轨道交通“桥建合一”高架车站大悬臂独柱墩结构设计研究

贵阳市轨道交通1号线窦官高架车站为“桥建合一”结构体系,桥墩采用大悬臂盖梁独柱墩。两种不同的受力体系组合在一起。“桥建合一”高架车站受力复杂,对空间框架体系的收缩、徐变,以及温度力的影响进行分析,并对大悬臂预应力混凝土盖梁受力进行介绍。其设计方法和成果可为同类高架车站提供设计参考。

Study on Design of Long-cantilever Single-column Pier Structure of Rail Traffic "Bridge-Station Combined" Elevated Station

Douguan Elevated Station in Guiyang Rail Traffic Line 1 is a "bridge-station combined structure" system. Its pier is a long-cantilever bent cap single-column pier. Two different stress systems are combined together. The stress of "bridge-station combined" elevated station is complex. The influences of shrinkage, creep and temperature on the spatial framework system are analyzed, and the stress of long-cantilever pre-stressed concrete bent cap is introduced. The design methods and results can provide the reference for the design of the similar elevated stations.