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Experimental Testing of Reinforced ECC Beams Subjected to Various Cyclic Deformation Histories
| 题名： | Experimental Testing of Reinforced ECC Beams Subjected to Various Cyclic Deformation Histories |
| 其他题名： | ACI(American Concrete Institute).(2014)."Building code requirements for structural concrete."ACI 318-14,Farmington Hills,MI. |
| 正文语种： | 英文 |
| 作者： | Timothy E. Frank |
| 关键词： | Engineered cementitious composite (ECC);Cyclic deformation history;Deformation pulse;Structural ductility;Steel reinforcement strain |
| 摘要： | Steel-reinforced engineered cementitious composite (ECC) members have demonstrated enhanced seismic performance in structural components and systems such as coupling beams, infill panels, joints, columns, and beams. Because a large pulse in a deformation history may cause fiber pullout within the ECC and alter material-level behavior, the response of reinforced ECC components subjected to deformation histories that contain initial pulses are of particular interest. Reinforced ECC beams of various steel reinforcement ratios and reinforcing bar sizes were experimentally subjected to one of three deformation histories. The presence and size of initial deformation pulses affected cracking, strain development in the steel reinforcement, and hysteretic response, while the failure mode of the specimens was consistently fracture of the steel reinforcing bars. Reductions in steel reinforcement strain caused by bond degradation at the steel-ECC interface facilitated, in general, no change in ultimate structural ductility between similar specimens, regardless of deformation history, except specimens containing the lowest steel reinforcement ratio, 0.73％ in flexure, which had a comparatively high bond capacity relative to the bond demand at the steel-ECC interface. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N06016 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002034 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 06 |
| 页码： | 191-200 |
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