| 外贴FRP加固钢筋混凝土梁用量显式设计方法 |
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| 引用本文： | 管仲国,李建中. 外贴FRP加固钢筋混凝土梁用量显式设计方法[J]. 同济大学学报(自然科学版), 2006, 34(12): 1583-1586 |
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| 作者姓名： | 管仲国 李建中 |
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| 作者单位： | 同济大学,桥梁工程系,上海,200092 |
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| 摘 要： | 对外贴FRP（纤维增强复合材料）加固钢筋混凝土梁抗弯极限承载力的求解问题，ACI440F规范及我国CECS146：2003规程都给出了相应的求解公式，但均为验算形式．这在面向设计，即计算给定目标承载力下的FRP用量时，并不方便．针对矩形截面形式，通过引入原构件配筋特征参数和FRP配筋特征参数，推导出量纲-形式的弯矩增量与参数之间的关系表达式，并给出显式求解FRP用量的计算方法．在此基础上，进一步通过定义截面形状系数，将这一显式求解方法推广至T形及更为一般性的截面形式．
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| 关 键 词： | 钢筋混凝土梁 纤维增强复合材料 加固 显式方法 |
| 文章编号： | 0253-374X（2006）12-1583-04 |
| 收稿时间： | 2005-04-27 |
| 修稿时间： | 2005-04-27 |
Explicit Method for Calculating FRP Volume of RC Beam Strengthened with Externally Bonded FRP |
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| GUAN Zhongguo,LI Jianzhong. Explicit Method for Calculating FRP Volume of RC Beam Strengthened with Externally Bonded FRP[J]. Journal of Tongji University(Natural Science), 2006, 34(12): 1583-1586 |
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| Authors: | GUAN Zhongguo LI Jianzhong |
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| Affiliation: | Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The checking formulae presented by ACI 440F and Chinese Specification CECS 146:2003 is not convenient for calculating fiber reinforced polymer(FRP) volume for given target capacity of reinforced concrete(RC) beams strengthened with externally bonded FRP.A non-dimensional equation of bearing-capacity increment for rectangular beam is deduced by defining steel-reinforcement characteristic value and FRP-reinforcement characteristic value,and then an explicit formula for FRP volume calculation is presented.Furthermore,the explicit formula is applied to beams with T-shaped section or even general section by using an additional section shape factor. |
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| Keywords: | reinforced concrete beam fiber reinforced polymer(FRP) strengthening explicit method |
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