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http://dx.doi.org/10.14481/jkges.2014.15.1.25

A Study on Ground Reinforcement Effect with Structural Forms of Improved Soil  

Park, Kyunghan (Dept. of Civil Engineering, Univ. of Seoul)
Jang, Gisoo (KISTEC)
Lee, Song (Dept. of Civil Engineering, Univ. of Seoul)
Publication Information
Journal of the Korean GEO-environmental Society / v.15, no.1, 2014 , pp. 25-34 More about this Journal
Abstract
The aim of this study is to analyze the mechanical characteristics and settlement feature of the composite ground with structural form changes. The laboratory model test is a soil tanker to be contained with clay and grid form improved soil, which is conducted in total 9 case with the uniaxial compressive strength of improved soil and replacement ratio of improved soil. The numerical analysis for variation of stress distribution ratio with depth was performed in the same conditions which are the laboratory model test. As a result, stress distribution ratios in mid and high replacement ratio are increasing and settlement is decreasing, except low replacement ratio. This study is presented for form effect ratio and settlement reduction factor with change of structure form, which is able to be helpful in further research and reference for change of structural forms at composite ground.
Keywords
Composite ground; Improved soil; Replacement ratio; Stress distribution ratio;
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  • Reference
1 Bergado, D. T., Anderson, L. R., Miura, N. and Balasubramaniam, A. S. (1996), Soft ground improvement in lowland and other enviroments, ASCE press, pp. 234-304.
2 Korea Ocean Research & Development Institute (2001), Design and construction guidelines of sand and gravel compaction piles and piles, Ministry of Oceans and Fisheries, pp. 19-27 (in Korean).
3 Murayama, S. (1962), A consideration on vibro-compozer method, Mechanization of Construction Works, No. 150, pp. 10-15 (in Japanese).
4 Nakayama, J. and Ueda, S. (1967), On measure result of stress concentration ratio of composite ground, The 22th Conf. of JSSMFE, pp. 97-104 (in Japanese).
5 Oh, P. J. (2012), A study on mechanical characteristics of composite ground by the strength variation of improved materials, University of Seoul, Ph D. dissertation, pp. 32-33, 225-226.
6 Priebe, H. (1976), Estimating settlements in a gravel column consolidation soil, Die Bautechnik 53, pp. 160-162.
7 Shin, H. Y. (2005), Analysis on the behavior of composite ground reinforced by sand compaction pile with low area replacement ratio, Chungang University, Ph D. dissertation, pp. 32-33, 225-226 (in Korean).
8 Shin, I. S. (2008), Analysis on the behaviour characteristics of the soil foundation with the arrangement type of deep cement mixing, Chonnam National University, Master's thesis, pp. 51-52 (in Korean).
9 Van Impe, W. F. and De Beer, E. (1983), Improvement of settlement behavior of soft layers by means of stone columns, Proc. 8th European Conf. on Soil Mech. and Found. Eng., Helsinki, Vol. 1, pp. 309-312.
10 Yoshikuni, H. (1979), Design and construction management of vertical drain method, Soil and Foundation Series, Gihoudou, pp. 208-210.