| 基于纤维模型的外粘型钢加固混凝土柱静力弹塑性分析 |
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| 引用本文： | 潘志宏,李爱群.基于纤维模型的外粘型钢加固混凝土柱静力弹塑性分析[J].东南大学学报(自然科学版),2009,39(3). |
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| 作者姓名： | 潘志宏 李爱群 |
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| 作者单位： | 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096;邵阳学院城市建设系,邵阳422000
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,南京,210096 |
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| 基金项目： | 国家科技支撑计划重大项目，湖南省教育厅科研项目 |
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| 摘 要： | 基于纤维模型,引入约束混凝土本构关系,提出了对外粘型钢加固混凝土柱进行静力弹塑性分析的方法,并在OpenSees平台上编程实现.在此基础上,对约束混凝土本构参数进行了敏感性研究,探讨了混凝土材料本构模型对截面层次的弯矩曲率关系和构件层次的荷载位移关系的影响.经与2次不同的试验结果比较,计算的荷载位移曲线与试验结果符合良好,表明在外包钢加固柱进行弹塑性分析时,对约束混凝土采用Kent-Scott-Park本构模型可以获得良好的分析结果.本构模型中约束增强系数和应变参数对于分析结果,特别是弹塑性阶段结果的准确性起到非常重要的作用.
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| 关 键 词： | 外粘型钢加固 抗震性能 纤维模型 约束混凝土 静力弹塑性分析 |
Nonlinear static analysis on RC column strengthened with externally bonded steel frame based on fiber model |
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| Pan Zhihong,Li Aiqun.Nonlinear static analysis on RC column strengthened with externally bonded steel frame based on fiber model[J].Journal of Southeast University(Natural Science Edition),2009,39(3). |
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| Authors: | Pan Zhihong Li Aiqun |
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| Institution: | Pan Zhihong1,2 Li Aiqun1(1 Key Laboratory of Concrete , Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China)(2Department of Urban Construction,Shaoyang University,Shaoyang 422000,China) |
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| Abstract: | Based on a fiber model,the approach for nonlinear static analysis on strengthened column is proposed,and the procedure on an OpenSees platform is programmed by introducing the constitutive relation of confined concrete.After this,a parametric sensitivity study is performed for a confined concrete constitutive model.The effects of the constitutive model of confined concrete on the section level of moment curvature relation,and on the component level of load displacement relations is discussed.The load-displa... |
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| Keywords: | strengthening with externally bonded steel frame seismic performance fiber model confined concrete static nonlinear analysis |
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