明挖无柱地铁车站底板结构优化设计研究

Study on Optimum Design of Floor Structure of Open-cut and Column-free Subway Station

为研究明挖无柱地铁车站底板结构形式,依托郑州某地铁车站,该站为地下2层11m岛式站台车站,地层以黏性土及砂质土为主,通过对多种底板结构形式进行内力计算分析,并对各方案进行造价、工期、施工难度等综合比选,确定了较为合理的底板结构形式。

In order to study the structure type of the floor of a open-cut and column-free subway station, this paper relies on a subway station in Zhengzhou, which is an 11 m island-type platform station with two underground floors. The ground layer is mainly composed of cohesive and sandy soil. Through internal force calculation and analysis, and comprehensive selection of cost, construction period, construction difficulty and so on for every scheme,a more reasonable type of floor structure is determined.