The paper introduced how to solve surface leakage of excavated pile with double protective casing and the better results have been achieved.
本文介绍采用双护筒解决挖孔桩地表水渗漏问题，取得了较好的效果。
Sutong Bridge located in the tidal reach adopts the pile-group foundation with large-diameter and over-length bored piles working with the steel casing together.
位于潮汐河段的苏通大桥采用大直径、超长钻孔灌注群桩基础，而且需要考虑钢护筒的共同作用。
Sutong Bridge located in the tidal reach adopts the pile-group foundation with large-diameter and over-length bored piles working with the steel casing together.
位于潮汐河段的苏通大桥采用大直径、超长钻孔灌注群桩基础，而且需要考虑钢护筒的共同作用。
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