既有地铁站两侧深基坑实施对地铁强相关影响研究

Study on Strong Influence of Subway at Both Sides of Deep Foundation Implementation on Subway Station

永丰路站为已建成的地下三层地铁车站,将车站上盖物业开发地下室深基坑一分为二。车站两侧深基坑实施与既有地铁车站存在强相关影响,突出表现在深基坑施工过程引起地铁车站的侧向位移与结构隆起,而这种影响对地铁开通运营后不容忽视,因此结合地铁开通时间,进行工程实施的总体策划,将基坑实施对地铁运营影响降至最低点。本文对车站两侧深基坑实施进行了详细的分析策划,并就实施过程对地铁车站的强相关影响进行了多种方法的对比分析,分析研究深入细致,较准确的掌握了影响规律及影响程度并提出了切实可靠的技术路线与技术措施,切实解决了对既有地铁车站的保护问题,具有强烈的现实意义和借鉴意义。

The existing Yongfenglu subway station has three floors underground,which divides the deep foundation of above property into two parts. Exploitation of the deep foundation at both sides of station will have strong influence on the station,resulting in lateral displacement and uplift of the structure of the station,such influence on subway operation can not be neglected. The construction in foundation has been planned to minimize its influence on the subway operation. The implementation in deep foundation at both sides of station was analyzed in detail,the influence on station by different methods were compared and analyzed and the law and degree of the influence were figured out. Some technical measures were proposed to solve the problem of the station protection,which are practical and can be as reference for other similar projects.