嵌入式BFRP筋与外包BFRP布组合加固钢筋混凝土方柱性能研究  

Seismic behavior of square RC columns strengthened by near-surface-mounted BFRP bars and BFRP sheets jacketing

作　　者：吴刚[1] 姚刘镇[1] 杨慎银[1] 丁里宁[1] 吴智深[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《建筑结构》2013年第19期10-14,4,共6页Building Structure

基　　金：国家"十二五"科技支撑计划(2011BAB03B09);交通部西部交通建设科技项目(201131816980);国家国际科技合作专项项目(2012DFG20510)

摘　　要：提出了嵌入式BFRP筋与外包BFRP布组合加固钢筋混凝土(RC)方柱的方法,为验证其有效性,完成了包括1根对比柱在内的4根RC柱的低周反复荷载试验,分析了各柱的破坏模式、承载力、延性和滞回特征。试验结果表明复合加固效果显著,相对于单独使用一种加固方法的试件,其承载力和延性显著提高,且存在明显的复合效应。在试验基础上,给出了复合加固时BFRP筋强度的取值及承载力计算方法和简化设计方法,可指导实际工程。A new strengthening technique combining near-surface-mounted （NSM） basalt fiber reinforced polymer （BFRP） bars with BFRP sheets jacketing to strengthen square reinforced concrete （RC） columns was proposed. A total of four RC eolumns including one control specimen were tested under low cyclic loading to examine the effectiveness of this hybrid technique. The experimental results including the failure modes, bearing capacity, ductility and the hysteretic properties of the specimens were analyzed. The results show that hybrid strengthening techniques is effective with increase of strength and ductility due to the hybrid effects. Based on the experimental results, the strength of the BFRP bars in strengthening technique were provided. Furthermore, a simplified design method was proposed for reference.

关 键 词：嵌入BFRP筋法 外包BFRP布法 复合加固 承载力计算 

分 类 号：TU375.3[建筑科学—结构工程]