地铁暗挖车站紧邻高层建筑物摩擦桩基础施工技术

Construction Technique of Metro Station Tunnel Close to High-rise Buildings with Frictional Pile Foundation

高层建筑的摩擦桩基础极易受暗挖隧道影响而产生不均匀沉降。广州地铁五号线小北站暗挖隧道近距离通过既有摩擦桩群,车站地质条件复杂,施工难度极大。以成功的工程实例做背景,详细阐述了地铁车站暗挖隧道紧邻高层建筑摩擦桩基础的施工技术。

Differential settlement is subject to occur to the high-rise buildings with friction pile foundations, which are easily affected by the tunnel excavation activities. The underground tunnel of Xiaobei station on line 5 of Guangzhou Metro passes close to the existing friction piles and the geological condition of the Metro station is complex, therefore there exist great difficulties in the construction of the underground tunnel. On basis of the successful case history, the paper presents the construction technology for the underground tunnel of the Metro station that passes close to the highrise buildings with friction pile foundations.