JPH0421792B2 - - Google Patents
Info
- Publication number
- JPH0421792B2 JPH0421792B2 JP3227785A JP3227785A JPH0421792B2 JP H0421792 B2 JPH0421792 B2 JP H0421792B2 JP 3227785 A JP3227785 A JP 3227785A JP 3227785 A JP3227785 A JP 3227785A JP H0421792 B2 JPH0421792 B2 JP H0421792B2
- Authority
- JP
- Japan
- Prior art keywords
- old
- steel tower
- tower
- new
- ground
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 239000004567 concrete Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 13
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は既設送電線を仮工事することなく、ま
た既設鉄塔をそのまま使用した状態で旧地盤から
新地盤に継脚する既設鉄塔の継脚工法に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention is a method for connecting legs of an existing steel tower from old ground to new ground without performing temporary construction on existing power transmission lines, and while using the existing tower as it is. Regarding construction methods.
（従来技術）
第８図Ａのように丘綾１上に既設鉄塔２がある
場合、最近の宅地造成や土地改良などにより、旧
鉄塔ルートが鉄塔移設を余儀なくされることが多
い。しかし土地の造成よりも鉄塔の移設が遅れ、
第８図Ｂのように、他の切り取られた地盤３より
も鉄塔２付近の地盤だけが小高い丘４のように残
される。ところが鉄塔の移設には用地買収を要
し、経費と時間が嵩む。この対策として丘４を削
り、新地盤３上に鉄塔建替工事を行つている。そ
の手順は、第８図Ｃのように既設鉄塔２の横に鉄
塔５を仮設し、一次的に停電させた後旧鉄塔２か
ら新鉄塔５へ移線し、Ｄのように旧鉄塔２を解体
し、次にＥのように地盤カツトにより丘４を除
き、丘４のあつた位置にＦのように新鉄塔６を構
築して再び停電状態で鉄塔５から移線し、次に仮
鉄塔５を解体しているＧ。ところがこの場合も線
路の一次的停電に伴う複雑な調整と、仮鉄塔５を
設けるための煩しい用地業務が避けられない。(Prior Art) When there is an existing steel tower 2 on a hill 1 as shown in FIG. 8A, the old steel tower route often has to be relocated due to recent housing development or land improvement. However, the relocation of the steel tower was delayed compared to the land preparation.
As shown in FIG. 8B, only the ground near the steel tower 2 is left as a slightly elevated hill 4 compared to the other ground 3 that has been cut out. However, relocating the tower requires land acquisition, which increases costs and time. As a countermeasure, Hill 4 has been removed and the steel tower is being rebuilt on new ground 3. The procedure is to temporarily install a steel tower 5 next to the existing steel tower 2 as shown in Figure 8C, temporarily cut off the power, then transfer the line from the old steel tower 2 to the new tower 5, and then move the old steel tower 2 to the new tower 5 as shown in D. Demolish it, then remove hill 4 by cutting the ground as shown in E, build a new tower 6 at the location of hill 4 as shown in F, transfer the line from tower 5 again under power outage, and then install a temporary tower. G dismantling 5. However, in this case as well, complicated adjustments due to a temporary power outage on the line and troublesome land work for installing the temporary tower 5 are unavoidable.
（発明の目的）
本発明は既設送電線を仮工事することなく、ま
た既設鉄塔をそのまま使用した状態で旧地盤から
新地盤へ継脚できるようにすることを目的として
いる。(Objective of the Invention) The object of the present invention is to enable the legs to be connected from the old ground to the new ground without performing temporary construction on the existing power transmission line and while using the existing steel tower as it is.
（発明の構成）
本発明は旧鉄塔の下方に深礎掘削を行ない、そ
こに旧基礎より上方へ突出した鉄筋コンクリート
の杭を設け、杭の上端に台部を配筋しかつ旧塔脚
にアンカー加工を施して台部に巻込むようにコン
クリートを打設し、引続き旧基礎の徹去を含めて
新地盤まで切土徹去する既設鉄塔の継脚工法であ
る。(Structure of the Invention) The present invention involves excavating a deep foundation below the old steel tower, installing reinforced concrete piles that protrude upwards from the old foundation, reinforcing the base at the top of the pile, and anchoring it to the legs of the old tower. This is a method of connecting the legs of an existing steel tower, in which concrete is placed so that it wraps around the base of the tower, and then the old foundation is removed and the earth is cut and removed to the new ground.
（実施例）
第１図は１本のコンクリート杭１１を使用する
例、第２図は複数本のコンクリート杭１２を使用
する例を示している。まず第１図Ａに示すよう
に、丘綾１上に鉄塔２が設けられていて、鉄塔２
の周辺が宅地造成等により削られて鉄塔２がＢの
ように小高い丘４上に取り残された場合、Ｃのよ
うに既設鉄塔２にコンクリート杭１１を接続した
後、杭１１の周囲の丘４を切り取り、将来の地盤
３上に新しい鉄塔６を形成している。新鉄塔６の
上半部は旧鉄塔２でできており、旧鉄塔２の位置
には全く変更がない。(Example) FIG. 1 shows an example in which one concrete pile 11 is used, and FIG. 2 shows an example in which a plurality of concrete piles 12 are used. First, as shown in Figure 1A, a steel tower 2 is installed on top of the hill 1.
If the area around the steel tower 2 is removed due to construction of a residential area and the steel tower 2 is left on a small hill 4 as shown in B, after connecting the concrete pile 11 to the existing steel tower 2 as shown in C, the hill 4 around the pile 11 is removed. is cut out and a new steel tower 6 is formed on the future ground 3. The upper half of the new steel tower 6 is made up of the old steel tower 2, and the position of the old steel tower 2 has not changed at all.
第１図の新工法の詳細を第３図以下に示す。第
３図、第４図は深礎掘削工程を示しており、旧鉄
塔２の塔脚２ａと旧基礎１６で囲まれた区域の中
央部に土留材例えば鋼矢板１５を使用して穴１７
が掘削され、穴１７の下端部分１８に拡底掘削が
施される。 Details of the new construction method shown in Figure 1 are shown in Figures 3 and below. Figures 3 and 4 show the deep foundation excavation process, in which a hole 17 is created using earth retaining material, such as steel sheet pile 15, in the center of the area surrounded by the pedestal 2a of the old steel tower 2 and the old foundation 16.
is excavated, and the bottom end portion 18 of the hole 17 is expanded.
第５図は配筋コンクリート工程を示しており、
穴内に杭１１の配筋とコンクリート打設を行う。
１２は杭１１の鉄筋である。 Figure 5 shows the reinforced concrete process.
Reinforce the piles 11 and place concrete in the hole.
12 is a reinforcing bar of the pile 11.
第６図は旧塔脚のアンカー加工と台部の配筋コ
ンクリート工程を示している。即ち杭１１の上端
部に突出した鉄筋１２を中心に、台部１３のため
の配筋が行われ、同時に旧塔脚２ａにアンカー１
４が加工され、アンカー１４が台部１３内に巻き
込まれるように台部１３にコンクリートを打設す
る。 Figure 6 shows the anchoring process for the old tower pedestal and the reinforcing concrete process for the base. That is, reinforcement for the platform 13 is placed around the reinforcing bars 12 protruding from the upper end of the pile 11, and at the same time anchors 1 are placed on the old tower pedestals 2a.
4 is processed, and concrete is poured into the base part 13 so that the anchor 14 is rolled into the base part 13.
第７図は旧基礎の徹去と切土工程を示してい
る。まず台部１３の配筋、コンクリート打設の
後、台部１３より上方の旧鉄塔２内に腹材改造を
施す。２２は改造材（腹材）である。次に旧基礎
１６の徹去を含めて、新地盤３まで切土を行ない
土を徹去する。切り取りレベルに応じて杭１１の
表面仕上げを施す。これにより新鉄塔６が得られ
る。新鉄塔６の上半部は、前述の如く旧鉄塔２で
形成されており、旧鉄塔２の位置には全く変更が
生じない。 Figure 7 shows the removal of the old foundation and the cutting process. First, after reinforcing the base part 13 and pouring concrete, the interior of the old steel tower 2 above the base part 13 is remodeled. 22 is a modified material (belly material). Next, including the removal of the old foundation 16, the earth is cut to the new ground 3 and the soil is removed. The surface of the pile 11 is finished according to the cutting level. As a result, a new steel tower 6 is obtained. The upper half of the new steel tower 6 is formed by the old steel tower 2 as described above, and the position of the old steel tower 2 will not change at all.
第２図のようにコンクリート杭１２を複数本設
ける場合も、第３図〜第７図と同様の工法を採用
することができる。 Even when a plurality of concrete piles 12 are provided as shown in FIG. 2, the same construction method as shown in FIGS. 3 to 7 can be employed.
（発明の効果）
本発明によると仮工事なしに旧鉄塔の塔脚を現
状のまま地中へ継脚して、新地盤上に新鉄塔を設
けることができ、旧鉄塔の横に移線用の仮鉄塔
等、大掛かりな仮設備を要することなく、又狭少
な工事範囲で、既鉄塔の元位置に、将来の地盤
（切り取り後）から見れば嵩上げされた新鉄塔を
構築し得る。このため複雑な停電の調整と、煩わ
しい用地業務が軽減されるメリツトがあり、工事
費の面も大幅に軽減する余地がある。これにより
仮工事（停電）なしの元位置建替が可能となる。(Effects of the Invention) According to the present invention, the legs of the old steel tower can be connected underground as they are without temporary construction, and a new steel tower can be installed on the new ground, and the new tower can be installed next to the old steel tower for transfer purposes. It is possible to construct a new steel tower, which will be raised from the future ground (after cutting), at the original location of the existing steel tower, without requiring large-scale temporary equipment such as a temporary steel tower, and within a narrow construction area. This has the advantage of reducing complex power outage adjustments and cumbersome land management work, and there is also room to significantly reduce construction costs. This makes it possible to rebuild at the original location without temporary construction (power outages).
第１図、第２図は本発明による新工法２種類を
示す正面略図、第３図〜第７図は第１図に示す新
工法の詳細図、第８図は従来工法を示す正面略図
である。２…旧鉄塔、２ａ…旧塔脚、３…新地
盤、１１…コンクリート杭、１３…台部、１４…
アンカー、１６…旧基礎。
Figures 1 and 2 are schematic front views showing two types of new construction methods according to the present invention, Figures 3 to 7 are detailed views of the new construction method shown in Figure 1, and Figure 8 is a schematic front view showing the conventional construction method. be. 2... Old steel tower, 2a... Old tower foot, 3... New ground, 11... Concrete pile, 13... Base, 14...
Anchor, 16...old foundation.
Claims (1)
基礎より上方へ突出した鉄筋コンクリートの杭を
設け、杭の上端に台部を配筋しかつ旧塔脚にアン
カー加工を施して台部に巻込むようにコンクリー
トを打設し、引続き旧基礎の徹去を含めて新地盤
まで切土徹去する既設鉄塔の継脚工法。1. We excavated a deep foundation below the old steel tower, installed reinforced concrete piles that protruded upwards from the old foundation, placed reinforcements on the tops of the piles, and anchored the old tower legs to attach them to the base. A method of connecting the legs of an existing steel tower, in which concrete is placed in a rolling manner, and then the old foundation is removed and the cutting is removed to the new ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3227785A JPS61191771A (en) | 1985-02-20 | 1985-02-20 | Leg connection construction method of existing iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3227785A JPS61191771A (en) | 1985-02-20 | 1985-02-20 | Leg connection construction method of existing iron tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61191771A JPS61191771A (en) | 1986-08-26 |
| JPH0421792B2 true JPH0421792B2 (en) | 1992-04-13 |
Family
ID=12354481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3227785A Granted JPS61191771A (en) | 1985-02-20 | 1985-02-20 | Leg connection construction method of existing iron tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61191771A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1985
- 1985-02-20 JP JP3227785A patent/JPS61191771A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61191771A (en) | 1986-08-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |