东海大桥70m连续箱梁合龙段施工与体系转换

Construction of Closure Segments and System Transformation for 70-m Span Continuous Box Girders of Donghai Bridge

东海大桥是我国在建的第一座跨海大桥,其远海段非通航区域采用了70m预应力混凝土箱形连续梁,对箱梁合龙段的施工与体系转换进行了总结,供同类型工程施工时参考。

Donghai Bridge is the first bridge now being built over sea in China. On the part of the Bridge over sea that is far from the coast and where navigation is not required, the 70-m span prestressed concrete continuous box girders are selected for use. In this paper, the construction of the closure segments and system transformation for the box girders is summarized, which is expected to serve as reference to the constrction of similar works.