预应力CFRP布加固混凝土梁可靠性研究  

Reliability Analysis of the Prestressing Force CFRP Strengthening RC Beams

作　　者：赵军[1] 

机构地区：[1]桂林工学院土木工程系,广西桂林541004

出　　处：《桂林工学院学报》2005年第2期166-168,共3页Journal of Guilin University of Technology

基　　金：广西区教育厅科研资助项目(桂教科研[2004]20)

摘　　要：为使碳纤维(CFRP)的高强度能充分发挥其作用,通过对5根混凝土梁在反向加载条件下的碳纤维加固试验研究,对在反向加载条件下碳纤维加固前后的梁可靠度进行了分析和比较,反向荷载从14kN增加到20kN,结构的可靠度分别比未施加反向荷载时增加0.713,0.838和1.007.因此利用该法加固结构可充分利用高强的CFRP及更好地控制裂缝,从而对提高梁的可靠性有更好的效果.In order to make use of the high strength of CFRP,an analysis is based on the experimental study on the reliability of five beams with opposite loading, before and after being strengthened by the CFRP. Then a new way of strengthening and repairing the concrete structure is put forward.The result shows that the structural reliability will increase to 0.713,0.838 and 1.007 when the opposite loading is added from 14 kN to 20 kN. Therefore the new way to strengthen the beams can make good use of the high-strength of CFRP and well control the rack of structural members, and can greatly increase the security.

关 键 词：CFRP 加固 混凝土梁 可靠度 反向加载 

分 类 号：TU378.203[建筑科学—结构工程]