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大跨度无站台柱雨棚设计是火车站建设的一个重点,它要求柱距大、跨度大.在各种大跨结构体系中如双层网架、柱面网壳、弦支网壳、张弦梁、实腹拱、拱形桁架、悬索、膜结构等,正交梁系结构由于其结构简洁、受力合理等优点而被广泛应用.论文对不同布索方式的正交梁系结构在车站雨棚中的应用进行了研究,探讨了不同布索方案对结构静、动力性能的影响,分析了结构的特征值屈曲和非线性屈曲,并采用弹性时程分析法比较了各方案抗震性能.研究结果表明合理的布索方案能有效改善正交梁系结构的承载力和抗震性能.
The design of long-span platformless canopy canopy is a key point in railway station construction, which requires large column spacing and large span, and in various long-span structural systems such as double-layer grids, cylindrical reticulated shells, , Real abdominal arch, arched truss, suspension cable, membrane structure and so on.The orthogonal beam structure is widely used because of its simple structure, reasonable force and so on.An orthogonal beam structure with different cable ways is applied in the station The research on the application of rainforest canopy is carried out. The influence of different cable schemes on the static and dynamic performance of the structure is discussed. The eigenvalue buckling and nonlinear buckling of the structure are analyzed. The seismic performance of each scheme is compared by elastic time history analysis. The results show that the rational Boussoubin scheme can effectively improve the bearing capacity and seismic performance of the orthogonal beam system.