Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

A continuity method for bridges constructed with precast prestressed concrete girders

  • Lee, Hwan Woo (Department of Civil Engineering, Pukyong National University) ;
  • Barnes, Robert W. (Department of Civil Engineering, 238 Harbert Engineering Center, Auburn University) ;
  • Kim, Kwang Yang (Department of Civil Engineering, Pukyong National University)
  • Received : 2003.08.25
  • Accepted : 2004.03.30
  • Published : 2004.06.25
⟨ Previous Next ⟩

Abstract

A method of making simply supported girders continuous is described for bridges with spans of 30-45 m. The splicing method takes advantage of an induced secondary moment to transform the self-weight stresses in the precast simply supported girders into values representative of a continuous girder. The secondary moment results from prestressing of continuity tendons and detensioning of temporary tendons in the girders. Preliminary sections are selected for spliced U-girder bridges with a range of span lengths. Use of the proposed technique results in girder depth reductions of 500-800 mm when compared to standard simply supported I-girder bridges. The flexural behavior of an example bridge with 40-m spans is examined to illustrate the necessary considerations for determining the optimum sequence of splicing operations.

Keywords

References

  1. Abdel-Karim, A.M. and Tadros, M.K. (1992), State-of-the-Art of Precast/Prestressed Concrete Spliced-Girder Bridges, Prestressed/Prestressed Concrete Institute (PCI), Chicago.
  2. CEB-FIP (1990), Model Code for Concrete Structures: CEB-FIP International Recommendations, Comite Euro- International du Beton, Paris.
  3. Girgis, A., Sun, C. and Tadros, M.K. (2002), "Flexural strength of continuous bridge girders-Avoiding the penalty in the AASHTO LRFD specifications", Open Forum: Problems and Solutions, PCI Journal, 47(4), 138-141.
  4. Guyon, Y. (1953), Prestressed Concrete, John Wiley & Sons, New York.
  5. Korea Highway Corporation (1996), Typical Drawings for Highway Construction.
  6. Korea Highway Corporation (1997), Drawings for DaeYa Bridge.
  7. KSCE (1996), Highway Bridge Design Specifications, Korea Ministry of Construction and Transportation.
  8. Lee, H.W., Kim, M.S. and Lee, Y.D. (2000), "Structural behaviour of the continuous bridge of two spans spliced by using the secondary moment", Proc. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2000), 1-11.
  9. Pircher, H. (1996), RM-SPACEFRAME rev.5.70, TDV, Graz, Austria.
  10. Ralls, M.L., Ybanez, L. and Panak, J.J. (1993), "The new Texas U-beam bridges: an aesthetic and economical design solution", PCI Journal, 38(5), 20-29.
  11. Ronald, H.D. (2001), "Design and construction considerations for continuous post-tensioned bulb-tee girder bridges", PCI Journal, 46(3), 44-66.
  12. Russell, B.W. (1994), "Impact of high strength concrete on the design and construction of pretensioned girder bridges", PCI Journal, 39(4), 76-89. https://doi.org/10.15554/pcij.07011994.76.89
  13. Tadros, M.K., Ficenec, J.A., Einea, A. and Holdsworth, S. (1993), "A new technique to create continuity in prestressed concrete members", PCI Journal, 38(5), 30-37. https://doi.org/10.15554/pcij.09011993.30.37
  14. VSL (1998), Post-Tensioning System, VSL International LTD., Berne, Switzerland.
  15. Weigel, J.A., Seguirant, S.J., Brice, R. and Khaleghi, B. (2003), "High performance precast, pretensioned concrete girder bridges in Washington state", PCI Journal, 48(2), 28-52. https://doi.org/10.15554/pcij.03012003.28.52

Cited by

  1. Numerical modelling of nonlinear behaviour of prestressed concrete continuous beams vol.15, pp.3, 2015, https://doi.org/10.12989/cac.2015.15.3.373
  2. Flexural analysis of transverse joints of prefabricated T-girder bridge superstructure vol.77, pp.1, 2004, https://doi.org/10.12989/sem.2021.77.1.089