| 碳纤维布加固钢筋混凝土梁的动力性能分析 |
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| 引用本文： | 谢卫红,董昊,辛家宝.碳纤维布加固钢筋混凝土梁的动力性能分析[J].混凝土,2009(7). |
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| 作者姓名： | 谢卫红 董昊 辛家宝 |
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| 作者单位： | 徐州空军学院,机场工程系,江苏,徐州,221000 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 为分析碳纤维布加固钢筋混凝土梁在爆炸荷载作用下的动力性能,对碳纤维布加固钢筋梁的抗力特性进行了分析,建立了爆炸荷载下碳纤维布加同钢筋混凝土梁的应变硬化弹塑性抗力模型.依据所建模型,将结构简化为单自由度体系,采用突加平台荷载,对结构进行了弹塑性的动力响应研究,分析了影响结构动力性能的因素.研究结果表明:在爆炸荷载作用下,碳纤维布改变结构弹性阶段和塑性阶段的抗弯刚度,使结构的自振频率发生了变化,提高了结构的承载力.同时,由于碳纤维布能够改善混凝土梁结构的延性,也能对混凝土结构的承载力产生显著的影响.
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| 关 键 词： | 爆炸荷载 碳纤维布 钢筋混凝土梁 动力性能 |
Analysis of dynamic behavior of reinforced concrete beam with CFRPS |
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| XIE Wei-hong,DONG Hao,XIN Jia-bao.Analysis of dynamic behavior of reinforced concrete beam with CFRPS[J].Concrete,2009(7). |
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| Authors: | XIE Wei-hong DONG Hao XIN Jia-bao |
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| Affiliation: | Department of Airport Engineering;Xuzhou Airforce Logistic Institute;Xuzhou 221000;China |
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| Abstract: | Resistance characteristic is analyzed and the elastic-plastic strain-hardening resistance model of RC beam strengthened with CFRPS is established for studying the dynamic behavior of the strengthened RC beam under the blast loading.Equivalent single degree of freedom system is established by simplified beam strengthened with CFRPS and under the sudden load rise,dynamic responses is done for beam strengthened with CFRPS under blast loading.The factor affecting the strengthened structures are discussed.The an... |
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| Keywords: | blast loading carbon fiber reinforced polymer sheet(CFRPS) RC beam dynamic behavior |
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