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采用时变可靠度理论,分析了桥梁加固后抗力和荷载的变化规律。讨论了钢筋锈蚀、混凝土碳化及荷载变化等因素对加固后既有桥梁结构承载力的影响,并结合一工程实例进行了加固后可靠度计算。
The time-dependent reliability theory is adopted to analyze the variation of the resistance and the load after the bridge is strengthened. The effects of steel corrosion, concrete carbonation and load change on the bearing capacity of the existing bridge structures after the reinforcement are discussed. The reliability calculation of the strengthened structures is carried out based on an engineering example.