地铁保护区范围内的深基坑支护施工  

Support Construction of Deep Foundation Pit in Subway Protection Area

作　　者：庞小军[1] 王昊鹏 陈桂森 PANG Xiaojun;WANG Haopeng;CHEN Guisen(Beijing Branch of China Railway Construction Engineering Group,Beijing 100070,China)

机构地区：[1]中铁建工集团有限公司北京分公司,北京100070

出　　处：《建筑施工》2021年第8期1455-1456,1465,共3页Building Construction

摘　　要：结合工程实际,对地铁保护区范围内深基坑的支护施工进行了研究。通过采用钻孔灌注桩+预应力锚索+钢支撑组合支护方式,顺利完成了地铁保护区范围内的深基坑支护工作,实施效果良好,既保证了深基坑的稳定,又减小了对既有地铁的影响。实践证明,该支护方式技术工艺完善,具有安全、经济、施工方便等优势。Combined with the engineering practice,the support construction of deep foundation pit in the subway protection area is studied.By adopting the combined support method of cast-in-place pile,prestressed anchor cable and steel support,the deep foundation pit support work within the subway protection area is successfully completed.The implementation effect is good.It not only ensures the stability of the deep foundation pit,but also reduces the impact on the existing subway.The practice has proved that the technology of such supporting method is perfect and has the advantages of safety,economy and convenient construction.

关 键 词：深基坑 地铁保护区 支护施工 基坑稳定性 

分 类 号：TU753[建筑科学—建筑技术科学]