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Spiral Cylinder Soil Squeeze Bit and Its Pile-forming Construction Method

A spiral and column technology, applied in the field of construction, can solve the problem of not having hole expansion and diameter expansion, and achieve the effect of saving concrete consumption, strong pulling resistance and high bearing capacity of single pile.

Active Publication Date: 2018-07-24
刘守进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spiral cone soil squeezing bit only has the function of directly squeezing and expanding the pile hole when drilling, and does not have the function of expanding the diameter of the hole

Method used

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  • Spiral Cylinder Soil Squeeze Bit and Its Pile-forming Construction Method
  • Spiral Cylinder Soil Squeeze Bit and Its Pile-forming Construction Method
  • Spiral Cylinder Soil Squeeze Bit and Its Pile-forming Construction Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 No-connecting rod single drill tip helical cylinder soil squeezing drill bit and construction method for pile formation

[0033] (1) No connecting rod single drill tip helical cylinder soil squeezing drill bit

[0034] Such as Figure 1-Figure 4 As shown, the helical cylinder soil extruding bit includes a helical extruding soil blade 1, a joint 2, a core pipe 3, an ear plate 4, an alloy tooth I5, a baffle plate 6, a drill tip 7 and a pin I8.

[0035] The joint 2 and the core pipe 3 are welded into an integral structure, and the spiral extruding blade 1 is coiled on the joint 2 and the core pipe 3. The radius of the formed circle is φ 1 , the circle radius of joint 2 and core tube 3 is φ 2 . 2φ 1 =350~800mm, where φ 2 =0.58~0.75φ 1 . Pitch H=1.2~1.6φ 1 .

[0036] The lower end of the core tube 3 is provided with an alloy tooth I5 and an ear plate 4 .

[0037] The bottom port of the core tube 3 is installed with a welded baffle plate 6 and a drill ti...

Embodiment 2

[0046] Embodiment 2 Single-link single-drill point helical cylinder soil-extruding drill bit and pile-forming construction method

[0047] Such as Figure 5-Figure 6 As shown, the single-rod, single-drill-tip helical cylinder soil-extrusion drill bit includes spiral soil-extrusion blade 1, joint 2, core tube 3, lug plate 4, alloy tooth I5, baffle plate 6, drill tip 7, and pin shaft I8 , Connecting rod Ⅰ9-1, connecting rod Ⅱ9-2, pin shaft Ⅱ10, afterburner plate 11, pin shaft Ⅲ12-1, pin shaft Ⅳ12-2, rod seat Ⅰ13-1 and rod seat Ⅱ13-2.

[0048] The joint 2 and the core pipe 3 are welded into an integral structure, and the spiral extruding blade 1 is coiled on the joint 2 and the core pipe 3. The radius of the formed circle is φ 1 , the circle radius of joint 2 and core tube 3 is φ 2 . 2φ 1 =350~800mm, where φ 2 =0.58~0.75φ 1 . Pitch H=1.2~1.6φ 1 .

[0049] The lower end of the core tube 3 is provided with an alloy tooth I5 and an ear plate 4 .

[0050] The bottom port o...

Embodiment 3

[0059] Example 3 Double-connecting-rod, double-drill-tip helical cylinder soil-extruding drill bit and pile-forming construction method

[0060] (1) Double connecting rod double drill point helical cylinder soil squeezing drill bit

[0061] Such as Figure 7-Figure 8 As shown, the double-rod, double-drill-tip helical soil-extruding drill bit includes a helical-extrusion blade 1, a joint 2, a core tube 3, two sets of lugs 4, alloy teeth I5, and two movable baffles I6. -1 constitutes a complete baffle 6, two movably connected drill points I7-2 form a complete drill point 7, two pin shafts I8, connecting rod I9-1, connecting rod II9-2, pin shaft II10, afterburner plate 11, pin shaft III12-1, pin shaft IV12-2, rod seat I13-1 and rod seat II13-2.

[0062] The joint 2 and the core pipe 3 are welded into an integral structure, and the spiral extruding blade 1 is coiled on the joint 2 and the core pipe 3. The radius of the formed circle is φ 1 , the circle radius of joint 2 and co...

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Abstract

The invention relates to a spiral column soil-squeezing drill and a pile-forming construction method thereof. The spiral column soil-squeezing drill comprises a spiral soil-squeezing blade, an interlink and a core tube, wherein the interlink and the core tube are welded into an integrate structure, the spiral soil-squeezing blade is coiled on the interlink and the core tube, the lower end of the core tube is provided with an alloy tooth I and lug plates, the end opening of the bottom of the core tube is provided with baffle plates and drill tips, which are welded together, the baffle plates are movably connected with pin shafts I mounted on the lug plates through the drill tips, after the baffle plates and the drill tips rotate around the pin shafts I to open the end opening, the radius phi3 of a circle formed by each of tip tops A of the drill tips rotating around the center line of the core tube is larger than the radius phi1 of a circle formed by the outer edge of the spiral soil-squeezing blade, by assuming that a difference value of the phi3 and the phi1 is delta, delta is larger than or equal to 5mm, and is smaller than or equal to 80mm; and alloy teeth II are arranged at the drill tips. According to the drill and the pile-forming construction method thereof, provided by the invention, a manner of twice soil squeezing is adopted, the pile-forming collateral resistance is increased while the pile-forming hole soil discharge amount is reduced, so as to improve the bearing capacity of a foundation pile.

Description

technical field [0001] The invention relates to pile construction foundations in the field of construction, in particular to a helical cylinder soil-extruding drill bit and a pile-forming construction method utilizing the same. Background technique [0002] In the construction pile foundation, the spiral squeeze soil pump pressure-filled concrete pile is widely used because of its high construction efficiency, wide adaptability to strata, high pile bearing capacity, energy saving and emission reduction, etc. Among them, screw piles, two-way spiral extruded piles and spiral cone extruded soil piles are typical representatives, and they are all used in specific implementation. The screw pile is a kind of non-drainage pile, which is completed by special screw pile construction equipment, and the equipment manufacturing cost is high. The synchronous control technology of the equipment is the core, that is, within the range of the pile length, every time the drilling tool rotate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/44E02D5/36E02D5/56
CPCE02D5/36E02D5/56E21B10/44
Inventor 刘守进韩殿启曹福德谭吉学张桂芳薛淑华郭海艳王国岐路守园鲁春新王兴恺徐波沈洪贤李岚徐嘉美管桂芝李殊睿韩笑
Owner 刘守进
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