拱盖法施工技术在城市轨道交通大跨度车站的应用研究

Research on application of arch coverconstruction technology in long span station ofurban rail transit

为满足城市轨道交通客流量日益增长的需求,特大断面车站因其跨度大、占地少等优点得到广泛应用。因此,在具有特殊岩土组合性质地层的城市,具有更安全、更高效等优点的施工工艺才是特大断面车站的研究方向。文章对城市轨道交通大跨度车站上部拱盖法施工进行论述,着重对开挖过程中的难点及控制重点进行分析,在开挖过程中使用现场监控量测数据指导施工,并对施工过程进行动态风险综合分析。

In order to meet the increasing demand of urban rail transit passenger flow,extra-large crosssection station has been widely used because of its advantages of long span and less land use.Therefore,in the city with special geotechnical composite,the construction technology with more safety and efficiency is the research direction of super large profile station.This paper studies the construction method of arch cover method used in the upper part of long span station of urban rail transit,focuses on the analysis of difficulties and control points in the excavation process,and uses the field monitoring measurement data to guide the construction,and carries out a comprehensive dynamic risk analysis of the construction process.