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http://dx.doi.org/10.7843/kgs.2016.32.12.79

Analysis of Cyclic Loading Transferred Mechanism on Geosynthetic-Reinforced and Pile-Supported Embankment  

Lee, Sung-Jee (Univ. of Science and Technology (UST))
Yoo, Min-Taek (Korea Railroad Research Institute)
Lee, Su-Hyung (Korea Railroad Research Institute)
Baek, Min-Cheol (Univ. of Science and Technology (UST))
Lee, Il-Wha (Dept. of Advanced Infrastructure Research, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.12, 2016 , pp. 79-91 More about this Journal
Abstract
Geosynthetic-reinforced and Pile-supported (GRPS) embankment method is widely used to construct structures on soft ground due to restraining residual settlement and their rapid construction. However, effect of cyclic loading has not been established although some countries suggest design methods through many studies. In this paper, cyclic loading tests were conducted to analyze dynamic load transfer characteristics of pile-supported embankment reinforced with geosynthetics. A series of 3 case full scale model tests which were non-reinforced, one-layer-reinforced, two-layer reinforced with geosynthetics were performed on piled embankments. In these series of tests, the height of embankment and pile spacing were selected according to EBGEO (2010) standard in Germany. As a result of the vertical load parts on the pile and on the geosynthetic reinforcement measured separately, cyclic loads transferred by only arching effect decreased with strength geosynthetic-reinforced case. However, final loads on the pile showed no differences among the cases. These results conflict with previous studies that reinforcement with geosynthetics increases transfer load concentrated on piles. In addition, it is observed that the load transferred to pile decreases at the beginning of cycle number due to reduction of arching effected by cyclic loading. Based on these results, transferred mechanism for cyclic load on GRPS system has been presented.
Keywords
GRPS embankment; Cyclic loading; Arching effect; Geosynthetic; Transferred load;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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