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针对中等跨径钢管混凝土系杆拱人行桥结构特点以及繁忙航道对跨河结构物施工要求,借鉴传统无支架缆索吊装先拱后梁架设钢管拱桥的思路,湖州和孚人行桥结构设计采用钢管拱在岸上拼装成型,浮吊整体吊装,然后以钢管拱作为施工劲性骨架,通过吊杆悬挂系杆横梁节段,用临时索平衡拱脚水平推力的无支架安装方法,取得成功实践。
According to the structural characteristics of medium-span CFST tied arch bridges and the construction requirements of the riverway structures by heavy waterways, drawing on the traditional idea of using archless steel cables to hoist steel arch bridges with arch-girders, Huzhou and Fu-footbridge structures are designed with steel arch The shore assembly molding, floating crane as a whole hoisting, and then to steel arch as the construction of the skeleton, hanging rod through the boom beam section, with a temporary cable balance arch foot horizontal thrust bracketless installation, and achieved successful practice.