铁道标准设计2024，Vol.68Issue(3)：1-7,55,8.DOI:10.13238/j.issn.1004-2954.202312290001
墩顶转体法施工的大跨度曲线钢桁梁桥总体设计及创新
Overall Design and Innovation of Large-span Curved Steel Truss Bridges Constructed Using Pier Top Rotation Method
摘要
Abstract
Anjiazhuang super major bridge on the national highway 109 new line expressway is a control engineering for the entire project.The left and right main bridges are located on circular curves with radii of 1 600 m and 1 500 m respectively,crossing the Fengtai-Shacheng railway,Yongding River and the current National Highway 109,with high requirements for bridge construction safety,flood control and environmental protection.To solve the problems of using rotation method for construction across railways and the high water blocking ratio of piers,innovatively proposed design schemes for large-span curved steel truss bridges constructed using pier top rotation method and large-diameter thick walled concrete-filled steel tubular piers.The left and right main bridges adopt(248.95+248.95)m steel truss cable-stayed bridge and(171.95+171+75.25)m continuous steel truss bridge,with rotation lengths of(248+248)m and(171+171)m respectively,piers in the river adopt concrete-filled steel tubular piers.Based on the relevant engineering construction conditions at the bridge site,the paper analyzes the selection criteria for the arrangement of main bridge span,bridge types and pier structures in the river,and briefly introduces the design content of the main bridge superstructure,substructure and foundation,rotation system,etc.The bridge breaks through the technical bottleneck that.steel truss bridges are not suitable for pier top rotation construction,and expands the scope of application of continuous steel truss bridges and pier top rotation method construction technology;The use of large-diameter thick walled concrete-filled steel tubular piers effectively reduces the cross-sectional size of piers and expands the application range of concrete-filled steel tubular structures;The construction and stress characteristics of large-span curved steel truss bridges are relatively complex,by using BIM forward design technology,precise expression of complex structural information and design intent is achieved,improving design efficiency.关键词
高速公路/公路桥/曲线桥/钢桁斜拉桥/连续钢桁梁/墩顶转体法/钢管混凝土桥墩/BIM正向设计/总体设计Key words
expressway/highway bridge/curved bridge/steel truss cable-stayed bridge/continuous steel truss/pier top rotation method/concrete-filled steel tubular pier/BIM forward design/overall de-sign分类
交通工程引用本文复制引用
李艳明,徐升桥,彭岚平,李辉..墩顶转体法施工的大跨度曲线钢桁梁桥总体设计及创新[J].铁道标准设计,2024,68(3):1-7,55,8.基金项目
中铁工程设计咨询集团有限公司科研课题(研2022-19) （研2022-19）
