NEHRP Clearinghouse
- Title
- Analytical Model for Concrete Anchorages of Reinforced Bars Under Generalized Excitations.
- File
- PB83169532.pdf
- Author(s)
- Ciampi, V.; Eligehausen, R.; Bertero, V. V.; Popov, E. P.
- Source
- National Science Foundation, Washington, DC., November 1982, 126 p.
- Identifying Number(s)
- UCB/EERC-82/23
- Abstract
- The model is based on a general local bond stress-slip relationship, derived from the results of a previous extensive study, and on either a bilinear or a simple but sufficiently accurate nonlinear stress-strain relationship for the reinforcing steel bar. An efficient numerical scheme for the integration of the governing differential equation of bond along the embedment length of the bar is presented. The analytical model is then used to predict the bond behavior of a reinforcing bar embedded in exterior and interior joints of reinforced concrete frames subjected to severe load and/or deformation reversals which simulate the effects of earthquake loading. In these joints, besides confined concrete, the concrete that covers the core is unconfined; therefore, a modified analytical model for these cover regions had to be developed.
- Keywords
- Stress strain diagrams; Reinforced concrete; Mechanical hysteresis; Mathematical models; Reinforcing steels; Computer applications; Dynamic response; Earthquake engineering; Computer programming; Cyclic loads; Earthquakes