西安市三环路系统工程灞河大桥关键技术及创新  

Key Technology and Innovation of Ba River Bridge in Xian Ring III Road System Project

作　　者：张磊[1,2] 曾鹏 ZHANG Lei;ZENG Peng

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031 [2]中国华西工程设计建设有限公司,四川成都610015

出　　处：《城市道桥与防洪》2023年第3期61-64,93,M0008,共6页Urban Roads Bridges & Flood Control

摘　　要：西安市三环路系统工程灞河大桥全长1.061 km,包括灞河大桥主道桥、灞河大桥辅道桥及广运潭辅道桥三部分,桥梁总面积为43881 m^(2),概算总额2.197亿元,是陕西省最大的市政跨河桥梁工程。桥梁位于西安市大型旅游开发项目--广运潭之上,在“西部第一水城”--西安市浐灞生态园区内横跨灞河,景观要求很高。总体设计利用三环路设置主辅道的特点,创新性地提出了“主道桥和辅道桥相同跨径、不同高程”的设计思路,主道桥主桥采用(2×50+80+2×50)m下承式钢管混凝土拱梁组合体系,辅道桥主桥采用(25+2×50+80+2×50+25)m的连续箱梁,构思巧妙,在满足主辅道交通功能要求的同时达到了良好的景观效果,可为类似项目提供借鉴。The total length of Ba River Bridge in Xian Ring III Road System Project is 1.061 km,including the main road bridge of Ba River Bridge,the auxiliary road bridge of Ba River Bridge and the auxiliary road bridge of Guangyun Lake.The total area of the bridge is 43881 m^(2).The total estimate is RMB 219.7 million yuan.It is the largest municipal cross-river bridge project in Shaanxi Province.The bridge is located over Guangyun Lake,a large-scale tourism development project in Xian,and spans Ba River within"the first water city in the west"-Xian Chanba Ecological Park with the high landscape requirements.The characteristics of Ring III Road to set up the main and auxiliary roads are used in the overall design,and the design idea of the"same span and different elevation of main road bridge and auxiliary road bridge"is put forward innovatively.The composite system of(2×50+80+2×50)m through concrete filled steel tubular arch beam is adopted for the main bridge of the main road bridge,and the(25+2×50+80+2×50+25)m continuous box beams are used for the main bridge of the auxiliary road bridge,which are the ingenious conceptions.The good landscape effect is achieved while satisfying the traffic functional requirements of the main and auxiliary roads,which can be referred for the similar projects.

关 键 词：灞河大桥 主道桥 辅道桥 下承式钢管混凝土拱梁组合 连续箱梁 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]