Extension of Mononobe-Okabe Theory to Evaluate Seismic Active Earth Pressure Supporting c-φ Backfill

 

Sima Ghosh

Assistant Professor, Civil Engg. Department, National Institute of Technology.

Satarupa Sengupta

Satarupa Sengupta M.Tech Student, Civil Engg. Department, National Institute of Technology. Agartala, PIN – 799055
e-mail: satarupas@yahoo.com

 

ABSTRACT

An effort is made to evaluate the formulation of seismic active earth pressure behind a non-vertical retaining wall supporting c-φ backfill. The formulation is prepared to get a single critical wedge surface for simultaneous action of weight, surcharge, cohesion and adhesion. The success of any retaining structure involves the awareness of seismic active earth pressure. The effect of various parameters viz. internal friction (φ), angle of wall friction (δ), wall inclination angle (α),backfill inclination angle (i), cohesion (c), adhesion (ca), seismic accelerations (kh, kv), surcharge loading (q), unit weight (γ), height (H) are also taken into account to provide the variation of seismic active earth pressure coefficient.

Keywords: seismic active earth pressure, pseudo-static, retaining wall, c-F backfill, single wedge.

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