邻近营运地铁线全套管施工桥桩技术探讨  

Discussion on the Construction Technology of Bridge Pile with Full Casing Pipe Adjacent to Operating Metro Line

作　　者：杨钦 YANG Qin(Nanjing Tongli Construction Group Co.,Ltd.,Nanjing 210046,China)

机构地区：[1]南京同力建设集团股份有限公司,南京210046

出　　处：《中小企业管理与科技》2020年第31期156-157,共2页Management & Technology of SME

摘　　要：龙津桥改建工程中,桥梁全长292m,分北引桥、主桥和南引桥,主桥采用56+80+56m三跨变截面预应力混凝土连续梁结构。新桥建设距离地铁S8线较近,最近距离为4.8m,此工程采用目前较为先进的成桩工法——全套管全回转工艺,顺利完成了较近间距的21根桥桩,且地铁监测报告显示施工过程中无一造成S8线隧道的任何干扰,区间隧道结构安全。In the reconstruction project of Longjin Bridge,the total length of the bridge is 292m,which is divided into north approach bridge,main bridge and south approach bridge.The main bridge adopts the structure of 56+80+56m three-span continuous variable cross-section pre-stressed concrete beam.The newly constructed bridge is close to Metro Line S8,with the nearest distance of 4.8m.The project adopts the relatively advanced pile forming process,that is,the full pipe and full rotation process.The project has successfully completed 21 bridge piles with close spacing,and the metro monitoring report shows that no bridge pile caused any interference to the tunnel of Line S8 during the construction process,and the tunnel structure in the section was safe.

关 键 词：地铁 全套管 桥桩施工 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]