ABSTRACT: In this paper, a modification of the K-stiffness method, which is used to calculate the reinforcement load of mechanically stabilised earth (MSE) structures on firm foundations, was investigated for application to reinforced structures on soft ground. Current design methods for the estimation of reinforcement loads of reinforced structures on firm foundation, namely the tieback wedge or simplified method, the FHWA structure stiffness method, the original K-stiffness method and the modified K-stiffness method, were applied to calculate the reinforcement loads of two embankments constructed on soft Bangkok clay. From comparisons of the calculated and observed values, a modification of the original K-stiffness method was proposed by suggesting a uniform distribution of the reinforcement loads, and adding one more factor, the settlement factor Φs, to take into account the influence of settlement on the reinforcement loads.
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October 2011
Research Article|
October 01 2011
Modification of K-stiffness method for MSE structures on soft ground Available to Purchase
N. Tin;
N. Tin
1
MEng Graduate, School of Engineering and Technology, Asian Institute of Technology, Thailand, Telephone: +662 524 5512, Telefax: +662 524 6050, E-mail: tn507@uow.edu.au
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D.T. Bergado;
D.T. Bergado
2
Professor, School of Engineering and Technology, Asian Institute of Technology, Thailand, Telephone: +662 524 5512, Telefax: +662 524 6050, E-mail: bergado@ait.ac.th (corresponding author)
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P. Voottipruex;
P. Voottipruex
3
Associate Professor, Faculty of Technical Education, King Mongkut's University of Technology, North Bangkok, Thailand, Telephone: +662 913 2500, Telefax: 662–5878260, E-mail: pnv@kmutnb.ac.th
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T. Tanchaisawat
T. Tanchaisawat
4
Lecturer, Faculty of Engineering, Chiang Mai University, Thailand, Telephone: +665 394 4156, Telefax: +665 389 2376, E-mail: tawatchai@eng.cmu.ac.th
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Publisher: Emerald Publishing
Received:
June 18 2009
Revision Received:
July 07 2011
Accepted:
July 08 2011
Online ISSN: 1751-7613
Print ISSN: 1072-6349
© 2011 Thomas Telford Ltd
2011
Geosynthetics International (2011) 18 (5): 304–321.
Article history
Received:
June 18 2009
Revision Received:
July 07 2011
Accepted:
July 08 2011
Citation
Tin N, Bergado D, Voottipruex P, Tanchaisawat T (2011), "Modification of K-stiffness method for MSE structures on soft ground". Geosynthetics International, Vol. 18 No. 5 pp. 304–321, doi: https://doi.org/10.1680/gein.2011.18.5.304
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