大跨度钢管混凝土窄拱桥的设计实践探索

以大连理工大学桥梁工程研究所近年来设计的钢管混凝土拱桥为工程背景,介绍了在大跨度窄桥设计、施工中所采用到的一些新的设计方法,对大跨度钢管混凝土窄拱桥的关键技术问题、尤其是拱桥稳定性问题进行了深入地研究分析,结论表明单片桁架式钢管混凝土拱桥在大跨度窄桥中应用是合理的,并且具有一定的优越性。

Long Span Concrete-filled Steel Tubular Narrow Arch Bridge Design

Based on the concretefilled steel tubular (CFST) arch bridges designed by Bridge Institute of Dalian University of Technology,some new technologies on design and construction were introduced in this paper. It is the first time that arch ribs of the plane truss type have been used in the longspan CFST bridges in China.The rationality of the design for this type of largespan,narrow bridge was discussed and justified based on the results of thorough investigation related to some key issues the stability in particular.The main features of this structure are beautiful in shape,convenient in construction and cost effective.