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中文摘要：
目前我国对明挖地铁车站进行结构设计多按照相关规范要求采用简化的平面模型进行结构分析。然而,地铁车站是沿纵向有一定变化的空间结构,按规范进行平面简化设计必然会引起一些计算偏差。文章通过对不同跨度的空间模型与相应的平面模型进行数值模拟计算分析,认为应采用空间结构计算所得等效弯矩来指导配筋计算。如果采用平面简化模型进行结构设计,则应该对结果进行一定的折减,尤其在结构相互垂直连接处应加大削峰幅度以确保地铁车站的经济性。
英文摘要：
As for the current structural design of open-cut subway stations in China, the simplified planar model is generally used to carry out structural analyses in accordance with the relevant specification requirements. Nev- ertheless, subway stations are spatial structures with changes in the longitudinal direction, and using the simpli- fied plane design according to current specifications is bound to cause calculation deviations. This paper proposes that the reinforcement calculation shall be guided by the calculated equivalent bending moment of the spatial structure based on a comparative analysis of numerical simulation calculations by spatial models with different spans and corresponding planar models. If a simplified planar model is used for structural design, the results shall be discounted; especially for the perpendicular joints, the range of peak clipping shall be increased to ensure the cost effectiveness of the subway stations.
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