新增钢横梁法加固广州市番禺区某跨线桥  

THE REHABILITATION OF A VIADUCT IN PANYU DISTRICT OF GUANGZHOU CITY BY ADDITIONAL STEEL TRANSVERSE BEAM

作　　者：姜海波[1] 陈鹏[2] 何爱德[1] 余朝阳 黄飞新[1] 邹锦华[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广州510006 [2]暨南大学总务后勤管理处,广州510632 [3]广东省公路工程质量监测站,广州510500

出　　处：《工业建筑》2010年第10期19-22,共4页Industrial Construction

基　　金：广州市科技计划项目(2008J1-C201);广州市公路局科技项目(穗公研2008-3);广东省公路局科技项目(2004-5);广州市建设委员会科技项目(2004-8)联合资助

摘　　要：广州市番禺区某跨线桥箱梁出现较多裂缝。在现场踏勘及分析基础上,认为该桥的抗扭能力不足。分析对比新增预应力混凝土横梁、新增混凝土托梁及新增钢横梁3种方案的优缺点,综合考虑施工难易程度、加固效果、外观和造价等因素,最终采用新增钢横梁提高箱梁的抗扭能力。详细介绍该加固方法的构造细节,该桥加固后,外形美观,效果良好,可供类似工程加固提供参考与借鉴。The cracks on the box girder surface of a viaduct in Panyu District of Guangzhou City are found,whose reason has been inferred as the deficiency of torsion resistance.In this paper,three rehabilitation methods,additional prestressing concrete transverse beam,additional concrete joist beam and additional steel transverse beam,have been proposed,which advantages and disadvantages have been discussed and contrasted.At last the method of additional steel transverse beam is adopted to improved the torsion resistance,based on those facts of construction convenience,project cost,rehabilitation effectiveness and configuration.The details of rehabilitation design have been exhaustively illustrated.The rehabilitated bridge with beautiful appearance obtains good results.This case can be regarded as a valuable reference for seminar engineering design.

关 键 词：钢横梁 加固 连续箱梁桥 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]