南宁永和大桥施工

Construction of Yonghe Bridge in Nanning

南宁永和大桥主桥为变桁高下承式钢管混凝土有推力无铰拱结构,其沉井结构大,拱肋跨度长、拱肋节段重,施工方法难。主要介绍该桥的关键施工工艺。

The main bridge of Yonghe Bridge in Nanning is a hingeless, thrust and through arch structure of concrete-filled steel tubes with variable truss height. The construction of the Bridge is quite challenging because of its large structural size open caisson, long-span arch rib and heavy arch rib segment. In this paper, the key construction technology for the Bridge is mainly dealt with.