新草滩渭河特大桥的桥型设计方案

Bridge Type Scheme of New Caotan Wei River Bridge

由于草滩渭河大桥已运营服务30余年,长期超负荷运转,其安全性和耐久性难以保证;西铜公路城市段拓宽改造完成后,在大桥上必将形成"瓶颈"路段,造成拥堵,制约通行能力;河段防洪和景观提升受到影响,不利于"大西安"建设,拆除重建势在必行等问题,对新建草滩渭河特大桥桥型方案进行研究,并结合地形、地质、水文和周边环境等,一共提出4种桥型方案进行比选。

After serving more than 30 years,the long-term overload operation has made Caotan Wei River Bridge difficult to guarantee its safety and durability.After the completion of the widening and reconstruction of the urban section of the Xi’an-Tongchuan Highway,a"bottleneck"section will be formed on the bridge,causing congestion and restricting the capacity of the traffic.Flood control and landscape improvement in river section are affected,which is not conducive to the construction of Greater Xi’an.The bridge type scheme of the new Caotan Wei River Bridge was studied,and four schemes were proposed by combining the topography,geology,hydrology and surrounding environment.