先简支后连续桥梁施工技术及质量控制

Construction Technology of First Simply Supported Then Continuously Supported Bridge and the Quality Control

为充分发挥先简支后连续梁在现代桥梁工程中的作用,分析了其梁施工技术,即施工准备、安装临时支座、墩顶湿接头浇筑、建立二次预应力体系、结构体系转换及新老混凝土接触面处理等,提出了施工质量控制要点,要注重临时支座施工、混凝土浇筑质量的控制。

In order to fully play the function of modern bridge engineering of first simply supported then continuously supported bridge,the research analyzes the bridge construction technology,i.e.construction preparation,temporary support installation,pier top wet joint casting,the establishment of secondary prestressing force system,structural system transformation,and new and old concrete contact surface processing.Then the key points of construction quality control are proposed,i.e.to focus on the quality control of temporary support construction and concrete pouring.