JP2012047032A - Reinforcement structure of steel pipe steel tower - Google Patents

Reinforcement structure of steel pipe steel tower Download PDF

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JP2012047032A
JP2012047032A JP2011133325A JP2011133325A JP2012047032A JP 2012047032 A JP2012047032 A JP 2012047032A JP 2011133325 A JP2011133325 A JP 2011133325A JP 2011133325 A JP2011133325 A JP 2011133325A JP 2012047032 A JP2012047032 A JP 2012047032A
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steel pipe
reinforcing
main
steel
main column
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JP5563527B2 (en
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Yasumasa Kishimoto
Hirokazu Nakasuji
Nobuo Takeuchi
Kei Uchikawa
浩和 中筋
啓 内川
泰昌 岸本
信雄 竹内
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Kansai Electric Power Co Inc:The
Sakai Iron Works Co Ltd
株式会社酒井鉄工所
関西電力株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement structure of a steel pipe steel tower such as a transmission tower, which improves constructibility while securing high reinforcement strength.SOLUTION: A steel pipe steel tower includes a main column material 2 in which main column material steel pipes 10 comprising a steel pipe body portion 11 and flange portions 12 integrally formed at both the ends of the steel pipe body portion are connected to each other in longitudinal direction of the main column material steel pipes 10. A reinforcement structure of the steel pipe steel tower includes a plurality of reinforcing materials 22 which are elongated in the longitudinal directions of the main column material steel pipes 10 along the main column material steel pipes 10 in a plurality of three or more positions juxtaposed at regular intervals in the circumferential directions of the main column material steel pipes 10 on the periphery of the main column material steel pipes 10, and a plurality of fixing members 14 for fixing the reinforcing materials 22 to the main column material steel pipes 10. The reinforcing materials 22 are fixed only to the steel pipe body portions 11 of the main column material steel pipes 10 in a plurality of positions in the longitudinal directions of the reinforcing materials 22 by the fixing members 14, respectively.

Description

本発明は、送電用鉄塔や通信用鉄塔等の鋼管鉄塔の補強構造に関するものである。   The present invention relates to a reinforcing structure for steel pipe towers such as power transmission towers and communication towers.

全国には、送電用鉄塔や通信用鉄塔等、鋼管を主たる構造材とする数多くの鉄塔が建造されている。これらの鉄塔は、建造後に特定の部材に想定外の荷重がかかることが予想される場合や、経年劣化による強度低下が予想される場合に補強が必要となる。   Many steel towers with steel pipes as the main structural material have been built throughout the country, such as power transmission towers and communication towers. These steel towers need to be reinforced when an unexpected load is expected to be applied to a specific member after construction, or when strength reduction due to aging is expected.

例えば特許文献1には、そのための補強構造として、鋼管鉄塔の主柱材の補強構造が記載されている。この構造は、主柱材を構成する鋼管(主柱材鋼管)の両端フランジ部に各々支持プレートをボルトナットで固定し、主柱材鋼管の径方向両側に一対の鋼管補強材を添わせてこれら鋼管補強材の上下両端をそれぞれ各支持プレートにボルトナットで固定した上で、バンドと称する固定部材により各鋼管補強材の長手方向複数箇所と主柱材鋼管とを互いに固定したものである。   For example, Patent Document 1 describes a reinforcing structure for a main pillar material of a steel pipe tower as a reinforcing structure therefor. In this structure, each support plate is fixed with bolts and nuts to both end flanges of a steel pipe (main column steel pipe) that constitutes the main column material, and a pair of steel pipe reinforcements are attached to both sides in the radial direction of the main column material steel pipe. The upper and lower ends of these steel pipe reinforcing members are respectively fixed to the respective support plates with bolts and nuts, and a plurality of longitudinal portions of each steel pipe reinforcing member and the main columnar steel pipes are fixed to each other by a fixing member called a band.

特開2005−248487号公報JP 2005-248487 A

送電用鉄塔等の補強工事は、山中等、周辺環境が悪く、高所での作業が多いため施工性が良いものであるのが望ましい。しかしながら、上記従来の補強構造では、上下に隣接する主柱材鋼管のフランジ部同士を固定しているボルトを取り外し、当該フランジ部に支持プレートを重ねた上でこれらフランジ部と支持プレートとを新しいボルトナットで共締めし、これによりフランジ部に支持プレートを固定する。その上で、上下の各支持プレートに鋼管補強材をボルトナットで固定する必要があるため、施工に過大な時間と労力を要する。特に、主柱材鋼管のフランジ部同士を固定しているボルトナットは強固に締結されている上、錆の発生や塗装を伴う場合も多いため、上記のようなボルトナットの取外しには時間と技術を要する。   It is desirable that the reinforcement work for power transmission towers, etc. has good workability because the surrounding environment is bad, such as in the mountains, and there are many work in high places. However, in the above-described conventional reinforcing structure, the bolts fixing the flange portions of the main column steel pipes adjacent to each other in the vertical direction are removed, and the support plate is overlapped with the flange portion, and then the flange portion and the support plate are renewed. Tighten together with bolts and nuts, thereby fixing the support plate to the flange. In addition, since it is necessary to fix the steel pipe reinforcement to the upper and lower support plates with bolts and nuts, excessive time and labor are required for the construction. In particular, the bolts and nuts that fasten the flanges of the main column steel pipes are firmly fastened, and often involve rusting or painting. Requires technology.

また、鋼管鉄塔の補強は必ずしも主柱材に限らず、斜材や水平材等の腹材についても必要とされる場合がある。しかし、特許文献1に記載される補強構造は、鋼管鉄塔の主柱材の補強を対象とするものであって腹材の補強に適したものではなかった。従って、腹材についても、高い補強強度を得ることができかつ施工性の良い補強構造が望まれる。   In addition, reinforcement of the steel pipe tower is not necessarily limited to the main column material, but may be required for abdominal materials such as diagonal materials and horizontal materials. However, the reinforcing structure described in Patent Document 1 is intended to reinforce the main pillar material of the steel pipe tower and is not suitable for reinforcing the abdominal material. Therefore, a reinforcing structure that can obtain high reinforcement strength and good workability is also desired for the abdominal material.

本発明は、このような事情に鑑みて成されたものであり、送電用鉄塔や通信用鉄塔等の鋼管鉄塔の補強構造に関し、高い補強強度を確保しながら施工性を向上させることを目的とするものである。   This invention is made in view of such a situation, and relates to the reinforcement structure of steel pipe towers, such as a power transmission tower and a communication tower, and it aims at improving workability, ensuring high reinforcement strength. To do.

上記課題を解決するための本発明の一の局面による鋼管鉄塔の補強構造は、鋼管本体部とその両端に一体形成されるフランジ部とを有する複数の主柱材鋼管がその長手方向に互いに連結されることにより構成された主柱材を含む鋼管鉄塔の前記主柱材の補強構造であって、前記主柱材鋼管の周囲にあってその周方向に等間隔で並ぶ3箇所以上の複数の位置で当該主柱材鋼管に沿ってその長手方向に延びる複数の補強材と、これら補強材を前記主柱材鋼管に固定するための複数の固定部材とを含み、前記各補強材がそれらの長手方向の複数の位置でそれぞれ前記固定部材により前記主柱材鋼管の鋼管本体部にのみ固定されているものである。   A steel pipe tower reinforcing structure according to one aspect of the present invention for solving the above-described problem is that a plurality of main columnar steel pipes having a steel pipe main body part and flange parts integrally formed at both ends thereof are connected to each other in the longitudinal direction. It is a reinforcing structure of the main column material of the steel pipe tower including the main column material configured by being, a plurality of three or more locations around the main column material steel tube and arranged at equal intervals in the circumferential direction A plurality of reinforcing members extending in the longitudinal direction along the main column steel pipe at a position, and a plurality of fixing members for fixing the reinforcing members to the main column steel pipe. It is fixed only to the steel pipe main body portion of the main columnar steel pipe by the fixing member at a plurality of positions in the longitudinal direction.

この補強構造によれば、主柱材に働く座屈荷重を各補強材に応分に負担させつつ座屈変形を抑止する効果である座屈補剛効果によって主柱材を補強することができる。しかも、各補強材は主柱材鋼管の鋼管本体部にのみ固定されるため、施工に際して主柱材鋼管のフランジ部に補強材を固定することいった作業が不要となる。また、主柱材鋼管の周囲の3箇所以上の位置に等間隔で複数の補強材が配置されていることにより、ある程度高い補強強度が確保される。特に、このように補強材が配置されることで、主柱材鋼管の全周に亘って前記座屈補剛効果が均等化され、座屈荷重に対して高い補強効果を享受することが可能となる。   According to this reinforcing structure, it is possible to reinforce the main column member by a buckling stiffening effect that is an effect of suppressing buckling deformation while appropriately applying a buckling load acting on the main column member to each reinforcing member. In addition, since each reinforcing material is fixed only to the steel pipe main body of the main column steel pipe, the work of fixing the reinforcing material to the flange of the main column steel pipe is not required during construction. In addition, since a plurality of reinforcing members are arranged at equal intervals at three or more positions around the main columnar steel pipe, a certain level of reinforcing strength is ensured. In particular, by arranging the reinforcing material in this way, the buckling stiffening effect is equalized over the entire circumference of the main columnar steel pipe, and it is possible to enjoy a high reinforcing effect against the buckling load. It becomes.

なお、このような補強構造は、主柱材として中空鋼管構造のものに有用であることは勿論であるが、主柱材鋼管の内側にコンクリートが充填されたもの(以下、MC材と称する)を有する鋼管鉄塔(以下MC鉄塔と称する)についても有用である。特に、MC材の場合には、主柱材に局部変形が生じ難いため、簡易な構造で座屈荷重に対する高い補強効果を得ることが可能な上記の補強構造を適用すれば、構造の簡易さによる補強工事の施工性の向上と補強効果とのバランスのとれた補強構造を提供することが可能となる。   Such a reinforcing structure is of course useful for a hollow steel pipe structure as a main column material, but concrete is filled inside the main column material steel tube (hereinafter referred to as MC material). It is also useful for steel pipe towers (hereinafter referred to as MC towers). In particular, in the case of MC material, local deformation is unlikely to occur in the main column material. Therefore, if the above-described reinforcing structure capable of obtaining a high reinforcing effect against buckling load is applied with a simple structure, the structure can be simplified. Therefore, it is possible to provide a reinforcing structure that balances the improvement of the workability of reinforcing work and the reinforcing effect.

また、本発明の他の一の局面による鋼管鉄塔の補強構造は、複数の主柱材と、鋼管本体部及びその両端に設けられる連結部を備えかつ当該連結部を介して前記主柱材に連結される腹材とを含む鋼管鉄塔の前記腹材の補強構造であって、前記腹材の周囲であってその周方向に等間隔で並ぶ3箇所以上の複数の位置で当該腹材に沿ってその長手方向に延びる複数の補強材と、これら補強材を前記腹材に固定するための複数の固定部材とを含み、前記各補強材がそれらの長手方向の複数の位置でそれぞれ前記固定部材により前記腹材の鋼管本体部にのみ固定されているものである。なお、「腹材」とは、鋼管鉄塔を構成する軸状の部材のうち、斜材や水平材等、主柱材を除く部材を意味する。   Further, a steel pipe tower reinforcing structure according to another aspect of the present invention includes a plurality of main pillar materials, a steel pipe main body portion and connecting portions provided at both ends thereof, and the main pillar material via the connecting portions. It is a reinforcing structure of the abdominal material of the steel pipe tower including the abdomen to be connected, and is along the abdomen at a plurality of three or more positions around the abdomen and arranged at equal intervals in the circumferential direction. A plurality of reinforcing members extending in the longitudinal direction of the lever, and a plurality of fixing members for fixing the reinforcing members to the abdomen, wherein each of the reinforcing members is at the plurality of positions in the longitudinal direction. Is fixed only to the steel pipe body of the abdomen. The “abdomen” means a member excluding the main pillar material, such as a diagonal member and a horizontal member, among shaft-like members constituting the steel pipe tower.

この補強構造によれば、腹材に働く座屈荷重を各補強材に応分に負担させつつ座屈変形を抑止する効果である座屈補剛効果によって腹材を補強することができる。また、腹材の周囲の3箇所以上の位置に等間隔で複数の補強材が配置されていることにより、ある程度高い補強強度が確保されるとともに、このように補強材が配置されることで、腹材の全周に亘って前記座屈補剛効果が均等化され、座屈荷重に対して高い補強効果を享受することが可能となる。   According to this reinforcing structure, the abdominal material can be reinforced by a buckling stiffening effect which is an effect of suppressing buckling deformation while appropriately applying a buckling load acting on the abdominal material to each reinforcing material. In addition, by arranging a plurality of reinforcing materials at equal intervals at three or more positions around the abdominal material, a certain level of high reinforcing strength is ensured, and in this way the reinforcing material is arranged, The buckling stiffening effect is equalized over the entire circumference of the abdomen, and it becomes possible to enjoy a high reinforcing effect against the buckling load.

以上説明したように、本発明の一の局面による鋼管鉄塔の補強構造によれば、主柱材鋼管のフランジ部に補強材を固定するといった作業を伴うことなく主柱材についてある程度高い補強強度を確保することが可能となるため、送電用鉄塔や通信用鉄塔等の鋼管鉄塔の主柱材の補強構造に関し、高い補強強度を確保しつつ施工性を向上させることができる。   As described above, according to the steel tube tower reinforcing structure according to one aspect of the present invention, the main column material has a somewhat high reinforcing strength without the work of fixing the reinforcing material to the flange portion of the main column material steel pipe. Since it becomes possible to ensure, regarding the reinforcement structure of the main pillar material of steel pipe towers, such as a power transmission tower and a communication tower, workability can be improved, ensuring high reinforcement strength.

また、本発明の他の一の局面による鋼管鉄塔の補強構造によれば、斜材や水平材等の腹材の鋼管本体部に固定することである程度高い補強強度を確保することが可能であり、送電用鉄塔や通信用鉄塔等の鋼管鉄塔の腹材について高い補強強度を確保しつつ施工性を向上させることができる。   In addition, according to the steel pipe tower reinforcing structure according to another aspect of the present invention, it is possible to secure a certain level of reinforcing strength by fixing to a steel pipe main body portion of an abdomen such as diagonal or horizontal material. In addition, it is possible to improve the workability while securing a high reinforcing strength for the abdominal material of the steel pipe tower such as the power transmission tower and the communication tower.

本発明の補強構造が適用された鋼管鉄塔の一部分を模式的に示す側面図である。It is a side view which shows typically a part of steel pipe tower to which the reinforcement structure of this invention was applied. 主柱材の補強構造を示す鋼管鉄塔の要部拡大図である。It is a principal part enlarged view of the steel pipe tower which shows the reinforcement structure of the main pillar material. 図2のIII−III線断面図である。It is the III-III sectional view taken on the line of FIG. 斜材(腹材)の補強構造を示す鋼管鉄塔の要部拡大図である。It is a principal part enlarged view of the steel pipe tower which shows the reinforcement structure of a diagonal (abdominal material).

以下、添付図面を参照しながら本発明の好ましい実施の一形態について詳述する。   Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

図1は、本発明が適用された鋼管鉄塔の一部分を模式的に示している。この図に示す鋼管鉄塔は、例えば正方形基礎面の四隅部から高さ方向に延びる主柱材2と、隣接する主柱材2の間に設けられる斜材3a及び水平材3b等の腹材3とを含む。   FIG. 1 schematically shows a part of a steel pipe tower to which the present invention is applied. The steel pipe tower shown in this figure includes, for example, a main column member 2 extending in the height direction from four corners of a square base surface, and an abdominal member 3 such as a diagonal member 3a and a horizontal member 3b provided between adjacent main column members 2. Including.

主柱材2は、同図に示すように複数の主柱材鋼管10がその長手方向に互いに連結されることにより構成されている。これらの主柱材鋼管10は、図2に示すように、鋼管本体部11とその長手方向両端に一体に設けられるフランジ部12とを有しており、上下方向に並ぶ各主柱材鋼管10のフランジ部12同士が図外のボルトナットにより締結されることにより主柱材2が構築されている。なお、各主柱材鋼管10はMC材である。   As shown in the figure, the main pillar material 2 is constituted by connecting a plurality of main pillar material steel pipes 10 to each other in the longitudinal direction. As shown in FIG. 2, these main columnar steel pipes 10 have a steel pipe main body part 11 and flange parts 12 provided integrally at both ends in the longitudinal direction, and the main columnar steel pipes 10 arranged in the vertical direction. The main pillar member 2 is constructed by fastening the flange portions 12 with bolts and nuts outside the figure. In addition, each main pillar material steel pipe 10 is MC material.

また、これら主柱材鋼管10の鋼管本体部11の途中部分には、溶接等の手段によりガセットプレート(図示省略)が一体に設けられており、前記腹材3の末端部分がこのガセットプレートに固定されている。   Further, a gusset plate (not shown) is integrally provided in the middle portion of the steel pipe main body 11 of the main columnar steel pipe 10 by means such as welding, and the end portion of the abdomen 3 is attached to the gusset plate. It is fixed.

この鋼管鉄塔の主柱材2のうち一部分には、補強材22が固定されることにより補強が施されている。図2及び図3は、その補強構造を具体的に示している。   A part of the main pillar 2 of the steel pipe tower is reinforced by fixing a reinforcing member 22. 2 and 3 specifically show the reinforcing structure.

同図に示すように、主柱材2を構成する特定の主柱材鋼管10の周囲、具体的には周方向に等間隔(90°間隔)で並ぶ4箇所の位置には、当該主柱材鋼管10の長手方向に沿って延びる補強材22がそれぞれ配されている。各補強材22は、長手方向の複数の位置でそれぞれバンドと称する固定部材14により主柱材鋼管10の前記鋼管本体部11に固定されている。当実施形態では、各補強材22は、その長手方向の各7箇所の位置で鋼管本体部11に固定されている。当実施形態において、各補強材22は、図3に示すように、主柱材鋼管10の長手方向に延びる一対のアングル材24であるが、各補強材22は、アングル材24に限定されるものではなく、平鋼材や鋼管材などを採用することも可能である。他方、各固定部材14は、図3に示すように、フランジ部16を両端にもつハーフパイプ型の一対の分割片14a、14bからなり、これら分割片14a、14bが鋼管本体部11をその径方向に挟持するように当該鋼管本体部11の外周面上に配置された上で、前記フランジ部16同士がボルトナット18により締結されることにより鋼管本体部11に固定されている。各固定部材14の外周面上には、周方向に等間隔で並びかつ主柱材鋼管10を中心として放射状に延びる3つ以上(図3では4つ)の板状の補強材取付部20が突設されている。そして、前記一対のアングル材24が補強材取付部20をその厚み方向に挟持するように各固定部材14の当該補強材取付部20にそれぞれ重ねられた上で、ボルトナット26によりこれらアングル材24が補強材取付部20に締結されることによって、各補強材22が各固定部材14を介して主柱材鋼管10の鋼管本体部11に固定されている。   As shown in the figure, the main pillar is located at four positions around the specific main pillar steel pipe 10 constituting the main pillar 2, specifically at equal intervals (90 ° intervals) in the circumferential direction. Reinforcing members 22 extending along the longitudinal direction of the steel pipe 10 are disposed. Each reinforcing member 22 is fixed to the steel pipe main body 11 of the main columnar steel pipe 10 by fixing members 14 called bands at a plurality of positions in the longitudinal direction. In the present embodiment, each reinforcing member 22 is fixed to the steel pipe body 11 at seven positions in the longitudinal direction. In the present embodiment, each reinforcing member 22 is a pair of angle members 24 extending in the longitudinal direction of the main column steel pipe 10 as shown in FIG. 3, but each reinforcing member 22 is limited to the angle member 24. It is also possible to adopt a flat steel material, a steel pipe material, etc. instead of a thing. On the other hand, as shown in FIG. 3, each fixing member 14 is composed of a pair of half-pipe split pieces 14a and 14b having flange portions 16 at both ends, and these split pieces 14a and 14b have the diameter of the steel pipe main body 11 as its diameter. After being arranged on the outer peripheral surface of the steel pipe main body part 11 so as to be sandwiched in the direction, the flange parts 16 are fastened to the steel pipe main body part 11 by fastening with bolts and nuts 18. On the outer peripheral surface of each fixing member 14, three or more (four in FIG. 3) plate-shaped reinforcing material mounting portions 20 are arranged in the circumferential direction at equal intervals and extend radially about the main columnar steel pipe 10. Projected. The pair of angle members 24 are overlapped with the reinforcing member attaching portions 20 of the fixing members 14 so as to sandwich the reinforcing member attaching portions 20 in the thickness direction, and then the angle members 24 are tightened by bolts and nuts 26. Are fastened to the reinforcing member attaching portion 20, whereby each reinforcing member 22 is fixed to the steel pipe main body portion 11 of the main columnar steel pipe 10 via each fixing member 14.

以上のような補強材22による主柱材2の補強は、例えば次のような手順で施工することが可能である。まず、各固定部材14を所定間隔で主柱材鋼管10の鋼管本体部11に固定する。次に、各補強材22のアングル材24を固定部材14のうち鋼管本体部11の上下両端の固定部材14に対してボルトナット26で締結した後、残りの固定部材14に対して各アングル材24を順次ボルトナット26で締結するようにする。そして、最終的に全てのボルトナット26を所定のトルクで締結する。   The reinforcement of the main pillar material 2 with the reinforcing material 22 as described above can be performed by the following procedure, for example. First, each fixing member 14 is fixed to the steel pipe main body 11 of the main columnar steel pipe 10 at a predetermined interval. Next, after the angle members 24 of the reinforcing members 22 are fastened with bolts and nuts 26 to the fixing members 14 at both the upper and lower ends of the steel pipe main body 11 among the fixing members 14, the angle members 24 are fixed to the remaining fixing members 14. 24 are sequentially fastened by bolts and nuts 26. Finally, all the bolts and nuts 26 are fastened with a predetermined torque.

以上説明したような鋼管鉄塔の補強構造によれば、主柱材2に働く座屈荷重を各補強材22に応分に負担させつつその座屈補剛効果によって主柱材2を補強することができる。しかも、この構造では、各補強材22は主柱材鋼管10の鋼管本体部11にのみ固定され、フランジ部12から各補強材22が切り離された構造であるため、従来のように、施工に際して上下の主柱材2のフランジ部同士を締結するボルトナットを取り外して当該フランジ部に補強材を取り付け、再度固定するといった作業が不要であり、これによって非常に簡単に施工することが可能となる。また、上記のように、主柱材鋼管10の周囲の4箇所の位置に等間隔で補強材22が配置されていることにより、ある程度高い補強強度を確保することも可能である。特に、このような補強材22の配置によれば、主柱材2(主柱材鋼管10)の全周に亘って前記座屈補剛効果が均等化されるため、座屈荷重に対して高い補強効果を享受することが可能である。従って、この補強構造によれば、高い補強強度を確保しつつその施工性を向上させることができる。なお、主柱材2(主柱材鋼管10)の全周に亘って座屈補剛効果を均等化する観点からは、主柱材鋼管10の周囲の3箇所以上の位置に等間隔で補強材22が配置されていれば良いが、実施形態のように4箇所又はそれ以上の偶数箇所に等間隔で補強材22が位置する構造によれば、固定部材14を構成する分割片14a、14bを共通化できるというメリットがある。   According to the steel pipe tower reinforcing structure as described above, the main column member 2 can be reinforced by the buckling stiffening effect while appropriately applying the buckling load acting on the main column member 2 to each reinforcing member 22. it can. In addition, in this structure, each reinforcing member 22 is fixed only to the steel pipe main body 11 of the main columnar steel pipe 10 and each reinforcing member 22 is separated from the flange portion 12. There is no need to remove the bolts and nuts that fasten the flange portions of the upper and lower main column members 2, attach the reinforcing material to the flange portions, and re-fix the flange portions. This makes it possible to perform construction very easily. . In addition, as described above, the reinforcing members 22 are arranged at equal intervals around the four positions around the main columnar steel pipe 10, so that a certain level of reinforcing strength can be secured. In particular, according to such an arrangement of the reinforcing member 22, the buckling stiffening effect is equalized over the entire circumference of the main column member 2 (main column member steel pipe 10). It is possible to enjoy a high reinforcing effect. Therefore, according to this reinforcement structure, the workability can be improved while ensuring high reinforcement strength. In addition, from the viewpoint of equalizing the buckling stiffening effect over the entire circumference of the main column member 2 (main column member steel pipe 10), reinforcement is performed at equal intervals at three or more positions around the main column member steel tube 10. The material 22 may be arranged, but according to the structure in which the reinforcing material 22 is located at equal intervals at four or more even positions as in the embodiment, the divided pieces 14a and 14b constituting the fixing member 14 are used. There is an advantage that can be shared.

加えて、この実施形態では、主柱材2として主柱材鋼管10(鋼管本体部11)をMC材としたいわゆるMC鉄塔に上記補強構造を適用しているため次のような利点もある。すなわち、MC材である主柱材2は、それ自体が特に軸方向荷重に対して高い強度を有し、比較的局部変形が生じ難いため、簡易な構造で座屈荷重に対して高い補強効果を得ることが可能な上記のような補強構造を適用すれば、補強工事の施工性を高めることと補強効果とのバランスのとれた補強構造を提供することが可能となる。   In addition, in this embodiment, since the reinforcing structure is applied to a so-called MC steel tower in which the main column material steel pipe 10 (steel pipe main body 11) is used as the MC material as the main column material 2, there are the following advantages. That is, the main pillar material 2 which is an MC material itself has a high strength particularly against an axial load and is relatively difficult to be locally deformed. If the above-described reinforcing structure capable of obtaining the above is applied, it is possible to provide a reinforcing structure in which the workability of the reinforcing work is improved and the reinforcing effect is balanced.

また、この補強構造によれば、各補強材22は一般的なアングル材24からなるものであって固定用のボルト孔が形成されている点を除き、特殊な継手構造を設けることなく固定部材14への固定が可能である。そのため、補強材22を簡単かつ安価に製作することが可能であり、これによって施工コストを抑制することができるという利点もある。   Further, according to this reinforcing structure, each reinforcing member 22 is made of a general angle member 24, and a fixing member is provided without providing a special joint structure except that a fixing bolt hole is formed. 14 can be fixed. Therefore, it is possible to manufacture the reinforcing material 22 easily and inexpensively, and there is also an advantage that the construction cost can be suppressed.

なお、補強材22による上記の補強構造は、主柱材2に限らず斜材3aや水平材3b等の腹材3についても同様に適用可能である。図4はその一例を示している。   Note that the above-described reinforcing structure by the reinforcing material 22 is not limited to the main pillar material 2 and can be similarly applied to the belly material 3 such as the diagonal material 3a and the horizontal material 3b. FIG. 4 shows an example.

同図は、図1中に二点鎖線で示すように補強材22により斜材3aを補強した場合の要部拡大図である。同図に示すように、斜材3aは、鋼管本体部30とその長手方向両端に一体に設けられる連結部32とを有し、主柱材鋼管10のガセットプレート13に対して前記連結部32がボルトナットで締結されることにより主柱材2に連結されている。   This figure is an enlarged view of a main part when the diagonal member 3a is reinforced by the reinforcing member 22 as shown by a two-dot chain line in FIG. As shown in the figure, the diagonal member 3 a has a steel pipe main body 30 and connecting portions 32 provided integrally at both ends in the longitudinal direction, and the connecting portion 32 with respect to the gusset plate 13 of the main columnar steel pipe 10. Are connected to the main pillar 2 by being fastened with bolts and nuts.

そして、この斜材3aの鋼管本体部30の周囲、具体的には周方向に等間隔(90°間隔)で並ぶ4箇所の位置に補強材22がそれぞれ配され、これら補強材22がそれらの長手方向の複数の位置でそれぞれ固定部材14により前記鋼管本体部30に固定されている。なお、補強材22や固定部材14は、斜材3aに適したサイズとされる以外、基本的な構造は主柱材2の補強に用いられるもの(図2及び図3参照)と同等であり、従って、施工手順も主柱材2の補強と同等の手順で行うことができる。   Reinforcing members 22 are arranged around the steel pipe main body 30 of the diagonal member 3a, specifically, at four positions arranged at equal intervals (90 ° intervals) in the circumferential direction. It is fixed to the steel pipe body 30 by a fixing member 14 at a plurality of positions in the longitudinal direction. The basic structure of the reinforcing material 22 and the fixing member 14 is the same as that used to reinforce the main pillar material 2 (see FIGS. 2 and 3), except that the size is suitable for the diagonal material 3a. Therefore, the construction procedure can also be performed in the same procedure as the reinforcement of the main pillar material 2.

このような斜材3aの補強構造によれば、斜材3aに働く座屈荷重を各補強材22に応分に負担させつつその座屈補剛効果によって斜材3aを補強することが可能であり、しかも、各補強材22は斜材3aの鋼管本体部30にのみ固定されるため非常に簡単に施工することが可能である。従って、上述した主柱材2の補強構造の場合と同等の作用効果を享受することができる。以上、図4を用いて斜材3aの補強構造について説明したが、水平材3b等の他の腹材3についても同様である。   According to such a reinforcing structure of the diagonal member 3a, the diagonal member 3a can be reinforced by its buckling stiffening effect while appropriately applying the buckling load acting on the diagonal member 3a to each reinforcing member 22. Moreover, since each reinforcing member 22 is fixed only to the steel pipe body 30 of the diagonal member 3a, it can be constructed very easily. Therefore, it is possible to enjoy the same operational effects as in the case of the reinforcing structure of the main column member 2 described above. While the reinforcing structure of the diagonal member 3a has been described with reference to FIG. 4, the same applies to other abdominal members 3 such as the horizontal member 3b.

なお、上述した鋼管鉄塔およびその補強構造は、本発明の好ましい実施形態の例示であってその具体的な構成は本発明の要旨を逸脱しない範囲で適宜変更が可能である。   The above-described steel pipe tower and its reinforcing structure are exemplifications of preferred embodiments of the present invention, and the specific configuration thereof can be appropriately changed without departing from the gist of the present invention.

2 主柱材
3 腹材
3a 斜材
3b 水平材
10 主柱材鋼管
11 鋼管本体部
12 フランジ部
13 ガセットプレート
14 固定部材
22 補強材
24 アングル材
30 鋼管本体部
32 連結部
2 Main column material 3 Abdominal material 3a Diagonal material 3b Horizontal material 10 Main column material steel pipe 11 Steel pipe body part 12 Flange part 13 Gusset plate 14 Fixing member 22 Reinforcement material 24 Angle material 30 Steel pipe body part 32 Connection part

Claims (3)

  1. 鋼管本体部とその両端に一体形成されるフランジ部とを有する複数の主柱材鋼管がその長手方向に互いに連結されることにより構成された主柱材を含む鋼管鉄塔の前記主柱材の補強構造であって、前記主柱材鋼管の周囲であってその周方向に等間隔で並ぶ3箇所以上の複数の位置で当該主柱材鋼管に沿ってその長手方向に延びる複数の補強材と、これら補強材を前記主柱材鋼管に固定するための複数の固定部材とを含み、前記各補強材がそれらの長手方向の複数の位置でそれぞれ前記固定部材により前記主柱材鋼管の鋼管本体部にのみ固定されていることを特徴とする鋼管鉄塔の補強構造。   Reinforcement of the main column material of a steel pipe tower including a main column material formed by connecting a plurality of main column material steel pipes having a steel pipe main body part and flange parts integrally formed at both ends thereof in the longitudinal direction thereof A plurality of reinforcing members extending in the longitudinal direction along the main columnar steel pipe at a plurality of three or more positions around the main columnar steel pipe and arranged at equal intervals in the circumferential direction, A plurality of fixing members for fixing these reinforcing members to the main column steel pipe, and each reinforcing member is a steel pipe body portion of the main column steel pipe by the fixing members at a plurality of positions in the longitudinal direction. A steel tube tower reinforcement structure characterized by being fixed only to
  2. 請求項1に記載の鋼管鉄塔の補強構造において、前記主柱材は、前記主柱材鋼管の内側にコンクリートが充填されたMC材であることを特徴とする鋼管鉄塔の補強構造。   The steel pipe tower reinforcement structure according to claim 1, wherein the main pillar material is an MC material in which concrete is filled inside the main pillar steel pipe.
  3. 複数の主柱材と、鋼管本体部及びその両端に設けられる連結部を備えかつ当該連結部を介して前記主柱材に連結される腹材とを含む鋼管鉄塔の前記腹材の補強構造であって、
    前記腹材の周囲であってその周方向に等間隔で並ぶ3箇所以上の複数の位置で当該腹材に沿ってその長手方向に延びる複数の補強材と、これら補強材を前記腹材に固定するための複数の固定部材とを含み、前記各補強材がそれらの長手方向の複数の位置でそれぞれ前記固定部材により前記腹材の鋼管本体部にのみ固定されていることを特徴とする鋼管鉄塔の補強構造。
    In the reinforcing structure of the abdominal member of the steel tube tower, including a plurality of main pillar members, a steel pipe main body part and a abdomen provided with connecting parts provided at both ends thereof and connected to the main pillar material via the connecting parts. There,
    A plurality of reinforcements extending in the longitudinal direction along the abdomen at a plurality of positions around the abdomen and arranged at equal intervals in the circumferential direction, and the reinforcements are fixed to the abdomen A plurality of fixing members, and each reinforcing member is fixed only to a steel pipe body portion of the abdomen by the fixing members at a plurality of positions in the longitudinal direction thereof. Reinforcement structure.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017118362A1 (en) * 2016-01-07 2017-07-13 中兴通讯股份有限公司 Telecommunication tower

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JPH06330643A (en) * 1990-12-29 1994-11-29 Tetsuhiko Aoki Buckling strength reinforcement for already existing truss structure
JP2001207532A (en) * 2000-01-21 2001-08-03 Shimizu Corp Reinforcing structure of steel truss structure
JP2003147864A (en) * 2001-11-08 2003-05-21 Hitachi Zosen Corp Joint construction and joint portion reinforcing construction for concrete filling steel pipe
JP2005282339A (en) * 2004-03-02 2005-10-13 Kyushu Electric Power Co Inc Structure for reinforcing hollow-steel-pipe steel tower by using splice l-shaped material
JP2006028902A (en) * 2004-07-16 2006-02-02 Chubu Electric Power Co Inc Earthquake resistant reinforcing structure of existing steel tower
JP2009215801A (en) * 2008-03-11 2009-09-24 Kanden Engineering:Kk Method of partially repairing main pole member of existing hollow steel pipe tower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06330643A (en) * 1990-12-29 1994-11-29 Tetsuhiko Aoki Buckling strength reinforcement for already existing truss structure
JP2001207532A (en) * 2000-01-21 2001-08-03 Shimizu Corp Reinforcing structure of steel truss structure
JP2003147864A (en) * 2001-11-08 2003-05-21 Hitachi Zosen Corp Joint construction and joint portion reinforcing construction for concrete filling steel pipe
JP2005282339A (en) * 2004-03-02 2005-10-13 Kyushu Electric Power Co Inc Structure for reinforcing hollow-steel-pipe steel tower by using splice l-shaped material
JP2006028902A (en) * 2004-07-16 2006-02-02 Chubu Electric Power Co Inc Earthquake resistant reinforcing structure of existing steel tower
JP2009215801A (en) * 2008-03-11 2009-09-24 Kanden Engineering:Kk Method of partially repairing main pole member of existing hollow steel pipe tower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017118362A1 (en) * 2016-01-07 2017-07-13 中兴通讯股份有限公司 Telecommunication tower

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