JP2013064230A - Reinforcement device of steel pipe tower - Google Patents

Reinforcement device of steel pipe tower Download PDF

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JP2013064230A
JP2013064230A JP2011201807A JP2011201807A JP2013064230A JP 2013064230 A JP2013064230 A JP 2013064230A JP 2011201807 A JP2011201807 A JP 2011201807A JP 2011201807 A JP2011201807 A JP 2011201807A JP 2013064230 A JP2013064230 A JP 2013064230A
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flange
reinforcing
steel pipe
reinforcement
main
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JP5833388B2 (en
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Yasuhiro Komichi
泰弘 小路
Yasumasa Kishimoto
泰昌 岸本
Nobuo Takeuchi
信雄 竹内
Kei Uchikawa
啓 内川
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Kansai Electric Power Co Inc:The
関西電力株式会社
Sakai Iron Works Co Ltd
株式会社酒井鉄工所
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Abstract

PROBLEM TO BE SOLVED: To improve workability while securing high reinforcement strength to loads of both compression and tension when reinforcing a steel pipe tower such as a steel power for power transmission.SOLUTION: A pair of end support members 51 and 52 to be attached to a flange part 12 comprises first and second reinforcement flanges 61 and 62, a connection piece 63 for connecting them, a connection piece 64 provided on the second reinforcement flange 62 for connecting a reinforcement material 53, a leg 65 provided on the first reinforcement flange 61 and erected at a position avoiding a bolt nut or the like on the flange part 12, and a long axial bolt 66. Thus, bolts for fastening the flange parts 12 can be replaced and re-fastened one by one, strength decline is minimized, and the need of temporary reinforcement during construction is eliminated. Also, the compression load can be propagated from the leg 65 to the flange part 12a on the inner side, the tension load can be propagated from the long axial bolt 66 to the flange part 12b on the outer side, and both loads can be coped with.

Description

本発明は、送電用鉄塔や通信用鉄塔等の鋼管鉄塔を補強するための装置に関する。   The present invention relates to an apparatus for reinforcing 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、建造後に当該鉄塔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、補強が必要となることがある。特に、送電用鉄塔の建て替え工事の際の送電線の移設時や、送電線の張り替え時には、左右のアームの荷重に大きな差が生じることがある。ここで、鉄塔の主柱材としては、山形鋼を用いるものと、鋼管を用いるものとに大別され、前者は比較的低電圧で小型の鉄塔で多く用いられ、後者は比較的高電圧で大型の鉄塔で多く用いられる。その内、本発明は、後者の鋼管鉄塔を対象とする。   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 may require reinforcement when an unexpected load is expected to be applied to the steel tower members after construction, or when strength reduction due to aging is expected. In particular, when the transmission line is relocated during the rebuilding work of the transmission tower or when the transmission line is replaced, there may be a large difference in the load on the left and right arms. Here, the main pillar material of the steel tower is broadly divided into those using angle steel and those using steel pipes. The former is often used for small steel towers with relatively low voltage, and the latter is relatively high voltage. It is often used on large steel towers. Among them, the present invention is directed to the latter steel pipe tower.

図6は、本発明の一適用例である送電用の鋼管鉄塔1の模式的構造を示す正面図である。図6(a)は全体を示し、図6(b)は一部を拡大して示す。この図に示す鋼管鉄塔1は、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の間に設けられる補強用の腹材3と、主柱材2の上部付近で水平方向に延設され、送電線や架空地線を支持するアーム4とを含む。この図に示す鋼管鉄塔1では、前記腹材3としては、斜め方向に延びる斜材のみを示しているが、水平方向に延びる水平材が設けられることもある。   FIG. 6 is a front view showing a schematic structure of a steel pipe tower 1 for power transmission that is an application example of the present invention. FIG. 6A shows the whole, and FIG. 6B shows an enlarged part. The steel pipe tower 1 shown in this figure includes a main column member 2 extending in the height direction from the four corners of a square base surface, a reinforcing belly member 3 provided between adjacent main column members 2, and a main column member 2 And an arm 4 that extends horizontally in the vicinity of the upper portion of the frame and supports a power transmission line and an overhead ground line. In the steel pipe tower 1 shown in this figure, only the diagonal material extending in the oblique direction is shown as the abdomen 3, but a horizontal material extending in the horizontal direction may be provided.

主柱材2は、図6(b)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7に示すように、鋼管本体部11と、その長手方向の両端部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、図略のボルトナットで締結されることによって、主柱材2が構築されている。なお、各主柱材鋼管10内には、圧縮荷重に対する強度向上を図るために、コンクリートが充填されていることがある。   As shown in FIG. 6B, the main pillar material 2 is configured by connecting a plurality of main pillar steel pipes 10 to each other in the longitudinal direction. As shown in FIG. 7, these main columnar steel pipes 10 have a steel pipe main body 11 and flanges 12 provided integrally at both ends in the longitudinal direction, and the main columns arranged in the vertical direction. The main pillar material 2 is constructed by fastening the flange portions 12 of the steel pipe 10 with bolts and nuts (not shown). Each main column steel pipe 10 may be filled with concrete in order to improve strength against compressive load.

図7は、主柱材鋼管10のフランジ部12付近を示す図である。図7(a)および図7(b)は、前記フランジ部12として、鍛造フランジが用いられる場合の側面図および軸直角断面図をそれぞれ示し、図7(c)および図7(d)は、比較的小径の主柱材鋼管に用いられ、前記フランジ部12として、リブ付きフランジが用いられる場合の側面図および軸直角断面図をそれぞれ示す。隣接の主柱材鋼管10同士の接合のため、負荷が掛かるフランジ部12において、鍛造フランジは、該フランジ部12自体の強度がアップされ、鋼管本体部11にフランジ部12が溶接されているだけであるのに対して、リブ付きフランジでは、フランジ部12の強度を補うために、鋼管本体部11の外周面とフランジ部12との間に、略三角形のリブ13がさらに溶接されている。   FIG. 7 is a view showing the vicinity of the flange portion 12 of the main columnar steel pipe 10. 7 (a) and 7 (b) show a side view and a cross-sectional view perpendicular to the axis when a forged flange is used as the flange portion 12, respectively, and FIG. 7 (c) and FIG. 7 (d) A side view and a cross-sectional view perpendicular to the axis when a ribbed flange is used as the flange portion 12 are shown for a main pillar steel pipe having a relatively small diameter. In the flange portion 12 to which a load is applied for joining the adjacent main column steel pipes 10, the forged flange has the strength of the flange portion 12 itself increased, and the flange portion 12 is simply welded to the steel pipe main body portion 11. On the other hand, in the flange with a rib, a substantially triangular rib 13 is further welded between the outer peripheral surface of the steel pipe body 11 and the flange 12 in order to supplement the strength of the flange 12.

また、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。なお、腹材3にも、鋼管本体部の両端にフランジ部が設けられた構造のものもあるが、本発明は、主柱材2を構成する主柱材鋼管10を対象とする。   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 of welding or the like, and the end portion of the abdomen 3 is fixed to the gusset plate. Has been. In addition, although there exists a thing of the structure where the flange part was provided in the both ends of the steel pipe main-body part also in the belly material 3, this invention makes the main pillar material steel pipe 10 which comprises the main pillar material 2 object.

このように構成される鋼管鉄塔1において、たとえば工事中に送電線を1条移設する場合、部材位置によっては、送電線による荷重のアンバランスのため、圧縮または引張荷重が増減することがある。そこで、そのような圧縮荷重および引張荷重に対応するために、図6(b)で示すような補強装置20が設けられることになる。ここで、前記補強装置20として、鋼管本体部11と平行に、実質的に該鋼管本体部11の径を大きくしたのと同様な効果を得ることができる装置を用いた場合は、圧縮荷重に対する強度は向上することができる。しかしながら、引張荷重に対する強度を向上するためには、フランジ部12に取り付いて、該フランジ部12間を接続する構造が必要となる。   In the steel pipe tower 1 configured as described above, for example, when one line of a transmission line is moved during construction, the compression or tensile load may increase or decrease depending on the position of the member due to unbalance of the load due to the transmission line. Therefore, in order to cope with such a compressive load and a tensile load, a reinforcing device 20 as shown in FIG. 6B is provided. Here, as the reinforcing device 20, in the case where a device that can obtain the same effect as that obtained by substantially increasing the diameter of the steel pipe main body 11 in parallel with the steel pipe main body 11 is used, The strength can be improved. However, in order to improve the strength against the tensile load, a structure that attaches to the flange portion 12 and connects the flange portions 12 is required.

そのような構造の従来技術は、特許文献1や特許文献2で提案されている。図8は、特許文献1の補強装置30の構造を示す図である。図8(a)および図8(b)は側面図であり、図8(c)は図8(a)の切断面線A−Aから見た断面図であり、図8(d)は図8(a)の切断面線B−Bから見た断面図である。この補強装置30は、一対の端部支持部材31,32と、それらの間を連結する補強材33とを備えて構成される。   Conventional techniques having such a structure are proposed in Patent Document 1 and Patent Document 2. FIG. 8 is a view showing the structure of the reinforcing device 30 of Patent Document 1. As shown in FIG. 8 (a) and 8 (b) are side views, FIG. 8 (c) is a cross-sectional view taken along section line AA of FIG. 8 (a), and FIG. 8 (d) is a diagram. It is sectional drawing seen from the cut surface line BB of 8 (a). The reinforcing device 30 includes a pair of end support members 31 and 32 and a reinforcing member 33 that connects between them.

図8(a)は圧縮荷重に対応する場合であり、この場合は、補強すべき主柱材鋼管10aの両端に設けられる一対のフランジ部12aに対して、端部支持部材31,32は、内側、すなわち補強すべき主柱材鋼管10aのフランジ部12aに設けられる。これに対して、引張荷重に対応する場合には、前記端部支持部材31,32は、図8(b)で示すように外側、すなわち補強すべき主柱材鋼管10aの隣の主柱材鋼管10bのフランジ部12bに設けられる。   FIG. 8A shows a case corresponding to a compressive load. In this case, the end support members 31 and 32 have a pair of flange portions 12a provided at both ends of the main columnar steel pipe 10a to be reinforced. It is provided inside, that is, the flange portion 12a of the main columnar steel pipe 10a to be reinforced. On the other hand, when it corresponds to a tensile load, the end support members 31 and 32 are outside, as shown in FIG. 8B, that is, the main column material adjacent to the main column steel tube 10a to be reinforced. It is provided on the flange portion 12b of the steel pipe 10b.

図8(c)および図8(d)で示すように、端部支持部材31,32は、前記鋼管本体部11を周方向から取り囲み、着脱のために前記周方向に2つの部材31a,31b;32a,32bに分割形成され、その中央には鋼管本体部11に対応した半円弧状の凹部31c,32cが形成され、その凹部31c,32cを囲む仮想円31d,32d上には、周方向に等間隔にボルト穴(図8の例では全周で14個)が形成されている。   As shown in FIG. 8C and FIG. 8D, the end support members 31 and 32 surround the steel pipe body 11 from the circumferential direction, and two members 31a and 31b in the circumferential direction for attachment and detachment. A semicircular arc-shaped recess 31c, 32c corresponding to the steel pipe main body 11 is formed at the center, and on the virtual circles 31d, 32d surrounding the recess 31c, 32c in the circumferential direction; Bolt holes (14 in the entire circumference in the example of FIG. 8) are formed at equal intervals.

また、図9は、特許文献2の補強装置40の構造を示す図である。図9(a)は斜視図であり、図9(b)は側面図であり、図9(c)は図9(b)の切断面線C−Cから見た断面図であり、図9(d)は端部支持部材41a,41bの底面図である。この補強装置40は、一対の端部支持部材41,42と、それらの間を連結する補強材43とを備えて構成される。   FIG. 9 is a diagram showing the structure of the reinforcing device 40 of Patent Document 2. 9A is a perspective view, FIG. 9B is a side view, and FIG. 9C is a cross-sectional view taken along the section line CC in FIG. 9B. (D) is a bottom view of the end support members 41a and 41b. The reinforcing device 40 includes a pair of end support members 41 and 42 and a reinforcing member 43 that connects between them.

図9は圧縮荷重に対応する場合であり、図8の補強装置30と同様に、この場合は、補強すべき主柱材鋼管10aの両端に設けられる一対のフランジ部12aに対して、端部支持部材41,42は、内側、すなわち補強すべき主柱材鋼管10aのフランジ部12aに設けられる。これに対して、図示していないが、引張荷重に対応する場合には、前記端部支持部材41,42は、外側、すなわち補強すべき主柱材鋼管10aの隣の主柱材鋼管10bのフランジ部12bに設けられる。   FIG. 9 shows a case corresponding to a compressive load. In this case, as with the reinforcing device 30 of FIG. 8, in this case, the end portions of the pair of flange portions 12a provided at both ends of the main columnar steel pipe 10a to be reinforced The support members 41 and 42 are provided on the inner side, that is, the flange portion 12a of the main columnar steel pipe 10a to be reinforced. On the other hand, although not shown, in the case of dealing with a tensile load, the end support members 41 and 42 are outside, that is, the main columnar steel pipe 10b adjacent to the main columnar steel pipe 10a to be reinforced. Provided in the flange portion 12b.

端部支持部材41,42は、前記鋼管本体部11の周方向の対向位置に取付けられる2つの部材41a,41b;42a,42bから構成される。図9(d)で示すように、部材41a,41bの円弧の長さは短く、図9(c)では、周方向に前記14個設けられるボルト45の3個分の長さである。そして、図9(d)で示すように、それら2つの部材41a,41bの中央には、鋼管本体部11に対応した半円弧状の凹部41cが形成されており、その凹部41cを囲む仮想円41d(図9(c))上で、該部材41a,41bの周方向の両端部付近には、ボルト穴41eが形成されている。また、2つのボルト穴41e間には、逃げ穴41hが形成されており、フランジ部12の接合に用いられるボルト45の頭部またはナットが嵌り込む。   The end support members 41 and 42 are composed of two members 41a and 41b; 42a and 42b that are attached to opposing positions in the circumferential direction of the steel pipe body 11. As shown in FIG. 9 (d), the lengths of the arcs of the members 41a and 41b are short, and in FIG. 9 (c), they are the lengths of three of the fourteen bolts 45 provided in the circumferential direction. Then, as shown in FIG. 9 (d), a semicircular arc-shaped recess 41c corresponding to the steel pipe body 11 is formed in the center of the two members 41a and 41b, and a virtual circle surrounding the recess 41c. Bolt holes 41e are formed in the vicinity of both end portions in the circumferential direction of the members 41a and 41b on 41d (FIG. 9C). Further, a clearance hole 41h is formed between the two bolt holes 41e, and the head or nut of the bolt 45 used for joining the flange portion 12 is fitted therein.

特開2005−248487号公報JP 2005-248487 A 特開2005−282339号公報JP 2005-282339 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に、施工性が良いものであることが望ましい。しかしながら、特許文献1の従来技術では、鋼管本体部11の全周を囲む端部支持部材31,32は、半割れの2つの部材31a,31b;32a,32bに分割形成されており、そのためフランジ部12への取付けには、フランジ部12a,12b同士を固定しているボルト35の半分、すなわち部材31aと31bおよび32aと32bの一方に関するボルトの総て(図8の例では7個)を、同時に取り外す必要がある。その後、これらの部材31aと31bおよび32aと32bの一方を前記フランジ部12aまたは12bに重ねた上で、新しい長軸のボルトとナットで、部材31a,31b;32a,32bとフランジ部12a,12bとを共締めする。同様のことを、部材31aと31bおよび32aと32bの他方についても行い、フランジ部12aまたは12bに、部材31a,31b;32a,32bを固定する。   Reinforcing work such as power transmission towers is desirable because it has good workability because the surrounding environment is poor, such as in the mountains, and there are many operations at high places. However, in the prior art of Patent Document 1, the end support members 31 and 32 surrounding the entire circumference of the steel pipe body 11 are divided into two half-cracked members 31a and 31b; 32a and 32b. For attachment to the portion 12, half of the bolts 35 fixing the flange portions 12a and 12b, that is, all of the bolts related to one of the members 31a and 31b and 32a and 32b (seven in the example of FIG. 8). Need to be removed at the same time. After that, one of these members 31a and 31b and 32a and 32b is overlapped with the flange portion 12a or 12b, and then the members 31a and 31b; 32a and 32b and the flange portions 12a and 12b with new long-axis bolts and nuts. Tighten together. The same thing is performed also about the other of member 31a, 31b and 32a, 32b, and member 31a, 31b; 32a, 32b is fixed to the flange part 12a or 12b.

したがって、ボルト35の半分を同時に緩めるので、事前に、補強対象の鋼管本体部11aの上下端のフランジ部12aに掛かる荷重を移しておくために、仮支持材で仮補強を行う必要がある。すなわち、補強のための補強を行う必要があるという問題がある。このため、コストおよび工期が嵩む。この点、特許文献2では、同時に外すボルト45を、2本にまで削減することができるが、それでも強度が不足する可能性がある。   Therefore, since half of the bolts 35 are loosened at the same time, it is necessary to perform temporary reinforcement with a temporary support material in order to transfer the load applied to the upper and lower flange portions 12a of the steel pipe body 11a to be reinforced in advance. That is, there is a problem that it is necessary to perform reinforcement for reinforcement. For this reason, cost and a construction period increase. In this regard, in Patent Document 2, the number of bolts 45 to be removed at the same time can be reduced to two, but the strength may still be insufficient.

また、特許文献1において、引張荷重に対応するために、端部支持部材31,32は、補強すべき主柱材鋼管10aの隣の主柱材鋼管10bのフランジ部12bに設けられることもあるので、該端部支持部材31,32は、組み上げた状態の平面視で、楕円状、或いは小判状に形成され、長径部分に補強材33のための取付け片31f,32fが設けられ、補強材33は鋼管本体部11から離間して、フランジ部12bの外方を大きく迂回する。したがって、圧縮荷重および引張荷重の伝播経路としては、側面視でコの字状となり、補強材33が負担する荷重の伝達性が悪いという問題もある。すなわち、主柱材鋼管10aの伸縮開始直後には補強材33に荷重が掛かからず、また部材31a,31b;32a,32b内でモーメントが掛かるので、該部材31a,31b;32a,32bには高い強度が必要になる。   Moreover, in patent document 1, in order to respond | correspond to a tensile load, the edge part supporting members 31 and 32 may be provided in the flange part 12b of the main columnar steel pipe 10b adjacent to the main columnar steel pipe 10a which should be reinforced. Therefore, the end support members 31 and 32 are formed in an elliptical shape or an oval shape in plan view in the assembled state, and attachment pieces 31f and 32f for the reinforcing material 33 are provided in the long diameter portion, and the reinforcing material 33 separates from the steel pipe main-body part 11, and largely detours the outer side of the flange part 12b. Therefore, the propagation path of the compressive load and the tensile load is U-shaped in a side view, and there is a problem that the transferability of the load borne by the reinforcing member 33 is poor. That is, immediately after the expansion and contraction of the main column steel pipe 10a, no load is applied to the reinforcing member 33, and a moment is applied within the members 31a, 31b; 32a, 32b. Therefore, the members 31a, 31b; High strength is required.

特許文献2でも同様に、補強材43は、部材41a,41b;42a,42bの半径方向外方に飛び出した連結片41gに連結される。したがって、一方のフランジ部から他方のフランジ部の間で、荷重の伝播経路はクランク状に向きを変え、荷重の伝達性が悪い。さらに特許文献2では、その端部支持部材41,42と、特許文献1の端部支持部材31,32とを比べて、フランジ部12a,12bに固定するボルト45の本数を削減した分、荷重の伝播経路の強度が低く、上記の問題は顕著である。   Similarly, in Patent Document 2, the reinforcing member 43 is connected to the connecting piece 41g that protrudes outward in the radial direction of the members 41a and 41b; 42a and 42b. Accordingly, the load propagation path is changed in a crank shape between one flange portion and the other flange portion, and the load transferability is poor. Further, in Patent Document 2, the end support members 41 and 42 and the end support members 31 and 32 of Patent Document 1 are compared, and the load is reduced by the number of bolts 45 fixed to the flange portions 12a and 12b. The strength of the propagation path is low, and the above problem is remarkable.

本発明の目的は、コストおよび工期を削減することができるとともに、荷重に対する応答性を向上することができる鋼管鉄塔の補強装置を提供することである。   The objective of this invention is providing the reinforcement apparatus of the steel pipe tower which can improve the responsiveness with respect to a load while being able to reduce cost and a construction period.

本発明の鋼管鉄塔の補強装置は、鋼管本体部の両端にフランジ部が一体形成されて成る主柱材鋼管が、前記フランジ部でボルトおよびナットによってその長手方向に互いに連結されることで主柱材が構成された鋼管鉄塔における前記主柱材の補強装置において、前記両端のフランジ部にそれぞれ搭載されて前記鋼管本体部を周方向から取り囲み、着脱のために前記周方向に複数に分割形成される一対の端部支持部材と、前記鋼管本体部に沿って延び、前記一対の端部支持部材間を連結する補強材と、を備え、前記各端部支持部材は、前記フランジ部と平行に配置されて、円弧状に前記周方向に複数に分割形成され、前記フランジ部における前記ボルトが挿通されるボルト穴に対応した位置にボルト穴を有するとともに、一方の面側に前記補強材が連結される第1補強フランジと、前記第1補強フランジの他方の面側において、前記フランジ部の少なくとも前記ボルトまたはナットの締結位置を回避して複数配置され、その部材先端縁が前記フランジ部に接触し、かつ前記ボルトまたはナットの取り外し用の空間を形成するための高さを有する脚部と、前記第1補強フランジ及び前記フランジ部のボルト穴に挿通され、前記ボルトに置き換えて使用される長軸ボルトと、を含むことを特徴とする。   According to the steel pipe tower reinforcing device of the present invention, a main column steel pipe formed by integrally forming flanges at both ends of a steel pipe main body is connected to each other in the longitudinal direction by bolts and nuts at the flange. In the reinforcing apparatus for the main column member in the steel pipe tower in which the material is configured, the steel pipe main body part is mounted on the flange parts at both ends to surround the steel pipe body part from the circumferential direction, and is divided into a plurality of parts in the circumferential direction for attachment / detachment. A pair of end support members extending along the steel pipe main body and connecting the pair of end support members, wherein each end support member is parallel to the flange portion. It is arranged and divided into a plurality of parts in the circumferential direction in an arc shape, and has a bolt hole at a position corresponding to the bolt hole through which the bolt is inserted in the flange portion, and the reinforcement on one surface side A plurality of first reinforcing flanges connected to each other, and on the other surface side of the first reinforcing flange, avoiding a fastening position of at least the bolts or nuts of the flange parts, and a front end edge of the member is the flange part And a leg portion having a height for forming a space for removing the bolt or nut, and a bolt hole in the first reinforcing flange and the flange portion, and used in place of the bolt. And a long-axis bolt.

上記の構成によれば、一対の端部支持部材と鋼管本体部の両端に形成されているフランジ部とが各々長軸ボルトによって固定され、さらに、一対の端部支持部材間が補強材で連結されることになる。また、鋼管本体部のフランジ部と第1補強フランジとの間には脚部が介在する。そして、鋼管本体部の長手方向における圧縮荷重については、前記フランジ部、脚部、第1補強フランジ及び補強材という経路で直線的に伝達される。また、引張荷重についても、前記フランジ部、長軸ボルト、第1補強フランジ及び補強材という経路で直線的に伝達される。従って、圧縮荷重及び引張荷重の双方に対応できるだけでなく、圧縮又は引張荷重が加わったときの荷重伝達性を良好とすることができる。   According to said structure, a pair of edge part support member and the flange part currently formed in the both ends of the steel pipe main-body part are each fixed by the long-axis bolt, Furthermore, between a pair of edge part support members is connected with a reinforcing material Will be. Further, a leg portion is interposed between the flange portion of the steel pipe main body portion and the first reinforcing flange. And about the compressive load in the longitudinal direction of a steel pipe main-body part, it transmits linearly by the path | route of the said flange part, a leg part, a 1st reinforcement flange, and a reinforcing material. Also, the tensile load is linearly transmitted through the path of the flange portion, the long-axis bolt, the first reinforcing flange, and the reinforcing material. Therefore, not only can both the compressive load and the tensile load be supported, but also the load transferability when the compressive or tensile load is applied can be improved.

さらに、圧縮荷重について、上記の構成によれば鋼管本体部の周囲に補強材が配置された補強構造体が構築されることから強度補強を行うことができる。しかも、上述の通り荷重の伝達経路が直線的であるため荷重伝達性が良好となり、圧縮荷重に対して効率良い補強を達成できる。   Furthermore, regarding the compressive load, according to the above configuration, the reinforcing structure in which the reinforcing material is disposed around the steel pipe main body portion is constructed, so that the strength can be strengthened. Moreover, since the load transmission path is linear as described above, the load transmission performance is improved, and efficient reinforcement can be achieved against the compression load.

なお、引張荷重に対しては、それまでフランジ部を連結していたボルトに代わって前記長軸ボルトが当該引張荷重を負担することになる。このため、例えば長軸ボルトとして強度が前記ボルトよりも高いもの(例えばボルト断面積が大きいもの)を選択することによって、引張荷重に対する強度を向上させることも可能となる。つまり、上記補強装置を用いることによって、引張荷重について強度向上を図る機会を提供することができる。   In addition, with respect to a tensile load, the said long-axis bolt bears the said tensile load instead of the bolt which has connected the flange part until then. For this reason, for example, by selecting a long-axis bolt having a higher strength than the bolt (for example, a bolt having a large cross-sectional area), the strength against a tensile load can be improved. That is, the use of the reinforcing device can provide an opportunity to improve the strength of the tensile load.

また、第1補強フランジは、前記フランジ部に直接取付けられるのではなく、前記脚部によって、前記フランジ部に対して前記長手方向に間隔を置いて取り付けられる。そして、前記脚部は、前記フランジ部の締結用のボルトおよびナットの締結位置を回避して立設されている。従って、フランジ部を連結していたボルトの取り外し、及び長軸ボルトの締結の一連の差し替え作業をスムースに行わせることができる。   Further, the first reinforcing flange is not directly attached to the flange portion, but is attached to the flange portion by the leg portion at an interval in the longitudinal direction. And the said leg part is standingly arranged avoiding the fastening position of the bolt and nut for fastening of the said flange part. Therefore, it is possible to smoothly perform a series of replacement work of removing the bolts connecting the flange portions and fastening the long shaft bolts.

特に、ボルトを1本ずつ長軸ボルトへ差し替えることが可能となるので、フランジ連結部分の強度低下を最小限に抑制することができる。このため、従来の補強装置では必要であった仮補強作業を不要にすることができる。   In particular, since it is possible to replace the bolts one by one with the long-axis bolts, it is possible to minimize a decrease in strength of the flange connection portion. For this reason, the temporary reinforcement operation | work which was required with the conventional reinforcement apparatus can be made unnecessary.

また、本発明の鋼管鉄塔の補強装置では、前記第1補強フランジの前記一方の面側に平行に配置される第2補強フランジと、前記第1および第2補強フランジ間を連結する連結片とをさらに備え、前記補強材は、前記第2補強フランジの第1補強フランジとは反対側に連結されることを特徴とする。   Further, in the steel pipe tower reinforcing device of the present invention, a second reinforcing flange disposed in parallel to the one surface side of the first reinforcing flange, and a connecting piece for connecting between the first and second reinforcing flanges, The reinforcing member is connected to the opposite side of the second reinforcing flange to the first reinforcing flange.

上記の構成によれば、長軸ボルトの挿通のためのボルト穴を設ける必要がある第1補強フランジではなく、この第1補強フランジに連結片を介して連結される第2補強フランジに補強材が取り付けられる。従って、ボルト穴(長軸ボルト)の配置位置に特段影響されることなく、補強材の数や取付け位置を任意に定めることができる。   According to said structure, it is not a 1st reinforcement flange which needs to provide the bolt hole for insertion of a long-axis bolt, A reinforcement material is connected to this 2nd reinforcement flange via a connection piece to this 1st reinforcement flange. Is attached. Therefore, the number of reinforcing members and the mounting position can be arbitrarily determined without being particularly affected by the position of the bolt hole (long shaft bolt).

さらにまた、本発明の鋼管鉄塔の補強装置では、前記各端部支持部材において、前記補強材が連結される連結片は、半径方向に延びる板状の部材から成り、その複数が周方向に等間隔に設けられ、前記補強材は、軸直角断面がL字状のアングル材から成り、各連結片には、2つの前記アングル材が、その背面を対向させて取付けられることを特徴とする。   Furthermore, in the steel pipe tower reinforcing device of the present invention, in each of the end support members, the connecting piece to which the reinforcing material is connected is composed of a plate-like member extending in the radial direction, and a plurality of the connecting pieces are arranged in the circumferential direction. The reinforcing member is formed of an angle member having an L-shaped cross section perpendicular to the axis, and the two reinforcing members are attached to each connecting piece with their back surfaces facing each other.

上記の構成によれば、前記補強材が連結される連結片を複数として、それらを端部支持部材の周方向に等間隔な位置に設けることで、前記圧縮の荷重を、バランス良く受けることができる。さらに、前記連結片を半径方向に延びた板状に形成し、前記補強材を、軸直角断面がL字状のアングル材とするとともに、それを2つ、背面を対向させて前記連結片に取付けることで、前記周方向における時計回りおよび反時計回りの両方の方向の荷重(鋼管本体部の捻り方向の荷重)に対して、等しい強度を得ることができる。   According to said structure, the said compression load can be received with sufficient balance by providing the connection piece with which the said reinforcing material is connected to two or more, and providing them in the circumferential direction of an edge part supporting member at equal intervals. it can. Further, the connecting piece is formed in a plate shape extending in the radial direction, and the reinforcing member is an angle member having an L-shaped cross section perpendicular to the axis, and two of them are opposed to the connecting piece with the back face facing each other. By attaching, equal strength can be obtained with respect to the load in both the clockwise direction and the counterclockwise direction in the circumferential direction (the load in the twisting direction of the steel pipe main body).

また、本発明の鋼管鉄塔の補強装置では、前記周方向に複数に分割形成され、前記鋼管本体部に取付けられ、相互に組合せられる固定部材(以下、バンドという)をさらに備え、前記バンドは、前記鋼管本体部の外周を囲むバンド筒部と、前記バンド筒部の外周面において、前記連結片に対応した位置から半径方向に延びて形成され、前記補強材を支持する支持片と、を含むことを特徴とする。   Moreover, in the steel pipe tower reinforcing device of the present invention, the steel pipe tower is further divided into a plurality of parts in the circumferential direction, attached to the steel pipe main body, and further provided with a fixing member (hereinafter referred to as a band), the band comprising: A band cylinder portion that surrounds the outer periphery of the steel pipe main body portion, and a support piece that extends in a radial direction from a position corresponding to the connecting piece on the outer peripheral surface of the band cylinder portion and supports the reinforcing material. It is characterized by that.

上記の構成によれば、前記鋼管本体部の長手(軸)方向の1または複数箇所に、上記の構成から成るバンドを設けて、前記補強材の鋼管本体部に対する長手(軸)方向および周方向のずれを抑える。したがって、前記補強材の、特に圧縮荷重に対する変形(屈曲)を阻止し、強度を向上することができる。   According to said structure, the band which consists of said structure is provided in one or several places of the longitudinal (axial) direction of the said steel pipe main-body part, and the longitudinal (axial) direction and circumferential direction with respect to the steel pipe main-body part of the said reinforcing material Reduce the deviation. Therefore, it is possible to prevent deformation (bending) of the reinforcing material, particularly against a compressive load, and improve the strength.

本発明の鋼管鉄塔の補強装置によれば、圧縮荷重及び引張荷重の双方に対応できる補強装置を提供できる。すなわち、圧縮荷重については、鋼管本体部のフランジ部から端部支持部材の脚部及び第1補強フランジを介して補強材に伝達できるので対応可能であり、しかも荷重の伝達経路が直線的であるため荷重伝達性が良好となり、圧縮荷重に対する補強を好適に達成できる。また、引張荷重については、鋼管本体部のフランジ部を連結していたボルトに代わる長軸ボルトによって従前通りに対応することができ、当該長軸ボルトとして強度に優れるものを選択することで引張荷重に対する補強を達成することも可能となる。   According to the steel pipe tower reinforcing device of the present invention, it is possible to provide a reinforcing device that can handle both compressive load and tensile load. That is, the compressive load can be handled because it can be transmitted from the flange portion of the steel pipe main body portion to the reinforcing material via the leg portion of the end support member and the first reinforcing flange, and the load transmission path is linear. Therefore, load transferability becomes good, and reinforcement against a compressive load can be suitably achieved. In addition, the tensile load can be dealt with as usual by using a long-axis bolt instead of the bolt connecting the flange portion of the steel pipe main body, and by selecting the long-axis bolt having excellent strength, the tensile load It is also possible to achieve reinforcement against the above.

さらに、鋼管本体部のフランジ部を連結しているボルトを1本ずつ外し、長軸ボルトに差し替えることができるので、当該補強装置の組み付け時における強度低下を最小限に抑制することができる。従って、従来は必要とされていた仮補強作業を省くことができ、工事コスト及び工期の短縮化に寄与することができる。   Furthermore, since the bolts connecting the flange portions of the steel pipe main body portion can be removed one by one and replaced with the long-axis bolts, it is possible to minimize a decrease in strength when the reinforcing device is assembled. Therefore, it is possible to omit the temporary reinforcement work that has been conventionally required, and to contribute to shortening the construction cost and the construction period.

本発明の実施の一形態に係る補強装置を鋼管鉄塔における主柱材の主柱材鋼管に取付けた状態を模式的に示す図である。It is a figure which shows typically the state which attached the reinforcement apparatus which concerns on one Embodiment of this invention to the main pillar material steel pipe of the main pillar material in a steel pipe tower. 前記補強装置を構成する端部支持部材の斜視図である。It is a perspective view of the edge part supporting member which comprises the said reinforcement apparatus. 図2で示す端部支持部材の六面図である。FIG. 3 is a six-side view of the end support member shown in FIG. 2. 前記補強装置を構成する補強材の一構成例を示す軸直角断面図である。It is an axis perpendicular sectional view showing an example of 1 composition of a reinforcing material which constitutes the reinforcement device. 前記補強装置を構成するバンド付近を拡大して示す側面図である。It is a side view which expands and shows the band vicinity which comprises the said reinforcement apparatus. 本発明の一適用例である送電用の鋼管鉄塔の模式的構造を示す正面図である。It is a front view which shows the typical structure of the steel pipe tower for power transmission which is one application example of this invention. 前記鋼管鉄塔を構成する主柱材鋼管のフランジ部付近を示す図である。It is a figure which shows the flange part vicinity of the main pillar material steel pipe which comprises the said steel pipe steel tower. 典型的な従来技術の鋼管鉄塔の補強装置の構造を示す図である。It is a figure which shows the structure of the reinforcement apparatus of the typical conventional steel pipe tower. 他の従来技術の鋼管鉄塔の補強装置の構造を示す図である。It is a figure which shows the structure of the reinforcement apparatus of the steel pipe tower of another prior art.

図1は、本発明の実施の一形態に係る補強装置50を、前述の鋼管鉄塔1における主柱材2の主柱材鋼管10に取付けた状態を模式的に示す図である。図1(a)と図1(b)とは、90°見る角度が異なっている。すなわち、たとえば図1(a)を正面図または背面図とすれば、図1(b)は右側面図または左側面図である。前記主柱材鋼管10は、鋼管本体部11の長手方向の両端部に、フランジ部12が一体に設けられて構成されている。この図1の例では、主柱材鋼管10のフランジ部12は、前記図7(c)および図7(d)で示すリブ13付きのフランジである。   FIG. 1 is a view schematically showing a state in which a reinforcing device 50 according to an embodiment of the present invention is attached to a main column steel pipe 10 of a main column member 2 in the steel pipe tower 1 described above. FIG. 1A and FIG. 1B are different from each other by an angle of 90 °. That is, for example, if FIG. 1A is a front view or a rear view, FIG. 1B is a right side view or a left side view. The main columnar steel pipe 10 is configured by integrally providing flange parts 12 at both ends in the longitudinal direction of the steel pipe main body part 11. In the example of FIG. 1, the flange portion 12 of the main columnar steel pipe 10 is a flange with ribs 13 shown in FIGS. 7 (c) and 7 (d).

そして、この補強装置50は、一対の端部支持部材51,52と、補強材53とを備えて構成される。前記端部支持部材51,52は、補強すべき主柱材鋼管10aのフランジ部12aにそれぞれ搭載されて、前記鋼管本体部11を周方向から取り囲み、着脱のために前記周方向に複数、本実施の形態では2つの部材51a,51b;52a,52bに分割形成される。   The reinforcing device 50 includes a pair of end support members 51 and 52 and a reinforcing material 53. The end support members 51 and 52 are respectively mounted on the flange portion 12a of the main columnar steel pipe 10a to be reinforced, surround the steel pipe main body portion 11 in the circumferential direction, and a plurality of the end support members 51 and 52 are arranged in the circumferential direction for attachment / detachment. In the embodiment, it is divided into two members 51a, 51b; 52a, 52b.

図2は、そのうちの1つの部材52aの斜視図であり、図3は六面図である。部材52aは、半円弧状に形成され、前記フランジ部12と平行に配置される第1補強フランジ61及び第2補強フランジ62と、これら第1及び第2補強フランジ61,62間を連結する複数の連結片63と、前記補強材53を連結するための連結片64と、前記フランジ部12上にその先端縁が当接する脚部65と、長軸ボルト66とを備えて構成される。第1及び第2補強フランジ61,62、連結片63、64及び脚部65は、いずれも所定の肉厚を有する金属の平板部材から形成されている。   FIG. 2 is a perspective view of one of the members 52a, and FIG. 3 is a six-face view. The member 52a is formed in a semicircular arc shape, and a plurality of first reinforcing flanges 61 and second reinforcing flanges 62 arranged in parallel with the flange portion 12 and a plurality of members for connecting the first and second reinforcing flanges 61 and 62 to each other. The connecting piece 63, the connecting piece 64 for connecting the reinforcing member 53, a leg portion 65 whose tip edge abuts on the flange portion 12, and a long-axis bolt 66. The first and second reinforcing flanges 61 and 62, the connecting pieces 63 and 64, and the leg portion 65 are all formed from a metal flat plate member having a predetermined thickness.

第1補強フランジ61は、半円弧状に形成され、前記フランジ部12における前記締結用のボルト35,45のボルト穴に対応した位置に、ボルト穴611を有するとともに、その中心に前記鋼管本体部11が収容される円弧状の凹部612を有する。また、この第1補強フランジ61のフランジ部12側の面には、前記脚部65が立設される。脚部65は、前記フランジ部12の締結用のボルト35,45およびナットの締結位置ならびにリブ13の位置を回避して、鋼管本体部11の外周面にその先端縁が密着するように複数立設される。さらに、前記脚部65は、ボルト35,45またはナットの取り外し用の空間を形成するための高さを有する。   The first reinforcing flange 61 is formed in a semicircular arc shape, and has a bolt hole 611 at a position corresponding to the bolt hole of the fastening bolts 35, 45 in the flange portion 12, and the steel pipe main body portion at the center thereof. 11 has an arcuate recess 612 in which 11 is accommodated. Further, the leg portion 65 is erected on the surface of the first reinforcing flange 61 on the flange portion 12 side. A plurality of leg portions 65 are provided so that the fastening edges of the bolts 35 and 45 and nuts for fastening the flange portion 12 and the positions of the ribs 13 are avoided, and the leading edges thereof are in close contact with the outer peripheral surface of the steel pipe main body portion 11. Established. Further, the leg portion 65 has a height for forming a space for removing the bolts 35 and 45 or the nut.

第2補強フランジ62も、半円弧状に形成され、その中心に前記鋼管本体部11が収容される円弧状の凹部622を有する。この第2補強フランジ62は、前記第1補強フランジ61よりも大径に形成されている。そのため、これらのダミーフランジ61,62間を連結する連結片63も、第1補強フランジ61側から第2補強フランジ62側になるにつれて、径方向の幅が幅広に形成される。   The second reinforcing flange 62 is also formed in a semicircular arc shape, and has an arcuate recess 622 in which the steel pipe main body 11 is accommodated. The second reinforcing flange 62 is formed to have a larger diameter than the first reinforcing flange 61. Therefore, the connecting piece 63 that connects the dummy flanges 61 and 62 is also formed with a wider radial width from the first reinforcing flange 61 side to the second reinforcing flange 62 side.

図2および図3の例では、連結片63は、円弧状の凹部612、622の円弧中心(鋼管本体部11の軸心)を中心軸とする周方向でみて60°毎に均等な間隔で、前記円弧中心から延びる半径線上に設けられている。この連結片63および上述の脚部65の凹部612、622側の端縁は、鋼管本体部11の外周面に沿うように直線状に形成されている。なお、連結片63および脚部65の前記端縁は、鋼管本体部11の外周面に密着させても良いし、或いは所定のギャップを置いて対向させてもよい。   In the example of FIGS. 2 and 3, the connecting pieces 63 are equally spaced every 60 ° when viewed in the circumferential direction with the center of the arc of the arc-shaped recesses 612 and 622 (the axis of the steel pipe body 11) as the central axis. , Provided on a radial line extending from the arc center. The edges of the connecting piece 63 and the recesses 612 and 622 of the leg 65 are formed linearly along the outer peripheral surface of the steel pipe main body 11. In addition, the said edge of the connection piece 63 and the leg part 65 may be closely_contact | adhered to the outer peripheral surface of the steel pipe main-body part 11, or may be made to oppose with a predetermined gap.

前記脚部65は、前記締結用のボルト35,45およびナットの締結位置ならびにリブ13の位置を回避するために不均一な間隔で設けられる可能性がある。一方、この連結片63も任意の位置に設けられてもよいが、図2および図3に示すように少なくとも一部の連結片63が、好ましくは全部の連結片63が、前記脚部65と同じ位置に設けられると、圧縮荷重を直線的にフランジ部12に伝達させることができるので好ましい。   The legs 65 may be provided at non-uniform intervals in order to avoid the fastening positions of the fastening bolts 35 and 45 and the nut and the positions of the ribs 13. On the other hand, the connecting piece 63 may also be provided at an arbitrary position. However, as shown in FIGS. 2 and 3, at least a part of the connecting pieces 63, preferably all the connecting pieces 63 are connected to the legs 65. If provided at the same position, it is preferable because the compressive load can be transmitted linearly to the flange portion 12.

前記第2補強フランジ62の連結片63が設けられる面とは反対側の面には、前記補強材53の連結片64が立設される。本実施の形態では、前記連結片64は、第2補強フランジ62の半径方向に延びる板状の部材から成り、4つが周方向に均等な間隔(90°毎)で立設される。したがって、前記圧縮の荷重を、バランス良く受けることができる。この連結片64に形成された取付け穴641に、前記補強材53の端部がボルト69によって固定される。前記補強材53は、アングル材、丸棒、角棒、円筒、角筒等の任意の形状に形成されればよく、前記連結片64は、そのような補強材53の形状に合わせて形成されればよい。残余の部材51a,51b;52bも、この部材52aと同様に形成される。   A connecting piece 64 of the reinforcing material 53 is erected on the surface of the second reinforcing flange 62 opposite to the surface on which the connecting piece 63 is provided. In the present embodiment, the connecting piece 64 is composed of a plate-like member extending in the radial direction of the second reinforcing flange 62, and four are erected at equal intervals (every 90 °) in the circumferential direction. Therefore, the compression load can be received with a good balance. The end of the reinforcing member 53 is fixed to the mounting hole 641 formed in the connecting piece 64 by a bolt 69. The reinforcing member 53 may be formed in an arbitrary shape such as an angle member, a round bar, a square bar, a cylinder, a rectangular tube, and the like, and the connecting piece 64 is formed in accordance with the shape of the reinforcing member 53. Just do it. The remaining members 51a, 51b; 52b are formed in the same manner as the member 52a.

図4は、前記補強材53の一構成例を示す軸直角断面図である。この図4の例では、前記各補強材53は、軸直角断面がL字状の2つのアングル材53a,53bから成り、前記半径方向に延びる板状の各連結片64には、前記2つのアングル材53a,53bが、その背面を対向させて取付けられている。したがって、対向する片53a1,53b1とは別の片53a2,53b2は、前記鋼管本体部11の接線方向に延び、したがって前記周方向における時計回りおよび反時計回りの両方の方向の荷重(鋼管本体部11の捻り方向の荷重)に対して、等しい強度を得ることができる。   FIG. 4 is a cross-sectional view perpendicular to the axis showing a structural example of the reinforcing member 53. In the example of FIG. 4, each reinforcing member 53 is composed of two angle members 53 a and 53 b having an L-shaped cross section perpendicular to the axis, and each of the plate-like connecting pieces 64 extending in the radial direction includes the two reinforcing members 53. Angle members 53a and 53b are attached with their rear surfaces facing each other. Accordingly, the pieces 53a2 and 53b2, which are different from the facing pieces 53a1 and 53b1, extend in the tangential direction of the steel pipe main body 11, and therefore load in both the clockwise and counterclockwise directions in the circumferential direction (steel pipe main body 11), an equal strength can be obtained.

さらにまた、前記補強材53は、前記鋼管本体部11の長手方向の複数箇所(図1では4箇所)において、バンド67(固定部材)によって鋼管本体部11に固定されている。バンド67は、前記周方向に分割形成された2つの部材67a,67bから構成されている。部材67a,67bは、半円筒状のバンド筒部67a1,67b1と、前記バンド筒部67a1,67b1の周方向の両端から直径線方向に延びて形成されるバンド連結部67a2,67b2と、前記バンド筒部67a1,67b1の外周面において、半径方向に延びて形成される補強材支持片67a3,67b3とを備えて構成される。   Furthermore, the reinforcing material 53 is fixed to the steel pipe body 11 by a band 67 (fixing member) at a plurality of positions (four places in FIG. 1) in the longitudinal direction of the steel pipe body 11. The band 67 includes two members 67a and 67b that are divided and formed in the circumferential direction. The members 67a and 67b include semi-cylindrical band tube portions 67a1 and 67b1, band connecting portions 67a2 and 67b2 formed extending in the diameter line direction from both circumferential ends of the band tube portions 67a1 and 67b1, and the band Reinforcing material support pieces 67a3 and 67b3 formed to extend in the radial direction are provided on the outer peripheral surfaces of the cylindrical portions 67a1 and 67b1.

前記バンド筒部67a1,67b1が鋼管本体部11の外周を囲むように相互に組み付けられ、バンド連結部67a2,67b2がボルト68によって相互に組合せられることで、このバンド67が鋼管本体部11に固定される。前記補強材支持片67a3,67b3は、前記端部支持部材51,52の連結片64に対応した位置から半径方向に延びて形成され、図5で示すように、前記アングル材53a,53bの取付け部分は幅広に形成される。なお、図5では、図面の簡略化のために、バンド連結部67a2,67b2を省略している。   The band cylinder portions 67a1 and 67b1 are assembled to each other so as to surround the outer periphery of the steel pipe main body portion 11, and the band connecting portions 67a2 and 67b2 are combined with each other by bolts 68, whereby the band 67 is fixed to the steel pipe main body portion 11. Is done. The reinforcing material support pieces 67a3 and 67b3 are formed to extend in a radial direction from positions corresponding to the connecting pieces 64 of the end support members 51 and 52, and as shown in FIG. 5, the angle members 53a and 53b are attached. The part is formed wide. In FIG. 5, the band connecting portions 67a2 and 67b2 are omitted for simplification of the drawing.

この補強材支持片67a3,67b3にアングル材53a,53bの片53a1,53b1が前記ボルト69によって固定されることで、前記補強材53(アングル材53a,53b)の鋼管本体部11に対する長手(軸)方向および周方向のずれを抑えることができる。また、前記バンド67を設けることで、補強材53の、特に圧縮荷重に対する変形(屈曲)を阻止する補強効果により、強度を向上することができる。このバンド67は、前記鋼管本体部11の長手(軸)方向の1または複数箇所に、必要に応じて設けることができる。   The pieces 53a1 and 53b1 of the angle members 53a and 53b are fixed to the reinforcing member support pieces 67a3 and 67b3 by the bolts 69, whereby the reinforcing member 53 (angle members 53a and 53b) is elongated (shaft) with respect to the steel pipe main body 11. ) And circumferential deviation can be suppressed. Further, by providing the band 67, the strength can be improved by the reinforcing effect of preventing the deformation of the reinforcing material 53, particularly against the compressive load (bending). The band 67 can be provided as needed at one or a plurality of locations in the longitudinal (axial) direction of the steel pipe body 11.

上述のように構成される補強装置50の主柱材鋼管10への取付けは、以下の通りである。図1において、先ず、上下のフランジ部12a,12bにおいて、2つに分割形成された部材51a,52aと51b,52bとの内、一方が取付けられる取付け範囲で、前記3つのボルト穴611の内で、中央のボルト穴に対応したボルト35,45が外され、長軸ボルト66に取り替えて締結され、該部材51a,52aと51b,52bとの一方が仮止めされる。その後、仮止めされた部材の左右のボルト穴に対応したボルト35,45が外され、長軸ボルト66に取り替えられて締結されることが1本ずつ行われ、前記部材51a,52aと51b,52bとの一方が本固定される。上方側のフランジ部と下方側のフランジ部とで、或る時点で、外されているボルト35,45は1本であるので、上方側の部材51aまたは51bと、下方側の部材52aまたは52bとの取付けが、同時に行われてもよい。こうして、部材51a,52aと51b,52bとの内、一方の取付けが完了すると、他方の取付けが同様にして行われる。   The attachment of the reinforcing device 50 configured as described above to the main columnar steel pipe 10 is as follows. In FIG. 1, first, in the upper and lower flange portions 12a and 12b, the inside of the three bolt holes 611 is within the attachment range in which one of the two members 51a and 52a and 51b and 52b is attached. Then, the bolts 35 and 45 corresponding to the central bolt hole are removed, replaced with the long-axis bolt 66 and fastened, and one of the members 51a, 52a and 51b, 52b is temporarily fixed. Thereafter, the bolts 35 and 45 corresponding to the left and right bolt holes of the temporarily fixed member are removed, replaced with the long-axis bolt 66 and fastened one by one, and the members 51a, 52a and 51b, One side of 52b is fixed permanently. Since there is only one bolt 35, 45 removed at a certain point in the upper flange portion and the lower flange portion, the upper member 51a or 51b and the lower member 52a or 52b are provided. May be performed at the same time. Thus, when the attachment of one of the members 51a, 52a and 51b, 52b is completed, the other attachment is performed in the same manner.

ここで、長軸ボルト66は引張荷重を負担する部材となる。従って、上記のボルトの取り替えの際、引張荷重に対する補強が必要な場合は、長軸ボルト66として、ボルト35,45よりも強度が高いもの、例えばボルト断面積が大きいもの、或いは高強度の材質のものが選択される。   Here, the long-axis bolt 66 is a member that bears a tensile load. Accordingly, when the above bolt replacement is required, if it is necessary to reinforce the tensile load, the long-axis bolt 66 has a higher strength than the bolts 35 and 45, for example, a bolt having a large cross-sectional area, or a high-strength material. Is selected.

なお、前記端部支持部材51,52は、鋼管本体部11の周囲に後付けで取付けられるために、前述のように周方向に2つの部材51a,51b;52a,52bに分割して形成されている。前記フランジ部12aに取付けられた後、2つに分割された部材51a,51b;52a,52bをそれぞれ互いに連結し、周方向に相互に締結されて、前記補強フランジ61,62を環状の形態としてもよい。また、端部支持部材51,52の分割数は、3つ以上であってもよく、或いは側部が蝶番などで連結されていて、鋼管本体部11の外周を挟み込むように構成されていてもよい。   In addition, since the said end part supporting members 51 and 52 are attached to the circumference | surroundings of the steel pipe main-body part 11 by retrofitting, it is divided | segmented into the two members 51a and 51b; 52a and 52b in the circumferential direction as mentioned above, and is formed. Yes. After being attached to the flange portion 12a, the two divided members 51a, 51b; 52a, 52b are connected to each other and fastened to each other in the circumferential direction to form the reinforcing flanges 61, 62 in an annular form. Also good. Moreover, the division | segmentation number of the edge part support members 51 and 52 may be three or more, or the side part is connected with the hinge etc., and it is comprised so that the outer periphery of the steel pipe main-body part 11 may be pinched | interposed. Good.

前記端部支持部材51,52の取付けが終了すると、必要な数のバンド67がボルト68で仮止めされて鋼管本体部11の外周に取付けられる。その後、アングル材53a,53bの両端部がボルト69によって端部支持部材51,52の連結片64に取付けられ、同時にバンド67の支持片67a3,67b3に、ボルト69によって固定される。その後、バンド67が前記鋼管本体部11の外周に、ボルト68によって本固定される。 このように本実施の形態の補強装置50では、鋼管鉄塔1における主柱材2の補強を行うにあたって、着脱のために複数に分割形成されてフランジ部12に取付けられる端部支持部材51,52が、従来はボルト穴611が形成された円弧状の板であったのを、本実施の形態では、その円弧状の板である第1補強フランジ61に複数の脚部65を取付け、長軸ボルト66を使用して、該第1補強フランジ61をフランジ部12と平行に、長手方向に間隔を開けて支持するようにする。そして、前記脚部65を、前記フランジ部12の締結用のボルト35,45およびナットの締結位置や、主柱材鋼管10がリブ付きフランジである場合にはそのリブ13を回避して、かつ前記ボルト35,45またはナットの取り外しのための空間を形成する高さに形成しておく。   When the attachment of the end support members 51 and 52 is completed, a necessary number of bands 67 are temporarily fixed with bolts 68 and attached to the outer periphery of the steel pipe body 11. Thereafter, both end portions of the angle members 53a and 53b are attached to the connecting pieces 64 of the end support members 51 and 52 by bolts 69, and simultaneously fixed to the support pieces 67a3 and 67b3 of the band 67 by the bolts 69. Thereafter, the band 67 is permanently fixed to the outer periphery of the steel pipe main body 11 with bolts 68. As described above, in the reinforcing device 50 according to the present embodiment, when the main pillar 2 is reinforced in the steel pipe tower 1, the end support members 51 and 52 that are divided into a plurality of parts for attachment and detachment and are attached to the flange portion 12 are attached. In the present embodiment, however, a plurality of leg portions 65 are attached to the first reinforcing flange 61 which is the arc-shaped plate, and the long axis is used. Bolts 66 are used to support the first reinforcing flange 61 parallel to the flange portion 12 and spaced in the longitudinal direction. And the said leg part 65 avoids the rib 13 when the bolts 35 and 45 for fastening of the said flange part 12, and the fastening position of a nut, and the main pillar material steel pipe 10 is a flange with a rib, and The bolts 35, 45 or nuts are formed at a height that forms a space for removal.

したがって、該第1補強フランジ61を内側のフランジ部12aに取付けても、圧縮荷重については前記脚部65を通して内側のフランジ部12aから直線的に補強材53へ伝達させることができる。一方、引張荷重については前記長軸ボルト66によって外側のフランジ部12bに伝達させることができる。従って、圧縮及び引張の両方の荷重に対応可能になる。また、前記フランジ部12a,12b間の締結用のボルト35,45を、1本ずつ差し替えし、前記長軸ボルト66に交換して再締結を行うことができる。これによって、該補強装置50の取付け時におけるフランジ締結部の強度低下を最小限に止め、従来のようにボルト35,45を複数本纏めて外す場合に必要となる仮の補強を不要にすることができる。こうして、安全性および施工性を向上することができるとともに、コストおよび工期を短縮することができる。   Therefore, even if the first reinforcing flange 61 is attached to the inner flange portion 12a, the compressive load can be transmitted linearly from the inner flange portion 12a to the reinforcing member 53 through the leg portion 65. On the other hand, the tensile load can be transmitted to the outer flange portion 12b by the long-axis bolt 66. Therefore, it becomes possible to cope with both compression and tension loads. Further, the fastening bolts 35 and 45 between the flange portions 12a and 12b can be replaced one by one and replaced with the long-axis bolt 66 for re-fastening. As a result, the strength reduction of the flange fastening portion at the time of mounting the reinforcing device 50 is minimized, and provisional reinforcement required when removing a plurality of bolts 35 and 45 as in the prior art is eliminated. Can do. Thus, safety and workability can be improved, and costs and work periods can be shortened.

また、前記端部支持部材51,52間を連結する補強材53は、前記第1補強フランジ61において、前記脚部65が立設される側とは反対側で、かつ前記長軸ボルト66またはナットと干渉しない位置に設けられればよい。このため、従来のようにボルトまたはナットを回避するためにフランジ部12の外周側まで荷重の伝達経路が大きく迂回するようなことはなく、強度を向上することができるとともに、荷重に対する応答性を向上することができる。   Further, the reinforcing member 53 that connects between the end support members 51 and 52 is the opposite side of the first reinforcing flange 61 from the side on which the leg portion 65 is erected, and the long shaft bolt 66 or What is necessary is just to provide in the position which does not interfere with a nut. For this reason, in order to avoid bolts or nuts as in the prior art, the load transmission path is not greatly detoured to the outer peripheral side of the flange portion 12, and the strength can be improved and the response to the load can be improved. Can be improved.

すなわち、本実施の形態では、図1で示すように、長軸ボルト66の軸線と、補強材53を連結するボルト69の配列方向の軸線69aとの主柱材鋼管10の半径方向の位置がほぼ一致する。一方、本実施の形態では、図3(b)などから理解されるように、前記脚部65−連結片63−連結片64間で、周方向に位置ずれが生じる可能性がある。しかしながら、その周方向のずれは、従来技術のようにフランジ部12を大きく迂回する距離に比べて短く、これによって荷重の伝達経路を短縮することができる。また、従来技術の荷重の伝達経路は、クランク状に折れ曲がったアングル材などで構成されるのに対して、本実施の形態では、第1および第2補強フランジ61,62は、連結片63とともに、箱形に形成され、極めて剛性が高い。したがって、本実施の形態では、前記脚部65または長軸ボルト66から、補強材53への荷重の伝達を速やかに行うことができる。   That is, in the present embodiment, as shown in FIG. 1, the radial position of the main columnar steel pipe 10 between the axis of the long-axis bolt 66 and the axis 69a in the arrangement direction of the bolt 69 connecting the reinforcing member 53 is set. Almost matches. On the other hand, in the present embodiment, as can be understood from FIG. 3B and the like, there is a possibility that a positional shift occurs in the circumferential direction between the leg portion 65, the connecting piece 63, and the connecting piece 64. However, the deviation in the circumferential direction is shorter than the distance that largely bypasses the flange portion 12 as in the prior art, thereby shortening the load transmission path. In addition, the load transmission path of the prior art is formed of an angle member bent in a crank shape or the like, whereas in the present embodiment, the first and second reinforcing flanges 61 and 62 are connected together with the connecting piece 63. It is formed in a box shape and has extremely high rigidity. Therefore, in the present embodiment, it is possible to quickly transmit the load from the leg portion 65 or the long shaft bolt 66 to the reinforcing member 53.

また、本実施の形態の補強装置50では、前記第1補強フランジ61に直接前記補強材53を取付ける場合、ボルト穴611を避けて補強材53を取付ける必要があるのに対して、第2補強フランジ62を介在して、それに補強材53を取付けているので、補強材53の数や取付け位置を任意に定めることができる。   Further, in the reinforcing device 50 of the present embodiment, when the reinforcing material 53 is directly attached to the first reinforcing flange 61, it is necessary to avoid the bolt hole 611 and attach the reinforcing material 53, whereas the second reinforcing material Since the reinforcing material 53 is attached to the flange 62, the number and the mounting positions of the reinforcing material 53 can be arbitrarily determined.

1 鋼管鉄塔
2 主柱材
3 腹材
4 アーム
10 主柱材鋼管
11 鋼管本体部
12;12a,12b フランジ部
13 リブ
50 補強装置
51,52 端部支持部材
51a,51b;52a,52b 部材
53 補強材
53a,53b アングル材
61 第1補強フランジ
611 ボルト穴
612 凹部
62 第2補強フランジ
622 凹部
63 連結片
64 連結片
641 取付け穴
65 脚部
66 長軸ボルト
67 バンド
67a,67b 部材
67a1,67b1 バンド筒部
67a2,67b2 バンド連結部
67a3,67b3 補強材支持片
68,69 ボルト
DESCRIPTION OF SYMBOLS 1 Steel pipe tower 2 Main pillar material 3 Abdominal material 4 Arm 10 Main pillar material steel pipe 11 Steel pipe main-body part 12; 12a, 12b Flange part 13 Rib 50 Reinforcement device 51,52 End support member 51a, 51b; 52a, 52b Member 53 Reinforcement Material 53a, 53b Angle material 61 First reinforcement flange 611 Bolt hole 612 Recess 62 Second reinforcement flange 622 Recess 63 Connection piece 64 Connection piece 641 Mounting hole 65 Leg portion 66 Long shaft bolt 67 Bands 67a, 67b Members 67a1, 67b1 Band cylinder Portions 67a2 and 67b2 Band connecting portions 67a3 and 67b3 Reinforcing material support pieces 68 and 69 Bolts

Claims (4)

  1. 鋼管本体部の両端にフランジ部が一体形成されて成る主柱材鋼管が、前記フランジ部でボルトおよびナットによってその長手方向に互いに連結されることで主柱材が構成された鋼管鉄塔における前記主柱材の補強装置において、
    前記両端のフランジ部にそれぞれ搭載されて前記鋼管本体部を周方向から取り囲み、着脱のために前記周方向に複数に分割形成される一対の端部支持部材と、
    前記鋼管本体部に沿って延び、前記一対の端部支持部材間を連結する補強材と、を備え、
    前記各端部支持部材は、
    前記フランジ部と平行に配置されて、円弧状に前記周方向に複数に分割形成され、前記フランジ部における前記ボルトが挿通されるボルト穴に対応した位置にボルト穴を有するとともに、一方の面側に前記補強材が連結される第1補強フランジと、
    前記第1補強フランジの他方の面側において、前記フランジ部の少なくとも前記ボルトまたはナットの締結位置を回避して複数配置され、その部材先端縁が前記フランジ部に接触し、かつ前記ボルトまたはナットの取り外し用の空間を形成するための高さを有する脚部と、
    前記第1補強フランジのボルト穴及び前記フランジ部のボルト穴に挿通され、前記ボルトに置き換えて使用される長軸ボルトと、を含むことを特徴とする鋼管鉄塔の補強装置。
    The main column steel pipe in which the flange portion is integrally formed at both ends of the steel pipe main body portion is connected to each other in the longitudinal direction by bolts and nuts at the flange portion, and the main column steel tube in which the main column material is configured In the column reinforcement device,
    A pair of end support members that are respectively mounted on the flange portions at both ends, surround the steel pipe main body portion from the circumferential direction, and are divided into a plurality of portions in the circumferential direction for attachment and detachment;
    A reinforcing material extending along the steel pipe main body and connecting the pair of end support members,
    Each of the end support members is
    It is arranged in parallel with the flange part, is divided into a plurality of parts in the circumferential direction in an arc shape, has a bolt hole at a position corresponding to the bolt hole through which the bolt is inserted, and one surface side A first reinforcing flange to which the reinforcing material is coupled,
    On the other surface side of the first reinforcing flange, a plurality of the flange portions are arranged so as to avoid at least the fastening positions of the bolts or nuts, the tip ends of the members are in contact with the flange portions, and the bolts or nuts A leg having a height for forming a space for removal;
    A steel pipe tower reinforcing device comprising: a bolt hole of the first reinforcing flange and a long-axis bolt which is inserted into the bolt hole of the flange portion and used in place of the bolt.
  2. 前記第1補強フランジの前記一方の面側に平行に配置される第2補強フランジと、
    前記第1および第2補強フランジ間を連結する連結片と、をさらに備え、
    前記補強材は、前記第2補強フランジの第1補強フランジとは反対側に連結されることを特徴とする請求項1記載の鋼管鉄塔の補強装置。
    A second reinforcing flange disposed in parallel to the one surface side of the first reinforcing flange;
    A connecting piece for connecting the first and second reinforcing flanges;
    The steel pipe tower reinforcing device according to claim 1, wherein the reinforcing member is connected to the second reinforcing flange on the side opposite to the first reinforcing flange.
  3. 前記各端部支持部材において、前記補強材が連結される連結片は、半径方向に延びる板状の部材から成り、その複数が周方向に等間隔に設けられ、
    前記補強材は、軸直角断面がL字状のアングル材から成り、
    各連結片には、2つの前記アングル材が、その背面を対向させて取付けられることを特徴とする請求項1または2記載の鋼管鉄塔の補強装置。
    In each of the end support members, the connecting piece to which the reinforcing material is connected is composed of a plate-like member extending in the radial direction, and a plurality of the pieces are provided at equal intervals in the circumferential direction.
    The reinforcing member is made of an angle member having an L-shaped cross section perpendicular to the axis,
    The steel pipe tower reinforcing device according to claim 1 or 2, wherein two angle members are attached to each connecting piece with their rear surfaces facing each other.
  4. 前記周方向に複数に分割形成され、前記鋼管本体部に取付けられ、相互に組合せられる固定部材をさらに備え、
    前記固定部材は、
    前記鋼管本体部の外周を囲むバンド筒部と、
    前記バンド筒部の外周面において、前記連結片に対応した位置から半径方向に延びて形成され、前記補強材を支持する支持片と、を含むことを特徴とする請求項3記載の鋼管鉄塔の補強装置。
    A fixing member that is divided into a plurality of parts in the circumferential direction, is attached to the steel pipe body, and is combined with each other,
    The fixing member is
    A band tube part surrounding the outer periphery of the steel pipe body part;
    The steel pipe tower according to claim 3, further comprising: a support piece configured to extend in a radial direction from a position corresponding to the connecting piece on the outer peripheral surface of the band tube portion, and to support the reinforcing material. Reinforcement device.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017503121A (en) * 2013-11-29 2017-01-26 ギャズトランスポルト エ テクニギャズ Self-supporting box structure for fluid storage tank insulation.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005248487A (en) * 2004-03-02 2005-09-15 Kyushu Electric Power Co Inc Reinforcing structure by splice round material for hollow steel pipe 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005248487A (en) * 2004-03-02 2005-09-15 Kyushu Electric Power Co Inc Reinforcing structure by splice round material for hollow steel pipe 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
JP2017503121A (en) * 2013-11-29 2017-01-26 ギャズトランスポルト エ テクニギャズ Self-supporting box structure for fluid storage tank insulation.

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