东海大桥近岛段工程预应力混凝土顶推连续梁的设计与施工  

Design and Construction of Incrementally Launched Prestressd Concrete Continuous Girders of Donghai Bridge Close to Island Side

作　　者：任明飞[1] 胡迎新[2] 郑机[3] 

机构地区：[1]中铁大桥局集团第二工程有限公司,江苏南京210015 [2]中南大学,湖南长沙410075 [3]中铁大桥局集团有限公司,湖北武汉430050

出　　处：《桥梁建设》2005年第B06期27-30,共4页Bridge Construction

摘　　要：东海大桥在大乌龟岛附近由于特殊的地理条件而采用预应力混凝土顶推连续梁结构,桥梁处于半径2500m的圆曲线上,顶推梁全长400m。介绍了该段工程施工工艺的设计以及在施工中为满足曲线顶推的要求所采取的一些特殊施工措施。Owing to the unusual geographic conditions nearby Dawugui Island, the incrementally launched prestressed concrete continuous girders are selected for use for the part of Donghai Bridge close to the Island. The part of the Bridge is laid on the circular curve in a radius of 2 500 m where the sub part of the Bridge constructed with the incremental launching method is 400 m in length. In this paper, the construction technology design for the part of the Bridge and some special measures adopted in order to meet the requirements for the incremental launching construction of the curved girders are presented.

关 键 词：曲梁 顶推法架桥 桥梁设计 桥梁施工 

分 类 号：U445.462[建筑科学—桥梁与隧道工程]