隰吉高速公路中大跨径连续桥梁施工技术要点  

Key Technical Points of Construction of Large Span Continuous Bridge in Xiji Expressway

作　　者：侯红珍 HOU Hongzhen(Shanxi Road and Bridge Eighth Engineering Co.,Ltd.,Yuncheng,Shanxi 044000,China)

机构地区：[1]山西路桥第八工程有限公司,山西运城044000

出　　处：《黑龙江交通科技》2025年第4期44-48,53,共6页Communications Science and Technology Heilongjiang

摘　　要：以山西省隰吉高速柏坡底1号大桥工程为例,分别从施工准备、支架施工、混凝土浇筑、预应力施工、挂篮悬臂施工、边跨现浇段施工等方面出发,探究大跨径连续桥梁的施工技术要点。研究表明施工准备阶段应做好技术交底、材料质控以及放线定位等关键要点;严格按照设计施工方案搭设支架;规范混凝土浇筑施工过程;按照桥梁结构和负载要求开展预应力智能张拉施工;科学运用菱形挂篮施工技术;协调悬臂浇筑与边跨现浇,完成合龙作业。经质量检验,该桥梁施工符合技术标准。Taking the Xiji Expressway Baipodi No.1 bridge project in Shanxi Province as a case study,respectively from the aspects of construction preparation,support construction,concrete pouring,prestressed construction,hanging basket cantilever construction,side span cast-in-place section construction,etc.,to explore the key points of construction technology of large span continuous bridge.The research shows that the key points such as technical disclosure,material quality control and pay-off positioning should be done well in the construction preparation stage.Erection of support in strict accordance with the design and construction scheme;Standardize the construction process of concrete pouring;According to the bridge structure and load requirements to carry out prestressed intelligent tension construction;Scientific use of diamond hanging basket construction technology;Coordinate cantilever casting and side span cast-in-place to complete the closing operation.The quality inspection shows that the bridge construction conforms to the technical standard.

关 键 词：大跨径连续桥梁 混凝土浇筑 预应力施工 悬臂挂篮 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]