摘要
碳纤维加固混凝土柱抗震性能的好坏,通过水平周反复荷载试验的设计对其进行详细分析,试验过程主要包括柱顶位移、抗剪承载力、滞回及骨架曲线等多个方面。混凝土柱抗剪承载力的提升与碳纤维环绕包裹有直接关系,土柱变形能力、延伸性能及初始刚度的增加通过试验结果显示对抗震性能有明显改善。除此以外,碳纤维片一、二层包裹对混凝土柱结构影响不大,主要原因是抗震性能受混凝土柱约束,且层数的增加对混凝土柱约束效应有限。
The seismic performance of CFRP reinforced concrete columns is analyzed in detail through the design of horizontal cyclic loading test.The test process mainly includes column top displacement,shear capacity,hystere⁃sis and skeleton curve.The improvement of the shear capacity of concrete columns is directly related to the wrap⁃ping of carbon fiber.The increase of deformation capacity,elongation performance and initial stiffness of soil col⁃umns shows that the seismic performance is significantly improved.In addition,the first and second layer wrapping of carbon fiber sheet has little effect on the concrete column structure.The main reason is that the seismic perfor⁃mance is constrained by the concrete column,and the increase of the number of layers has limited restraint effect on the concrete column structure.
作者
黄艳妮
王津
Huang Yanni;Wang Jin(Shaanxi Polytechnic Institute,Xianyang 712000,China;Shaanxi Railway Institute,Weinan 714000,China)
出处
《粘接》
CAS
2021年第3期105-107,111,共4页
Adhesion
基金
陕西工业职业技术学院院级重点课题项目(ZK19-05)
陕西高等教育教学改革研究项目(19GG013)。
关键词
碳纤维布
加固
钢筋混凝土柱
抗震性能
carbon fiber sheet
reinforcement
reinforced concrete column
seismic performance
