| 基于截面换算规则的FRP约束混凝土轴心抗压强度模型研究 |
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| 引用本文： | 朱天志,孟德光,姚素玲.基于截面换算规则的FRP约束混凝土轴心抗压强度模型研究[J].工业建筑,2009(Z1). |
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| 作者姓名： | 朱天志 孟德光 姚素玲 |
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| 作者单位： | 河北科技师范学院土木建筑系; |
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| 摘 要： | FRP在结构补强方面已经得到了广泛的应用,有关FRP约束混凝土于圆形柱轴心抗压强度计算模型相对较为成熟。以FRP约束混凝土圆形柱应力模型的基础上,针对方柱、矩形柱截面与圆形截面的不同,对FRP约束矩形截面混凝土柱的轴心受压性能进行过程分析,基于截面面积和惯性矩相等的换算原则,提出了矩形截面转换为圆形柱的等效直径计算公式,引入了截面影响系数对极限强度进行了修正,构建了FRP约束钢筋混凝土矩形柱的极限强度模型,并应用已有的试验数据对模型的有效性和可行性进行检验,结果表明,模型计算结果与试验数据具有较好的吻合度和一致性,能够反映FRP约束混凝土矩形柱的真实特性,研究成果可作为工程实践的参考依据。
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| 关 键 词： | 纤维增强塑料 约束混凝土 混凝土矩形柱 抗压强度 |
MODEL OF AXIAL COMPRESSIVE STRENGTH OF FRP CONFINED CONCRETE BASED ON RULE OF SECTIONAL CONVERSION |
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| Zhu Tianzhi Zhang Lishan Meng Deguang.MODEL OF AXIAL COMPRESSIVE STRENGTH OF FRP CONFINED CONCRETE BASED ON RULE OF SECTIONAL CONVERSION[J].Industrial Construction,2009(Z1). |
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| Authors: | Zhu Tianzhi Zhang Lishan Meng Deguang |
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| Affiliation: | Hebei College of Technology and Normal;Qinhuangdao 066004;China |
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| Abstract: | It was analyzed the behavior of FRP confined rectangular concrete column under axial loads based on a stress model of FRP confined circular concrete column.Auording to the rule of section area being equal to inertia moment,a formula of equivalent diameter of changing a rectangular section into a circulor column section is proposed to set up a limit strength model of FRP confined RC rectangular column,whose feasibility is verified by the existing data.The result shows that the results by the model agre well ... |
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| Keywords: | FRP confined concrete concrete rectangular column compressive strength |
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