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基于动态可靠性加固拱桥剩余寿命预测

Keywords: 桥梁工程,寿命预测,动态可靠性,加固拱桥,控制截面

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Abstract:

采用动态可靠性基本理论,在进行随机过程分析的基础上,给出在役桥梁荷载和抗力的时变演化规律。将可靠度评估方法运用到双曲拱桥中,提出针对拱桥特征的基本假设,给出可靠性指标的计算方法和详细分析步骤,并强调计算过程中的关键技术。通过具体应用实例即东门大桥主桥的使用寿命预测,实现对加固后的拱桥寿命预测。加固后桥梁的寿命预测能够有效的检验加固方法的合理性,所采用的研究思路、方法具有较强的实用性,为同类桥梁可靠性综合评价提供理论基础。

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