故道河碗凹式网壳钢拱桥设计

Design of Gudao River Bowl-Concave-Shaped Reticulated Shell Steel Arch Bridge

故道河三桥位于中新天津生态城,跨径200 m。为实现与周边环境协调统一,通过结构创新,设计为碗凹式网壳钢拱桥。该桥分幅设计,单幅桥面为单室钢箱梁,支撑结构由形成曲拱面的纵向钢构件与横向钢构件焊接形成网壳体。对全桥进行静力分析,结果表明桥梁结构受力均满足规范要求。为今后类似景观要求较高的桥梁工程提供参考。

The third bridge of Gudao River is located in the Sino-Singapore Tianjin Eco-city,with the span of 200 m.To achieve coordination and unification with the surroundings,through the structure innovation,the bridge is designed as a bowl-concave-shaped reticulated shell steel arch bridge.The bridge is divided into two pieces,the single deck being single room steel box girder,its support structure is welded into reticulated shell body by curved arch made of longitudinal& horizontal steel members.The results of the static analysis of the whole bridge show that the bridge structure can satisfy the requirements of specification,which may provide references for similar bridge engineering with high landscape demand in the future.