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Evaluation of Dynamic Increment Component of Earth Pressure behind the Retaining Walls

Publication Date : 10/07/2015



Author(s) :

A.D.Maskar , S.N.Madhekar , D.R.Phatak.


Conference Name :
4th International Conference on Recent Trends in Engineering & Technology(ICRTET-2015) July 2-4,2015 Organized by SNJB's KBJ College of Engineering,Chandwad,Nashik,Maharashtra,India



Abstract :

Retaining wall is one of the important structures in Civil engineering. During earthquake loading, earth pressure gets increased and those walls may fail due to excess deformation if these walls are not designed for earthquake. Retaining wall damages are ubiquitous throughout previous earthquakes such as the Northridge, Sichuan, Loma Prieta, Chi Chi and L’Aquila in Central Italy etc. At present there are many methods available to evaluate earth pressure behind retaining walls in static and dynamic condition do not incorporate the effect of wall movement on the earth pressure. Dubrova was the first who considered such effect to evaluate active earth pressure behind walls. Till date, Dubrova’s method is used for cohesion less soil, with paper briefly explains the method of calculation of dynamic increment component of earth pressure which have been introduced in revised IRC:6 in IS:1893-1984 pertaining to dynamic increment. In the current study, the dynamic increment component has been evaluated by M 2014 code. IRC:6-2014 code shows parabolic dynamic increment distribution behind the retaining walls with zero intensity at top and bottom of the wall. The maximum dynamic increment is 10.96 kPa according to Dubrova’s method whereas it is 11.61 kPa according to IRC:6-2014. Hence, Dubrova’s method gets validated.


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