Construction method using long spiral drilling and wall protection for construction of soil squeezing pile
A technology of long auger drilling, construction method, applied in the direction of sheet pile wall, foundation structure engineering, construction, etc., to achieve the effect of reducing the strength of soil mass
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[0015] The long auger drilling retaining wall is used in the construction method of the soil squeezing pile. Before the construction of the soil squeezing pile, the long auger drilling machine is used to drill holes. The diameter of the drilling hole is smaller than the design diameter of the pile. The thickness of the reserved bearing layer is determined according to the strength of the soil. , Generally, the soil layer of cohesive soil should not be less than 2d (d is the diameter of the pile), sandy soil should not be less than 1.5d, and gravel soil should not be less than 1d. When the strength of the soil layer is relatively high, the reserved soil layer is relatively thin, and the state of the original soil layer used in the design of the pile side and pile tip without disturbing the pile shall prevail. Please refer to figure 1 . The construction sequence is:
[0016] 1. The drilling rig is in place;
[0017] 2. Drill forward to the thickness of the reserved pile side a...
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