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（1 寧波大學(xué)地基處理中心，315211；2 民航新時(shí)代機(jī)場(chǎng)設(shè)計(jì)研究院有限公司 上海 200335；3 同濟(jì)大學(xué)地下建筑與工程系 上海 200092）

［提要］為了減少基坑開(kāi)挖引起地鐵隧道的位移，采用影響較小的大面積深層攪拌樁加固，但在變形要求控制十分嚴(yán)格的運(yùn)營(yíng)地鐵隧道兩側(cè)進(jìn)行深層攪拌樁施工會(huì)對(duì)隧道產(chǎn)生很大的影響。通過(guò)考慮隧道等效剛度，推導(dǎo)出深層攪拌樁施工對(duì)鄰近隧道變形的計(jì)算方法，并將上海某工程實(shí)例的實(shí)測(cè)結(jié)果與計(jì)算結(jié)果進(jìn)行比較，同時(shí)提出了控制隧道隆起的措施。

［關(guān)鍵詞］深層攪拌樁；地鐵隧道；等效剛度；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