论文部分内容阅读
乌江大桥是世界上第一座由吊桥和斜拉桥组合而成的吊拉组合桥 ,也是国内首次采用钢筋、钢纤维、钢丝网复合混凝土薄壁箱梁 ,成功的使用了预应力岩锚代替传统的重力式锚 ,节省了大量锚碇混凝土。在施工工艺上首创了用缆吊平台“无猫道架设主缆新工艺”,完善了重 10 0 t箱梁缆吊悬拼等施工工艺。通过 3年运营证明 ,乌江大桥结构性能良好。文章主要介绍主塔、岩锚、箱梁预制吊装、无猫道主缆架设的施工工艺。
Wujiang Bridge is the first suspension combined bridge in the world composed of suspension bridge and cable-stayed bridge. It is also the first time to adopt the composite concrete thin-walled box girder with steel, steel fiber and steel mesh in China and successfully used the prestressed rock anchor instead The traditional gravity anchor, save a lot of anchor 碇 concrete. In the construction technology pioneered the use of cable hanging platform “no cats erection of the main cable new technology” to improve the heavy 10 0 t box girder hanging hanging spell construction technology. After 3 years operation certificate, Wujiang Bridge has good structural performance. The article mainly introduces the construction technology of main tower, rock anchor, box girder prefabricated and hoisting, no cat main cable erection.