Experiment on Seismic Performance of Shear Wall Reinforced with CFRP Bars and Steel Bars(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年05期
- Page:
- 46-53
- Research Field:
- Publishing date:
Info
- Title:
- Experiment on Seismic Performance of Shear Wall Reinforced with CFRP Bars and Steel Bars
- Author(s):
- ZHAO Jun; SHEN Fu-qiang; SI Chen-zhe; SUN Yu-ping
- School of Mechanics and Engineering Sciences, Zhengzhou University
- Keywords:
- shear wall; CFRP bar; steel bar; seismic performance; residual deformation
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to study the impact of axial compression ratio and the form of stirrup in the edge column on seismic performance of shear walls reinforced with carbon fiber reinforced polymer (CFRP) bars and steel bars, 6 shear walls reinforced with CFRP bars and steel bars with the aspect ratio of 2.0 were designed. The 3 shear walls had rectangular stirrups, while the other 3 shear walls had circular stirrups. These specimens with axial compression ratio of 0.17, 0.26 and 0.33 were tested under reversed cyclic lateral loading. The characteristics of hysteretic curves and skeleton curves, laws of stiffness and strength degradation and energy dissipation capacity of shear walls were researched. The results show that the axial compression ratio and the form of stirrup have significant impacts on the seismic performance of shear walls. When the axial compression ratio increases, the bearing capacity and dissipation capacity are enhanced and the extent of stiffness degradation is mitigated, however the deformations corresponding to the ultimate load and the ultimate deformation go down. The form of stirrup has less influence on the ultimate bearing capacity, but the shear walls with rectangular stirrups have lager ultimate deformation and better cumulative energy dissipation capacity than those with hoops. When the axial compression ratios are bigger, the shear walls have lower depth of cracks and bigger failure regions. The failure region and failure degree with circular stirrup are bigger than those with rectangular stirrups. All shear walls have small residual deformation and good selfcentering performance.
Last Update: 2018-09-03