商合杭高铁钢-混凝土连续结合梁设计  

Design of Continuous Steel-concrete Composite Girder of Shangqiu-Hefei-Hangzhou High Speed Railway

作　　者：杨欣然 左家强 万明 YANG Xinran;ZUO Jiaqiang;WAN Ming(China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308

出　　处：《中国铁路》2020年第6期82-87,共6页China Railway

摘　　要：商合杭高铁跨越茨谷河采用5×50 m钢-混凝土连续结合梁,该型梁应用于时速350 km高速铁路无砟轨道属我国首次。在静力计算方面,主要对活载动力系数、计算模型及内力放大系数、混凝土桥面板及钢梁有效宽度、负弯矩区处理等进行分析;在动力性能方面,通过对车桥耦合动力仿真各项指标进行把控,保证了5×50 m钢-混凝土连续结合梁具有良好的静动力性能,可为类似结构提供参考借鉴。5×50 m continuous steel-concrete composite girder is adopted for the Shangqiu-Hefei-Hangzhou High Speed Railway crossing the Cigu River.This is the first time for this type of girder applied to the ballastless track of 350 km/h high speed railway in China.In respect of static calculation,the dynamic coefficient of live load,calculation model and internal force amplification coefficient,effective width of concrete bridge deck and steel girder and treatment of negative moment zone were mainly analyzed;in respect of dynamic performance,the indexes for simulating vehicle-bridge coupling dynamics were verified to ensure the good static and dynamic performance of the 5×50 m continuous steel-concrete composite girder as a reference for similar structures in the future.

关 键 词：商合杭高铁 高速铁路 古城特大桥 钢-混凝土连续结合梁 

分 类 号：U442[建筑科学—桥梁与隧道工程]