结构工程师2017，Vol.33Issue(1)：50-56,7.
FRP筋混凝土受弯构件双筋截面承载力的计算方法
Calculation Method for the Flexural Capacity of FRP Reinforced Concrete Members
摘要
Abstract
The failure modes of concrete members reinforced with fiber-reinforced polymer (FRP) bars include concrete crushing and FRP rupture.The flexural capacity of FRP reinforced concrete sections should be calculated according to the failure mode of FRP RC members.The existing guidelines for FRP RC are not given the section bearing capacity calculation method with FRP bars in the compression zone.Consequently,this paper proposes a general methodology for determining the moment capacity of FRP RC sections by utilizing the general parabolic-rectangular diagram for concrete in compression according to the GB50010 model.To avoid the iterative process,a simplified calculation formula of the moment capacity can be adopted when FRP rupture governs the design.The results from other literatures,the results of the calculation of the single reinforcement method and the results of the two reinforcement methods are compared.The results show that the error between the calculated results and the experimental values is large for the concrete crushing failure mode when the reinforcement ratio is large,and the contribution of FRP bars in the compression zone should be considered.The accuracy of the proposed design method has been verified by comparing the predictions with the experimental results of 6 beams,which are available in the published literature.The design method can be used to calculate the flexural capacity of FRP RC section.关键词
FRP筋/混凝土构件/抗弯承载力/混凝土压碎/FRP筋断裂Key words
FRP bar/concrete members/flexural capacity/concrete crushing/FRP rupture引用本文复制引用
赵权,涂建维..FRP筋混凝土受弯构件双筋截面承载力的计算方法[J].结构工程师,2017,33(1):50-56,7.基金项目
国家自然科学基金(51178368,51478372) （51178368,51478372）
十二五国家科技支撑计划项目(2014BAB15B01) （2014BAB15B01）
