北京某暗挖地铁车站及竖井横通道施工对邻近既有运营车站的影响研究

Study on the Influence of the Construction of a Subway Station and Vertical Shaft Cross Passage on the Adjacent Existing Stations in Beijing

为研究北京某暗挖地铁车站及竖井横通道施工对邻近既有运营车站的影响,以邻近既有15号线六道口站的新建六道口站4号竖井横通道及车站主体结构工程为背景,对六道口站4号竖井横通道及车站主体结构工程施工进行设计,并用MIDAS/GTS有限元软件对邻近既有15号线六道口站的新建六道口站4号竖井横通道及车站主体结构施工过程进行了有限元分析。研究了竖井横通道及车站主体结构施工过程中既有地铁车站主体结构、C出入口、D出入口位移以及既有地铁车站主体结构应力变化特征;总结了竖井横通道及车站主体结构施工过程中既有地铁车站主体结构间、主体结构与附属结构间变形缝差异沉降变化规律;揭示了竖井横通道及车站主体结构施工过程中既有地铁车站左右线轨道竖向沉降曲线走势特征,提出了本工程施工变形控制指标值。

In order to study the influence of the construction of underground excavation subway station and vertical shaft horizontal passage on the adjacent existing operating stations in Beijing,the background is taken as the horizontal passage of the newly built No.4 vertical shaft and the main structure project of the station near the existing line 15 Liudaokou station The design for the construction of the No.4 vertical shaft horizontal passage and the main structure of the station in Liudaokou station is carried out MIDAS/GTS finite element software is used to analyze the construction process of the cross passage of shaft No.4 and the main structure of the new Liudaokou station near the existing Liudaokou station of line 15.The displacement of the main structure of the existing metro station,c entrance,d entrance and d exit as well as the stress variation of the main structure of the existing metro station are studied during the construction of the shaft and the main structure of the station The differential and between main structure and subsidiary structure of existing metro station is summarized The characteristics of vertical settlement curve of the left and right track in the construction process of the cross passage of the shaft and the main structure of the station are revealed.