为了研究既有钢筋混凝土双曲拱桥的承载力,依据动态可靠性理论和桥梁结构的实际状况,以一座既有钢筋混凝土双曲拱桥为工程背景,根据其实际工作状态和检定结果对其进行了安全性评估,并依据评估结果和该桥的实际通过能力要求,提出了提高该桥承载能力和运营安全性及可靠度的具体维修加固措施.通过加固前后该桥抗力统计参数的对比分析可知,桥梁的抗力统计参数及可靠性指标得到了较大地提高.动态可靠性理论的应用和维修加固措施可为既有钢筋混凝土双曲拱桥的运营养护提供参考.%In order to investigate its bearing capacity,an existing reinforced concrete double-curved arch bridge is taken as an example to be evaluated on account of dynamic reliability theory and actual situation of bridge structure.Security evaluation is carried out on the basis of the actual working conditions and the verification results,and the specific maintenance and reinforcement measures of improving bearing capacity,operation safety and reliability are put forward by the assessment results and practical carrying capacity of this bridge.According to the comparable analysis of the statistical parameter of the force resistance before and after reinforcement,the maintenance and reinforcement measures proposed in this paper are extremely effective.
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