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.
出处
《中国农村水利水电》
北大核心
2010年第9期59-62,共4页
China Rural Water and Hydropower
关键词
粘钢加固
非线性分析
M~曲线
挠度
刚度
strengthening by steel plate
nonlinear analysis
M~ curve
deflection
stiffness
