About the author:

1. CCCC Second Highway Engineering Co., Ltd., Xi’an, Shaanxi 710065, China;2. CCCC-SHEC East China Construction Co., Ltd., Nanjing, Jiangsu 211800, China

Abstract:

Ningyang Yangtze River Bridge is a two-tower single-span suspension bridge with a main spanof 1560m. The main cable strands are erected by parallel wire strand （ PPWS ） method, and thesuperstructure adopts a three-span continuous catwalk operation platform. In view of the characteristics ofthe bridge across the Yangtze River and the difficulty of the site layout of the hauling system on bothsides, the single-line reciprocating hauling system is adopted for the erection of the catwalk, and theclosed-loop hauling system is adopted for the erection of the main cable strands,which meet the erectionrequirements. Through engineering application, the closed cycle hauling system has five technicalcharacteristics of synchronization, stability, reliability, high efficiency and economy,which can providetechnical support for the rapid erection of main cable strands of super-long-span suspension bridges over2000m.