复合材料碳纤维布加固含裂纹钢梁实验研究  

The Experimental Study of Strengthening Damaged Steel Beam with Carbon Fiber-Reinforced Polymer Sheets

作　　者：童谷生[1] 张予[1] 林春阳[1] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《华东交通大学学报》2007年第4期1-4,共4页Journal of East China Jiaotong University

基　　金：华东交通大学校立科研基金项目"FRP加固含损伤钢梁;板的静力与疲劳特性研究"(06ZKTM11)

摘　　要：采用15根模型钢梁的试验研究,结果表明:利用不同长度,不同厚度补片加固后的梁静强度的变化是不一样的;全长补片短补片长度加固效果好,随补片厚度的增加其静强度也有所增加,与未加固对比梁相比较最大静承载力提高55%;梁加固前后的刚度变化不太明显;加固后梁的延性有所降低.Fifteen pre- cracked steel beams are tested through three point bending experiment. The difference between the repaired steel beams with carbon fiber polymer sheets and control beams is studied in details. The experiments shows improvement of pre - cracked steel beams strengthened with CFRPs have an average raise more than 37 % in strength, maximums is 55 %. Whereas the flexural stiffness is no more than control beam＇s.

关 键 词：碳纤维布 加固 裂纹钢梁 静强度 

分 类 号：TM392.3[电气工程—电机]