i-manager Publications

Effects of Strength of Confining Material on Strength and Deformation of Stone Column

S.P. Singh*, Chamling**

* Professor, Department of Civil Engineering, National Institute of Technology, Rourkela, Odisha, India.

** Student, Department of Civil Engineering, National Institute of Technology, Rourkela, Odisha, India.

Periodicity:June - August'2014
DOI : https://doi.org/10.26634/jste.3.2.3016

Abstract

Among the various ground improvement techniques, stone columns (SCs) are widely used for supporting flexible and light weight structures. Stone column derives its load carrying capacity from the confinement offered by the surrounding soil. Stone column fails due to bulging and its load carrying capacity can be increased by preventing lateral bulging. A detailed finite-element analysis on the behaviour of single stone column of 50 mm diameter is studied by varying parameters like loading area and shear strength of soft clay surrounding it. Finite-element analyses have been performed using 15-noded triangular elements with the software package PLAXIS. The effects of loading area and strength of confinement material on bulging response have been investigated in this study. The results indicated that the diameter of bulging decreased with increase in the loading area up to 3 times the diameter of the column, beyond which no substantial change in bulging diameter is noticed. Further, an increase in the strength of surrounding material results in a decrease in bulging shape and the position of the maximum bulging is shifted downwards.

Keywords

Keywords: Ground Improvement, Stone Column, Soft Soil, Finite-Element Analysis.

How to Cite this Article?

Singh and Chamling (2014). Effects of Strength of Confining Material on Strength and Deformation of Stone Column. i-manager’s Journal on Structural Engineering, 3(2), 11-14. https://doi.org/10.26634/jste.3.2.3016

References

[1]. Aboshi, H., Ichimoto, E., Harada, K., and Emoki, M. (1979). The composer-A method to improve the characteristics of soft clays by inclusion of large diameter sand columns. Proc., Int. Conf. on Soil Reinforcement., E.N.P.C., 1, Paris, pp.211–216.

[2]. Ambily, A. P. and Gandhi, S. R.(2007). Behaviour of stone columns based on experimental and FEM analysis, Journal of Geotechnical and Geoenvironmental Engineering, ASCE/, Vol.133, No.4, pp.405-415.

[3]. Babu, M., Nayak, S. R., Shivashankar, R. (2013). A critical review of construction, analysis and behaviour of stone columns, Journal of Geotech Geol Eng, Vol.31, No.11, pp.1–22.

[4]. Bae, W., Shin B., An., B., (2002). Behaviour of foundation system improved with stone columns, pp.675 - 678

[5]. Hughes, J. M. O., and Withers, N. J. (1974). Reinforcing of soft cohesive soils with stone columns. Ground Eng., Vol.7, No.3,pp. 42–49.

[6]. Hughes, J. M. O., Withers, N. J., and Greenwood, D. A. (1976). A field trial of reinforcing effect of stone column in soil. Proc., Ground Treatment by Deep Compaction, Institution of Civil Engineers, London, Vol.25, No.1, pp.31–44.

[7]. IS: 15284-2003 Indian standard code of practice for design and construction for ground improvementguidelines. Part 1: Stone columns, India.

[8]. Madhav, M. R., and Vitkar, P. P. (1978). Strip footing on weak clay stabilized with a granular trench or pile. Can. Geotech. J., Vol.15, No.4, pp.605–609.

[9]. Murugesan S, Rajagopal K (2010). Studies on the behaviour of single and group of geosynthetic encased stone columns. ASCE, J Geotech Geoenviron Eng., Vol. 136, No.1, pp.129–139.

[10]. Mitchell, J. K., and Huber, T. R. (1985). Performance of a stone column foundation. J. Geotech. Engg., Vol.111, No.2, pp.205–223.

[11]. Saha, S., Santhanu, S., and Roy, A. (2000). Analysis of stone column in soft ground. Proc., Indian Geotech. Conf., Bombay, India, pp.297–300.

[12]. Sharma, R. S. and Phanikumar, B. R. (2005). Laboratory study of heave behaviour of expansive clay reinforced with geopiles, J. Geotech. Geoenviron. Eng., Vol. 131, No.4, pp.512-520.

	North Americas,UK, Middle East,Europe		India	Rest of world
	USD	EUR	INR	USD-ROW
Pdf	35	35	200	20
Online	35	35	200	15
Pdf & Online	35	35	400	25

Effects of Strength of Confining Material on Strength and Deformation of Stone Column

Abstract

Keywords

How to Cite this Article?

References

If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Options for accessing this content: