Structural Engineering and Mechanics

  • 제12권2호
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  • Pages.119-134
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  • 2001
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental and numerical studies of mono-strand anchorage

  • Marceau, D. (GIREF Research Center, Laval University) ;
  • Bastien, J. (GIREF Research Center, Laval University) ;
  • Fafard, M. (GIREF Research Center, Laval University) ;
  • Chabert, A. (Laboratoire Centrale des Ponts et Chaussees)
  • 발행 : 2001.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with an experimental and numerical study of a mono-strand wedge anchor head mechanism. First, the experimental program is presented and monitored data such as wedge slippage, anchor deflection and strain distributions along external peripheral surfaces of the anchor head are presented and discussed. In accordance with the experimental set up, these data concern only the global behaviour of the mechanism and cannot provide valuable information such as internal stress-strains distributions, stress concentrations and percentage of yielded volume. Therefore, the second part of this paper deals with the development of an efficient numerical finite element model capable of providing mechanism of the core information. The numerical model which includes all kinematics/material/contact non-linearities is first calibrated using experimental data. Subsequently, a numerical study of the anchorage mechanism is performed and its behaviour is compared to the behaviour of a slightly geometrically modified mechanism where the external diameter has been increased by 5 mm. Finally, different topics influencing the anchorage mechanism behaviour are addressed such as lubrication and wedge shape.

키워드

참고문헌

  1. AASHTO (1994), AASHTO LRDF Bridge Design Specification, American Association of State Highway andTransportation Officials, Section 5, U.S.A.
  2. Bastien, J. (1992), "Comportement des tetes d'ancrage mono et multi-torons: Etude experimentale et etude parélements finis", Ph.D. thesis, Departement de Génie Civil, Universite Laval, Quebec.
  3. Bastien, J., Chabert, A. and Picard, A. (1991), "Behaviour of external anchor heads", Int. Symposium on ModernApplication of Prestressed Concrete, International Academic Publisher, Beijing, China, 1, 182-189.
  4. BPEL (1990), Regles techniques de conception et de calcul des ouvrages et constructions en beton precontraintsuivant la méthode des etats limites, Marché public des travaux, Fascicule no. 5, Cahier des clauses generales,France.
  5. CAN/CSA-S6-88 (1988), Calcul des ponts-routes, Une norme Nationale du Quebec, Association Canadienne deNormalisation, Ont. Canada.
  6. Crisfield, M. A. (1991), Non-linear Finite Element Analysis of Solids and Structures, John Wiley and Sons Ltd,1.
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  8. Laursen, T. A. (1994), "The convected description in large deformation frictional contact problem", Int. J. SolidsStructures, 31, 669-681. https://doi.org/10.1016/0020-7683(94)90145-7
  9. Laursen, T. A. and Simo, J. C. (1993), "A continuum-based finite element formulation for the implicit solution of multibody, large deformation frictional contact problem", Int. J. Numer. Meth. Eng., 36, 3451-3485. https://doi.org/10.1002/nme.1620362005
  10. Marceau, D. (2001), Modélisation du contact tridimensionnel en grands deplacements relatifs et son application a l'etude des dispositifs d'ancrages multi-torons, Ph.D. thesis, Departement de Genie Civil, Universite Laval,Quebec.
  11. Marceau, D. and Fafard, M. (1993), "Modelisation du contact bidimensionnel et axisymetrique en grandsdeplacements relatifs et son application a l'etude des tetes d'ancrage mono-toron", Technical Report,Departement de, Genie Civil, Universite Laval, Quebec, GCT-93-09.
  12. SETRA (1990), Precontrainte Exterieure, Guide Technique, SETRA, France.

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