H. Marzouk et Dj. Jiang, FINITE-ELEMENT EVALUATION OF SHEAR ENHANCEMENT OF HIGH-STRENGTH CONCRETE PLATES, ACI structural journal, 93(6), 1996, pp. 667-673
Citations number
6
Categorie Soggetti
Construcion & Building Technology","Material Science
Five types of different shear reinforcement, namely single-bend, U-sti
rrup, double-bend shear stud, and T-headed shear reinforcement are eva
luated numerically. Emphasis is placed on the evaluation of their cont
ribution to the punching shear capacity of high-strength concrete plat
es. The numerical investigation was conducted by using finite element
analysis. The finite element analysis reported herein is an applicatio
n of the nonlinear analysis of reinforced concrete structures using th
ree-dimensional solid finite elements. The purpose of this application
is to demonstrate that three-dimensional elements represent a way to
model out-of-plans shear reinforcement in the slab. Hence, the three-d
imensional 20-node brick element with 2 x 2 x 2 Gaussian integration r
ule over the element faces and a plasticity-based concrete model were
employed in a finite element program. Single-bend and double-bend shea
r reinforcements were modeled with the smeared layer method while the
U-stirrup, shear stud, and T-headed shear reinforcement were depicted
individually in the mesh. Reasonable agreement has been obtained betwe
en the numerically predicted behavior and experimental test results. F
inite element analysis confirmed the experimental test results, that t
he double-bend shear stud, and T-headed reinforcements are the most ef
ficient types of shear reinforcement, and the U-stirrup is the least e
ffective type of shear reinforcement. Transverse shear stress was eval
uated by the finite element analysis in terms of shear stress distribu
tion, and compared with the ultimate punching shear resistance specifi
ed by the ACI 318 design code.