CFRP加固组合梁的应力与变形分析  

STRESS AND DEFLECTION ANALYSIS OF COMPOSITE GIRDERS STRENGTHENED WITH CFRP

作　　者：焦铁涛[1] 高尔新[1] 彭福明[2] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100086 [2]中冶集团建筑研究总院,北京100088

出　　处：《钢结构》2008年第1期13-15,共3页Steel Construction

摘　　要：由于腐蚀或疲劳使钢梁受拉翼缘发生不同程度的损伤,导致组合梁的承载能力和刚度下降。在钢梁的受拉翼缘上侧粘贴CFRP进行加固可以提高其承载能力和刚度。在推导出计算粘贴CFRP加固后组合梁的截面应力的基础上,进一步推导出均布荷载作用下组合梁加固后的挠度计算公式,最后通过算例予以证明。A significant number of steel-concrete composite beams are in service and many of them are in urgent need of rehabilitation due to fatigue or corrosion damage, especially at the bottom flange of these members which can reduce their stiffness and bearing capacities. CFRP laminates were adhesively bonded to the outer surface of the tension flange of deteriorated steel and steel-concrete composite beams to restore their ultimate bearing capacities and stiffness. Calculating formula of section stress of the repaired composite beam was deduced, and the calculating formlua of deflection of the beam under uniform load was also obtained.

关 键 词：碳纤维增强复合材料 截面应力 挠度 

分 类 号：TU398.9[建筑科学—结构工程]