|Shear lag effect analysis of bilateral box girder of long-span cable-stayed bridge
|中文关键词: 斜拉桥 双边箱梁；最大悬臂；剪力滞；正应力
|英文关键词: cable-stayed bridge bilateral box girder maximum cantilever shear lag normal stress
| In order to determine the effect of main loadings on the construction stage of the maximum cantilever on shear lag effect in bilateral box girder of concrete cable-stayed bridge with wide and thin wall, the shear lag effect of concrete bilateral box girder of a cable-stayed bridge under different loads of both independent action and composite actions with the finite element method was calculated and analyzed. The analysis showed that the shear lag effect of box girder was more obvious when it was closer to the tower under dead weight; In addition, the effect of the law of cable force on the shear lag effect of the main girder is similar to the weight of the girder; The shear lag effect of the whole bridge is not obvious under longitudinal pre-stress; the shear lag effect of bilateral box girder can be optimized by adjusting the longitudinal pre-stress and the cable force parameters.