Based on the choice of exterior protected construction of Nanjing Yuantong subway station in the holocene alluvium,the secant pile for exterior protected construction of a large foundation ditch in alluvium can speeding up the engineering and reduce const%通过对处于全新世冲淤沉积层的南京地铁元通站围护结构的比选,认为在全新世冲淤沉积层中的长大基坑施工可以采用咬合桩作为围护结构,这样既可以加快施工进度,又能降低工程造价,将对今后建设提供理论支持。
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