JP2013189749A - Framework structure of iron tower - Google Patents

Framework structure of iron tower Download PDF

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JP2013189749A
JP2013189749A JP2012054602A JP2012054602A JP2013189749A JP 2013189749 A JP2013189749 A JP 2013189749A JP 2012054602 A JP2012054602 A JP 2012054602A JP 2012054602 A JP2012054602 A JP 2012054602A JP 2013189749 A JP2013189749 A JP 2013189749A
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diagonal
series
disposed
members
steel
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JP5891077B2 (en
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Isamu Matsushige
勇 松重
Yoshinori Uchida
善規 内田
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Chugoku Electric Power Co Inc:The
中国電力株式会社
Ag Ajikawa Corp
安治川鉄工株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a framework structure capable of reinforcing a diagonal bracing disposed on a structure plane of an iron tower.SOLUTION: In the framework structure of an iron tower including a first diagonal bracing 4 disposed between main column members 3, 3 and a second diagonal bracing 5 disposed between the main column members 3, 3 so as to cross the first diagonal bracing 4, the first diagonal bracing 4 is constituted of a first front side diagonal bracing member 40 and a first back side diagonal bracing member arranged in parallel on the front and back, and the second diagonal bracing 5 is constituted of a second front side diagonal bracing member 50 and a second back side diagonal bracing member arranged in parallel on the front and back. The first front side diagonal bracing members 40, 40 are bisected and arranged in series on the same straight line, the second front side diagonal bracing member 50 is disposed through between opposite ends of the first front side diagonal bracing members 40, 40 that are bisected and arranged in series on the same straight line, the first back side diagonal bracing member is arranged through and the second back side diagonal bracing member is arranged in series.

Description

本発明は、送電用鉄塔や無線用鉄塔に適用される鉄塔の骨組構造に関する。   The present invention relates to a steel frame structure applied to a power transmission tower or a radio tower.

従来の送電用鉄塔や無線鉄塔の構造としては、主柱材および腹材に鋼管を使用した鋼管鉄塔と、主柱材および腹材に山型鋼を使用した山型鋼鉄塔と、主柱材に鋼管を使用し、腹材に山型鋼を使用したPL鉄塔とに大別される。   Conventional power transmission towers and radio towers include steel pipe towers that use steel pipes for the main pillar and abdomen, mountain steel towers that use angle steel for the main pillars and abdomen, and steel pipes for the main pillars. Is roughly divided into a PL steel tower using mountain steel for the abdomen.

鋼管鉄塔は、大型鉄塔に適用される。利点としては、鋼管の受ける風圧が山型鋼に比べて小さく、単一材としての強度が優れているため、鉄塔全体の重量が小さい。しかし、鋼管の内面の状況の把握が難しく、資材単価が高く、加工に高度な溶接技術を要するという欠点がある。   A steel pipe tower is applied to a large steel tower. As an advantage, since the wind pressure received by the steel pipe is smaller than that of the angle steel and the strength as a single material is excellent, the weight of the entire steel tower is small. However, there are drawbacks in that it is difficult to grasp the state of the inner surface of the steel pipe, the material unit price is high, and advanced welding technology is required for processing.

山型鋼鉄塔は、小中規模の鉄塔に適用される。利点としては、開放断面で外観点検により腐食状況を把握できる。また、資材単価が安く、加工は容易な切断や孔あけが主体である。欠点としては、鉄塔重量が鋼管鉄塔よりも大きくなり、基礎荷重増加により工事費が増大する。   The mountain steel tower is applied to small and medium-sized steel towers. As an advantage, the corrosion status can be grasped by visual inspection on an open section. In addition, the unit price of the material is low, and the processing is mainly easy cutting and drilling. As a disadvantage, the weight of the steel tower becomes larger than that of the steel pipe steel tower, and the construction cost increases due to an increase in the basic load.

PL鉄塔は、主柱材については、鋼管鉄塔の特徴を有する。腹材については、山型鋼鉄塔の特徴を有する。   The PL steel tower has the characteristics of a steel pipe steel tower for the main pillar material. The belly has the characteristics of a mountain steel tower.

また、これらの鉄塔の骨組み構造としては、四角鉄塔と、矩形鉄塔とが一般的に知られている。四角鉄塔は、電線路の方向に対する強度と、電線路に対して直交方向の強度とが等しくなるように設計され、4面が同一形状の構面を有している。矩形鉄塔は、電線路の方向に対する強度と、電線路に対して直交方向の強度とが異なるように設計され、平行する2面が同一形状の構面を有している。   Moreover, as a framework structure of these steel towers, a square steel tower and a rectangular steel tower are generally known. The square steel tower is designed so that the strength in the direction of the electric line is equal to the strength in the direction perpendicular to the electric line, and four surfaces have the same shape. The rectangular steel tower is designed so that the strength with respect to the direction of the electric wire and the strength in the direction perpendicular to the electric wire are different, and the two parallel surfaces have the same shape.

ここで、PL鉄塔の骨組構造について説明する。該骨組構造は、脚部と、本体部と、アームとを備えている。脚部は、鉄塔の本体およびアームを支持できるように骨組みされる。本体部は、アームに架設される送電線を所定の高さで支持できるように骨組みされる。アームは、複数の鉄塔の間に、3本の送電線を所定の間隔をおいて架設できるように骨組みされる。   Here, the framework structure of the PL steel tower will be described. The frame structure includes a leg portion, a main body portion, and an arm. The legs are framed to support the tower body and arms. The main body is framed so that the power transmission line installed on the arm can be supported at a predetermined height. The arm is framed so that three power transmission lines can be installed at a predetermined interval between a plurality of steel towers.

そして、これらの部位の骨組みは、主柱材と、水平材と、斜材(腹材)とにより構成される。   And the frame of these parts is constituted by a main pillar material, a horizontal material, and a diagonal material (abdomen).

主柱材は、鋼管材が使用され、地盤に埋設された、仮想輪郭線が四角形状の基礎体の四隅に支持されている。そして、主柱材は、所定の高さに到達するように、所定長さのものが軸方向に複数連結される。主柱材の連結は、下側の主柱材の端部に形成されたフランジと、上側の主柱材の端部に形成されたフランジとが接合されて、両フランジがボルト・ナットにより締結される。   Steel pipes are used as the main pillar material, and virtual contour lines embedded in the ground are supported at the four corners of the rectangular base body. A plurality of main column members having a predetermined length are connected in the axial direction so as to reach a predetermined height. The main column material is connected by joining the flange formed at the end of the lower main column and the flange formed at the end of the upper main column, and fastening both flanges with bolts and nuts. Is done.

水平材は、山型鋼が使用され、4本の主柱材の間に、主柱材の軸方向に所定の間隔をおいて水平方向に配置されるとともに、水平材のそれぞれの両端部が4本の柱材に連結されている。そして、主柱材と水平材との連結によって、鉄塔を、平面、左右の側面、前面、後面から見て、複数の四角形状の構面が形成されるようになる。   As the horizontal member, angle steel is used. Between the four main column members, the horizontal member is arranged in the horizontal direction with a predetermined interval in the axial direction of the main column member. It is connected to the column of books. Then, by connecting the main pillar material and the horizontal material, a plurality of quadrangular surfaces are formed when the steel tower is viewed from the plane, the left and right side surfaces, the front surface, and the rear surface.

斜材は、第1斜材と、第2斜材とを備えている。第1斜材は、四角形状の構面において、上側に位置する水平材の中央部と左右に位置する主柱材の中央部とに斜めに架設される。また、第1斜材は、下側に位置する水平材の中央部と左右に位置する主柱材の中央部とに斜めに架設される。第2斜材は、主柱材および水平材の4箇所の連結部と、4本の第1斜材の中央部とに斜めに架設される。すなわち、4本の主柱材の間の4面において、水平材、第1斜材および第2斜材によりトラス構造が形成されている。そして、第1斜材に、多くの力を分担させて、水平材には、小さな力しか働かないようにしている。なお、水平材の中央部と一対の第1斜材との連結部を構面の交点という。   The diagonal material includes a first diagonal material and a second diagonal material. The first diagonal member is installed obliquely between the central part of the horizontal member located on the upper side and the central part of the main pillar member located on the left and right in the quadrangular construction surface. The first diagonal member is obliquely installed between the central portion of the horizontal member located on the lower side and the central portion of the main pillar member located on the left and right. The second diagonal member is obliquely installed at the four connecting portions of the main column member and the horizontal member and the central portion of the four first diagonal members. That is, a truss structure is formed by the horizontal material, the first diagonal material, and the second diagonal material on the four surfaces between the four main pillar materials. Then, the first diagonal member is assigned a large amount of force so that only a small force is applied to the horizontal member. In addition, the connection part of the center part of a horizontal material and a pair of 1st diagonal material is called the intersection of a surface.

そして、このように構成される既設鉄塔においては、近年、台風が頻繁に襲来することから、耐風補強が実施されるようになっている。例えば、既設鉄塔の主柱材を補強するようにした鉄塔の骨組構造が公知になっている(特許文献1参照)。   And in the existing steel tower comprised in this way, since a typhoon frequently attacks in recent years, wind-proof reinforcement is implemented. For example, a framework structure of a steel tower in which a main pillar material of an existing steel tower is reinforced is known (see Patent Document 1).

該鉄塔の骨組構造は、軸方向に複数連結された主柱材のうち、一の主柱材の両端部のフランジ間を、一対の支持部材によって支持するようにしている。該支持部材は、一対の山型鋼と、連結部材とを備えている。一対の山型鋼は、略T字形状に配置されている。具体的には、互いの一片が異なる方向に延出されるように、同一方向に延出される他片同士が所定の間隔をおいて配置されている。   The frame structure of the steel tower supports a pair of supporting members between the flanges at both ends of one main column member among the main column members connected in the axial direction. The support member includes a pair of angle steels and a connecting member. The pair of angle steels are arranged in a substantially T shape. Specifically, the other pieces extending in the same direction are arranged at a predetermined interval so that the respective one pieces extend in different directions.

そして、略T字形状に配置された一対の山型鋼は、主柱材の中心を挟んで対称な位置において、主柱材の両端部のフランジ間に、主柱材の軸方向に沿って配置されている。連結部材は、一の主柱材の両端部にそれぞれ配置され、該主柱材のフランジを締結するボルトと、略T字形状に配置された一対の山型鋼の他片端部とを軸方向に連結できる構成になっている。   The pair of angle steels arranged in a substantially T shape is arranged along the axial direction of the main column material between the flanges at both ends of the main column material at symmetrical positions across the center of the main column material. Has been. The connecting members are respectively arranged at both ends of one main pillar, and a bolt for fastening the flange of the main pillar and the other end of the pair of angle steels arranged in a substantially T shape in the axial direction. It can be connected.

そして、一対の支持部材によって、一の主柱材の両端部のフランジ間が支持されるので、主柱材およびフランジの圧縮または引張強度が増加する。また、一対の支持部材によって、主柱材の両端部のフランジ、および、該フランジを締結するボルトの付近に重心が保持されるので、フランジおよびボルトに対して曲げモーメントが発生しなくなる。すなわち、既設鉄塔の主柱材が補強される。   And between the flanges of the both ends of one main pillar material is supported by a pair of support members, the compression or tensile strength of a main pillar material and a flange increases. In addition, since the center of gravity is held near the flanges at both ends of the main column member and the bolts that fasten the flanges by the pair of support members, no bending moment is generated with respect to the flanges and the bolts. That is, the main pillar material of the existing steel tower is reinforced.

特開2005−282339号公報JP 2005-282339 A

しかしながら、前記特許文献1の鉄塔の骨組構造の場合、主柱材の強度対策はなされているものの、鉄塔の前後左右の構面に配置される斜材に対する強度対策は何ら施されていない。   However, in the case of the steel frame structure of Patent Document 1, the strength of the main pillar material is taken, but no strength measures are taken against the diagonal members arranged on the front, rear, left and right construction surfaces of the steel tower.

そこで、本発明は、鉄塔の構面に配置される斜材に対する強度を十分に確保できる鉄塔の骨組構造を提供することを課題とする。   Then, this invention makes it a subject to provide the frame structure of the steel tower which can fully ensure the intensity | strength with respect to the diagonal material arrange | positioned on the construction surface of a steel tower.

本発明に係る鉄塔の骨組構造は、主柱材間に配置される第1の斜材と、該第1の斜材に交差するように、主柱材間に配置される第2の斜材とを備えた鉄塔の骨組構造において、前記第1の斜材は、表裏に並列配置される第1の表側斜材部材および第1の裏側斜材部材で構成され、前記第2の斜材は、表裏に並列配置される第2の表側斜材部材および第2の裏側斜材部材で構成され、前記第1の斜材および第2の斜材が交差する交差部位において、前記第1の表側斜材部材および第2の表側斜材部材のいずれか一方が、二分割されて同一直線上に直列配置され、残りの他方が、直列配置される前記いずれか一方の表側斜材部材の対向する端部間を貫通配置され、さらに、前記残りの他方の裏側斜材部材が直列配置されるとともに、前記いずれか一方の裏側斜材部材が貫通配置されるように構成されることを特徴とする。   The framework structure of the steel tower according to the present invention includes a first diagonal member disposed between main column members and a second diagonal member disposed between main column members so as to intersect the first diagonal member. The first diagonal member is composed of a first front diagonal member and a first back diagonal member arranged in parallel on the front and back sides, and the second diagonal member is The first front side at the intersection where the first diagonal member and the second diagonal member intersect each other, the second front diagonal member and the second rear diagonal member arranged in parallel on the front and back sides. One of the diagonal member and the second front diagonal member is divided into two and arranged in series on the same straight line, and the other is opposed to any one of the front diagonal members arranged in series. The other back side diagonal member is disposed in series between the end portions, and any one of the above Square of the back diagonal member member is characterized in that it is adapted to be through-placed.

かかる構成によれば、二分割されて直列配置される斜材部材によって、該直列配置される斜材部材にかかる大きな荷重を安定して分散できる。また、直列配置される斜材部材の端部間を貫通配置される斜材部材によって、該貫通配置される斜材部材にかかる荷重を十分に受けることができる。また、直列配置された斜材部材と、貫通配置された斜材部材とが表裏に配置されるので、十分な強度を確保できる。さらに、直列配置された表裏の斜材部材と、貫通配置された表裏の斜材部材とが交差するように配置されるので、鉄塔における振動および鉛直方向の荷重に対する強度を確保することができる。   According to such a configuration, a large load applied to the diagonal member arranged in series can be stably dispersed by the diagonal member arranged in series by being divided into two. In addition, the diagonal member disposed through the end portions of the diagonal member arranged in series can sufficiently receive the load applied to the diagonal member disposed through. Moreover, since the diagonal member arranged in series and the diagonal member arranged through are arranged on the front and back, sufficient strength can be secured. Furthermore, since the front and back diagonal members arranged in series and the front and back diagonal members arranged in a crossing manner are arranged to cross each other, it is possible to ensure strength against vibration and vertical load in the steel tower.

また、第1および第2の斜材に、山型鋼材が使用されており、断面がL字形状で開放断面となるため、内部腐食がない。また、第1および第2の斜材の設備点検が外観主体で行えて、設備状況を把握しやすい。また、第1および第2の斜材の加工に高度な溶接技術を必要としない(単純加工となり、不良品が少なくなる。)。また、第1および第2の斜材に、山型鋼材を使用しているので、鉄塔重量は大きくなるが、資材単価を低減できる。PL鉄塔に比べて部材数および受風面積が減少して、鉄塔重量および基礎荷重が小さくなり、請負代を低減できる。   Further, angle steel is used for the first and second diagonal members, and since the cross section is an L shape and an open cross section, there is no internal corrosion. In addition, the equipment inspection of the first and second diagonal materials can be performed mainly by the appearance, and it is easy to grasp the equipment status. Further, high-level welding technology is not required for processing the first and second diagonal materials (simple processing is performed and defective products are reduced). Moreover, since the angle steel materials are used for the first and second diagonal members, the weight of the steel tower increases, but the material unit price can be reduced. Compared to the PL steel tower, the number of members and the wind receiving area are reduced, the steel tower weight and the basic load are reduced, and the contract cost can be reduced.

また、本発明によれば、前記いずれか一方の表側斜材部材および裏側斜材部材と、前記残り他方の表側斜材部材および裏側斜材部材とが、山型鋼材により構成され、互いの一片が異なる方向に延出されるように、同一方向に延出される他片同士が接合されるような構成を採用することもできる。   Further, according to the present invention, any one of the front diagonal member and the back diagonal member and the remaining front diagonal member and the back diagonal member are made of chevron steel material, and one piece of each other. It is also possible to adopt a configuration in which the other pieces extending in the same direction are joined so that they extend in different directions.

かかる構成によれば、前記いずれか一方の表側斜材部材および裏側斜材部材と、前記残り他方の表側斜材部材および裏側斜材部材とが、山型鋼材の互いの一片が異なる方向に延出されるように、同一方向に延出される山型鋼材の他片同士が接合される。すなわち、前記いずれか一方の表側斜材部材および裏側斜材部材と、前記残り他方の表側斜材部材および裏側斜材部材とがT字形状に接合されるので、異なる方向に延出される互いの一片と、同一方向に接合される他片とで、斜材の強度が向上する。また、前記いずれか一方の表側斜材部材および裏側斜材部材と、前記残り他方の表側斜材部材および裏側斜材部材とがT字形状に接合されることで、雨水の滞留による部材腐食を防止することができ、非開放断面の鋼管よりも腐食耐性が高くなる。   According to this configuration, one of the front side diagonal member and the back side diagonal member and the other front side diagonal member and the back side diagonal member extend in directions in which the respective pieces of the angle steel are different from each other. As shown, the other pieces of the angle steel that extend in the same direction are joined together. That is, since any one of the front side diagonal member and the back side diagonal member and the remaining other front side diagonal member and the back side diagonal member are joined in a T-shape, each other extending in different directions. The strength of the diagonal material is improved by one piece and the other piece joined in the same direction. In addition, any one of the front diagonal member and the back diagonal member and the remaining front diagonal member and the back diagonal member are joined in a T shape so that member corrosion due to rainwater retention is prevented. It can be prevented and has higher corrosion resistance than a steel pipe having a non-open cross section.

また、本発明によれば、前記第1の斜材および第2の斜材が交差する交差部位に連結板が配置され、該連結板に、直列配置される前記いずれか一方の表側斜材部材と、貫通配置される前記残りの他方の表側斜材部材と、貫通配置される一方の裏側斜材部材と、直列配置される他方の裏側斜材部材とが連結されるように構成するようにしてもよい。   Further, according to the present invention, a connecting plate is disposed at an intersecting portion where the first diagonal member and the second diagonal member intersect, and any one of the front diagonal members arranged in series on the connecting plate. And the other front diagonal member disposed through, the one back diagonal member disposed through, and the other back diagonal member arranged in series are connected to each other. May be.

かかる構成によれば、直列配置された表裏の斜材部材と、貫通配置された表裏の他の斜材部材とが、連結板の表裏で接続されるので、鉄塔に係る振動や荷重が連結板の片面に偏ることがなく、連結板の両面でバランスよく受けることができる。また、連結板における斜材部材の接続が、連結板の表裏でなされるので、斜材部材を連結板の表面または裏面のいずれか一方に接続する場合に比して、多くの締結部材を使用して接続する必要がなく、連結板を小さくできる。そして、連結板を小さくできることから、その分風圧にも耐えられるようになる。   According to such a configuration, the front and back diagonal members arranged in series and the other diagonal members arranged front and back are connected on the front and back of the connecting plate, so that vibrations and loads related to the steel tower are connected to the connecting plate. Can be received with good balance on both sides of the connecting plate. In addition, since the diagonal members in the connecting plate are connected on the front and back of the connecting plate, more fastening members are used than when connecting the diagonal member to either the front or back side of the connecting plate. Thus, it is not necessary to connect them, and the connecting plate can be made small. And since a connection board can be made small, it comes to be able to endure wind pressure by that much.

また、本発明によれば、前記第1の斜材および第2の斜材によって、主柱材間に形成される前後左右の全構面において、前記第1の表側斜材部材が直列配置されるとともに、前記第2の表側斜材部材が貫通配置され、前記第2の裏側斜材部材が直列配置されるとともに、前記第1の裏側斜材部材が貫通配置されるように構成するようにしてもよい。   Further, according to the present invention, the first front diagonal member is arranged in series on the front, rear, left and right entire surfaces formed between the main pillar members by the first diagonal member and the second diagonal member. In addition, the second front diagonal member is disposed through, the second back diagonal member is arranged in series, and the first back diagonal member is arranged through. May be.

かかる構成によれば、前後左右の全構面の骨組構造を同じにすることで、全構面の強度が均一化されて、荷重や振動をバランスよく受けることができる。   According to such a configuration, by making the frame structures of all the front, rear, left, and right structural surfaces the same, the strength of all the structural surfaces is made uniform, and the load and vibration can be received in a balanced manner.

また、本発明によれば、前記第1の斜材および第2の斜材によって、主柱材間に形成される前後の両構面において、前記第1の表側斜材部材が直列配置されるとともに、前記第2の表側斜材部材が貫通配置され、前記第2の裏側斜材部材が直列配置されるとともに、前記第1の裏側斜材部材が貫通配置されるように構成される一方、前記第1の斜材および第2の斜材によって、主柱材間に形成される左右の両構面において、前記第2の表側斜材部材が直列配置されるとともに、前記第1の表側斜材部材が貫通配置され、前記第2の裏側斜材部材が貫通配置されるとともに、前記第1の裏側斜材部材が直列配置されるように構成してもよい。   According to the present invention, the first front diagonal member is arranged in series on both the front and rear structural surfaces formed between the main column members by the first diagonal member and the second diagonal member. In addition, the second front diagonal member is disposed through, the second back diagonal member is arranged in series, and the first back diagonal member is configured to pass through, The first front diagonal member and the second front diagonal member are arranged in series on the left and right structural surfaces formed between the main column members by the first diagonal member and the second diagonal member. A material member may be arranged to penetrate, the second back side diagonal member may be arranged to penetrate, and the first back side diagonal member may be arranged in series.

本発明によれば、二分割された第1の表側斜材部材を同一直線上に直列配置し、直列配置した第1の表側斜材部材の対向する端部間に、第2の表側斜材部材を貫通配置する一方、第2の裏側斜材部材を同一直線上に直列配置し、直列配置した第2の裏側斜材部材の対向する端部間に、第1の裏側斜材部材を貫通配置するようにしたので、鉄塔における振動および鉛直方向の荷重に対して十分な強度を確保することができる。   According to the present invention, the first front diagonal member divided into two is arranged in series on the same straight line, and the second front diagonal member is arranged between the opposing ends of the first front diagonal member arranged in series. The second back side diagonal member is arranged in series on the same straight line, and the first back side diagonal member is penetrated between the opposing ends of the second back side diagonal member arranged in series. Since it arrange | positions, sufficient intensity | strength can be ensured with respect to the vibration in a steel tower, and the load of a perpendicular direction.

本発明の一実施形態に係る鉄塔の骨組構造を示す概略斜視図。The schematic perspective view which shows the framework structure of the steel tower which concerns on one Embodiment of this invention. 図1の主柱材間の構面を示す正面図。The front view which shows the composition between the main pillar materials of FIG. (a)は、図2の交差部位を示す斜視図、(b)は、主柱材と、水平材および補強材との接続部位を示す斜視図、(c)は、図3(b)のB−B矢視断面図。(A) is a perspective view showing the intersection part of FIG. 2, (b) is a perspective view showing a connection part of the main pillar material, the horizontal member and the reinforcing material, and (c) is a perspective view of FIG. 3 (b). BB arrow sectional drawing. 図3(a)の分解斜視図。FIG. 3 is an exploded perspective view of FIG. 図3(a)のA―A矢視断面図。FIG. 3 is a cross-sectional view taken along line AA in FIG. 表側斜材部材および裏側斜材部材をT字形状に接合した状態を示す断面図。Sectional drawing which shows the state which joined the front side diagonal member and the back side diagonal member in T shape. 図1に示す鉄塔の骨組構造の変形例を示す概略図であり、左右の構面の骨組み構造を示す概略図。It is the schematic which shows the modification of the framework structure of the steel tower shown in FIG. 1, and is the schematic which shows the framework structure of a left-right construction surface.

本発明に係る鉄塔の骨組構造の実施形態について図1〜図6を参照しながら説明する。なお、図1は、鉄塔の一部の骨組構造を概略的に示し、便宜上、隣接する構面の骨組みのみを図示している。図2は、一構面における骨組構造の一部を拡大して図示しており、この骨組構造が前後左右の全構面に共通して形成されているものとする。   An embodiment of a steel frame structure according to the present invention will be described with reference to FIGS. FIG. 1 schematically shows a part of the frame structure of the steel tower, and for convenience, only the frame of the adjacent construction surface is illustrated. FIG. 2 is an enlarged view of a part of the frame structure in one plane, and it is assumed that this frame structure is formed in common on all the front, rear, left and right planes.

本実施形態に係る鉄塔1の骨組構造は、図1および図2に示すように、基礎面2と、主柱材3,…と、第1の斜材4と、第2の斜材5と、水平材6と、補強材7と、構面8a〜8dとを備えている。   As shown in FIGS. 1 and 2, the framework structure of the steel tower 1 according to the present embodiment includes a foundation surface 2, main pillar members 3,..., A first diagonal member 4, and a second diagonal member 5. The horizontal member 6, the reinforcing member 7, and the construction surfaces 8 a to 8 d are provided.

基礎面2は、図1に示すように、鉄塔1が設置される地面に平面視四角形状に形成されている。   As shown in FIG. 1, the base surface 2 is formed in a square shape in plan view on the ground on which the steel tower 1 is installed.

主柱材3は、図1に示すように、鋼管材が使用され、基礎面2の四隅に4本立設されている。具体的には、基礎面2に埋設された基礎体(図示せず)によって支持されている。   As shown in FIG. 1, the main pillar material 3 is made of steel pipe material and is erected at four corners of the base surface 2. Specifically, it is supported by a foundation body (not shown) embedded in the foundation surface 2.

第1の斜材4は、図3(a)、図4および図5に示すように、表裏に並列配置される第1の表側斜材部材40および第1の裏側斜材部材41とで構成されている。第1の表側斜材部材40および第1の裏側斜材部材41は、図6に示すように、山型鋼材により構成され、T字形状に接合されている。具体的には、互いの一片40a,41aが異なる方向に延出されるように、同一方向に延出される他片同士40b,41bが接合されて、ボルトBおよびナットNにより締結されている。そうすることで、互いが異なる方向に延出される一片40a,41aと、接合された同一方向に延出される他片40b,41bとにより、長さ方向に対する強度を補強できるようになる。また、一対の山型鋼材が表裏に接合されることで、鉄塔1に対する振動や荷重を安定した状態で受けることができる。また、第1の表側斜材部材40および第1の裏側斜材部材41がT字形状に接合されることで、雨水の滞留による部材腐食を防止することができ、非開放断面の鋼管よりも腐食耐性が高くなる。   As shown in FIG. 3A, FIG. 4 and FIG. 5, the first diagonal member 4 includes a first front diagonal member 40 and a first back diagonal member 41 arranged in parallel on the front and back sides. Has been. As shown in FIG. 6, the first front diagonal member 40 and the first back diagonal member 41 are made of angle steel and joined in a T-shape. Specifically, the other pieces 40b and 41b extending in the same direction are joined together and fastened by bolts B and nuts N so that the respective pieces 40a and 41a extend in different directions. By doing so, the strength in the length direction can be reinforced by the one piece 40a, 41a extending in a different direction and the other piece 40b, 41b extending in the same direction joined. Moreover, the vibration and load with respect to the steel tower 1 can be received in the stable state by joining a pair of angle steel materials to the front and back. Moreover, the first front-side diagonal member 40 and the first back-side diagonal member 41 are joined in a T-shape, so that member corrosion due to stagnation of rainwater can be prevented, compared to a steel pipe having a non-open cross section. High corrosion resistance.

また、第1の斜材4は、図2に示すように、主柱材3の高さ方向に所定の間隔をおいて、主柱材3,3間に配置されている。また、第1の表側斜材部材40,40は、図3(a)、図4および図5に示すように、第2の斜材5と交差する交差部位Xにおいて、二分割されて同一直線上に直列配置されている。第1の裏側斜材部材41は、図3(a)、図4および図5に示すように、二分割されて対向する第1の表側斜材部材40,40の端部間に貫通配置されている。   Further, as shown in FIG. 2, the first diagonal member 4 is disposed between the main column members 3 and 3 at a predetermined interval in the height direction of the main column member 3. Further, as shown in FIGS. 3A, 4 and 5, the first front diagonal member 40, 40 is divided into two parts at the intersection X where it intersects the second diagonal member 5. They are arranged in series on the line. As shown in FIGS. 3A, 4, and 5, the first back-side diagonal member 41 is divided into two and is disposed between the ends of the first front-side diagonal members 40, 40 facing each other. ing.

第2の斜材5は、図3(a)、図4および図5に示すように、表裏に並列配置される第2の表側斜材部材50および第2の裏側斜材部材51とで構成されている。また、第2の表側斜材部材50および第2の裏側斜材部材51は、前記第1の斜材4と同様に、山型鋼材により構成され、T字形状に接合されている。また、第2の表側斜材部材50は、図3(a)、図4および図5に示すように、第1の表側斜材部材40に交差するように、主柱材3,3間に配置されている。また、第2の表側斜材部材50は、二分割されて対向する第2の裏側斜材部材51,51の端部間に貫通配置されている。第2の裏側斜材部材51,51は、図3(a)、図4および図5に示すように、第1の斜材4と交差する交差部位Xにおいて、二分割されて同一直線上に直列配置されている。この場合も、前記と同様に、T字形状に接合することで、第2の表側斜材部材および第2の裏側斜材部材において、雨水の滞留による部材腐食を防止することができる。   As shown in FIGS. 3A, 4 and 5, the second diagonal member 5 is composed of a second front diagonal member 50 and a second rear diagonal member 51 arranged in parallel on the front and back sides. Has been. Similarly to the first diagonal member 4, the second front diagonal member 50 and the second back diagonal member 51 are made of angle steel and joined in a T-shape. Further, as shown in FIGS. 3A, 4, and 5, the second front diagonal member 50 is disposed between the main column members 3 and 3 so as to intersect the first front diagonal member 40. Has been placed. Further, the second front diagonal member 50 is divided into two parts and is disposed between the end portions of the second rear diagonal members 51, 51 facing each other. As shown in FIGS. 3A, 4, and 5, the second back side diagonal members 51, 51 are divided into two at the intersection X intersecting with the first diagonal 4 and are on the same straight line. They are arranged in series. In this case as well, the member corrosion due to the retention of rainwater can be prevented in the second front side diagonal member and the second back side diagonal member by joining in a T shape as described above.

水平材6は、図3(a)〜(c)、図4および図5に示すように、表裏に並列配置される表側水平材部材60および裏側水平材部材61で構成されている。表側水平材部材60および裏側水平材部材61は、一端部が、第1の斜材4と第2の斜材5の間の主柱材3に配置され、他端部が、第1の斜材4および第2の斜材5が交差する交差部位Xにおいて、第1の斜材4と第2の斜材5とで形成される、連結板10の左右両側のスペースに配置されている。また、水平材6(表側水平材部材60および裏側水平材部材61)は、前記第1の斜材4と同様に、山型鋼材により構成され、T字形状に接合されている。また、水平材6(表側水平材部材60および裏側水平材部材61)は、第1の斜材4および第2の斜材5が交差する交差部位Xにおいて、二分割されて同一直線上に直列配置されている。すなわち、水平材6(表側水平材部材60および裏側水平材部材61)は、両側の主柱材3,3から第1の斜材4および第2の斜材5の交差部位Xに水平方向に架設されている(図2参照)。   As shown in FIGS. 3A to 3C, 4, and 5, the horizontal member 6 includes a front-side horizontal member 60 and a back-side horizontal member 61 that are arranged in parallel on the front and back sides. One end of the front horizontal member 60 and the back horizontal member 61 is disposed on the main pillar member 3 between the first diagonal member 4 and the second diagonal member 5, and the other end thereof is the first diagonal member. At the intersection X where the material 4 and the second diagonal material 5 intersect, the first diagonal material 4 and the second diagonal material 5 are arranged in the left and right spaces of the connecting plate 10. Similarly to the first diagonal member 4, the horizontal member 6 (the front horizontal member 60 and the back horizontal member 61) is made of angle steel and joined in a T-shape. Further, the horizontal member 6 (the front side horizontal member 60 and the back side horizontal member 61) is divided into two at the intersecting portion X where the first diagonal member 4 and the second diagonal member 5 intersect and are arranged on the same straight line. Has been placed. That is, the horizontal member 6 (the front side horizontal member 60 and the back side horizontal member 61) extends in the horizontal direction from the main column members 3 and 3 on both sides to the intersection X of the first diagonal member 4 and the second diagonal member 5. It is erected (see FIG. 2).

補強材7は、山型鋼材により構成されている。また、補強材7は、図2および図3(b)に示すように、柱材3と水平材6との接続部位Yから、第1の斜材4の中央部および第2の斜材5の中央部にそれぞれ架設されている。   The reinforcing material 7 is made of angle steel. Further, as shown in FIGS. 2 and 3B, the reinforcing member 7 has a central portion of the first diagonal member 4 and a second diagonal member 5 from the connection portion Y between the column member 3 and the horizontal member 6. It is built in the center of each.

構面8a〜8dは、図1に示すように、第1の斜材4、第2の斜材5、水平材6、補強材7によって、主柱材3,3の間(鉄塔1の前後左右の側面)に形成されている。そして、全構面8a〜8dにおいて、第1の斜材4、第2の斜材5、水平材6および補強材7が、三角形を基本単位とするトラス構造になるように骨組みされている。   As shown in FIG. 1, the structural surfaces 8 a to 8 d are formed between the main column members 3 and 3 (before and after the tower 1 by the first diagonal member 4, the second diagonal member 5, the horizontal member 6, and the reinforcing member 7. Left and right side). In all the structural surfaces 8a to 8d, the first diagonal member 4, the second diagonal member 5, the horizontal member 6 and the reinforcing member 7 are framed so as to form a truss structure having a triangle as a basic unit.

そして、図3(a)、図4および図5に示すように、第1の斜材4および第2の斜材5が交差する交差部位Xには、多角形状(6角形状)の連結板10が配置されている。該連結板10は、その表裏に、直列配置される第1の表側斜材部材40,40と、貫通配置される第1の裏側斜材部材41と、貫通配置される第2の表側斜材部材50と、直列配置される第2の裏側斜材部材51,51とが連結される。   Then, as shown in FIGS. 3 (a), 4 and 5, a connecting plate having a polygonal shape (hexagonal shape) is provided at the intersection X where the first diagonal member 4 and the second diagonal member 5 intersect. 10 is arranged. The connecting plate 10 has first front diagonal members 40, 40 arranged in series, a first rear diagonal member 41 penetrating, and a second front diagonal member penetratingly arranged on the front and back. The member 50 and the 2nd back side diagonal member 51,51 arrange | positioned in series are connected.

なお、図4に示すように、第1の斜材4、第2の斜材5、水平材6には、軸線方向に沿って等間隔にボルトBの挿通孔Hが形成されている。また、連結板10には、第1の斜材4、第2の斜材5、水平材6を締結固定するためのボルトBの挿通孔Hが形成されている。   As shown in FIG. 4, the first diagonal member 4, the second diagonal member 5, and the horizontal member 6 are formed with insertion holes H for bolts B at equal intervals along the axial direction. Further, the connecting plate 10 is formed with an insertion hole H for a bolt B for fastening and fixing the first diagonal member 4, the second diagonal member 5, and the horizontal member 6.

この骨組構造は、主柱材3,3間に形成される前後左右の全構面8a〜8dにおいて共通して構成されている。したがって、前後左右の全構面8a〜8dにおいて、強度が均一化されて、振動や荷重をバランスよく受けることができる。そして、連結板10の表裏に、第1の斜材4および第2の斜材5が連結されるので、第1の斜材4および第2の斜材5の接続部の長さを大きくとる必要がなく、その分連結板10を小さくすることができ、風圧にも耐えることができる。   This frame structure is configured in common on all front and rear structural surfaces 8a to 8d formed between the main column members 3 and 3. Therefore, the strength is made uniform on all the front, rear, left and right structural surfaces 8a to 8d, and vibrations and loads can be received in a balanced manner. And since the 1st diagonal member 4 and the 2nd diagonal member 5 are connected with the front and back of the connection board 10, the length of the connection part of the 1st diagonal member 4 and the 2nd diagonal member 5 is taken large. There is no need, and the connecting plate 10 can be made smaller by that amount and can withstand wind pressure.

また、水平材6と、補強材7との接続部位Yには、略矩形状の接続板11が配置されている。該接続板11は、水平材6および補強材7が接続されている(図2および図3(b)参照)。   In addition, a connection plate 11 having a substantially rectangular shape is disposed at a connection portion Y between the horizontal member 6 and the reinforcing member 7. The connecting plate 11 is connected to the horizontal member 6 and the reinforcing member 7 (see FIGS. 2 and 3B).

このように、前記実施形態によれば、二分割されて同一直線上に直列配置された斜材部材40,51の強度低下した分を、直列配置される斜材部材40,51の対向する端部間を貫通配置された斜材部材41,50によって補強することができる。さらに、表裏の第1の斜材部材40,41と、表裏の第2の斜材部材50,51とが交差するように配置されるので、鉄塔1における振動および鉛直方向の荷重に対して補強することができる。   As described above, according to the above-described embodiment, the strength of the diagonal members 40 and 51 that are divided in two and arranged in series on the same straight line is reduced by the opposite ends of the diagonal members 40 and 51 arranged in series. Reinforcement can be reinforced by the diagonal members 41 and 50 penetrating between the sections. Furthermore, since the first diagonal members 40, 41 on the front and back sides and the second diagonal members 50, 51 on the front and back sides are arranged so as to intersect with each other, it is reinforced against vibrations in the tower 1 and loads in the vertical direction. can do.

また、第1および第2の斜材4,5に、山型鋼材が使用されているので、開放断面となるため、内部腐食がない。また、第1および第2の斜材4,5の設備点検が外観主体で行えて、設備状況を把握しやすい。また、第1および第2斜材4,5の加工に高度な溶接技術を必要としない(単純加工となり、不良品が少なくなる。)。また、第1および第2の斜材4,5に、山型鋼材を使用しているので、鉄塔重量は大きくなるが、資材単価を低減できる。PL鉄塔に比べて部材数および受風面積が減少して、鉄塔重量および基礎荷重が小さくなり、請負代を低減できる。   Moreover, since the angle steel material is used for the 1st and 2nd diagonal materials 4 and 5, since it becomes an open cross section, there is no internal corrosion. In addition, the equipment inspection of the first and second diagonal members 4 and 5 can be performed mainly by the appearance, and the equipment status can be easily grasped. Further, high-level welding technology is not required for processing the first and second diagonal members 4 and 5 (simple processing is performed and defective products are reduced). Moreover, since the angle steel material is used for the 1st and 2nd diagonal materials 4 and 5, although a steel tower weight becomes large, a material unit price can be reduced. Compared to the PL steel tower, the number of members and the wind receiving area are reduced, the steel tower weight and the basic load are reduced, and the contract cost can be reduced.

なお、本発明は、前記実施形態に限定されるものではなく、種々変更することができる。   In addition, this invention is not limited to the said embodiment, A various change can be made.

例えば、前記実施形態の場合、前後左右の全構面8a〜8dにおいて、第1の表側斜材部材40,40が直列配置されるとともに、第1の裏側斜材部材41が貫通配置されるようにする。一方、第2の表側斜材部材50が貫通配置されるとともに、第2の裏側斜材部材51,51が直列配置されるようにした。しかし、図2に示すように、前後の構面8a,8cにおいて、第1の表側斜材部材40,40が直列配置されるとともに、第1の裏側斜材部材41が貫通配置されるようにし、第2の表側斜材部材50が貫通配置されるとともに、第2の裏側斜材部材51,51が直列配置されるようにする。そして、図7に示すように、左右の構面8b,8dにおいて、第1の表側斜材部材40が貫通配置されるとともに、第1の裏側斜材部材41,41が直列配置されるようにする。一方、第2の表側斜材部材50,50が直列配置されるとともに、第2の裏側斜材部材51が貫通配置されるようにしてもよい。   For example, in the case of the above-described embodiment, the first front diagonal member 40, 40 is arranged in series and the first back diagonal member 41 is penetrated in all the front, rear, left, and right structural surfaces 8a to 8d. To. On the other hand, the second front diagonal member 50 is disposed through, and the second back diagonal members 51, 51 are arranged in series. However, as shown in FIG. 2, on the front and rear construction surfaces 8a and 8c, the first front diagonal member 40, 40 is arranged in series, and the first back diagonal member 41 is arranged to penetrate therethrough. The second front diagonal member 50 is disposed through the second diagonal member 51 and 51 in series. Then, as shown in FIG. 7, the first front diagonal member 40 and the first back diagonal member 41, 41 are arranged in series on the left and right construction surfaces 8 b, 8 d. To do. On the other hand, the second front diagonal member 50, 50 may be arranged in series, and the second back diagonal member 51 may be disposed through.

1…鉄塔、3…主柱材、4…第1の斜材、5…第2の斜材、8a〜8d…構面、10…連結板、40…第1の表側斜材部材、41…第1の裏側斜材部材、50…第2の表側斜材部材、51…第2の裏側斜材部材、S…スペース、X…交差部位   DESCRIPTION OF SYMBOLS 1 ... Steel tower, 3 ... Main pillar material, 4 ... 1st diagonal material, 5 ... 2nd diagonal material, 8a-8d ... Construction surface, 10 ... Connection board, 40 ... 1st front side diagonal material member, 41 ... 1st back side diagonal member, 50 ... 2nd front side diagonal member, 51 ... 2nd back side diagonal member, S ... space, X ... crossing part

Claims (5)

  1. 主柱材間に配置される第1の斜材と、
    該第1の斜材に交差するように、主柱材間に配置される第2の斜材とを備えた鉄塔の骨組構造において、
    前記第1の斜材は、表裏に並列配置される第1の表側斜材部材および第1の裏側斜材部材で構成され、
    前記第2の斜材は、表裏に並列配置される第2の表側斜材部材および第2の裏側斜材部材で構成され、
    前記第1の斜材および第2の斜材が交差する交差部位において、
    前記第1の表側斜材部材および第2の表側斜材部材のいずれか一方が、二分割されて同一直線上に直列配置され、残りの他方が、直列配置される前記いずれか一方の表側斜材部材の対向する端部間を貫通配置され、
    さらに、前記残りの他方の裏側斜材部材が直列配置されるとともに、前記いずれか一方の裏側斜材部材が貫通配置されるように構成されることを特徴とする鉄塔の骨組構造。
    A first diagonal disposed between the main pillars;
    In a framework structure of a steel tower provided with a second diagonal member arranged between main pillar members so as to intersect the first diagonal member,
    The first diagonal member includes a first front diagonal member and a first back diagonal member arranged in parallel on the front and back sides,
    The second diagonal member is composed of a second front diagonal member and a second back diagonal member arranged in parallel on the front and back sides,
    In the intersection where the first diagonal and the second diagonal intersect,
    Either one of the first front diagonal member and the second front diagonal member is divided into two and arranged in series on the same straight line, and the other of the first front diagonal member is arranged in series. Between the opposing ends of the material member is arranged penetrating,
    Furthermore, the frame structure of the steel tower is characterized in that the other back-side diagonal member is arranged in series and the one back-side diagonal member is arranged to penetrate therethrough.
  2. 前記いずれか一方の表側斜材部材および裏側斜材部材と、前記残り他方の表側斜材部材および裏側斜材部材とは、山型鋼材により構成され、互いの一片が異なる方向に延出されるように、同一方向に延出される他片同士が接合されることを特徴とする請求項1に記載の鉄塔の骨組構造。   The one front diagonal member and the back diagonal member and the remaining front diagonal member and the back diagonal member are made of chevron steel, and one piece extends in a different direction. The steel frame structure according to claim 1, wherein the other pieces extending in the same direction are joined to each other.
  3. 前記第1の斜材および第2の斜材が交差する交差部位に連結板が配置され、
    該連結板に、
    直列配置される前記いずれか一方の表側斜材部材と、
    貫通配置される前記残りの他方の表側斜材部材と、
    貫通配置される一方の裏側斜材部材と、
    直列配置される他方の裏側斜材部材とが連結されるように構成されることを特徴とする請求項1に記載の鉄塔の骨組構造。
    A connecting plate is disposed at an intersection where the first diagonal member and the second diagonal member intersect;
    To the connecting plate,
    Any one of the front diagonal members arranged in series;
    The other other front diagonal member arranged through,
    One backside diagonal member disposed through,
    The frame structure of a steel tower according to claim 1, wherein the other back-side diagonal member arranged in series is connected.
  4. 前記第1の斜材および第2の斜材によって、主柱材間に形成される前後左右の全構面において、
    前記第1の表側斜材部材が直列配置されるとともに、前記第2の表側斜材部材が貫通配置され、
    前記第2の裏側斜材部材が直列配置されるとともに、前記第1の裏側斜材部材が貫通配置されるように構成されることを特徴とする請求項1乃至3のいずれか1項に記載の鉄塔の骨組構造。
    In all the front and back, left and right structural surfaces formed between the main column members by the first diagonal member and the second diagonal member,
    The first front diagonal member is disposed in series, and the second front diagonal member is disposed through,
    4. The structure according to claim 1, wherein the second back side diagonal member is arranged in series and the first back side diagonal member is arranged to pass therethrough. 5. Steel tower frame structure.
  5. 前記第1の斜材および第2の斜材によって、主柱材間に形成される前後の両構面において、
    前記第1の表側斜材部材が直列配置されるとともに、前記第2の表側斜材部材が貫通配置され、
    前記第2の裏側斜材部材が直列配置されるとともに、前記第1の裏側斜材部材が貫通配置されるように構成される一方、
    前記第1の斜材および第2の斜材によって、主柱材間に形成される左右の両構面において、
    前記第2の表側斜材部材が直列配置されるとともに、前記第1の表側斜材部材が貫通配置され、
    前記第2の裏側斜材部材が貫通配置されるとともに、前記第1の裏側斜材部材が直列配置されるように構成されることを特徴とする請求項1乃至3のいずれか1項に記載の鉄塔の骨組構造。
    In both front and back surfaces formed between the main column members by the first diagonal member and the second diagonal member,
    The first front diagonal member is disposed in series, and the second front diagonal member is disposed through,
    While the second back side diagonal member is arranged in series and the first back side diagonal member is configured to pass through,
    In the left and right structural surfaces formed between the main column members by the first diagonal member and the second diagonal member,
    The second front diagonal member is disposed in series, and the first front diagonal member is disposed through,
    4. The apparatus according to claim 1, wherein the second back side diagonal member is disposed to penetrate the first back side diagonal member, and the first back side diagonal member is arranged in series. 5. Steel tower frame structure.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485572A (en) * 2013-09-27 2014-01-01 国家电网公司 Method for cable type reinforcement of convertor station direct-current filter suspension steel framework and steel framework

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JPS62236943A (en) * 1986-04-07 1987-10-17 Mitsui Constr Reinforcement structure of brace material of truss
JPH035863U (en) * 1989-06-06 1991-01-21
JP2004132112A (en) * 2002-10-15 2004-04-30 Tokyo Electric Power Co Inc:The Lowermost structure of steel tower
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62236943A (en) * 1986-04-07 1987-10-17 Mitsui Constr Reinforcement structure of brace material of truss
JPH035863U (en) * 1989-06-06 1991-01-21
JP2004132112A (en) * 2002-10-15 2004-04-30 Tokyo Electric Power Co Inc:The Lowermost structure of steel tower
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485572A (en) * 2013-09-27 2014-01-01 国家电网公司 Method for cable type reinforcement of convertor station direct-current filter suspension steel framework and steel framework

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