Structural Engineering and Mechanics

  • 제15권6호
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  • Pages.609-628
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  • 2003
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Constitutive law for wedge-tendon gripping interface in anchorage device - numerical modeling and parameters identification

  • Marceau, D. (Department of Applied Sciences, Universite du Quebec a Chicoutimi) ;
  • Fafard, M. (Department of Civil Engineering, Laval University) ;
  • Bastien, J. (Department of Civil Engineering, Laval University)
  • 투고 : 2002.06.12
  • 심사 : 2003.03.04
  • 발행 : 2003.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Mechanical anchorage devices are generally tested in the laboratory and may be analyzed using the finite element method. These devices are composed of many components interacting through diverse contact interfaces. Generally, a Coulomb friction law is sufficient to take into account friction between smooth surfaces. However, in the case of mechanical anchorages, a gripping system, named herein the wedge-tendon system, is used to anchor the prestressing tendon. The wedge inner surface is made of a series of triangular notches designed to grip the tendon. In this particular case, the Coulomb law is not adapted to simulate the contact interface. The present paper deals with a new constitutive contact/gripping law to simulate the gripping effect. A parameter identification procedure, based on experimental results as well as on a finite element/neural network approach, is presented. It is demonstrated that all parameters have been selected in a satisfactory way and that the proposed constitutive law is well adapted to simulate the wedge gripping effect taking place in a mechanical anchorage device.

키워드

참고문헌

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  8. Henchi, K., Fafard, M., Talbot, M. and Langis, D. (1998), "L'application des reseaux neuronaux artificiels pour l'identification et la detection de l'endommagement dans les ponts", Revue europeenne des elements finis, 7, 257-272. https://doi.org/10.1080/12506559.1998.11690478
  9. Langis, D. (1997), "Identification structurale et reseaux neuromimétiques: calibration de modeles elements finis", Master's thesis, Departement de genie civil, Universite Laval, Quebec.
  10. 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. Num. Meth. Engng., 36, 3451-3485. https://doi.org/10.1002/nme.1620362005
  11. Marceau, D. (2001), "Modelisation du contact tridimensionnel en grands deplacements relatifs et son application a l'etude des dispositifs d'ancrages multitorons", Ph.D. thesis, Departement de genie civil, Universite Laval, Quebec.
  12. Marceau, D., Bastien, J., Fafard, M. and Chabert, A. (2001a), "Experimental and numerical studies of monostrand anchorage", Int. J. Struct. Eng. Mech., 12(2), 119-134. https://doi.org/10.12989/sem.2001.12.2.119
  13. Marceau, D., Fafard, M., Bastien, J. and Boudjelal, M. (2001b). "Application des réseaux neuromimétiques la détermination du comportement déformationnel d'un dispositif d'ancrage multitorons", In "Actes du cinquième colloque en calcul des structures", 1, 189-196. Ed. Batoz, Ben Dhi & Chauchot (Tecknea, Toulouse), Giens, France.
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피인용 문헌

  1. Development of Mechanical Anchor for CFRP Tendons Using Integrated Sleeve vol.14, pp.4, 2010, https://doi.org/10.1061/(ASCE)CC.1943-5614.0000096
  2. Sheet Pile Quay Wall Safety: Investigation of Posttensioned Anchor Failures vol.139, pp.9, 2013, https://doi.org/10.1061/(ASCE)GT.1943-5606.0000886
  3. Damage tolerance of an anchor head in a post-tensioning anchorage system vol.13, pp.2, 2006, https://doi.org/10.1016/j.engfailanal.2005.01.012