US20130227897A1 - Truss-Based Monopole Support Structure - Google Patents
Truss-Based Monopole Support Structure Download PDFInfo
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- US20130227897A1 US20130227897A1 US13/751,957 US201313751957A US2013227897A1 US 20130227897 A1 US20130227897 A1 US 20130227897A1 US 201313751957 A US201313751957 A US 201313751957A US 2013227897 A1 US2013227897 A1 US 2013227897A1
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- Prior art keywords
- monopole
- secured
- brace element
- joint
- truss assemblies
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/20—Side-supporting means therefor, e.g. using guy ropes or struts
Definitions
- the present invention relates to the field of monopole structures, and more particularly to support systems associated with such structures.
- Monopole structures may be employed for housing or supporting elements such as antennae and other communications equipment, signage, high voltage transmission wires, or lighting in an elevated position. Such structures often include a long, hollow pole structure connected to an underlying surface such as a concrete pad formed in the ground. Such monopole structures are typically subjected to wind or other types of forces along their length, which may cause the structure to bend or sway. These forces create a moment about the base termination, which in turn stresses the base termination location and can lead to fatigue and eventual failure of the base termination material.
- FIG. 1A is a isometric view of a portion of a monopole support structure consistent with embodiment described herein;
- FIG. 1B is an expanded isometric view of the monopole and support structure of FIG. 1 ;
- FIG. 2 is a side view of an exemplary truss element of FIG. 1A ;
- FIG. 3 is a top view of the monopole and support structure of FIG. 1B ;
- FIG. 4 is an isometric view of an exemplary helical pier usable with the support structure of FIGS. 1A-3 .
- a number of truss-based support structures may be used to structurally connect a tubular monopole to a number of helical piers embedded within an environment surface.
- each truss-based support structure may be coupled to the monopole via pin or bolt-based assemblies, thereby allowing the support assembly to adapt to variations in installation parameters, such as angle of inclination of the embedded piers.
- the described system may be employed in environments that are not conducive to the use of concrete or that are not conducive to the impact caused by driving conventional piers or piles.
- the described embodiments may be used to remediate or supplement existing monopole support structures with minimal environmental impact.
- FIG. 1A is an isometric view of a portion of a support structure 100 for supporting a tubular monopole 105 consistent with an embodiment described herein.
- Tubular monopole 105 may include a substantially cylindrical or frusto-conical configuration.
- monopole 105 may be formed of tubular steel or similar material.
- FIG. 1B is an isometric view of tubular monopole 105 showing an overall length of monopole 105 .
- monopole 105 may include a multi-sided configuration, such as a 12-sided (dodecagon) configuration, comprising 12 sides, each having a same width and an angle of approximately 15° relative to each adjacent side.
- monopole 105 may have an extended length relative to its diameter, such length suitable for a given application.
- a monopole for supporting high voltage power lines may be approximately 117 feet long, while a monopole for supporting a traffic signal may be approximately 20-30 feet long.
- Embodiments described herein are suitable for monopole 105 having any particular length.
- monopole support structure 100 may include a plurality of truss assemblies 110 - 1 to 110 - 4 (collectively referred to as “truss assemblies 110 ” and individually as “truss assembly 110 ”) depicted in isometric view in FIG. 1A , one of which is shown in side view in FIG. 2 .
- monopole support structure 100 may include four truss assemblies 110 spaced equidistantly about a perimeter of monopole 105 , e.g., at 90° intervals relative to each other. In other implementations, more or fewer truss assemblies 110 may be used.
- FIG. 2 is a side view of one of truss assemblies 110 and
- FIG. 3 is a top view of monopole support system 100 . Consistent numbering is used throughout, where appropriate.
- each truss assembly 110 may include an angled brace element 112 , a horizontal brace element 114 , joint elements 116 , 118 , and 120 , mounting brackets 122 and 124 , pier bracket 126 , and cross members 128 and 130 .
- Truss assemblies 110 are configured for securing to monopole 105 and a number of helical piers 148 - 1 to 148 - 4 (collectively referred to as “helical piers 148 ” and individually as “helical pier 148 ”).
- helical piers 148 may include a substantially cylindrical body having a number of helical blade-like elements projecting therefrom.
- Helical piers 148 are capable of being drilled into a support surface, such as the ground to support a structure attached thereto. In some instances, a number of helical piers 148 may be linked together to allow driving of the piers 148 to significant depths within the Earth, such as depths of 10 to 60 or more feet. Exemplary helical piers 148 for use in the manner described herein may have lengths of 26 feet, shaft diameters of approximately eight inches, and blade diameters of approximately 24 inches. However, other dimensions may be used, depending on the specific application. Though helical piers are shown, it is understood that the system may include a variety of different micropile and pier systems.
- Angled brace element 112 may include one or more structural elements configured to provide a rigid and supportive connection between monopole 105 and pier bracket 126 via joint elements 116 and 118 . As described in additional detail below, pier bracket 126 may be coupled to helical pier 148 (one of which is shown schematically in FIG. 4 ). As shown in FIG. 1A , in one embodiment, angled brace element 112 includes two lengths of angle steel (denoted as elements 112 - a and 112 - b in FIG. 1A ) joined (e.g., welded) to opposing portions of joint elements 116 and 118 .
- angle steel 112 - a and 112 - b may be joined to each other (e.g., welded) along their lengths for extra support and rigidity.
- other types of steel or other rigid material
- HSS hollow structural section
- tubular steel etc.
- eight-sided tubular steel may be used for brace elements 112 and 114 and/or cross members 128 / 130 .
- a length of angled brace element 112 may be determined based on a positioning of helical piers 148 relative to monopole 105 , such that a desired angle may be maintained with respect to horizontal. For example, an angle of 45° may be desired for angled brace element 112 with respect to horizontal upon coupling with monopole 105 .
- deviations from this angle may be possible due to the adjustable nature of joint mounting brackets 122 and 124 , and pier bracket 126 , described in detail below.
- Horizontal brace element 114 may include additional structural elements to provide a rigid and supportive connection between monopole 105 and pier bracket 126 via joint elements 118 and 120 .
- horizontal brace element 114 may include two lengths of angle steel (denoted as elements 114 - a and 114 - b in FIG. 1A ) joined (e.g., welded) to opposing portions of joint elements 118 and 120 .
- other types of steel or other rigid material
- a length of horizontal brace element 114 (shown as “L 2 ” in FIG. 2 ) may also be determined based on a positioning of helical piers 148 relative to monopole 105 .
- joint elements 116 and 118 may be secured, such as via welding, to opposing ends of angled brace element 112 .
- joint elements 116 and 118 may be formed of steel or another rigid material.
- Joint element 116 may be secured to an upper end of angled brace element 112 and may have a four or five-sided configuration having a mounting aperture 127 formed therethrough. As described in detail below, mounting aperture 127 may align with a corresponding hole 129 in mounting bracket 122 upon assembly of truss assembly 110 to monopole 105 .
- joint element 116 may include an angled or curved configuration, thereby allowing joint element 116 and angled brace element 112 to pivot or move with respect to monopole 105 following assembly.
- Mounting bracket 122 may be formed of one or more rigid elements and may be secured to an outside surface of monopole 105 .
- mounting bracket 122 may include a pair of bracket members 123 and a mounting plate 125 . This embodiment may also be referred to as a “doubler”.
- Bracket members 123 may be secured (e.g., welded, bolted, etc.) to mounting plate 125 , such that bracket members 123 extend substantially perpendicularly from mounting plate 125 .
- bracket members 123 may be spaced parallel from each other by a width substantially similar to a thickness of joint element 116 , thereby enabling the end of joint element 116 to be received between bracket members 123 .
- mounting plate 123 may include an angled or beveled surface, thereby allowing mounting plate to conform to an outer configuration of monopole 105 .
- joint element 116 may be inserted between bracket members 123 , and aperture 127 in joint element 116 may be aligned with hole 129 in bracket members 123 .
- a bolt or pin 134 as shown in FIG. 1A , may be received through aperture 127 and hole 129 and may be secured via nut 135 , as shown in FIG. 3 .
- Joint element 118 may be secured to a lower end of angled brace element 112 and may include a joint portion 136 and a flange portion 138 . As shown, joint portion 136 may be further configured to secure to a first end 140 of horizontal brace element 114 in addition to the lower end of angled brace element 112 . More specifically, horizontal brace element 114 and angled brace element 112 may be fixed to joint element 118 in a desired relative angle, such as a 45° angle. In addition, as shown in FIG. 1A , flange portion 138 may extend substantially perpendicularly from a lower end of joint portion 136 and may form a base for receiving pier bracket 126 .
- a width of flange portion 138 may be slightly larger than an outside diameter or maximum outer dimension of pier bracket 126 .
- Pier bracket 126 may be fixed to flange portion 138 via welding, for example. In other embodiments, pier bracket 126 may be co-formed with joint element 118 (e.g., via casting, molding, etc.).
- joint element 120 may be secured to a second end 142 of horizontal brace element 114 .
- Joint element 120 may include a four or five-sided configuration having a mounting aperture 144 formed therethrough, as shown in FIG. 2 .
- mounting aperture 144 may align with a corresponding hole 145 in mounting bracket 124 upon assembly of truss assembly 110 to monopole 105 .
- Mounting bracket 124 may be formed substantially similar to mounting bracket 122 and may be formed from one or more rigid elements secured to an outside surface of monopole 105 .
- mounting bracket 124 may include bracket members 123 and mounting plate 125 .
- mounting bracket 124 may be vertically aligned with mounting bracket 122 .
- joint element 120 may be inserted between bracket members 123 , and aperture 144 in joint element 120 may be aligned with hole 145 in bracket members 123 .
- Bolt 134 is received within aperture 144 and hole 145 and may be secured via nut 135 .
- Cross members 128 and 130 may be formed of a rigid material and may have lengths dictated by a desired geometry of truss assembly 110 .
- cross member 128 may have a length (shown as “L 3 ” in FIG. 2 ) configured to provide a vertical (e.g., 90° relative to horizontal brace element 114 ) interconnect between an intermediate portion of angled brace element 112 and an intermediate portion of horizontal brace element 114 .
- cross member 130 may have a length (shown as “L 4 ” in FIG. 2 ) configured to provide an angled (e.g., approx. 45° relative to horizontal brace element 114 ) interconnect between the intermediate portion of angled brace element 112 and an end of horizontal brace element 114 .
- cross members 128 and 130 may be formed of more than one member (e.g., two, paired members, etc.).
- Cross members 128 and 130 may be secured to angled and horizontal brace elements 112 and 114 via welding.
- brace elements 112 and 114 comprise pairs of structural elements (e.g., elements 112 - a / 112 - b or 114 - a / 114 - b )
- one of cross members 128 and 130 may be welded between each member in the pair and the other of cross members 128 and 130 may be welded outside of each member in the pair. For example, as shown in FIG.
- one end of cross member 128 may be welded between the elements 112 - a and 112 - b of angled brace element 112 and the other end of cross member 128 may be welded between the elements 114 - a and 114 - b of horizontal brace element 114 .
- the two members of cross member 130 may be welded to the outside of angled brace element 112 and horizontal brace element 114 .
- joint member 118 may be configured to support pier bracket 126 .
- pier bracket 126 may comprise a substantially tubular member having an inside diameter substantially similar to an outside diameter of an exposed end 146 of helical pier 148 .
- Pier bracket 126 may include holes 149 for aligning with holes in an end of helical pier 148 , as described below.
- FIG. 4 is an isometric view of one of helical piers 148 .
- helical pier 148 includes a shaft portion 150 and a number of auger or blade portions 152 .
- An operating end 154 of shaft portion 150 may include a pointed end for enabling pier 148 to more easily penetrate the Earth during installation.
- a retaining end 156 of shaft portion 150 may include retaining apertures 155 . Following insertion of helical pier 148 into the Earth to a desired or predetermined depth, retaining end 156 may project from the Earth by a set amount.
- helical piers 148 may be inserted into the Earth at locations radially aligned with mounting brackets 122 and 124 .
- Pier bracket 126 may be aligned with retaining end 156 and retaining apertures 155 may be aligned with holes 149 in pier bracket 126 . In some instances, it may be necessary to rotate helical pier 148 to bring apertures 155 into alignment with holes 149 . A pin 158 may be received through apertures 155 and holes 149 to secure pier bracket 126 to helical pier 148 . In other embodiments, pin 158 may be secured via other mechanisms, such as snap rings, nuts, clips, etc.
- field assembly may be more easily managed. For example, it is not necessary for installers to weld items together in the field. Rather, pre-constructed truss assemblies 110 may be brought into the field and secured to monopole 105 and helical piers 148 using easily portable tools.
- an additional helical pier 148 - 5 may be mounted beneath a center of monopole 105 .
- a pier bracket (not shown) similar to pier bracket 126 may be welded or otherwise secured to a center of the bottom of monopole 105 .
- helical pier 148 - 5 may be driven into a location corresponding to the center of monopole 105 .
- the helical pier 148 - 5 may be aligned with the center pier bracket and secured in a manner similar to that described above with respect to piers 148 - 1 to 148 - 4 .
- additional helical piers may be installed and secured to truss assemblies 110 .
- one or more additional pier brackets may be secured to a bottom surface of horizontal brace element 114 .
- Additional helical piers may be driven corresponding to the locations of each additional pier bracket.
- the additional piers may be able to support longer monopoles having longer lengths or monopoles positioned in potentially less stable environments.
- helical piers are shown in the embodiments, it is understood that the system may include a variety of different micropile and pier systems.
- embodiments described herein may provide an efficient and environmentally sensitive alternative to existing monopole support systems. More particularly, helical piers may be driven into the ground surrounding a monopole with minimal environment impact. The above-described truss assemblies may be secured to both the helical piers and the monopole to provide an effective support system with minimal impact and cost.
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Abstract
Description
- This application claims priority under 35 U.S.C. §119, based on U.S. Provisional Patent Application No. 61/605,534, filed Mar. 1, 2012, the disclosure of which is hereby incorporated by reference herein.
- The present invention relates to the field of monopole structures, and more particularly to support systems associated with such structures.
- Monopole structures may be employed for housing or supporting elements such as antennae and other communications equipment, signage, high voltage transmission wires, or lighting in an elevated position. Such structures often include a long, hollow pole structure connected to an underlying surface such as a concrete pad formed in the ground. Such monopole structures are typically subjected to wind or other types of forces along their length, which may cause the structure to bend or sway. These forces create a moment about the base termination, which in turn stresses the base termination location and can lead to fatigue and eventual failure of the base termination material.
- Conventional monopole structures are often rigidly connected to the ground via direct embedment, or via concrete base plates, via concrete encased anchor bolts, or via drilled, concrete filled caissons. Unfortunately, each of these support structures can be expensive and can raise environment concerns.
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FIG. 1A is a isometric view of a portion of a monopole support structure consistent with embodiment described herein; -
FIG. 1B is an expanded isometric view of the monopole and support structure ofFIG. 1 ; -
FIG. 2 is a side view of an exemplary truss element ofFIG. 1A ; -
FIG. 3 is a top view of the monopole and support structure ofFIG. 1B ; and -
FIG. 4 is an isometric view of an exemplary helical pier usable with the support structure ofFIGS. 1A-3 . - The following detailed description refers to the accompanying drawings. The same reference numbers in different drawings may identify the same or similar elements.
- Consistent with implementations described herein, a number of truss-based support structures may be used to structurally connect a tubular monopole to a number of helical piers embedded within an environment surface. As described below, each truss-based support structure may be coupled to the monopole via pin or bolt-based assemblies, thereby allowing the support assembly to adapt to variations in installation parameters, such as angle of inclination of the embedded piers. In contrast to existing monopole support systems using concrete base plates, concrete encased anchor bolts, or via drilled, concrete filled caissons, the described system may be employed in environments that are not conducive to the use of concrete or that are not conducive to the impact caused by driving conventional piers or piles. In addition, the described embodiments may be used to remediate or supplement existing monopole support structures with minimal environmental impact.
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FIG. 1A is an isometric view of a portion of asupport structure 100 for supporting atubular monopole 105 consistent with an embodiment described herein.Tubular monopole 105 may include a substantially cylindrical or frusto-conical configuration. In some implementations,monopole 105 may be formed of tubular steel or similar material.FIG. 1B is an isometric view oftubular monopole 105 showing an overall length ofmonopole 105. In some implementations, as shown inFIGS. 1A and 1B ,monopole 105 may include a multi-sided configuration, such as a 12-sided (dodecagon) configuration, comprising 12 sides, each having a same width and an angle of approximately 15° relative to each adjacent side. - In addition, as shown in
FIG. 1B ,monopole 105 may have an extended length relative to its diameter, such length suitable for a given application. For example, a monopole for supporting high voltage power lines may be approximately 117 feet long, while a monopole for supporting a traffic signal may be approximately 20-30 feet long. Embodiments described herein are suitable formonopole 105 having any particular length. - Consistent with implementations described herein,
monopole support structure 100 may include a plurality of truss assemblies 110-1 to 110-4 (collectively referred to as “truss assemblies 110” and individually as “truss assembly 110”) depicted in isometric view inFIG. 1A , one of which is shown in side view inFIG. 2 . In an exemplary implementation,monopole support structure 100 may include four truss assemblies 110 spaced equidistantly about a perimeter ofmonopole 105, e.g., at 90° intervals relative to each other. In other implementations, more or fewer truss assemblies 110 may be used.FIG. 2 is a side view of one of truss assemblies 110 andFIG. 3 is a top view ofmonopole support system 100. Consistent numbering is used throughout, where appropriate. - As shown, each truss assembly 110 may include an
angled brace element 112, ahorizontal brace element 114,joint elements mounting brackets pier bracket 126, andcross members monopole 105 and a number of helical piers 148-1 to 148-4 (collectively referred to as “helical piers 148” and individually as “helical pier 148”). As described in additional detail below,helical piers 148 may include a substantially cylindrical body having a number of helical blade-like elements projecting therefrom.Helical piers 148 are capable of being drilled into a support surface, such as the ground to support a structure attached thereto. In some instances, a number ofhelical piers 148 may be linked together to allow driving of thepiers 148 to significant depths within the Earth, such as depths of 10 to 60 or more feet. Exemplaryhelical piers 148 for use in the manner described herein may have lengths of 26 feet, shaft diameters of approximately eight inches, and blade diameters of approximately 24 inches. However, other dimensions may be used, depending on the specific application. Though helical piers are shown, it is understood that the system may include a variety of different micropile and pier systems. -
Angled brace element 112 may include one or more structural elements configured to provide a rigid and supportive connection betweenmonopole 105 andpier bracket 126 viajoint elements pier bracket 126 may be coupled to helical pier 148 (one of which is shown schematically inFIG. 4 ). As shown inFIG. 1A , in one embodiment,angled brace element 112 includes two lengths of angle steel (denoted as elements 112-a and 112-b inFIG. 1A ) joined (e.g., welded) to opposing portions ofjoint elements brace elements cross members 128/130. - A length of angled brace element 112 (shown as “L1” in
FIG. 2 ) may be determined based on a positioning ofhelical piers 148 relative tomonopole 105, such that a desired angle may be maintained with respect to horizontal. For example, an angle of 45° may be desired forangled brace element 112 with respect to horizontal upon coupling withmonopole 105. However, it should be noted that deviations from this angle may be possible due to the adjustable nature ofjoint mounting brackets pier bracket 126, described in detail below. -
Horizontal brace element 114 may include additional structural elements to provide a rigid and supportive connection betweenmonopole 105 andpier bracket 126 viajoint elements FIG. 1A , in one embodiment,horizontal brace element 114 may include two lengths of angle steel (denoted as elements 114-a and 114-b inFIG. 1A ) joined (e.g., welded) to opposing portions ofjoint elements horizontal brace element 112, a length of horizontal brace element 114 (shown as “L2” inFIG. 2 ) may also be determined based on a positioning ofhelical piers 148 relative tomonopole 105. - As shown in
FIG. 2 ,joint elements angled brace element 112. In one embodiment,joint elements Joint element 116 may be secured to an upper end ofangled brace element 112 and may have a four or five-sided configuration having a mountingaperture 127 formed therethrough. As described in detail below, mountingaperture 127 may align with acorresponding hole 129 in mountingbracket 122 upon assembly of truss assembly 110 tomonopole 105. - Although not shown in the Figures, an upper portion of
joint element 116 may include an angled or curved configuration, thereby allowingjoint element 116 andangled brace element 112 to pivot or move with respect tomonopole 105 following assembly. - Mounting
bracket 122 may be formed of one or more rigid elements and may be secured to an outside surface ofmonopole 105. In one embodiment, mountingbracket 122 may include a pair ofbracket members 123 and a mountingplate 125. This embodiment may also be referred to as a “doubler”.Bracket members 123 may be secured (e.g., welded, bolted, etc.) to mountingplate 125, such thatbracket members 123 extend substantially perpendicularly from mountingplate 125. In addition,bracket members 123 may be spaced parallel from each other by a width substantially similar to a thickness ofjoint element 116, thereby enabling the end ofjoint element 116 to be received betweenbracket members 123. In implementations in which monopole 105 comprises a dodecagon or other multi-faceted or multi-sided configuration, mountingplate 123 may include an angled or beveled surface, thereby allowing mounting plate to conform to an outer configuration ofmonopole 105. By providing a doubler configuration for supportingangled brace element 112, through plates extending throughmonopole 105 may be unnecessary, thereby increasing the ease of assembly and reducing both the cost and complexity ofmonopole support system 100. - As shown in
FIG. 2 , during assembly of truss assembly 110, the exposed end ofjoint element 116 may be inserted betweenbracket members 123, andaperture 127 injoint element 116 may be aligned withhole 129 inbracket members 123. A bolt orpin 134, as shown inFIG. 1A , may be received throughaperture 127 andhole 129 and may be secured vianut 135, as shown inFIG. 3 . By providing a bolt on assembly for truss assembly 110, field installation is made possible without requiring welding, thereby increasing the speed and efficiency with which the installation may be made. -
Joint element 118 may be secured to a lower end ofangled brace element 112 and may include ajoint portion 136 and aflange portion 138. As shown,joint portion 136 may be further configured to secure to afirst end 140 ofhorizontal brace element 114 in addition to the lower end ofangled brace element 112. More specifically,horizontal brace element 114 andangled brace element 112 may be fixed tojoint element 118 in a desired relative angle, such as a 45° angle. In addition, as shown inFIG. 1A ,flange portion 138 may extend substantially perpendicularly from a lower end ofjoint portion 136 and may form a base for receivingpier bracket 126. In one embodiment, a width offlange portion 138 may be slightly larger than an outside diameter or maximum outer dimension ofpier bracket 126.Pier bracket 126 may be fixed toflange portion 138 via welding, for example. In other embodiments,pier bracket 126 may be co-formed with joint element 118 (e.g., via casting, molding, etc.). - As described briefly above,
joint element 120 may be secured to asecond end 142 ofhorizontal brace element 114.Joint element 120 may include a four or five-sided configuration having a mountingaperture 144 formed therethrough, as shown inFIG. 2 . As described in detail below, mountingaperture 144 may align with acorresponding hole 145 in mountingbracket 124 upon assembly of truss assembly 110 tomonopole 105. - Mounting
bracket 124 may be formed substantially similar to mountingbracket 122 and may be formed from one or more rigid elements secured to an outside surface ofmonopole 105. For example, mountingbracket 124 may includebracket members 123 and mountingplate 125. As shown inFIG. 1A , mountingbracket 124 may be vertically aligned with mountingbracket 122. - During assembly of truss assembly 110, the exposed end of
joint element 120 may be inserted betweenbracket members 123, andaperture 144 injoint element 120 may be aligned withhole 145 inbracket members 123.Bolt 134 is received withinaperture 144 andhole 145 and may be secured vianut 135. -
Cross members cross member 128 may have a length (shown as “L3” inFIG. 2 ) configured to provide a vertical (e.g., 90° relative to horizontal brace element 114) interconnect between an intermediate portion ofangled brace element 112 and an intermediate portion ofhorizontal brace element 114. Similarly,cross member 130 may have a length (shown as “L4” inFIG. 2 ) configured to provide an angled (e.g., approx. 45° relative to horizontal brace element 114) interconnect between the intermediate portion ofangled brace element 112 and an end ofhorizontal brace element 114. In other implementations, alternative geometry may be used, including additional cross members, different angles, etc. In some embodiments, as shown inFIG. 1A , one or more ofcross members -
Cross members horizontal brace elements brace elements cross members cross members FIG. 1A , one end ofcross member 128 may be welded between the elements 112-a and 112-b ofangled brace element 112 and the other end ofcross member 128 may be welded between the elements 114-a and 114-b ofhorizontal brace element 114. In this embodiment, the two members ofcross member 130 may be welded to the outside ofangled brace element 112 andhorizontal brace element 114. - As described briefly above,
joint member 118 may be configured to supportpier bracket 126. As shown inFIG. 1A ,pier bracket 126 may comprise a substantially tubular member having an inside diameter substantially similar to an outside diameter of anexposed end 146 ofhelical pier 148.Pier bracket 126 may includeholes 149 for aligning with holes in an end ofhelical pier 148, as described below. -
FIG. 4 is an isometric view of one ofhelical piers 148. As shown,helical pier 148 includes ashaft portion 150 and a number of auger orblade portions 152. An operatingend 154 ofshaft portion 150 may include a pointed end for enablingpier 148 to more easily penetrate the Earth during installation. A retainingend 156 ofshaft portion 150 may include retainingapertures 155. Following insertion ofhelical pier 148 into the Earth to a desired or predetermined depth, retainingend 156 may project from the Earth by a set amount. As shown inFIGS. 1A and 1B ,helical piers 148 may be inserted into the Earth at locations radially aligned with mountingbrackets Pier bracket 126 may be aligned with retainingend 156 and retainingapertures 155 may be aligned withholes 149 inpier bracket 126. In some instances, it may be necessary to rotatehelical pier 148 to bringapertures 155 into alignment withholes 149. Apin 158 may be received throughapertures 155 andholes 149 to securepier bracket 126 tohelical pier 148. In other embodiments, pin 158 may be secured via other mechanisms, such as snap rings, nuts, clips, etc. - By providing pin or bolt-type securing of truss assemblies 110 to both
monopole 105 andhelical pier 148, field assembly may be more easily managed. For example, it is not necessary for installers to weld items together in the field. Rather, pre-constructed truss assemblies 110 may be brought into the field and secured to monopole 105 andhelical piers 148 using easily portable tools. - In some embodiments, as shown in
FIGS. 1A and 1B , an additional helical pier 148-5 may be mounted beneath a center ofmonopole 105. For example, a pier bracket (not shown) similar topier bracket 126 may be welded or otherwise secured to a center of the bottom ofmonopole 105. During installation, helical pier 148-5 may be driven into a location corresponding to the center ofmonopole 105. The helical pier 148-5 may be aligned with the center pier bracket and secured in a manner similar to that described above with respect to piers 148-1 to 148-4. - In still other implementations, additional helical piers may be installed and secured to truss assemblies 110. For example, one or more additional pier brackets may be secured to a bottom surface of
horizontal brace element 114. Additional helical piers may be driven corresponding to the locations of each additional pier bracket. The additional piers may be able to support longer monopoles having longer lengths or monopoles positioned in potentially less stable environments. As previously mentioned, though helical piers are shown in the embodiments, it is understood that the system may include a variety of different micropile and pier systems. - By providing a truss-based, helical pier
monopole support system 100, embodiments described herein may provide an efficient and environmentally sensitive alternative to existing monopole support systems. More particularly, helical piers may be driven into the ground surrounding a monopole with minimal environment impact. The above-described truss assemblies may be secured to both the helical piers and the monopole to provide an effective support system with minimal impact and cost. - The foregoing description of exemplary implementations provides illustration and description, but is not intended to be exhaustive or to limit the embodiments described herein to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of the embodiments.
- Although the invention has been described in detail above, it is expressly understood that it will be apparent to persons skilled in the relevant art that the invention may be modified without departing from the spirit of the invention. Various changes of form, design, or arrangement may be made to the invention without departing from the spirit and scope of the invention. Therefore, the above-mentioned description is to be considered exemplary, rather than limiting, and the true scope of the invention is that defined in the following claims.
- No element, act, or instruction used in the description of the present application should be construed as critical or essential to the invention unless explicitly described as such. Also, as used herein, the article “a” is intended to include one or more items. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
Claims (20)
Priority Applications (2)
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US13/751,957 US20130227897A1 (en) | 2012-03-01 | 2013-01-28 | Truss-Based Monopole Support Structure |
CA2805515A CA2805515C (en) | 2012-03-01 | 2013-02-12 | Truss-based monopole support structure |
Applications Claiming Priority (2)
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US201261605534P | 2012-03-01 | 2012-03-01 | |
US13/751,957 US20130227897A1 (en) | 2012-03-01 | 2013-01-28 | Truss-Based Monopole Support Structure |
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US20130227897A1 true US20130227897A1 (en) | 2013-09-05 |
Family
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Family Applications (1)
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US13/751,957 Abandoned US20130227897A1 (en) | 2012-03-01 | 2013-01-28 | Truss-Based Monopole Support Structure |
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CA (1) | CA2805515C (en) |
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US20140115978A1 (en) * | 2012-11-01 | 2014-05-01 | Thomas & Betts International, Inc. | Adjustable monopole support structure |
US20150204101A1 (en) * | 2012-08-13 | 2015-07-23 | Offshore Design Engineering Ltd. | Plated transition piece |
EP2913522A1 (en) * | 2014-02-28 | 2015-09-02 | Mitsubishi Heavy Industries, Ltd. | Tower for wind turbine apparatus |
US9518402B1 (en) * | 2015-09-04 | 2016-12-13 | Kundel Industries, Inc. | Anchoring system |
US9556636B2 (en) * | 2014-06-27 | 2017-01-31 | Tindall Corporation | Method and apparatus for erecting tower with hydraulic cylinders |
US20170089024A1 (en) * | 2014-03-19 | 2017-03-30 | Asahi Kasei Construction Materials Corporation | Steel pipe pile with spiral blades, composite pile, and construction method of composite pile |
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US9945145B2 (en) * | 2016-02-22 | 2018-04-17 | Trinity Meyer Utility Structures Llc | Embedded poles for utility poles and structures |
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US10233667B1 (en) * | 2018-06-14 | 2019-03-19 | Albert E. Frenette | Temporary barrier post |
US20190186677A1 (en) * | 2016-05-09 | 2019-06-20 | Jiangsu University | Frost prevention machine support with adjustable bottom structure |
CN111980153A (en) * | 2020-08-18 | 2020-11-24 | 杭州江南建筑设计院有限公司 | Construction method for embedded column base in ground beam |
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US10704286B2 (en) * | 2014-06-27 | 2020-07-07 | Tindall Corporation | Method and apparatus for erecting tower with hydraulic cylinders |
US9518402B1 (en) * | 2015-09-04 | 2016-12-13 | Kundel Industries, Inc. | Anchoring system |
US9771733B2 (en) * | 2016-02-22 | 2017-09-26 | Trinity Meyer Utility Structures, Llc | Embedded poles for utility poles and structures |
US9945145B2 (en) * | 2016-02-22 | 2018-04-17 | Trinity Meyer Utility Structures Llc | Embedded poles for utility poles and structures |
US20190186677A1 (en) * | 2016-05-09 | 2019-06-20 | Jiangsu University | Frost prevention machine support with adjustable bottom structure |
CN106758787A (en) * | 2016-11-30 | 2017-05-31 | 东南大学 | A kind of Precast Pier Columns mounting and positioning device |
US10233667B1 (en) * | 2018-06-14 | 2019-03-19 | Albert E. Frenette | Temporary barrier post |
CN108677996A (en) * | 2018-07-23 | 2018-10-19 | 上海交通大学 | Offshore wind turbine single-pile foundation with truss lateral support structure |
CN108677996B (en) * | 2018-07-23 | 2024-06-25 | 上海交通大学 | Offshore wind turbine single pile foundation with truss lateral support structure |
WO2021094745A1 (en) * | 2019-11-13 | 2021-05-20 | Haywood And Jackson Fabrications Limited | Life extension assembly for structures |
US11408175B2 (en) * | 2020-03-10 | 2022-08-09 | Meyer Utility Structures, Llc | Embedded pole adapter assembly |
CN111980153A (en) * | 2020-08-18 | 2020-11-24 | 杭州江南建筑设计院有限公司 | Construction method for embedded column base in ground beam |
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CA2805515C (en) | 2015-05-19 |
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