Steel and Composite Structures

  • 제18권4호
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  • Pages.811-831
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  • 2015
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Strengthening of perforated walls in cable-stayed bridge pylons with double cable planes

  • Cheng, Bin (Department of Civil Engineering, Shanghai Jiao Tong University) ;
  • Wu, Jie (College of Civil Engineering, Tongji University) ;
  • Wang, Jianlei (Department of Civil Engineering, Shanghai Jiao Tong University)
  • 투고 : 2014.04.23
  • 심사 : 2014.09.26
  • 발행 : 2015.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper focuses on the strengthening methods used for improving the compression behaviors of perforated box-section walls as provided in the anchorage zones of steel pylons. Rectangular plates containing double-row continuous elliptical holes are investigated by employing the boundary condition of simple supporting on four edges in the out-of-plane direction of plate. Two types of strengthening stiffeners, named flat stiffener (FS) and longitudinal stiffener (LS), are considered. Uniaxial compression tests are first conducted for 18 specimens, of which 5 are unstrengthened plates and 13 are strengthened plates. The mechanical behaviors such as stress concentration, out-of-plane deformation, failure pattern, and elasto-plastic ultimate strength are experimentally investigated. Finite element (FE) models are also developed to predict the ultimate strengths of plates with various dimensions. The results of FE analysis are validated by test data. The influences of non-dimensional parameters including plate aspect ratio, hole spacing, hole width, stiffener slenderness ratio, as well as stiffener thickness on the ultimate strengths are illustrated on the basis of numerous parametric studies. Comparison of strengthening efficiency shows that the continuous longitudinal stiffener is the best strengthening method for such perforated plates. The simplified formulas used for estimating the compression strengths of strengthened plates are finally proposed.

키워드

참고문헌

  1. AASHTO LRFD Bridge design specifications (2013), American Association of State Highway and Transportation Officials, (6th Edition), 2013 interim revisions.
  2. ANSYS 12 [Computer software] (2009), Ansys Inc., Canonsburg, PA, USA.
  3. Azizian, Z.G. and Roberts, T.M. (1983), "Buckling and elasto-plastic collapse of perforated plates", Proceedings of the International Conference on Instability and Plastic Collapse of Steel Structures, London, UK, August.
  4. Cheng, B. and Li, C. (2012), "Buckling behavior of strengthened perforated plates under shear loading", Steel Compos. Struct., Int. J., 13(4), 367-382. https://doi.org/10.12989/scs.2012.13.4.367
  5. Cheng, B. and Zhao, J. (2010), "Strengthening of perforated plates under uniaxial compression: Buckling analysis", Thin-Wall. Struct., 48(12), 905-914. https://doi.org/10.1016/j.tws.2010.06.001
  6. Cheng, B., Wang, J. and Li, C. (2013a), "Compression behavior of perforated plates in steel tower anchorage zones of cable-stayed bridges", J. Constr. Steel Res., 90, 72-84. https://doi.org/10.1016/j.jcsr.2013.07.020
  7. Cheng, B., Wang, J. and Li, C. (2013b), "Compression tests and numerical analysis of perforated plates containing slotted holes in steel pylons", Thin-Wall. Struct., 67, 129-143. https://doi.org/10.1016/j.tws.2013.02.005
  8. El-Sawy, K.M., Nazmy, A.S. and Martini, M.I. (2004), "Elasto-plastic buckling of perforated plates under uniaxial compression", Thin-Wall. Struct., 42(8), 1083-1101. https://doi.org/10.1016/j.tws.2004.03.002
  9. Eurocode 3 (2006), Design of steel structures, Steel bridge, British Standards Institution; BS EN 1993-2: 2006.
  10. Li, F., He, Y.T., Fan, C.H., Li, H.P. and Zhang, H.X. (2008), "Investigation on three-dimensional stress concentration of LY12-CZ plate with two equal circular holes under tension", Mater. Sci. Eng., 483-484, 474-476. https://doi.org/10.1016/j.msea.2006.08.146
  11. Maiorana, E., Pellegrino, C. and Modena, C. (2008), "Linear buckling analysis of perforated plates subjected to localized symmetrical load", Eng. Struct., 30, 3151-3158. https://doi.org/10.1016/j.engstruct.2008.04.024
  12. Maiorana, E., Pellegrino, C. and Modena, C. (2009), "Non-linear analysis of perforated steel plates subjected to localized symmetrical load", J. Constr. Steel Res., 65, 959-964. https://doi.org/10.1016/j.jcsr.2008.03.018
  13. Moen, C.D. and Schafer, B.W. (2009), "Elastic buckling of thin plates with holes in compression or bending", Thin-Wall. Struct., 47(12), 1597-1607. https://doi.org/10.1016/j.tws.2009.05.001
  14. Muskhelishvili, N.I. (1963), Some basic problems of the mathematical theory of elasticity, Springer, Groningen, Netherlands.
  15. Narayanan, R. and Chow, F.Y. (1984), "Ultimate capacity of uniaxially compressed perforated plates", Thin-Wall. Struct., 2(3), 241-264. https://doi.org/10.1016/0263-8231(84)90021-1
  16. Narayanan, R. and Rockey, K.C. (1981), "Ultimate load capacity of plate girders with webs containing circular cut-outs", Proceedings of Institution of Civil Engineers, 71(3), 845-862. https://doi.org/10.1680/iicep.1981.1822
  17. Paik, J.K. (2007a), "Ultimate strength of perforated steel plates under edge shear loading", Thin-Wall. Struct., 45(3), 301-306. https://doi.org/10.1016/j.tws.2007.02.013
  18. Paik, J.K. (2007b), "Ultimate strength of steel plates with a single circular hole under axial compressive loading along short edges", Ships Offshore Struct., 2(4), 355-360. https://doi.org/10.1080/17445300701623531
  19. Paik, J.K. (2008), "Ultimate strength of perforated steel plates under combined biaxial compression and edge shear loads", Thin-Wall. Struct., 46(2), 207-213. https://doi.org/10.1016/j.tws.2007.07.010
  20. Peterson, R.E. (1974), Stress Concentration Factor, John Wiley and Sons, New York, NY, USA.
  21. Savin, G.N. (1961), Stress Concentration around Holes, Pergamon Press, New York, NY, USA.
  22. Shanmugam, N.E., Thevendran, V. and Tan, Y.H. (1999), "Design formula for axially compressed perforated plates", Thin-Wall. Struct., 34(1), 1-20. https://doi.org/10.1016/S0263-8231(98)00052-4
  23. She, C.M. and Guo, W.L. (2007), "Three-dimensional stress concentrations at elliptic holes in elastic isotropic plates subjected to tensile stress", Int. J. Fatigue, 29(2), 330-335. https://doi.org/10.1016/j.ijfatigue.2006.03.012
  24. Yang, Z., Kim, C.B., Cho, C. and Beom, H.G. (2008), "The concentration of stress and strain in finite thickness elastic plate containing a circular hole", Int. J. Solid. Struct., 45(3-4), 713-731. https://doi.org/10.1016/j.ijsolstr.2007.08.030
  25. Yu, P.S., Guo, W.L., She, C.M. and Zhao, J.H. (2008), "The influence of Poisson's ratio on thickness-dependent stress concentration at elliptic holes in elastic plates", Int. J. Fatigue, 30(1), 165-171. https://doi.org/10.1016/j.ijfatigue.2007.02.007

피인용 문헌

  1. Aerodynamic performance evaluation of different cable-stayed bridges with composite decks vol.34, pp.5, 2015, https://doi.org/10.12989/scs.2020.34.5.699