Journal of Engineering, Project, and Production Management, 2022, 12(3), 217-223
Ultimate Strength of RC Chimney Section under Monotonic Loading
1Research Scholar, Department
of Civil Engineering, SVNIT, Surat, Gujarat, India, E-mail: megha211984@gmail.com
(corresponding author).
2Professor, Department of Civil Engineering, SVNIT, Surat,
Surat, Gujarat, India, E-mail: sav@amd.svnit.ac.in
Engineering Management
Received December 7, 2021; revised March 13, 2022; accepted May 14, 2022
Available online June 13, 2022
Abstract: The dispersion of particulate air pollutants and impure gaseous residue through tall stack-like structures, including chimneys, has played an important role in industrial air pollution. Tall RC chimneys can be regarded as cantilever columns subjected to (i) axial load resulting from the weight of the shell, lining, and other components and (ii) bending moment resulting from lateral loads involving wind and earthquake forces. The 3rd edition of IS: 4998 published in 2015, adopted the limit state method for the design of RC chimneys. This methodology requires a clearly defined and precise stress-strain relationship for concrete and steel, yet many discrepancies are evident when the stress-strain relationships of these materials adopted by IS: 4998-2015 and other well-designed standards are compared. The paper also discusses the effects of these disparities of material law on the ultimate strength of the section, along with the contribution of concrete and steel in ultimate strength, ultimate curvature, and depth of the neutral axis. For the comparison of the above-mentioned parameters, design recommendations of IS 4998 – 2015, CICIND 2011, and ACI 307 – 08 are used. The results of the study reveal that a higher percentage of steel the disparities are governed by the stress-strain law of steel rather than concrete. As for analysis and design purposes, RC chimneys are considered to be tall cantilever columns having thin-walled hollow circular sections subjected to axial compression resulted from self-weight and bending moments resulted from lateral forces. The results of this study can also apply to any such structures like TV towers.
Keywords: ACI: 307 – 08, CICIND 2011, IS: 4998 – 2015, Ultimate Strength, RC chimney.
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Citation: Bhatt, M. and Vasanwala, S. A. (2022). Ultimate Strength of RC Chimney Section under Monotonic Loading. Journal of Engineering, Project, and Production Management, 12(3), 217-223.
DOI:
10.32738/JEPPM-2022-0020
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