of liquefaction site-pile-structure system to a certain extent. © 2023 Academia Sinica. All rights reserved.

Keyword:

Inclined liquefaction site Pulse ground motion Seismic response Correlation analysis Pile foundation Numerical simulation Ground motion parameters

Author Community:

  • [ 1 ] [Zhang Z.-Z.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Jia K.-M.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Xu C.-S.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 4 ] [Pan R.-J.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China

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Source :

Rock and Soil Mechanics

ISSN: 1000-7598

Year: 2023

Issue: 12

Volume: 44

Page: 3629-3638

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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