Abstract

The formation of rupture prism in the model retaining wall experiment with Binh Duong white clay backfill indicated that the rupture slip surface by applied surcharge is not unique. The shape and dimension of rupture slip depend on the dimension and process of surcharges. There are two types of rupture slip surface: the rupture slip plane and slip circle. In case of low or small increased surcharges the rupture surface is the slip plane, the transition from active to passive pressure occurs on the back of retaining wall and is attached to it as a block. The active force is changed in magnitude and direction due to the occurrence of the transition from active to passive pressure. In this paper the writer would like to propose one result of determination of active force applying on retaining wall in case of rupture slip plane based on model test results.