新长铁路轮渡栈桥活动钢桁梁设计特色  

Design Features of Movable Steel Truss Girders for Trestle Bridge of Xinyi-Changxing Railway Ferry

作　　者：蔡云标[1] 陈勇[1] 

机构地区：[1]铁道第四勘察设计院,湖北武汉430063

出　　处：《桥梁建设》2006年第A02期115-118,共4页Bridge Construction

摘　　要：新长铁路以轮渡的方式跨越长江,为适应长江水位的涨落,铁路轮渡栈桥前5孔48 m钢桁梁必须具备上、下活动的功能。为满足活动的特殊功能和铁路行车平顺性的要求,该栈桥采取5孔钢桁梁首尾以铰轴相连、尽可能减小轨面至下弦中心的高差等诸多措施。新长轮渡已经投入运营3年多,实践证明设计的一系列措施安全、合理。The Xinyi-Changxing Railway stretches across the Changjiang River by ferry. To accommodate the rise and fall of water levels of the River, the front 5 spans of the 48-m span steel truss girders for the trestle bridge of the railway ferry must be able to move up and down, and to meet the requirements of special functions of the moving and evenness of train traveling, numerous measures, such as that the 5 spans of the girders are articulated at their front and rear ends, have been taken in the design in order to reduce as much as possible the height differences from the track top to the center of lower chords. More than three years＇ operation after the Railway was put in use indicates that a series of measures taken in the design of the truss girders of the bridge are safe and rational.

关 键 词：铁路轮渡 栈桥 钢桁梁 桥梁设计 

分 类 号：U448.18[建筑科学—桥梁与隧道工程] U443.35[交通运输工程—道路与铁道工程]