TITLE:
Parametric Analysis on the Optimal Dimensions of Steel Sleeve in Swaging Type Anchorage for CFRP Tendon
AUTHORS:
Jae Yoon Kang, Jong Sup Park, Woo Tai Jung, Moon Seoung Kum
KEYWORDS:
CFRP Tendon; Prestressing; Swaging Type Anchorage; Swaging Sleeve
JOURNAL NAME:
Engineering,
Vol.5 No.11,
November
6,
2013
ABSTRACT: This paper presents the parametric analysis conducted to
derive the optimal dimensions of the steel sleeve necessary to secure the bond
performance of the swaging type anchorage for CFRP tendon with diameter of 5
mm. To that goal, finite element analysis is performed on the parameters
determining the dimensions of the sleeve like the thickness and inner diameters
of the sleeve. The results show that a constant swaging pressure of about 450
MPa on the mean is distributed in the sleeve when the thickness ratio of the
stress relief zone to the effective swaging zone of the sleeve is larger than
1.1 and that the swaging pressure tends to reduce linearly as much as this
thickness ratio becomes smaller than 1.1. The pressure varies within a range of
about 30% according to the change in the inner diameter of the sleeve whereas
varies within a range less than 10% according to the change in the inner
diameter when the thickness ratio is larger than 1.1. Finally, the optimal
dimensions of the steel tube sleeve enabling to secure an anchor force larger
than the rupture strength of the CFRP tendon with diameter of 5 mm are
determined based upon the results of the parametric analysis.