张家界澄潭大桥钢-混塔柱设计

Design of Steel-Concrete Pylon of Chengtan Bridge in Zhangjiajie

湖南省张家界澄潭大桥是国内跨径最大的钢-混组合塔的独塔斜拉桥,主跨为253 m,桥塔结构形式美观、设计新颖、受力复杂。为实现交通功能和桥梁景观的双重功能,巧妙构思主塔,拓展独塔斜拉桥的布置。通过优化索力减小索塔根部弯矩,利用钢锚箱锚固斜拉索,增强桥梁连接强度。

Chengtan Bridge is the largest single tower cable-stayed bridge with steel-concrete pylon in Zhangjiajie, Hunan, China. The main span of the bridge is 253 m with beautiful pylon structure shape, novel design & complicated stress. To realize the dual functions of traffic function & bridge landscape, the main tower is designed ingeniously,and the layout of single tower cable-stayed bridge is extended. By optimizing the cable force to reduce the bending moment of the pylons, anchoring cables with steel anchor boxes can enhance the connection strength of the bridge.