<p>To study the axial-shear-flexure-interactive (ASFI) and shear strength behavior of reinforced concrete (RC) members with low-bond reinforcement, 20 high-strength fly ash concrete beams with low-bond high-strength SBPDN 1275/1420 rebars were fabricated for testing. The experimental results indicated that the degradation in the shear strength carried by the concrete (<i>V</i>_<i>c</i>) controlled the overall shear strength behavior of the test beams. The <i>V</i>_<i>c</i> of the test beams with shear span ratios greater than 1.5 eventually reduced to zero owing to the development of shear cracks. A calculation method for predicting the ASFI behavior of RC members was proposed to predict the lateral behavior without numerous mathematical iterations, which accounted for deformations due to flexure, steel-bond slip, and shear. An analytical model was derived to calculate the nominal shear strength using the shear friction mechanism and the Mohr–Coulomb failure criterion. Compared to the models currently proposed in design provisions, this model exhibited better alignment with the experimental results. A new model describing the degradation of shear strength due to shear cracks was also proposed, which incorporated the effect of the longitudinal rebar bond strength on the drift at which the nominal shear strength begins to deteriorate. Comparisons between the predicted and experimental results of RC members with different structural variables indicated that the ASFI calculation program and shear strength model accurately predicted the lateral behavior, shear failure, and post-failure behavior.</p>