- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | CHEN Xiaoyu, TANG Maolin. Main Cable Opening Inspection and Bearing Capacity Evaluation of Suspension Bridge in Service in Myanmar[J]. Journal of Southwest Jiaotong University, 2022, 57(5): 1130-1136. doi: 10.3969/j.issn.0258-2724.20200393
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A cable opening inspection was made on a suspension bridge in service for 25 years in Myanmar to analyze the corrosion status and residual bearing capacity of the main cables. First, the outer protection layer of the main cable was removed; the main cable is partially split with wedge for detection, and the corrosion distribution diagram of the main cable cross-section was established. Then, the main cable steel wire of the bridge was divided into four corrosion stages, and samples of each stage were taken from the cable for laboratory analysis. Finally, a simplified model was used to evaluate the residual bearing capacity of the main cable. The results showed that the corrosion degree of the steel wires decreased from outside to inside along the radial direction of the main cable, and the outermost steel wire had serious matrix corrosion. As the corrosion level increased, the corrosion spot size of the sample steel wires expanded gradually, the strength and ductility of the steel wires decreased by about 3.50% and 9.00%, respectively, and the average tensile strength of the upstream and downstream main cables decreased by about 5.7%.
| [1] |
陈小雨,沈锐利,唐茂林. 悬索桥主缆检测及承载力评估现状与发展[J]. 重庆交通大学学报(自然科学版),2013(增刊1): 760-763.
CHEN Xiaoyu, SHEN Ruili, TANG Maolin. Current situation and development for detection and bearing capacity evaluation of main cable of suspension bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013(S1): 760-763.
|
| [2] |
MAYRBAURL R M. CAMO MICHAEL S T. Guidelines for inspection and strength evaluation of suspension bridge parallel wire cables[R]. New York: Transportation Research Board , 2004.
|
| [3] |
COLFORD B R, CLARK C A. Forth road bridge main cables:replacement/augmentation study[J]. Bridge Engineering, 2010, 163(2): 79-89.
|
| [4] |
沈平. 英国M48塞文桥主缆检查与修复[J]. 世界桥梁,2011(5): 70-73.
|
| [5] |
COCKSEDGE C, HUDSON T, URBANS B, et al. M48 Severn Bridge—main cable inspection and rehab ilitation[J]. Proceedings of the Institution of Civil Engineers, 2010, 163(4): 181-195.
|
| [6] |
NAKAMURA S I, SUZUMURA K. Hydrogen embrittlement and corrosion fatigue of corroded bridge wires[J]. Journal of Constructional Steel Research, 2009, 65(2): 269-277. doi: 10.1016/j.jcsr.2008.03.022
|
| [7] |
辛付开, 韩依璇, 张国荣, 等. 某在役悬索桥平行钢丝主缆检查及腐蚀规律研究[J] 水利与建筑工程学报, 2017, 15（3）: 118-122.
XIN Fukai, HAN Yixuan, ZHANG Guorong, et al. Inspection and corrosion rule of parallel steel wire main cables of suspension bridge in service[J]. Journal of Water Resources and Architectural Engineering, 2017, 15(3): 118-122.
|
| [8] |
陈小雨,唐茂林. 温度和湿度环境下未镀锌高强钢丝的腐蚀速率谱[J]. 西南交通大学学报,2018,53(2): 253-259. doi: 10.3969/j.issn.0258-2724.2018.02.005
CHENG Xiaoyu, TANG Maolin. Corrosion rate of non-galvanized high-strength steel wires under different temperature and humidity conditions[J]. Journal of Southwest Jiaotong University, 2018, 53(2): 253-259. doi: 10.3969/j.issn.0258-2724.2018.02.005
|
| [9] |
陈小雨,唐茂林. 悬索桥主缆镀锌钢丝腐蚀过程及抗力变化试验研究[J]. 桥梁建设,2018,48(1): 60-64. doi: 10.3969/j.issn.1003-4722.2018.01.011
CHENG Xiaoyu, TANG Maolin. Experimental study of corrosion process and resisitance changes of galvanized steel wires for main cable of suspension bridge[J]. Bridge Construction, 2018, 48(1): 60-64. doi: 10.3969/j.issn.1003-4722.2018.01.011
|
| [10] |
陈小雨,唐茂林. 悬索桥主缆钢丝腐蚀速率计算方法[J]. 公路交通科技,2019,36(2): 43-49.
CHEN Xiaoyu, TANG Maolin. A method for calculating corrosion rate of main cable steel wires of suspension bridge[J]. Journal of Highway and Transportation Research and Development, 2019, 36(2): 43-49.
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