Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Web bend-buckling strength of plate girders with two longitudinal web stiffeners

  • Kim, Byung Jun (Dept. of Civil Engineering, Pusan National University) ;
  • Park, Yong Myung (Dept. of Civil Engineering, Pusan National University) ;
  • Kim, Kyungsik (Dept. of Civil Engineering, Cheongju University) ;
  • Choi, Byung H. (Dept. of Civil Engineering, Hanbat National University)
  • Received : 2018.11.26
  • Accepted : 2019.01.21
  • Published : 2019.02.25
⟨ Previous Next ⟩

Abstract

More than one longitudinal web stiffener may be economical in the design of plate girders that have considerably high width-to-thickness ratio of webs. In this study, the bend-buckling strength of relatively deep webs with two horizontal lines of flat plate-shaped single-sided stiffeners was numerically investigated. Linear eigenvalue buckling analyses were conducted for specially selected hypothetical models of stiffened web panels, in which top and bottom junctions of a web with flanges were assumed to have simply supported boundary conditions. Major parameters in the analyses were the locations of two longitudinal stiffeners, stress ratios in the web, slenderness ratios and aspect ratios of web panels. Based on the application of assumptions on the combined locations of the two longitudinal web stiffeners, simplified equations were proposed for the bend-buckling coefficients and compared to the case of one longitudinal stiffener. It was found that bend-buckling coefficients can be doubled by adopting two longitudinal stiffeners instead of one longitudinal stiffener. For practical design purposes, additional equations were proposed for the required bending rigidity of the longitudinal stiffeners arranged in two horizontal lines on a web.

Keywords

Acknowledgement

Supported by : Korea Agency for Infrastructure Technology Advancement (KAIA)

References

  1. AASHTO (2017), LRFD Bridge Design Specifications, 8th Edition, American Association of State Highway and Transportation Officials, Washington D.C., U.S.A.
  2. ABAQUS (2018), Analysis User's Manual, v6.14, Dassault Systems, U.S.A.
  3. Alinia, M.M. and Moosavi, S.H. (2008), "A parametric study on the longitudinal stiffener of web panels", Thin-Wall. Struct., 46(11), 1213-1223. https://doi.org/10.1016/j.tws.2008.02.004
  4. Alinia, M.M. and Moosavi, S.H. (2009), "Stability of longitudinally stiffened web plates under interactive shear and bending forces", Thin-Wall. Struct., 47(1), 53-60. https://doi.org/10.1016/j.tws.2008.05.005
  5. Allison, P.D. (1999), Multiple Regression: A Primer, Sage Publications Ltd., London, U.K.
  6. Azhari, M. and Bradford, M.A. (1993), "Local buckling of I-section beams with longitudinal web stiffeners", Thin-Wall. Struct., 15(1), 1-13. https://doi.org/10.1016/0263-8231(93)90010-8
  7. Bleich, F. (1952), Buckling Strength of Metal Structures, McGraw-Hill.
  8. CEN (2006), Eurocode 3: Design of Steel Structures-Part 1-5: Plated Structural Elements, EN 1993-1-5, European Committee for Standardization, Brussels, Belgium.
  9. Cho, E.Y. and Shin, D.K. (2011), "Elastic web bend-buckling analysis of longitudinally stiffened I-section girders", Int. J. Steel Struct., 11(3), 297-313. https://doi.org/10.1007/s13296-011-3005-z
  10. Cooper, P.B. (1967), "Strength of longitudinally stiffened plate girders", J. Struct. Div., 93(ST2), 419-451. https://doi.org/10.1061/JSDEAG.0001656
  11. Dubas, C. (1948), "Contribution to the study of buckling of stiffened plate", Preliminary Publication, 3rd. Congress, Int. Assoc. Bridge and Struct. Eng, 129.
  12. Frank, K. and Helwig, T.A. (1995), Buckling of Webs in Unsymmetric Plate Girders, Engineering J., Second Quarter, 43-53.
  13. Issa-El-Khoury, G., Linzell, D.G. and Geschwindner, L.F. (2014), "Computational studies of horizontally curved, longitudinally stiffened, plate girder webs in flexure", J. Constr. Steel Res., 93, 97-106. https://doi.org/10.1016/j.jcsr.2013.10.018
  14. Kim, H.S., Park, Y.M., Kim, B.J. and Kim, K. (2018), "Numerical investigation of buckling strength of longitudinally stiffened web of plate girders subjected to bending", Struct. Eng. Mech., 65(2), 141-154. https://doi.org/10.12989/SEM.2018.65.2.141
  15. Maiorana, E., Pellegrino, C. and Modena, C. (2011), "Influence of longitudinal stiffeners on elastic stability of girder webs", J. Constr. Steel Res., 67(1), 51-64. https://doi.org/10.1016/j.jcsr.2010.07.005
  16. Massonnet, C. (1954), Essais de Voilement sur Poutres a Ame Raidle, Publications, Int. Assoc. Bridge and Struct. Eng., Zurich, Switzerland.
  17. Park, Y.M., Lee, K.J., Choi, B.H. and Cho, K.I. (2016), "Modified slenderness limits for bending resistance of longitudinally stiffened plate girders", J. Constr. Steel Res., 122, 354-366. https://doi.org/10.1016/j.jcsr.2016.04.003
  18. Rockey, K.C. (1958), "Web buckling and the design of web-plates", Struct. Eng., 36(2), 45-60.
  19. Rockey, K.C. and Leggett, D.M.A. (1962), "The buckling of a plate girder web under pure bending when reinforced by a single longitudinal stiffener", Proc. Inst. Civil Eng., 21(1), 161-188.
  20. Rockey, K.C. and Cook, I.T. (1965a), "Optimum reinforcement by two longitudinal stiffeners of a plate subjected to pure bending", Inst. J. Sol. Struct., 1(1), 79-92. https://doi.org/10.1016/0020-7683(65)90017-X
  21. Rockey, K.C. and Cook, I.T. (1965b), "The buckling under pure bending of a plate girder reinforced by multiple longitudinal stiffeners", Inst. J. Sol. Struct., 1(2), 147-156. https://doi.org/10.1016/0020-7683(65)90023-5
  22. Timoshenko, S.P. and Gere, J.M. (1963), Theory of Elastic Stability, McGraw-Hill.
  23. Ziemian, R.D. (2010), Guide to Stability Design Criteria for Metal Structures, 8th Edition, John Wiley & Sons.

Cited by

  1. Optimum design of stiffened plates for static or dynamic loadings using different ribs vol.74, pp.2, 2019, https://doi.org/10.12989/sem.2020.74.2.255