重庆寸滩长江大桥主缆施工技术介绍

Introduction of Main Cable Construction Technology for Chongqing Cuntan Yangtze River Bridge

重庆寸滩长江大桥为主缆主跨跨度880 m,矢跨比1/8.8的双塔悬索桥,主缆采用预制平行钢丝索股。介绍该桥主缆施工技术,重点阐述该桥主缆施工过程中采取的猫道体系转换、小循环牵引系统、主缆索股牵引过程控制、基准索股线形控制等措施,上述措施使主缆施工得以顺利完成,且施工质量满足规范及设计要求。

Chongqing Cuntan Yangtze River Bridge is a double tower suspension bridge with the main span of 880 m,the span ratio of 1/8.8,the main cable using prefabricated parallel steel wire cable.This paper introduces the bridge main cable construction technology,focusing on the measures taken during construction of the main cable,such as the catwalk system conversion,small cycle traction system,the main cable traction process control,benchmark cable linearity control,etc.,the above measures enable successful completion of the main cable construction,and the construction quality meet the specifications and design requirements.