Stability of Cooling Tower Shell with Modified Wind Pressure Coefficients
Publication: Journal of Engineering Mechanics
Volume 119, Issue 11
Abstract
The stability analysis of natural draught cooling tower shell subjected to nonaxisymmetric wind pressure has been carried out using finite ring elements. In this investigation, concept of a local enhancement of wind pressure coefficients at the top—in addition to the usual variation of wind pressures with height—has been newly introduced. Justification for the use of such modified wind pressure coefficients has been presented. By considering the modified distribution of wind pressure coefficients, a parametric study has also been carried out to assess the influence of top ring stiffener, gradual thickening at shell bottom edge, and vertical cracking due to thermal gradient on the buckling behavior of natural draught cooling tower shells. Guidelines are furnished for choosing dimensions of the top ring stiffener to avoid top edge buckling.
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References
1.
Abel, J. F., Billington, D. P., Nagy, D. A., and Witta‐Dworkin, C. (1982). “Buckling of cooling towers.” J. Struct. Div., ASCE, 108(10), 2162–2174.
2.
Abel, J. F., Chang, S. C., and Hanna, S. L. (1986). “Comparison of complete and simplified elastic buckling analysis for cooling tower shells.” Eng. Struct., 8(1), 25–28.
3.
Cole, P. P., Abel, J. F., and Billington, D. P. (1975a). “Buckling of cooling tower shells: bifurcation results.” J. Struct. Div., ASCE, 101(6), 1205–1222.
4.
Cole, P. P., Abel, J. F., and Billington, D. P. (1975b). “Buckling of cooling tower shells: state‐of‐the‐art.” J. Struct. Div., ASCE, 101(6), 1185–1203.
5.
Cole, P. P., Abel, J. F., and Billington, D. P. (1977). Closure to “Buckling of cooling tower shells: Bifurcation results” by P. P. Cole, J. F. Abel, and D. P. Billington, J. Struct. Div., ASCE, 103(4), 917–919.
6.
Criteria for structural design of reinforced concrete natural draught cooling towers. (1985). IS:11504. Bureau of Indian Standards, New Delhi, India.
7.
Der, T. J., and Fidler, R. (1968). “A model study of the buckling behavior of hyperbolic shells.” Proc., Inst. Civ. Eng. (London) Part 1, 41(9), 105–118.
8.
Eckstein, U., Harte, R., Krätzig, W. B., and Wittek, U. (1987). “Simulation of static and kinematic buckling of stiffened and unstiffened cooling tower shells.” Eng. Struct., 9(1), 9–18.
9.
Hayashi, K., and Gould, P. L. (1983). “Cracking load for a wind‐loaded reinforced concrete cooling tower.” J. ACI, 79, 318–325.
10.
Mang, H. A., Floegl, H., Trappel, F., and Walter, H. (1983). “Wind loaded reinforced concrete cooling towers: Buckling or ultimate load?” Eng. Struct., 5(3), 163–180.
11.
Mungan, I. (1976). “Buckling stress states of hyperboloidal shells.” J. Struct. Div., ASCE, 102(10), 2005–2020.
12.
Mungan, I. (1987). “Wind buckling approach for R/C cooling towers.” Civil engineering practice, P. N. Cheremisinoff, et al., eds., Vol. 1, 627–662.
13.
Mungan, I., Ruhlwedel, J., and Winter, M. (1984). “Nonlinear behaviour of cooling tower shells.” Proc. Second Int. Symp. on Natural Draught Cooling Towers, Ruhr‐Universität Bochum, Germany, Sept. 5–7, 298–308.
14.
Niemann, H. J. (1971). “Zur stationären windbelastung rotations‐symmetrischer Bauwerke im Bereich transkritischer Reynoldszahlen.” Tech. Report, Mitteilung Nr. 71‐2, March 1971, Institute für Konstruktiven Ingenieurbau Ruhr‐Universität Bochum, Bochum, Germany.
15.
Niemann, H. J. (1992). “Windwirkungen auf hohe Schalenkuehltuerme.” Contribution in the VGB‐Fachbuch: Bauen Fuer Kraftwerke (Under print in Germany).
16.
Niemann, H. J., and Zerna, W. (1986). “Impact of research on development of large cooling towers.” Eng. Struct., 8(1), 74–86.
17.
Ramanjaneyulu, K. (1991). “Buckling behaviour of wind loaded cooling tower shells,” PhD thesis, Indian Institute of Technology, Madras, India.
18.
“Recommendations for the design of hyperbolic or other similarly shaped cooling towers.” (1977). International Association for Shell and Spatial Structures, Brussels, Belgium.
19.
“Reinforced concrete cooling tower shells—practice and commentary.” (1984). ACI J., 81(6), 623–631.
20.
“Richtlinien—Bautechnik bei kühltürmen, Bautechnische—richtlinien (BTR).” (1990). “VGB Technischen Vereinigung Der Grosskraftweiksbet‐Geiber E. V.” Kraftwerkstechnik, GMBH, Essen, Germany.
21.
Sanal, Z. (1985). Dynamisches Tragverhalten und kinetische stabilität wind‐bean‐spruchter kühlturmschalen aus stahlbeton unter Berücksichtingung temperaturbedingter Rissildung, Techn:‐Wissenschaftliche Mitteilungen (Nr. 85‐1) des Institute für konstruktiven Ingenieurbau (IKIB). Ruhr‐Universität Bochum, Bochum, Germany.
22.
“Specification for water cooling towers.” (1975). BS:4485:Part 4, British Standards Inst., London, England.
23.
Srinivasa Rao, P., Aravindan, P. K., and Ramanjaneyulu, K. (1991a). “Buckling analysis of cooling tower shells subjected to non‐axisymmetric wind pressures.” Int. J. Computers and Structures, 40(4), 849–856.
24.
Srinivasa Rao, P., Aravindan, P. K., and Ramanjaneyulu, K. (1991b). “Buckling safety of cooling tower shells: Evaluation of some important code provisions.” ACI J., 88(3), 325–329.
25.
Stallbohm, H., Mungan, I., and Gould, P. L. (1976). “Discussion on buckling of cooling tower shells: Bifurcation results.” J. Struct. Div., ASCE, 102(1), 303–304.
26.
“Standard practice for the design and construction of cast‐in‐place reinforced concrete chimneys and commentary.” (1989). ACI 307‐88, ACI 307R‐88, American Concrete Inst., Detroit, Mich.
27.
Wittek, U., Grote, K., and Damjacob, H. (1988). “A simplified numerical method for the design of the wall thickness of cooling tower shells.” Proc. IASS Symp. on Innovative Applications of Shells and Spatial Forms, International Association for Shell and Spatial Structures, Nov. 21–25, Bangalore, India, Vol. 2, 751–761.
28.
Zerna, W., and Mungan, I. (1980). “Construction and design of large cooling towers.” J. Struct. Div., ASCE, 106(2), 531–544.
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Copyright © 1993 American Society of Civil Engineers.
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Received: Dec 26, 1991
Published online: Nov 1, 1993
Published in print: Nov 1993
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