钢筋混凝土结构中非均匀锈蚀钢筋的力学性能的研究.pdfVIP

第7卷增刊 铁道科学与工程学报 V01．7Suppl． 2010年8月 JOURNALoFRAJLWAYSCJENCEANDENGJNEERlNGAug．2010 钢筋混凝土结构中非均匀锈蚀钢筋的力学性能研究 夏晋。金伟良 (浙江大学 结构工程研究所，杭州，310058) 摘要：为了研究我国目前常用的熟轧钢筋的锈后力学性能，采用“电渗一恒电流一干湿循环”方法和溶液模拟方法对钢 筋进行加速锈蚀，并通过拉伸试验得到了曲线，基于拉伸试验研究了锈后钢筋的各类力学性能，如屈服强度、极限强度等。 给出了考虑钢筋截面损失和应力集中影响后的非均匀锈蚀钢筋屈服强度和极限强度的影响系数，并给出了溶液中锈蚀钢 筋和氯盐侵蚀环境中锈蚀钢筋屈服强度和极限强度的计算方法。 关键词：钢筋混凝土结构；钢筋；非均匀锈蚀；力学性能 中图分类号：TU375．1 文献标志码：A Mechanical ofthereinforcementwithnon—·uniformcorrosioninRCstructures performance XIA Jin，JIN Wei—liang ofStructural (Institute University，Hangzhou310058，China) Engineering，Zhejiang orderto themechanical ofthe hot—rolledsteelusedinChi． Abstract：In corrosion—damaged study performance naat kindsof and Current—Wet present。twoacceleratingmethod。including“Elecla-oosmosis—constantDry and solution toaccelerate the used thecorrosionof reinforce． cycle”(ECWD)methodsimulatingmethod。were ment．强ecurveswere afterthetensile themechanical as got test，and performances，suchyieldstrength，uld— mate obtainedfromthetensile influeneecoefficientsofthenon—uniformcor- strength。etc．were test．Then．the rosiononthe andultimatetensile were after the cross-·section yieldstrength strengthgivenseparatelyconsidering lossandthestress of and concentrationef