【作者】 高杰；

【导师】 高丹盈；

【作者基本信息】 郑州大学 ， 水工结构工程， 2014， 硕士

【摘要】 针对如何提高锈蚀混凝土构件性能的问题，本文以纤维增强聚合物（FiberReinforced Polymer，简称FRP）加固锈蚀混凝土柱为研究对象，进行了试验研究和理论分析，主要内容如下：（1）进行了14个FRP片材在常温下的力学性能试验,分析了FRP片材种类和片材层数对力学性能的影响，结果表明，在常温下，CFRP的弹性模量远大于GFRP，但是其伸长率低于GFRP。（2）进行了28根FRP条带加固锈蚀钢筋混凝土圆柱轴心受压试验，测试了圆柱的荷载-轴向变形曲线、荷载-横向变形曲线、FRP荷载-横向变形曲线，分析了纤维布类型、加固层数、锈蚀率对圆柱力学性能的影响。结果表明：纤维布加固在一定程度上提高了圆柱的承载力，并且CFRP的加固效果要优于GFRP；随着锈蚀率增加，FRP片材加固锈蚀钢筋混凝土圆柱的承载力并未随之大幅度降低，这表明纤维布加固在很大程度上减弱了钢筋锈蚀带来的影响。（3）基于对试验结果分析，考虑钢筋锈蚀劣化的影响，建立了FRP条带加固锈蚀钢筋混凝土圆柱轴心受压承载力计算模型。更多还原

【Abstract】 Aiming at the problem of improving the performance of concrete member withcorroded rebar, the article focuses on reinforced corroded concrete member with FRPand conducts experimental study and theoretical analysis. The main research contentsin this experiment are as follows:（1）Mechanical properties of fourteen FRP sheets are tested under normaltemperature and the impacts of categories and layers of FRP sheet on mechanicalproperties are analyzed. The research results show that the elastic modulus of CFRPis considerably higher than that of GFRP while elongation of CFRP is lower undernormal temperature.（2）Twenty-eight reinforced corroded reinforcement concrete columns withFRP are tested. Longitudinal deformation shapes and transverse deformation shapesunder cylindrical load, transverse deformation shapes under FRP load are studied andthe influences of the categories and layers of fibers or rust corrosion rate of steel barson concrete columns are analyzed. The results are given: reinforced concrete columnswrapped with fiber fabric improve the bearing capacity of concrete columns to acertain extent and reinforcement effect of CFRP is superior to that of GFRP； Thebearing capacity of concrete columns is not significantly decreased and fiber fabricweakened the influence caused by rebar corrosion.（3）Based on the results of experiments, a model is established to calculateaxial compression capacity of reinforced corroded reinforcement concrete columnswrapped with FRP with degradation caused by reinforcement corrosion considered.更多还原