根据本工程实例情况，人工挖孔桩桩底标贯试验是非常必要的。
The standard penetration test(SPT)of base-pile of the artificial bored pile is very essential according to the feature of this project.
控制点标志设置采用了深桩强制对中观测墩与普通标石相结合的方式；
The control point symbolized the establishment used the deep pile to force to the center to observe the way which the pillar and the ordinary monument unified;
控制点标志设置采用了深桩强制对中观测墩与普通标石相结合的方式；
The control point symbolized the establishment used the deep pile to force to the center to observe the way which the pillar and the ordinary monument unified;
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