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The Development of End-expanded Soil Nailing Method for Ground Reinforcement and its Behavior Characteristics  

Moon, Hongduk (Gyeongnam National University of Science and Technology, Dept. of Civil Engineering)
Jung, Youndug (Gyeongnam National University of Science and Technology, Dept. of Civil Engineering)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.3, 2013 , pp. 19-27 More about this Journal
Abstract
Recently, the natural and man-made slope collapses occur frequently because of sudden heavy rains. So, a variety of slope reinforcement methods have been developed and applied to failure slopes. Soil nailing method usage has been increased because of its workability and economic aspects. This method has been applied in combination with other slope stability methods. Soil nailing method is a kind of combinational structure of steel bar and cement grouting. This method uses skin friction between adjacent ground and cement grouting to stabilize the slope. In this study, End-expanded soil nailing method was developed. This method consists of steel bar and anchor body attached at the tip of the nail. During construction, the anchor body at steel bar tip is settled to the ground through the expanding action. In this study, field pull-out tests were performed for un-grouting soil nailing and grouting soil nailing. From the test results, a wedge force of End-expanded soil nailing method was analyzed. And the behavior characteristics of End-expanded soil nailing were studied.
Keywords
End-expanded soil nailing method; Wedge force; Soil nailing; Pull-out test; Prediction of pull-out resistance;
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  • Reference
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