Abstract:
Pile Design Philosophies for Coralline and Weak Carbonate Rocks
Dhanisha M, Afcons Infrastructures Limited, dhanisha.madhukumar@afcons.com
Aditya S. Khatavkar, Afcons Infrastructures Limited, aditya.khatavkar@afcons.com
Sunil S. Basarkar, Afcons Infrastructures Limited, sunil.basarkar@afcons.com
Despite advances in pile design methodologies and piling techniques at site, difficulties and uncertainties still exists for design of piles in coralline deposits and weak carbonate rocks. Such deposits are known to be heterogenous in nature, and occupy major stretches of earth, where piling experiences are probably very scanty. Such deposits are associated with low unit weights and usually consist of weakly cemented calcareous and carbonate soils interbedded with coral rocks containing cavities which are completely void or filled with coral debris. Many of the studies indicate that conventional parametric relationships are not applicable to such sediments and rock formations.
The titled paper is proposed to provide an appraisal of the available information that cautions against risks involved in conventional design practice and also serve as a guideline for pile design in such formations.
Planned contents of the proposed paper are:
- Problems and unusual characteristics of coralline deposits, weak carbonate rocks
- Fallacies of conventional design for Driven piles
- Appraisal on pile behaviour in coralline sands, weak carbonate rocks
- Interim guidelines on the choice of parameters for Bored pile design
- Possibilities of Cyclic de-gradation on shear capacity
Contents of the paper is expected to provide a background and a basis for the pile design and is likely to serve as an eye-opener for research into this important soil- Pile structure interactions.
Abstract: Theme 8