Abstract
Ground improvement is an optimal foundation solution, especially for weak soils and it can be used as an alternative to complement deep foundations such as conventional piling methods. This paper presents a case history of a housing project located in Chennai, India, wherein the project site consists of soft silty clays underlain by loose to medium dense silty sands. To provide housing for the socio-economically poor, the owner decided to optimize the foundation cost. Ground improvement using vibro stone columns, dry bottom feed method was chosen to be the optimal solution and the solution saves construction time too. This technique helped to increase the bearing capacity and to reduce the total settlements and differential settlements within the acceptable limits. Various aspects of sub-soil conditions, design aspects, construction methodology, and quality control measures are discussed in detail, in this paper.
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References
BS EN 14731:2005 (2015) Execution of special geotechnical works–Ground treatment by deep vibration
IS 15284 (Part 1) (2003) Indian standard for design and construction for ground improvement–guidelines, Part 1: stone columns
IS 1904–1986 (2006) Code of Practice for design and construction of foundations in soils: general requirements
IS 6403: 1981 (Reaffirmed 2002) Indian standard code of practice for determination of bearing capacity of shallow foundations
Priebe HJ (1995) The Design of vibro replacement, Ground Engineering. GT 037-13 E
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Vani, B., Annam, M.K. (2020). Optimal Foundation Solution for Residential Projects. In: Latha Gali, M., Raghuveer Rao, P. (eds) Construction in Geotechnical Engineering. Lecture Notes in Civil Engineering, vol 84. Springer, Singapore. https://doi.org/10.1007/978-981-15-6090-3_42
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DOI: https://doi.org/10.1007/978-981-15-6090-3_42
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