大直径人工挖孔桩在桥梁基础中的设计与研究

Design and Study of Hand-dug Piles of Large Diameter for Bridge Foundation

结合南京市草场门立交一期跨线桥基础设计与施工，在桥桩设计中采用了超大直径，超深孔的人工孔嵌岩灌注桩，并取得成功。本文就有关设计与施工问题作了研究与论述。

Studies are made incorporate with the design and construction of the foundation for the crossing bridge in the first phase of Caochangmen interchange Project in Naming. In the design of bridge piles, super - large diameter and super - deep hand - dug piles inlaid with rock are successfully employed.