Upper-bound limit analysis on seismic rotational stability of retaining wall

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• 作者：Da Huang ; Jie Liu
• 关键词：limit analysis ; earthquake ; retaining wall ; critical acceleration ; rotational stability
• 刊名：KSCE Journal of Civil Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：20
• 期：7
• 页码：2664-2669
• 全文大小：319 KB
• 刊物类别：Engineering
• 刊物主题：Civil Engineering
  Industrial Pollution Prevention
  Automotive and Aerospace Engineering and Traffic
  Geotechnical Engineering
  
• 出版者：Korean Society of Civil Engineers
• ISSN：1976-3808
• 卷排序：20

文摘

This paper proposed a theoretical model of seismic rotational stability of gravity retaining wall, using the multi-block upper-bound method. In this model, the cohesionless backfill in the failure zone was meshed into an infinite number of rigid blocks parallel to planar failure surface, in order to establish the energy dissipation equation of the wall-soil system based on the kinematically admissible velocity field. The critical acceleration due to earthquake-induced pseudo-static inertial force was derived through the energy dissipation equation. The model explicitly took account of the height, shape, and unit weight of the retaining wall, the properties of the backfill soil (i.e., unit weight and angle of shearing resistance) and the friction angle of the wall-soil interface. The proposed upper-bound solutions are consistent with those obtained by the limit equilibrium theory by Zeng and Steedman (2000), whereas in this method the vector of earth pressure need not to be assumed.