大跨径钢箱梁转体T构挠度与受力研究

Study on Deflection and Stress of Long-span Steel Box Girder Swivel T-frame Bridge

以太原市卧虎山路2-100 m钢箱梁转体T构桥为例,该桥转体时梁段悬臂长度大,导致梁端挠度和竖向变形调整幅度较大。不利于成桥线形的控制,受力性能复杂。设计及施工难度均较大。为揭示其挠度及受力特性,于文中展开详细的分析及探讨。

Taking a 2-100 m steel box girder swivel T-frame bridge in Wohushan Road of Taiyuan City as an example, the cantilever length of girder section of this bridge is long during its swiveling to result in the deflection at the girder end and the adjustment range of vertical deformation larger, which will be not conducive to control the bridge alignment. The stress performance is complex. The design and construction are more difficult. The detailed analysis and discussion are carried out in this paper in order to reveal its deflection and stress characteristic.