某高速公路上跨地铁车辆段出入线设计及施工方案比选

摘要

武汉某高速公路府河特大桥南引桥采用等高现浇预应力混凝土箱梁，下部结构为单排三柱式桩基础结构；其中在施工里程 K3＋191～K3＋221段上跨地铁2号线一期工程常青车辆段和金银潭站之间的出入线（双线）。受地铁运营线及附属设施影响，文中从施工工期、费用及对地铁运营线影响等方面对设计及施工方案进行比选，采用较为经济、合理的设计实施方案，既满足使用功能及施工工期要求，又减少了对地铁运营线的干扰，降低了安全风险。%A certain highway of Wuhan,the south approach bridge of Fuhe Super Large Bridge uses e-qual altitude cast-in-place prestressed concrete box girder,the substructure part of bridge uses the sin-gle row three-column pile foundation structure;on the mileage K3+191~K3+221,the bridge over-pass between the first-stage project Changqing section and Jinyintan section of metro line 2.By the in-fluence of metro line and auxiliary facilities,from the aspects of construction period,cost and impact on metro line,the design and construction scheme comparison and selection are introduced in this pa-per.Using more economic design and reasonable implementation scheme can not only meet the using function and the construction period,but also reduce the interference to the metro line and reduce the safety risk.