| 反复荷载作用下预应力CFRP筋HPC梁的力学响应 |
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| 引用本文： | 张剑,艾军,周储伟,叶见曙,林晶.反复荷载作用下预应力CFRP筋HPC梁的力学响应[J].南京航空航天大学学报,2011,43(1). |
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| 作者姓名： | 张剑 艾军 周储伟 叶见曙 林晶 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016
2. 东南大学交通学院,南京,210096 |
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| 基金项目： | 国家自然科学基金(10472045,10772078)资助项目; 江苏省交通科学研究计划(09Y012)资助项目 |
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| 摘 要： | 对于预应力碳纤维增强复合材料(Carbon fiber reinforced composite,CFRP)筋高性能混凝土(High per-formance concrete,HPC)梁,建立了预应力CFRP筋的组合壳单元模型和GFRP筋的分层壳单元模型,结合相关准则研究了预应力CFRP筋HPC梁的几何非线性和材料非线性,分析了反复荷载作用下HPC梁的非线性力学响应。结果表明,单调荷载作用下预应力CFRP筋HPC梁的跨中挠度和CFRP筋应变的计算结果与试验数据均吻合良好,证明了所提出单元的有效性和研制程序的正确性;反复荷载作用下预应力CFRP筋HPC梁的受拉区配筋种类对HPC梁的力学响应具有显著影响,且梁体破坏时CFRP筋和GFRP筋均未达到相应的极限强度,所得结论供HPC梁设计参考。
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| 关 键 词： | 复合材料 反复荷载 CFRP筋 HPC梁 力学响应 |
Mechanical Reponses of HPC Beam with Prestressed CFRP Rebars Subjected to Cyclic Loading |
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| Zhang Jian,Ai Jun,Zhou Chuwei,Ye Jianshu,Lin Jing.Mechanical Reponses of HPC Beam with Prestressed CFRP Rebars Subjected to Cyclic Loading[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(1). |
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| Authors: | Zhang Jian Ai Jun Zhou Chuwei Ye Jianshu Lin Jing |
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| Institution: | Zhang Jian1,Ai Jun1,Zhou Chuwei1,Ye Jianshu2,Lin Jing2(1.College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China,2.College of Transportation,Southeast University,210096,China) |
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| Abstract: | For a high performance concrete beam(HPC beam) with prestressed carbon fiber reinforced composite(CFRP) rebars,the prestressed CFRP and the GFRP rebars are modeled by the combined shell element and the layered shell element.The geometrical nonlinearity and material nonlinearity of the combined-layered shell element are completed with some relative criteria.The nonlinear mechanical responses of HPC beams with prestressed CFRP rebars subjected to the cyclic loading are studied.When the HPC beams are subjected... |
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| Keywords: | composite material cyclic loading carbon fiber reinforced composite rebar high performance concrete beam mechanical response |
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