大跨度部分斜拉桥上部结构施工技术

Super Structure Construction Techniques for Large-Span Partially Cable-Stayed Bridge

荷麻溪特大桥主梁特大型0号块采用贝雷架作支架、水平分三层浇筑等施工技术,采用超宽三角斜拉式后支点挂篮现浇部分斜拉桥大型箱梁施工技术,以及斜拉索采用环氧涂层钢绞线成品索,工厂加工成品,现场整束安装整束悬浮式张拉技术。

Hemaxi Extra-Large Bridge is a prestress concrete partially cable-stayed bridge with the longest span in our country. The keys and difficulties of super structure construction are ： （ 1 ） oversized 0# piece of the main beam adopting the construction techniques of Bailey frame being the bracket, three-layer placement ; （2） adopting the partially cable-stayed bridges＇ large box beam of super-wide triangle oblique-pulling back supporting point hanging basket to cast-in-situ. （3） adopting epoxy resin coated steel strand finished product cable. The cable was made in workshop, installed and suspension tensioned on site.