Author: Özcan TAN, Bayram Ali UZUNER
Publishing Date: 2005
Volume 20 Issue 3
In this study, passive states developed by a horizontal movement of a rigid model retaining wall in sand were experimentally investigated. The amounts of the necessary lateral movements in order to create passive cases and the first phase of the failure surfaces were determined by using stereo-photogrammetric technique. The inner dimensions of the experiment tank were 9.8 cm (width), 70 cm (length) and 40 cm (height). The sides of the tank were made of 8 mm thick glass plates. The relative density of the poorly graded sand deposited in the tank was varying from loose to dense. The model retaining wall was moved against the soil step by step with a hand operated mechanism. In each steps, photographs were taken with a camera. The photographs were evaluated in stereoscope and thus occurring time of passive case was determined. Consequently, some criteria were given for creating passive state. Experimental results were compared with the previous works.
Key Words: Lateral earth pressure; model retaining wall; relative density, passive state; stereo-photogrammetric technique.