带外伸横梁的钢箱梁桥设计实践

Design Practice of Steel Box Beam Bridge with Overhanging Crossbeam

当高架桥受桥下河道、道路、地铁、地下管线等限制时,采用外伸横梁是一种有效的解决办法。结合凤凰山高架桥左主线第6联4×28.9 m带外伸横梁的钢箱梁桥,介绍了凤凰山高架桥的设计、计算及施工,并探讨了横梁高度的取值、施工过程中横梁的稳定措施,可为国内外类似桥梁的设计提供参考。

When a viaduct is limited by a river,road,metro and underground pipeline,the overhanging crossbeam is an effective solution for use.Combined with the 4×28.9 m steel box beam bridge with overhanging crossbeam of the sixth left main line of Fenghuangshan Viaduct,the design,calculation and construction of the bridge are introduced,and the value of crossbeam height and the stability measures of crossbeam during construction are discussed,which can provide the reference for the design of the similar bridges at home and abroad.