中承式钢筋混凝土箱形系杆拱桥施工技术

A Brief Account of the Construction Technology of the Half- through RC Tied-arch Bridge with Box-shaped Arch Ribs

安徽省岳西县南园大桥为一座中承式钢筋混凝土箱形截面系杆拱桥 ,主跨计算跨径88m ,计算矢高 2 5m ,矢跨比 1/3.52。主拱肋分五段预制及吊装 ,最大构件重 10 0t ,采用单台龙门吊机起重作业。介绍主拱桥施工组织方案及吊装构件的工艺 ,可供类似工程施工参考。

Yuexi Nanyuan Bridge in Yuexi prefecture Anhui province is a half-through reinforced concrete tied-arch bridge with box-shaped arch ribs. The designed span length is 88 m with a rise of 25 m, the ratio of rise to span length is 1/3.52. The main arch rib is divided into 5 segments. These segments are precast and lifted to erection with a portal-crane. The construction orgnization and the technology of erection of the main arch are presented.