The longest box girder crossing in the world, the Shibanpo Bridge connects Chongqing’s Yuzhong and Nan’an Districts and dramatically improves traffic flow across the Yangtze River.
The new bridge runs parallel to the old bridge and is positioned 25 meters away from the older structure. The total length of the new 7-span box girder bridge is 1103.5 meters, with a main span that is 330 meters long and 19 meters wide.
To satisfy strict river navigation requirements and match the aesthetic view of the existing bridge the composite steel and concrete rigid frame structure provides a navigation clearance of 300 meters.
- The continuous box girder design was chosen for its aesthetic compatibility with the existing bridge.
- A special feature of the design is the incorporation of a 103-meter long steel box section at the midspan into the otherwise prestressed concrete box girder. This steel section significantly reduces the bending moment and shear of the structure, and makes the long-span structure technically and economically efficient.
- The 1,400-ton steel box section was fabricated in the city of Wuhan, approximately 1,000 kilometers downstream of Chongqing, and towed upstream by tug boats. Upon its arrival at the bridge site, it was turned 90 degrees by cables on both banks of the river and lifted successfully into place using strand jacks. The lift was accomplished in just one day, minimizing interference with river traffic and expediting the overall construction of the bridge.
- This was the first time a steel box-girder has been shipped as a floating structure on navigable channels over a long distance. When it reached its destination, the central steel box girder was successfully turned around, positioned and lifted out the Yangtze River.
TYLI, in conjunction with the Company’s office in Chongqing, provided complete design services for the Project.
- Zhan Tian You Award, 2009
Institute of Civil Engineering under the Ministry of Construction
- Honor Award, 2007
Consulting Engineers and Land Surveyors of California (CELSOC)