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Techno Press

Structural Engineering and Mechanics   Volume 12, Number 2, August 2001, pages 119-134
DOI: http://dx.doi.org/10.12989/sem.2001.12.2.119
 
Experimental and numerical studies of mono-strand anchorage
D. Marceau, J. Bastien, M. Fafard(Canada) and A. Chabert(France)

 
Abstract     [Full Text]
    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.
 
Key Words
    anchorage; contact finite element; friction; strand; wedge; yielding.
 
Address
D. Marceau, J. Bastien and M. Fafard, GIREF Research Center, Laval University, Quebec, Canada, G1K 7P4
A. Chabert, Laboratoire Centrale des Ponts et Chaussees, 75732 Paris CEDEX 15, France
 

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