层内混杂FRP加固混凝土剪力墙抗震性能试验  

Experiment on Seismic Performance of Reinforced Concrete Shear Walls Strengthened With Hybrid FRP

作　　者：邓宗才[1] 曾洪超[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《北京工业大学学报》2012年第10期1504-1508,共5页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50978006);国家科技支撑计划资助项目(2006BAJ03A09-02)

摘　　要：为了将延性好的混杂纤维布(HFRP)用于结构抗震加固,试验研究了4个HFRP加固钢筋混凝土剪力墙的抗震性能,分析了HFRP加固剪力墙的破坏特征、滞回曲线、延性、骨架曲线以及耗能能力,探讨了剪跨比对HFRP加固效果的影响.试验表明:粘贴HFRP能使混凝土剪力墙刚度退化变缓,HFRP对减缓低矮剪力墙刚度退化的作用要优于中高剪力墙;HFRP能显著提高剪力墙的延性,对改善中高剪力墙延性的作用更加明显;HFRP加固剪力墙试件的延性、耗能性能良好,滞回曲线丰满,捏拢程度变轻。In order to research the feasibility of structural seismic retrofit with Hybrid FRP（HFRP）,which has a good ductility,four reinforced concrete shear walls were tested to investigate the performances such as failure mode of shear walls,ductility,hysteretic curves,skeleton curves and energy consumption strengthened with HFRP in this paper.The effect of shear span ratio on the seismic performance of shear walls strengthened with HFRP were studied herein.The results show that the stiffness would degrade slowely if shear walls are strengthened with HFRP.This effect is more obvious to low-rise shear wall than that to mid-rise shear wall.Strengthening the shear walls with the new-style HFRP herein would have a great effect on improving the ductility and capacity of energy consumption,and it’s more effective to mid-rise shear wall than low-rise one.Concrete Shear walls strengthened with HFRP would have good ductility and capacity of energy consumption,the hysteretic curves are fat and the pinching behavior becomes light.

关 键 词：混杂纤维布(HFRP) 剪力墙加固 剪跨比 低周反复加载 抗震性能 

分 类 号：TU502[建筑科学—建筑技术科学]