Title:
Bond-Slip Model for Generalized Excitations Including Fatigue
Author(s):
Sakul Pochanart and Tom Harmon
Publication:
Materials Journal
Volume:
86
Issue:
5
Appears on pages(s):
465-474
Keywords:
anchorage (structural); beams (supports); bond (concrete to reinforcement); confined concrete; embedment; fatigue (materials); mathematical models; reinforced concrete; reinforcing steels; slippage; stiffness; Materials Research
DOI:
10.14359/2052
Date:
9/1/1989
Abstract:
Presents a model for the local bond-slip relationship in well-confined concrete that can be used for monotonic, cyclic, and fatigue-type loadings. The model is based on load and slip-controlled cyclic and fatigue tests of local bond specimens that are reported in the paper, as well as tests performed at the University of California, Berkeley. The model's parameters are all related to the bar's deformation pattern and can be quantified directly from the physical dimensions of the bar and the concrete strength. A simple damage rule was developed based on the total slip excursion and the amount of friction lost. Additional work is needed to generalize the model for it to be applicable to any scale.