Failure of Stone Column due to material yielding | ||||
| The International Conference on Civil and Architecture Engineering | ||||
| Article 1, Volume 8, 8th International Conference on Civil and Architecture Engineering, May 2010, Page 1-13 PDF (395.74 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccae.2010.44401 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Mukul Chandra Bora | ||||
| Dibrugarh Polytechnic, Lahowal, Assam, India. | ||||
| Abstract | ||||
| Abstract: Stone column or granular piles is one of the most effective ground improvement techniques for soft cohesive soil to increase in bearing capacity and reduction in settlement. This is partly due to replacement of soil by a relatively stiffer materials as well as drainage of action of stone column. The failure of stone column may be taken place due to the yielding of the column if the column has to support a rigid raft due to difference in stiffness and also may take place due to yielding of the stone column material upon loading beyond the critical state. The behaviour of such yielding stone column can be considered to be in the triaxial state of stress due to confinement provided by the surrounding soil or the reinforcement (encased stone column). The behaviour of the column material can be taken as an elasto-plastic and strain hardening and hence the yield function for the stone column material can be determined using different model parameters which can be determined from a series drained of triaxial tests data. This paper will present an approximate yield function for the yielded encased stone column. | ||||
| Keywords | ||||
| Stone column; Triaxial Test; Encased Column; Critical state and Yield Function | ||||
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