Steel and Composite Structures

  • 제39권4호
  • /
  • Pages.435-451
  • /
  • 2021
  • /
  • 1229-9367(pISSN)
  • /
  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analysis of shear lag effect in the negative moment region of steel-concrete composite beams under fatigue load

  • Zhang, Jinquan (Research Institute of Highway Ministry of Transport) ;
  • Han, Bing (School of Civil Engineering, Beijing Jiaotong University) ;
  • Xie, Huibing (School of Civil Engineering, Beijing Jiaotong University) ;
  • Yan, Wutong (School of Civil Engineering, Beijing Jiaotong University) ;
  • Li, Wangwang (China Academy of Railway Sciences Corporation Limited) ;
  • Yu, Jiaping (School of Civil Engineering, Beijing Jiaotong University)
  • 투고 : 2020.05.20
  • 심사 : 2021.04.20
  • 발행 : 2021.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Shear lag effect was a significant mechanical behavior of steel-concrete composite beams, and the effective flange width was needed to consider this effect. However, the effective flange width is mostly determined by static load test. The cyclic vehicle loading cases, which is more practical, was not well considered. This paper focuses on the study of shear lag effect of the concrete slab in the negative moment region under fatigue cyclic load. Two specimens of two-span steel-concrete composite beams were tested under fatigue load and static load respectively to compare the differences in the negative moment region. The reinforcement strain in the negative moment region was measured and the stress was also analyzed under different loads. Based on the OpenSees framework, finite element analysis model of steel-concrete composite beam is established, which is used to simulate transverse reinforcement stress distribution as well as the variation trends under fatigue cycles. With the established model, effects of fatigue stress amplitude, flange width to span ratio, concrete slab thickness and shear connector stiffness on the shear lag effect of concrete slab in negative moment area are analyzed, and the effective flange width ratio of concrete slab under different working conditions is calculated. The simulated results of effective flange width are compared with calculated results of the commonly used specifications, and it is found that the methods in the specifications can better estimate the shear lag effect in concrete slab under static load, but the effective flange width in the negative moment zone under fatigue load has a large deviation.

키워드

과제정보

This research received funding from the Transportation science and technology program of Hebei Province (Grant No. C18L00580).

참고문헌

  1. AASHTO LRFD (2010), AASHTO LRFD Bridge Design Specifications. American Association of State Highway and Transportation Officials; Washington, D.C, USA.
  2. Ahn I.S., et al. (2004), "Effective flange width provisions for composite steel bridges", Eng. Struct., 26(12), 1843-1851. http://doi.org/10.1016/j.engstruct.2004.07.009.
  3. Aref A.J., et al. (2007), "Effective slab width definition for negative moment regions of composite bridges", J. Bridge Eng., 12(3), 339-349. http://doi.org/10.1061/(asce)1084-0702(2007)12:3(339).
  4. Ballio, G. and Castiglioni, C.A. (1995), "A Unified Approach for the Design of Steel Structures under Low and/or High Cycle Fatigue", J. Constr. Steel Res., 34, 75-101. http://doi.org/10.1016/0143-974X(95)97297-B.
  5. Castro, J.M., Elghazouli, A.Y. and Izzuddin, B.A. (2017), "Assessment of effective slab widths in composite beam", J. Constr. Steel Res., 63, 1317-1327. http://doi.org/10.1016/j.jcsr.2006.11.018.
  6. Chen, J., et al. (2014), "Closed-form solution for shear lag with derived flange deformation function", J. Constr. Steel Res., 102, 104-110. http://doi.org/10.1016/j.jcsr.2014.07.003.
  7. Chen S.S., et al. (2007), "Proposed effective width criteria for composite bridge girders", J. Bridge Eng., 12(3), 325-338. http://doi.org/10.1061/(asce)1084-0702(2007)12:3(325).
  8. Chiewanichakorn, M., et al. (2004), "Effective flange width definition for steel-concrete composite bridge girder", J. Struct. Eng., 130(12), 2016-2031 http://doi.org/10.1061/(asce)0733-9445(2004)130:12(2016).
  9. Dezi, L., et al. (2001), "Time-dependent analysis of shear-lag effect in composite beams", J. Eng. Mech., 127(1), 71-79. http://doi.org/10.1061/(ASCE)0733-9399(2001)127:1(71).
  10. Dezi, L., Gara, F. and Leoni, G. (2006), "Effective slab width in prestressed twin-girder composite decks", J. Struct. Eng., 132(9), 1358-1370. http://doi.org/10.1061/(asce)0733-9445(2006)132:9(1358).
  11. Eurocode 4 (2004), EC4 design of composite steel and concrete structures - part 1.1: general rules and rules for buildings. British Standards Institution.
  12. Gara, F., Ranzi, G. and Leoni, G. (2008), "Analysis of the shear lag effect in composite bridges with complex static schemes by means of a deck finite element", Int. J. Steel Struct., 8(4), 249-260. http://doi.org/10.1109/TITS.2008.2006799.
  13. Gara, F., Leoni, G. and Dezi, L. (2009), "A beam finite element including shear lag effect for the time-dependent analysis of steel-concrete composite decks", Eng. Struct., 31(8), 1888-1902. http://doi.org/10.1016/j.engstruct.2009.03.017.
  14. Gara, F., Ranzi, G. and Leoni, G. (2011), "Partial interaction analysis with shear-lag effects of composite bridges: a finite element implementation for design applications", Adv. Steel Constr., 7(1), 1-16.
  15. Gara F., Ranzi G. and Leoni G. (2011), "Simplified method of analysis accounting for shear-lag effects in composite bridge decks", J. Constr. Steel Res., 67(10), 1684-1697. http://doi.org/10.1016/j.jcsr.2011.04.013.
  16. GB50917 (2013), Code for design of steel and concrete composite bridges, Ministry of Housing and Urban-Rural Development; Beijing, China.
  17. Henriques, D., Goncalves, R. and Camotim, D. (2015), "A physically non-linear GBT-based finite element for steel and steel-concrete beams including shear lag effects", Thin-Wall. Struct., 90, 202-215. http://doi.org/10.1016/j.tws.2015.01.010.
  18. JTG D64 (2015), Specifications for design of highway steel bridge, Ministry of Transport of the People's Republic of China; Beijing, China.
  19. Kristek, V., Evan, H.R. and Ahmad, M.K.M. (1990), "A shear lag analysis for composite box girders", J. Constr. Steel Res., 16, 1-21. http://doi.org/10.1016/0143-974X(90)90002-X.
  20. Lin, W., Yoda, T. and Taniguchi, N. (2013), "Fatigue tests on straight steel-concrete composite beams subjected to hogging moment", J. Constr. Steel Res., 80, 42-56. http://doi.org/10.1016/j.jcsr.2012.09.009.
  21. Macorini, L., Fragiacomo, M., Amadio, C. and Izzuddin, B.A. (2006), "Long-term analysis of steel concrete composite beams: FE modelling for effective width evaluation", Eng. Structures, 28, 1110-1121. http://doi.org/10.1016/j.engstruct.2005.12.002.
  22. Masoudnia, R. (2020), "State of the art of the effective flange width for composite T-beams", Constr. Build. Mater., 244, 118303. http://doi.org/10.1016/j.conbuildmat.2020.118303.
  23. McKenna, F. and Fenves, G.L. (2015), OpenSees 2.5.0, Computer Software. UC Berkeley, Berkeley (CA); 2015. http://opensees.berkeley.edu.
  24. Okui, Y. and Nagai, M. (2007), "Block FEM for time-dependent shear-lag behavior in two I-girder composite bridges", J. Bridge Eng.g, 12(1), 72-79. http://doi.org/10.1061/(ASCE)1084-0702(2007)12:1(72).
  25. Reissner, E. (1946), "Analysis of shear lag in box beams by the principle of minimum potential energy", Quarterly Appl. Math., 5, 267-278. http://doi.org/10.1090/qam/17176.
  26. Sun, F.F. and Bursi, O. (2005), "Displacement-based and two-field mixed variational formulation for composite beams with shear lag", J. Mech. Eng., 131(2), 199-210. https://doi.org/10.1061/(ASCE)0733-9399(2005)131:2(199)
  27. Tevatia, A. and Srivastava, S.K. (2015), "Modified shear lag theory based fatigue crack growth life prediction model for short-fiber reinforced metal matrix composites", Int. J. Fatigue, 70, 123-129. http://doi.org/10.1016/j.ijfatigue.2014.09.004.
  28. Uriz, P.(2005), "Towards earthquake resistant design of concentrically braced steel structures, Doctoral Dissertation, Structural Engineering, Mechanics, and Materials", University of California, Berkeley, 2005.
  29. Wang, J.J., Liu, C., Fan, J.S., Hajjar, J.F. and Nie, X. (2019), "Triaxial Concrete Constitutive Model for Simulation of Composite Plate Shear Wall-Concrete Encased: Thuc3", J. Struct. Eng., 145(9), 04019088. http://doi.org/10.1061/(ASCE)ST.1943-541X.0002355.
  30. Wang, Y.H. and Nie, J.G. (2015), "Effective flange width of steel-concrete composite beam with partial openings in concrete slab", Mater. Struct., 48, 3331-3342. http://doi.org/10.1617/s11527-014-0402-8.
  31. Yan, W.T., Han, B., Zhu, L., Jiao, Y.Y. and Xie, H.B. (2019), "A fiber beam element model for elastic-plastic analysis of girders with shear lag effects", Steel Compos. Struct., 32(5), 657-670. http://doi.org/10.12989/scs.2019.32.5.657.
  32. Yuan, H., et al. (2016), "Element-based effective width for deflection calculation of steel-concrete composite beams", J. Constr. Steel Res., 121, 163-172. http://doi.org/10.1016/j.jcsr.2016.02.010.
  33. Zhang, Y.L., et al. (2010), "Study of the shear lag effect and the effective flange width at negative moment zone of steel-concrete composite beams", Eng. Mech., 27, 178-185. (in Chinese). http://doi.org/10.3724/SP.J.1011.2010.01138.
  34. Zhou, W., Jiang, L. and Yu, Z. (2013), "Analysis of free vibration characteristic of steel-concrete composite box-girder considering shear lag and slip", J. Central South Univ., 20(9), 2570-2577. http://doi.org/10.1007/s11771-013-1770-x.
  35. Zhu, L., et al. (2015), "Simplified analysis method accounting for shear-lag effect of steel-concrete composite decks", J. Constr. Steel Res., 115, 62-80. http://doi.org/10.1016/j.jcsr.2015.08.020.