| 英文摘要 |
In recent years, researchers have focused their study on many possible approaches to enhancing the seismic performance of structures. One promising solution which is receiving attention today is the application of Shape Memory Alloys(SMA). In this study, high seismic performance RC frames have been proposed to have SMA bars acting as a kind of structural bracing system at both sides of a frame to increase the energy dissipation capacity of the RC frame. This paper presents the results of the shake table tests on a single-bay single-story RC frame with SMA bars. The height and span of the designed frame were 2.0 m and 2.3 m, respectively. SMA bars were provided in the directions of 40 degrees to the horizontal. The type of SMA bar used in the study is the Superelastic SMA bar. The force-displacement hysteretic loops of the RC frame with SMA bars under seismic loading are presented and compared with the test results of the bare RC frame. Test results show that the SMA bars can effectively reduce the maximum story drift of the tested frame. It was found that the reduction of story drift and base shear was depending on the characteristic of the input ground motion. |
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