JPH0678695B2 - Support structure of branch line in branch tower - Google Patents
Support structure of branch line in branch towerInfo
- Publication number
- JPH0678695B2 JPH0678695B2 JP27841390A JP27841390A JPH0678695B2 JP H0678695 B2 JPH0678695 B2 JP H0678695B2 JP 27841390 A JP27841390 A JP 27841390A JP 27841390 A JP27841390 A JP 27841390A JP H0678695 B2 JPH0678695 B2 JP H0678695B2
- Authority
- JP
- Japan
- Prior art keywords
- branch line
- beam body
- tower
- branch
- horizontal beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ワイヤーロープやケーブルより成る支線を塔
体の周囲に張設した支線式タワーにおける支線支持構造
に関するものである。Description: TECHNICAL FIELD The present invention relates to a branch line support structure in a branch line tower in which a branch line composed of a wire rope or a cable is stretched around a tower body.
［従来の技術］ 従来の支線式タワー（昭和55年９月25日社団法人日本建
築学会編集・発光「塔状鋼構造設計指針・同解説」第14
7頁〜第158頁所載）では、支線の支持手段としてはアン
カーブロックが使用されている。[Prior Art] Conventional branch line tower (September 25, 1980, edited by The Architectural Institute of Japan, Luminous "Tower Steel Structural Design Guidelines / Commentary" No. 14
In pages 7 to 158), an anchor block is used as a support for the branch line.
すなわち、第５図に例示したように、地盤１に基部を定
着された塔体２は、地盤１に埋設した鉄筋コンクリート
製アンカーブロック３と塔体２の頂部との間に張設した
支線４によって、風荷重による転倒モーメントに対抗し
ている。この各支線４の地盤１への支持定着は、アンカ
ーブロック３によって行なわれており、風圧力によって
支線に生じる軸力、すなわち支線の引抜き力は、アンカ
ーブロック３の重量とアンカーブロックの前面受働土圧
とで対抗されている。That is, as illustrated in FIG. 5, the tower body 2 whose base is fixed to the ground 1 is formed by the branch line 4 stretched between the reinforced concrete anchor block 3 buried in the ground 1 and the top of the tower body 2. , Against the tipping moment due to wind load. The anchor block 3 supports and anchors each branch line 4 to the ground, and the axial force generated on the branch line by wind pressure, that is, the pull-out force of the branch line, is determined by the weight of the anchor block 3 and the front surface soil of the anchor block. It is opposed by pressure.
タワーが高くなると、風荷重を受ける支線４の実効長さ
も長くなるため、支線４の地盤１からの引抜きに充分対
抗するには、アンカーブロック３の重量を増大させる必
要があるが、アンカーブロック３の重量の増大には必然
的に体積の増大を伴なうため、この重量増大には場所的
にも一定の制約がある。As the tower height increases, the effective length of the branch line 4 that receives the wind load also increases. Therefore, in order to sufficiently oppose the pulling out of the branch line 4 from the ground 1, it is necessary to increase the weight of the anchor block 3, but the anchor block 3 Since the increase in the weight of the P.sub.1 inevitably accompanies the increase in the volume, the increase in the weight has certain restrictions in place.
第６図と第７図に示したように支線４を地盤に打込んだ
杭５に定着させることも提案されているが、杭５が岩盤
まで食込んだ堅固な支持杭として機能しているのか、あ
るいは岩盤に未到達の単なる摩擦杭として機能している
だけなのかを検証することは、実際上不可能であるた
め、杭を利用した定着方式に依存することは危険であ
る。また、アンカーブロック３や支持杭５を利用する方
式では、工期が長くなり、工費も嵩むことになった。It has been proposed to fix the branch line 4 to the pile 5 driven into the ground as shown in Figs. 6 and 7, but the pile 5 functions as a solid support pile that penetrates into the rock. Since it is practically impossible to verify whether or not it is merely functioning as a friction pile that has not reached the bedrock, it is dangerous to rely on the anchoring method using piles. In addition, the method using the anchor block 3 and the support pile 5 requires a long construction period and a high construction cost.
［発明が解決しようとする課題］ 従って本発明の目的は、アンカーブロック方式や杭定着
方式より脱却し、力学的に内部平衡系を構成することに
よって支線の大きな軸力を処理するようにした支線式タ
ワーにおける支線の支持構造を提供することである。[PROBLEMS TO BE SOLVED BY THE INVENTION] Therefore, an object of the present invention is to break away from an anchor block system or a pile fixing system, and dynamically construct an internal equilibrium system to process a large axial force of a branch line. The purpose of the present invention is to provide a support structure for branch lines in a tower.
［課題を解決するための手段］ 以下、添付図面中の参照符合を用いて説明すると、本発
明の支線式タワーにおける支線の支持構造では、地盤11
に定着した水平梁体12の上面側に塔体13を固設し、水平
梁体12の下面側に垂直梁体14を固設し、水平梁体12に支
線支承部15を設け、塔体13の頂部と垂直梁体14の下端部
との間に支線支承部15を介して支線16を張設する。[Means for Solving the Problems] Hereinafter, description will be given using the reference numerals in the accompanying drawings.
The column body 13 is fixed to the upper surface side of the horizontal beam body 12 fixed to the vertical beam body 14, the vertical beam body 14 is fixed to the lower surface side of the horizontal beam body 12, and the branch line support portion 15 is provided on the horizontal beam body 12. A branch line 16 is stretched between a top part of 13 and a lower end part of a vertical beam body 14 through a branch line support part 15.
この支線支承部15は、支線16を水平梁体12に対して可動
に支持するローラやバネ体で構成され、あるいは支線16
を水平梁体12に対して固定支持する定着具で構成され
る。This branch line support portion 15 is composed of a roller or a spring body that movably supports the branch line 16 with respect to the horizontal beam body 12, or the branch line 16
It is composed of a fixing tool for fixing and supporting the to the horizontal beam body 12.
［作用］ 支線16を水平梁体12の支線支承部15に固定支持した場
合、塔体13の頂部と支線支承部15との間に張設した風上
側の支線16の支線部分16aが風荷重を受けて、支線部分1
6aに軸力が生じたとき、該軸力は水平梁体12の剛性によ
って対杭され、該軸力による水平梁体12の曲げモーメン
トは、該支線支承部15と垂直梁体14の下端部との間に張
設した支線部分16bを介して垂直梁体14の剛性によって
対杭される。支線部分16bに牽引されて垂直梁体14が受
ける曲げモーメントは、風下側に張設された別の支線16
の支線分16bを介して水平梁体12によって対抗され、こ
の水平梁体12の曲げモーメントは、該風下側支線16の支
線部分16aを介して塔体13によって対抗される。[Operation] When the branch line 16 is fixedly supported by the branch line support portion 15 of the horizontal beam body 12, the branch line portion 16a of the windward branch line 16 stretched between the top of the tower body 13 and the branch line support portion 15 is subjected to wind load. In response, branch line part 1
When an axial force is generated in 6a, the axial force is paired by the rigidity of the horizontal beam body 12, and the bending moment of the horizontal beam body 12 due to the axial force is the lower end portions of the branch line support portion 15 and the vertical beam body 14. By the rigidity of the vertical beam body (14), it is paired with a pair of piles via a branch line portion (16b) stretched between the and. The bending moment received by the vertical beam body 14 by being pulled by the branch line portion 16b is different from the other branch line 16 stretched on the leeward side.
Is opposed by the horizontal beam body 12 via the branch line segment 16b, and the bending moment of the horizontal beam body 12 is opposed by the tower body 13 via the branch line portion 16a of the leeward side branch line 16.
支線16を水平梁体12の支線支承部15に可動支持した場
合、塔体13の頂部と支線支承部15間の支線部分16aに風
荷重で軸力が生じたとき、該軸力は支線支承部15と垂直
梁体14間の支線部分16bを介して垂直梁体14に伝えら
れ、軸力は水平梁体12と垂直梁体14の剛性によって対抗
される。該軸力による垂直梁体14の曲げモーメントは、
風下側に張設された別の支線16を介して水平梁体12と塔
体13によって対抗される。When the branch line 16 is movably supported by the branch line support portion 15 of the horizontal beam body 12, when the axial force is generated by the wind load on the branch line portion 16a between the top of the tower body 13 and the branch line support portion 15, the axial force is generated. The axial force is transmitted to the vertical beam body 14 via the branch line portion 16b between the portion 15 and the vertical beam body 14, and the axial force is opposed by the rigidity of the horizontal beam body 12 and the vertical beam body 14. The bending moment of the vertical beam body 14 due to the axial force is
A horizontal beam body (12) and a tower body (13) oppose each other via another branch line (16) stretched on the leeward side.
［実施例］ 第１図と第２図に示した実施例では、円盤形の水平梁体
12は地盤11に埋設され、所定本数の摩擦杭17に定着支持
されている。塔体13は水平梁体12の上面側中央部に固設
されている。支線支承部15としては、水平梁体12の外周
部に装着した３連のローラが使用され、８個の支線支承
部15は、塔体13を中心とする同一円周上に等間隔に配置
されている。[Embodiment] In the embodiment shown in FIGS. 1 and 2, a disc-shaped horizontal beam member is used.
12 is buried in the ground 11 and is fixedly supported by a predetermined number of friction piles 17. The tower body 13 is fixed to the central portion on the upper surface side of the horizontal beam body 12. As the branch line support portion 15, three rollers mounted on the outer peripheral portion of the horizontal beam body 12 are used, and the eight branch line support portions 15 are arranged at equal intervals on the same circumference centered on the tower body 13. Has been done.
円錐台形の垂直梁体14は、塔体13の中心軸線の延長上に
おいて大径基部を水平梁体12の下面側中央部に剛接合さ
れており、垂直梁体14の小径下端部には構造用ケーブル
より成る支線16が固定される。塔体13と垂直梁体14は水
平梁体12に対して片持ち梁となっている。The frustoconical vertical beam body 14 has a large-diameter base portion rigidly joined to the central portion on the lower surface side of the horizontal beam body 12 on the extension of the central axis of the tower body 13, and a small-diameter lower end portion of the vertical beam body 14 has a structure. A branch line 16 made of a cable for use is fixed. The tower body 13 and the vertical beam body 14 are cantilevered with respect to the horizontal beam body 12.
風上側の支線16と風下側の支線16は、塔体13の固定部と
垂直梁体14の固定部の仲介により一つの閉ループを描い
ている。The windward branch line 16 and the leeward branch line 16 form one closed loop by interposing the fixed portion of the tower body 13 and the fixed portion of the vertical beam body 14.
これら支線16の集合体には、各支線16が双曲線に近似し
た所望の曲線を描くように、また各支線16に所定のプレ
テンションを付与するために、水平スポーク部材18を上
下複数個設けてある。これら水平スポーク部材18の直径
は、下方から上方に向って逐次縮小されている。A plurality of horizontal spoke members 18 are provided above and below the assembly of the branch lines 16 so that each branch line 16 draws a desired curve approximate to a hyperbola, and in order to give a predetermined pretension to each branch line 16. is there. The diameter of these horizontal spoke members 18 is gradually reduced from the lower side to the upper side.
第３図と第４図に示した実施例では、円盤形の水平梁体
12は円筒形の側壁構造19に剛接合されており、地盤11と
の間に一定の空間が確保されている。側壁構造19は杭20
に定着されている。In the embodiment shown in FIGS. 3 and 4, a disc-shaped horizontal beam member is used.
12 is rigidly joined to the cylindrical side wall structure 19, and a certain space is secured between the 12 and the ground 11. Side wall structure 19 is pile 20
Has been established in.
垂直梁体14と支線16が突出している水平梁体12の下部空
間は、側壁構造19の高さを適当に選定することによっ
て、駐車場や球場、催事用ホール等として有効利用され
る。また、水平梁体12それ自体にレストランやホテル、
オフィスルーム、ショールーム等の諸施設を設けること
もできる。The lower space of the horizontal beam body 12 from which the vertical beam body 14 and the branch line 16 project is effectively used as a parking lot, a stadium, an event hall, etc. by appropriately selecting the height of the side wall structure 19. In addition, the horizontal beam body 12 itself in a restaurant or hotel,
Various facilities such as office rooms and showrooms can also be provided.
［発明の効果］ 以上のように本発明の支線式タワーは、地盤11に定着し
た水平梁体12の上面側に塔体13を固設し、水平梁体12の
下面側に垂直梁体14を固設し、水平梁体12に支線支承部
15を設け、塔体13の頂部と垂直梁体14の下端部との間に
支線支承部15を介して支線16を張設したものであり、水
平梁体12と塔体13と垂直梁体14間に支線16を閉ループを
描くように張設したことによって、これらが力学的に内
部釣合系を構成しているので、風荷重によって支線16に
生じた軸力は、支線部分16aと支線部分16bを介して水平
梁体12と垂直梁体14及び塔体13で対抗されることにな
り、そのため、水平梁体12と垂直梁体14と塔体13及び支
線16の最適設計を行なうだけで、支線16の大きな軸力を
的確に処理することができ、アンカーブロックや杭定着
に依存した従来タワーと比べて、工期の大幅な短縮と工
費の低減が可能となり、大きな風荷重を受けても転倒す
ることがない高い安定性の支線式タワーを充分な信頼性
のもとに設計施工することができる。As described above, in the branch line tower of the present invention, the tower body 13 is fixedly installed on the upper surface side of the horizontal beam body 12 fixed to the ground 11, and the vertical beam body 14 is provided on the lower surface side of the horizontal beam body 12. Fixed to the horizontal beam 12 and the branch line support
15 is provided, and a branch line 16 is stretched between the top of the tower body 13 and the lower end of the vertical beam body 14 via a branch line support portion 15, and the horizontal beam body 12, the tower body 13 and the vertical beam body are provided. Since the branch lines 16 are stretched between 14 so as to draw a closed loop, and these dynamically form an internal balance system, the axial force generated on the branch line 16 by the wind load is the same as the branch line portion 16a and the branch line. Since the horizontal beam body 12 and the vertical beam body 14 and the tower body 13 are opposed to each other via the portion 16b, only the optimum design of the horizontal beam body 12, the vertical beam body 14, the tower body 13 and the branch line 16 is performed. With this, it is possible to accurately handle the large axial force of the branch line 16, and it is possible to significantly shorten the construction period and reduce the construction cost compared to the conventional tower that relies on anchor blocks and pile anchoring, and receive a large wind load. It is possible to design and construct a highly stable branch line tower that does not fall over with sufficient reliability.
第１図は本発明の一実施例に係る支線支持構造を採用し
た支線式タワーの概略的な正面図であり、第２図は該支
線式タワーの平面図である。第３図は本発明の別の実施
例に係る支線支持構造を採用した支線式タワーの概略的
な正面図であり、第４図は該支線式タワーの平面図であ
る。 第５図は従来のアンカーブロックによる支線支持構造を
使用した支線式タワーの概略的な正面図である。第６図
は従来の杭による支線支持構造を使用した支線式タワー
の概略的な正面図であり、り、第７図は該支線式タワー
の平面図である。 11…地盤、12…水平梁体、13…塔体、14…垂直梁体、15
…支線支承部、16…支線、16a…支線部分、16b…支線部
分、17…杭、18…水平スポーク部材、19…側壁構造、20
…杭FIG. 1 is a schematic front view of a branch line tower adopting a branch line support structure according to an embodiment of the present invention, and FIG. 2 is a plan view of the branch line tower. FIG. 3 is a schematic front view of a branch line tower adopting a branch line support structure according to another embodiment of the present invention, and FIG. 4 is a plan view of the branch line tower. FIG. 5 is a schematic front view of a branch line tower using a conventional branch line support structure using anchor blocks. FIG. 6 is a schematic front view of a branch line tower using a conventional branch line support structure using piles, and FIG. 7 is a plan view of the branch line tower. 11 ... Ground, 12 ... Horizontal beam, 13 ... Tower, 14 ... Vertical beam, 15
… Branch line support part, 16… Branch line, 16a… Branch line part, 16b… Branch line part, 17… Pile, 18… Horizontal spoke member, 19… Side wall structure, 20
… Pile
Claims (1)
体13を固設し、水平梁体12の下面側に垂直梁体14を固設
し、水平梁体12に支線支承部15を設け、塔体13の頂部と
垂直梁体14の下端部との間に支線支承部15を介して支線
16を張設した支線式タワーにおける支線の支持構造。1. A tower body 13 is fixed to an upper surface side of a horizontal beam body 12 fixed to a ground 11, a vertical beam body 14 is fixed to a lower surface side of the horizontal beam body 12, and a branch line is supported on the horizontal beam body 12. A portion 15 is provided, and a branch line is provided between the top of the tower body 13 and the lower end of the vertical beam body 14 through a branch line support portion 15.
Supporting structure of branch line in branch tower with 16 installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27841390A JPH0678695B2 (en) | 1990-10-17 | 1990-10-17 | Support structure of branch line in branch tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27841390A JPH0678695B2 (en) | 1990-10-17 | 1990-10-17 | Support structure of branch line in branch tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04153478A JPH04153478A (en) | 1992-05-26 |
| JPH0678695B2 true JPH0678695B2 (en) | 1994-10-05 |
Family
ID=17597001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27841390A Expired - Lifetime JPH0678695B2 (en) | 1990-10-17 | 1990-10-17 | Support structure of branch line in branch tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0678695B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8250817B2 (en) * | 2010-07-06 | 2012-08-28 | American Tower Corporation | Guy anchor reinforcement |
| CN109869022B (en) * | 2019-04-04 | 2024-06-07 | 陈东兆 | Prestressed cable net steel cooling tower |
-
1990
- 1990-10-17 JP JP27841390A patent/JPH0678695B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04153478A (en) | 1992-05-26 |
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