|本期目录/Table of Contents|

[1]张强先,赵华伟,方园,等.悬索桥主缆钢丝腐蚀与防护的应用进展[J].南京工业大学学报(自然科学版),2020,42(03):278-283.
 ZHANG Qiangxian,ZHAO Huawei,FANG Yuan,et al.Application progress on corrosion and protection of main cable steel wire of suspension bridge[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(03):278-283.
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悬索桥主缆钢丝腐蚀与防护的应用进展()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年03期
页码:
278-283
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
Application progress on corrosion and protection of main cable steel wire of suspension bridge
文章编号:
1671-7627(2020)03-0278-06
作者:
张强先赵华伟方园方海
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
ZHANG QiangxianZHAO HuaweiFANG YuanFANG Hai
College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
悬索桥 主缆 除湿 缠包带 柔性涂料
Keywords:
suspension bridge main cable dehumidification tape-wrap flexible coating
分类号:
TB332
文献标志码:
A
摘要:
作为悬索桥最主要的承重构件,主缆钢丝由于长期暴露在大气环境中容易产生锈蚀等问题,将直接危害到悬索桥结构的安全,因此悬索桥主缆钢丝的腐蚀防护问题成为了一个亟待解决的课题。首先介绍了国内外悬索桥主缆钢丝腐蚀现状以及国内主要悬索桥主缆防护基本情况,然后从主缆钢丝腐蚀类型和腐蚀影响因素的角度阐述了主缆钢丝腐蚀的原因。重点介绍了国内外现行悬索桥主缆钢丝腐蚀防护的5种方法:传统的主缆腻子圆形钢丝缠绕涂层法、合成护套防护系统、主缆除湿系统、S形钢丝缠绕与柔性涂料表面密封以及除湿系统联合使用、纤维增强弹性体缠包带与除湿系统组合使用。其中,传统的主缆腻子圆形钢丝缠绕涂层法中涂层和腻子层容易老化、开裂,不能从根本上阻止主缆钢丝腐蚀的发生; 合成护套防护系统也没有从根本上解决防护层的老化开裂问题; 主缆除湿系统有一定的作用,但是单独使用效果往往不好; S形钢丝缠绕与柔性涂料表面密封以及除湿系统联合使用、纤维增强弹性体缠包带与除湿系统组合使用这两种方法能够有效地阻止腐蚀性物质进入主缆钢丝内部。最后分析和探讨了未来悬索桥主缆防护的发展方向。
Abstract:
As the most important load-bearing component of the suspension bridge, the main cable steel wire is easy to rust due to the long-term exposure to the atmospheric environment, which directly affect the safety of suspension bridge structure. Therefore, the corrosion protection of the main cable of the suspension bridge has become an urgent problem to be solved. Firstly, the corrosion status of the main cable steel wire of suspension bridge and the basic situation of the protection of main cable at home and abroad were introduced. Then, the causes of the main cable steel wire corrosion were explained from the aspects of the corrosion type and corrosion influencing factors of the main cable of suspension bridges. Five methods for corrosion protection of main cable steel wire of suspension bridge at home and abroad were mainly introduced, including traditional round steel wire protective coating system, synthetic sheath protection system, main cable dehumidification system, S-shaped steel wire winding and flexible coating surface sealing, combined use of dehumidification system, and combined use of fiber-reinforced elastomer tape-wrap and dehumidification system. Among these, in the traditional round steel wire protective coating system, the coating and putty layer were prone to aging and cracking, which cannot fundamentally prevent the corrosion of main cable. In addition, the synthetic sheath protection system had not fundamentally solved the aging and cracking of the protective layer. Furthermore, the main cable dehumidification system had a certain effect, but the effect of using it alone was often small. However, the last two methods can effectively prevent corrosive substances from entering the main cable wire. Finally, the development direction of main cable protection of suspension bridge in the future was analyzed and discussed.

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备注/Memo

备注/Memo:
收稿日期:2019-12-23
作者简介:张强先(1994—),男,E-mail:thanku2018@163.com; 方园(联系人),副研究员,E-mail:yuanfang@njtech.edu.cn.
引用格式:张强先,赵华伟,方园,等.悬索桥主缆钢丝腐蚀与防护的应用进展[J].南京工业大学学报(自然科学版),2020,42(3):278-283.
ZHANG Qiangxian, ZHAO Huawei, FANG Yuan, et al. Application progress on corrosion and protection of main cable steel wire of suspension bridge[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(3):278-283..
更新日期/Last Update: 2020-05-31