| 轴心受压FRP约束圆形混凝土柱应力-应变模型 |
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| 引用本文： | 于峰,牛荻涛.轴心受压FRP约束圆形混凝土柱应力-应变模型[J].哈尔滨工业大学学报,2009(10):214-216. |
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| 作者姓名： | 于峰 牛荻涛 |
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| 作者单位： | 安徽工业大学建筑工程学院;西安建筑科技大学土木工程学院 |
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| 基金项目： | 国家自然科学基金重点项目(50538060);安徽省优秀青年人才基金资助(2009SQRZ081) |
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| 摘 要： | 外包纤维复合材料(FRP)可以有效的提高混凝土柱的承载力和延性.本文系统总结了现有的几种FRP约束混凝土柱应力-应变模型,通过对已有大量试验研究结果的分析,指出FRP约束圆形混凝土柱的性能主要取决于FRP对混凝土柱的约束效果,引入约束效应系数ξ.并以约束效应系数ξ为主要参数,提出了FRP约束圆形混凝土柱三阶段应力-应变模型.该模型能较好的反映FRP约束混凝土柱应力-应变关系的特点,模型计算结果与试验数据吻合较好.
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| 关 键 词： | 纤维复合材料 混凝土柱 应力-应变模型 约束 |
Stress-strain model of FRP-confined circular column subjected to axial compression |
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| YU Feng,NIU Di-tao.Stress-strain model of FRP-confined circular column subjected to axial compression[J].Journal of Harbin Institute of Technology,2009(10):214-216. |
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| Authors: | YU Feng NIU Di-tao |
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| Affiliation: | 1.School of Construction Engineering,Anhui University of Technology,Ma’anshan 243002 2.College of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055) |
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| Abstract: | External confinement by the wrapping of fiber reinforced plastic(FRP) is an efficient technique to increase the loading-carrying capacity and ductility of concrete column.Several typical stress-strain models of FRP-confined concrete column are summarized in this paper,and it is pointed out that the behavior of FRP-confined concrete column is mainly related to the lateral confinement of FRP to concrete column by the analysis of a large number of experimental results,so the confinement effect coeffficientξis introduced.Taking ξas a main parameter,a three portions stress-strain model of FRP-confined concrete column is proposed. The model captures the main characteristics of stress-strain relationship of FRP-confined concrete column,and the predictions of the model agree well with test data. |
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| Keywords: | fiber reinforced polymer concrete column stress-strain model confinement |
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