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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Geotechnical Society
Journal Basic Information
Journal DOI :
Korean Geotechical Society
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Volume & Issues
Volume 26, Issue 12 - Dec 2010
Volume 26, Issue 11 - Nov 2010
Volume 26, Issue 10 - Oct 2010
Volume 26, Issue 9 - Sep 2010
Volume 26, Issue 8 - Aug 2010
Volume 26, Issue 7 - Jul 2010
Volume 26, Issue 6 - Jun 2010
Volume 26, Issue 5 - May 2010
Volume 26, Issue 4 - Apr 2010
Volume 26, Issue 3 - Mar 2010
Volume 26, Issue 2 - Feb 2010
Volume 26, Issue 1 - Jan 2010
Selecting the target year
A Study on the Development of Design Chart for Drilled Shaft Socketed into Weathered Zone Using DCPT (Driving Cone Penetrometer Test)
Jung, Sung-Min ; Kwon, Oh-Sung ; Lee, Jong-Sung ; Lee, Min-Hee ; Choi, Yong-Kyu ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 5~13
For the development of design chart for drilled shafts socketed into weathered zone, the 6 bi-directional pile load tests with load transfer measurements done in two in-situ sites were performed. Also, DCPTs were performed in each test point. Maximum unit skin frictions and maximum unit end bearing capacities from pile load test results were analyzed. Inter-relationships between DCPT's characteristics were also analyzed. In the soils, the inter-relationships of maximum unit skin friction and DCPT appeared so low. But in the weathered zones, inter-relationships between maximum unit skin friction / maximum unit end bearing capacity and DCPT were so high that the coefficient of correlation is over 0.70.
3D Finite Element Analysis on Load Carrying Capacity of Geosynthetic-reinforced Bridge Abutment
Yoo, Chung-Sik ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 15~26
This paper presents the results of a three-dimensional finite element analysis on a geosynthetic-reinforced bridge abutment. Examples on the use of mechanically stabilized earth bridge abutment in north America are first presented. A three-dimensional finite element analysis on a 4.8 m high, 14 m wide geosynthetic-reinforced bridge abutment was performed to investigate the 3D behavior of the geosynthetic-reinforced bridge abutment and the load carrying capacity of the bridge abutment in the three-dimensional space. The results are then presented in a way that the three-dimensional behavior of the abutment can be identified in terms of wall displacements and reinforcement forces. It is shown that the wall facing displacements as well as the reinforcement forces in the abutment are smaller than those computed based on a plane strain approximation.
A Study on the Thernal Conductivity Characteristics of Discarded Tire Powder-Soil Mixture
Kim, Hak-Sam ; Seo, Sang-Youl ; NakamuRa, Dai ; Yamashita, Satoshi ; Suzuki, Teruyuki ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 27~36
Thermal conductivities using the thermal probe method were determined for frost susceptible soil with three types of discarded tire powder under the condition of a temperature variation from
. Also, the amount of unfrozen water contents was measured by the pulsed NMR method. The variation of unfrozen water content in the experimental condition could be expressed as a function of temperature given by an exponential equation. A new model for calculating the thermal conductivity of frozen soil was proposed. It is extended from the two element method and subdivided into three constituent elements.
Development of the Seepage Flow Monitoring Method by the Hydraulic Head Loss Rate
Eam, Sung-Hoon ; Kang, Byung-Yoon ; Kim, Ki-Wan ; Koo, Ja-Ho ; Kang, Shin-Ik ; Cha, Hung-Youn ; Jung, Jae-Hyun ; Cho, Jun-Ho ; Kim, Ki-Soo ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 37~48
In this study, the seepage flow monitoring method by the hydraulic head loss rate was developed for the purpose of application to offshore construction site enclosed by cofferdams in which seepage force varies periodically. The amount of the hydraulic head loss rate newly defined in this graph was in a range between 0 and 1. The zero of the rate means the existence of flow with no seepage resistance. The 1 of the rate means no seepage flow through the ground. The closer to 1 the coefficient of determinant in the hydraulic head loss graph is, the more the ground through which seepage water flows is stable. The closer to 0 the coefficient of determinant in the hydraulic head loss graph is, the more the ground through which seepage water flows was unstable and the higher the possibilities of existence of empty space or of occurrence of piping on the seepage flow pass in the ground is. The hydraulic head loss graph makes it possible to monitor sensitively the situation of seepage flow state, and the graph helps to understand easily the seepage flow state at the specific section on the whole cofferdam.
Analysis for Behavior of Rockfall Movement by Cheonbuldong Valley of Seoraksan National Park
Cho, Yong-Sung ; Kim, You-Seong ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 49~55
The large scale rock falling had occurred on 22nd February, 2007 in the Cheongbuldong valley area of Seoraksan National Park, and the visiting pass had been closed for a while. Similar cases of rock falling have occurred in the latest years according to a great variety of crack, joint, weathering of solid rock and surface water caused by a recent climatic change in the Seoraksan National Park. In this study, rock falling energy was estimated and the movement of rockslide was analysed based on detailed investigation on large scale rockslides occurring at the spot 80 m high from the bottom of the valley. From analysing results, the effective management method for rock falling was proposed. The method could minimized the dangerous factors with no change of natural environment of the National Park.
Comparative Studies of Kriging Methods for Estimation of Geo-Layer Distribution of Songdo International City in Incheon
Kim, Dong-Hee ; Ryu, Dong-Woo ; Lee, Ju-Hyoung ; Choi, In-Gul ; Kim, Jong-Kook ; Lee, Woo-Jin ;
Journal of the Korean Geotechnical Society, volume 26, issue 5, 2010, Pages 57~64
Kriging techniques have been used to estimate the spatial distribution of soil layers and soil properties in the geotechnical engineering area. Since the selected kriging technique may provide different values of estimation, the selection of method is important in the geotechnical estimation. In this paper, the spatial distribution of the thickness of consolidation layer of Songdo International City is estimated using simple, ordinary, and universal kriging techniques, and the reliability of estimated results is analyzed. It is shown that the consolidation layer thickness estimated by the simple kriging technique is larger than those by other kriging techniques when the location of estimation is far from the locations where the measured data exist. In this case, the reliability of the simple kriging technique is observed to be lower than those of other techniques. Universal kriging gives a negative value for thickness of consolidation layer in some locations away from the data. It is concluded that the ordinary kriging is the most optimized estimation technique because the reliability of ordinary kriging technique is higher than those of other ones and the consolidation layer thickness estimated by the ordinary kriging locates within the reasonable range.