顶板设出入口的地铁车站在核爆荷载下受力分析研究

An Analytical Study of the Subway Stations with Top Slab Inlet and Outlet Under the Load of Nuclear Explosion

介绍了地铁车站出入口从地铁顶板穿出地面的几种形式和应用情况,结合北京地铁某车站实例,在人防核爆内压荷载、经土层衰减后的人防外压荷载及结构正常荷载组合联合作用下,采用有限元软件对该类型车站的受力做了详细的计算和分析,并对设计中出现的难点进行了处理。取得了较好的效果,为类似工程设计提供了有益的借鉴。

With a certain subway station of the Beijing Subway as a practical example, several forms of the inlets and outlets of the subway stations going out of the top slab of the subway and their applications are presented in the paper, with great stress placed on the description of both the internal pressure loads and the external pressure loads resulting from nuclear explosion on the anti-air-raid works, as well as the normal loads exerted on them. With the help of the finite element analysis software, a detailed calculation and analysis are made of that type of stations, with possible solutions presented to the difficult problems in design. It may serve as a useful reference for other similar projects.