（1 宁波大学地基处理中心，315211；2 民航新时代机场设计研究院有限公司 上海 200335；3 同济大学地下建筑与工程系 上海 200092）

［提要］为了减少基坑开挖引起地铁隧道的位移，采用影响较小的大面积深层搅拌桩加固，但在变形要求控制十分严格的运营地铁隧道两侧进行深层搅拌桩施工会对隧道产生很大的影响。通过考虑隧道等效刚度，推导出深层搅拌桩施工对邻近隧道变形的计算方法，并将上海某工程实例的实测结果与计算结果进行比较，同时提出了控制隧道隆起的措施。

［关键词］深层搅拌桩；地铁隧道；等效刚度；隆起

Research on Influence of Adjacent Running Subway Tunnel Due to Construction of Deepmixing piles/Shi Shiyong 1，Jiang Fengping 2, Liu Tao 3(1 Soil Improvement Center of Ningbo University, Ningbo 315211, China; 2 CAAC New Era Airport Design & Research Institute Company, Shanghai 200335, China; 3 Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China)

Abstract:To reduce the displacement of subway tunnels due to the excavation, deep-mixing-piles ground treatment method which induces little influence of subway tunnel, is adopted in many projects. However, it will produce serious influence on tunnel due to the construction of deep mixing pile at both sides of running subway tunnel, of which deformation control is very rigorous. The deformation computation method of adjacent tunnel is deduced in view of the influence of deep-mixing-pile construction and the tunnel"s equivalent stiffness, and the computation results are compared with the actual measurement ones of an engineering example in Shanghai. Meanwhile, the measures of controlling tunnel blowups are put forward.

Keywords:deep-mixing-pile; subway tunnel; equivalent stiffness; blowup