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GB2397327A - Telescopic screw pile - Google Patents

Telescopic screw pile Download PDF

Info

Publication number
GB2397327A
GB2397327A GB0400863A GB0400863A GB2397327A GB 2397327 A GB2397327 A GB 2397327A GB 0400863 A GB0400863 A GB 0400863A GB 0400863 A GB0400863 A GB 0400863A GB 2397327 A GB2397327 A GB 2397327A
Authority
GB
United Kingdom
Prior art keywords
screwpile
length
lengths
bolt holes
sets
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
Application number
GB0400863A
Other versions
GB2397327B (en
GB0400863D0 (en
Inventor
Duncan Mcgregor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCREW FAST FOUNDATIONS Ltd
Original Assignee
SCREW FAST FOUNDATIONS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SCREW FAST FOUNDATIONS Ltd filed Critical SCREW FAST FOUNDATIONS Ltd
Publication of GB0400863D0 publication Critical patent/GB0400863D0/en
Publication of GB2397327A publication Critical patent/GB2397327A/en
Application granted granted Critical
Publication of GB2397327B publication Critical patent/GB2397327B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/52Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/56Screw piles

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

A screwpile is formed from two lengths (10, 13) of tubing arranged in a telescopic relationship so that the effective length of the screwpile may be adjusted. Multiple sets of bolt holes (12) in the first length of tubing (10) can be aligned with bolt holes (18) in the second length of tubing (13) so that the two lengths of tubing (10, 13) may be bolted together to achieve the required length of the screwpile.

Description

À À À . . Àe Àe À e À À e À À À À À À À À À ÀÀ .
A SCREWPILE
THIS INVENTION concerns a screwpile of the kind used for ground anchorage and/or compressive resistance of objects such as masts and other structures where screwpiles are driven into the ground and serve to support the structure.
The height at the top of the finished pile is usually required to be at a predetermined level above ground.
When driving screwpiles into hard ground it is sometimes difficult to force the piles to a sufficiently deep level to achieve the desired height or alternatively it may be necessary to remove an upper section of the pile when further penetration is not possible.
In softer ground it would be necessary to add extra lengths of screwpile and to drive them deeper than required in order to obtain a firm anchorage.
À À À À . À c. À À À . ÀÀ À À À À . . . . À À À e. . À Both of these variations can cause disruption to the work on site and so it is an object of the present invention to provide an adjustable length screwpile to allow for unexpected variations in ground hardness.
According to the present invention there is provided a screwpile, comprising at least two lengths of screwpile axially aligned in telescopic relationship such that the effective length of the screwpile may be adjusted, and means to attach the lengths of screwpile together at a predetermined overall length.
The screwpile may have first and second lengths, the first length of screwpile having at least one helical flight on its outer surface to enable ground penetration thereby.
The second length of screwpile may have a drive plate for rotating the screwpile.
The first length of screwpile may have a plurality of sets of bolt holes for selective alignment with a corresponding set of bolt holes in the second length of screwpile.
À::: À e: :: :.
eae e À Àe *À À . À À Àe A third length of screwpile may be located between and aligned with the first and second lengths and have a plurality of sets of bolt holes for selective alignment with corresponding sets of bolt holes in the first and second screw piles.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Fig. 1 shows a first tubular length of screwpile; and Fig. 2 shows a second tubular length of screwpile with a drive plate mounted thereon.
Referring now to the drawings, a first tubular length of screwpile 10 carries, in its lower region, one or more helical flights 11 on its outer surface to enable ground penetration upon rotation of the screwpile.
In this example, the screwpile length 10 has four longitudinally spaced sets, each of three bolt holes 12 whose axes extend diametrically through the tubular screwpile. 4t
4 À t ' À À . À4 '.4 C lee . À 4 À . 1 Referring now to Fig. 2 a second tubular length 13 of screwpilehaving an inner diameter slightly in excess of the outer diameter of screwpile length 10, is attached at 14 and 15 by welding to a larger diameter tubular member 16 having a drive plate 17 at its upper end.
The screwpile length 13 has one set of three bolt holes 18 at its lower end.
In use, the first screwpile length 10 has its upper end inserted into the lower end of the second screwpile length 13 and the two lengths are arranged such that one set of bolt holes 12 (preferably below the uppermost set) and the bolt holes 18 are aligned so that three fixing bolts may be passed therethrough to attach the two screwpile lengths together. The drive plate 17 is rotated which causes rotation of the entire screwpile and, due to the helical flights 11, the screwpile may thus penetrate the ground. When penetration has reached almost the level of the aligned bolt holes 12 and 18, the fixing bolts may be removed, and the bolt holes 18 in the second screwpile length may then be aligned with one of the further (higher) sets of bolt holes 12 in the first screwpile length.
The screwpile continues to be driven into the ground until resistance is met at the lower end of the first screwpile length 10 at which e r 8 8 8 e# 8 8.. À 8 8 8 8 ee 866 8 e ed8 e e À e e 8. À eve c time the over all length of the screwpile may be adjusted to the required upper level by selecting the appropriate set of bolt holes 12 to be aligned with the bolt holes 18.
Typically, in many circumstances rock or very dense soils will occur at greater depths and so the first screwpile length 10 may have only one set of bolt holes 12 at its upper end. In this case, a third length of screwpile may be provided which is telescopically engagable with the first and second screwpiles and is located between them. In this case, the third screwpile length may have several longitudinally spaced sets of bolt holes similar to the bolt holes 12 in Fig. 1. Thus, the first and second screwpile lengths as illustrated may be telescopically adjustable with respect to the third screwpile length and the bolts inserted through the appropriate aligned sets of bolt holes.
The embodiment described and illustrated in the drawings is for use when boring into rock, the helical flights 11 being designed for that purpose. However, different configurations of helical flights may be provided as required.
Typically, the first and second screwpile lengths may be some 2m long each, with the sets of bolt holes 12 at 300mm spacing.
À: .ee: a: À : Bea:: :: Be: I. À. À It will be appreciated that in addition to enabling an installer to select the appropriate level for the upper end of the screwpile, since the screwpile consists of at least two axially aligned lengths, there is a considerable advantage when operating in areas of limited headroom when compared with a one-piece screwpile of sufficient length to obtain the necessary level of penetration.
As with standard screwpiles, the screwpile lengths described herein may be of galvanised steel, and the boring tip and helical flights may be chosen as required and in accordance with ground investigation carried out prior to installation.
In view of the adjustability in length of the screwpile the rotational torque may be applied at the lowest possible level thus to avoid any twisting of the screwpile lengths. In the event that the screwpile is to be removed the second screwpile length may be adjusted downwardly as the screwpile is progressively lifted from the ground. À À

Claims (6)

ce ace c ece see e. es. CLAIMS
1. A screwpile comprising at least two lengths of screwpile axially aligned in telescopic relationship such that the effective length of the screwpile may be adjusted, and means to attach the lengths of screwpile together at a predetermined overall length.
2. A screwpile according to Claim 1, having first and second lengths, the first length of screwpile having at least one helical flight on its outer surface to enable ground penetration thereby.
3. A screwpile according to Claim 2, wherein the second length of screwpile has a drive plate for rotating the screwpile.
4. A screwpile according to Claim 2 or Claim 3, wherein the first length of screwpile has a plurality of sets of bolt holes for selective alignment with a corresponding set of bolt holes in the second length of screwpile.
À À À e À . . . . À . . . . . À .. . . . ...
À . . À À À
5. A screwpile according to any preceding claim, including three lengths of screwpile such that a third length may be located between and aligned with first and second lengths and having a plurality of sets of bolt holes for selective alignment with corresponding sets of bolt holes in the first and second screwpiles.
6. A screwpile substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB0400863A 2003-01-16 2004-01-15 A screwpile Expired - Fee Related GB2397327B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0300997A GB0300997D0 (en) 2003-01-16 2003-01-16 A screw pile

Publications (3)

Publication Number Publication Date
GB0400863D0 GB0400863D0 (en) 2004-02-18
GB2397327A true GB2397327A (en) 2004-07-21
GB2397327B GB2397327B (en) 2005-08-24

Family

ID=9951263

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0300997A Ceased GB0300997D0 (en) 2003-01-16 2003-01-16 A screw pile
GB0400863A Expired - Fee Related GB2397327B (en) 2003-01-16 2004-01-15 A screwpile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0300997A Ceased GB0300997D0 (en) 2003-01-16 2003-01-16 A screw pile

Country Status (1)

Country Link
GB (2) GB0300997D0 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409671A (en) * 2011-08-04 2012-04-11 广东保威新能源有限公司 Spiral ground pile with adjustable column mounting height
US8156695B2 (en) 2007-06-20 2012-04-17 Anchor Systems (Europe) Ltd. Anchor post
CN102493442A (en) * 2011-12-16 2012-06-13 浙江博雷重型机床制造有限公司 Spiral ground pile
WO2012120174A1 (en) 2011-03-08 2012-09-13 Abengoa Solar New Technologies, S. A. Device and method for laying the foundations of a solar collector supporting structure in the ground
EP3219877A1 (en) 2009-02-18 2017-09-20 Anchor Systems (International) Limited Anchor post
RU187577U1 (en) * 2018-11-08 2019-03-12 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" SCREW TELESCOPIC PILET FROM GLASS PIPES WITH SUPPORT HEADREST
RU191864U1 (en) * 2019-05-06 2019-08-26 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" HEAD TELESCOPIC SCREW PILING FROM GLASS PIPES FOR BUSH INVENTORY ICE CUTTER
US11851840B1 (en) 2022-12-15 2023-12-26 John Lawrie, Inc. Coupling for driven steel pipe piles and method of manufacturing same
RU228064U1 (en) * 2024-05-03 2024-08-14 Дмитрий Иванович Щенников Screw post, mainly for fencing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2769003C1 (en) * 2021-07-09 2022-03-28 Николай Сергеевич Мальцев Extendable screw pile and method for its arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014441A1 (en) * 1997-09-18 1999-03-25 Steel Foundations Limited Screw pile anchor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014441A1 (en) * 1997-09-18 1999-03-25 Steel Foundations Limited Screw pile anchor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9003722B2 (en) 2007-06-20 2015-04-14 Anchor Systems (Europe) Ltd. Anchor post
US8156695B2 (en) 2007-06-20 2012-04-17 Anchor Systems (Europe) Ltd. Anchor post
US9677296B2 (en) 2007-06-20 2017-06-13 Anchor Systems (International) Limited Anchor post
US9151070B2 (en) 2007-06-20 2015-10-06 Anchor Systems (Europe) Ltd Anchor post
EP3219877A1 (en) 2009-02-18 2017-09-20 Anchor Systems (International) Limited Anchor post
EP2685008A4 (en) * 2011-03-08 2014-09-10 Abengoa Solar New Tech Sa Device and method for laying the foundations of a solar collector supporting structure in the ground
EP2685008A1 (en) * 2011-03-08 2014-01-15 Abengoa Solar New Technologies, S.A. Device and method for laying the foundations of a solar collector supporting structure in the ground
WO2012120174A1 (en) 2011-03-08 2012-09-13 Abengoa Solar New Technologies, S. A. Device and method for laying the foundations of a solar collector supporting structure in the ground
CN102409671A (en) * 2011-08-04 2012-04-11 广东保威新能源有限公司 Spiral ground pile with adjustable column mounting height
CN102493442A (en) * 2011-12-16 2012-06-13 浙江博雷重型机床制造有限公司 Spiral ground pile
RU187577U1 (en) * 2018-11-08 2019-03-12 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" SCREW TELESCOPIC PILET FROM GLASS PIPES WITH SUPPORT HEADREST
RU191864U1 (en) * 2019-05-06 2019-08-26 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" HEAD TELESCOPIC SCREW PILING FROM GLASS PIPES FOR BUSH INVENTORY ICE CUTTER
US11851840B1 (en) 2022-12-15 2023-12-26 John Lawrie, Inc. Coupling for driven steel pipe piles and method of manufacturing same
RU228064U1 (en) * 2024-05-03 2024-08-14 Дмитрий Иванович Щенников Screw post, mainly for fencing

Also Published As

Publication number Publication date
GB2397327B (en) 2005-08-24
GB0300997D0 (en) 2003-02-19
GB0400863D0 (en) 2004-02-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110115