• Latest news

    Latest news

  • Latest news

    Latest news

Structural Concrete, Vol. 6, no. 1, March 2005

Punching resistances of unbonded post-tensioned slabs by decompression methods

R. J. Carvalho Silva, University of Brasilia, Brazil
P. E. Regan, University of Westminster, UK
G. S. S. A. Melo, University of Brasilia, Brazil

This paper presents the direct decompression method for calculating the punching strengths of post-tensioned slabs. It is a method already used for determining the shear strengths of beams. In many respects it is similar to the Fédération Internationale de la Précontrainte (FIP) treatment of punching in post-tensioned slabs, but it is simpler to use. The predictions of two variants of the direct decompression approach, and of the FIP method, are compared with the results of tests of slabs with various arrangements and profiles of tendons. It is shown that the direct method reduces the scatter of ratios of experimental and calculated strengths although all three approaches provide reasonable results. 

fib postal address

Ch. du Barrage, Station 18
CH-1015 Lausanne
Switzerland

Contact

p : +41 21 693 27 47
f : +41 21 693 62 45
e : info@fib-international.org
w : www.fib-international.org

Follow fib

Subscribe our newsletter

News

Follow us on
           

Join the fib

Join the fib