Computers and Concrete

  • 제1권3호
  • /
  • Pages.249-260
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  • 2004
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analysis of stress distribution in anchorage zones of pretensioned beams

  • Gens, F. (Departement de Mecanique des Materiaux et Structures, Universite de Liege) ;
  • Dotreppe, J.C. (Departement de Mecanique des Materiaux et Structures, Universite de Liege)
  • 투고 : 2003.12.19
  • 심사 : 2004.06.12
  • 발행 : 2004.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

The stress transmission mechanism in pretensioned concrete beams, though very interesting from an economical point of view, is very complex, integrating various phenomenons such as sliding, bond, bursting. For long the complexity of this mechanism has led engineers to provide a massive rectangular anchorage zone at each end of the beam. The necessity of using such a concrete reinforcement is certainly unquestionable in post-tensioned beams. However in pretensioned elements the stresses induced in concrete in the anchorage zone are smaller than in post-tensioned elements. In this article the stress field in the end zone is calculated numerically and from this analysis the possible reduction of the cross-section of the anchorage block is examined.

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참고문헌

  1. Abeles, P. W., Bamdhan-Roy, B. K., Tumnem, F. H. (1976), Prestressed Concrete Designer's Handbook Second edition, Viewpoint Publication Cement and Concrete Association, Wexham Springs.
  2. FlP report(1982), "Report on prestressing steel : Test for the determination of tendon transmission length under static conditions", Cement and Concrete Association, Wexham Springs.
  3. Guyon, Y.(1951), Beton precontraint, etude theorique et experimentale -Tome 1, Eyrolles, Paris.
  4. Guyon, Y.(1968), Constructions en beton precontraint, classes etats limites -Tome 2: etude de la poutre, Eyrolles, Paris.
  5. Leonhardt, F.(1964), Prestressed Concrete, Design and Construction, Second edition, Wilhelm Ernst & Sohn, Berlin Munich.
  6. Lin, T. Y.(1963), Design of Prestressed Concrete Structures, Second edition, John Wiley & Sons, New York.
  7. Nilson, A. H. (1987), Design of Prestressed Concrete, Second edition, John Wiley & Sons, New York.
  8. Oh, B. H. and Kim, E. S. (2000), "Realistic evaluation of transfer lengths in pretensioned, prestressed concrete members", ACI Struct. J., 97(6), 821-830.
  9. Lundgren, K., Gustavson, R. and Magnusson, J.(2002), "Finite element modelling as a tool to understand the bond mechanisms", Bond in Concrete from Research to Standards, Fib, Budapest, 27 -34.
  10. Ozbolt, J., Lettow, S. and Kozar, l.(2002), "Discrete bond element for 3D finite element analysis of reinforced concrete structures", Bond in Concrete from Research to Standards, Fib, Budapest, 9 -19.
  11. Shahawy, M. and Cai, C. S.(2001), "Enhancement of the performance of prestressed concrete girders using strand anchorage", PCI Journal, 46(5), 82-88.
  12. Hegger, J., Kommer, B. and Nitsch, A.(2002), "Bond anchorage of pretensioned tendons in precast elements made out of high performance concrete (HPC)", Bond in Concrete from Research to Standards, Fib, Budapest, 103 -110.
  13. Marshall, W. T. and Mattock, A. H. (1962), "Control of horizontal cracking in the ends of pretensioned prestressed concrete girders", PCI Journal, 7, 56-74. https://doi.org/10.15554/pcij.10011962.56.74