西安市三环路系统工程灞河大桥关键技术及创新

摘要:

西安市三环路系统工程灞河大桥全长1.061km,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43881m2,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下承式钢管砼拱梁组合体系,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。

Abstract:

Xi"an Sanhuan Road Systems Engineering Ba River Bridge is 1.061 km long,It comprises the main road bridge of Ba River Bay Bridge, service road bridge of Ba River Bay Bridge and Kwong Wan Tam Service Road Bridge,The total area of the bridge is 43881M2,The total estimate is $219.7 million,Shaanxi Province is the largest municipal cross-river bridge project。The bridge is located above the Guangyuntan, a large-scale tourism development project in Xi"an,In “The first water city in the West”-Xi"an chan-ba ecological park across Ba River,The landscape is demanding。The general design makes use of the characteristics of the third ring road to set up the main and auxiliary roads,The design idea of “Same span and different elevation of Main Road Bridge and Auxiliary Road Bridge”is put forward innovatively,The main bridge of the main road bridge adopts (2×50 + 80 + 2×50) m through concrete filled steel tubular arch beam composite system,The main bridge of the Auxiliary Road Bridge Adopts (25+2×50 + 80 + 2×50+25) m continuous box girder,Well thought out,At the same time, it achieves good landscape effect while satisfying the traffic function requirement of the main and auxiliary roads,It can be used for reference for similar projects。