Railway Prestressed Concrete Continuous Beam Pier Beam Bracket Construction And-by-hole Construction Method Of Critical Process

In recent years, the development of the rail communication construction and the city road infrastructure has made great impact on development of national economy, especially on communications and transportation, transptation travel, reinforcing the regions. At the same time, the structure type of railroad bridges and the construction technique level also immediately developed. Based on the study of inter-integrated double-lines continuous beam bridge (32 +48 +32m) in Taiyuan-Yinchuan Line as well as Yangjiaao continuous beam (6x32m composited beam) in Hefei-Wuchang Line, beam support pier construction and move-by-mold construction have been studied. Besides, construction technology and control method of prestressed concrete continuous beam has been studied.Its main tasks are the following:1. Based on temporary pier steel stent of continuous beam bridge in section of ZQ- I -1 in Taiyuan-Yinchuan Line, several crucial technologies for cast in site menthod has been discussed, including foundation treatment, scaffold erection, pre-loaded for stents, etc.2. Base on continuous beam bridge in section of ZQ- I -1 in Taiyuan-Yinchuan Line, several techonologies has been discussed, including the scaffolding construction process, the template construction technique, construction technology of reinforced concrete construction technology, construction technology of prestressing, grouting and tunnel construction.3. With the study of move moldbase method for YangJiaAao Bridge, the present paper described the factors which effect body linear beam. Moreover, the key point for move moldbase method has been analyzed.