摘要
受限于周边场地条件,某地铁车站下穿既有城市隧道设置。车站采取了平顶密贴既有隧道底板的结构方案;同时,采用PBA工法施工地铁车站,先后借助车站主体结构上导洞、车站桩柱体系,与四周土体共同作为既有隧道的临时支撑体系,保证地铁施工和运营期间既有隧道的正常运营使用。
Limited by the surrounding site condition, a metro station is located under an existing city tunnel. To support the above tunnel structure, the flat roof of the station is in tight contact with the tunnel floor. Otherwise the station is constructed by pile-beam-arch method, and during the construction procedure of the station, upper pilot heading, pile and column serve as temporary support components successively to keep the city tunnel in normal condition.
出处
《工程建设与设计》
2016年第6期38-41,44,共5页
Construction & Design for Engineering
关键词
地铁
PBA工法
下穿建筑物
metro
pile-beam-arch method
cross underneath structure
