波纹钢腹板斜拉桥剪力滞效应空间网格分析方法

Space mesh analysis method for shear lag effect of cable-stayed bridge with corrugated steel webs

将一种新的空间网格分析方法应用于六塔斜拉桥剪力滞效应分析中。详述了空间网格分析方法的原理及在波形钢腹板组合梁斜拉桥的建模参数,分析了边、中跨关键截面的剪力滞系数沿横向和纵向的分布规律,为同类型工程提供参考。实验验证了空间网格分析方法的有效性和准确性,为桥梁的精细化设计提供新的思路和方向。

A novel spatial grid model is proposed and applied to analyze the shear lag effect of six tower cable-stayed bridge.The theoretical principle of the proposed spatial grid model is elaborated along with the relevant illustrations of the modeling parameters of the composite box girder with corrugated steel webs.Then,the typical transverse and longitudinal shear lag coefficient distribution patterns at the key cross sections of side-span and mid-span are analyzed to provide reference for simple bridges.The effectiveness and accuracy of the proposed spatial grid analysis method is validated through cablestayed bridge.