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Effects of Strain Rate on the Hysteretic Behavior of Buckling-Restrained Braces
| 题名： | Effects of Strain Rate on the Hysteretic Behavior of Buckling-Restrained Braces |
| 正文语种： | 英文 |
| 作者： | Zhe Qu; Jinzhen Xie; Yuteng Cao; Wenjun Li; Tao Wang |
| 作者单位： | Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering ;Dept, of Structural Engineering, Institute of Engineering Mechanics, China Earthquake Administration;China Earthquake Administration |
| 关键词： | Dynamic loading; Compression strength adjustment factor; Low-cycle fatigue; Cumulative deformation capacity. |
| 摘要： | Two groups of geometrically identical buckling-restrained braces (BRBs) were subjected to either dynamic or quasi-static uniaxial loading until the cores fractured to investigate the effect of the strain rate on the hysteretic behavior of BRBs. The test results show that the compression overstrength of the BRBs is significantly greater in dynamic loading than in quasi-static loading. This finding indicates that neglecting the strain-rate effect on BRBs is nonconservative. No obvious effect of the strain rate on the cumulative deformation capacity of BRBs was observed during testing. The results thus support a previously proposed empirical model for estimating the cumulative deformation capacity of BRBs. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.146 |
| 期： | No.01 |
| 页码： | 06019003 |
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