Open AccessApplication of admissible stress fields for computation of passive seismic force in retaining walls
Author(s) -
Faradjollah Askari,
Arash Totonchi,
Orang Farzaneh
Publication year - 2012
Publication title -
scientia iranica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.299
H-Index - 51
eISSN - 2345-3605
pISSN - 1026-3098
DOI - 10.1016/j.scient.2012.06.008
Subject(s) - dimensionless quantity , discontinuity (linguistics) , limit analysis , wedge (geometry) , computation , coulomb , upper and lower bounds , stress field , stress (linguistics) , lateral earth pressure , magnitude (astronomy) , inertia , limit (mathematics) , mechanics , structural engineering , mathematics , physics , mathematical analysis , geology , classical mechanics , geotechnical engineering , finite element method , geometry , engineering , linguistics , philosophy , algorithm , quantum mechanics , astronomy , electron
In this paper, the lower-bound techniques of limit analysis are applied to obtain lateral earth pressures of rigid retaining walls subjected to earthquake forces. The well-known Mononobe–Okabe analysis is a direct modification of the coulomb wedge analysis. In this analysis, the earthquake effects are replaced by a quasi-static inertia force whose magnitude is computed on the basis of the seismic coefficient concept. This paper is describing an analytical solution to investigate the lateral force affect on retaining walls, using mathematical relations based on a lower bound limit analysis method. The lower bound of the exact solution can be obtained by use of different admissible stress fields in different regions of the media divided by stress discontinuity surfaces. This process is included in calculation of the direction and magnitude of passive lateral earth pressure. Numerical results of the proposed algorithm are presented in some practical dimensionless graphs