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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Geosynthetic Society
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Journal DOI :
Korean GeoSynthetics Society
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Volume & Issues
Volume 5, Issue 4 - Dec 2006
Volume 5, Issue 3 - Sep 2006
Volume 5, Issue 2 - Jun 2006
Volume 5, Issue 1 - Mar 2006
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Behavior of Geosynthetic Reinforced Modular Block Walls under Sustained Loading using Reduced-Scale Model Test
Yoo, Chung-Sik ; Kim, Sun-Bin ; Byun, Joseph ; Kim, Young-Hoon ; Han, Dae-Hui ;
Journal of the Korean Geosynthetic Society, volume 5, issue 1, 2006, Pages 1~7
Despite a number of advantages of reinforced earth walls over conventional concrete retaining walls, there exit concerns over long-term residual deformation when used as part of permanent structures. In view of these concerns, time-dependant deformation characteristics of geosynthetic reinforced modular block walls under sustained loads were investigated using reduced-scale model tests. The results indicated that a sustained load can yield appreciable magnitude of residual deformation, and that the magnitude of residual deformation depends on the loading characteristic as well as reinforcement stiffness.
Assesment on the Characteristics of Foundation Bearing Capacity in Reinforced Soil Wall Structure of Large Scale
Han, Jung-Geun ; Yoo, Seung-Kyung ; Cho, Sam-Deuk ; Lee, Kyang-Woo ; Hong, Ki-Kwon ;
Journal of the Korean Geosynthetic Society, volume 5, issue 1, 2006, Pages 9~14
The reinforced soil retaining wall structures of serious types with environmental are widely expanding more and more in Korea, which divided conventional type's reinforced soil retaining wall on segmental retaining wall. The causes of most crack occurred at block in reinforced soil retaining wall structure caused by the differential settlement of foundation. It is difference of settlement for significant factor that with overall slope stability. In this study, design assessment of foundation bearing capacity related to differential settlement of foundation ground was considered. And, also, through case study, the countermeasure methods and its application were suggested that the bearing capacity of foundation had to stabilize. The foundation ground in charge of bearing capacity should be affected by the resisting force of sliding, because the foundation parts of reinforced soil retaining wall were belongs to potential slope sliding area in overall stabilizing including retaining wall structures. Therefore, the analyzing or the designing of bearing capacity for foundation should be considered control capacity on the overall slope sliding.
Settlement Reduction Effect of the Geogrid Reinforced Stone Column System
Park, Sis-Am ; Cho, Sung-Han ; Yoo, Chung-Sik ; Lee, Dae-Young ;
Journal of the Korean Geosynthetic Society, volume 5, issue 1, 2006, Pages 15~23
Sand Compaction Pile and Stone Column method have been used in widely during several decades as a technique to reinforce soft soils and increasing ultimate bearing capacity, accelerate consolidation settlement of the foundation ground. Stone column method, making a compaction pile using crushed stone, is a soft ground improvement method. However, stone column method is difficult to apply to the ground which is not mobilized enough lateral confine pressure because no bulging failure resistance. Hence, in present study, development the geogrid reinforced stone column system for settlement reduction and wide range of application of stone columns. To develop this system, triaxial compression tests were conducted for evaluation which is about behavior characteristics of stone column on replacement rate and confine pressure. Then, 3-dimensional numerical analysis were evaluated for application of the GRSC (geogrid reinforced stone column) system as evaluate behavior characteristics and settlement reduction effect of stone column reinforced by geogrid on types and reinforcing depth change of geogrid.
Seepage Behavior of Sea Dyke Final Closure with Installation of Bottom Protection Filter Mat
Oh, Young-In ; Yoo, Jeon-Yong ; Kim, Hyun-Tae ;
Journal of the Korean Geosynthetic Society, volume 5, issue 1, 2006, Pages 25~32
Sea dyke construction is simply defined as a cutting procedure of sea water flow. Sea dyke construction is more difficult than in-land construction because it is placed on deep seabed and exposed sea wave attack. Especially, the final closure of sea dyke is most dangerous due to the fast velocity of tidal flow. The final closure is consisted with vast rubble and heavy stone gabion, therefore the discharge velocity at land side of final close section is irregularly and sometime occur the fast discharge velocity. In this paper, the seepage model test performed to evaluate seepage behavior of final closure and continuous sea dyke section such as discharge velocity, hydraulic gradient, and phreatic line with installation of bottom protection filter mat. Based on the seepage model test results, the maximum discharge velocity of final closure section is 1.7m/sec and the discharge velocity is decreased maximum 23.7% with installation of bottom protection filter mat.
Interface shear strength between Crushed Stone and Geotextile
Lee, Seok-Won ; Youn, Choo-Moon ; An, Hyun-Ho ; Seo, Byoung-Wook ;
Journal of the Korean Geosynthetic Society, volume 5, issue 1, 2006, Pages 33~38
Large-scale direct shear tests were conducted in order to evaluate both the shear strength of crushed stone itself and the interface shear strength between crushed stone and geotextile. Total three types of geotextile (i.e. one woven geotextile and two nonwoven geotextiles) were used in the experimental program, considering two different values for the unit weight of crushed stone. Total fifteen tests were conducted in this study. It has been found from the experimental results that the friction angles of crushed stone itself were
under the unit weights of crushed stone being
, respectively. Interface friction angle between nonwoven geotextile and crushed stone showed
for type A indicating an efficiency of 83% and
for type B indicating an efficiency of 89%. Similarly, interface friction angle between woven geotextile and crushed stone showed
indicating an efficiency of 83%.