Description

China Railway No.9 Engineering Group's No.1 Mega Bridge of Yangzhou East Station East-North Connecting Line is located in Yangzhou, Jiangsu Province. It is a key control structure of the Yangzhou East Railway Station Hub for the Shanghai-Chongqing-Chengdu High-Speed Railway. Boyoun form travelers were deployed for the construction of multiple continuous beams on this project, including the (71+128+71)m, (60+100+60)m and (32+48+32)m spans. Among them, the 128m continuous beam is the primary controlling work of the whole line, with a total bridge length of 271.66 m and deck width of 7.3 m. Designed as a single-line cantilever continuous beam, it demands high construction standards and stringent precision control.

Yangzhou East Station East-North Connecting Line form traveler construction

The continuous beams adopt a single-box single-cell structure. The 100m main-span continuous beam has a small horizontal curve radius, so the form traveler design must take curve travelling into consideration.

Another challenge lies in pier table. Pier table is 12m long, yet the cast cantilever segment reaches 6m, pier table has limited available space with compact anchoring positions for the form traveler, resulting in a notable increase in local reaction force. Taking this condition into account, Boyoun carried out customized partial optimization on the form traveler to enhance its resistance against lateral overturning. The optimized design ensures controllable alignment, safety and stability during cantilever casting on curved sections and satisfies the high-precision requirements for curved girder cantilever construction.

The continuous beam crosses over Jiangguang Expressway and Wanfuzha Road. These busy arterial roads create a high-risk overhead construction scenario adjacent to existing traffic routes. To protect on-site workers as well as vehicles and pedestrians underneath, Boyoun equipped the form traveler with a fully enclosed protection system. Prefabricated galvanized steel wire mesh panels are fitted on the facade with flexible access hatches for easy assembly and disassembly. Full enclosure on the sides and bottom prevents falling debris, safeguarding both passing traffic below and construction crews on the traveler.

The form traveler is fitted with upper and lower access ladders plus maintenance platforms. The ladders and platforms travel integrally with the form traveler without separate disassembly and reassembly. Throughout cantilever segment casting, they provide workers with stable, continuous access and inspection space, improving high-altitude working conditions and boosting safety and construction efficiency for cantilever casting.

Yangzhou East Station East-North Connecting Line serve as the critical link to connect the Shanghai-Chongqing-Chengdu High-Speed Railway into Yangzhou East Railway Station. Upon completion, the project will greatly enhance the hub capacity of Yangzhou East Station and realize interconnection of multiple railway lines. It is of great significance for fast transportation links between Yangzhou and core cities such as Shanghai and Nanjing, and for building a modern comprehensive transportation system.

The form traveler cantilever casting works are progressing steadily on site. Moving forward, Shandong Boyoun Heavy Industry will maintain close collaboration with the China Railway No.9 Engineering Group project team, delivering full-cycle form traveler technical services and on-site support. We will ensure accurate closure of all continuous beam spans, help the East-North Connecting Line open to traffic on schedule, and contribute Boyoun’s equipment strength to national high-speed railway hub infrastructure.

Gallery