摘要
顶推施工是跨江、河施工的先进施工工艺,国内成功顶推施工最大跨度为168 m。结合黄大铁路黄河特大桥(120+4×180+120)m连续钢桁梁的顶推施工,对大跨度全悬臂顶推施工中的120 m导梁进行设计研讨与优化。解决了顶推施工中的大跨下挠、稳定、横向抗风等问题,为同类的施工导梁提供参考经验。
Incremental launching construction is an advanced construction technology for cross-river construction, the lar- gest span of China＇ s successful incremental launching construction is 168 m. Combined with the incremental launching construction of （120 ＋ 4 × 80 ＋ 120 m） continuous steel truss beam for extra-large bridge across the Yellow River in South Huangye-Dajiawa Railway, this paper made a design and optimization on 120 m large span guide beam during the construc- tion of full cantilever pushing. It solved the problems such as large span deflection, stability and transverse wind resistance in incremental launching construction, which could provide a reference for guide beam construction of similar projects.
作者
杨超
Yang Chao(China Railway 14^th Bureau Group 3^rd Engineering Co. Ltd. , Yanzhou Shandong 272100, China)
出处
《铁道建筑技术》
2016年第12期24-27,共4页
Railway Construction Technology
基金
山东省技术创新项目(201421901127)
关键词
大跨度
钢桁梁
顶推
全悬臂
导梁设计
large span
steel truss girder
incremental launching
full cantilever
design of guide beam
