纤维聚合物筋混凝土粘结性能的基本问题  

Fundamental Problems on Bond Behavior between Fiber Reinforced Polymer (FRP) Rebar and Concrete

作　　者：高丹盈[1] 谢晶晶[1] 李趁趁[1] 

机构地区：[1]郑州大学环境与水利学院,河南郑州450002

出　　处：《郑州大学学报（工学版）》2002年第1期1-5,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目 (5 99780 4 6 5 0 0 790 2 8);1999年度河南省杰出青年基金资助项目

摘　　要：纤维聚合物筋与钢筋性能的差异 ,使纤维聚合物筋混凝土的粘结性能与钢筋混凝土的粘结性能存在明显不同 .根据纤维聚合物筋与混凝土之间的传力机理 ,讨论了粘结应力、纤维聚合物筋应力以及锚固长度之间的关系 ,建立了纤维聚合物筋混凝土粘结计算的基本公式 .在总结国内外已有的纤维聚合物筋与混凝土粘结滑移本构模型的基础上 ,提出了粘结滑移的连续曲线本构模型 .该模型以粘结滑移曲线的三个关键点为基础 ,物理概念明确、光滑连续 .最后 ,讨论了锚固长度的计算问题 。The difference between the behavior of fiber reinforced polymer bar (FRP) and steel reinforcement makes the obvious difference between of the bond behavior the concrete reinforced with FRP and the concrete reinforced with steel reinforcement.According to the mechanism of force transference between FRP bars and concrete, this paper discusses the relationship among bond stress, the stress of FRP bar and embedment length.The basic equations for the bond calculation of FRP reinforced concrete are established.Based on the summary of the existent constitutive models for bond slip relation between FRP and concrete at home and abroad, the smooth curve model for bond and slip relation is presented.The model based on the three key points on the bond-slip curve is obvious in physical idea and smoothly sequent. Finally, the calculations of bond length are discussed.

关 键 词：纤维聚合物筋 混凝土 粘结性能 粘结应力 粘结计算 粘结滑移 连续曲线本构模型 锚固长度 

分 类 号：TU528.572[建筑科学—建筑技术科学]