Author : Priya Kulkarni and S. K. Kulkarni

R/C cooling towers are used for many kinds of industrial and power plants. These are huge structures and also show thin shell structures. The present paper deals with effect of wind analysis of hyperbolic cooling towers having variation in the height and thickness. The existing cooling towers are chosen from Bellary thermal Power station (BTPS) as case study. For the other models of cooling towers, the dimensions and thickness of the shell are varied with respect to reference tower. The cooling towers are analyzed by Staad. ProV8i having boundary conditions considered are Top end free and Bottom end is fixed. The Material properties of the cooling towers are young’s modulus 2.1 Mpa, Poisson Ratio 0.15 and density of RCC 25 kN/m3. Wind loads on these cooling towers have been calculated in the form of pressure by using design wind pressure co efficient given in IS 11504-1985 code & design wind pressure at different levels as per IS 875 (Part 3)-1987 code. Displacement in X, Y and Z directions, maximum and minimum principal stress at top and bottom are obtained. The variation in displacement v/s thickness, maximum and minimum principal stress is plotted graphically.

Keywords: Cooling tower, Displacement, Principal Stress, and Wind Load.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.6 (Dec-2015)