盾构隧道基础上修建三条平行隧道地铁车站的施工力学行为研究

Study on the mechanical behavior of a metro station with three parallel tubes

结合我国地铁区间单线盾构隧道直径 6m左右的实情 ,提出了在盾构隧道的基础上修建三条平行隧道岛式站台车站方案。对该车站结构的施工力学行为进行了二维有限元数值模拟分析 ,得出了车站主体结构在施作过程中的受力特征 ,并对其施工安全性作出了评价 ,最后提出了相应的设计和施工方面的建议。

Authors of the paper put forward a project of a metro station with three parallel tubes and an island type platform based on the shield tunnels with a diameter of about 6m for single line traffic. According to the numerical analysis by using two-dimensional FEM on the mechanical behavior of the station structure during construction, the stress characteristics of the main structure is revealed with the construction safety evaluated. Finally, some suggestions in the respect of design and construction are put forward. The results obtained can be referred to by the practical project design and construction in the future.