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풍하중에 의한 손상해석을 이용한 기하형상에 따른 자연 습식 냉각탑의 구조성능 평가 - Part I : One-shell 기하형상

Evaluation of Structural Performance of Natural Draught Cooling Tower according to Shell Geometry using Wind Damage Analysis - Part I : One-shell Geometry

  • 이상윤 (한양대학교 건축시스템공학과) ;
  • 노삼영 (한양대학교 건축학부)
  • Lee, Sang-Yun (Dept. of Architectural System Eng., Hanyang University) ;
  • Noh, Sam-Young (Dept. of Architectural Eng., Hanyang University)
  • 투고 : 2016.06.17
  • 심사 : 2016.08.03
  • 발행 : 2016.09.15

초록

Determining of the shape in the process of design for natural draught cooling tower is very important, because the shape of hyperbolic shell is respond sensitively to dynamic behavior of the whole cooling tower against wind load. In engineering practice, the geometric parameters have been determining based on the natural frequency. This study analyses influence of the tower shell geometric parameters on the structural behavior. For three representative models were selected, they were analyzed based on evaluation of damage by means of nonlinear FE-method. As a result, a hyperbolic rotational shell with the small radius overall was the lowest damage index induced by sufficient capacity of the stress redistribution and thus a wind-insensitive structure.

키워드

참고문헌

  1. C.K. Choi, H.C. Noh, "Statistical Behavior of RC Cooling Tower Shell due to Shape Imperfection", Journal of the Computational Structural Engineering Institute of Korea, Vol. 13, No. 1, 2000, pp. 147-158.
  2. C.S. Min, S.B. Kim, "Ultimate Behavior of Reinforced Concrete Hyperbolic Cooling Tower", Journal of Korean Society of Civil Engineering, Vol 12, No. 4, 1992, pp. 59-70.
  3. M. Angelides, "Seismic Consideration in the Design of Large Cooling Towers", Proc. of International Conference Industrial Chimneys & Cooling Towers, Prague, Czech, Oct 8-11, 2014, pp. 3-18.
  4. P.L. Gould, W.B. Kratzig, Cooling tower structures, Chap. 14 W.F. Chen (Ed.), Handbook of structural engineering, CRC Press, Boca Raton, 1997, pp. 14-47.
  5. D. Makovicka, "Response analysis of an RC cooling tower under seismic and windstorm effects", Acta Polytechnica, Vol. 46, No. 6, 2006, pp. 17-21.
  6. D. Busch, R. Harte, H.J. Niemann, "Study of a Proposed 200m High Natural Draught Cooling Tower at Power Plant Frimmersdorf /Germany", Engng. Struct. Vol. 19, 1997.
  7. R. Harte, W.B. Kratzig, Nonlinear Analyses of Reinforced Concrete Shells as a Preventive Measure Against Damages, 40th Universary Congress of IASS, Madrid, 1999.
  8. S.Y. Noh, S.Y. Lee, D.H. Heo, "Evaluation of Shell Geometry of the Natural Draught Cooling Tower", Journal of the Korean Association for Spatial Structures, Vol. 12, No. 3, 2012, pp. 97-105. https://doi.org/10.9712/KASS.2012.12.3.097
  9. VGB-Guideline: Structural Design of Cooling Towers, VGB-Technical Committee, "Civil Engineering Problems of Cooling Towers", Essen, 1997.
  10. VGB-R 610, Structural Design of Cooling Towers, VGB Power Tech e.V., Essen, 2010.
  11. H. Beem, C. Koenke, U. Montag, W. Zahlten, Femas 2000-Finite Element Moduls for General Structures Institute for Statics and Dynamics, Ruhr-University Bochum. User-Handbook Release 3.0., 1996.
  12. E.N. Dvorkin, K.J. Bathe, "A continuum mechanics based four-node shell element for general non-linear analysis", Engineering Computations, Vol. 1, Issue 1, 1984, pp. 77-88. https://doi.org/10.1108/eb023562
  13. S.Y. Noh, W.B. Kratzig, K. Meskouris, "Numerical simulation of serviceability, damage evolution and failure of reinforced concrete shells", Computers & Structures, Vol. 81, Issue 14, 2003, pp. 843-857. https://doi.org/10.1016/S0045-7949(02)00421-2
  14. R. Eligehausen, E.P. Popov, V.V. Bertero, "Local Bond Stress-Slip Relationships of Deformed Bars under Generalized Excitations", Report UCB/EERC-83/23, Univ. of California, Berkeley, Calif, USA, 1983.
  15. D. Darwin, D.A. Pecknold, "Inelastic Model for Cyclic Biaxial Loading of Reinforced Concrete", Civil Engineering Studies SRS 409, Univ. of Illionois, Urbana-Champain, Ill., 1974.
  16. S.Y. Noh, R. Harte, W.B. Kratzig, K. Meskouris, "New design concept and damage assessment of large-scale cooling towers", Structural Engineering & Mechanics, Vol 15, No. 1, 2003, pp. 53-70. https://doi.org/10.12989/sem.2003.15.1.053
  17. S.Y. Noh, E.M. Sin, "A global Damage Indicator based on the Modal Parameters in the FE-simulation of the Structures", Advanced Materials Research, Vols. 250-253, 2011, pp. 1105-1108. https://doi.org/10.4028/www.scientific.net/AMR.250-253.1105