粘钢加固钢筋混凝土梁的非线性全过程分析  

Nonlinear Analytical Process of the RC Beam Strengthened by Steel Plates

作　　者：张远淼[1] 李大庆[1] 黄加坡[1,2] 

机构地区：[1]武汉大学土木及建筑工程学院,武汉430072 [2]浙江苍南县建筑工程质量管理站,浙江苍南325810

出　　处：《中国农村水利水电》2010年第9期59-62,共4页China Rural Water and Hydropower

摘　　要：根据现行规范中钢筋和混凝土的本构关系,对粘钢加固钢筋混凝土梁进行非线性全过程分析,获得梁正截面弯矩~曲率曲线（M~）,运用平均曲率概念由曲率计算挠度,推导出了刚度计算公式,最后结合算例进行了刚度计算并与规范值、文献值进行比较,计算结果表明计算值能够较好反映刚度变化规律,可供粘钢加固设计参考。A nonlinear total analysis is made of the RCB,which is strengthened by steel plate;By combining the constitutive relation between steel and concrete from the existing standards,the M~ curve is obtained.First the deflection is calculated from the curvature with exerting the conception of curvature;and then the formula of calculating the stiffness is acquired.Finally a comparison is made between the calculation value and specification value.The results indicate that the calculation value well reflectes a change in stiffness,so it serves as a reference for steel-plate gluing.

关 键 词：粘钢加固 非线性分析 M~曲线 挠度 刚度 

分 类 号：TU746.3[建筑科学—建筑技术科学]