JPS61216979A - Construction of utility pole - Google Patents
Construction of utility poleInfo
- Publication number
- JPS61216979A JPS61216979A JP5750985A JP5750985A JPS61216979A JP S61216979 A JPS61216979 A JP S61216979A JP 5750985 A JP5750985 A JP 5750985A JP 5750985 A JP5750985 A JP 5750985A JP S61216979 A JPS61216979 A JP S61216979A
- Authority
- JP
- Japan
- Prior art keywords
- utility pole
- pole
- excavated
- hole
- utility
- 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.)
- Granted
Links
Landscapes
- Foundations (AREA)
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電柱の地盤による支持力を高めるようにする
電柱の建設方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of constructing a utility pole that increases the support capacity of the utility pole by the ground.
（従来の技術）
端末になる電柱、電線やケーブルの曲がり角に建てる電
柱等、吊架する電線、ケーブル等による荷重が一方側に
かかる電柱を建てる際、普通のように掘削した穴に電柱
を建て入れた後、掘削穴と電柱との空隙を掘削土を用い
て突き固めて埋め戻すようにするだけでは、地盤による
電柱の支持力が不足する場合には、従来、第５図および
第６図に例示するように、電柱１に根かせブロック４を
固定することにより地盤による電柱の支持力の増大を計
っている。このような根かせブロック４を取りつけた電
柱を建てるには、建柱のだめの穴２を掘削し、その穴２
に電柱１を建て入れた後、掘削穴２の内壁と電柱１との
間に埋め戻し材３を地表より若干下部まで埋め戻し、電
柱１にかかる荷重方向側で根かせブロック４を埋めるだ
めの溝６を掘り、その溝６に根かせブロック４を入れ、
この根かせブロック４と電柱１とを根かせバンド５によ
り固定し、建柱用穴２の残りの部分および根かせブロッ
ク４と溝６との間の空所に更に埋め戻し材３を埋め戻す
ようにしていた。(Conventional technology) When constructing utility poles that serve as terminals, utility poles that are erected at the bends of electrical wires and cables, and utility poles where the load of suspended electrical wires and cables is placed on one side, the utility poles are erected in holes that have been excavated as usual. If the supporting capacity of the utility pole by the ground is insufficient simply by tamping and backfilling the gap between the excavated hole and the utility pole with the excavated soil, conventionally, the method shown in Figures 5 and 6 is used. As illustrated in FIG. 1, by fixing the root block 4 to the utility pole 1, the supporting force of the utility pole by the ground is increased. To erect a telephone pole with such a netekase block 4 attached, dig a hole 2 for the pole, and
After erecting the utility pole 1, fill in the backfilling material 3 between the inner wall of the excavated hole 2 and the utility pole 1 to a point slightly below the ground surface, and fill in the root block 4 on the side in the direction of the load applied to the utility pole 1. Dig a groove 6, insert the rooting block 4 into the groove 6,
This nekase block 4 and utility pole 1 are fixed with a nekase band 5, and the remaining part of the pole hole 2 and the space between the nekase block 4 and the groove 6 are further backfilled with backfilling material 3. That's what I was doing.
（発明が解決しようとする問題点）
このような根かせブロック４を設置する方法では、電柱
周辺の地盤を必要以上に掘削するため、原地盤が乱され
て弱くなシ、地盤による電柱の支持方の向上効果があま
シ期待できなかった。また電柱撤去時には、根かせブロ
ック４の埋設されている周辺部分も掘削してこれを露出
させ、バンド５を外して電柱１との固定を解除してから
でないと電柱１の撤去ができなく、作業性が悪いという
問題点があった。(Problems to be Solved by the Invention) In this method of installing nekase blocks 4, the ground around the utility poles is excavated more than necessary, which disturbs the original ground and weakens it. However, I could not expect much improvement. In addition, when removing a utility pole, the surrounding area where the netekase block 4 is buried must be excavated to expose it, and the band 5 must be removed to release the fixation from the utility pole 1 before the utility pole 1 can be removed. There was a problem that workability was poor.
ところで、建設した電柱頭部に水平張力を加えたときの
電柱根太れ部が受ける土庄分布を測定した結果によれば
、第４図に示すように、電柱の根入れ部の底部付近と地
際部付近に大きな抵抗土圧が発生している。By the way, according to the results of measuring the distribution of soil applied to the thickened part of a utility pole when horizontal tension is applied to the head of a constructed utility pole, as shown in Figure 4, it is found that A large resistive earth pressure is occurring near the area.
本発明は上記の点にかんがみ、電柱自体を建て入れる丸
穴を掘削するだけでよく、電柱撤去の際の作業も容易で
、上記のように大きな土圧の生ずる部分の地盤による支
持力を有効に増大し得るようにした電柱建設方法を提供
するものである。In view of the above points, the present invention makes it easy to remove the utility pole by simply excavating a round hole into which the utility pole itself is erected, and effectively utilizes the supporting capacity of the ground in areas where large earth pressure occurs as described above. The present invention provides a method of constructing utility poles that allows the number of utility poles to be increased.
（問題点を解決するだめの手段）
本発明は、丸穴状掘削穴に電柱を建て入れた後、電柱と
掘削穴内壁との間の空隙を埋戻し材により突き固め埋戻
す際に、電柱に加わる荷重方向と反対側の掘削穴下部付
近および電柱に加わる荷重方向側の掘削式地際下部付近
にそれぞれ電柱径よシ大径の半円筒体を設置するように
するものである。(Means for Solving the Problem) The present invention provides a method for erecting a utility pole into a round excavated hole, and then tamping and backfilling the gap between the utility pole and the inner wall of the excavated hole with a backfilling material. A semi-cylindrical body with a diameter larger than that of the utility pole is installed near the bottom of the excavation hole on the opposite side to the direction of the load applied to the utility pole, and near the bottom of the excavated ground on the side in the direction of the load applied to the utility pole.
（実施例）
第１図および第２図は本発明方法によシミ柱を建設した
一例の状態を示し、１は電柱、２は丸穴状の掘削穴、６
は埋戻し材、８は電柱１の径より大径で掘削式底部付近
を占める長さの半円筒体、９は同様に電柱１の径より大
径で掘削穴の地際下部付近を占める長さの半円筒体であ
シ、これら半円筒体８．９は図示例では掘削穴とほぼ同
じ径である。(Example) Figures 1 and 2 show an example of a stain pole constructed by the method of the present invention, in which 1 is a utility pole, 2 is a round excavated hole, and 6 is a pole.
8 is a backfilling material, 8 is a semi-cylindrical body with a length larger than the diameter of utility pole 1 and occupying the vicinity of the bottom of the excavation type, and 9 is a length similarly larger than the diameter of utility pole 1 and occupying the vicinity of the lower part of the excavated hole. These semi-cylindrical bodies 8.9, in the illustrated example, have approximately the same diameter as the borehole.
先づ所要の根入れ深さまで掘削した穴２の中央に電柱を
建て入れる。その後掘削穴２の最下部で友
荷重方向と反対側の電柱１と掘削穴２内壁との東隙に硬
質材料よりなる半円筒体８を設置し、電柱１と半円筒体
８および掘削穴２内壁との空隙を埋戻し材６により突き
固め埋戻しを行ない、半円筒体８の上部まで埋戻した後
、電柱１と掘削穴内壁との空隙を埋め戻してゆき、地際
からその下部付近に入れる半円筒体９の下部位置まで埋
戻した後、荷重方向側の電柱１と掘削穴２内壁との空隙
に硬質材料よりなる半円筒体９を設置し、掘削穴２内の
空隙を埋戻し材３により突き固め埋戻す。First, a telephone pole is erected in the center of hole 2, which has been excavated to the required depth. After that, a semi-cylindrical body 8 made of a hard material is installed in the east gap between the utility pole 1 and the inner wall of the excavated hole 2 on the opposite side of the load direction at the bottom of the excavated hole 2, and The gap between the utility pole 1 and the inner wall of the excavated hole is tamped and backfilled with the backfilling material 6, and the gap between the utility pole 1 and the inner wall of the excavated hole is backfilled. After backfilling to the lower part of the semi-cylindrical body 9 to be inserted into the excavated hole 2, the semi-cylindrical body 9 made of a hard material is installed in the gap between the utility pole 1 on the load direction side and the inner wall of the excavated hole 2, and the gap in the excavated hole 2 is filled. Compact and backfill with backing material 3.
（作 用）
半円筒体８，９は電柱１と一体的になり、電柱径が太く
なったと同等の地盤による支持力が得られる。(Function) The semi-cylindrical bodies 8 and 9 are integrated with the telephone pole 1, and the support force from the ground equivalent to that of a telephone pole with a thicker diameter can be obtained.
第五図は、建設した電柱頭部に水平張力を加えたときの
電柱が傾く角度との関係を電柱の曲げモーメントと電柱
地際部傾斜角とで表わした測定結果を示し、曲線Ａは電
柱のみを掘削穴に建て入れて掘削土により埋戻した場合
、曲線日は根かせブロック４を電柱１に取り付け、掘削
土で埋め戻した場合、曲線Ｃは根かせブロック４を電柱
１に取シ付け、粒度調整砕石で埋め戻した場合、曲線り
は本発明を用いた場合で、掘削穴径に等しい外径となし
た半円筒体８．９を使用し、粒度調整砕石で埋め戻した
場合である。この図より明らかのように本発明方法を用
いた場合、従来の方法による場合より、同じ曲げモーメ
ントの場合、電柱の傾く角度は小さくなる。すなわち本
発明方法によれば、地盤による支持力が従来方法による
よりも向上していることが解る。Figure 5 shows the measurement results of the relationship between the bending moment of the utility pole and the angle of inclination of the utility pole's ground section when horizontal tension is applied to the head of the utility pole. In the case where only the ground is placed in the excavated hole and backfilled with excavated soil, the curve C is the case where the netted block 4 is attached to the utility pole 1 and the backfilled with excavated soil. In the case where the present invention is used, a semi-cylindrical body 8.9 with an outer diameter equal to the diameter of the excavation hole is used, and the backfill is performed with particle size-adjusted crushed stone. It is. As is clear from this figure, when the method of the present invention is used, the angle of inclination of the utility pole is smaller than when the conventional method is used for the same bending moment. That is, it can be seen that according to the method of the present invention, the supporting force by the ground is improved compared to the conventional method.
（発明の効果）
以上のように本発明によれば、電柱に加わる荷重方向の
掘削式地際下部付近と、荷重方向の反対側の掘削穴の底
部付近の、圧力のほとんどが作用する部分に半円筒体を
設置することによシ、これらの半円筒体を介して力が地
盤に伝わることになり、そして半円筒体の受圧面積が同
位置の電柱の受圧面積よシ大きいことから、従来の方法
による場合に比し、効率的に地盤による電柱の支持力が
増加する。しかも掘削面積が従来の根かせブロックを用
いる場合に比して少なくてすむと共に半円筒体が電柱に
固定されていないことより電柱撤去時の抜柱作業が容易
となる。(Effects of the Invention) As described above, according to the present invention, most of the pressure is applied to the area near the bottom of the excavated ground in the direction of the load applied to the utility pole and near the bottom of the excavation hole on the opposite side of the load direction. By installing semi-cylindrical bodies, the force will be transmitted to the ground through these semi-cylindrical bodies, and the pressure receiving area of the semi-cylindrical bodies is larger than the pressure receiving area of the utility pole at the same location, so Compared to the case using the above method, the supporting capacity of the utility pole by the ground is increased more efficiently. In addition, the excavation area is smaller than when using a conventional root block, and since the semi-cylindrical body is not fixed to the utility pole, it is easier to remove the pole when removing it.
第１図は本発明方法により電柱を建設した一例の状態を
示す側面図、第２図は同平面図、第３図は建設した電柱
頭部に水平荷重を加えた場合の電柱根太れ部の受ける土
圧分布の測定結果を示す曲線図、第４図は従来方法と本
発明方法によってそれぞれ建設した電柱の頭部に水平張
力を加えた各場合の曲げモーメントと電柱地際部類斜角
度との関係を示す曲線図、第５図は根かせを用いた従来
方法により電柱を建設した状態を示す側面図、第６図は
同平面図である。
１・・・電柱、２・・・丸穴状掘削穴、３・・・埋戻し
材、８．９・・・半円筒体
キ１図
Ｆ−２目
半４６
１３困
半５＠
ｖ−６困Fig. 1 is a side view showing an example of a utility pole constructed using the method of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a diagram of the thick part of the utility pole when a horizontal load is applied to the head of the constructed utility pole. Figure 4 is a curve diagram showing the measurement results of the earth pressure distribution. Figure 4 shows the bending moment and the slope angle of the utility pole in each case when horizontal tension is applied to the head of the utility pole constructed by the conventional method and the method of the present invention. A curve diagram showing the relationship, FIG. 5 is a side view showing a state in which a utility pole is constructed by the conventional method using a net anchor, and FIG. 6 is a plan view of the same. 1... Utility pole, 2... Round excavated hole, 3... Backfilling material, 8.9... Semi-cylindrical body Ki 1 Fig. F-2 Eyes and a half 46 13 Half-and-a-half 5 @ v-6 trouble
Claims (1)
との間の空隙を埋戻し材により突き固め埋戻す際に、電
柱に加わる荷重方向と反対側の掘削穴下部付近および電
柱に加わる荷重方向側の掘削穴の地際下部付近にそれぞ
れ電柱径より大径の半円筒体を設置することを特徴とす
る電柱建設方法。After a utility pole is erected in a round excavated hole, the gap between the utility pole and the inner wall of the excavation hole is tamped and backfilled with backfilling material. A utility pole construction method characterized by installing semi-cylindrical bodies each having a diameter larger than the diameter of the utility pole near the bottom of the ground in the excavated hole on the side in the direction of the load applied to the utility pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5750985A JPS61216979A (en) | 1985-03-20 | 1985-03-20 | Construction of utility pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5750985A JPS61216979A (en) | 1985-03-20 | 1985-03-20 | Construction of utility pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61216979A true JPS61216979A (en) | 1986-09-26 |
| JPH029152B2 JPH029152B2 (en) | 1990-02-28 |
Family
ID=13057703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5750985A Granted JPS61216979A (en) | 1985-03-20 | 1985-03-20 | Construction of utility pole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61216979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017043981A (en) * | 2015-08-27 | 2017-03-02 | 鹿島建設株式会社 | Movement method of work floor in vertical shaft or inclined shaft and lining construction method |
-
1985
- 1985-03-20 JP JP5750985A patent/JPS61216979A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017043981A (en) * | 2015-08-27 | 2017-03-02 | 鹿島建設株式会社 | Movement method of work floor in vertical shaft or inclined shaft and lining construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH029152B2 (en) | 1990-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |