Shear strength of reinforced concrete: Part II - Beams subjected to shear, bending moment, and axial load

A companion paper presented a simple, noniterative method for predicting the ultimate strength and the mode of failure of I reinforced concrete membrane elements subjected to pure shear. This paper extends the applicability of the method to beams subjected to shear, acting in combination with bending moment and axial tension or compression. To check the adequacy of this simplified approach, shear force-bending moment-axial load interaction diagrams calculated using the proposed method are compared to those calculated using the modified compression field theory, and good agreement is observed. The calculations of the method are also checked against the experimental results of 161 beam tests available in the literature, and good agreement is found again. The simplicity of the method is illustrated by an example.