Abstract
The ever-increasing demand for concrete used in the construction and infrastructure field leads to increasing global pollution over the decades. Hence, the construction field should look always for using its raw materials in sustainable ways without affecting the functionality of the structure. Design optimization is one such decision-making strategy in providing an engineered solution with maximum reliability, environmental sustainability and cost efficiency of constructed facilities. In the present study, the design optimization of a non-overflow section of a concrete gravity dam has been studied. The modelling and analysis of the non-overflow section of the concrete gravity dam have been carried out in the FEM package ANSYS along with appropriate algorithms. The parameters considered for the algorithmic optimization of the typical dam section are geometrical properties of the Dam as design variables (for fixed height and freeboard) to minimize the volume of concrete without compromising on loading and factor of safety requirements as per IS code provisions. The current work is focused on optimizing the non-overflow section of a concrete gravity dam by the reduction in its volume, to its weight which is always in direct proportion. Decreasing the dam’s weight is must both from the sustainable design and economical point of view. All effective load combinations (as per IS: 6512-2003) where the dam is subjected to maximum loads under ideal operating conditions are considered for stress analysis and optimization. The results of the optimization are presented and discussed in this paper. This study observed that the reduction of 9.95% weight of non-overflow section for concrete gravity dam without actually compromising on the increased factor of safety, which is in association with its functioning under standard normal operating conditions subjects to IS code provisions. Also, green house gas CO2 emission can be reduced, indicating the sustainable design solution for massive constructions like concrete gravity dam.
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Thanks to Katta Aparna, Assistant Professor in Department of Civil Engineering, CVR College of Engineering for helping in modelling of gravity dams.
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Satish, B.J.N., Venkatesh, C., Reddy, B.A. et al. Design optimization of non-overflow section of a concrete gravity dam. J Build Rehabil 7, 31 (2022). https://doi.org/10.1007/s41024-022-00169-y
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DOI: https://doi.org/10.1007/s41024-022-00169-y