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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 3    March 2016

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Seismic response analysis of GRPS embankment under oblique incident P wave
GAO Xin-jun(郜新军), QIAN Hui(钱辉), GUO Yuan-cheng(郭院成), WANG Fei(王非)

School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

Abstract:In order to investigate the seismic performance of geosynthetic reinforced and pile supported (GRPS) embankment under seismic loads, an input method for three-dimensional oblique incidence of P wave was proposed. This method is based on the explicit finite element method while considering the viscous-spring artificial boundary (VSAB) condition. Using the proposed method, a numerical study was conducted, and the influence of oblique incidence on the seismic response of GRPS embankment under the oblique incident P waves was analyzed. The results indicate that in comparison with vertical incidence, the oblique incidence can significantly increase the displacement, velocity and acceleration of key locations in the GRPS embankment. The existence of geosynthetics can alleviate the impact of seismic load on the response of the embankment to a certain degree. Moreover, the number of reinforcement layers and modulus of geogrid also greatly influence the seismic performance of GRPS embankment.

 

Key words: geosynthetic reinforced and pile supported embankment; oblique incident waves; explicit finite-element model; seismic response

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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