Structural Engineering and Mechanics

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The bending-shear-torsion performance of prestressed composite box beam

  • Wei, Hu S. (Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute) ;
  • Yu, Zhao K. (Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute) ;
  • Jie, Wei C. (Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute)
  • Received : 2015.09.02
  • Accepted : 2017.04.08
  • Published : 2017.06.10
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Abstract

To study the mechanical performances of prestressed steel-concrete composite box beam under combination of bending-shear-torsion, nine composite beams with different ratio of torsion to bending were designed. Torsion was applied to the free end of the beam with jacks controlled accurately with peripherals, as well as concentrated force on the mid-span with jacks. Based on experimental data and relative theories, mechanical properties of composite beams were analyzed, including torsional angle, deformation and failure patterns. The results showed that under certain ratio of torsion to bending, cracking and ultimate torsion increased and reached to its maximum at the ratio of 2. Three phases of process is also discussed, as well as the conditions of each failure mode.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. Bernardo, L.F.A., Andrade, J.M.A. and Lopes, S.M.R. (2012), "Modified variable angle truss-model for torsion in reinforced concrete beams", Mater. Struct., 45(12), 1877-1902. https://doi.org/10.1617/s11527-012-9876-4
  2. Davidson, B.D. and Felipe O. Sediles (2011), "Mixed-mode I-IIIII delamination toughness determination via a shear-torsionbending test", Compos. Part A: Appl. Sci. Manufact., 43(6), 589-603.
  3. Hu, S.W., Zhao, K.Y. and Yu, J. (2016), "Whole process of prestressed steel-concrete composite box beam under bendingtorsion[J]", Sichuan Build. Sci., 42(3), 1-6.
  4. Jeng, C. and Hsu, T.T.C. (2009), "A softened membrane model for torsion in reinforced concrete members", Eng. Struct., 31(9), 1944-1954. https://doi.org/10.1016/j.engstruct.2009.02.038
  5. Ju, H., Lee, D.H., Hwang, J.H., Kang, J.W., Kim, K.S. and Oh, Y.H. (2013), "Torsional behavior model of steel-fiberreinforced concrete members modifying fixed-angle softendtruss model", Compos. Part B:Eng., 45(1), 215-231. https://doi.org/10.1016/j.compositesb.2012.09.021
  6. Kuo, W.W. and Hsu, T.T.C. (2014), "Hwang Shyh Jiann, Shear strength of reinforced concrete beams", ACI Struct. J., 111(4), 809-818.
  7. Lee, U. and Jang, I.J. (2010), "Spectral element model for axially loaded bending-shear-torsion coupled composite Timoshenko beams", Compos. Struct., 92(12), 2860-2870. https://doi.org/10.1016/j.compstruct.2010.04.012
  8. Mihaylov Boyan, I., Bentz Evan, C. and Collions Micheal P. (2013), "Two-parameter kinematic theory for shear behavior of deep beams[J]", ACI Struct. J., 110(3), 447-455.
  9. Mullapudi, T.R.S. and Ashraf Ayoub (2013), "Analysis of reinforced concrete columns subjected to combined axial, flexure, shear and torsional loads", J. Struct. Eng., 139(4), 561-573. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000680
  10. Nie, J.G., Xiao, Y. and Che, L. (2004), "Experimental studies on shear strength of composite steel-concrete beams", J. Struct. Eng., ASCE, 130(8), 1206-1213. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:8(1206)
  11. Nie, J.G., Cai, C.S., Zhou, T.R. and Li, Y. (2007), "Experimental and analytical study of prestressed steel-concrete composite beams considering slip effect", J. Struct. Eng., 133(4), 530-540. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:4(530)
  12. Onsongo, W.M. (2007), "Failure interaction curves for combined loading involving torsion, bending and axial loading", J. South African Inst. Civ. Eng., 49(1), 17-24.
  13. Rahal, K.N. (2013), "Torsional strength of normal and high strength reinforced concrete beams", Eng. Struct., 56(10), 2206-2216. https://doi.org/10.1016/j.engstruct.2013.09.005
  14. Rizov, V. and Miadensky, A. (2012), "Analysis of mode II crack in bilayered composite beam", J. Theo. Appl. Mech., 42(2), 67-78.
  15. Thivya, J., Malathy, R. and Tensing, D. (2016), "Behavior of composite beams under combined bending and torsion[J]", Int. J. Adv. Eng. Technol., 563(2), 563-566.
  16. Tusnin, A.R. and Milan Prokic (2015), "Selection of parameters for I-beam experimental model subjected to bending and torsion", Procedia Eng., 111(7), 789-796. https://doi.org/10.1016/j.proeng.2015.07.146
  17. Wan, H.X. and Mahendran, M. (2015), "Bending and torsion of hollow flange channel beams", Eng. Struct., 84(2), 300-312. https://doi.org/10.1016/j.engstruct.2014.11.010