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通过比较某在建的大跨径钢桁梁悬索桥上2种柔性中央扣斜拉索梁端锚固方式,研究了锚箱式和耳板式柔性中央扣锚固系统的构造和设置方法,并运用大型有限元分析软件ANSYS进行了空间有限元分析,分析了锚固系统的传力途径及各板件的应力分布情况,分析结果表明柔性中央扣斜拉索耳板式锚固系统应力集中点较少且应力极值较小,相比锚箱式系统更适合在索力不太大又受结构安装空间限制的钢桁梁悬索桥上使用。该结论可为今后在同类大跨径钢桁梁悬索桥上选择合适的柔性中央扣斜拉索梁端锚固系统提供有意义的参考。
By comparing the anchorage methods of two kinds of flexible central buckle cable girders on a long span steel truss girder suspension bridge under construction, the construction and setting methods of anchor box and ear flexible central buckle anchorage system are studied, The finite element analysis of elemental analysis software ANSYS has been carried out to analyze the transmission force of anchorage system and the stress distribution of each plate. The analysis results show that the stress centralization point of flexible central cable stayed cable anchoring system is less and the stress extreme value Smaller, compared to the anchor box system is more suitable for use in the steel truss girder suspension bridge is not too large and structural installation space constraints. This conclusion can provide a meaningful reference for the future selection of appropriate flexible central buckle cable girder end anchorage system for similar long-span steel truss girder suspension bridge.