摘要
针对北京地铁四号线宣武门车站地质条件、周边环境复杂,周边构筑物、管线多,群洞数量多等特点,采用PBA洞桩法施工。阐述小导洞超前支护及土方开挖、边桩施工、过盖板河施工、减小群洞效应施工措施及监控量测成果等,有效控制地表沉降,保证周边建筑物及地下管线的安全。
According to conditions of Xuanwumen Station in Beijing Subway Line 4,such as complex geological and surrounding environment,large number of surrounding structures and pipelines,PBA method is adopted in the construction.Construction technologies of the project effectively control surface settlement and ensure safety of surrounding buildings and underground pipelines,which include advanced support of small pilot tunnel,soil excavation,side pile construction,crossing Gaiban River technology,measures for reducing multi-cavity effect and surveying effect.
出处
《施工技术》
CAS
北大核心
2009年第S1期57-60,共4页
Construction Technology
关键词
地铁车站
PBA工法
群洞效应
施工技术
subway station
PBA method
multi-cavity effect
construction technology
