Reinforced Stone Columns in Weak Deposits: Laboratory Model Study

Black, J.A.; Sivakumar, V.; Madhav, M. R.; Hamill, Gerard

doi:10.1061/(asce)1090-0241(2007)133:9(1154)

Cited by 124 publications

(32 citation statements)

References 7 publications

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“…Laboratory-based research, together with analytical modelling, numerical modelling and field observations, is well documented, and has contributed to improvements in efficiency and quality control (Hughes & Withers, 1974;Hughes et al, 1975;Aboshi et al, 1979;Balaam & Booker, 1981;Barksdale & Bachus, 1983;Charles & Watts, 1983;Alamgir et al, 1994;Hu, 1995;Balaam et al, 1977;Raju, 1997;Slocombe et al, 2000;Watts & Serridge, 2000;McKelvey, 2002;McKelvey et al, 2004;Pulko & Majes, 2005;Black, 2007;Black et al, 2007aBlack et al, , 2007bMcCabe et al, 2009). Stone columns are typically employed to support large raft foundations at relatively low or moderate loading conditions.…”

Section: Introductionmentioning

confidence: 99%

The settlement performance of stone column foundations

2011

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Vibrated stone columns are frequently used as a method of reinforcing soft ground as they provide increased bearing capacity and reduce foundation settlements. Their performance in relation to bearing capacity is well documented, but there is also a need for enhanced understanding of their settlement characteristics, particularly in relation to small-group configurations. This paper presents results obtained from physical model tests on triaxial specimens 300 mm in diameter and 400 mm high. Parameters investigated include column length to diameter ratio, area replacement ratio and single/group configuration. The findings of the work are as follows. The design is flexible: settlement can equally be controlled using short columns at relatively high area replacement ratios, or longer columns at smaller area replacement ratios. An optimum area replacement ratio of 30-40% exists for the control of settlement. The settlement performance of a small column group is highly influenced by inter-column and footing interaction effects.

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Section: Introductionmentioning

confidence: 99%

The settlement performance of stone column foundations

2011

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“…In the present analysis the length of the granular pile is generally greater than 6 times its diameter (i.e., long granular piles) and therefore, the value of q gpu is calculated based on the bulging deformation of the granular pile [31][32][33]. The initial modulus of subgrade reaction of weak soil can be calculated by one of the methods presented in the literature [34].…”

Section: Methods Of Analysismentioning

confidence: 99%

Effect of different parameters on the behavior of strip footing resting on weak soil improved by granular piles

El-Garhy

Elsawy

2017

Geo-Engineering

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“…In recent years, the stiffening column technique has been adopted the floating stone column, when the soft ground is too deep. The bearing capacity was remained constant for the floating stone column at length to diameter ratio (L/D) of 10 [4][5][6]. According to Sivakumar et al [7] and Tekin and Ergun [8], the effective length to diameter ratio of the column was between 7 and 9.…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation on the Different Shapes of Gravelly Sand Columns to Increase the Loading Capacity of Soft Clay

et al. 2017

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Abstract. Improvement on soft clay by the installation of stone column is one of the most popular methods followed worldwide. Different analytical and numerical solutions have already been developed for understanding the load transfer mechanism of soft soil reinforced with stone column. This study investigated a bearing capacity of the gravelly sand column, installed in soft clay bed at 15kpa of undrained shear strength. The column variable of length and diameter ratio at 7, 8 and 9 were evaluated. On top of that, the combination of two diameters in single column was tested and the uniform diameter was used as a control. In the numerical analysis, Mohrcoulomb model was adopted in the idealization of the behaviour of the gravelly sand column and soft clay materials. The results revealed that the optimum design that gave the highest loading capacity of the combination l1=l2 of column diameter was the length and diameter ratio of 8.

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Reinforced Stone Columns in Weak Deposits: Laboratory Model Study

Cited by 124 publications

References 7 publications

The settlement performance of stone column foundations

The settlement performance of stone column foundations

Effect of different parameters on the behavior of strip footing resting on weak soil improved by granular piles

Numerical Evaluation on the Different Shapes of Gravelly Sand Columns to Increase the Loading Capacity of Soft Clay

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