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The Lateral Earth Pressure Distribution of the Earth Retaining Structure Installed in Colluvial Soil  

Hong, Won-Pyo (Department of Civil and Environmental Engineering, Chung-Ang univ.)
Yea, Geu-Guwen (Dept. of R&D, Sambu Construction Co., Ltd.)
Publication Information
The Journal of Engineering Geology / v.18, no.4, 2008 , pp. 433-437 More about this Journal
Abstract
It's essential to build an earth retaining structure at the beginning and end point of a tunnel constructed in a colluvium area. A large scale of colluvial soil may cause a problem to the stability of the excavation ground. An excavation in colluvium has different behavior characteristics from those in a sandy soil due to unstable elements and needs counter measures for it. There are few systematic research efforts on the behavior characteristics of an earth retaining structure installed in colluvial soil. Thus this study set out to collect measuring data from an excavation site at the tunnel pit mouth in colluvium and set quantitative criteria for the safety of an earth retaining structure. After comparing and analyzing the theoretical and empirical earth pressure from the measuring data, the lateral earth pressure distribution acted on the earth retaining wall was suggested.
Keywords
colluvium; earth retaining structure; empirical earth pressure;
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