The mechanism of piling into rocks of steel pipe pile ', earth blockage and type selection of piletoe are discussed.
文章讨论了钢管桩在基岩中的沉桩机理、土塞问题和钢管桩桩端的选型。
2
The pulse width and impact velocity as small as possible on the premise that can obtain reflection from the piletoe.
在能够获得桩底反射的前提下，脉冲宽度和敲击速度尽量小。
3
A theoretical computational formula has been given, it can react the rule that piletoe resistance changes with pile distance in large pile groups foundation.