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腐蚀预应力钢绞线的疲劳试验分析

DOI: 10.3969/j.issn.1006-7043.201308054

Keywords: 预应力混凝土, 钢绞线, 腐蚀, 疲劳性能, 疲劳寿命, 应力水平, 疲劳强度

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Abstract:

为了研究钢绞线腐蚀后的疲劳性能,采用通电加速腐蚀方法制作了包括5根无腐蚀与22根腐蚀预应力钢绞线试件,并通过轴向拉伸疲劳试验对预应力钢绞线腐蚀后的疲劳性能退化规律进行了研究分析,试验主要考察了腐蚀率与应力水平对钢绞线疲劳寿命的影响。试验结果表明,腐蚀后的钢绞线疲劳寿命显著降低,腐蚀钢绞线的名义应力幅与疲劳寿命在双对数坐标系下仍近似符合线性关系,同级荷载水平下的钢绞线疲劳寿命随腐蚀率的增长按指数函数衰减。此外,本文根据试验结果还建立了腐蚀钢绞线的疲劳曲面方程,并给出了不同保证率下的腐蚀钢绞线疲劳强度建议值。

References

[1]  SCHUPACK M A. Survey of the durability performance of post-tensioning tendons [J]. ACI Journal, 1978, 75(10): 501-510.
[2]  SCHUPACK M, SUAREZ M G. Some recent corrosion embrittlement failures of prestressing systems in the United States [J]. PCI Journal, 1982, 27(2):38-55.
[3]  郑亚明, 欧阳平, 安琳. 锈蚀钢绞线力学性能的试验研究[J]. 现代交通技术, 2005, 2(6): 33-36.ZHENG Yaming, OUYANG Ping, AN Lin. Study on the test of mechanical properties of corroded steel bar embedded in concrete [J]. Modern Technique of Communication, 2005, 2(6): 33-36.
[4]  罗小勇, 李政. 无粘结预应力钢绞线锈蚀后力学性能研究[J]. 铁道学报, 2008, 30(2): 108-112.LUO Xiaoyong, LI Zheng. Mechanical performance of corroded unbonded prestressed steel stranded wires [J]. Journal of the China Railway Society, 2008, 30(2): 108-112.
[5]  曾严红, 顾祥林, 张伟平, 等. 锈蚀预应力筋力学性能研究[J]. 建筑材料学报, 2010, 13(2): 169-174.ZENG Yanhong, GU Xianglin, ZHANG Weiping, et al. Study on mechanical properties of corroded prestressed tendons [J]. Journal of Building Materials, 2010, 13(2): 169-174.
[6]  余芳. 钢绞线腐蚀后的部分预应力混凝土梁受力性能研究[D]. 大连: 大连理工大学, 2013: 32-34.YU Fang. Study on mechanical performance of partial prestressed concrete beams with corroded strand [D]. Dalian: Dalian University of Technology, 2013: 32-34.
[7]  LI H, LAN C M, JU Y, et al. Experimental and numerical study of the fatigue properties of corroded parallel wire cables [J]. Journal of Bridge Engineering, 2012, 17(2): 211-220.
[8]  BARTON S C, GARRY W. Accelerated corrosion and embrittlement of high-strength bridge wire[J]. Journal of Materials in Civil Engineering, 2000, 12(1): 33-38.
[9]  仲伟秋,贡金鑫. 钢筋电化学快速锈蚀试验控制方法[J]. 建筑技术开发, 2002, 29(4): 28-29.ZHONG Weiqiu, GONG Jinxin. Control method for quick electrochemical corrosion experiment of rebars [J]. Building Technique Development, 2002, 29(4): 28-29.
[10]  中华人民共和国住房和城乡建设部. GB/T 50082-2009普通混凝土长期性能和耐久性能试验方法[S]. 北京:中国建筑工业出版社, 2010.
[11]  李君实. 钢绞线脉动拉伸疲劳试验和双层叠加式夹具[J]. 理化检验:物理分册, 2002, 38(10): 438-441.LI Junshi. The fatigue experiment of steel strand with pulsating tensile load and double piled clamping apparatus [J]. Physical Testing and Chemical Analysis (Part A: Physical Testing), 2002, 38(10): 438-441.
[12]  马林. 国产1860级低松弛预应力钢绞线疲劳性能研究[J]. 铁道标准设计, 2000, 20(5): 21-23.MA Lin. Study on fatigue performance of low relaxation prestressed steel strand with the strength level of 1860 MPa [J]. Railway Standard Design, 2000, 20(5): 21-23.
[13]  休尔施(Suresh S.).材料的疲劳[M]. 王中光, 等译. 北京:国防工业出版社, 1993: 277-278.
[14]  张卫平,李士彬,顾祥林,等. 自然锈蚀钢筋的轴向拉伸疲劳试验[J].中国公路学报,2009, 22(2): 53-58. ZHANG Weiping, LI Shibin, GU Xianglin, et al. Experiment on axial tensile fatigue of naturally corroded steel bar [J]. China Journal of Highway and Transport, 2009, 22(2): 53-58.

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