论文部分内容阅读
贵阳北站是我国西南地区最大规模的综合性铁路交通枢纽,由站房、站台雨棚、高架车道等组成。站房采用桥建合一结构。站台层承载列车轨道的承轨结构、高架候车层框架标准跨度为21m×24m,商业夹层与高架候车层柱网上下不对齐。出站通道层下方有地铁穿过,在隧道上方的柱通过基础梁托换。站台层承轨结构采用变宽度预应力混凝土框架梁承重。高架候车层采用大跨度预应力混凝土梁,钢管混凝土柱预应力混凝土梁节点是保证结构承载力和抗震性能的关键。东西两端高架车道上方设置31m跨的钢桁架,承受冷却塔等设备荷载,支承钢桁架的框架柱采用钢骨混凝土柱。屋盖典型跨度42m×66m,采用网架与管桁架相结合的结构形式。为了发挥钢管混凝土柱上段的强度、减小层间位移,支承屋盖的钢管混凝土柱顶端与屋盖结构上下弦均连接。
Guiyang North Railway Station is the largest comprehensive railway transportation hub in southwest China. It consists of station houses, platform canopy, elevated lanes and so on. Station building using the bridge to build a structure. The platform track carries the track structure of the train track. The standard span of the elevated waiting frame is 21m × 24m, and the commercial mezzanine is not aligned with the overhead waiting column. There is a subway passing below the level of the outbound corridor, and the column above the tunnel is underpinned by the foundation beam. The platform bearing structure of the platform is made of variable width prestressed concrete frame beam. The use of long-span prestressed concrete beams for the elevated waiting car and the CFST prestressed concrete beam joints are the keys to ensure the bearing capacity and seismic performance of the structure. East and west overhead driveway set 31m above the steel truss, cooling towers and other equipment to withstand the load, the steel truss frame column with steel-concrete columns. Roof typical span 42m × 66m, the use of grid and pipe truss combination of structural forms. In order to exert the strength of the upper section of concrete filled steel tubular column and reduce the interlayer displacement, the top of the concrete-filled steel tubular column supporting the roof is connected with the upper and lower chords of the roof structure.