沈阳地铁一号线青年大街站3号风道由PBA工法变更为CRD工法浅析

Simple Analysis on Technological Method Change from PBA to CRD Used in No.3 Ventilation Passage of Metro

沈阳地铁一号线青年大街站为目前在建的国内最大的全暗挖车站,工期十分紧迫。结合工程实践,对3号风道由PBA工法变更为CRD工法进行了论述,实践证明,按CRD工法施工,开挖初支提前完成,且不增加工程投资,总体经济效益、社会效益明显,对其它地铁工程施工具有一定的借鉴意义。

Qingnianda street station of Shenyang no.1 metro line is the biggest domestic station where Subsurface Excavation is wholly applied.And its construction period is very urgent.according to the project practice,technological method Change from PBA to CRD used in No.3 ventilation passage of metro is discussed.The practice proves that the CRD technological method construction can make the initial Excavation support finished in advance,not increase project investment and increase whole economic and social benefits significantly.So it has some reference significance for other metro project construction.