粘钢加固钢筋混凝土梁可靠性分析

为了按照《建筑结构可靠度设计统一标准》（GB50068—2001）要求的可靠指标进行钢筋混凝土梁的粘钢加固设计，根据现行《混凝土结构设计规范》（GB50010—2002）和Chen—Teng模型建立了钢筋混凝土粘钢加固梁的极限状态方程，通过一次二阶矩法计算了由使用功能改变引起的粘钢加固混凝土梁抗弯可靠性指标．计算结果表明按此方程设计的粘钢加固混凝土梁可靠指标基本大于3．7，满足《建筑结构可靠度设计统一标准》（GB50068—2001）的要求，可以按此方法进行混凝土梁的粘钢加固．

Reliability Analysis of Reinforced Concrete Beams Strengthened with Steel Plates

The limit state equation of reinforced concrete beam with externally bonded steel was established in accordance with the "Code for Design of Concrete Structures(GB 50010-2002)"and the Teng-Chen Model for designing with reliability index as demanded by the"Unified Standard for Reliability Design of Building Structures(GB 50068-2001)".The reliability index of reinforced concrete beam strengthened with bonded steel plates due to increased loads was calculated with First Order Second Moment.It was shown that the reliability indices of steelbonded reinforced concrete beam designed in this method were over 3.7 and could meet the demands of the"Unified Standard for Reliability Design of Building Structures(GB 50068-2001)".So reinforced concrete beam with externally bonded steel could be designed in this method.