上跨车站多股线路U形组合箱梁旧桥拆除技术  

Demolition construction technology of U-shaped composite box birder old bridge across multi-strand lines at station

作　　者：邱涟漪 白彦杰 何湘桂 麻时光 Qiu Lianyi;Bai Yanjie;He Xianggui;Ma Shiguang(China Railway 24th Bureau Group Nanchang Railway Engineering Co.,Ltd.,Nanchang Jiangxi 330002,China)

机构地区：[1]中铁二十四局集团南昌铁路工程有限公司,江西南昌330002

出　　处：《山西建筑》2023年第20期172-175,共4页Shanxi Architecture

摘　　要：上跨车站的旧桥改造工程,旧桥拆除施工技术直接影响着铁路运营的安全性。结合城市道路改扩建工程的U形组合箱梁桥拆除实例,应用了金刚石绳锯切割法与架桥机吊装拆除技术,解决了跨多股运营铁路作业时间和空间受限、施工安全保障难及路面交通疏解难等问题。同时,介绍了上跨车站U形组合箱梁桥、临近既有线高桥台拆除关键施工技术和安全保障措施,为同类跨线旧桥拆除提供借鉴。The demolition technology of the old bridge directly affect the safety of railway operation among the reconstruction project of the old bridge.According to the demolition example of U-shaped composite box girder bridge in urban road reconstruction and expansion project,this paper provides the diamond rope saw cutting method and the lifting and removing technology using bridge erecting machine to solve the problems such as the limiting time and space of cross-multi-line railway operation,the safety guarantee difficulty of construction and traffic reconciliation difficulty of road.At the same time,the key construction techniques and safety precautions of the demolition of U-shaped composite box girder bridge across station and high abutment adjacent to the existing line are introduced,which can provide experience for the demolition of similar cross-line old bridges.

关 键 词：旧桥拆除 U形组合箱梁 上跨车站 施工方案 

分 类 号：TU997[建筑科学—市政工程]