摘要
朱溪河右线大桥为(72+128+72)m三跨预应力混凝土连续刚构桥,梁部为单箱单室结构,主墩为变截面矩形空心墩,采用嵌固基础。主墩采用翻模法施工,并采取大体积混凝土防开裂施工措施;梁部施工采取在主墩墩顶托架上浇筑0号块,利用轻型挂篮从0号块向两侧对称悬臂浇筑各梁段,形成2个T构,同时在两侧桥台的支架上浇筑边跨现浇段,然后先中跨合龙,再边跨合龙形成连续刚构体系,其中预应力施工采用预应力管道真空辅助灌浆技术,施工过程中对主梁线形进行监控。
The Right Line Bridge of the Second Xiangfan-Chongqing Railway Crossing Zhuxi River is a three-span prestressed concrete continuous rigid-frame bridge with span arrangement(72+128+72) m.The main girder of the Bridge is a single cell single box structure and the piers supporting the girder are the rectangular ones with variable cross sections.The piers rest on the foundations socketed in the ground,are built by the turnover formwork and the anti-cracking construction measures for the massive concrete of the ...
出处
《世界桥梁》
北大核心
2010年第2期20-23,32,共5页
World Bridges
关键词
刚构桥
桥梁基础
挂篮
桥梁施工
rigid-frame bridge
bridge foundation
form traveler
bridge construction
