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混凝土灌注桩管全长可达20米,打入地下的深度可达10米,管身用φ325×12无缝钢管制成。由于地质情况不同,拔出桩管所需的力很难予测,常常可达80~90吨力。一般桩机是很难达到这样大的拔桩力,以至造成桩管无法
Concrete cast-in-place piles have a total length of up to 20 meters and penetrate into the ground to a depth of 10 meters. The pipe body is made of φ325×12 seamless steel tubes. Due to different geological conditions, the force required to pull out the pile pipe is difficult to predict, often reaching 80 to 90 tons of force. It is very difficult for a general pile driver to reach such a large pile-pulling force so that the pile pipe cannot be installed.