城市跨铁路站场预应力砼箱梁+钢箱梁主要施工技术解析  

Analysis on Main Construction Techniques of Prestressed Concrete Box Girder and Steel Box Girder of Urban Cross Railway Station

作　　者：吴志勇 Zhiyong Wu(Shanxi Yuanfang Road and Bridge ( Group) Co., Ltd. Datong 037006 , China)

机构地区：[1]山西远方路桥(集团)有限责任公司

出　　处：《青海交通科技》2019年第1期116-119,共4页Qinghai Transportation Science and Technology

摘　　要：山西省大同市平城街西延跨铁路桥梁由于跨越地段地质情况复杂,主线引桥标准跨采用整体现浇预应力混凝土连续箱梁,跨现状地道时,考虑组合钢箱梁。工程全部箱梁均采用满布支架现浇施工。混凝土浇筑采用竖向分层、横向分段方法,有效避免混凝土收缩量过大,从而产生裂缝。预应力管道采用真空压浆技术保证了钢绞线张拉质量、施工质量。The west extension cross railway bridge of Pingcheng Street, Datong City, Shanxi Province is complicated due to the geoloaical conditions of tOe spanning sections, the main line approach badge adopts the overall cast - in - place prestressed concrete continuous box girdea, Considea the combination of stel box beems when crossing the current authentic. All the box girdea of the project are covered with cost - in - place constrnction. The concrete pouring adopts the erticol stratiOcation and the lateral segmentation method, which electively avoids the excessive shrinkage of the concrete, teereby generating cracks. The pro - stressed pipeline adopts vecuum grouting technolooy i ensure the tensile quality and construction quality of the stel strand.

关 键 词：现浇预应力混凝土连续箱梁 满布支架 真空压浆 裂缝控制 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]