| CFRP加固一字形竖缝耗能预制剪力墙抗震性能研究 |
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| 引用本文： | 王宇亮,何斌,张玉敏,李祥,庞豹.CFRP加固一字形竖缝耗能预制剪力墙抗震性能研究[J].震灾防御技术,2021,16(3):544-553. |
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| 作者姓名： | 王宇亮 何斌 张玉敏 李祥 庞豹 |
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| 作者单位： | 1.华北理工大学, 建筑工程学院, 河北唐山 063210 |
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| 基金项目： | 国家自然科学基金（51678237）；河北省建设科技研究计划项目（2020-05-02） |
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| 摘 要： | 以一字形竖缝耗能预制剪力墙作为研究对象，设计了3个装配式剪力墙试件及1个现浇剪力墙对比试件，进行低周往复荷载试验，并对破坏墙体进行CFRP加固，再次进行拟静力试验。试件变化参数包括轴压比、混凝土强度等级及配筋率，对比分析加固前后试件滞回性能、刚度退化、承载力和耗能能力等性能。试验结果表明，与现浇剪力墙相比，一字形竖缝耗能预制剪力墙工作性能良好，阻尼器屈服耗能提高了试件整体工作性能；CFRP加固可有效抑制墙体斜裂缝的发展，对墙体承载力及耗能能力均有显著改善作用；各试件均满足剪力墙弹塑性层间位移角限值要求，延性较好；试件整体表现出良好的抗震性能。
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| 关 键 词： | 预制装配式剪力墙 竖缝 碳纤维布加固 延性 抗震性能 |
| 收稿时间： | 2021-03-19 |
Study on Seismic Behavior of CFRP Reinforced Rectangular Precast Shear Wall with Energy-dissipating Vertical Joints |
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| Wang Yuliang,He Bin,Zhang Yumin,Li Xiang,Pang Bao.Study on Seismic Behavior of CFRP Reinforced Rectangular Precast Shear Wall with Energy-dissipating Vertical Joints[J].Technology for Earthquake Disaster Prevention,2021,16(3):544-553. |
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| Authors: | Wang Yuliang He Bin Zhang Yumin Li Xiang Pang Bao |
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| Institution: | 1.College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China2.Earthquake Engineering Research Center of Hebei Province, Tangshan 063009, Hebei, China |
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| Abstract: | Taking the precast shear wall with energy-dissipating vertical joints as the research object, three precast shear wall specimens and one cast-in-place shear wall specimen were designed to carry out the low-cycle reciprocating load test, and the damaged specimens were reinforced with carbon fiber cloth, and the pseudo-static test was carried out. The changing parameters of the specimens were axial compression ratio (0.1, 0.3), concrete strength and reinforcement ratio. The hysteretic behavior, stiffness degradation, bearing capacity and energy dissipation capacity of the specimens before and after reinforcement were compared and analyzed. The results show that: compared with the cast-in-place shear wall, the working performance of the rectangular shear wall with energy-dissipating vertical joints is good, and the dampers improve the overall working performance of the specimen; CFRP reinforcement can effectively inhibit the development of the inclined cracks of the wall, and significantly improve the bearing capacity and energy-dissipating capacity. All specimens meet the limit of elastoplastic interlayer displacement Angle of shear wall and have good ductility. The specimens show good seismic performance. |
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| Keywords: | Precast shear wall Vertical joint CFRP reinforcement Ductility Seismic performance |
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