Structural Engineering and Mechanics

  • 제66권4호
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  • Pages.423-438
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  • 2018
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Finite element and design code assessment of reinforced concrete haunched beams

  • Gulsan, Mehmet Eren (Civil Engineering Department, Gaziantep University, University Avenue-Central Campus) ;
  • Albegmprli, Hasan M. (Department of Building & Construction Engineering, Northern Technical University, Engineering Technical College of Mosul) ;
  • Cevik, Abdulkadir (Civil Engineering Department, Gaziantep University, University Avenue-Central Campus)
  • 투고 : 2017.10.18
  • 심사 : 2018.02.19
  • 발행 : 2018.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This pioneer study focuses on finite element modeling and numerical modeling of three types of Reinforced Concrete Haunched Beams (RCHBs). Firstly, twenty RCHBs, consisting of three types, and four prismatic beams which had been tested experimentally were modeled via a nonlinear finite element method (NFEM) based software named as, ATENA. The modeling results were compared with experimental results including load capacity, deflection, crack pattern and mode of failure. The comparison showed a good agreement between the results and thus the model used can be effectively used for further studies of RCHB with high accuracy. Afterwards, new mechanism modes and design code equations were proposed to improve the shear design equation of ACI-318 and to predict the critical effective depth. These equations are the first comprehensive formulas in the literature involving all types of RCHBs. The statistical analysis showed the superiority of the proposed equation to their predecessors where the correlation coefficient, $R^2$ was found to be 0.89 for the proposed equation. Moreover, the new equation was validated using parametric and reliability analyses. The parametric analysis of both experimental and predicted results shows that the inclination angle and the compressive strength were the most influential parameters on the shear strength. The reliability analysis indicates that the accuracy of the new formulation is significantly higher as compared to available design equations and its reliability index is within acceptable limits.

키워드

참고문헌

  1. ACI 318 (2014), Building Code Requirements for Structural Concrete and Commentary, American Concrete Institute; Farmington Hills, Michigan, U.S.A.
  2. ASCE 7-98 (1998), Minimum Design Load for Buildings and Other Structures, Washington, U.S.A.
  3. Albegmprli, H.M., Cevik, A., Gulsan, M.E. and Kurtoglu, A.E. (2015), "Reliability analysis of reinforced concrete haunched beams shear capacity based on stochastic nonlinear FE analysis", Comput. Concrete, 15(2), 259-277. https://doi.org/10.12989/cac.2015.15.2.259
  4. Albegmprli, H.M. (2017), "Experimental investigation and stochastic FE modeing of reinforced concrete haunched beams", Ph.D. Dissertation, Gaziantep University, Gaziantep, Turkey.
  5. Cervenka, V., Jendele, L. and Cervenka, J. (2016), ATENA Program Documentation: Theory, Cervenka Consulting, Prague, Czech Republic.
  6. Cervenka, V. (1985), "Constitutive equations for cracked concrete", ACI J. Proc., 82(6), 877-882.
  7. Chen, W.F. and Saleeb, A.F. (2013), Constitutive Equations for Engineering Materials, Elsevier, Amsterdam, the Netherlands.
  8. Choi, B.S., Scanlon, A. and Johnson, P.A. (2004), "Monte Carlo simulation of immediate and time-dependent deflections of reinforced concrete beams and slabs", ACI Struct. J., 101(5), 633-641.
  9. Debaiky, S.Y. and El-Niema, E.I. (1982), "Behavior and strength of reinforced concrete haunched beams in shear", ACI Struct. J., 79(3), 184-194.
  10. DIN 1045-01 (2001), Tragwerke aus Beton, Stahlbeton und Spannbeton, Teil 1Bemessungund Konstruktion, Beuth Verlag GmbH, Berlin, Germany.
  11. El-Niema, E.I. (1988), "Investigation of concrete haunched tbeams under shear", ASCE-J. Struct. Eng., 114(4), 917-930. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:4(917)
  12. EN 1990 (2002), Basis of Structural Design, European Committee for Standardization, European Union.
  13. Godinez-Dominguez, E.A., Tena-Colunga, A. and Juarez-Luna, A. (2015), "Nonlinear finite element modeling of reinforced concrete haunched beams desihned to develop a shear failure", Eng. Struct., 105, 99-122. https://doi.org/10.1016/j.engstruct.2015.09.023
  14. Hans, I.A.A., Arturo, T.C. and Alejandro, G.V. (2013), "Behavior of reinforced concrete haunched beams subjected to cyclic shear loading", Eng. Struct., 49, 27-42. https://doi.org/10.1016/j.engstruct.2012.10.037
  15. Hasofer, A.M. and Lind, N.C. (1974), "An exact and invariant second-moment code format", J. Eng. Mech. Div., 100(1), 111-121.
  16. Hordjik, D.A. (1991), "Local approach to fatigue of concrete", Ph.D. Dissertation, Delft University of Technology, the Netherlands.
  17. MacLeod, I.A. and Houmsi, A. (1994), "Shear strength of haunched beams without shear reinforcement", ACI Struct. J., 91(1), 79-89.
  18. Nghiep, V.H. (2010), "Shear design of straight and haunched concrete beams without stirrups", Ph.D. Dissertation, Technischen Universitat Hamburg, Hamburg, Germany.
  19. Rombach, G.A., Kohl, M. and Nghiep, V.H. (2011), "Shear design of concrete members without shear reinforcement-a solved problem?", Proc. Eng., 14, 134-140. https://doi.org/10.1016/j.proeng.2011.07.015
  20. Stefanou, G.D. (1983), "Shear resistance of reinforced concrete beams with non-prismatic section", Eng. Fract. Mech., 18(4), 643-666. https://doi.org/10.1016/0013-7944(83)90057-7
  21. Strauss, A., Mordini, A. and Bergmeister, K. (2006), "Nonlinear finite element analysis of reinforced concrete corbels at both deterministic and probabilistic levels", Comput. Concrete, 3(2), 123-144. https://doi.org/10.12989/cac.2006.3.2_3.123
  22. Szerszen, M.M. and Novak, A.S. (2003), "Calibration of design code of buildings (ACI 318): Part 2-Reliability analysis and resistance factors", ACI Struct. J., 100(3), 383-391.
  23. Tena-Colunga, A., Urbina-Californias, L.A. and Archundia-Aranda, H.I. (2017a), "Assessment of the shear strength of continous reinforced concrete haunched beams based upon cyclic testing", J. Build. Eng., 11, 187-204. https://doi.org/10.1016/j.jobe.2017.04.018
  24. Tena-Colunga, A., Urbina-Californias, L.A. and Archundia-Aranda, H.I. (2017b), "Cyclic behavior of continuous reinforced concrete haunched beams with transverse reinforcement designed to fail in shear", Constr. Build. Mater., 151, 546-562. https://doi.org/10.1016/j.conbuildmat.2017.05.123
  25. Tena-Colunga, A., Hans, I.A. and Oscar, M.G. (2008), "Behavior of reinforced concrete haunched beam subjected to to static shear loading", Eng. Struct., 30(2), 478-492. https://doi.org/10.1016/j.engstruct.2007.04.017
  26. Vorechovsky, M. (2004), "Stochactic fracture mechanics and size effect", Ph.D. Dissertation, Brno University of Technology, Czech Republic.
  27. Yuksel, S.B. and Yarar, A. (2015), "Neuro-fuzzy and artificial neural networks modeling of uniform temperature effects of symmetric parabolic haunched beams", Struct. Eng. Mech., 56(5), 787-796. https://doi.org/10.12989/sem.2015.56.5.787
  28. Zanuy, C., Gallego, J.M. and Albajar, L. (2015), "Fatigue behavior of reinforced concrete haunched beams without stirrups", ACI Struct. J., 112(3), 371-381.