天水市藉口镇藉河大桥总体设计

Overall Design of Xi River Bridge in Xikou Town of Tianshui

摘要:

天水市藉口镇藉河大桥主桥采用独塔双索面斜拉桥，边跨45 m+84 m，主跨155 m，主塔采用钢筋混凝土钻石形塔，主梁采用预应力混凝土边纵梁，该桥采用塔、梁、墩固结体系，辅助墩及过渡墩处设置减隔震型抗震支座。阐述了该桥总体设计时在孔跨布置、主梁、主塔、斜拉索、基础等方面的尺寸确定。对高烈度地区独塔斜拉桥的设计提供了宝贵的工程经验。

Abstract:

The main bridge of Xi River Bridge in Xikou Town of Tianshui is a single-pylon double-plane cable-stayed bridge. Its side spans are 45 m+84 m, and its main span is 155 m. Its main pylon is a diamond-shaped reinforced concrete pylon. Its main beam is a prestressed concrete side longitudinal beam. The consolidation system of pylon, beam and pier is used for this bridge. The seismic isolation bearings are set up at the auxiliary pier and the transition pier. The size determination of span arrangement, main girder, main pylon, stayed cable and foundation is expounded in the overall design of the bridge. The valuable engineering experience for the design of single-pylon cable-stayed bridge in high intensity area is provided.