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目前,在地铁车站结构设计中,一般采用将荷载满布到结构模型进行内力分析,并未考虑不同活载布置对结构内力的影响,从而导致部分截面设计存在安全隐患。文章以成都地铁3号线一期工程红牌楼南站结构模型为例,运用MIDASGEN有限元分析软件对不同活载布置下结构的内力进行比较,得出地铁车站各截面控制内力所对应的活载布置,为地铁车站结构设计提供借鉴。
At present, in the metro station structure design, the load is usually applied to the structural model for internal force analysis, and the influence of different live loads on the internal force of the structure is not taken into consideration. As a result, there is a potential safety hazard in some cross-section designs. Taking the structural model of Hongpailou South Station of Phase I of Chengdu Metro Line 3 as an example, the internal forces of structures under different live loads are compared by using MIDASGEN finite element analysis software, and the live load Layout, provide a reference for metro station structure design.