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The Behavior of Stabilizing Piles installed in a Large-Scale Cut Slope  

Song, Young-Suk (Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources)
Hong, Won-Pyo (Department of Civil and Environmental Engineering, Chung-Ang University)
Publication Information
The Journal of Engineering Geology / v.19, no.2, 2009 , pp. 191-203 More about this Journal
Abstract
The effect of stabilizing piles on cut slopes is checked and the behavior of slope soil and piles are observed throughout the year by field measurements on the large-scale cut slopes. First of all, the behavior of the slope soil was measured by inclinometers during slope modification. Landslides occurred in this area due to the soil cutting for slope modification. The horizontal deformations of slope soil are gradually increased and rapidly decreased at depth of sliding surface. As the result of measuring deformation, the depth of sliding surface below the ground surface can be known. Based on the measuring the depth of the sliding surface, some earth retention system including stabilizing piles were designed and constructed in this slope. To check the stability of the reinforced slope using stabilizing piles, an instrumentation system was installed. As the result of instrumentation, the maximum deflection of piles is measured at the pile head. It is noted that the piles deform like deflection on a cantilever beam. The maximum bending stress of piles is measured at the soil layer. The pile above the soil layer is subjected to lateral earth pressure due to driving force of the slope, while pile below soil layer is subjected to subgrade reaction against pile deflection. The deflection of piles is increased during cutting slope in front of piles for the construction of soil nailing. As a result of research, the effect and applicability of stabilizing piles in large-scale cut slopes could be confirmed sufficiently.
Keywords
bending stress of piles; deflection of piles; field measurement; landslides; large-scale cut slope; stabilizing piles;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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