Key techniques for catwalk design and construction of single-span rotating-cable suspension bridge in mountainous

Authors

• Zhu Shuo, Engineering Technology Institute of China Railway No .4 Engineering Group , Hefei , Anhui 230022 , ChinaFollow
• Fu Lihong, Engineering Technology Institute of China Railway No .4 Engineering Group , Hefei , Anhui 230022 , China
• Zhang Weichao, Engineering Technology Institute of China Railway No .4 Engineering Group , Hefei , Anhui 230022 , China
• Li Bo, The First Engineering Co ., Ltd. of CRCE Group , Hefei , Anhui 230041 , China

Abstract

To summarize the key technical experience in catwalk construction for rotating-cable suspension bridges under complex mountainous conditions, this paper took the Three Gorges Bridge on the Yellow River (a single-tower and single-span rotating-cable steel truss girder suspension bridge with a main span of 540 m) as the engineering background. A two-span continuous catwalk without wind-resistant cables was used as the superstructure construction platform, and three major technical countermeasures in catwalk design and construction were systematically elaborated. In the 146 m cable-girder intersection area on the north side, the catwalk and the steel girder collided, and setting up the looping anchorage system for a catwalk was difficult. To address these problems, brackets and anchor beams were set at the front end of the anchorage for anchoring catwalk cables. Following the schedule of girder erection, the profile-shifted steel frame on the north side was installed in two stages to realize the avoidance of the catwalk from the steel girder. The bridge site was in the Three Gorges Reservoir area of the Yellow River, and the construction condition of the catwalk was poor. The pilot cable of Dyneema rope was pulled across the river from cable tower to looping anchorage by using the unmanned aerial vehicle (UAV) + sag control method. The single hook hanging method was used to erect the portal support cable, while the double-suspension-ring method was used to erect the catwalk load-bearing cable. Construction practice shows that this method has the advantages of low traction requirements, convenient sag control, and high construction efficiency, and exhibits good adaptability to bridge erection construction in the steep valley environment in mountainous areas.

Publication Date

8-16-2026

DOI

10.14048/j.issn.1671-2579.2026.04.020

First Page

186

Last Page

193

Submission Date

August 2026

Recommended Citation

Shuo, Zhu; Lihong, Fu; Weichao, Zhang; and Bo, Li (2026) "Key techniques for catwalk design and construction of single-span rotating-cable suspension bridge in mountainous," Journal of China & Foreign Highway: Vol. 46: Iss. 4, Article 20.
DOI: 10.14048/j.issn.1671-2579.2026.04.020
Available at: https://zwgl1980.csust.edu.cn/journal/vol46/iss4/20

Reference

[1]光明,李鸿盛,殷建超.刘家峡大桥三跨连续式猫道设计与架设 [J].中外公路,2013,33(3):135-139.Guang Ming,Li Hongsheng,Yin Jianchao.Design and erection of three-span continuous catwalk of Liujiaxia bridge [J].Journal of China & Foreign Highway,2013,33(3):135-139.
[2]赵小静.宜昌至喜长江大桥三跨连续猫道设计与施工[J].交通科技,2016 (3):60-63.Zhao Xiaojing.Design and construction of three-span continuous catwalk of Yichang Zhixi Yangtze River bridge[J].Transportation Science & Technology,2016 (3):60-63.
[3]何加江.武汉杨泗港长江大桥猫道设计 [J].世界桥梁,2021,49(2):18-24.He Jiajiang.Catwalk design of Yangsigang Changjiang River bridge in Wuhan [J].World Bridges,2021,49(2):18-24.
[4]张明闪,王奇锐.贵瓮清水河大桥人工配卷扬机空间状态法先导索施工技术 [J].公路,2018,63(5):133-137.Zhang Mingshan,Wang Qirui.Pilot cable construction technology of space state method with manual matching winch for Guiweng Qingshuihe bridge [J].Highway,2018,63(5):133-137.
[5]张磊,杨益波.山区千米级悬索桥猫道设计及施工技术[J].公路,2021,66(1):153-157.Zhang Lei,Yang Yibo.Design and construction technology of catwalk for kilometer-level suspension bridge in mountainous areas [J].Highway,2021,66(1):153-157.
[6]宋洪喜,韩胜利.武汉杨泗港长江大桥超大跨径猫道施工关键技术 [J].世界桥梁,2021,49(4):13-18.Song Hongxi,Han Shengli.Key construction technology of super-large span catwalk of Yangsigang Changjiang River bridge in Wuhan [J].World Bridges,2021,49(4):13-18.
[7]周小毛.悬索桥猫道绳水面浮托往复牵引架设技术 [J].世界桥梁,2020,48(1):26-29.Zhou Xiaomao.Water-surface-floating supported to-and-fro dragging and erection technique for catwalk ropes of suspension bridge [J].World Bridges,2020,48(1):26-29.
[8]薛有利,何博文,林阳.黄河三峡大桥桥型方案比选 [J].桥梁建设,2023,53(增刊 1):134-139.Xue Youli,He Bowen,Lin Yang.Bridge type selection for Yellow River Three Gorges bridge [J].Bridge Construction,2023,53(S1):134-139.
[9]高双剑,张伟超,付立宏,等.山区独塔回转缆钢桁梁悬索桥建造关键技术 [J].中外公路,2026,46(3):194-200.Gao Shuangjian,Zhang Weichao,Fu Lihong,et al.Key construction technologies of single-tower rotating cable steel truss suspension bridge in mountainous areas [J].Journal of China & Foreign Highway,2026,46(3):194-200.
[10]周霆,陶齐宇,李则均.泸定大渡河桥重力锚碇基础形式研究 [J].中外公路,2024,44(1):155-160.Zhou Ting,Tao Qiyu,Li Zejun.Research on gravity anchorage foundation of Dadu River bridge in Luding [J].Journal of China & Foreign Highway,2024,44(1):155-160.
[11]杨胜,樊小伟.山区钢桁架悬索桥设计与施工 [J].中外公路,2021,41(6):141-144.Yang Sheng,Fan Xiaowei.Design and constructions of steel truss suspension bridge in mountainous area [J].Journal of China & Foreign Highway,2021,41(6):141-144.
[12]彭志辉,潘桂林,彭成明,等.温州瓯江北口大桥缆梁相交区加劲梁吊装关键技术 [J].桥梁建设,2022,52(6):140-146.Peng Zhihui,Pan Guilin,Peng Chengming,et al.Key hoisting techniques for stiffening girder segments in cable-girder intersection area of Oujiang River north estuary bridge in Wenzhou [J].Bridge Construction,2022,52(6):140-146.
[13]裴宾嘉,王忠海,雍翔,等.西藏通麦空间缆地锚式悬索桥主缆和钢桁梁施工技术 [J].中外公路,2016,36(2):165-168.Pei Binjia,Wang Zhonghai,Yong Xiang,et al.Construction technology of main cable and steel truss girder of Tibet Tongmai spatial cable ground-anchored suspension bridge [J].Journal of China & Foreign Highway,2016,36(2):165-168.
[14]蒋明鹏,袁飞,李冕.深中通道伶仃洋大桥猫道及牵引系统设计与施工 [C]//2024年全国工程建设行业施工技术交流会论文集,2024:143-146.Jiang Mingpeng,Yuan Fei,Li Mian.Design and construction of catwalk and traction system for Lingdingyang bridge of Shenzhen ‒ Zhongshan link [C]//Proceedings of the 2024 National Construction Industry Construction Technology Exchange Conference,2024:143-146.
[15]李猛,朱小金.马鞍山长江公路大桥悬索桥先导索过江施工技术 [J].世界桥梁,2015,43(6):16-19.Li Meng,Zhu Xiaojin.River-crossing construction for pilot ropes of suspension bridge of Maanshan Changjiang River highway bridge [J].World Bridges,2015,43(6):16-19.
[16]朱明双,魏耀华,林康,等.白洋长江大桥猫道施工关键技术 [J].市政技术,2021,39(4):73-76.Zhu Mingshuang,Wei Yaohua,Lin Kang,et al.Key technology of catwalk construction of Baiyang Yangtze River bridge [J].Municipal Engineering Technology,2021,39(4):73-76.
[17]张晖,徐永明,李志鹏.大跨径悬索桥猫道架设牵引系统施工技术 [J].铁道建筑技术,2020 (8):112-115.Zhang Hui,Xu Yongming,Li Zhipeng.Construction technology of catwalk erecting traction system for large span suspension bridge [J].Railway Construction Technology,2020 (8):112-115.
[18]李刚.至喜长江大桥大江桥猫道先导索高空横移法架设技术 [J].世界桥梁,2018,46(2):25-29.Li Gang.Overhead transverse moving erection technique for catwalk pilot rope of dajiang bridge of Zhixi Changjiang River bridge [J].World Bridges,2018,46(2):25-29.
[19]屈加林,毛超军,靖振帅.驸马长江大桥猫道承重索架设双吊环法施工技术 [J].施工技术,2017,46(22):22-25.Qu Jialin,Mao Chaojun,Jing Zhenshuai.Construction technology of double-ring method for catwalk bearing cable erecting in Fuma Yangtze River bridge [J].Construction Technology,2017,46(22):22-25.