JP2007321358A - Reinforcing fitting assembly for steel-pipe steel tower - Google Patents

Reinforcing fitting assembly for steel-pipe steel tower Download PDF

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JP2007321358A
JP2007321358A JP2006149916A JP2006149916A JP2007321358A JP 2007321358 A JP2007321358 A JP 2007321358A JP 2006149916 A JP2006149916 A JP 2006149916A JP 2006149916 A JP2006149916 A JP 2006149916A JP 2007321358 A JP2007321358 A JP 2007321358A
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block
steel pipe
assembly
nodal
rectangular flat
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JP5001581B2 (en
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Junji Maeda
潤滋 前田
Minoru Matsunaga
稔 松永
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JAPAN STEEL TOWER
Japan Steel Tower Co Ltd JST
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JAPAN STEEL TOWER
Japan Steel Tower Co Ltd JST
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing fitting assembly for a steel-pipe steel tower, which can be simply mounted on a gusset-plate welding node steel pipe of an existing steel-pipe steel tower only by bolt-nut fastening, and which can impart desired tensile strength to the node steel pipe. <P>SOLUTION: This reinforcing fitting assembly is mounted on the gusset-plate welding node steel pipe 8 of the existing steel-pipe steel tower 1. An I-type assembly 20 comprises first and second blocks 21 and 22 which are each formed in a rectangular flat plate shape. Arcuate recesses 211 and 221 are provided in a mutually opposed state almost in the long-side-direction center of each of the blocks 21 and 22, and coaxial bolt holes 212 and 222 elongated in the short-side direction are provided at both the long-side-direction ends thereof. The recesses 211 and 221 are brought into contact with the outer periphery of the node steel pipe 8, and nuts 24 are fastened to bolts 23 which pass through the coaxial bolt holes at both the ends, respectively, so that each of the blocks can be fastened and fixed to the node steel pipe. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、鋼管鉄塔の鋼管部材を金具締め方式により補強するための補強金具組立体に関し、特に、既設鋼管鉄塔のガセットプレート溶接節点鋼管に装着される補強金具組立体に関する。   The present invention relates to a reinforcing metal fitting assembly for reinforcing a steel pipe member of a steel pipe tower by a metal fitting tightening method, and more particularly to a reinforcing metal fitting assembly attached to a gusset plate welded node steel pipe of an existing steel pipe tower.

鋼管鉄塔は、送電、送信等に広く用いられている。説明の便宜上、図１６および図１７を参照して、送電用鋼管鉄塔を例にとって説明する。図１６は従来の送電用鋼管鉄塔の腕金組立体取付け付近の骨組み側面図であり、また、図１７は図１６の送電用鋼管鉄塔の円１７で囲んだ部分の拡大側面図である。   Steel pipe towers are widely used for power transmission and transmission. For convenience of explanation, a steel pipe tower for power transmission will be described as an example with reference to FIGS. 16 and 17. FIG. 16 is a side view of the framework in the vicinity of the attachment of the arm bracket assembly of the conventional steel tube tower for power transmission, and FIG. 17 is an enlarged side view of the portion surrounded by the circle 17 of the steel tube tower for power transmission in FIG.

図１６、１７に示すように、送電用鋼管鉄塔１は、鉄塔本体２から水平方向左右に張り出した腕金組立体３を有している。腕金組立体３には、送電線等（図示せず）が懸架され、腕金組立体３の斜め吊上げ材取付け部４には送電線等の自重および隣接する鉄塔の高低差による電線張力の引き下げ成分が作用し、長期間にわたって内部引張応力が継続的に作用する。台風等の強風によって送電線等には過酷な衝撃荷重が作用し、その衝撃荷重が引金となって、腕金組立体３の斜め吊上げ材取付け部４に損傷を与え、ついには腕金組立体３の崩落に至る場合もある。   As shown in FIGS. 16 and 17, the steel pipe tower for power transmission 1 has a brace assembly 3 projecting from the tower body 2 to the left and right in the horizontal direction. A transmission line or the like (not shown) is suspended on the armor assembly 3, and the slanted lifting material mounting portion 4 of the armor assembly 3 has an electric wire tension due to its own weight such as the transmission line and the height difference between adjacent steel towers. The pulling-down component acts, and the internal tensile stress acts continuously over a long period. Severe impact loads act on power transmission lines and the like due to strong winds such as typhoons, and the impact loads trigger the damage to the slanting lifting material mounting portion 4 of the armrest assembly 3, and finally the armrest assembly In some cases, the solid 3 may collapse.

設立初期の送電用鋼管鉄塔１については未だ節点耐力の調査・分析が十分に行われていない。例えば、図１７に示すように、ガセットプレート５と鋼管６からなる腹材接合部７のうち軽微な部位では補強もなされていないのが実情である。   As for the steel pipe tower 1 for power transmission in the early days of establishment, the node strength has not been sufficiently investigated and analyzed. For example, as shown in FIG. 17, the actual situation is that the light portion of the abdomen joint portion 7 composed of the gusset plate 5 and the steel pipe 6 is not reinforced.

鋼管鉄塔の実際に破断事故を起こした箇所を採取して観察、分析、実験を行った結果以下のことが判明した。   As a result of collecting, observing, analyzing, and experimenting the location where the steel pipe tower actually caused the fracture accident, we found the following.

例えば、図１８の（Ａ）に示すように、鋼管主柱材８にガセットプレート５が溶接されたガセットプレート溶接節点において、ガセットプレート５に水平方向の圧縮力Ｆ１または引張力Ｆ２が作用したとき、（Ｂ）、（Ｃ）に示すように、鋼管主柱材８（以下、「ガセットプレート溶接節点鋼管８」または「節点鋼管８」と言う。）の断面は圧縮力Ｆ１または引張力Ｆ２により扁平に変形する。特に、図１８の（Ｃ）に示すように、引張力Ｆ２が作用した場合、ガセットプレート５が節点鋼管８から剥離する。そのとき、節点鋼管８の溶接部付近に亀裂が発生し、耐力不足により節点鋼管８自体に座屈を発生する場合もある。 For example, as shown in FIG. 18A, a horizontal compression force F 1 or tensile force F 2 acts on the gusset plate 5 at a gusset plate welding node in which the gusset plate 5 is welded to the steel pipe main column material 8. Then, as shown in (B) and (C), the cross section of the steel pipe main column material 8 (hereinafter referred to as “gusset plate welded node steel pipe 8” or “node steel pipe 8”) has a compressive force F 1 or tension. to flatly deformed by a force F 2. In particular, as shown in FIG. 18C, the gusset plate 5 peels from the nodal steel pipe 8 when the tensile force F 2 is applied. At that time, cracks may occur in the vicinity of the welded portion of the nodal steel pipe 8, and the nodal steel pipe 8 itself may buckle due to insufficient proof stress.

中空鋼管内にセメントを流し込む補強方法も考えられるが、鋼管鉄塔自体の重量が増すばかりではなく、山岳地帯等の現場においては、セメント注入作業は不可能である。   Although a reinforcing method for pouring cement into the hollow steel pipe is also conceivable, not only the weight of the steel pipe tower itself is increased, but also cement injection work is impossible in a mountainous area or the like.

特に、腕金組立体は鉄塔本体の頂部付近にあるので、その補強作業は一層困難を極めている。   In particular, since the brace assembly is near the top of the steel tower body, the reinforcement work is more difficult.

現状で、節点鋼管の耐力が不足する場合には、工場製作時点で図１９−２１に示すような対策が採られている。図１９、２０、２１は、従来の鋼管鉄塔用補強金具の第１例、第２例、第３例をそれぞれ示し、各（Ａ）は側面図であり、各（Ｂ）は端面図である。   At present, when the proof stress of the nodal steel pipe is insufficient, the countermeasures shown in FIGS. 19-21 are taken at the time of factory production. 19, 20, and 21 show a first example, a second example, and a third example of a conventional steel tube tower reinforcing metal fitting, each (A) is a side view, and each (B) is an end view. .

図１９は、通しガセットプレート５を使用した第１例を示す。図２０は、節点鋼管周方向に広がりを持つサドル型スチフナ９を溶接した第２例を示す。図２１は、ガセットプレート５の両端をリングスチフナ１０で補強した第３例を示す。これらのいずれの補強対策も強度上昇効果が期待できるものの、実荷重が存在している既設の鋼管鉄塔の節点鋼管に現場溶接を適用するのは困難である。   FIG. 19 shows a first example using the through gusset plate 5. FIG. 20 shows a second example in which a saddle type stiffener 9 having a spread in the circumferential direction of the nodal steel pipe is welded. FIG. 21 shows a third example in which both ends of the gusset plate 5 are reinforced by the ring stiffener 10. Although any of these reinforcement measures can be expected to increase the strength, it is difficult to apply field welding to the nodal steel pipes of existing steel pipe towers where actual loads exist.

本発明の課題は、既設鋼管鉄塔のガセットプレート溶接節点鋼管にボルト−ナット締めのみで簡便に装着でき、しかも節点鋼管に所望の引張強度を与えることができる鋼管鉄塔用補強金具組立体を提供することにある。   An object of the present invention is to provide a steel tube tower reinforcing bracket assembly that can be easily attached to a gusset plate welded node steel pipe of an existing steel pipe tower only by tightening bolts and nuts, and can give a desired tensile strength to the node steel pipe. There is.

本発明の第１観点に基づく補強金具組立体は、既設鋼管鉄塔のガセットプレート溶接節点鋼管に装着される。補強金具組立体は、長方形平板形状の第１ブロックと、長方形平板形状の第２ブロックとからなる。各ブロックの長辺方向のほぼ中央に円弧状凹部が互いに対向して設けられかつ長辺方向両端に短辺方向に延びる同軸上ボルト穴が設けられる。各ブロックの凹部が節点鋼管の外周に接触し、両端の同軸上ボルト穴を貫通したボルトにナットを締め付けることによって各ブロックが節点鋼管に締結固定される。   The reinforcing metal fitting assembly based on the 1st viewpoint of this invention is mounted | worn with the gusset plate welding node steel pipe of the existing steel pipe tower. The reinforcing bracket assembly includes a rectangular flat plate-shaped first block and a rectangular flat plate-shaped second block. Arc-shaped concave portions are provided substantially opposite to each other in the long side direction of each block, and coaxial upper bolt holes extending in the short side direction are provided at both ends of the long side direction. The concave portion of each block comes into contact with the outer periphery of the nodal steel pipe, and each block is fastened and fixed to the nodal steel pipe by tightening nuts to bolts penetrating the coaxial upper bolt holes at both ends.

本発明の第２観点に基づく補強金具組立体は、長方形平板状の第１ブロックと、長方形平板形状の第２ブロックとからなる。各ブロックの長辺方向の一端側に偏って円弧状凹部が互いに対向して設けられる。第１ブロックの長辺方向他端側に板厚方向に延びる突起が設けられる。各ブロックの他端側でかつ凹部寄りに短辺方向に延びる同軸上ボルト穴が設けられる。各ブロックの凹部が節点鋼管の外周に接触し、第１ブロックの突起が第２ブロックの内面に接触し、同軸上ボルト穴を貫通したボルトにナットを締め付けることによって各ブロックが節点鋼管に締結固定される。   The reinforcing metal fitting assembly based on the second aspect of the present invention includes a rectangular flat plate-shaped first block and a rectangular flat plate-shaped second block. Arc-shaped concave portions are provided opposite to each other so as to be biased toward one end side in the long side direction of each block. A protrusion extending in the thickness direction is provided on the other end side in the long side direction of the first block. A coaxial upper bolt hole extending in the short side direction is provided on the other end side of each block and closer to the recess. The concave part of each block comes into contact with the outer circumference of the nodal steel pipe, the projection of the first block comes into contact with the inner surface of the second block, and each block is fastened and fixed to the nodal steel pipe by tightening the nut to the bolt that penetrates the coaxial upper bolt hole. Is done.

本発明の第３観点に基づく補強金具組立体は、各ブロックの長辺の長さを短辺の長さに比べて大きく形成し、第１ブロックに設けた突起と同軸上ボルト穴との間の距離を大きく形成した構造を有する。   In the reinforcing metal fitting assembly according to the third aspect of the present invention, the length of the long side of each block is formed to be larger than the length of the short side, and the gap between the protrusion provided on the first block and the coaxial upper bolt hole. This structure has a large distance.

第２および第３観点に基づく補強金具組立体においては、第１ブロックの突起の頂部が長辺方向に円弧状に形成されていることが好ましい。   In the reinforcing metal fitting assembly based on the second and third aspects, it is preferable that the top portion of the protrusion of the first block is formed in an arc shape in the long side direction.

本発明の第４観点に基づく補強金具組立体は、長方形平板状の連結基端部およびその連結基端部の両端からそれぞれ延びる長方形平板状の腕部を有していて平面視Ｕ字形状の第１ブロックと、第１ブロックの連結基端部に対向する長方形平板状の第２ブロックと、第１ブロックの各腕部の自由端に対向する長方形平板状の第３ブロックとからなる。第１ブロックの連結基端部に第２ブロックに対向する円弧状凹部が設けられる。第２ブロックに連結基端部の凹部に対向する円弧状凹部が設けられる。第３ブロックに腕部間の空間に対向する円弧状凹部が設けられる。第１ブロックの連結基端部の両端および第１ブロックの各腕部自由端、ならびに第２および第３ブロックの長辺両端にそれぞれ対応する同軸上ボルト穴が設けられる。各ブロックの凹部が節点鋼管の外周に接触し、各同軸上ボルト穴を貫通したボルトにナットを締め付けることによって各ブロックが節点鋼管に締結固定される。   The reinforcing metal fitting assembly according to the fourth aspect of the present invention has a rectangular flat plate-like connecting base end portion and rectangular flat plate-like arm portions extending from both ends of the connecting base end portion, and is U-shaped in a plan view. It consists of a first block, a rectangular flat plate-like second block that faces the connecting base end of the first block, and a rectangular flat plate-like third block that faces the free end of each arm of the first block. An arc-shaped recess facing the second block is provided at the connection base end of the first block. The second block is provided with an arc-shaped recess facing the recess of the connecting base end. An arc-shaped recess facing the space between the arm portions is provided in the third block. Coaxial upper bolt holes respectively corresponding to both ends of the connecting base end portion of the first block, each arm portion free end of the first block, and both long ends of the second and third blocks are provided. The concave portion of each block comes into contact with the outer periphery of the nodal steel pipe, and each block is fastened and fixed to the nodal steel pipe by tightening a nut to a bolt penetrating each coaxial upper bolt hole.

本発明に基づく補強金具組立体は、既設鋼管鉄塔の現場において、ガセットプレート溶接節点鋼管に溶接をせずに、ボルト−ナット締結だけで装着でき、しかも節点鋼管の耐力を最大４０％近くまで増加させることができる。   The reinforcing bracket assembly according to the present invention can be installed by simply fastening bolts and nuts without welding to gusset plate welded node steel pipes in the field of existing steel pipe towers, and also increases the proof stress of jointed steel pipes up to nearly 40%. Can be made.

図１−１５を参照して、本発明に基づく補強金具組立体の実施例について説明する。   With reference to FIGS. 1-15, the Example of the reinforcement metal fitting assembly based on this invention is described.

図１−３は、本発明の第１観点に基づく鋼管鉄塔用補強金具組立体の第１実施例を示す。図１は補強金具組立体の分解正面図、図２は図１のＩＩ−ＩＩ線から見た補強金具組立体の横断面図、図３は図１の補強金具組立体の斜視図であって、組み立てられた状態を示す。   FIGS. 1-3 shows the 1st Example of the reinforcement metal fitting assembly for steel pipe towers based on the 1st viewpoint of this invention. 1 is an exploded front view of the reinforcing bracket assembly, FIG. 2 is a cross-sectional view of the reinforcing bracket assembly seen from the line II-II in FIG. 1, and FIG. 3 is a perspective view of the reinforcing bracket assembly in FIG. The assembled state is shown.

本発明の第１観点において、第１実施例の補強金具組立体２０は、既設鋼管鉄塔１（図１６参照）の節点鋼管８（図１４）に装着される。第１実施例の補強金具組立体２０（以下、単に「Ｉ型組立体２０」と言う。）は、長方形平板形状の第１ブロック２１と、長方形平板形状の第２ブロック２２とからなる。各ブロック２１、２２の長辺方向のほぼ中央に円弧状凹部２１１、２２１が互いに対向して設けられかつ長辺方向両端に短辺方向に延びる同軸上ボルト穴２１２、２２２が設けられる。   In the first aspect of the present invention, the reinforcing bracket assembly 20 of the first embodiment is attached to the nodal steel pipe 8 (FIG. 14) of the existing steel pipe tower 1 (see FIG. 16). The reinforcing metal fitting assembly 20 of the first embodiment (hereinafter simply referred to as “I-type assembly 20”) includes a rectangular flat plate-shaped first block 21 and a rectangular flat plate-shaped second block 22. Arc-shaped concave portions 211 and 221 are provided opposite to each other at substantially the center in the long side direction of each block 21 and 22, and coaxial upper bolt holes 212 and 222 extending in the short side direction are provided at both ends of the long side direction.

各ブロック２１、２２の凹部２１１、２２１が節点鋼管８（図１４）の外周に接触し、両端の同軸上ボルト穴２１２、２２２を貫通したボルト２３にナット２４を締め付けることによって各ブロックが節点鋼管８に締結固定される。   The concave portions 211 and 221 of the blocks 21 and 22 are in contact with the outer periphery of the nodal steel pipe 8 (FIG. 14), and the nuts 24 are fastened to the bolts 23 penetrating the coaxial upper bolt holes 212 and 222 at both ends. 8 is fastened and fixed.

図１４にＩ型組立体２０の装着例を示す。節点鋼管８には、各節点の機能に基づいて各種形状のガセットプレート５が溶接されている。例えば、図１４の（Ａ）、（Ｂ）では、節点鋼管８を挟んで上下対称のガセットプレート５が溶接され、また、図１４の（Ｃ）、（Ｄ）、（Ｅ）では、節点鋼管８を挟んで上下非対称のガセットプレート５が溶接されている。図１４の（Ａ）では、Ｉ型組立体２０が、ガセットプレート５の両端の節点鋼管８にそれぞれ１つずつ装着されている。図１４の（Ｂ）図では、Ｉ型組立体２０が、ガセットプレート５の両端の節点鋼管８にそれぞれ２つずつ９０度取付け向きを変えて装着されている。その他の装着例については、他の実施例に関連して順次説明する。   FIG. 14 shows a mounting example of the I-type assembly 20. Various shapes of gusset plates 5 are welded to the node steel pipe 8 based on the function of each node. For example, in FIGS. 14A and 14B, the vertically symmetrical gusset plate 5 is welded with the nodal steel pipe 8 sandwiched therebetween, and in FIGS. 14C, 14D and 14E, the nodal steel pipe is used. A vertical symmetric gusset plate 5 is welded across 8. In FIG. 14A, one I-type assembly 20 is attached to each of the nodal steel pipes 8 at both ends of the gusset plate 5. In FIG. 14B, two I-type assemblies 20 are mounted on the nodal steel pipes 8 at both ends of the gusset plate 5 by changing the mounting direction by two by 90 degrees. Other mounting examples will be sequentially described in relation to other embodiments.

図４−６は、本発明の第２観点に基づく補強金具組立体の第２実施例を示す。図４は補強金具組立体の分解正面図、図５は図４のＶ−Ｖ線から見た補強金具組立体の横断面図、図６は図４の補強金具組立体の斜視図であって、組み立てられた状態を示す。   FIGS. 4-6 shows the 2nd Example of the reinforcement metal fitting assembly based on the 2nd viewpoint of this invention. 4 is an exploded front view of the reinforcing bracket assembly, FIG. 5 is a cross-sectional view of the reinforcing bracket assembly seen from line VV in FIG. 4, and FIG. 6 is a perspective view of the reinforcing bracket assembly in FIG. The assembled state is shown.

本発明の第２観点において、第２実施例の補強金具組立体３０は、既設鋼管鉄塔１（図１６参照）の節点鋼管８（図１４）に装着される。第２実施例の補強金具組立体３０（以下、単に「ＩＩ型組立体３０」と言う。）は、長方形平板状の第１ブロック３１と、長方形平板形状の第２ブロック３２とからなる。各ブロック３１、３２の長辺方向の一端側に偏って円弧状凹部３１１、３２１が互いに対向して設けられる。第１ブロック３１の長辺方向他端側に板厚方向に延びる突起３１２が設けられる。各ブロック３１、３２の他端側でかつ凹部３１１、３２１寄りに短辺方向に延びる同軸上ボルト穴３１３、３２３が設けられる。   In the second aspect of the present invention, the reinforcing bracket assembly 30 of the second embodiment is attached to the nodal steel pipe 8 (FIG. 14) of the existing steel pipe tower 1 (see FIG. 16). The reinforcing metal fitting assembly 30 (hereinafter simply referred to as “II-type assembly 30”) of the second embodiment includes a rectangular flat plate-shaped first block 31 and a rectangular flat plate-shaped second block 32. Arc-shaped concave portions 311 and 321 are provided so as to be opposed to each other while being biased toward one end side in the long side direction of each block 31 and 32. A protrusion 312 extending in the thickness direction is provided on the other side of the first block 31 in the long side direction. Coaxial upper bolt holes 313 and 323 extending in the short side direction are provided on the other end side of each block 31 and 32 and closer to the recesses 311 and 321.

各ブロック３１、３２の凹部３１１、３２１が節点鋼管８（図１４）の外周に接触し、第１ブロック３１の突起３１２が第２ブロック３２の内面に接触し、同軸上ボルト穴３１３、３２３を貫通したボルト２３にナット２４を締め付けることによって各ブロック３１、３２が節点鋼管８に締結固定される。ＩＩ型組立体３０においては、図６に示すように、ボルト締結部位は１箇所である。この構造は、突起３１２を支点とし、ボルト２３を作用点とした梃子作用によって、接点鋼管８を締め付ける機能を有している。   The concave portions 311 and 321 of the blocks 31 and 32 are in contact with the outer periphery of the nodal steel pipe 8 (FIG. 14), the protrusion 312 of the first block 31 is in contact with the inner surface of the second block 32, and the coaxial upper bolt holes 313 and 323 are formed. The blocks 31 and 32 are fastened and fixed to the nodal steel pipe 8 by tightening the nuts 24 to the bolts 23 that have penetrated. In the II type assembly 30, as shown in FIG. 6, there is one bolt fastening portion. This structure has a function of tightening the contact steel pipe 8 by lever action with the projection 312 as a fulcrum and the bolt 23 as an action point.

図１４にＩＩ型組立体３０の装着例を示す。図１４の（Ｃ）図では、前述したＩ型組立体２０がガセットプレート５の左側で節点鋼管８に装着され、ＩＩ型組立体３０がガセットプレート５の右側で節点鋼管８に装着され、ＩＩ型組立体３０のさらに右側で節点鋼管８にＩ型組立体２０が節点鋼管８にそれぞれ装着されている。   FIG. 14 shows a mounting example of the type II assembly 30. In FIG. 14C, the above-described I-type assembly 20 is attached to the nodal steel pipe 8 on the left side of the gusset plate 5, and the II-type assembly 30 is attached to the nodal steel pipe 8 on the right side of the gusset plate 5. Further on the right side of the die assembly 30, the I-type assembly 20 is attached to the nodal steel tube 8.

図７−９は本発明の第３観点に基づく補強金具組立体の第３実施例を示す。図７は補強金具組立体の分解正面図、図８は図７のＶＩＩＩ−ＶＩＩＩ線から見た補強金具組立体の横断面図、図９は図７の補強金具組立体の斜視図であって、組み立てられた状態を示す。   7-9 show a third embodiment of the reinforcing metal fitting assembly according to the third aspect of the present invention. 7 is an exploded front view of the reinforcing bracket assembly, FIG. 8 is a cross-sectional view of the reinforcing bracket assembly seen from the line VIII-VIII in FIG. 7, and FIG. 9 is a perspective view of the reinforcing bracket assembly in FIG. The assembled state is shown.

本発明の第３観点において、第３実施例の補強金具組立体４０は、既設鋼管鉄塔１（図１６参照）の節点鋼管８（図１４）に装着される。第３実施例の補強金具組立体４０（以下、単に「ＩＩＩ型組立体４０」と言う。）は、長方形平板状の第１ブロック４１と、長方形平板形状の第２ブロック４２とからなる。各ブロック４１、４２の長辺方向の一端側に偏って円弧状凹部４１１、４２１が互いに対向して設けられる。第１ブロック４１の長辺方向他端側に板厚方向に延びる突起４１２が設けられる。各ブロック４１、４２の他端側でかつ凹部４１１、４２１寄りに短辺方向に延びる同軸上ボルト穴４１３、４２３が設けられる。   In the third aspect of the present invention, the reinforcing bracket assembly 40 of the third embodiment is attached to the nodal steel pipe 8 (FIG. 14) of the existing steel pipe tower 1 (see FIG. 16). The reinforcing metal fitting assembly 40 (hereinafter simply referred to as “III-type assembly 40”) of the third embodiment includes a rectangular flat plate-shaped first block 41 and a rectangular flat plate-shaped second block 42. Arc-shaped concave portions 411 and 421 are provided so as to be opposed to each other while being biased toward one end side in the long side direction of each block 41 and 42. A protrusion 412 extending in the thickness direction is provided on the other end side in the long side direction of the first block 41. Coaxial upper bolt holes 413, 423 extending in the short side direction are provided on the other end side of each block 41, 42 and closer to the recesses 411, 421.

各ブロック４１、４２の凹部４１１、４２１が節点鋼管８（図１４）の外周に接触し、第１ブロック４１の突起４１２が第２ブロック４２の内面に接触し、同軸上ボルト穴４１３、４２３を貫通したボルト２３にナット２４を締め付けることによって各ブロック４１、４２が節点鋼管８に締結固定される。ＩＩＩ型組立体３０は前述のＩＩ型組立体２０とほぼ類似の構成であるが、ＩＩＩ型組立体３０においては、各ブロック４１、４２の長辺の長さを短辺の長さに比べて大きく形成し、第１ブロック４１に設けた突起４１２と同軸上ボルト穴４１３との間の距離を大きく形成している点でＩＩ型組立体２０と相違する。この構造では、梃子比を大きく採って締付け機能を強化している。   The concave portions 411 and 421 of the blocks 41 and 42 are in contact with the outer periphery of the nodal steel pipe 8 (FIG. 14), the protrusion 412 of the first block 41 is in contact with the inner surface of the second block 42, and the coaxial upper bolt holes 413 and 423 are formed. The blocks 41 and 42 are fastened and fixed to the nodal steel pipe 8 by tightening the nuts 24 to the bolts 23 that have penetrated. The type III assembly 30 has a configuration substantially similar to the type II assembly 20 described above, but in the type III assembly 30, the length of the long side of each block 41, 42 is compared with the length of the short side. It is different from the type II assembly 20 in that it is formed large and the distance between the projection 412 provided on the first block 41 and the coaxial upper bolt hole 413 is large. In this structure, the tightening function is strengthened by taking a large lever ratio.

図１４にＩＩＩ型組立体４０の装着例を示す。図１４の（Ｄ）図では、前述したＩ型組立体２０がガセットプレート５の左側で節点鋼管８に装着され、ＩＩＩ型組立体４０がガセットプレート５の右側で節点鋼管８に装着され、ＩＩＩ型組立体４０のさらに右側で節点鋼管８にＩ型組立体２０が節点鋼管８にそれぞれ装着されている。   FIG. 14 shows a mounting example of the type III assembly 40. In FIG. 14D, the above-described I-type assembly 20 is attached to the nodal steel pipe 8 on the left side of the gusset plate 5, and the III-type assembly 40 is attached to the nodal steel pipe 8 on the right side of the gusset plate 5. Further on the right side of the die assembly 40, the I-type assembly 20 is mounted on the node steel pipe 8.

ＩＩ型組立体３０およびＩＩＩ型組立体４０において、第１ブロック３１、４１の突起３１２、４１２は梃子の支点の働きをするので、突起３１２、４１２の頂部は第１ブロック３１、４１長辺方向に円弧状に形成されていることが好ましい。   In the II type assembly 30 and the III type assembly 40, the projections 312 and 412 of the first blocks 31 and 41 function as a fulcrum of the insulator, so that the tops of the projections 312 and 412 are in the long side direction of the first blocks 31 and 41. It is preferably formed in an arc shape.

図１０−１３は、本発明の第４観点に基づく補強金具組立体の第４実施例を示す。図１０は補強金具組立体の分解正面図、図１１は図１０のＸＩ−ＸＩ線から見た補強金具組立体の横断面図、図１２は図１０のＸＩＩ−ＸＩＩ線から見た補強金具組立体の第１ブロックの平面図、図１３は図１０の補強金具組立体の斜視図であって、組み立てられた状態を示す。   10-13 show a fourth embodiment of the reinforcing bracket assembly according to the fourth aspect of the present invention. 10 is an exploded front view of the reinforcing bracket assembly, FIG. 11 is a cross-sectional view of the reinforcing bracket assembly seen from the line XI-XI in FIG. 10, and FIG. 12 is a reinforcing bracket assembly seen from the line XII-XII in FIG. FIG. 13 is a perspective view of the reinforcing bracket assembly of FIG. 10 and shows the assembled state.

本発明の第４観点において、第４実施例の補強金具組立体５０は、既設鋼管鉄塔１（図１６参照）の後述するガセットプレート溶接節点鋼管８（図１４）に装着される。第４実施例の補強金具組立体５０（以下、単に「ＩＶ型組立体５０」と言う。）は、長方形平板状の連結基端部５１１およびその連結基端部５１１の両端からそれぞれ延びる長方形平板状の腕部５１２を有していて平面視Ｕ字形状の第１ブロック５１と、第１ブロック５１の連結基端部５１１に対向する長方形平板状の第２ブロック５２と、第１ブロック５１の各腕部５１２の自由端に対向する長方形平板状の第３ブロック５３とからなる。第１ブロック５１の連結基端部５１１に第２ブロック５２に対向する円弧状凹部５１３が設けられる。第２ブロック５２に連結基端部５１１の凹部５１３に対向する円弧状凹部５２３が設けられる。第３ブロック５３に腕部５１２、５１２間の空間５１４（図１２）に対向する円弧状凹部５３３が設けられる。第１ブロック５１の連結基端部５１１の両端および第１ブロック５１の各腕部５１２の自由端、ならびに第２および第３ブロック５２、５３の長辺両端にそれぞれ対応する同軸上ボルト穴５１５、５２５、５３５が設けられる。   In the fourth aspect of the present invention, the reinforcing bracket assembly 50 of the fourth embodiment is attached to a gusset plate welded node steel pipe 8 (FIG. 14) described later of the existing steel pipe tower 1 (see FIG. 16). The reinforcing metal fitting assembly 50 (hereinafter simply referred to as “IV-type assembly 50”) of the fourth embodiment is a rectangular flat plate-shaped connecting base end portion 511 and a rectangular flat plate extending from both ends of the connecting base end portion 511, respectively. A first block 51 having a U-shape in plan view, a rectangular flat plate-like second block 52 facing the connection base end portion 511 of the first block 51, and the first block 51 It consists of a rectangular flat plate-like third block 53 facing the free end of each arm part 512. An arcuate recess 513 facing the second block 52 is provided at the connection base end 511 of the first block 51. The second block 52 is provided with an arcuate recess 523 that faces the recess 513 of the connection base end 511. The third block 53 is provided with an arcuate recess 533 facing the space 514 (FIG. 12) between the arms 512 and 512. Coaxial upper bolt holes 515 corresponding to both ends of the connecting base end portion 511 of the first block 51, the free ends of the respective arm portions 512 of the first block 51, and both long ends of the second and third blocks 52 and 53, respectively. 525 and 535 are provided.

各ブロック５１、５２、５３の凹部５１３、５２３、５３３が節点鋼管８の外周に接触し、各同軸上ボルト穴５１５、５２５、５３５を貫通したボルト２３にナット２４を締め付けることによって各ブロック５１、５２、５３が節点鋼管８に締結固定される。   Recesses 513, 523, 533 of the respective blocks 51, 52, 53 are in contact with the outer periphery of the nodal steel pipe 8, and each block 51, by tightening the nut 24 to the bolt 23 penetrating each coaxial upper bolt hole 515, 525, 535. 52 and 53 are fastened and fixed to the nodal steel pipe 8.

図１４にＩＶ型組立体５０の装着例を示す。図１４の（Ｅ）図では、前述したＩ型組立体２０がガセットプレート５の左側で節点鋼管８に装着され、ＩＶ型組立体５０がガセットプレート５の右側で節点鋼管８に装着される。この場合、ＩＶ型組立体５０においては、第３ブロック５３および第１ブロック５１の腕部５１２の自由端がガセットプレート５の右側に隣接して配置され、第２ブロック５２および第１ブロック５１の連結基端部５１１がガセットプレート５の右側から離れて配置される。   FIG. 14 shows a mounting example of the IV type assembly 50. In FIG. 14E, the I-type assembly 20 described above is attached to the nodal steel pipe 8 on the left side of the gusset plate 5, and the IV-type assembly 50 is attached to the nodal steel pipe 8 on the right side of the gusset plate 5. In this case, in the IV type assembly 50, the free ends of the arm portions 512 of the third block 53 and the first block 51 are disposed adjacent to the right side of the gusset plate 5, and the second block 52 and the first block 51 The connecting base end portion 511 is arranged away from the right side of the gusset plate 5.

本発明に基づく鋼管鉄塔用補強金具組立体の補強効果を確認するために、図１４に示す各種補強金具組立体（Ｉ−ＩＶ型組立体２０−５０）を装着した試験体（節点鋼管８）に対して、耐力試験を行った。その試験結果を表１および図１５に示す。各補強金具組立体を各試験体に、Ｍ１６の標準締付けトルク（７４Ｎ・ｍ）で固定した。   In order to confirm the reinforcing effect of the steel pipe tower reinforcing bracket assembly according to the present invention, a test body (node steel pipe 8) equipped with various reinforcing bracket assemblies (I-IV type assemblies 20-50) shown in FIG. A proof stress test was conducted. The test results are shown in Table 1 and FIG. Each reinforcing bracket assembly was fixed to each test body with a standard tightening torque of M16 (74 N · m).

試験体は、図１４の（Ａ）、（Ｂ）に示すように、節点鋼管８を挟んで上下対称のガセットプレート５が溶接された節点鋼管８（以下、「標準型鋼管８ＡＢ」と言う。）と、図１４の（Ｃ）、（Ｄ）、（Ｅ）に示すように、節点鋼管８を挟んで上下非対称のガセットプレート５が溶接された節点鋼管８（以下、「異形型鋼管８ＣＥ」と言う。）とについて、各種補強金具組立体を装着したもの（補強有り）と、装着していないもの（補強無し）とに分類された。   As shown in FIGS. 14A and 14B, the test body is referred to as a nodal steel pipe 8 (hereinafter referred to as “standard steel pipe 8AB”) in which a vertically symmetrical gusset plate 5 is welded with the nodal steel pipe 8 interposed therebetween. ), And as shown in FIGS. 14C, 14D and 14E, a nodal steel pipe 8 (hereinafter referred to as “deformed steel pipe 8CE”) in which a vertically asymmetric gusset plate 5 is welded with the nodal steel pipe 8 interposed therebetween. Are classified into those equipped with various reinforcing metal fitting assemblies (with reinforcement) and those not equipped (without reinforcement).

（１）最大耐力と変形量
表１に最大耐力値とその時の変形量（扁平量）を示す。耐力値は、補強無し異形型鋼管８ＣＥ（試験体Ｎｏ．４）を基準にすると、補強有り標準型鋼管８ＡＢシリーズ（試験体Ｎｏ．２、３）では約４０％の耐力増加が見られ、また、補強有り異形型鋼管８ＣＥシリーズ（試験体Ｎｏ．５−８）では１４−４１％の耐力増加が見られた。

Figure 2007321358
(1) Maximum proof stress and deformation amount Table 1 shows the maximum proof stress value and the deformation amount (flat amount) at that time. With regard to the proof stress value based on the non-reinforced deformed shaped steel pipe 8CE (test body No. 4), the reinforced standard steel pipe 8AB series (test body No. 2, 3) shows an increase in the proof stress of about 40%. In the reinforced deformed shaped steel pipe 8CE series (test body No. 5-8), an increase in yield strength of 14-41% was observed.
Figure 2007321358

（２）残留変形状況
いずれの補強試験体も補強金具組立体の外側では変形が抑えられており、補強金具組立体の内側でのみ扁平化する傾向が現れた。 (2) Residual Deformation Situation of any of the reinforcing test specimens was suppressed on the outer side of the reinforcing bracket assembly, and a tendency to flatten only on the inner side of the reinforcing bracket assembly appeared.

（３）荷重−変形特性
図１５に荷重中心線上の鋼管変形量（扁平量）の特性を、各試験体の結果と併せて示す。今回実施したすべての試験体では初期荷重における扁平量は非常に小さく抑えられており、補強金具組立体の装着により変形量が大幅に減少している。試験体Ｎｏ．２（図１４の（Ａ））では、荷重１００ｋＮ以上で若干の剛性低下が見られるが、その他の試験体の変形特性は１５０ｋＮまでほぼ同様の特性を示している。試験体Ｎｏ．３、６、７、８（図１４の（Ｂ）、（Ｃ）、（Ｄ））ではさらに変形が大きいところまで追従して、耐力も最大で１８７ｋＮまで上昇している。 (3) Load-deformation characteristics FIG. 15 shows the characteristics of the deformation (flattening) of the steel pipe on the load center line together with the results of the respective test specimens. In all the test specimens carried out this time, the flatness at the initial load is very small, and the amount of deformation is greatly reduced by mounting the reinforcing bracket assembly. Specimen No. 2 ((A) of FIG. 14), although a slight decrease in rigidity is observed at a load of 100 kN or more, the deformation characteristics of the other test specimens show substantially the same characteristics up to 150 kN. Specimen No. In 3, 6, 7, and 8 ((B), (C), and (D) in FIG. 14), the deformation is further increased and the proof stress is increased to a maximum of 187 kN.

（４）結論
標準型鋼管８ＡＢでは、両端の変形を拘束した結果により、鋼管の変形量が大幅に減少し、両側装着の場合に装着セット数による補強効果の差異はなく、約４０％の耐力増加を示した。異形型鋼管８ＣＥでは、耐力増加率にバラツキが見られるが、１４％以上の補強効果が確認され、最大では４１％の耐力増加を示した。 (4) Conclusion With the standard type steel pipe 8AB, the deformation amount of the steel pipe is greatly reduced due to the restrained deformation at both ends, and there is no difference in the reinforcing effect depending on the number of installed sets when installed on both sides, and the proof stress is about 40%. Showed an increase. In the deformed steel pipe 8CE, although there was a variation in the rate of increase in yield strength, a reinforcement effect of 14% or more was confirmed, and the maximum increase in yield strength was 41%.

本発明は、鋼管鉄塔だけではなく、既設鋼管構造物の張出し片持ち梁等の補強にも広く適用可能である。また、形は長方形でなくても良く、鋼管を拘束できればよい。   The present invention is widely applicable not only to steel pipe towers but also to reinforcement of overhanging cantilever beams and the like of existing steel pipe structures. Moreover, the shape does not need to be rectangular, and it is sufficient if the steel pipe can be restrained.

本発明に基づく鋼管鉄塔用補強金具組立体の第１実施例の分解正面図である。It is a disassembled front view of 1st Example of the reinforcement metal fitting assembly for steel pipe towers based on this invention. 図１のＩＩ−ＩＩ線から見た補強金具組立体の横断面図である。FIG. 2 is a cross-sectional view of the reinforcing bracket assembly as viewed from the line II-II in FIG. 1. 図１の補強金具組立体の斜視図であって、組み立てられた状態を示す。It is a perspective view of the reinforcement metal fitting assembly of FIG. 1, Comprising: The assembled state is shown. 本発明に基づく補強金具組立体の第２実施例の分解正面図である。It is a disassembled front view of 2nd Example of the reinforcement metal fitting assembly based on this invention. 図４のＶ−Ｖ線から見た補強金具組立体の横断面図である。FIG. 5 is a cross-sectional view of the reinforcing metal fitting assembly as seen from the line VV in FIG. 4. 図４の補強金具組立体の斜視図であって、組み立てられた状態を示す。It is a perspective view of the reinforcement metal fitting assembly of FIG. 4, Comprising: The assembled state is shown. 本発明に基づく補強金具組立体の第３実施例の分解正面図である。It is a disassembled front view of 3rd Example of the reinforcement metal fitting assembly based on this invention. 図７のＶＩＩＩ−ＶＩＩＩ線から見た補強金具組立体の横断面図である。FIG. 8 is a cross-sectional view of the reinforcing metal fitting assembly as seen from the line VIII-VIII in FIG. 7. 図７の補強金具組立体の斜視図であって、組み立てられた状態を示す。It is a perspective view of the reinforcement metal fitting assembly of FIG. 7, Comprising: The assembled state is shown. 本発明に基づく補強金具組立体の第４実施例の分解正面図である。It is a disassembled front view of 4th Example of the reinforcement metal fitting assembly based on this invention. 図１０のＸＩ−ＸＩ線から見た補強金具組立体の横断面図である。It is a cross-sectional view of the reinforcing metal fitting assembly as seen from the line XI-XI in FIG. 図１０のＸＩＩ−ＸＩＩ線から見た補強金具組立体の第１ブロックの平面図である。It is a top view of the 1st block of the reinforcement metal fitting assembly seen from the XII-XII line of FIG. 図１０の補強金具組立体の斜視図であって、組み立てられた状態を示す。It is a perspective view of the reinforcement metal fitting assembly of FIG. 10, Comprising: The assembled state is shown. 各実施例の補強金具組立体を節点鋼管に固定した状態を示す説明図である。It is explanatory drawing which shows the state which fixed the reinforcement metal fitting assembly of each Example to the nodal steel pipe. 各実施例の補強金具組立体による鋼管補強効果試験結果を示すグラフである。It is a graph which shows the steel pipe reinforcement effect test result by the reinforcement metal fitting assembly of each Example. 従来の送電用鋼管鉄塔の腕金組立体取付け付近の骨組み側面図である。It is a skeleton side view near the arm bracket assembly attachment of the conventional steel tube tower for power transmission. 図１６の送電用鋼管鉄塔の円１７で囲んだ部分の拡大側面図である。It is an enlarged side view of the part enclosed with the circle | round | yen 17 of the steel pipe tower for electric power transmission of FIG. ガセットプレート溶接節点鋼管の一部の平面図（Ａ）、端面図（Ｂ）、（Ｃ）であって、ガセットプレートに作用する外力と節点鋼管の変形とを示す説明図である。It is a partial top view (A), end view (B), (C) of a gusset plate welded node steel pipe, and is an explanatory view showing external force acting on the gusset plate and deformation of the nodal steel pipe. 従来の鋼管鉄塔用補強金具の第１例の平面図（Ａ）および端面図（Ｂ）である。It is the top view (A) and end view (B) of the 1st example of the conventional steel tube tower reinforcement metal fitting. 従来の鋼管鉄塔用補強金具の第２例の平面図（Ａ）および端面図（Ｂ）である。It is the top view (A) and end elevation (B) of the 2nd example of the conventional reinforcing metal fitting for steel pipe towers. 従来の鋼管鉄塔用補強金具の第３例の平面図（Ａ）および端面図（Ｂ）である。It is the top view (A) and end elevation (B) of the 3rd example of the conventional steel pipe tower reinforcement metal fitting.

符号の説明Explanation of symbols

１ 送電用鋼管鉄塔 ２ 鉄塔本体
３ 腕金組立体 ４ 斜め吊上げ材取付け部
５ ガセットプレート ６ 鋼管
７ 腹材接合部 ８ 節点鋼管
９ サドル型スチフナ １０ リングスチフナ
２０ 第１実施例の補強金具組立体（Ｉ型組立体）
３０ 第２実施例の補強金具組立体（ＩＩ型組立体）
４０ 第３実施例の補強金具組立体（ＩＩＩ型組立体）
５０ 第４実施例の補強金具組立体（ＩＶ型組立体）
２１ 第１ブロック ２２ 第２ブロック
２３ ボルト ２４ ナット
３１ 第１ブロック ３１ 第２ブロック
４１ 第１ブロック ４２ 第２ブロック
５１ 第１ブロック ５２ 第２ブロック
５３ 第３ブロック ３１２、４１２ 突起
５１１ 連結基端部 ５１２ 腕部
２１１、２２１、３１１、３２１、４１１、４２１、５１３、５２３、５３３ 凹部
２１２、２２２、３１３、３２３、４１３、４２３、５１５、５２５、５３５ ボルト穴 DESCRIPTION OF SYMBOLS 1 Steel pipe tower for power transmission 2 Steel tower body 3 Arm bracket assembly 4 Diagonal lifting material attachment part 5 Gusset plate 6 Steel pipe 7 Abdominal material joint part 8 Node steel pipe 9 Saddle type stiffener 10 Ring stiffener 20 Reinforcing bracket assembly of the first embodiment ( Type I assembly)
30 Reinforcing Bracket Assembly (II Type Assembly) of Second Embodiment
40 Reinforcing bracket assembly (III type assembly) of the third embodiment
50 Reinforcing Bracket Assembly (IV Type Assembly) of Fourth Embodiment
21 1st block 22 2nd block 23 Bolt 24 Nut 31 1st block 31 2nd block 41 1st block 42 2nd block 51 1st block 52 2nd block 53 3rd block 312, 412 Protrusion 511 Connection base end 512 Arms 211, 221, 311, 321, 411, 421, 513, 523, 533 Recesses 212, 222, 313, 323, 413, 423, 515, 525, 535 Bolt holes

Claims (5)

既設鋼管鉄塔のガセットプレート溶接節点鋼管に装着される補強金具組立体であって、長方形平板形状の第１ブロックと、長方形平板形状の第２ブロックとからなり、各ブロックの長辺方向のほぼ中央に円弧状凹部が互いに対向して設けられかつ前記長辺方向両端に短辺方向に延びる同軸上ボルト穴が設けられ、各ブロックの前記凹部が前記節点鋼管の外周に接触し、前記両端の同軸上ボルト穴を貫通したボルトにナットを締め付けることによって前記各ブロックが前記節点鋼管に締結固定される、鋼管鉄塔用補強金具組立体。   Reinforcement fitting assembly to be attached to gusset plate welded node steel pipe of existing steel pipe tower, consisting of a rectangular flat plate-shaped first block and a rectangular flat plate-shaped second block, and approximately the center in the long side direction of each block Arc-shaped recesses are provided opposite to each other, and coaxial upper bolt holes extending in the short side direction are provided at both ends in the long side direction, the recesses of each block are in contact with the outer periphery of the nodal steel pipe, A steel pipe tower reinforcing bracket assembly, wherein each block is fastened and fixed to the nodal steel pipe by tightening a nut to a bolt penetrating the upper bolt hole. 既設鋼管鉄塔のガセットプレート溶接節点鋼管に装着される補強金具組立体であって、長方形平板状の第１ブロックと、長方形平板形状の第２ブロックとからなり、各ブロックの長辺方向の一端側に偏って円弧状凹部が互いに対向して設けられ、前記第１ブロックの前記長辺方向他端側に板厚方向に延びる突起が設けられ、各ブロックの他端側でかつ前記凹部寄りに短辺方向に延びる同軸上ボルト穴が設けられ、各ブロックの前記凹部が前記節点鋼管の外周に接触し、前記第１ブロックの突起が前記第２ブロックの内面に接触し、前記同軸上ボルト穴を貫通したボルトにナットを締め付けることによって前記各ブロックが前記節点鋼管に締結固定される、鋼管鉄塔用補強金具組立体。   A reinforcing bracket assembly to be mounted on a gusset plate welded node steel pipe of an existing steel pipe tower, comprising a rectangular flat plate-shaped first block and a rectangular flat plate-shaped second block, one end side of each block in the long side direction Arc-shaped recesses are provided so as to face each other, a protrusion extending in the plate thickness direction is provided on the other end side in the long side of the first block, and short on the other end side of each block and closer to the recess. A coaxial upper bolt hole extending in the side direction is provided, the concave portion of each block contacts the outer periphery of the nodal steel pipe, the projection of the first block contacts the inner surface of the second block, and the coaxial upper bolt hole is formed. A steel pipe tower reinforcing bracket assembly in which each block is fastened and fixed to the node steel pipe by tightening a nut to a penetrating bolt. 前記各ブロックの長辺の長さを短辺の長さに比べて大きく形成し、前記第１ブロックに設けた突起と前記同軸上ボルト穴との間の距離を大きく形成した、請求項２に記載の鋼管鉄塔用補強金具組立体。   The length of the long side of each block is formed larger than the length of the short side, and the distance between the protrusion provided on the first block and the coaxial upper bolt hole is formed large. The reinforcing metal fitting assembly for steel pipe towers as described. 前記第１ブロックの突起の頂部が長辺方向に円弧状に形成されている、請求項２または３に記載の鋼管鉄塔用補強金具組立体。   The steel pipe tower reinforcing metal bracket assembly according to claim 2 or 3, wherein a top portion of the protrusion of the first block is formed in an arc shape in a long side direction. 既設鋼管鉄塔のガセットプレート溶接節点鋼管に装着される補強金具組立体であって、長方形平板状の連結基端部および該連結基端部の両端からそれぞれ延びる長方形平板状の腕部を有していて平面視Ｕ字形状の第１ブロックと、該第１ブロックの連結基端部に対向する長方形平板状の第２ブロックと、前記第１ブロックの各腕部の自由端に対向する長方形平板状の第３ブロックとからなり、前記第１ブロックの連結基端部に前記第２ブロックに対向する円弧状凹部が設けられ、前記第２ブロックに前記連結基端部の凹部に対向する円弧状凹部が設けられ、前記第３ブロックに前記腕部間の空間に対向する円弧状凹部が設けられ、前記第１ブロックの連結基端部の両端および該第１ブロックの各腕部自由端、ならびに前記第２および第３ブロックの長辺両端にそれぞれ対応する同軸上ボルト穴が設けられ、前記各ブロックの凹部が前記節点鋼管の外周に接触し、前記各同軸上ボルト穴を貫通したボルトにナットを締め付けることによって前記各ブロックが前記節点鋼管に締結固定される、鋼管鉄塔用補強金具組立体。   A reinforcing metal fitting assembly to be mounted on a gusset plate welded node steel pipe of an existing steel pipe tower having a rectangular flat plate-like connecting base end portion and rectangular flat plate-like arm portions respectively extending from both ends of the connecting base end portion. A first block having a U-shape in plan view, a second block having a rectangular flat plate shape facing the connecting base end portion of the first block, and a rectangular flat plate shape facing the free end of each arm portion of the first block. An arc-shaped recess facing the second block at the connection base end of the first block, and an arc-shaped recess facing the recess at the connection base end of the second block. Arc-shaped recesses facing the space between the arm portions are provided in the third block, both ends of the connecting base end portion of the first block, each arm portion free end of the first block, and the Second and third bro Corresponding upper bolt holes corresponding to both ends of the long side of the bolt are provided, the recesses of the respective blocks are in contact with the outer periphery of the nodal steel pipe, and the respective nuts are tightened to the bolts penetrating the respective coaxial upper bolt holes. A reinforcing bracket assembly for a steel pipe tower, wherein a block is fastened and fixed to the nodal steel pipe.
JP2006149916A 2006-05-30 2006-05-30 Steel tube tower reinforcement bracket assembly Expired - Fee Related JP5001581B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507585A (en) * 2015-11-28 2016-04-20 福建省二建建设集团有限公司 Novel concrete formwork mounting tightener and mounting structure and mounting method thereof

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Publication number Priority date Publication date Assignee Title
JPH0337722U (en) * 1989-08-21 1991-04-11
JPH05146016A (en) * 1991-11-22 1993-06-11 Sumitomo Electric Ind Ltd Construction robot
JP2001207532A (en) * 2000-01-21 2001-08-03 Shimizu Corp Reinforcing structure of steel truss structure
JP2006028902A (en) * 2004-07-16 2006-02-02 Nippon Steel Corp Earthquake resistant reinforcing structure of existing steel tower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337722U (en) * 1989-08-21 1991-04-11
JPH05146016A (en) * 1991-11-22 1993-06-11 Sumitomo Electric Ind Ltd Construction robot
JP2001207532A (en) * 2000-01-21 2001-08-03 Shimizu Corp Reinforcing structure of steel truss structure
JP2006028902A (en) * 2004-07-16 2006-02-02 Nippon Steel Corp Earthquake resistant reinforcing structure of existing steel tower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507585A (en) * 2015-11-28 2016-04-20 福建省二建建设集团有限公司 Novel concrete formwork mounting tightener and mounting structure and mounting method thereof

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