REPAIR AND REINFORCEMENT OF UTILITY POLES
Disclosed is a method and system for the repair and reinforcement of poles.
The field of the invention relates generally to the repair and reinforcement of utility poles.
BACKGROUND OF THE INVENTIONUtility poles are generally subject to corrosion and mechanical damage over time.
SUMMARY OF THE INVENTIONEmbodiments of the invention may therefore comprise a method of providing support for a pole, the pole comprising a pole shaft and a structural base support enabled to engage one or more anchor bolts, the method comprising inserting a first repair sleeve over one or more of the anchor bolts so that an inside surface of the first repair sleeve nearly abuts the pole shaft of the pole, the first repair sleeve comprising a shaped wall portion, a plurality of flanges connected to the shaped wall portion and a base portion comprising a hole connected to the shaped wall portion and the plurality of flanges, inserting a second repair sleeve over one or more of the anchor bolts so that an inside surface of the second repair sleeve nearly abuts the pole shaft of the pole, the second repair sleeve comprising a shaped wall portion, a plurality of flanges connected to the shaped wall portion and a base portion comprising a hole connected to the shaped wall portion and the plurality of flanges, tightening one or more structural nuts over the one or more anchor bolts over which the first repair sleeve was inserted, tightening one or more structural nuts over the one or more anchor bolts over which the second repair sleeve was inserted, and connecting one of the plurality of flanges of the first repair sleeve to one of the plurality of flanges to the second repair sleeve.
Embodiments of the invention may further comprise a pole reinforcement system comprising a plurality of repair sleeves, wherein each of the plurality of repair sleeves comprises a shaped wall, a first flange comprising one or more access holes, a second flange one or more access holes and a base portion comprising one or more structural bolt openings.
Embodiments of the invention provide a repair and reinforcement method and system for poles. Specifically, the method may be used with utility poles. Over time, poles, and specifically utility poles, may be subject to conditions that effectively degrade the poles at various locations. The degradation, and deterioration, of poles may lead to weakened mechanisms. The degradation and deterioration may be a result of corrosion due to the elements and mechanical damage experienced by the pole. The degradation of the poles leads to a weakening of the integrity of the poles. Weakened poles present a public danger and may present a significant cost to local entities burdened with replacement of the poles.
Often, but not always, the deterioration of a pole occurs in the lower portion of the pole. Those skilled in the art will recognize that the lower portion of the pole may also be the portion of the pole that is the most highly stressed environmentally and structurally by various conditions, including winds and rain. It is understood that the ability of a pole to withstand structural and mechanical loading conditions may be variously affected by these environmental and event based stresses, such as physical damage due to an automobile. The deterioration of a pole may progress to the point where the condition of the pole requires replacement or repair. Replacement of a pole entails removing the existing pole, installing an entirely new pole and handling all of the ancillary matters associated with the pole, such as wires and connections to other poles and devices. Accordingly, replacement of a pole is expensive. The expense includes both time and money. Further, replacement of the pole, where the majority of the deterioration is localized near the base of the pole, entails discarding the remainder of the pole which is in good working condition. Embodiments of the invention provide a method and system for repair and reinforcement of a pole in order to strengthen a deteriorated pole and thereby extend the life of the pole.
The wall portion 210 is preferably shaped to accommodate the shape of a pole in need of repair. The shaping of the wall portion 210 may be accomplished by any suitable means. The wall portion 210 may be bent or forged in a specific shape. Those skilled in the art will understand suitable means to provide shape to a wall portion 210. The first and second flanges 220, 230 extend from the wall portion radially from a center position. In some embodiments of the invention, the flanges may extend outward from the surface of the pole non-radially. When a repair sleeve 200 is engaged with a pole, along with one or more other repair sleeves, the flanges 220, 230 will radiate from the surface of the pole. The flanges 220, 230 may be of one piece with the wall portion 210 and may be the result of stamping. The flanges 220, 230 may also be welded or otherwise connected to the wall portion 210. Those skilled in the art will understand the multiple ways in which the wall portion 210 and the flanges 220, 230 can be connected. The wall portion 210 and flanges 220, 230 are connected to the base portion in a substantially perpendicular configuration. It is understood that other than perpendicular may be utilized in the case where a pole does not engage with a support structure in a perpendicular manner. However, it is understood that a pole and a support structure generally engage substantially, or near, perpendicular. The base portion 250 may be connected to the wall portion 210 by welding. The base portion 250 may also be connected to the wall portion 210 in a tongue and groove arrangement (not shown). A tongue and groove arrangement may comprise interlocking teeth that engage each other to form a connection. The entire section may also be may be forged or stamped from a single piece. The flanges 220, 230 are welded to the base portion 250. The flanges 220, 230 are wide enough, from the connection point with the wall portion 210 to the outer edge of the flange 220, 230 to provide structural base support and to provide space for stitch bolts. The wall portion 210 and flanges 220, 230 may be of a different thickness than the base portion 250. The wall portion 210 and flanges 220,230 may also be of different thicknesses. The wall portion 210 and flanges 220, 230 may be a quarter of an inch (¼″) and the base portion 250 may be three quarters of an inch (¾″), for example. The thickness may vary. Any thickness for the wall portion 210, flanges 220, 230 and base portion 250 may be used to provide support to a pole.
In an embodiment of the invention, the repair sleeve may comprise a wall portion (such as wall portion 210 in
In
As shown in the Figures, an embodiment of the invention is a repair sleeve that is assembled in four sections,
The repair sleeve may be comprised of a metal or a composite material. The repair sleeve may be uncoated, galvanized, painted, galvanized and painted, powder coated or covered with another coating system as understood in the art.
An embodiment of the invention is a repair sleeve comprised of a wall portion and flanges and a base portion connected thereto. The repair sleeve may be fabricated from a single formed piece of uniform thickness or of varying thickness. Those skilled in the art will understand the methods of materials fabrication suitable for fabricating an appropriate repair sleeve.
Embodiments of the invention comprise flexible, gaskets/pads/cushions made of durable water, chemical and UV resistant material. These may include rubber and polymer. These materials may be designed to cushion the interface between the inner portion of the sleeve and the surfaces of the pole. As noted in regard to
Embodiments of the invention may utilize sealants between the sleeve and pole. Embodiments may also utilize sleeve covers.
As noted in regard to the figures, pieces of the repair sleeve may be manufactured to accommodate a range of pole diameters and shapes. Also, embodiments of the invention may include a variety of patterns and numbers of stitch bolt holes and stitch bolts as well as slots or other receiving mechanism. Embodiments may include repair sleeves that vary in height to accommodate larger damage.
Embodiments of the invention may include a slot in the base portion. Embodiments may include a repair sleeve designed with holes or slots that are larger than the existing structural nuts used to anchor a pole to the structural base support. The nut could be backed off or removed and a washer, or plate, could be installed that bridges the gap and then the nut could be tightened against bridging element. Sleeves with fewer parts can also be installed if the sleeve's base portion incorporates holes, or slots that can be installed over the existing nuts anchoring the pole to the foundation system.
Some embodiments of the invention may include decorative sleeves.
A method of installing a plurality of repair sleeves may include one or more of the following steps:
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- 1. Removing one of the plurality of structural nuts that generally attach to a pole assembly. The surfaces may be cleaned of rust and dirt with any suitable means. The visible threads of the anchor bolt may be coated with a corrosion inhibiting paste, or other material. A corrosion coating may be applied to the pole shaft and base support. Those skilled in the art will understand appropriate corrosion coatings and application.
- 2. Installing one section of a repair sleeve over the anchor bolt. Note, that if a 180 degree repair sleeve is utilized, that step 1 will entail two structural nuts and step 2 will entail installing one section of a repair sleeve over two anchor bolts.
- 3. Tightening the anchor nut back in place over the base portion of the repair sleeve. This may include a washer or plate placed over the anchor bolt and under the anchor nut.
- 4. Repeating step 1 and step 2 for one or more anchor bolts and repair sleeves.
- 5. Installing and loosely tightening a plurality of stitch bolts through stitch holes (this may be handing or other connection mechanism as described herein) of the sections of the repair sleeves being joined.
- 6. Steps are repeated until the pole is entirely engaged with repair sleeves.
- 7. If stitch bolts are used, tightening the stitch bolts in a cross pattern. A torque wrench may be used to avoid over, or under, tightening of the stitch bolts.
- 8. Tighten all anchor nuts to a specified torque.
Embodiments of the invention may include a cutout in the wall portion. The cutout is used to go over existing hand access points in pole shafts. The access points provide maintenance staffs, and others, access to the interior of pole shafts. The cutout in the wall portion may be sized appropriately for a particular access point in a pole shaft. In some embodiments, the access points may be oversized to provide an opening in the wall portion of a repair sleeve that may accommodate a variety of differently sized access points in different pole shafts. It is noted that a cutout is different than an access hole in a flange. The access holes in a flange may accommodate stitch bolts or bands for tightening a plurality of repair sleeves together. The cutout is in the wall portion of the repair sleeve.
The foregoing description of the invention has been presented for purposes of illustration and description, it is not intended to be exhaustive or to limit the invention to the precise form disclosed, and other modifications and variations may be possible in light of the above teachings. The embodiment was chosen and described in order to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best utilize the invention in various embodiments and various modifications as are suited to the particular use contemplated. It is intended that the appended claims be construed to include other alternative embodiments of the invention except insofar as limited by the prior art.
Claims
1. A method of providing support for a pole, said pole comprising a pole shaft and a pole structural base support portion enabled to engage one or more anchor bolts, said method comprising:
- inserting a first repair sleeve over one or more of said anchor bolts so that an inside surface of said first repair sleeve nearly abuts said pole shaft of said pole, said first repair sleeve comprising a shaped wall portion, a plurality of flanges connected to said shaped wall portion and a base portion comprising a hole connected to said shaped wall portion and said plurality of flanges;
- inserting a second repair sleeve over one or more of said anchor bolts so that an inside surface of said second repair sleeve nearly abuts said pole shaft of said pole, said second repair sleeve comprising a shaped wall portion, a plurality of flanges connected to said shaped wall portion and a base portion comprising a hole connected to said shaped wall portion and said plurality of flanges;
- tightening one or more structural nuts over said one or more anchor bolts over which said first repair sleeve was inserted;
- tightening one or more structural nuts over said one or more anchor bolts over which said second repair sleeve was inserted; and
- connecting one of said plurality of flanges of said first repair sleeve to one of said plurality of flanges to said second repair sleeve.
2. The method of claim 1, wherein said plurality flanges of said first repair sleeve comprise a plurality of stitch bolt holes, said plurality of flanges of said second repair sleeve comprise a plurality of stitch bolt holes and said process of connecting one of said plurality of flanges of said first repair sleeve to one of said plurality of flanges to said second repair sleeve comprises installing and tightening a plurality of stitch bolts through said stitch bolt holes of said first repair sleeve and said stitch bolt holes of said second repair sleeve.
3. The method of claim 1, wherein said plurality of flanges of said first repair sleeve comprise one or more slots, said plurality of flanges of said second repair sleeve comprise one or more slots and wherein said process of connecting comprises threading a band through one of said slots of said one of said plurality of flanges of said first repair sleeve and through one of said slots of said one of said plurality of flanges of said second repair sleeve and tightening said band.
4. The method of claim 1, wherein said process of connecting comprises applying an adhesive between said wall portion of said first repair sleeve and said pole shaft and between said wall portion of said second repair sleeve and said pole shaft.
5. The method of claim 1, wherein said process of connecting comprises interlockingly engaging said one of said plurality of flanges of said first repair sleeve and one of said plurality of flanges to said second repair sleeve.
6. The method of claim 1, wherein said first repair sleeve comprising a shaped wall portion, a plurality of flanges connected to said shaped wall portion and a base portion comprising a hole connected to said shaped wall portion and said plurality of flanges is comprised of a galvanized metal and said second repair sleeve comprising a shaped wall portion, a plurality of flanges connected to said shaped wall portion and a base portion comprising a hole connected to said shaped wall portion and said plurality of flanges is comprised of a galvanized metal.
7. The method of claim 1, wherein said first repair sleeve comprises a singular piece of material and said second repair sleeve comprises a singular piece of metal.
8. The method of claim 1, wherein said first repair sleeve further comprises a first gap at the connection between said shaped wall and said base portion and said second repair sleeve further comprises a second gap at the connection between said shaped wall and said base portion.
9. The method of claim 1, wherein said first repair sleeve further comprises one or more cushioning pieces placed on an inner face of said shaped wall of said first repair sleeve and one or more cushioning pieces placed on an inner face of said shaped wall of said second repair sleeve.
10. A pole reinforcement system comprises a plurality of repair sleeves, wherein each of said plurality of repair sleeves comprises a shaped wall, a first flange comprising one or more access holes, a second flange one or more access holes and a base portion comprising one or more structural bolt openings.
11. The pole reinforcement system of claim 10 further comprising at least one flexible stress absorption pad, wherein said flexible stress absorption pad is adhered to an inside face of said shaped wall.
12. The pole reinforcement system of claim 10 further comprising a gap at a connection point between said shaped wall and said base portion.
13. The pole reinforcement system of claim 10 wherein said structural bolt opening is a hole.
14. The pole reinforcement system of claim 10 wherein said structural bolt opening is a slat.
15. The pole reinforcement system of claim 10 wherein said shaped wall, said first flange comprising one or more access holes, said second flange comprising one or more access holes and said base portion are comprised of a singular piece of material.
16. The pole reinforcement system of claim 15, wherein said material is galvanized metal.
17. The pole reinforcement system of claim 15, wherein said material comprises a carbon fiber.
18. The pole reinforcement system of claim 15, wherein said material comprises a composite material.
19. The pole reinforcement system of claim 10 wherein said shaped wall, said first flange comprising one or more access holes and said second flange comprising one or more access holes is comprised of a singular piece of material and said singular piece of material is connected to said base portion.
20. The pole reinforcement system of claim 10 wherein said shaped wall, said first flange and said second flange are a first thickness and said base portion is a second thickness.
21. The pole reinforcement system of claim 10 further comprising one or more stitch bolts sized to said access holes in said first flange and said access holes in said second flange.
22. The pole reinforcement system of claim 10 wherein said access holes of said first flange and said access holes of said second flange are slots enabled to accept a tightening band.
23. The pole reinforcement system of claim 10 wherein each of said first and said second flanges of each of said plurality of repair sleeves is interlockably connectable with a flange of another of said plurality of repair sleeves.
24. The pole reinforcement system of claim 10 wherein each of said first and said second flanges of each of said plurality of repair sleeves in hingeably connectable with a flange of another of said plurality of repair sleeves.
25. The pole reinforcement system of claim 10, wherein said shaped wall of one of said plurality of repair sleeves comprises a cutout.
26. A method of reinforcing a pole, said pole comprising a pole shaft and a pole structural base support portion enabled to engage one or more anchor bolts, said method comprising:
- inserting a first repair sleeve over one or more of said anchor bolts so that an inside surface of said first repair sleeve nearly abuts said pole shaft of said pole, said first repair sleeve comprising a shaped wall portion and a base portion comprising a hole connected to said shaped wall portion;
- inserting a second repair sleeve over one or more of said anchor bolts so that an inside surface of said second repair sleeve nearly abuts said pole shaft of said pole, said second repair sleeve comprising a shaped wall portion and base portion comprising a hole connected to said shaped wall portion;
- tightening one or more structural nuts over said one or more anchor bolts over which said first repair sleeve was inserted;
- tightening one or more structural nuts over said one or more anchor bolts over which said second repair sleeve was inserted; and
- tightening said first repair sleeve and said second repair sleeve to said pole section.
27. The method of claim 26, said method further comprising applying a corrosion inhibiting coating to said pole shaft.
28. The method of claim 26, wherein said method further comprises applying an adhesive between said wall portion of said first repair sleeve and said pole shaft and between said wall portion of said second repair sleeve and said pole shaft.
29. The method of claim 26, wherein said first repair sleeve comprises a singular piece of material and said second repair sleeve comprises a singular piece of metal.
30. The method of claim 26, wherein said first repair sleeve further comprises a first gap at the connection between said shaped wall and said base portion and said second repair sleeve further comprises a second gap at the connection between said shaped wall and said base portion.
31. The method of claim 26, wherein said first repair sleeve further comprises one or more cushioning pieces placed on an inner face of said shaped wall of said first repair sleeve and one or more cushioning pieces placed on an inner face of said shaped wall of said second repair sleeve.
Type: Application
Filed: Sep 1, 2015
Publication Date: Mar 3, 2016
Inventors: Richie Tedesco (Fort Collins, CO), Andy Stewart (Fort Collins, CO), Steve Chapman (Fort Collins, CO)
Application Number: 14/842,462