CONSOLIDATION RELIABILITY ANALYSIS OF STONE COLUMN REINFORCED GROUND

• Main Authors: K. S. NG, Y. M. CHEW, S. F. NG
• Format: Article
• Language: English
• Published: Taylor's University 2017-10-01
• Series: Journal of Engineering Science and Technology
• Subjects: Stone column; Reliability index; Monte Carlo simulation; Consolidation
• Online Access: http://jestec.taylors.edu.my/Vol%2012%20issue%2010%20October%202017/12_10_7.pdf

Stone column is an effective ground improvement method to improve the weak ground. This paper describes the implementation of reliability based analysis on the consolidation behaviour of stone column reinforced ground. Hasofer-Lind reliability index is computed involving non-correlated normal random variables which include stone column diameter, coefficient of volume compressibility, coefficient of consolidation and stress concentration ratio. The sensitivity of these variables on the effect of consolidation settlement is investigated in this study. Results show the importance of considering spatial variability in design and analysis of stone column reinforced ground. The probabilities of failure inferred from reliability indices are compared with Monte Carlo simulation where good agreements are obtained.