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Introduction and quality inspection standard of undisturbed earth taking and pressurized concrete pile with full protective cylinder

The construction of undisturbed soil taking concrete cast-in-place pile with full protective simplicity adopts dual-power drill with built-in spiral blades to drill down and cut the soil to form the pile diameter. At the same time, the undisturbed soil in the protective simplicity is removed, and the concrete is inserted into the steel cage after being pressed and the protective simplicity is removed to form reinforced concrete piles. It can also use the pipe rolling machine to rotate and press the steel casing (guard cylinder), grab and other equipment to take out the hole forming technology of the soil inside the guard, install the steel cage after the hole forming, and fill the concrete of the pile body. It is suitable for clay soil layer, silt soil, sandy soil and high groundwater level, high confined water formation.

Full protection of JaneUndisturbed concrete cast-in-place pileIn the construction, a double-power drill with built-in spiral blades is adopted to drill down and cut soil to form pile diameter. At the same time, the soil in the simplified protection is removed, and the concrete is inserted into the steel cage after being pressed and the reinforced concrete pile is formed after the simplified protection is pulled out. Can also be used to rotary pressure steel casing (guard cylinder)), grab and other equipment take out the hole forming process of the soil inside the guard, install the steel cage after the hole forming, and fill the concrete of the pile body. It is suitable for clay soil layer, silt soil, sandy soil and high groundwater level, high confined water formation.

1,Undisturbed concrete cast-in-place pileCharacteristics of process technology

(1) No diameter expansion for hole formation, saving concrete.

(2) Do not use mud wall protection, high pile quality.

(3No mud produced, green environmental protection.

(4) high pile forming speed.

(5) The soil disturbance is small, and the construction process has little influence on the first pile and the surrounding environment, which is especially suitable for the project with high pile density.

(6No hole collapse, no neck shrinkage, high verticality, reliable quality.

2,Undisturbed concrete cast-in-place pileConstruction process flow chart

Construction process of undisturbed earth filling pile

3,Undisturbed concrete cast-in-place pileQuality inspection standard

Quality inspection standard1

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