海域混凝土桥梁腐蚀及劣化机理研究
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摘要
通过对某沿海桥梁调研分析,确定了海域混凝土桥梁腐蚀最严重的部位,基于Fick第二定律研究了氯离子侵蚀引起钢筋锈蚀对结构耐久性的影响。计算了不同钢筋锈蚀率情况下钢筋屈服荷载,总结出二者之间的关系。基于已锈蚀钢筋混凝土构件力学性能试验,分析了锈蚀构件刚度演化规律。
Based on the investigation and analysis of a coastal bridge,the most serious corrosive parts of concrete bridges in the sea area are determined. By Fick's second law,the influence of chloride ion corrosion on the durability of structures is studied. The yield loads of steel bars under different corrosion rates are calculated,and the relationship between them is summarized. Based on the mechanical properties test of corroded reinforced concrete members,the stiffness evolution law of corroded members was analyzed.
Based on the investigation and analysis of a coastal bridge,the most serious corrosive parts of concrete bridges in the sea area are determined. By Fick's second law,the influence of chloride ion corrosion on the durability of structures is studied. The yield loads of steel bars under different corrosion rates are calculated,and the relationship between them is summarized. Based on the mechanical properties test of corroded reinforced concrete members,the stiffness evolution law of corroded members was analyzed.
引文
[1]陶甫先.腐蚀RC受弯构件受力性能研究[D].西安:长安大学,2015.
[2]孔航挺.非均匀锈蚀下钢筋砼耐久性退化机理及剩余承载力分析[D].杭州:浙江大学,2018.
[3]梁岩,班亚云,罗小勇,等.不同荷载模式下锈蚀钢筋力学性能研究[J].地震工程与工程振动,2017,37(4):22-30.
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[5]刘荣桂,催钊玮,陆春华,等.预应力混凝土氯盐侵蚀模型及耐久性分析[J].徐州工程学院学报(自然科学版),2012,27(1):14-18.
[6]张延年,卢珍.基于全浸泡外加电流法的锈蚀钢筋力学性能试验[J].沈阳建筑大学学报(自然科学版),2012,28(6):1054-1058.
[2]孔航挺.非均匀锈蚀下钢筋砼耐久性退化机理及剩余承载力分析[D].杭州:浙江大学,2018.
[3]梁岩,班亚云,罗小勇,等.不同荷载模式下锈蚀钢筋力学性能研究[J].地震工程与工程振动,2017,37(4):22-30.
[4]蒋连接,李爱群.反复荷载下锈蚀钢筋混凝土柱力学性能的试验研究[J].工业建筑,2012,42(2):66-69.
[5]刘荣桂,催钊玮,陆春华,等.预应力混凝土氯盐侵蚀模型及耐久性分析[J].徐州工程学院学报(自然科学版),2012,27(1):14-18.
[6]张延年,卢珍.基于全浸泡外加电流法的锈蚀钢筋力学性能试验[J].沈阳建筑大学学报(自然科学版),2012,28(6):1054-1058.