85m主跨预应力混凝土连续刚构桥设计

摘要

简要对预应力混凝土连续刚构桥桥型和结构尺寸的选择、设计以及结构受力分析进行了介绍．大桥采用主跨为85m的预应力混凝土连续刚构桥，主梁采用单箱单室变截面箱型梁，配置三项预应力体系，下部结构采用矩形薄壁空心墩，钻孔桩基础．通过对该桥进行结构分析，桥梁各部分均满足规范要求，具有较：盱的安全性能．总结该桥的设计要点，为其他同类桥梁设计提供参考．%This paper briefly introduces the choice and design and force analysis of bridge type&structure size for the prestressed concrete continuous rigid frame bridge. This bridge has adopted the prestressed concrete continuous rigid frame bridge with main span of 85 m. A variable section box girder with single box and single chamber was adopted for the main girder of the main bridge with three - way prestresssing system, rectangular thin - walled hollow pier and bored pile foundation was adopted for substructure of the bridge. Each parts of this bridge meet standard re- quirements by analysing structure for the bridge, and the safety properties are better of this bridge. This paper sum- marizes main points of this bridge design for giving some reference to related technical personnel.