[1]牛荻涛,陆炫毅,苗元耀,等.盐雾环境下疲劳损伤混凝土氯离子扩散性能[J].西安建筑科技大学学报:自然版,2015,(05):617-620,648.[doi:DOI:10.15986/j.1006-7930.2015.05.001]
 NIU Ditao,LU Xuanyi,MIAO Yuanyao,et al.Diffusion of chloride ions into fatigue-damaged concrete in salt spray environment[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,(05):617-620,648.[doi:DOI:10.15986/j.1006-7930.2015.05.001]
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盐雾环境下疲劳损伤混凝土氯离子扩散性能()
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西安建筑科技大学学报:自然版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年05期
页码:
617-620,648
栏目:
出版日期:
2015-10-29

文章信息/Info

Title:
Diffusion of chloride ions into fatigue-damaged concrete in salt spray environment
文章编号:
1006-7930(2015)05-0617-04
作者:
牛荻涛陆炫毅苗元耀周艳霞
(西安建筑科技大学土木工程学院,陕西 西安 710055 )
Author(s):
NIU Ditao LU Xuanyi MIAO Yuanyao ZHOU Yanxia
( School of Civil Engineering, Xian Univ. of Arch . & Tech ., Xian 710055, China)
关键词:
盐雾疲劳损伤氯离子混凝土
Keywords:
salt spray fatigue damage chloride ions concrete
分类号:
TU528
DOI:
DOI:10.15986/j.1006-7930.2015.05.001
文献标志码:
A
摘要:
针对沿海地区桥梁结构实际服役情况,开展了盐雾环境下弯曲疲劳损伤混凝土的氯离子侵蚀试验研究.研究结果表明:弯曲疲劳荷载对混凝土造成损伤,劣化了混凝土抗氯离子侵蚀性能.氯离子在混凝土中的扩散系数随疲劳损伤变量的增加而增大,并且氯离子在弯曲疲劳受拉区的扩散系数大于受压区.最后引入疲劳荷载影响系数反映疲劳损伤对氯离子扩散系数的影响,拟合得到疲劳荷载影响系数与损伤变量的关系式,为沿海地区桥梁混凝土结构的耐久性研究提供参考.
Abstract:
According to the actual service conditions of bridge structures in coastal areas, a research on d iffusion of chloride ions into bending fatigue-damaged concrete in salt spray environment was carried out. It is shown that bending fatigue causes the damage of concrete and deteriorates the performance of resistance to chloride ion corrosion of the concrete. The chloride diffusion coefficient in the concrete increases with the increase of fatigue damage variables. Besides, chloride diffusion coefficient in tensile region is larger than that in the compressive region. The fatigue load effect coefficient is introduced to reflect the impact of fatigue damage on chloride diffusion coefficient. At last an equation of the fatigue load effect coefficient with the damage variable is simulated which p rovides reference for the study on the durability of bridge concrete structures in coastal areas.

参考文献/References:

References

[1] 伟平,张庆章,顾祥林,等.环境条件和应力水平对混凝土中氯离子传输的影响[J].江苏大学学报:自然科学版,2013,34(1):101-106.

ZHANG Weiping, Z HANG Qingzhang, GU Xianglin, et al . Effects of environmental conditions and stress level on chloride ion transport in concrete [J]. Journal of Jiangsu University: Natural Science Edition, 2013,34(1):101-106.

[2] MITSURU S. Chloride permeability of concrete under static and repeated compressive loading [J]. Cem Concr Res.1995 ,25(4):803-808.

[3] ONTAR W A,MARTIN J P ,POPOVICS J S. Effects of cyclic loading on chloride permeabil ity of plain concrete [C]// ANSARI F ed. Condition Monitoring of Materials and Structures. Austin: Texas American Society of Civil Engineering, 2000.

[4] 李炜,蒋林华,王永亮,等.疲劳作用对混凝土中氯离子扩散系数影响[J].混凝土,2014(1),31-34.

LI Wei, JIANG Linhua, WANG Yongliang, et al. Research on the effect of fatigue on chloride diffusion coefficient in concrete [J]. Concrete, 2014(1) ,31-34.

[5] 蒋金洋,孙伟,王晶,等.弯曲疲劳载荷作用下结构混凝土抗氯离子扩散性能[J].东南大学学报,2010,40(2):362-366.

JIANG Jinyang, SUN Wei, WANG Jing, et al. Resistance to chloride ion diffusion of structural concrete under bending fatigue load [J]. Journal of Southeast University: Natural Science Edition, 2010 ,40(2):362-366.

[6] 王瑞敏,宋玉普,赵国藩.混凝土疲劳积累损伤准则[J]. 水利学报,1992 (5): 72-76.

(下转第648页)

WANG Ruimin, SONG Yupu, ZHAO Guofan. Fatigue accumulative damage rules of concrete [J]. J ournal of hydraulic engineering,1992(5):72-76.

[7] 洪锦祥.含气量与冻融损伤对混凝土疲劳性能的影响[D].南京:东南大学,2007.

HONG Jinxiang. Effect of air content and freezing-thawing damage on concrete fatigue properties [D]. Nanjing: Southeast University ,2007.

[8] 李永强,车惠民.混凝土弯曲疲劳累积损伤性能研究[J].中国铁道科学,1998,19(2):52-59.

LI Yongqiang, CHE Huimin. A study on the cumulative damage to plain concrete due to flexural fatigue [J]. China Rrailway Science, 1998 ,19(2):52-59.

[9] 宋玉普.混凝土结构的疲劳性能及设计原理[M].北京:机械工业出版社,2006.

SONG Yupu. Fatigue behavior and design principle of concrete structures [M]. Beijing: China Mechine Press, 200 6.

[10] 王元战,周海峰.盐雾环境下受荷混凝土中氯离子扩散试验[J].材料科学与工程学报,2013,31(5):645-650.

WANG Yuanzhan, ZHOU Haifeng. Chloride ion diffusion experiment in loaded concrete under salt spray environment [J]. Journal of Materials Science & Engineering, 2013 ,31(5):645-650.

[11] 白敏.氯盐与冻融环境下钢纤维混凝土耐久性能研究[D].西安:西安建筑科技大学,2012.

备注/Memo

备注/Memo:
收稿日期:2015-06-01 修改稿日期:2015-10-12
基金项目:交通运输部应用基础研究基金资助项目(2013319223110)
作者简介:牛荻涛(1963-),男,博士,教授,博导,主要从事混凝土结构耐久性与寿命预测方面研究.E-mail:niuditao@163.com
更新日期/Last Update: 2015-12-14