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Suggestion of the Settlement Estimation Method for Granular Compaction files Considering Lateral Deformations  

Hwang Jung-Soon (Korea Railroad Technical Corporation)
Kim Hong-Taek (Dept. of Civil Engrg., Hongik Univ.)
Kim Seung-Wook (Rural Research Institute, KARICO)
Koh Yong-Il (Dept. of Civil Engrg., Chodang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.21, no.3, 2005 , pp. 149-157 More about this Journal
Abstract
In cases of the loosely accumulated ground and soft clayey soils, the settlement criterion usually governs in evaluating the stability of structures. The settlement is also a dominant factor to control the design of granular compaction piles mainly applied to the reinforcement of foundation structures in soft ground. In the previous studies, settlement behaviors of granular compaction piles have generally been analyzed with an evaluation of the settlement reduction factor based on the load-sharing ratio and the replacement ratio. In this approach, however, since the reinforced ground with granular compaction piles is simplified as the composite ground, only the difference of a relative vertical strength between piles and soils is taken into account without reflecting lateral behaviors of granular compaction piles. In the present study, the method of estimating the settlement of granular compaction piles is proposed by synthetically considering a vertical strength of the ground, lateral behaviors of granular compaction piles, the strength of pile materials, a pile diameter, and an installation distance of the pile. Further, far the verification of a validity of the proposed method, predicted settlements are compared with results from previous studies. In addition, parametric studies are performed together with detailed analyses of relevant design parameters.
Keywords
Granular compaction pile; Lateral deformation; Settlement; Tresca failure criterion;
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1 장원호, 황정순, 윤지연, 김홍택 (2004), '조립토 다짐말뚝의 거동특성 평가 및 간편설계기법의 제시', 한국지반환경공학회 학술발표회 논문집 pp.239-248
2 Aboshi, H., Ichimoto. E., Enoki. M., and Harada, K. (1979), 'The Compozer, a Method to Improve Characteristics of Soft Clays by Inclusion of Large Diameter Sand Columns', Proceeding of International Conference on Soil Reinforcement, Paris, France, Vol.1, pp.211-216
3 Greenwood, D. A. (1970), 'Mechanical Improvement of Soil below Ground Surface', Proceeding of Ground Engineering Conference, Institute of Civil Engineers, pp.9-20
4 Van Impe, W. F., and De Beer, E. (1983), 'Improvement of Settlement Behavior of Soft Layers by Means of Stone Columns', Proceedings of 8th European Conference on Soil Mechanics and Foundation Engineering, Vol.1, pp.309-312
5 Van Impe, W. F., De Cock, F. D., and Maertens, J. (1997), 'Vibro - Compactions and Stone Columns', Ground Improvement, Vol.1, No.3, pp.148-157
6 Hill, R. (1950), 'The Mathematical Theory of Plasticity', Oxford University Press
7 배우석 (2001), '쇄석말뚝으로 개량된 기초시스템의 지지력 및 침하 특성', 박사학위 논문, 충북대학교
8 Hughes, J. M. O., and Withers, N. J. (1974), 'Reinforcing Soft Cohesive Soil with Stone Columns', Ground Engineering, Vol.7, No.3, pp.42-29
9 Priebe, H. (1976), 'Estimating Settlements in a Gravel Column Consolidated Soil', Die Bautechnik 53, pp.160-162
10 황정순 (2004), '연약지반에 설치된 조립토 다짐말뚝의 극한지지력 및 침하량 산정기법', 박사학위논문, 홍익대학교
11 Thorburn, S. (1975), 'Building Structures Supported by Stabilized Ground', Geotechnique, Vol.25, No.1, pp.83-94   DOI   ScienceOn
12 Timoshenko, S. and Goodier, J. N. (1970), Theory of Elasticity, McGraw-Hill, New York
13 Bowels, J. E. (1988), 'Foundation Analysis and Design', International Edition', McGraw-Hill, New York