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http://dx.doi.org/10.12814/jkgss.2013.12.2.055

An Experimental Study on the Settlement Characteristics of the Corner of Earth Retaining Wall According to the Ground Excavation  

Yoon, Won-Sub (Dept. of Civil Engineering, The University of Suwon)
Cho, Chul-Hyun (Bokang Engineering)
Cho, Young-Kweon (Korea Rural Community Corporation)
Chae, Young-Su (Dept. of Civil Engineering, The University of Suwon)
Publication Information
Journal of the Korean Geosynthetics Society / v.12, no.2, 2013 , pp. 55-66 More about this Journal
Abstract
The experiment of model soil structures has been executed for the soil retaining wall in various conditions of excavation, in this study, to analyze the behavior of the corner of opening. The ground for experiment has been constituted with the sandy soil of relatively loose density, the construction condition has been divided into the opening length of corner, embedded depth, existence of strut, etc., and the excavation has been carried out for 4 stages in total. The behavior characteristics at the corner of opening area has been verified by concentrate analysis of the displacement of wall and the subsidence of ground surface, for each construction and excavation condition, using the measuring instrument mounted inside the model soil structure. In the result of experiment, it has been analyzed that the opening area of corner is unstable structurally compared to the linear area, as it shows that the wall displacement and subsidence of ground surface have been increased when the opening length of corner gets longer. The longer the embedded depth, ground surface settlement of coner was decreased 40%. To apply deeper embedded depth than designed estimate was an advantage in the safety. As a result of the analysis of coner behavior with added struts, maximum surface settlement and maximum horizontal displacement was evaluated 40% and 30%, respectively. Hence increased embedded depth with the added struts in coner edge was effective in the safety.
Keywords
Retaining wall; Soil structure experiment; Coner area length;
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