A new pile-driven technology named air curtain dry soil withdrawal can reduce resistance of a sinking pipe by withdrawing soil from the pipe and installing air curtain on the outside of pipe.
空气幕、套管内干取土沉管灌注桩这种新的施工工艺是通过套管内取土，套管外设空气幕来减少沉管阻力。
The necessity of the resistance of pile-sinking estimation was analyzed.
分析了估算沉桩阻力的必要性。
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