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Ground Improvement Case-Histories by Cholachat Rujikiatkamjorn, Jian Chu, Buddhima Indraratna

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Chapter 16

Performance of Soft Clays Reinforced by Floating Columns

Mounir Bouassida1,2; Lassaad Hazzar2    1 Université de Tunis El Manar, Ecole Nationale d’Ingénieurs de Tunis, Tunis, Tunisia2 Simpro Consulting Bureau, Ariana, Tunisia

Abstract

This paper studies the reinforcement of very thick compressible soils by floating columns. Analysis is made on the basis of very recent methodology of design that combines the verifications of bearing capacity and settlement to provide the optimized improvement area ratio (IAR). Introducing the allowable long-term settlement of unreinforced compressible soil and assuming that the total short-term settlement is completed at the end of construction, an optimized length of floating columns is identified. ...

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