Numerical studies of the effect of residual imperfection on the mechanical behavior of heat-corrected steel plates, and analysis of a further repair method

  • Chun, Pang-Jo (Wayne State University, Civil Engineering Department) ;
  • Inoue, Junya (The University of Tokyo, Material Engineering Department)
  • Received : 2008.12.03
  • Accepted : 2009.01.27
  • Published : 2009.05.25


Heating correction, through heating and flattening a structure with a pressing machine, is the in-situ method used to repair buckled steel structures. The primary purpose of this investigation is to develop an FEM model which can predict the mechanical response of heat-corrected plates accurately. Our model clarifies several unsolved problems. In previous research, the location of the imperfection was limited to the center of the specimen although the mechanical behavior is strongly affected by the location of the imperfection. Our research clarifies the relationship between the location of the imperfection and the mechanical behavior. In addition, we propose further reinforcement methods and validate their effectiveness. Our research concludes that the strength of a buckled specimen can be recovered by heating correction and the use of an adequate stiffener.


heating correction;residual imperfection;buckling analysis;finite element analysis


  1. Fukumoto, Y. (1982), Buckling and Stability Analysis of Structures (in Japanese), Gihodo, Tokyo, Japan.
  2. Fukumoto, Y. (1987), Guidelines for Stability Design of Steel Structures, JSCE, Japan.
  3. Kawata, Y. (1995), "The Great Hanshin-Awaji Earthquake Disaster: Damage, Social Response, and Recovery", J. Natural Disast. Sci., 17(2), 1-12.
  4. Kim, Y.C., Hirohata, M. and Kawazu, H. (2006), "Compressive Behavior of Cruciform Column Projection Panel Corrected by Heating", JSSC, 13(49), 37-42 (in Japanese).
  5. Kim, Y.C., Hirohata, M. and Kawazu, H. (2004), "Safety Evaluation of Cruciform Columns Corrected by Heating (Mechanics, Strength & Structural Design)", Trans. of JWRI, 33(1), 53-58.
  6. Komatsu, S. and Kitada, T. (1983), "Statistical Study on Compression Flange Plates", J. Struct. Eng., 109(2), 404-417.
  7. Lam, S.S.E. and Zou, G.P. (2000), "Load increment procedure for post-buckling analysis of laminated plates under in-plane loads by finite strip method", Int. J. Numer. Meth. Eng., 49,797-810.<797::AID-NME980>3.0.CO;2-1
  8. Lee, D.M. and Lee, I. (1995), "Vibration analysis of anisotropic plates with eccentric stiffeners", Comput. Struct., 57(1), 99-105.
  9. Riks, E. (1979), "An incremental approach to the solution of snapping and buckling problems", Int. J. Solids Struct., 15, 529-551.
  10. Timoshenko, S. and Gere, J.M. (1961), Theory of elastic stability, McGraw-Hill, New York, USA.
  11. Von Karman, T., Sechler, E.E. and Donnell, L.H. (1932), "The strength of thin plates in compression", Trans. ASME, 54(2), 53-57.
  12. Yamaki, N. (1959), "Postbuckling behavior of rectangular plates with small initial curvature loaded in edge compression", J. Appl. Mech., 26(3), 407-414.