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基于性能的混凝土桥梁全寿命养护策略方法研究

DOI: 10.3969/j.issn.1674-0696.2013.05.05, PP. 918-925

Keywords: 混凝土桥,基于性能,全寿命,桥梁维护,策略,concretebridges,performance-based,lifecycle,bridgemaintenance,strategy

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Abstract:

:?分析了钢筋混凝土和预应力混凝土桥梁在规划设计、施工和运营养护中可能存在的问题,如桥墩不均匀沉降、水平位移、温度变化、裂缝超标、原桥设计荷载等级偏低、混凝土收缩徐变等引起的承载力不足,以及氯离子渗透、钢筋腐蚀、混凝土碳化及表层剥落、主梁下挠开裂、雨水锈蚀等造成的混凝土结构耐久性衰退和性能退化;从全寿命安全、适用、耐久、经济和环保等性能角度和结构可持续性方面,研究了基于性能的桥梁养护目标、性能水准及相应的维护策略和方法。

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