Sensitivity of Shear Strength of Reinforced Concrete and Prestressed Concrete Beams to Shear Friction and Concrete Softening According to Modified Compression Field Theory

摘要

The modified compression field theory (MCFT) is used to study the effect of shear friction and biaxial softening on the computed shear strength of reinforced (RC) or prestressed concrete (PC) beams. A comparison is presented of the various relationships that have been proposed to represent the shear friction within the range of experimen- tal data as found, for example, in high-strength concrete, can lower the shear strength of beams with minimum shear reinforcement by 15 to 25 percent, according to the MCFT.