商合杭高铁芜湖长江公铁大桥总体施工方案  

Overall Construction Scheme for Wuhu Yangtze River Rail-cum-road Bridge of Shangqiu-Hefei-Hangzhou High Speed Railway

作　　者：刘幸福 王令侠[2] LIU Xingfu;WANG Lingxia(Project Management Department of Wuhu Yangtze River Rail-cum-road Bridge of Shangqiu-Hefei-Hangzhou High Speed Railway,China Railway Major Bridge Engineering Group Co Ltd,Wuhu Anhui 214001,China;China Railway Major Bridge Engineering Group Co Ltd,Wuhan Hubei 430050,China)

机构地区：[1]中铁大桥局商合杭铁路芜湖长江公铁大桥项目经理部,安徽芜湖214001 [2]中铁大桥局集团有限公司,湖北武汉430050

出　　处：《中国铁路》2020年第6期19-25,共7页China Railway

摘　　要：商合杭高铁芜湖长江公铁大桥采用铁路在下、公路在上的分层布置设计。跨江主桥为(99.3+238.0+588.0+224.0+85.3)m双塔双索面高低矮塔钢箱钢桁组合梁斜拉桥。引桥为左右分幅布置的预应力混凝土箱梁或钢箱梁桥。在分析工程特点的基础上,重点阐述施工总体方案及其创新实践,包括"栈桥+浮桥"的运输通道、因地制宜的多种平台与围堰施工、钢沉井精确设置施工、钢桁梁"分层变幅"法施工、门形桥塔塔梁索同步施工、混凝土简支梁"现浇+横移"施工、钢箱梁高支承纵移拼装等方面。The Wuhu Yangtze River Rail-cum-road Bridge of Shangqiu-Hefei-Hangzhou High Speed Railway is designed in the layered arrangement,i.e.the upper layer for railway traffic and the lower layer for highway traffic.The river crossing main bridge is designed as a(99.3+238.0+588.0+224.0+85.3)m cable-stayed bridge with two high and low towers,two cable planes and steel box-truss composite beam.The approach bridge is a prestressed concrete or steel box beam bridge arranged in left and right halves.The paper focuses on the general method statement and innovative practices on the basis of analysis on the engineering characteristics,including the transport access of"trestle bridge+floating bridge",construction of platforms and cofferdams in line with local conditions,construction of accurate arrangement of steel open caisson,construction of steel truss beam by the method of"shifting in two halves and in layers",construction of beam and cable of portal-type bridge tower at the same pace and construction of"cast-insitu+horizontal movement"of concrete simply-supported beam and assembly of steel box beam in high support and longitudinal movement manner.

关 键 词：商合杭高铁 公路铁路两用桥 芜湖长江公铁大桥 斜拉桥 施工技术 

分 类 号：U445[建筑科学—桥梁与隧道工程]