CA2456398A1 - Pole reinforcing structures - Google Patents

Pole reinforcing structures Download PDF

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Publication number
CA2456398A1
CA2456398A1 CA002456398A CA2456398A CA2456398A1 CA 2456398 A1 CA2456398 A1 CA 2456398A1 CA 002456398 A CA002456398 A CA 002456398A CA 2456398 A CA2456398 A CA 2456398A CA 2456398 A1 CA2456398 A1 CA 2456398A1
Authority
CA
Canada
Prior art keywords
reinforcing element
pole reinforcing
pole
web
channels
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.)
Abandoned
Application number
CA002456398A
Other languages
French (fr)
Inventor
Chris Rankine
Peter Yttrup
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.)
POLE FOUNDATIONS FINANCE Pty Ltd
Original Assignee
POLE FOUNDATIONS FINANCE PTY 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 POLE FOUNDATIONS FINANCE PTY LTD. filed Critical POLE FOUNDATIONS FINANCE PTY LTD.
Publication of CA2456398A1 publication Critical patent/CA2456398A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0225Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0439Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0447Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452H- or I-shaped
    • E04C2003/0456H- or I-shaped hollow flanged, i.e. "dogbone" metal beams
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0473U- or C-shaped

Abstract

A pole reinforcing element having oppositely disposed channels interconnected by a web.
The oppositely disposed channels are formed in a geometric shape selected from the group consisting of cylinders, rectangles, and other geometric shapes so that the pole reinforcing element has a high structural rigidity and can provide substantial support to a utility pole to be reinforced.

Description

Docket No. 62334.1 POLE REINFORCING STRUCTURES
BACKGROITND OF THE INVENTION
[0001) 1. Field of ttae Invention:
[0002] The present invention is directed to the field of reinforcing elements to be used within the service utilities industries to reinforce utility poles and the Like.
[0003] 2. General Background and State of the Art:
[0004) Wooden utility poles are in common use for stringing power cables, television cables, telephone wires and other types of cables or wires over long distances. While these types of poles may have a substantial life expectancy, they may eventually need to be replaced as a result of age, deterioration or physical damage or to comply with safety regulations. As an alternative to a replacement, which may cause disruption of utility services, reinforcing elements are known which can be lodged into the ground proximate to the utility pole, and then secured to the utility pole in order to reinforce the base structure of the utility pole, thereby increasing the useful life of the utility pole. A representative reinforcing element is illustrated, for example, in i3.S. Design Patent No.
425,631 issued lVlay 23, 2000. The reinforcing element of the 425,631 design patent is formed from a bent sheet of steel which may be partially or fully wrapped around a utility pole and driven into the ground to lend support to the utility pole. The design according to the 425,631 patent provides support by bracing and therefore stabilizing the utility pole.
SLT1~IMARY OF THE INVENTION
[0005) The present invention is directed to a utility pole reinforcing element which features a stronger, moxe structurally sound design having almost completely enclosed or enclosed channels at outer edges of the reinforcing element which when secured to utility poles provides a more structurally resilient reinforcing element for the utility pole. The present invention is depicted in the appended drawings and more fully described in the following detailed description of the invention and as set forth in the appended claims.
[0006) Fig. 1 depicts a perspective view of a utility pole reinforcing element of the present invention.
[0007) Fig. 2 depicts a cross-sectional view of the reinforcing element of Fig. 1.
[coos) Fig. '3 depicts a perspective view of a first alternative embodiment of a reinforcing element.
L.osAngeles/130945.2 Docket No. 62334.1 [0009] Fig. 4 depicts a cross-sectional view of the first alternative embodiment of Fig. 3.
[0010] Fig. 5 depicts a perspective view of the second alternative embodiment of the reinforcing element.
[0011] Fig. 6 depicts a cross-sectional view of the second alternative embodiment of Fig. 5.
[0012] Fig. 7 depicts a perspective view of a third alternative embodiment of the reinforcing element.
[0013] Fig. 8 depicts a cross-sectional view of the third alternative embodiment of Fig. 7.
[0014] Fig. 9 depicts a perspective view of a fourth alternative embodiment of the reinforcing element.
[OO1S] Fig. 10 depicts a cross-sectional view of the fourth alternative embodiment of Fig. 9.
DETAILED DESCRIPTION OF THE INVENTION
[0016] Fig. I depicts a pezspective view of a pole reinforcing element 10 according to the present invention. The pole reinforcing element 10 includes two hollow cylinders 12 and 14 interconnected by a web 16 that extends from the top 18 to the base (riot shown) of the pole reinforcing element 10. The cylinders 12 and I4 and the web I6 are preferably formed from structural grade steel. The steel is preferably galvanized prior to fabrication or galvanized or painted with an environmentally resistant coating after fabrication. The steel components have a thickness in a range of 3 mrn to 12 mm. The thickness of the cylinders 12 and 14 may be greater than or Less than the thickness of the web I6. The length of the pole reinforcing element 10 can be in a range of 2 to 5 meters in length. However, a length in the range of 2.4 to 2.7 meters for most standard size utility poles is adequate: The width of the web Ib section of the pole reinforcing element 10 can be in the range of 10 cm to 25 cm although larger widths may be appropriate for larger size utility poles. The diameter or width of the cylinders 12 and 14 is preferably in the range of 6 cm to 15 cm.
[0017] Fig. 2 depicts a cross-sectional view of the pole reinforcing element I
O according to Fig.
1. As illustrated in Fig. 2, the web 16 connects to the cylinders 12 and 14 in a manner such that if the plane of the web was extended, it would pass through the centerline of the cylinders 12 and 14.
It will be appreciated by those skilled in the art, however, that the line of attachment of the web 16 to the cylinders 12 and 14 may be offset from the centerline of the cylinders.
[0018] Fig. 3 depicts a perspective view of a first alternative embodiment of the pole reinforcing element I0', which also includes hollow cylinders I2 and 14. The web 16' of Fig. 2, however, generally connects tangentially to the cylinders I2 and 14. This construction is more clearly shown _2_ LosAngeles/130945.2 ~~ Docket No. 62334.1 by the cross-sectional view of Fig. 4, For the farst alternative embodiment of Figs. 3 and 4, the materials, thiclcnesses, lengths and widths described above with respect to Fig. 1 are also applicable.
[0019] Fig. 5 depicts a perspective view of a second alternative embpdiment of a pole -reinforcing element 20. In this embodiment, the web 22 interconnects oppositely disposed channels 24 and 26. The channels 24 and 26 are generally constructed in a hollow rectangular shape, although a square configuration would be applicable. The web 22 is illustrated in the cross-sectional view of Fig. 6 as connecting the channels 24 and 26 generally in the center of the long axis of the channels 24 and 26. However, the web 22 could also be offset from the centerline or even connected to the ends of the channels 24 and 26. With respect to the construction of the pole reinforcing structure 20 depicted in Figs. 5 and 6, tile types of materials, thicknesses, lengths and widths described above with respect to the first embodiment would also apply to this design.
(OOZO] From the three foregoing embodiments of the present invention, it may be appreciated that other types of geometric channel shapes could be attached to the lateral sides of the web. For example, triangular, oval or other types of polygonal columns or channels could be utilized. For ease of fabrication, however, the rectangular or cylindrical channels are preferred.
[0021] Fig. 7 depicts a perspective view of a third alternative embodiment of a pole reinforcing element 30. The configuration of Fig. 7, which is also depicted in the cross-sectional view of Fig. 8, depicts generally triangular shaped elements 32 and 34 connected to the lateral external ends of an angled web 36. The triangular shaped elements 32 and 34 may or may not be closed, although preferably they are close to being closed or completely bounded. The web element 36 may be straight or, as depicted in the figures, may have a bend in the center section to form a flattened "V"
shape. For the configuration according to Figs. 7 and 8, the materials, thicknesses, lengths and widths discussed above with respect to Figs. I and 2 are also equally applicable to this design.
[0022] Fig. 9 depicts a perspective view of another alternative embodiment of the invention which is also shown in the cross-sectional view of Fig. 10. In this embodiment, a pole reinforcing element 40 includes a web 46 that connects to two hollow channels 42 and 44 as described in the foregoing embodiments of the invention. The web 46, however, only extends partially from the top 48 of the channels 42 and 44 to a mid point 50 above the base 52 of the channels 42 and 44. This configuration will allow the channels 42 and 44 to more readily be driven into the ground next to the utility pole, and only a portion, or no portion, of the web 46 may be driven into the ground.
10023] In use, the various embodiments of the present invention may be placed against a utility pole or in proximity to a utility pole, either individually or in pairs. They may be placed such that the pole is positioned adjacent to the web of the pole reinforcing elements.
The pole reinforcing _ -3-LasAngetes/130945.2 Docket No. 62334,1 elements are then driven into the ground. A hammer, pile driver or similar device may be used to place the pole reinforcing element. Alternatively, a device to vibrate the pale reinforcing element into the ground may be used' as is known in the art. After the pole reinforcing element is fixed in the ground, metal strapping elements and/or bolts may be used to secure the pole reinforcing element to the utility pole.
[0024j Generally, the pole reinforcing element is driven into the ground to approximately one-half of its length. However, the ground or soil conditions, the integrity of the base of the utility pole and other environmental factors may be considered in determining the length of the pole reinforcing element and the division between the length driven into the gxound as opposed to the length extending above the ground available to secure the utility pole. Moreover, for the embodiment with the web only partially extending from the top to some mid point before reaching the base of the geometric channels, a greater percentage of the length of the pole reinforcing element including the web may remain protruding from the ground.
[0025] It may be appreciated by those skilled in the art that the utility pole can be secured at multiple locations on the lower portion of the utility pole, and that preferably the utility pole is secured both proximate to the ground and proximate to the top of the pole reinforcing element in addition to being secured at intermediate locations on the free standing portions of the utility pole and pole reinforcing element. As an alternative, the utility pole and the pole reinforcing element can be continuously wrapped from the bottom portion extending from the ground all the way to the top of the pole reinforcing element to maximize the securement of the pole reinforcing element to the utility pole.
[0026] I-laving described the preferred and alternative embodiments of the present invention, it is recognized that those skilled in the art will be able to make modifications of the design, which remain contemplated by the present invention in the scope of the claims appended hereto.
Accordingly, the invention is to be understood as being represented by the foregoing specification but limited only by the appropriate scope of the appended claims.
LosAngeles/130945.2

Claims (18)

1. A pole reinforcing element comprising:
oppositely disposed geometric channels; and a web extending between and connecting to said oppositely disposed geometric channels, said web and said geometric channels being two to five meters in length and formed from a material having a thickness in the range of 3 mm to 12 mm.
2. The pole reinforcing element of claim 1, wherein the shape of the oppositely disposed geometric channels is cylindrical.
3. The pole reinforcing element of claim 1, wherein the shape of the oppositely disposed geometric channels is rectangular.
4. The pole reinforcing element of claim 1, wherein the shape of the oppositely disposed geometric channels is triangular.
5. The pole reinforcing element of claim 1, wherein the web extends from a top of the geometric channels to a mid paint above a base of said geometric channels.
6. The pole reinforcing element of claim 1 wherein the web connects to the geometric channels in a plane bisecting the center of the geometric channels.
7. The pole reinforcing element of claim; 1 wherein the web connects to the geometric channels in a plane offset from the center of the geometric channels.
8. The pole reinforcing element of claim 1 wherein the web connects to the geometric channels at a point tangential to the geometric channels.
9. The pole reinforcing element of claim 1 wherein the thickness of the material of the web is not equal to the thickness of the material of the geometric channels.
10. The pole reinforcing element of claim 4 wherein the rectangular shaped geometric channel is partially open at one of its vertices.
11. The pole reinforcing element of claim 1 wherein said web has a width in the range of 10 cm to 25 cm.
12. The pole reinforcing element of claim 9 wherein said geometric channels have a width in the range of between 6 cm to 15 cm.
13. The pole reinforcing element of claim 1 wherein said geometric channels have a width in the range of between 6 cm to 15 cm.
14. The pole reinforcing element of claim 1 wherein said geometric channels have a length in the range of 2 meters to 5 meters.
15. The pole reinforcing element of claim 1 wherein said geometric channels have a length in the range of 2.4 meters to 2.7 meters.
16. The pole reinforcing element of claim 12 wherein said web has a length in the range of 2 meters to 5 meters.
17. A pole reinforcing element comprising:
oppositely disposed hollow geometric channels two to five meters in length formed from structural steel having a shape selected from the group consisting of round, oval, square, rectangle and triangle; and a web extending between and connecting to said oppositely disposed geometric channels, said web being two to five meters in length.
18. A method of reinforcing a utility pole comprising:
providing a. utility pole reinforcing element having oppositely disposed hollow geometric channels two to five meters in length formed from structural steel having a shape selected from the group consisting of round, oval, square, rectangle and triangle and a web extending between and connecting to said oppositely disposed geometric channels, said web being two to five meters in length;
driving said utility pole reinforcing element into the ground leaving at least a portion of the pole reinforcing element extending above the. ground proximate the utility pole; and securing said pole reinforcing element to said utility pole with at least one strap, bolt or similar securement element.
CA002456398A 2003-11-26 2004-01-29 Pole reinforcing structures Abandoned CA2456398A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/724,329 US20050108979A1 (en) 2003-11-26 2003-11-26 Pole reinforcing structures
US10/724,329 2003-11-26

Publications (1)

Publication Number Publication Date
CA2456398A1 true CA2456398A1 (en) 2005-05-26

Family

ID=34592465

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002456398A Abandoned CA2456398A1 (en) 2003-11-26 2004-01-29 Pole reinforcing structures

Country Status (2)

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US (1) US20050108979A1 (en)
CA (1) CA2456398A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821202A (en) * 2019-11-08 2020-02-21 东南大学 Reinforcing device and reinforcing method for bending compression bar

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771734B2 (en) 2014-09-03 2017-09-26 PermaPole LLC Pole reinforcement system
AU2017234372B2 (en) * 2016-03-15 2022-07-14 Andrew Thornton Structural member having paired flanges and web
USD1004798S1 (en) * 2021-01-20 2023-11-14 Versare Solutions, Llc Modular wall frame component
USD991491S1 (en) * 2021-01-20 2023-07-04 Versare Solutions Llc Modular wall frame component

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US426558A (en) * 1890-04-29 George w
US425631A (en) * 1890-04-15 Telephone bell and connection
US991603A (en) * 1910-09-22 1911-05-09 George William Brooks Fireproof beam.
US3342007A (en) * 1964-08-03 1967-09-19 Anthes Imp Ltd Structural member
FR1534075A (en) * 1967-06-16 1968-07-26 Wendel & Cie De Flanged beams or tubular members
US3698224A (en) * 1970-11-16 1972-10-17 Siderurgica Occidental C A Process for the production of steel structural shapes
ATE150990T1 (en) * 1990-09-28 1997-04-15 Tube Technology Pty Ltd INTERLOCKING STRUCTURAL BODIES
GB2387609B (en) * 2002-04-17 2005-09-28 Hadley Ind Plc Security fencing
US6796101B2 (en) * 2002-10-02 2004-09-28 Yuan-Kuan Chen Metal tubes for guardrail

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821202A (en) * 2019-11-08 2020-02-21 东南大学 Reinforcing device and reinforcing method for bending compression bar
CN110821202B (en) * 2019-11-08 2021-04-27 东南大学 Reinforcing device and reinforcing method for bending compression bar

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EEER Examination request
FZDE Discontinued