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TECHNICAL NOTE: SEISMIC AND WIND LOAD ANALYSIS OF NATURAL DRAUGHT HYPERBOLIC COOLING TOWER

Subhana Samad and Nazrul Islam

Paper No.: 00

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Vol.: 61

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No.: 4

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December, 2024

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pp. 121–135

Abstract

 

The present study looks at the impact of seismic and wind loads on hyperbolic cooling with different RCC shell. An existing cooling tower (BTPS, Karnataka) is used as a reference. The RCC shell thickness has been varied in relation to the reference cooling tower for comparison. Staad pro V8i software has been used to analyse the seismic and wind stresses on this cooling tower. The seismic analysis was performed using the modal analysis and response spectrum analysis methodologies, and in accordance with IS 875 (Part 3)-2015 the wind loads on these cooling towers were computed as pressures by employing wind pressures at different levels. The maximum deflection, the maximum principal stress, mode shapes, and their corresponding frequencies were obtained. Through the graphs, the variation in maximum principal stress and maximum deflection with respect to thickness is shown.
Keywords: Cooling Tower; Wind Load; Seismic Load; Varying Shell Thickness; Deflection; Stresses

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