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http://dx.doi.org/10.12814/jkgss.2018.17.2.001

Experimental Study on the Reinforcement Effect of Geogrid in Soft Ground Improvement  

Ham, Hyeon-Su (Department of Civil and Transportation Engineering, Geotechnical Engineering, Ajou Univ.)
Lee, Sang Duk (Department of Civil and Transportation Engineering, Geotechnical Engineering, Ajou Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.17, no.2, 2018 , pp. 1-7 More about this Journal
Abstract
The number of construction of roads and railroads in soft ground such as coastal areas and wetlands is getting increased. For this reason cases that soft ground improvement is applied are increasing. In general, many ground improvement methods consider only the working conditions at the time or only economy. But if the working condition and economy are taken into consideration together, the number of applicable construction method gets limited. In such a case, a ground improvement method using both the surface layer portion and the deep layer portion is applied. But the basic research on this is still insufficient in practice. Therefore, in this study the reinforcement effect of geogrid was investigated by carrying out the model test realizing the case in which soft surface ground improvement and depth improvement are simultaneously applied. And it was intened to understand the effect of the thickness of surface layer, the diameter and length of the improvement body on the reinforcement effect of geogrid. The result showed that the effect of the surface layer thickness is greater than the effect of the deep layer diameter. Moreover, when the surface layer is reinforced with a geogrid, the strength of the surface layer part is enhanced and this effect of a geogrid reinforcement caused the reduction of surface settlement.
Keywords
Soft ground; Geogrid; Raft foundation; Settlement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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