Title: Pure Mechanics Crack Model for Shear Stress Transfer in Cracked Reinforced Concrete

Author(s): Paolo M. Calvi, Evan C. Bentz, and Michael P. Collins

Publication: Structural Journal

Volume: 114

Issue: 2

Appears on pages(s): 545-554

Keywords: aggregate interlock modeling; crack behavior; cyclic loading; nonlinear response; reinforced concrete; shear strength; structural assessment

DOI: 10.14359/51689460

Date: 3/1/2017

Abstract:
An analytical model is presented that is capable of predicting or assessing the response of cracks in reinforced concrete elements subjected to monotonic, cyclic, or reversed cyclic in-plane shear and normal stresses. The model is formulated in terms of global and local equilibrium, compatibility, and stress-strain relationships. The small number of required empirical parameters are determined from the test results of 14 pre-cracked reinforced concrete panels under uniform shear and uniaxial tensile stresses. The proposed model is shown to capture the important aspects of the response of cracks subjected to complex loading conditions, resulting in improved simulations of crack behavior. In addition, it is shown that the model can be employed to conduct crack-based structural assessments that estimate the stress state of a structure based on crack displacement information collected as part of site-monitoring activities.