| Title |
Pushover Analysis of Reinforced Concrete Shear Wall with a Barbell-Shaped Cross Section Using Fiber Slices and Nonlinear Shear Spring |
| DOI |
http://dx.doi.org/10.5659/JAIK_SC.2015.31.9.19 |
| Keywords |
Reinforced concrete shear walls ; Barbell-shaped cross section ; Pushover analysis ; Fiber slice ; Nonlinear shear spring |
| Abstract |
Reinforced concrete shear walls are effective for resisting lateral loads imposed by wind or earthquakes. Observed damages of the shear wall in previous earthquakes in Chile(2010) and New Zealand(2011) exceeded expectations. Various analytical models have been proposed in order to incorporate such response features in predicting the inelastic response of RC shear walls. However, the model has not been implemented into widely available computer programs, and has not been sufficiently calibrated with and validated against extensive experimental data at both local and global response levels. In this study, reinforced concrete shear walls with a barbell-shaped cross section were modeled with fiber slices, where cross section and reinforcement details of shear walls can be arranged freely. Pushover analysis was performed by adding nonlinear shear spring elements that can represent shear deformation. This analysis result will be compared with the existing experiment results. To investigate the nonlinear behavior of reinforced concrete shear walls, reinforced concrete single shear walls with a barbell-shaped cross section were selected. Thus, the yield strength of the shear wall was almost the same in the experimental and the analytical results. However, the yielding displacement of the shear wall was still higher in the experiment than the analysis. |