| 二次受力下CFRP加固RC梁的刚度计算方法 |
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| 引用本文： | 朱彦鹏,赵丹丹,谭坚贞.二次受力下CFRP加固RC梁的刚度计算方法[J].甘肃科学学报,2008,20(2):60-63. |
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| 作者姓名： | 朱彦鹏 赵丹丹 谭坚贞 |
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| 作者单位： | 兰州理工大学土木工程学院,甘肃,兰州,730050 |
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| 摘 要： | 将CFRP加固梁的弯矩-曲率关系理想化为三线型，通过平衡方程的建立，推导出加固后RC梁的刚度计算方法．解决了目前CFRP加固钢筋混凝土受弯构件刚度计算中，忽略2次受力产生的碳纤维应变滞后值，从而导致过高估计构件实际承载力的问题．
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| 关 键 词： | CFRP 钢筋混凝土梁 刚度 滞后应变 |
Calculating Method for the Stiffness of RC Beam Strengthened with CFRP under Quadratic Loading |
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| ZHU Yan-peng,ZHAO Dan-dan,TAN Jian-zhen.Calculating Method for the Stiffness of RC Beam Strengthened with CFRP under Quadratic Loading[J].Journal of Gansu Sciences,2008,20(2):60-63. |
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| Authors: | ZHU Yan-peng ZHAO Dan-dan TAN Jian-zhen |
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| Institution: | ZHU Yan-peng,ZHAO Dan-dan,TAN Jian-zhen(College of Civil Engineering,Lanzhou University of Science , Technology,Lanzhou 730050,China) |
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| Abstract: | The moment-curvature curve of the strengthened beam with CFRP was presumed to the idealized three-segment-line type.The calculation method of strengthened stiffness of RC beam was deduced by building the equilibrium equation.The hysteretic strain value of CFRP due to quadratic loading has been often neglected in the calculations of stiffness of strengthening reinforced concrete bending member.The ouerestimation of the actual supporting capacity of members was resolved by the above method. |
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| Keywords: | carbon fiber reinforced polymers(CFRP) reinforced concrete(RC)beam stiffness hysteretic strain |
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