桁式钢管砼拱桥拱肋放样弧长计算探讨

Analyses on the lofting arc length in concrete-filled steel tubular(CFST) arch truss bridges

桁式钢管砼拱桥拱肋放样长度是目前施工中急需解决的问题 ,笔者分析了影响弧长变化的主要因素 ,给出了节段弧长变化的简化计算公式 。

It is the urgent problem for the lofting length of segmental arc in Truss CFST arch bridges to be solved.The paper analyses main factors affecting the variable of the arc.And deduces the calculation formula in the variable of segmental arc of the truss.The level influence is analysed owing to different arc length variables.