High-Strength Concrete Short Beams Subjected to Cyclic Shear

by Yan Xiao, Asadollah Esmaeily-Ghasemabadi

See the ACI Paper

Six high-strength concrete model short beams were tested under cyclic shear in a double curvature condition. Experimental parameters included reinforcement configurations, clear span length-to-section depth ratios ranging from 3.0 to 4.0 (shear-span-to-depth ratios of 1.5 to 2.0) and flexural reinforcement ratios ranging from 2.3 to 4.5 percent. The stirrup design was based on the seismic design provisions of the ACI 318-95 Code. All the model beams developed flexural yielding prior to sliding shear failure corresponding to a displacement ductility factor of 3.5 to 6.2. The flexural strength calculated based on the ACI 318-95 Code approach was developed or exceeded. Compared with beams with conventional reinforcement configuration, the model beams with vertically distributed flexural reinforcement developed significantly improved hysteretic performance and ductility.

See other report on Retrofit of Circular Section Bridge Columns