Structural Engineering and Mechanics

  • 제17권6호
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  • Pages.879-898
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  • 2004
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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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)
  • 투고 : 2003.08.25
  • 심사 : 2004.03.30
  • 발행 : 2004.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

참고문헌

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  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
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피인용 문헌

  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