ABSTRACT
Zhangjiajie Grand Canyon Glass Bridge is a space cable plane ground anchored suspension bridge with a main span of 430 m, which is the highest and longest pedestrian landscape glass bridge in the world. Considering the topographic characteristics of the bridge site, the stiffening beam segments are hoisted and spliced by a cable crane. Both the construction site conditions and the transportation conditions are poor, the terrain elevation difference is large, and there are also other problems at the bridge site. In addition, it is clear that there are difficulties in project implementation and characteristics of the bridge structure. In view of the factors mentioned above, the cable crane of this project is designed as one main cable with a span of 60 + 440 + 60 m, which can meet the lifting requirements of the stiffening beam segments and reduce the occupation of the construction site. The main cable is anchored with ground anchors; the two towers are assembled with large standardized Bailey pieces, saving steel consumption, and shortening the construction period with fast assembly and disassembly; the wind cables are set on the towers to increase their wind resistance of them; two lifting cranes are erected on the main cable, and can be lifted independently. The spacing between the two lifting cranes is 5 m. The total lifting capacity is 60 t, which can meet the requirements of the lifting and also improve the flexibility and stability of the cable crane.
