DOI QR코드

DOI QR Code

Nonlinear finite element based parametric and stochastic analysis of prestressed concrete haunched beams

  • Ozogul, Ismail (Department of Civil Engineering, Graduate School of Natural and Applied Sciences, Gaziantep University) ;
  • Gulsan, Mehmet E. (Department of Civil Engineering, Faculty of Civil Engineering, Gaziantep University)
  • 투고 : 2022.05.06
  • 심사 : 2022.08.10
  • 발행 : 2022.10.25

초록

The mechanical behavior of prestressed concrete haunched beams (PSHBs) was investigated in depth using a finite element modeling technique in this study. The efficiency of finite element modeling was investigated in the first stage by taking into account a previous study from the literature. The first stage's findings suggested that finite element modeling might be preferable for modeling PSHBs. In the second stage of the research, a comprehensive parametric study was carried out to determine the effect of each parameter on PSHB load capacity, including haunch angle, prestress level, compressive strength, tensile reinforcement ratio, and shear span to depth ratio. PSHBs and prestressed concrete rectangular beams (PSRBs) were also compared in terms of capacity. Stochastic analysis was used in the third stage to define the uncertainty in PSHB capacity by taking into account uncertainty in geometric and material parameters. Standard deviation, coefficient of variation, and the most appropriate probability density function (PDF) were proposed as a result of the analysis to define the randomness of capacity of PSHBs. In the study's final section, a new equation was proposed for using symbolic regression to predict the load capacity of PSHBs and PSRBs. The equation's statistical results show that it can be used to calculate the capacity of PSHBs and PSRBs.

키워드

참고문헌

  1. Al-Harthy, A.S. and Frangopol, D.M. (1994), "Reliability assessment of prestressed concrete beams", J. Struct. Eng., 120(1), 180-199. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:1(180).
  2. Biondini, F., Bontempi, F., Frangopol, D.M. and Malerba, P.G. (2004), "Reliability of material and geometrically non-linear reinforced and prestressed concrete structures", Comput. Struct., 82(13-14), 1021-1031. https://doi.org/10.1016/j.compstruc.2004.03.010.
  3. Hou, C., Nakamura, T., Iwanaga, T. and Niwa, J. (2017), "Shear behavior of reinforced concrete and prestressed concrete tapered beams without stirrups", J. JSCE, 5(1), 170-189. https://doi.org/10.2208/journalofjsce.5.1_170.
  4. Mirza, S.A. and MacGregor, J.G. (1979), "Variations in dimensions of reinforced concrete members", J. Struct. Div., 105, 751-766. https://doi.org/10.1061/jsdeag.0005132.
  5. Moreira, L.S., Sousa Jr., J.B.M. and Parente Jr., E. (2018), "Nonlinear finite element simulation of unbonded prestressed concrete beams", Eng. Struct., 170, 167-177. https://doi.org/10.1016/j.engstruct.2018.05.077.
  6. Naaman, A.E. and Siriaksorn, A. (1982), "Reliability of partially prestressed concrete beams at serviceability limit states", PC1 J., 27(6), 66-85. https://doi.org/10.15554/pcij.11011982.66.85
  7. Novak, L., Pan, L., Slowik, O. and Novak, D. (2018), "Advanced reliability and sensitivity analysis of prestressed concrete girders failing in shear", 12th fib International PhD Symposium in Civil Engineering.
  8. Oukaili, N. and Peera, I. (2022), "Behavioral nonlinear modeling of prestressed concrete flexural members with internally unbonded steel strands", Result. Eng., 14, 100411. https://doi.org/10.1016/j.rineng.2022.100411.
  9. Ponnada, M.R. and Geddada, Y. (2022), "Finite-element modeling of partially prestressed concrete beams with unbonded tendon under monotonic loadings", J. Eng., Des. Technol., https://doi.org/10.1108/JEDT-09-2021-0495.
  10. Ponnada, M.R. and Thonangi, R.S. (2015), "Deflections in non-prismatic simply supported prestressed concrete beams", Asian J. Civil Eng. (BHRC), 16(4), 557-565.
  11. Pukl, R., Novak, D. and Bergmeister, K. (2003), "Reliability assessment of concrete structures", Computational Modelling of Concrete Structures (Euro-C 2003), St. Johann in Pongau, Austria.
  12. Raju, P.M., Rajsekhar, K. and Sandeep, T.R. (2014), "Performance of non-prismatic simply supported prestressed concrete beams", Struct. Eng. Mech., 52(4), 723-738. https://doi.org/10.12989/sem.2014.52.4.723.
  13. Taylor, M.A. (1987), "Direct design of nonprismatic prestressed beams: I", J. Struct. Eng., 113(6), 1154-1166. https://doi.org/10.1061/(ASCE)07339445(1987)113:6(1154).
  14. Taylor, M.A. and Amirebralhimi, A. (1987), "Direct design of nonprismatic prestressed beams: II", J. Struct. Eng., 113(6), 1167-1184. https://doi.org/10.1061/(ASCE)0733-9445(1987)113:6(1167).
  15. Yeon, Y.M., Lee, W. and Hong, K.N. (2022), "Finite element analysis of reinforced concrete beams prestressed by fe-based shape memory alloy bars", Appl. Sci., 12(7), 3255. https://doi.org/10.3390/app12073255.