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The mechanism of piling into rocks of steel pipe pile ', earth blockage and type selection of pile toe 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。
The pulse width and impact velocity as small as possible on the premise that can obtain reflection from the pile toe.
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。
A theoretical computational formula has been given, it can react the rule that pile toe resistance changes with pile distance in large pile groups foundation.
该公式能较好地反映大型群桩基础的端阻力随桩距变化的客观规律。
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