南疆铁路大桥病害梁更换方案研究  

Study on the Replacement Scheme of Damaged Beams of Nanjiang Railway Bridge

作　　者：赵平渊 韩荣华 ZHAO Pingyuan;HAN Ronghua(China Railway Liuyuan Group Co.,Ltd.Industrial and Economic Institute,Tianjin 300308,China)

机构地区：[1]中铁第六勘察设计院集团有限公司工经院,天津300308

出　　处：《国防交通工程与技术》2023年第4期77-80,共4页Traffic Engineering and Technology for National Defence

摘　　要：天津港南疆铁路大桥与海滨高速公路交叉处,由于该处梁体多次受到撞击而损伤,梁部强度和刚度已无法满足重载列车的通行要求,严重影响铁路运营安全,亟需更换。以此项目为依托,详细对比了RPC简支T梁、钢板梁和预应力混凝土箱梁三种方案,全面分析各方案的结构形式、施工方案、工程投资及优缺点,通过对比分析最终给出推荐方案,为同类桥梁更换项目开展提供一定借鉴。The beam body at the intersection of Tianjin Port Nanjiang railway bridge and Haibin Expressway was damaged due to repeated impacts.The strength and stiffness of the beam can no longer meet the requirements of heavy haul trains,which seriously affects the safety of railway operation and needs to be replaced urgently.Based on this project,this paper compares three schemes of RPC simply supported T-beam,steel plate beam and prestressed concrete box beam in detail,comprehensively analyzes the structural form,construction scheme,project investment,advantages and disadvantages of each scheme.Finally,the recommended scheme is given through comparison and analysis,which provides certain reference for similar bridge replacement projects.

关 键 词：病害梁 更换 RPC简支T梁 钢板梁 预应力混凝土箱梁 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]