深圳市215m网状吊杆拱桥总体设计

Overall Design of a Mesh Suspension Arch Bridge with the Span of 215 m in Shenzhen

新建大望桥采用主跨215 m网状吊杆拱桥跨越深圳水库,打造深圳市区跨度最大的地标性景观桥梁。通过技术措施使桥梁满足水源保护区边界限制和高标准护水要求,创新性地提出“R=3300 m大半径平曲线网状吊杆拱桥”设计方案,并形成完善的设计施工护水措施方案。桥梁因与环深圳水库空中慢行系统衔接,设置“桥上桥”,为国内创造该类桥型的先例。通过全桥有限元模型静力和动力分析,静、动力性能良好,双层慢行道舒适度满足要求。桥梁在水源保护区的建设案例具有示范性,可为类似工程提供参考。

The newly built Dawang Bridge uses the 215 m network suspension arch bridge to cross the Shenzhen Reservoir,creating the landmark landscape bridge with the largest span in Shenzhen urban area.Through technical measures,the bridge can meet the boundary limits of the water source protection area and the requirements of high standard water protection.The design scheme of R=3300 m large radius flat curve network suspension rod arch bridgeis innovatively proposed,and a perfect water protection measure scheme for design&construction is formed.The bridge connects with the air slow running system around Shenzhen Reservoir and sets a bridge on bridge,creating a precedent for this type of bridge in China.Through the static&dynamic analysis of the full bridge finite element model,the static&dynamic performance is good,and the comfort level of the double-layer motorway meets the requirements.The case of bridge construction in the water source protection area is demonstrative and can provide reference for similar projects.