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Abstract:
An innovative shear wall was proposed, which was composed of high-strength concrete and steel rebars, as well as concrete-encased CFST columns embedded at boundary elements. To study the cyclic and resilient behavior of the proposed wall, four walls with shear span ratios of 2.2 were designed and tested under quasi-static cyclic loads. The test parameters were the type of longitudinal bars at boundary elements, the presence of steel fibers, and the axial compression ratio. As test results showed, within the limit of axial compression ratio, the proposed shear walls had small residual deformation until a 2% loading drift ratio; after that, the hysteresis curve became full and the energy dissipation capacity increased, indicating the desirable collapse resistance. Specifically, the use of ultra-high strength longitudinal bars at boundary elements significantly decreased the residual de-formation and improved the reparability. In addition, steel fibers effectively enhanced the deformation capacity of the proposed walls. Finally, given the confined effects of CFST columns and stirrups on concrete, a prediction model for the lateral load-bearing capacity was established. The comparison between predicted and test results from this study and existing research verified the good accuracy of this model.
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Source :
ENGINEERING STRUCTURES
ISSN: 0141-0296
Year: 2020
Volume: 220
5 . 5 0 0
JCR@2022
ESI Discipline: ENGINEERING;
ESI HC Threshold:115
Cited Count:
WoS CC Cited Count: 23
SCOPUS Cited Count: 26
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
Affiliated Colleges: