昨日，在浙江省省会杭州发生正在施工过程中的地铁隧道上的路面塌陷事故，已经造成至少1人死亡18人失踪。
AT least one person is dead and 18 are missing after a road caved in on a subway tunnel under construction in the eastern Chinese city of Hangzhou yesterday.
在地铁车站盖挖法施工中，临时路面体系和中间立柱是结构竖向承载的主要构件。
During the covered excavation of metro station, the temporary pavement system and the columns are the main components for bearing the vertical load.
目前，我国地铁车站设计中普遍采用的一次加载的计算模式，也没有考虑盖挖施工临时路面体系传递的竖向荷载。
Presently, the complete loading calculation mode is widely used as the design method of the metro station, but the vertical load from the temporary road surface system isn't taken into account.
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