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研究目的:通过对北京站无站台柱雨棚主体大跨度长悬挑桁架结构的设计研究,解决该项目实施过程中的关键问题,保证全国第一个无站台柱雨棚主体结构的安全可靠。研究方法:通过对项目进行综合分析,结合国内外本学科的研究结论,确定结构的多项计算参数。采用空间钢结构软件3D3S对结构进行计算和校核。研究结论:在北京站既有复杂站场条件和柱子截面尺寸受到限制、结构高度上下均受到制约的情况下,首次将雨棚柱设置在线路中间,采用双站台跨越大跨度及长悬挑结构等多项创新设计,实现了包括基本站台在内的所有站台无柱。该项研究解决了主体钢桁架在项目实施过程中的诸多难点,同时也表明大跨度钢结构适用于国内无柱雨棚建设。
Research purposes: Through the design and study of the long-span cantilevered truss structure without canopies in Beijing station, the key problems in the implementation of the project are solved and the main structure of the canopy-free canopy in China is guaranteed to be safe and reliable. Research Methods: Through a comprehensive analysis of the project, combined with domestic and foreign research conclusions of this discipline, to determine the structure of a number of calculation parameters. Using spatial steel structure software 3D3S to calculate and check the structure. Research conclusions: Under the condition that the existing complex station conditions and the cross-sectional dimensions of the columns in Beijing Railway Station are limited and the structural height is controlled both up and down, the canopy column is set in the middle of the line for the first time. The double-platform crossing span and long overhang structure And many other innovative design, including all the platforms, including the basic platform without columns. This study solves many difficulties of the main steel truss in the project implementation process, and also shows that the large-span steel structure is suitable for the construction of the domestic non-pillar canopy.