Title:
Toward an Improved Understanding of Shear-Friction Behavior
Author(s):
Kent A. Harries, Gabriel Zeno, and Bahram Shahrooz
Publication:
Structural Journal
Volume:
109
Issue:
6
Appears on pages(s):
835-844
Keywords:
coefficient of friction; crack opening; interface; shear friction
DOI:
10.14359/51684127
Date:
11/1/2012
Abstract:
Through an in-depth review of previous work complemented by an experimental study, the nature of shear-friction behavior is studied. It is shown that the ACI 318-08 and AASHTO approaches to shear friction do not capture the actual behavior and imply incorrect limit states. A simple explanatory model and modifications to the form of empirical design equations are proposed. A large number of parameters affect shear-friction performance. This study does not attempt to address them all but rather illustrates the fundamental shear-friction behavior. This study does, however, consider the use of high-yield-strength reinforcing steel (ASTM A1035/A1035M). In doing so, the serious limitations of the design equations are illustrated. Additionally, this study is the only known study of shear-friction behavior to include high-strength steel.