一座空间倾斜拱塔斜拉桥设计

Design of a Spatial Inclined Arch Pylon Cable-stayed Bridge

桥梁作为河道沿岸生态廊道的重要节点工程,需与周边地理环境高度融合,同时突出桥梁自身地标性功能,因此桥梁美学成了现代桥梁设计的重要考虑因素。在桥址处地形地貌受限条件下,通过采用空间倾斜双肢圆型钢-混结构拱型桥塔、空间扇型斜拉索索面、局部增设钢构装饰格栅等措施设计了一座较为美观的拱塔索辅梁斜拉桥。有限元分析计算结果表明,该桥结构性能良好,各项受力指标均满足相关规范要求。

As an important node project of the ecological corridor along a river, a bridge needs to be highly integrated with the surrounding geographical environment, and at the same time highlight the landmark function of the bridge itself. Therefore, the bridge aesthetic design has become an important consideration for modern bridge design. Under the condition of limited terrain and topography at a bridge site, this paper designs a more beautiful arch-pylon cable-assisted beam cable-stayed bridge by the measures of spatial inclined double-legged circular steel-concrete structural arched pylon, spatial fan-shaped stayed cable plane and locally added steel frame decorative grating. The calculation results of the finite element analysis show that the bridge has the good structural performance, and all the stress indicators meet the requirements of the relevant specifications.