Computers and Concrete

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Determination of minimum depth of prestressed concrete I-Girder bridge for different design truck

  • Atmaca, Barbaros (Karadeniz Technical University, Department of Civil Engineering)
  • Received : 2019.02.18
  • Accepted : 2019.08.27
  • Published : 2019.10.25
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Abstract

The depth of superstructure is the summation of the height of girders and the thickness of the deck floor. In this study, it is aim to determine the maximum span length of girders and minimum depth of the superstructure of prestressed concrete I-girder bridge. For this purpose the superstructure of the bridge with the width of 10m and the thickness of the deck floor of 0.175m, which the girders length was changed by two meter increments between 15m and 35m, was taken into account. Twelve different girders with heights of 60, 75, 90, 100, 110, 120, 130, 140, 150, 160, 170 and 180 cm, which are frequently used in Turkey, were chosen as girder type. The analyses of the superstructure of prestressed concrete I girder bridge was conducted with I-CAD software. In the analyses AASHTO LRFD (2012) conditions were taken into account a great extent. The dead loads of the structural and non-structural elements forming the bridge superstructure, prestressing force, standard truck load, equivalent lane load and pedestrian load were taken into consideration. HL93, design truck of AASHTO and also H30S24 design truck of Turkish Code were selected as vehicular live load. The allowable concrete stress limit, the number of prestressed strands, the number of debonded strands and the deflection parameters obtained from analyses were compared with the limit values found in AASHTO LRFD (2012) to determine the suitability of the girders. At the end of the study maximum span length of girders and equation using for calculation for minimum depth of the superstructure of prestressed concrete I-girder bridge were proposed.

Keywords

References

  1. AASHTO (2012), LRFD Bridge Design Specifications, 6th Ed., Washington, D.C.
  2. Atmaca, B. (2018), "Examination of the calculation and design of prestressed girder vridge's superstructure and development of computer program", Ph.D. Dissertation, Karadeniz Technical University, Trabzon, Turkey.
  3. Atmaca, B. and Ates, S. (2017), "Camber calculation of prestressed concrete I girder considering geometric nonlinearity", Comput. Concrete, 19(1), 1-6. https://doi.org/10.12989/cac.2017.19.1.001.
  4. Bujnakova, P. and Strieska, M. (2017), "Development of precast concrete bridges during the last 50 years in Slovakia", Procedia Eng., 192, 75-79. https://doi.org/10.1016/j.proeng.2017.06.013.
  5. Carroll, J.C., Cousins, T.E. and Roberts-Wollmann, C.L. (2017), "The use of grade 300 prestressing strand in pretensioned, prestressed concrete beams", PCI J., 62(1), 49-65.
  6. Cohn, M.Z. and Lounis, Z. (1994), "Optimal design of structural concrete bridge systems", J. Struct. Eng., 120(9), 2653-2674. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:9(2653).
  7. Han, S., Lee, D.H., Oh, J., Kim, K.S. and Yi, S. (2016), "Transfer lengths of pretensioned concrete members reinforced with 2400 MPa high-strength prestressing tendons", Comput. Concrete, 18(4), 779-792. https://doi.org/10.12989/cac.2016.18.4.779.
  8. Lou, T., Lopes, S.M.R. and Lopes, A.V. (2015), "Numerical modelling of nonlinear behaviour of prestressed concrete continuous beams", Comput. Concrete, 15(3), 373-389. https://doi.org/10.12989/cac.2015.15.3.373.
  9. Lounis, Z. and Cohn, M.Z. (1996), "An approach to preliminary design of precast pretensioned concrete bridge girders" Comput. Aid. Civil Infrastr. Eng., 11, 381-393. https://doi.org/10.1111/j.1467-8667.1996.tb00351.x.
  10. Marquez, J., Jauregui, D.V., Weldon, B.D. and Newtson, C.M. (2016), "Simplified procedure to obtain LRFD preliminary design charts for simple-span prestressed concrete bridge girders" Prac. Period. Struct. Des. Constr., 21(1), 1-6. https://doi.org/10.1061/(ASCE)SC.1943-5576.0000274.
  11. Mercan, B., Stolarski, H.K. and Schultz, A.E. (2016), "Arc-length and explicit methods for static analysis of prestressed concrete members", Comput. Concrete, 18(1), 17-37. https://doi.org/10.12989/cac.2016.18.1.017.
  12. Moravcik, M. (2013), "Modified system of prestressing for new precast girders developed for highway bridges", Procedia Eng., 65, 236-241. https://doi.org/10.1016/j.proeng.2013.09.036.
  13. Park, M., Lee, D.H., Ju, H., Hwang, J., Choi, S. and Kim, K.S. (2015), "Minimum shear reinforcement ratio of prestressed concrete members for safe design", Struct. Eng. Mech., 56(2), 317-340. https://doi.org/10.12989/sem.2015.56.2.317.
  14. PCI (Precast/Prestressed Concrete Institute) (2011), PCI Bridge Design Manual, 3rd Ed., Chicago.

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