JP3413599B2 - Uninterruptible elevated foundation switching method - Google Patents
Uninterruptible elevated foundation switching methodInfo
- Publication number
- JP3413599B2 JP3413599B2 JP2000343250A JP2000343250A JP3413599B2 JP 3413599 B2 JP3413599 B2 JP 3413599B2 JP 2000343250 A JP2000343250 A JP 2000343250A JP 2000343250 A JP2000343250 A JP 2000343250A JP 3413599 B2 JP3413599 B2 JP 3413599B2
- Authority
- JP
- Japan
- Prior art keywords
- tower
- foundation
- elevated
- existing
- switching method
- 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
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、無停電高架基礎
切替工法に関するものである。
【０００２】
【従来の技術】従来、送電用・無線・配電用の既存の４
脚基礎構造の鉄塔に対して、例えば，道路拡張工事によ
り、その鉄塔の一部が支障となることから、該鉄塔の移
転を求められる場合がある。（図１参照）
【０００３】その移転の手段として、鉄塔の建替が考え
られるが、仮ルートにより線路を一端迂回させた後に新
ルートを設置する工法で実施していたが、該仮ルート工
事では新幹線等の線路横断物件が多く、特に新幹線横断
箇所の架線作業は、新幹線が走行する時間，即ち，昼間
は工事が出来ず、夜間の短時間に作業する必要があるこ
とより、その作業は大変過酷で、かつ危険である。ま
た、仮ルート工事においても、市街地通過のため、用地
確保等が困難である等に深刻な問題があった。
【０００４】また、移転あるいは建替えする鉄塔が、送
電用鉄塔の場合には、作業により長時間、停電を余儀な
くされるか、無停電で施工する必要があるが、この作業
は極めて煩雑であった。
【０００５】
【発明が解決しようとする課題】そこでこの発明は、上
記の欠点を除去・解決し、既設の４脚基礎構造の鉄塔を
そのまま存続させた状態で、単柱基礎構造体の任意の高
さで前記既設鉄塔中間部の脚部材に、碇材を取付け、該
高架型の単柱基礎構造体に固定し、固定した下部の鉄塔
脚部を撤去することにより、支障となっている基礎脚部
位置に人や車両が通行できる空間を確保し、しかも、無
停電の状態で高架基礎へ切り替えることのできる無停電
高架基礎切替工法を開発・提供するものである。
【０００６】
【課題を解決するための手段】この発明は、既設の４脚
基礎構造の鉄塔をそのまま存続させた状態で、該鉄塔脚
に囲まれた地面の中心位置に、高架型の単柱基礎構造体
を設置し、該単柱基礎構造体の任意の高さで前記既設鉄
塔中間部の鉄塔脚に、碇材を取付け、該高架型の単柱基
礎構造体より各鉄塔脚（碇材を取り付けた位置）方向へ
梁構造体を張り出し、碇材を巻き込みコンクリートを定
着・固定させた後、既設の鉄塔脚の梁構造体下部を切断
・除去することを特徴とする無停電高架基礎切替工法か
らなるものである。
【０００７】
【発明の実施の形態】そして、この発明の一実施例を図
面に従って説明すると、既設の４脚構造の鉄塔（１）を
そのまま存続させた状態で、該鉄塔脚部（１ａ）（１
ｂ）（１ｃ）（１ｄ）に囲まれた地面の中心位置（Ｘ）
に、高架型の単柱基礎構造体（２）を設置し、該単柱基
礎構造体（２）の任意の高さで前記既設鉄塔中間部の主
柱材（Ｙ）に、碇材（Ｚ）を取付け、該高架型の単柱基
礎構造体（２）より各鉄塔脚（碇材を取り付けた位置）
方向へ梁部（２ａ）構造体を張り出し、碇材（Ｚ）を巻
き込み型枠（Ｋ）にコンクリートを流し、該コンクリー
トを定着・固定させ、既設の鉄塔脚の梁構造体下部を切
断・除去することを特徴とする無停電高架基礎切替工法
からなるものである。
【０００８】しかし、当然、既設の鉄塔脚の梁構造体下
部を切断・除去する際には、梁部コンクリートを打設し
た後、４週間以上経過した後に、テストピースによる強
度試験により安全性を確認した後に行うものである。
【０００９】また、高架型の単柱基礎構造体（２）を設
置する一例を述べると、先ず、深礎掘削に伴い止水や地
盤強度増加を兼ねて砂質・砂礫質等へ薬液を注入し、ラ
イナー支保工により深礎掘削する。地面より３メートル
程度までは大型掘削機で地上から掘削し、以深は小型
（電動）掘削機を坑内に入れて人力と並行して掘削する
ものである。
【００１０】さらに、高架型の単柱基礎構造体（２）の
梁部（２ａ）設置に伴い、既設鉄塔の腹材および補助材
が支障となるため、既設鉄塔の構造の一部をダブルワー
レン結構からＫ結構（補助材なし）に改造する必要があ
る。（図２の『薬物注入』、『鉄塔改造および基礎掘
削』を参照）
【００１１】既設鉄塔上部構造より加わる荷重の基礎体
の梁部分で各脚（１ａ）（１ｂ）（１ｃ）（１ｄ）を独
立定着指せるため、事前に設計定着位置へ碇材（Ｚ）を
取り付けて梁部（２ａ）コンクリート打設時に巻き込み
碇材（Ｚ）を定着させるものである。（図３参照）
【００１２】また、地面以下の深礎基礎部分へコンクリ
ートを打設し、地上柱体部の型枠（接触面テーパー）を
組み立てコンクリートを打設し、柱体部分の構造を完成
させるものである。
【００１３】
【発明の効果】この発明によると、高架型の単柱基礎構
造体は、既設の４脚基礎構造の鉄塔に囲まれた地面の中
心位置に設置するため、特別に別の場所を使用せず、鉄
塔敷地内で作業ができ、また、従来の鉄塔支障移転工法
に比べて、仮ルートを設ける必要がなく、約３０％のコ
スト削減が可能となり、しかも、無停電で実施できるた
め、供給支障および工事施工者の高所・活線接近工事に
伴う危険作業が無くなり、作業員の安全が確保できる等
極めて有益なる効果を奏するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterrupted elevated foundation switching method. 2. Description of the Related Art Conventionally, existing 4 types for power transmission, radio, and power distribution are known.
For example, a part of a tower having a leg foundation structure may be obstructed by, for example, road expansion work, so that the tower may be required to be relocated. (Refer to FIG. 1.) As a means of the relocation, rebuilding of a steel tower is conceivable, but a method of temporarily circumventing a track by a temporary route and then installing a new route has been implemented. There are many railway crossing properties such as the Shinkansen. Especially, the overhead line work at the Shinkansen crossing point is not possible during the time when the Shinkansen runs, that is, during the daytime, it is necessary to work in the short time at night. Very harsh and dangerous. In addition, even in the temporary route construction, there was a serious problem such as difficulty in securing land for passing through the city. If the tower to be relocated or rebuilt is a power transmission tower, it is necessary to perform a long-term power outage for a long time, or it is necessary to carry out the work without a power outage. However, this work is extremely complicated. Was. SUMMARY OF THE INVENTION [0005] Accordingly, the present invention eliminates and solves the above-mentioned drawbacks, and makes it possible to arbitrarily construct a single-post foundation structure while maintaining the existing four-legged foundation tower as it is. An anchor is attached to the leg member at the intermediate part of the existing tower at a height, fixed to the elevated single-column base structure, and the fixed lower tower leg is removed, thereby disturbing the foundation. It is intended to develop and provide an uninterruptible elevated foundation switching method capable of securing a space for a person or a vehicle at the position of a leg and switching to an elevated foundation in an uninterrupted state. SUMMARY OF THE INVENTION The present invention provides an elevated single-poster at the center of the ground surrounded by the existing tower legs while the existing tower having a four-legged foundation structure is maintained as it is. A base structure is installed, an anchoring material is attached to a tower leg in the middle of the existing tower at an arbitrary height of the single-column base structure, and each of the tower legs (anchor material) is attached from the elevated single-column base structure. Uninterruptible elevated foundation switching, characterized by extending the beam structure in the direction of installation), incorporating anchoring material, fixing and fixing concrete, and then cutting and removing the lower part of the beam structure of the existing steel tower legs. It consists of a construction method. An embodiment of the present invention will be described with reference to the accompanying drawings. In the state where an existing four-legged steel tower (1) is maintained as it is, the steel tower legs (1a) ( 1
b) The center position (X) of the ground surrounded by (1c) and (1d)
An elevated single-post foundation structure (2) is installed on the main pillar (Y) at the intermediate portion of the existing tower at an arbitrary height of the single-post foundation structure (2). ), And each of the tower legs (at the position where the anchor is attached) from the elevated single-column substructure (2).
The beam (2a) structure is extended in the direction, the anchoring material (Z) is wrapped around, the concrete is poured into the formwork (K), the concrete is fixed and fixed, and the lower part of the beam structure of the existing steel tower leg is cut and removed. The method comprises an uninterruptible elevated foundation switching method. However, naturally, when cutting and removing the lower part of the beam structure of the existing steel tower legs, after placing the beam concrete, at least four weeks have passed, and after a lapse of at least four weeks, a safety test has been carried out using a test piece. This is done after confirmation. An example of installing an elevated single-column substructure (2) is as follows. First, a chemical solution is injected into sandy, gravel, etc. due to water stoppage and increase in ground strength due to excavation of a deep foundation. Then, excavation of deep foundation is carried out by liner support. A large excavator excavates from the ground up to about 3 meters from the ground, and a small (motorized) excavator is placed in the pit and excavated in parallel with human power. [0010] Further, with the installation of the beam portion (2a) of the elevated single-column foundation structure (2), the abdominal material and the auxiliary material of the existing steel tower hinder, so a part of the structure of the existing steel tower is double-warren. It needs to be remodeled from fine to K fine (no auxiliary material). (See “Drug injection” and “Remodeling of tower and excavation of foundation” in FIG. 2) Each of the legs (1a) (1b) (1c) (1d) at the beam portion of the foundation under the load applied from the upper structure of the existing tower In this case, the anchoring material (Z) is attached to the designed fixing position in advance so that the anchoring material (Z) is fixed when the beam (2a) is put into concrete. (See FIG. 3) Concrete is poured into a deep foundation foundation below the ground, and a formwork (contact surface taper) of the above-ground column is assembled and concrete is poured to reduce the structure of the column. It is to be completed. According to the present invention, the elevated single-column substructure is installed at the center of the ground surrounded by the existing four-legged substructure, so that a special place is required. It is possible to work on the site of the tower without using it, and it is not necessary to set up a temporary route compared to the conventional method of moving the tower for obstacles. In addition, the present invention has extremely beneficial effects, such as obstruction of supply and dangerous work associated with construction workers approaching high places and liveliness, and ensuring the safety of workers.
【図面の簡単な説明】
【図１】この発明の一実施例を示す説明図である。
【図２】この発明の一実施例を示す説明図である。
【図３】この発明の使用方法を示す断面図である。
【図４】この発明に使用する高架型の単柱基礎構造体の
一実施例を示す平面図である。
【図５】この発明に使用する高架型の単柱基礎構造体の
梁部の一実施例を示す一部欠截斜視図である。
【図６】この発明の完成状態を示す正面図である。
【符号の説明】
１ 既設の４脚構造の鉄塔
１ａ 鉄塔脚
１ｂ 鉄塔脚
１ｃ 鉄塔脚
１ｄ 鉄塔脚
２ 高架型の単柱基礎構造体
２ａ 梁部
Ｋ 型枠
Ｘ 中心位置
Ｙ 既設鉄塔中間部の主柱材
Ｚ 碇材BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing one embodiment of the present invention. FIG. 2 is an explanatory diagram showing one embodiment of the present invention. FIG. 3 is a sectional view showing a method of using the present invention. FIG. 4 is a plan view showing one embodiment of an elevated single-column substructure used in the present invention. FIG. 5 is a partially cutaway perspective view showing an embodiment of a beam portion of an elevated single-column substructure used in the present invention. FIG. 6 is a front view showing a completed state of the present invention. [Description of Signs] 1 Existing 4-legged steel tower 1a Steel tower leg 1b Steel tower leg 1c Steel tower leg 1d Steel tower leg 2 Elevated single-column foundation structure 2a Beam K Form X Center position Y Main part of the existing steel tower middle part Column material Z anchor material
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 27/42 H02G 1/02 307 H02G 7/00 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) E02D 27/42 H02G 1/02 307 H02G 7/00
Claims (1)
続させた状態で、該鉄塔脚に囲まれた地面の中心位置
に、高架型の単柱基礎構造体を設置し、該単柱基礎構造
体の任意の高さで前記既設鉄塔中間部の主柱材に、碇材
を取付け、該高架型の単柱基礎構造体より各鉄塔脚の方
向，即ち、碇材を取り付けた位置方向へ、梁構造体を張
り出し、碇材を巻き込みコンクリートを定着・固定させ
た後、既設の鉄塔脚の梁構造体下部を切断・除去するこ
とを特徴とする無停電高架基礎切替工法。(57) [Claims 1] An elevated single-post foundation structure at the center of the ground surrounded by the tower legs, with the existing four-legged foundation tower remaining as it is. A body is installed, and an anchoring material is attached to the main pillar member at the intermediate portion of the existing steel tower at an arbitrary height of the single pillar foundation structure, and the direction of each tower leg from the elevated single pillar foundation structure, that is, An uninterruptible power supply characterized by extending the beam structure in the direction of the anchor material, anchoring the anchor material, fixing and fixing the concrete, and then cutting and removing the lower part of the existing tower structure. Elevated foundation switching method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000343250A JP3413599B2 (en) | 2000-11-10 | 2000-11-10 | Uninterruptible elevated foundation switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000343250A JP3413599B2 (en) | 2000-11-10 | 2000-11-10 | Uninterruptible elevated foundation switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002146810A JP2002146810A (en) | 2002-05-22 |
| JP3413599B2 true JP3413599B2 (en) | 2003-06-03 |
Family
ID=18817650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000343250A Expired - Lifetime JP3413599B2 (en) | 2000-11-10 | 2000-11-10 | Uninterruptible elevated foundation switching method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3413599B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882882A (en) * | 2014-04-02 | 2014-06-25 | 中国建筑第八工程局有限公司 | Integral jacking type tower crane foundation platform structure |
| CN105386457A (en) * | 2015-12-15 | 2016-03-09 | 贵州电力设计研究院 | Iron tower foundation structure of high slope overhead transmission line iron tower |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587406A (en) * | 2012-03-13 | 2012-07-18 | 中天建设集团有限公司 | Pouring construction method of concrete-filled tower crane foundation lattice column |
| CN103790176B (en) * | 2014-03-06 | 2016-09-21 | 中国建筑第二工程局有限公司 | A kind of construction method of pre-buried manomelia rod structure |
| JP6834226B2 (en) * | 2016-08-02 | 2021-02-24 | 東京電力ホールディングス株式会社 | Pile foundation and tower rebuilding method |
-
2000
- 2000-11-10 JP JP2000343250A patent/JP3413599B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882882A (en) * | 2014-04-02 | 2014-06-25 | 中国建筑第八工程局有限公司 | Integral jacking type tower crane foundation platform structure |
| CN103882882B (en) * | 2014-04-02 | 2017-04-05 | 中国建筑第八工程局有限公司 | Integral jacking formula tower crane platform structure |
| CN105386457A (en) * | 2015-12-15 | 2016-03-09 | 贵州电力设计研究院 | Iron tower foundation structure of high slope overhead transmission line iron tower |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002146810A (en) | 2002-05-22 |
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