| FRP约束高强混凝土轴心抗压强度的计算方法 |
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| 引用本文： | 钱春香,陈世欣,郑孝霞,过占其,皮埃特·斯居文.FRP约束高强混凝土轴心抗压强度的计算方法[J].东南大学学报,2004,20(3):352-355. |
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| 作者姓名： | 钱春香 陈世欣 郑孝霞 过占其 皮埃特·斯居文 |
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| 作者单位： | [1]东南大学材料科学与工程系．南京210096 [2]特尔夫理工大学土木工程和地球科学学院，荷兰特尔夫 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，the International Cooperation Project from Science and Technology Bureau of Nanjing |
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| 摘 要： | 建立了一个用于估算FPR加固混凝土轴心抗压强度的数学模型, 该模型引入了FRP强度发挥系数(套箍发挥系数). 实验结果表明, 混凝土达到极限强度时, FRP并未达到极限强度, 其强度发挥系数在0. 28～0. 59之间, 与FRP的弹性模量有关. 该计算方法可用于估算FRP加固混凝土的轴心抗压强度, 其理论计算强度高于实测强度10%～30%, 偏差主要来自FRP与混凝土的界面粘结状况不理想及混凝土抗压强度数据的离散性等.
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| 关 键 词： | 加固 高强混凝土 轴心抗压强度 理论计算 |
Calculation on uniaxial compressive strength of high strength concrete after wrapped by FRP |
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| QIAN Chunxiang,Chen Shixin,Zheng Xiaoxia,Guo Zhanqi,Piet Stroeven.Calculation on uniaxial compressive strength of high strength concrete after wrapped by FRP[J].Journal of Southeast University(English Edition),2004,20(3):352-355. |
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| Authors: | QIAN Chunxiang Chen Shixin Zheng Xiaoxia Guo Zhanqi Piet Stroeven |
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| Abstract: | A theoretical calculation method of the axial compressive strength of a high strength concrete with fibre reinforced plastics (FRP) constraint is proposed. It is shown by test verification that the FRP strength devotion factor used for this method is in accord with actual conditions. FRP is not up to the ultimate strength when the concrete reaches the ultimate strength, whose strength devotion factor is in the range of 0.28 to 0.59, which is related to an elastic modulus. The method can be used to estimate axial compressive strength of the concrete strengthened with FRP. The theoretical strength is 10% to 30% higher than the measured one. The deviation comes mainly from a non-ideal bonding condition of FRP-concrete interfaces and discrete property of the testing data of compressive strength. |
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| Keywords: | FRP strengthening high-strength concrete fibre reinforced plastics (FRP) axial compressive strength theoretical calculation |
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