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The Longjiang River is the largest obstacle along a new spur expressway that will branch off from the G56 to the city of Tengchong in western Yunnan Province. To get across the 300 meter deep river gorge, the engineers have designed the longest span high bridge on earth with a tower to tower distance of 1,196 meters – nearly as long as the Golden Gate Bridge. Longjiang will surpass the distance of both Aizhai and Balinghe Bridges which previously held the long span record honors among the world’s highest bridges.
The Longjiang crossing will also be unique among China’s big mountain suspension bridges with a thin steel box girder deck that breaks away from the traditional truss deck used on earlier bridges like Siduhe, Balinghe, Lishuihe and Aizhai.
mageba took over the job of this exciting project with the development and supply of the joints with the highest movement capacity ever and the first new fuse element patented by mageba.
The movement of the joints is 1,920 mm and can provide +/–350 mm additional movement when the earthquake comes; this makes these joints the biggest movement capacity ever by mageba.
Due to difficult transport conditions the joints had to be pre-assembled in the factory, then disassembled for transport, and re-assembled on the bridge deck.
TENSA-MODULAR Type LR24
New fuse system
Teng Chong City
Yunnan Highway Development & Investment CO.,LTD
CCCC Second Highway Engineering CO.,LTD