12 m宽站台明挖无柱地铁车站结构研究

Study on structure of open cut station of 12m wide platform without columns

为实现超大跨度明挖地铁车站结构,对4种结构方案进行了计算分析,并根据计算结果提出用拱+拉杆的结构解决顶、底板大跨度问题;通过改造轨顶风道为三角形,利用风道板作为支撑减小中板跨度,通过局部加腋和配筋实现中板大跨度。

In order to realize the super long span open cut underground station structure, this paper calculates and analyzes 4 structural schemes. Based on the calculation results, it suggests that the structure of arch and tie bar is to be used to solve the problem of long span of roof and fl oor. By changing the top ventilation duct above the track into a triangle form, the span of the middle plate is reduced by using the wind duct plate as a support, and the long span of the middle plate is achieved by partial reinforcement.