CFRP加固RC矩形梁极限抗弯承载力与延性计算  

Calculation of Ultimate Strength and Ductility for Rectangular Section RC Beam Strengthened With CFRP

作　　者：马芹永[1] 涂智溢[1] 卢小雨[1] 

机构地区：[1]安徽理工大学土木工程系,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2005年第1期5-9,共5页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省教育厅自然科学重点科研资助项目(2004kj105zd);安徽省优秀青年科技基金资助项目(04043076)

摘　　要：根据碳纤维加固钢筋混凝土结构的受力特征,对碳纤维加固混凝土矩形梁的抗弯极限承载力、刚度和挠度进行了计算,得出不考虑二次受力和考虑二次受力的结构极限承载力的计算公式,以及加固后梁的刚度和挠度计算公式,并对加固后梁的延性进行分析,得出梁的截面曲率延性系数计算式,结合实验数据,验算了计算公式的精确性。In this paper, according to the forcing characteristic of the RC members strengthened with externally bonded carbon fiber sheets, the ultimate strength, stiffness and deflection of rectangular section RC beam strengthened with CFRP are calculated. Obtained are the different formulas to calculate the ultimate strength when the effect of secondary load is considered and unconsidered, and the formula to calculate stiffness and deflection when the beam reinforced. Based on the analysis of ductility for reinforced beam, the coefficient of section ductility curvature for reinforced beam Strengthened with CFRP is deduced. According to the experiment datum, the accuracy of formulas is verified.

关 键 词：碳纤维 钢筋混凝土(RC)矩形梁 极限抗弯承载力 刚度 挠度 延性 

分 类 号：TU755[建筑科学—建筑技术科学]