在线路曲线半径较小时,通常选择跨载能力强的钢箱梁,其结构自重轻,在实际布置时避免支座受力过小,出现支座脱空;在满足安全的前提下,适当增大梁高,减小挠度及顶、底板应力。通过对昆明南二环的小半径钢箱梁的设计进行分析总结,供同类型连续钢箱梁的设计提供借鉴和参考。 When the radius of the curve of the line is small, the steel box girder with strong cross-loading capability is usually chosen. The structure of the box girder is light with its own weight. When the actual arrangement of the steel box girder is too small, the bearing is not forced to be too small and the bearing is vacated. When the safety is satisfied, High girder to reduce the deflection and top, floor stress. Through the analysis of the design of the small radius steel box girder in the second ring of Kunming, it provides a reference for the design of the same type of continuous steel box girder.