| Title |
Evaluation of Energy Dissipation Capacity of Reinforced Concrete Beams Showing Shear Pinching |
| Authors |
Eom Tae-Sung ; Park Hong-Gun |
| Keywords |
Energy Dissipation ; Cyclic Loading ; Beam ; Earthquake Design ; Reinforced Concrete |
| Abstract |
For reliable performance evaluation and design of buildings against earthquakes, energy dissipation capacity of structures and their members should be accurately estimated. In the present study, nonlinear analysis was performed for the slender reinforced concrete beam showing pinching under cyclic loading by using the nonlinear truss model, and the behavioral characteristics and mechanism of energy dissipation were investigated. The results showed that the energy dissipation of the beam is developed due to flexural deformation and the longitudinal reinforcing bars at the ends of the cross-section that develop large plastic strains due to the flexural deformation during cyclic loading, mainly contribute to the energy dissipation. Based on the results, a simplified method for predicting the energy dissipation of slender reinforced concrete beams was developed. For verification, the proposed method was applied to slender beams with different design parameters and the predicted energy dissipation capacities were compared with test results. |