Yunnan Geqiao Shuanghe Super Bridge
The Shuanghe Super Bridge is located in Jintang Town, Qiaojia County, Yunnan Province. It is the largest cable-stayed bridge with a hybrid tower–girder system in Yunnan and one of the key, control‑critical projects along the Geqiao Expressway. Following the opening of the Geqiao Expressway, the drive from Kunming to Qiaojia has been reduced from 4.5 hours to 2.5 hours.
The Shuanghe Super Bridge has a total length of 705.6 meters and is a steel–concrete composite girder cable-stayed bridge with a span arrangement of 208 m + 356 m + 140 m. The cable stays are available in six specifications—250-31, 250-37, 250-43, 250-55, 250-61, and 250-73—totaling 108 cables. A total of 821 tons of epoxy‑coated single‑strand steel strands were used, and 108 sets of externally mounted, permanent‑magnet‑controlled magnetorheological dampers were installed. Zhe’an was responsible for supplying the cable‑stay products and providing cable‑stay installation services for the Shuanghe Super Bridge.
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