Title:
Inclusion of Smeared Cyclic Bond-Slip Behavior in Two-Dimensional Membrane Elements
Author(s):
Migeum So, Thomas G. Harmon, Gun Jin Yun, and Shirley Dyke
Publication:
Structural Journal
Volume:
106
Issue:
4
Appears on pages(s):
466-475
Keywords:
bond slip; cycle; friction; membrane; reinforced concrete; strain.
DOI:
10.14359/56612
Date:
7/1/2009
Abstract:
In an effort to improve existing two-dimensional (2D) total-strainbased reinforced concrete membrane models, a rational, but highly simplified, smeared bond-slip model was developed. The new model divides a 2D element into bonded and slip regions in the direction perpendicular to the tensile crack orientation. It is essentially a friction model that evaluates maximum frictional stress in a frictional block between the concrete and steel reinforcement. This paper suggests that observed tension stiffening and crack closing behaviors are found to be more complex than the behaviors that existing models are able to represent, particularly under cyclic loading. The proposed model is capable of modeling these behaviors and concrete and steel reinforcement compatibility, including prediction of the crack strains under cyclic loading. The proposed model is validated with cyclic panel test results available in the literature. This paper presents a framework to include smeared bond-slip behavior for 2D total-strain-based models.