WBA法施工端头厅地铁车站单层结构技术研究

Study on Using WBA Technology to Create a Single Layer Structure of a Terminal-hall Subway Station

以暗挖施工北京地铁14号线朝阳公园站端头厅为研究对象,通过对暗挖施工端头厅车站单层结构的多种技术进行分析和比选,结合各种施工技术特点,形成了墙、梁、拱支撑框架体系构成的单层四导洞WBA施工技术。本工程应用此方法施工,有效控制施工引起的沉降,结构安全、质量合格,大大提高了施工效率;同时避免了大部分管线的改移,节约了管线改移的成本,减少施工对环境的影响,为地铁车站端头厅暗挖施工以及类似工程施工提供了实践经验。

In this paper,the research object was based on the underground excavation of the terminal-hall of Chaoyang Park Station of Beijing Metro Line 14.Through the analysis and comparison on various construction methods for single layer structure of the terminal-hall station,and combined with the characteristics of various construction techniques,the WBA works of wall,beam and arch support frame system were formed.The method was applied to the construction of the engi-neering,which effectively controlled the settlement caused by the construction,ensured the safety of the structure and the quality within the acceptable range,therefore,the construction efficiency was greatly improved.Meanwhile,it could avoid the rebuilding of most pipelines,save the cost of pipeline reconstruction,and reduce the environmental impact of construc-tion,which would provide some practical experiences for underground construction of the terminal-hall subway station and similar engineering construction.