广州从化大桥工程主桥空间拱梁组合桥结构设计及关键技术

Design and Key Technology of Main bridge for Conghua Bridge of Guangzhou

广州从化大桥为广州市从化区跨流溪河的一座大型城市桥梁,其主桥为单跨下承式空间拱梁组合体系桥,跨径为136 m,桥宽40 m,拱圈为3根钢管通过横撑、斜撑组合而成倒三角形桁梁组合拱,造型独特,结构设计新颖,且为国内首例大桥与地铁共线的工程,技术含量高。介绍该桥的结构设计及关键技术。

Conghua Bridge of Guangzhou is a large urban bridge crossing Liuxi River for Conghua District of Guangzhou. Its main bridge is a single-span through spacial arch beam combined system bridge. Its span is 136 m and the bridge width is 40 m. The arch ring is composed of inverted triangle truss beam combined arch formed by three steel tubes going through the cross bracing and inclined bracing. Its modeling is special and its structural design is novel. It is the first collinear project of bridge and metro in China with the high technical content. The article introduces the structural design and key technology of this bridge.