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Deformation Behavior and Slope Stability Effect of Anchored Retention Walls Installed in Cut Slope  

Hong Won-Pyo (Dept. of Civil & Environ. Engrg., Chung-Ang Univ.)
Han Jung-Geun (Dept. of Civil & Environ. Engrg., Chung-Ang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.9, 2004 , pp. 57-64 More about this Journal
Abstract
In order to establish the design method of anchored retention walls in cut slope, the behavior of anchored retention walls and backside ground needs to be investigated and checked in detail. In this study, the behavior of anchored retention walls was investigated by instrumentation installed in cut slope for an apartment construction site stabilized by a row of piles and anchored retention walls. When the anchor was installed at each excavating stages, the horizontal deflection of retention wall decreased, while the horizontal deformation of backside ground increased. The deflection of anchored retention wall decreased as the anchor was prestressed. The prestressed anchor farce has a great effect on the deflection of retention walls, while it has little effect on the deformation of its backside ground. The maximum horizontal deflection of anchored retention walls was developed between $1\%\;and\;4\%$ of excavation depth, which are $2\~8$ times larger than max. horizontal deflection of anchored retention walls including rock layers with backside horizontal ground. Meanwhile, SLOPILE (ver. 3.0) program analyzes the slope stability effects for anchored retention walls. As a result of analysis on slope stability analysis, the lateral earth pressure applied at anchored retention piles could be used as the mean values of empirical lateral pressures using anchored retention wall with horizontal ground at its backside.
Keywords
Anchored retention wall; Empirical lateral pressure; Excavation; Instrumentation; Slope stability effects;
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