大跨度钢桁-混凝土结合拱桥拱脚精定位安装施工技术  

Pinpoint Installation Technology of Skewback for Large Span Steel Truss Concrete Combined Arch Bridge

作　　者：李继有 

机构地区：[1]中铁大桥局集团第五工程有限公司,九江332001

出　　处：《交通科技》2016年第2期24-27,共4页Transportation Science & Technology

摘　　要：结合成贵铁路贵州鸭池河特大桥施工实例,介绍大跨度钢桁-混凝土结合拱桥拱脚精定位施工技术。介绍了拱脚定位支架的设计及计算分析,拱肋钢结构锚栓与首节段拱肋钢结构整体定位预埋的施工方法、工艺流程和注意事项,确保了拱脚整体施工质量。Combined with the construction example of Yachihe super large bridge on Chengdu-Guiyang railway,the pinpoint installation technologies of skewback for large span steel truss concrete combined arch bridge were introduced.The design and calculation analysis of localizing support of skewback were described in detail,and the key construction technologies of construction method,technological process and precaution for the steel structure anchor bolts of arch ribs and the global positioning and pre-burying of steel structure of the first segment arch rib were introduced dentally.The whole construction quality of the skewback is ensured,and the related technologies can be used for reference for other similar projects.

关 键 词：大跨度 拱桥 拱脚 精定位 施工技术 

分 类 号：U671.911[交通运输工程—船舶及航道工程]