剪力柔性梁格法在π梁斜拉桥中的应用研究

Application of shear-flexible grillage method in analysis for π-beam cable-stayed bridge structure

基于剪力柔性梁格法的基本原理,利用有限元软件Midas Civil对π梁斜拉桥的应力、位移等进行分析计算,并结合依托工程进行了荷载试验理论值与实测值对比分析,结果表明,在大跨度π梁斜拉桥中使用双纵梁模型的计算结果安全可靠,对于类似π梁斜拉桥结构的力学行为分析有一定的参考意义。

Based on the basic principle of the Shear-Flexible Grillage method,the stress and displacement ofπ-girder cablestayed bridge are analyzed and calculated by finite element software Midas Civil.The theoretical value and measured value of load test are compared in practical application cases,the results provides theoretical data support for long spanπbeam cablestayed bridgeswhichuse double longerbeam model.It provides a reference for the analysis of mechanical behavior of similarπbeam cable-stayed bridges.