丹河大桥组合梁斜拉桥的设计与创新

Design and Innovation of Composite Girder Cable-stayed Bridge for Danhe Bridge

摘要:

丹河大桥是国内某一级公路工程上跨丹河的一座特大桥，道路等级为一级公路，桥梁全长1 738 m，其中主桥结构形式为（130+130）m独塔组合梁斜拉桥，结构体系为半漂浮体系，采用支架拼装施工。现阐述该桥梁的结构设计、技术难点和创新点，为其他桥梁设计者提供该类型桥梁的设计建议。

Abstract:

Danhe Bidge is a super large bridge crossing Danhe River of a first-class highway project in China. Its road grade is the first-class highway. Its total length is 1 738 m, in which the structural form of the main bridge is the (130+130)-m single-pylon composite girder cable-stayed bridge. Its structural system is a semi-floating system, which is constructed by the bracket assembly. The structural design, technical difficulties and innovation points of this bridge are expounded, which provide the suggestions for the other bridge designers in the design of similar bridges.