EXPERIMENTAL STUDY ON RC FRAMES AND CONNECTIONS WITH BRACED DAMPERS USED AS SEISMIC ELEMENTS

Abstract

The purpose of this study is to assess the structural performance of the PC steel bar crimping method and the steel bar anchorage method as the means of attaching braced dampers to RC frames. First, we conducted elemental experiments on the attachment joints, by subjecting 10 specimens to loading. Subsequently, we performed structural experiments on the framework with braced dampers to examine the damage conditions at the attachment joints for the two methods. We then carried out a plane frame analysis to simulate a structural experiment, and compared the experimental and analytical results to investigate the effect of misalignment displacement of the attachment on the behavior of the braced damper. As a result, the following findings were obtained.
1. The elemental experiments found that the shear capacity of the attachment joints exceeded the calculated values.
2. The structural experiments showed stable properties with almost no reduction in bearing capacity up to large deformations.
3. Based on a comparison between the experimental data and the analytical results, it was inferred that the effect of misalignment displacement of the attachment on the behavior of the braced damper was small.