复杂环境大跨度下承式系杆拱桥设计与施工

Design and Construction of Large-span through Tied Arch Bridges in Complex Environments

摘要:

信义路跨机荷高速大桥建设条件复杂，控制因素多，结合桥位特点采用216 m下承式系杆拱桥，充分利用了桥位地形、地貌，与周边环境协调，造型美观，体现了力与美的完美结合；采用缆索吊装-斜拉扣挂法，先拱后梁施工，减小对机荷高速改扩建工程及既有交通的影响。对该桥的桥位特点、总体布置、主要构造、施工方法、受力特点等进行了详细论述，可为同类桥设计、施工提供参考。

Abstract:

The construction conditions of Xinyi Road Cross Jihe Expressway Bridge are complex and there are many control factors. Based on the characteristics of the bridge site, a 216 m through type tied arch bridge is adopted, which fully utilizes the terrain and topography of the bridge site, coordinates with the surrounding environment, and has a beautiful appearance, reflecting the perfect combination of strength and beauty; The cable hoisting inclined buckle hanging method is adopted to construct the arch first and then to carry out the beam, which reduces the impact on the renovation and expansion project of Jihe Expressway and the existing traffic. A detailed discussion was conducted on the characteristics of the bridge location, overall layout, main structure, construction methods, and stress characteristics, which can provide reference for the design and construction of similar bridges.