CFRP加固现浇框架结构节点柱端的强柱弱梁效果  

Analysis on Efficiency of Reinforced Concrete Frame Joint Retrofitted with Hybridized CFRP for Strong Column and Weak Beam

作　　者：彭文超[1] 王兴国[1] 屈华静[1] 葛楠[1] 

机构地区：[1]河北联合大学河北省地震工程研究中心,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2012年第4期102-108,共7页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：国家自然科学基金项目(51078124)

摘　　要：对现浇钢筋混凝土框架结构节点梁端与柱端抗弯承载力进行了分析计算,考虑了现浇楼板内钢筋对梁抗弯承载力的影响,对现浇框架结构普通梁柱节点和在柱端外包碳纤维的节点的计算结果进行对比分析。结果表明,现浇楼板内的钢筋参与了梁的工作,提高了梁的抗弯承载力。柱端外包碳纤维后柱端承载力得到了明显的提高,推迟了柱端塑性铰的出现,更加接近总体机制破坏。The calculation for flexural capacity of beam end and column end were carried out, with the strength effect of slab bar being included. The results for traditional joint specified in design code and that for the joint retro-fitted with hybridized CFRP were compared. The results presented the efficiency of flexural strength improvement in beam. It is also shown that for the joint retrofitted with hybridized CFRP, the stress in the reinforce bar for column will increase significantly, while the plastic pivot of column appears later, which tend to exhibit a failure type closer to the beam-pivot or ductile mode.

关 键 词：框架节点 塑性铰 强柱弱梁 碳纤维加固 

分 类 号：TU398.2[建筑科学—结构工程]