Abstract
Stone columns are surely entitled for ground improvement and used on large scale by engineers these days. The vertical load capacity of stone columns reached to the ampler level by encasement of column material and using the bulging resistance due to confinement. Now, the efforts are in the direction for enhancement of shear strength of the stone column. The peripheral reinforcement is also considered for better shear strength by researchers. The objective of this paper is to study shear capacity of stone column on insertion of one extra layer of reinforcement in between peripheral layer and centre i.e. Dual Layered Reinforced Stone Column (DLRSC). In this experimental study, Geonets of small aperture openings are used as reinforcing layers due to their higher stiffness related to geotextiles. Various direct shear tests are conducted with different diameter and varying spacing between two layers of the reinforcement. Transformation in these combinations is also observed due to internal stresses generated by different values of Normal pressure. Outcomes are compared with the ordinary and single layered reinforced stone column which shows the significant amelioration to the shear strength of the stone columns.
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Jaiswal, A., Kumar, R. (2021). Study on Response of Dual Layered Reinforced Stone Column Under Shear Loading. In: Weng, MC., Kawamura, S., Ding, J. (eds) Advancements in Geotechnical Engineering. GeoChina 2021. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-79798-0_9
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