CFRP布加固损伤钢筋混凝土框架的抗震试验研究  

Experimental study on the damaged RC frame structure strengthened with CFRP under low-cycle repeated load

作　　者：王新玲[1] 范建伟 王华[3] 

机构地区：[1]郑州大学土木工程学院,河南郑州450002 [2]郑州水利学校,河南郑州450003 [3]河南省政法管理干部学院,河南郑州450002

出　　处：《世界地震工程》2009年第3期119-123,共5页World Earthquake Engineering

基　　金：河南省教育厅自然科学研究项目(200510459055)

摘　　要：将用碳纤维布加固的损伤混凝土框架结构试件,进行水平低周反复荷载作用下的试验研究。根据试验现象和数据,分析了碳纤维布加固损伤混凝土框架结构在模拟地震作用下,裂缝及塑性铰出现的顺序和位置;绘出了试件的滞回曲线、骨架曲线。结果表明碳纤维布加固损伤框架结构有较好的耗能能力;延性系数达到4.5;其耗能机制是"梁端和柱端均屈服的混合机制",建议CFRP布横向加固至柱和基础连接处的根部。A model of damaged RC frame structure strengthened with CFRP is put forward. The experiment of the model under low-cycle repeated load was studied. Based on experimental results, the orders and positions of oc- curred cracks and plastic hinges on the damaged RC frame structure strengthened with CFRP are analyzed, the hys- teresis curves, skeleton curves and the coefficient of ductility for the RC frame stucture are obtained. The results show that the damaged RC frame structure strengthened with CFRP posses better energy dissipation property and ductility. The failure mechanism is a composite mechanism of the beam and column yielding. It is suggested the column bottoms is strengthened with CFRP transversely.

关 键 词：损伤混凝土框架结构 碳纤维布加固 试验研究 抗震性能 

分 类 号：TU398.5[建筑科学—结构工程]