| 地震荷载作用下FRP用量对加固RC圆柱变形能力影响研究 |
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| 引用本文： | 顾冬生,吴刚,吴智深.地震荷载作用下FRP用量对加固RC圆柱变形能力影响研究[J].工程抗震与加固改造,2010,32(5). |
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| 作者姓名： | 顾冬生 吴刚 吴智深 |
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| 作者单位： | 1. 江南大学环境与土木工程学院,江苏,无锡214122;东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏,南京210096
2. 东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏,南京210096 |
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| 基金项目： | 国家“937”计划项目(2007CB714200); 国家自然科学基金资助项目(50608015,50908102); 东南大学混凝土及预应力混凝土结构教育部重点实验室开放课题资助项目 |
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| 摘 要： | 纤维增强复合材料(FRP)加固钢筋混凝土(RC)圆柱可以有效提高其抗震性能。本文研究地震荷载作用下FRP用量对加固圆柱变形能力的影响。运用数值计算方法对加固柱截面曲率进行计算,发现FRP用量对屈服曲率影响很小,但对极限曲率有显著的影响。试验结果显示,加固柱顶点侧向位移角并不随FRP加固用量的增加一直增加,当FRP用量达到一定值后进一步增加会降低侧向位移角。理论分析表明,这是由于加固柱塑性铰长度也受FRP用量的影响,随着FRP用量的增加塑性铰长度变小。最后讨论了具有良好加固效果的FRP用量上限范围。
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| 关 键 词： | FRP约束 加固 延性 侧向位移 |
Impact of FRP Amount to the Deformation Capacity of FRP Retrofitted Circular Columns under Simulated Seismic Loading |
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| Gu Dong-sheng,Wu Gang,Wu Zhi-shen.Impact of FRP Amount to the Deformation Capacity of FRP Retrofitted Circular Columns under Simulated Seismic Loading[J].Earthquake Resistant Engineering and Retrofitting,2010,32(5). |
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| Authors: | Gu Dong-sheng Wu Gang Wu Zhi-shen |
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| Affiliation: | Gu Dong-sheng1,2,Wu Gang2,Wu Zhi-shen2(1.College of Environment and Civil Engineering,Jiangnan Uiniuersity,Wuxi 214122,China,2.Key Laboratory of Concrete and Pre-stressed Concrete Structures of the Ministry of Education,Southeast University,Nanjing 210096,China) |
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| Abstract: | Fiber reinforced polymer(FRP) have great efficiency to retrofit circular reinforced concrete(RC) columns under simulated seismic loading.In this paper,the impact of the FRP amount to the deformation capacity of the retrofitted columns is studied.The sectional curvature is calculated with numerical analysis method.It is found the FRP amount has very limited influence to sectional yield curvature,however,the ultimate curvature can be significantly influenced.The test results demonstrate that the ultimate drif... |
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| Keywords: | FRP confinement retrofitting ductility drift ratio |
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