Title:
Experimental Investigation on Shear Enhancement Types for High-Strength Concrete Plates
Author(s):
H. Marzouk and Dajiu Jiang
Publication:
Structural Journal
Volume:
94
Issue:
1
Appears on pages(s):
49-58
Keywords:
shear strength; plates; punching shear; high-strength concrete;
slabs;
DOI:
10.14359/460
Date:
1/1/1997
Abstract:
An experimental investigation was carried out on shear enhancement of high-strength concrete plates for six high-strength concrete slabs to study punching shear capacity and shear enhancement. Five types of different shear reinforcement, namely single bend, U-stirrup, double bend, shear-stud, and T-headed shear reinforcement, were tested and evaluated. The emphasis is placed upon the evaluation of their contribution to punching shear capacity of high-strength concrete plates. Structural behaviors were evaluated in terms of overall load-deflection response, ultimate loading capacity, postultimate loading capacity, ductility, and energy absorption. Failure patterns and strain distribution were also discussed. It has been found that the double bend, shear stud, and T-headed shear reinforcement types were adequate shear reinforcement. The punching failure was eliminated and transformed into flexure failure using the flexure reinforcement. In the meantime the plate ductility and energy absorption were significantly increased with the use of shear reinforcement.