GB2070668A - Auger for the manufacturing of concrete foundation piles - Google Patents
Auger for the manufacturing of concrete foundation piles Download PDFInfo
- Publication number
- GB2070668A GB2070668A GB8105700A GB8105700A GB2070668A GB 2070668 A GB2070668 A GB 2070668A GB 8105700 A GB8105700 A GB 8105700A GB 8105700 A GB8105700 A GB 8105700A GB 2070668 A GB2070668 A GB 2070668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill
- core
- diameter
- drilling
- concrete foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims 2
- 239000002689 soil Substances 0.000 description 12
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
An auger for the manufacture of concrete foundation piles has a hollow core 1 which is encircled by a helical blade 2 and which at a distance from the drill tip has a conical portion 3 which increases in diameter in the direction away therefrom to a diameter which is at least substantially equal to the outer diameter of the helical blade 2, said conical portion 3 continuing into a cylindrical part 8 having a smooth outer surface, preferably of a diameter which is greater than the outer diameter of the blade 2. A method of drilling with the auger consists in drilling deep into a supporting layer 9 so that the side walls of the hole are compressed by the conical portion 3 of the core 1. <IMAGE>
Description
SPECIFICATION
Screw drill for the manufacturing of concrete foundation piles
The invention relates to a screw drill for the
manufacturing of concrete foundation piles, comprising a hollow core open at top and
bottom which core has been surrounded by a
helical drilling blade extending radially outside the core and at the lower end extends towards the drill tip formed by the core and having at the upper end means for connecting the drill to a driving device.
A screw drill of this type is generally known. The core of this known screw drill has the same inner and outer diameter over its entire length and the outer diameter of the helical blade is the same over the entire length with the exception of its portion adjacent to the drill tip. A hole is drilled into the soil with the aid of such a screw drill which hole is filled with concrete during the withdrawal of the drill by pooring the concrete through the hollow core.
During the drilling operation a hole is formed the side walls of which have less or no strength and are disturbed by the drilling operation. During drilling layers of insufficient supporting strength such as peat moor are drilled through and and at those places subsidance or deformation of the wall of the hole easily can take place.
During the withdrawal of the drill one always has to take care that the concrete pressure within the space below the drill is larger than the pressure of the soil. If this is not done the soil around the drilled hole can be pressed inwardly by the pressure of the surrounding soil and locally constrictions of the concrete column can be formed.
However, outwardly bulging portions can be formed as well in case the soil is soft to a degree such that it behaves like a viscus substance having a specific weight which is considerably smaller than the specific weight of the concrete.
The concrete column formed in the hole then cannot maintain its form; the concrete mass wi:l move downwardly so that the concrete pile at the under end is much wider and is very small at the upper end.
Purpose of the invention is to provide a screw drill by means of which a hole and accordingly a concrete pile can be manufactured which avoids the above-mentioned problem.
According to the invention this purpose is achieved in that the outer surface of the core, with equally remaining or almost equally remaining outer diameter of the drilling blade, at a distance from the drill tip increases conically in diameter in an upward direction until a diameter which at least of the magnitude of the outer diameter of the drill blade. By its
conical increase in diameter of the outer sur
face of the core one achieves that the soil
which is moved upwardly by the drillblade is
pressed away laterally so that compression of
the soil around the drilled hole is obtained
having sufficient slide resistance to support
the concrete column during the filling up until
the concrete is sufficiently hardened.Said
condensed wall of the hole on one side is able
to withstand the pressure of the soil and on
the other side the pressure of the concrete.
Preferably said portion of the core following
the conical portion is made cylindrical with
the helical blade ending upon the conical
portion. This cylindrical portion maintains the
already formed hole and this effect is in
creased further if the cylindrical portion is
given a diameter langer than the outer diame
ter of the blade. The upper portion of the
conical part and the cylindrical part take care
to condense the wall due to the fact that the
cylindrical portion makes a larger hole diame
ter than the drilling blade. The latter taking
care for the supply of loosened soil which also in this case is pressed away laterally into the
wall of the hole.
It is observed that from the published Dutch
patent application 7408154 it is known to
solve the problem of the present invention by
placing a flexible bag into the hole during the
withdrawal of the drill which bag surrounds
the concrete. However with this different way
of solving this problem undesirable shapes of
the pile cannot complete be avoided.
With the known screw drill it is common
practice to drill until the supporting layer has
been reached and a sufficient cone resistance
is measured in the order of magnitude of 10
kg/cm2. Thereafter the drill is withdrawn
whilst concrete is supplied with the above
mentioned disadvantages.
With the drill according to the invention
another method is possible and desirable.
With the drill according to the invention it is
useful to to drill up to depth where the drill
has penetrating the supporting layer with its
conical core portion before the drill is with
drawn. This means that the wall of the hole is
condensed up to the supporting layer. The
drill itself penetrates in the supporting layer
than is usual but the above described problem
with respect to the wall of the hole does not
occur in the supporting layer.
The drawing shows an embodiment of the
drill according to the invention.
Said drill is formed by a hollow core tube 1
surrounded by the helical blade 2. In the
upper part a conical widening 3 has been
provided followed by a smooth cylinder 4.
The helicalblade 2 ends the conical portion 3.
The diameter of the cylindrical part 4 is larger
than the diameter of the helical blade 2.
5 is a known driving device and 6 a known
filling hose for concrete.
The loosened soil is moved upwardly by the helical blade 2 of the screw drill, the conical portion 3 preventing that the soil moves above the surface 7. Said soil is pressed away laterally and during further downward movement of the drill the cylindrical wall 4 takes care that the wall 8 of the hole is smoothened. The interrupted line 9 indicates the supporting layer and according to the invention drilling can now be continued to a depth such that the conical portion 3 preferably at the location of the transition towards the cylindrical part 4 has been moved up to the layer 9.
Claims (6)
1. Screw drill for manufacturing concrete foundation piles comprising a hollow core open at the top and bottom, which core has been surrounded by a helical drilling blade which extends radially outside of the core and at the lower end extends towards the drill pointed formed by the core whilst at the upper end means are provided for connecting the drill to a driving member, characterized in that the outer surface of the core, with equally remaining or almost equally remaining outer diameter of the drilling blade, at a distance from the drill tip conically increases in diameter in an upward direction until a diameter which at least is in the order of magnitude of the outer diameter of the drill blade.
2. Screw drill according to claim 1, characterized in that on top of the conical part of the core a cylindrical part has been provided having a smooth outer surface.
3. Screw drill according to claim 2, characterized in that the cylindrical part has a diameter which is larger than the outer diameter of the drilling blade.
4. Method for applying the screw drill according to one or more of the preceding claims for the manufacturing of concrete foundation piles by drilling with the drill into the supporting layer and subsequently supplying mortar through the hollow core during the withdrawal of the drill, characterized in that the drill is moved with its conical core portion into the supporting layer before the with drawl and the supply of mortar takes place.
5. Screw drill for manufacturing concrete foundation piles substantially as hereinbefore described with reference to the accompanying drawing.
6. A method of drilling substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE8001125,A NL189924C (en) | 1980-02-25 | 1980-02-25 | SCREW DRILL FOR MAKING CONCRETE FOUNDATION POSTS INTO GROUND AND METHOD FOR USING THIS SCREW DRILL. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2070668A true GB2070668A (en) | 1981-09-09 |
| GB2070668B GB2070668B (en) | 1983-08-24 |
Family
ID=19834886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8105700A Expired GB2070668B (en) | 1980-02-25 | 1981-02-24 | Auger drill for the manufacturing of concrete foundation piles |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3107070A1 (en) |
| GB (1) | GB2070668B (en) |
| HK (1) | HK21585A (en) |
| NL (1) | NL189924C (en) |
| SG (1) | SG74684G (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2362674A (en) * | 2000-05-26 | 2001-11-28 | Pennine Holdings Ltd | Auger with helical flight and fluid channel |
| US6478512B2 (en) | 2000-04-11 | 2002-11-12 | Compagnie Du Sol | Machine for making bored piles |
| NL1027150C2 (en) * | 2004-09-30 | 2006-04-03 | Ecodrie B V | Earth auger useful for fabricating foundation piles comprises a helical blade that extends over just part of a cylindical tube near the bottom end |
| EP2133507A1 (en) * | 2008-06-13 | 2009-12-16 | BAUER Maschinen GmbH | Drilling device and drilling method |
| US20110229272A1 (en) * | 2009-09-17 | 2011-09-22 | Mike Lindsay | Drill tip for foundation pile |
| US20120213596A1 (en) * | 2005-03-02 | 2012-08-23 | Steve Neville | Systems and methods for coupling a drill rig to a screw pile |
-
1980
- 1980-02-25 NL NLAANVRAGE8001125,A patent/NL189924C/en not_active IP Right Cessation
-
1981
- 1981-02-24 GB GB8105700A patent/GB2070668B/en not_active Expired
- 1981-02-25 DE DE19813107070 patent/DE3107070A1/en not_active Withdrawn
-
1984
- 1984-10-25 SG SG746/84A patent/SG74684G/en unknown
-
1985
- 1985-03-21 HK HK215/85A patent/HK21585A/en not_active IP Right Cessation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478512B2 (en) | 2000-04-11 | 2002-11-12 | Compagnie Du Sol | Machine for making bored piles |
| GB2362674A (en) * | 2000-05-26 | 2001-11-28 | Pennine Holdings Ltd | Auger with helical flight and fluid channel |
| NL1027150C2 (en) * | 2004-09-30 | 2006-04-03 | Ecodrie B V | Earth auger useful for fabricating foundation piles comprises a helical blade that extends over just part of a cylindical tube near the bottom end |
| US20120213596A1 (en) * | 2005-03-02 | 2012-08-23 | Steve Neville | Systems and methods for coupling a drill rig to a screw pile |
| US9284708B2 (en) * | 2005-03-02 | 2016-03-15 | Steve Neville | Screw pile substructure support system |
| US9587362B2 (en) * | 2005-03-02 | 2017-03-07 | Steve Neville | Systems and methods for coupling a drill rig to a screw pile |
| US20190234036A1 (en) * | 2005-03-02 | 2019-08-01 | Steve Neville | Screw pile substructure support system |
| US10954644B2 (en) * | 2005-03-02 | 2021-03-23 | Drill Tech Drilling And Shoring, Inc. | Screw pile substructure support system |
| EP2133507A1 (en) * | 2008-06-13 | 2009-12-16 | BAUER Maschinen GmbH | Drilling device and drilling method |
| US8322458B2 (en) | 2008-06-13 | 2012-12-04 | Bauer Maschinen Gmbh | Drilling rig and drilling method |
| US20110229272A1 (en) * | 2009-09-17 | 2011-09-22 | Mike Lindsay | Drill tip for foundation pile |
Also Published As
| Publication number | Publication date |
|---|---|
| NL189924B (en) | 1993-04-01 |
| HK21585A (en) | 1985-03-29 |
| NL8001125A (en) | 1981-09-16 |
| SG74684G (en) | 1985-04-26 |
| GB2070668B (en) | 1983-08-24 |
| NL189924C (en) | 1993-09-01 |
| DE3107070A1 (en) | 1981-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6425713B2 (en) | Lateral displacement pier, and apparatus and method of forming the same | |
| KR100968656B1 (en) | Apparatus and method for forming compacted piers with multiple lifts | |
| US3842608A (en) | Method and means for installing load bearing piles in situ | |
| CA2214552C (en) | Drill for making a pole in the ground and method applying this drill | |
| US5833399A (en) | Apparatus for use in forming piles | |
| US4618289A (en) | Method of forming a cast-in-place support column | |
| US3540225A (en) | Construction pile and a method of producing same in situ | |
| EP0069181B1 (en) | Method of and apparatus for use in reinforcing a piling structure, and a precast concrete pile for use in the method | |
| US4100750A (en) | Method for the production of piles cast in the ground and hollow auger for implementing the method | |
| US4009582A (en) | Method for forming deep cast-in-place caseless concrete piles | |
| US3512365A (en) | Method of forming a pile in situ | |
| GB2070668A (en) | Auger for the manufacturing of concrete foundation piles | |
| US5697734A (en) | Method for forming a foundation pile in the ground utilizing a prefabricated pile shaft | |
| US3971227A (en) | Installation of expanded base piles | |
| US2184514A (en) | Shoe for driving piles | |
| US3881320A (en) | Pile installation in submerged bearing strata | |
| CN104929108B (en) | A kind of construction method of hard soil site PCC | |
| CN106087958B (en) | The method of basement process device and basement process | |
| US4725167A (en) | Pile driving | |
| AU2017218639B2 (en) | Method for producing an anchoring tie rod and anchoring tie rod | |
| EP0921234A1 (en) | Method and device for arranging a pile in a ground | |
| RU2426835C1 (en) | Device to form bore piles | |
| EP0519575B1 (en) | Method of making a foundation pile | |
| US4575283A (en) | Device and process for making unclad concrete piles | |
| CN208201854U (en) | A kind of anti-pulling pipe piles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20010223 |