跨既有交通线的分体多腔室钢箱梁桥顶推施工技术  

Top push construction technology for split multi chamber steel box girder bridges crossing existing traffic lines

作　　者：吴晓宇 蒋永扬 丁凤娟 周徐林 Wu Xiaoyu;Jiang Yongyang;Ding Fengjuan;Zhou Xulin(Zhongnan Green Construction,Hangzhou Zhejiang 310051,China)

机构地区：[1]浙江中南绿建科技集团有限公司,浙江杭州310051

出　　处：《山西建筑》2024年第19期159-161,166,共4页Shanxi Architecture

摘　　要：以廊坊临空经济区临空路(万兴道—广兴道)工程项目环首都分离立交桥第6联建设工程为背景,阐述了跨既有交通线的分体多腔室钢箱梁桥顶推施工技术。该项施工技术能够解决传统顶推施工用导梁多为定性产品,安拆过程施工效率低的问题。同时,针对顶推用临时支撑所含垫块安拆不变、支撑高度不精准、顶推过程线形控制难度大等问题,提出来一种详细的解决方案。This article takes the construction project of the 6th section of the Huan Capital Separation Overpass in the Langfang Lingkong Economic Zone Lingkong Road(Wanxing Road Guangxing Road)as the background,and elaborates on the top push construction technology of the split multi chamber steel box girder bridge crossing existing traffic lines.This construction technology can solve the problem of traditional top push construction using guide beams that are mostly qualitative products and have low construction efficiency during the installation and dismantling process.At the same time,a detailed solution is proposed to address issues such as unchanged installation and removal of cushion blocks,inaccurate support height,and difficulty in controlling the linear shape during the top pushing process.

关 键 词：跨既有交通线 顶推施工 导梁 临时支撑 限位 

分 类 号：TU997[建筑科学—市政工程]