JPH0122440B2 - - Google Patents
Info
- Publication number
- JPH0122440B2 JPH0122440B2 JP60110121A JP11012185A JPH0122440B2 JP H0122440 B2 JPH0122440 B2 JP H0122440B2 JP 60110121 A JP60110121 A JP 60110121A JP 11012185 A JP11012185 A JP 11012185A JP H0122440 B2 JPH0122440 B2 JP H0122440B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- casing
- propulsion device
- propulsion
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、主に下水道用の管渠の他、電力、通
信、上水道およびガス等の各種事業用に使用され
る管渠を形成するために地中に鋼管を打設するの
に実施される空気衝撃式推進機（例えば商品名グ
ルンドラム）を利用した小口径（約800mm以下）
の鋼管の打撃推進工法の改良に関するものであ
る。[Detailed Description of the Invention] (Industrial Application Field) The present invention is mainly used for forming pipes used for various businesses such as electricity, communications, waterworks, and gas, in addition to sewerage pipes. Small diameter (approximately 800 mm or less) using an air impact propulsion machine (for example, product name Grundrum) used to drive steel pipes underground.
This paper relates to the improvement of the percussion propulsion method for steel pipes.
（従来の技術）
第１０図は空気衝撃式推進機を利用した従来の
鋼管打撃推進工法の推進準備完了の状態を示すも
のである。図中１は鋼管を打設しようとする地
盤、２は鋼管打撃推進工法を実施するために地盤
１に設けた立坑、３は立坑２の底面上に設置した
ベースフレーム、４はベースフレーム３上に突設
した架台、５はこれらの架台４の上端部に枢支し
たＶ型ローラ、６はＶ型ローラ５上に横置した打
設用の鋼管、７は鋼管６の先端部に固着したリン
グ状の先端シユー、８は鋼管６の後端部に嵌着し
たラミングコーン、９は空気衝撃式推進機で、後
半のＶ型ローラ５上に載置され、その先端部は前
記ラミングコーン８に嵌入している。(Prior Art) FIG. 10 shows a state in which preparation for propulsion is completed in the conventional steel pipe percussion propulsion method using an air-impact propulsion device. In the figure, 1 is the ground where the steel pipe will be driven, 2 is the shaft installed in the ground 1 to implement the steel pipe percussion propulsion method, 3 is the base frame installed on the bottom of the shaft 2, and 4 is the top of the base frame 3 5 is a V-shaped roller pivotally supported on the upper end of these mounts 4, 6 is a steel pipe for pouring placed horizontally on the V-shaped roller 5, and 7 is fixed to the tip of the steel pipe 6. A ring-shaped tip shoe, 8 is a ramming cone fitted to the rear end of the steel pipe 6, and 9 is an air impact type propulsion device, which is placed on the V-shaped roller 5 in the latter half, and the tip thereof is attached to the ramming cone 8. It is embedded in
また１０は鋼管６と空気衝撃式推進機９とを連
結するテンシヨンチエン（例えばレバーブロツ
ク）、１１は地盤１上に設置したコンプレツサー、
１２はコンプレツサー１１と空気衝撃式推進機９
とを接続するエアホース、１３はルブリケータ
ー、１４はエアバルブである。 Also, 10 is a tension chain (for example, a lever block) that connects the steel pipe 6 and the air impact propulsion device 9, 11 is a compressor installed on the ground 1,
12 is compressor 11 and air impulse propulsion machine 9
13 is a lubricator, and 14 is an air valve.
この第１０図に示す装置によつて、コンプレツ
サー１１から圧縮空気を空気衝撃式推進機９内に
送り込むことによつて、推進機９内のピストン
（図示せず）を往復動させることにより、そのピ
ストンによつて推進機９のヘツド部を打撃して、
その衝撃力をラミングコーン８を介して鋼管６に
伝えることにより鋼管６を地盤１中に打ちこんで
いた。 With the device shown in FIG. 10, compressed air is sent from the compressor 11 into the air impulse type propulsion device 9, thereby causing a piston (not shown) in the propulsion device 9 to reciprocate. Hitting the head of the propulsion device 9 with the piston,
The steel pipe 6 was driven into the ground 1 by transmitting the impact force to the steel pipe 6 via the ramming cone 8.
（発明が解決しようとする問題点）
しかしながら第１０図に示す従来の方法では、
立坑２内に鋼管６と、空気衝撃式推進機９とを直
列に配置しなければならないため、立坑２の長さ
Ｌ（第１０図参照）が、鋼管６と推進機９との接
続長より大きくなければ実施できないという問題
点があつた。(Problems to be solved by the invention) However, in the conventional method shown in FIG.
Since the steel pipe 6 and the air impact type propulsion device 9 must be arranged in series in the shaft 2, the length L of the shaft 2 (see Figure 10) is longer than the connection length between the steel pipe 6 and the propulsion device 9. The problem was that it could not be implemented unless it was large enough.
（問題点を解決するための手段）
上述の問題点を解決するため本発明において
は、空気衝撃式推進機を挿入し得る中空円筒状ケ
ーシング内に前記推進機の円錐状先端部と嵌合す
る推力支承部を設けると共に、このケーシングの
後部外側に鍔状の推力伝達部を設け、空気衝撃式
推進機を挿入した前記ケーシングを地中に打設し
ようとする鋼管内に挿入した状態で立坑内にセツ
トして空気衝撃式推進機を作動させることにより
鋼管を地中に打設する。(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, the conical tip of the air impact type propulsion device is fitted into a hollow cylindrical casing into which the air impact type propulsion device can be inserted. In addition to providing a thrust bearing part, a flange-like thrust transmission part is provided on the outside of the rear part of the casing, and the casing, into which the air impact type propulsion machine is inserted, is inserted into a steel pipe that is to be driven into the ground. The steel pipe is driven into the ground by setting it to 1 and operating the air impulse propulsion machine.
（作用）
上述のように本発明によれば、地盤に打ち込む
鋼管内に空気衝撃式推進機を挿入した状態で立坑
内にセツトするようにしたから、立坑の必要長さ
を従来工法によつて必要とした長さの約1/2に短
縮することができる。したがつて立坑の工事費を
著しく軽減できる上に、従来工法によつては物理
的に不可能であつた挾い場所においても、本発明
工法によれば施工が可能になる。(Function) As described above, according to the present invention, the air impact type propulsion machine is inserted into the steel pipe that is driven into the ground and is set in the shaft, so that the required length of the shaft can be determined by the conventional construction method. It can be shortened to about 1/2 of the required length. Therefore, the cost of constructing a shaft can be significantly reduced, and the construction method of the present invention enables construction even in confined spaces that were physically impossible using conventional construction methods.
（実施例）
以下、第１図〜第９図について本発明の一実施
例を説明する。図中前記符号と同一の符号は同等
のものを示す。(Example) An example of the present invention will be described below with reference to FIGS. 1 to 9. In the figure, the same reference numerals as the above-mentioned reference numerals indicate equivalent parts.
まず第７図に示すように、空気衝撃式推進機９
を挿入し得る中空円筒状ケーシング１５内の前部
に推進機９の推力支承部１６として、推進機９の
円錐状先端部９ａ（第８図参照）を嵌合する推力
支承リング１６ａを溶接等により固着する。１６
ｂはこのリング１６ａの補強リブである。 First, as shown in Fig. 7, the air impulse propulsion machine 9
As the thrust bearing part 16 of the propulsion device 9, a thrust bearing ring 16a into which the conical tip 9a (see FIG. 8) of the propulsion device 9 is fitted is attached by welding or the like to the front part of the hollow cylindrical casing 15 into which the propulsion device 9 can be inserted. It sticks to the surface. 16
b is a reinforcing rib of this ring 16a.
またケーシング１５の後部外側に、推進機９の
推力伝達部１７として、推力伝達リング１７ａを
溶接等により固着すると共に、補強リブ１７ｂに
よつて補強する。１８は必要に応じて推力伝達部
１７の前側のケーシング１５の外周に着脱自在に
嵌合する鍔で、この鍔１８には前記鋼管６の後端
縁を嵌合するインロー状の段部１８ａが形成され
ている。 Further, a thrust transmission ring 17a is fixed to the rear outer side of the casing 15 as the thrust transmission section 17 of the propulsion device 9 by welding or the like, and is reinforced by reinforcing ribs 17b. Reference numeral 18 denotes a collar that is removably fitted to the outer periphery of the casing 15 on the front side of the thrust transmitting section 17 as required, and this collar 18 has a spigot-like stepped portion 18a that fits the rear end edge of the steel pipe 6. It is formed.
第８図は第７図のように形成したケーシング１
５内に空気衝撃式推進機９を挿入した状態を示す
もので、第９図は第８図のケーシング１５をさら
に鋼管６内に挿入した状態を示す平断面図であ
る。なお１９はケーシング１５を鋼管６の中心に
保持するための支持部材であり、例えば中空形状
の円板をケーシング１５に仮止めしたものでもよ
い。 Figure 8 shows the casing 1 formed as shown in Figure 7.
9 is a plan sectional view showing a state in which the casing 15 of FIG. 8 is further inserted into the steel pipe 6. FIG. Note that 19 is a support member for holding the casing 15 at the center of the steel pipe 6, and for example, a hollow disc may be temporarily fixed to the casing 15.
第１図〜第４図は本発明工法の工程説明図で、
第９図に示すように、鋼管６内にケーシング１５
を介して空気衝撃式推進機９を挿入したものを、
第１図に示すように地盤１の立坑２内にセツト
し、コンプレツサー１１により圧縮空気を空気衝
撃式推進機９に送給して推進機９を作動させる。 Figures 1 to 4 are process explanatory diagrams of the method of the present invention.
As shown in FIG. 9, a casing 15 is placed inside the steel pipe 6.
The air shock propulsion device 9 is inserted through the
As shown in FIG. 1, it is set in a shaft 2 in the ground 1, and a compressor 11 supplies compressed air to an air impact type propulsion device 9 to operate the propulsion device 9.
このようにすると推進機９に発生した推力が推
進機９の先端部９ａ及び推力支承部１６を介して
ケーシング１５に伝わり、さらに推力伝達部１７
および鍔１８を介して鋼管６に伝わる。このため
鋼管６は第２図に示すように地中に打ち込まれ
る。そして最初の鋼管６1が第３図に示すように、
その大部分が地盤１中に入つたならば、第９図に
示すテンシヨンチエン１０をゆるめてから、空気
衝撃式推進機９およびケーシング１５を鋼管６1
内から取り出してケーシング１５内の排土を行
う。この排土は特殊スコツプまたはジエツト水等
で行うとよい。つぎに２番目の鋼管６2中に前述
したように、ケーシング１５を介して推進機９を
装備したものを立坑２内にセツトし、この鋼管６
２の前端と最初の鋼管６1の後端とを第５図に示す
ように溶接２０により結合する。２１（第６図参
照）は前記溶接部を補強するため、円周上の４ケ
所に配置して溶接した補強用鋼片である。 In this way, the thrust generated in the propulsion device 9 is transmitted to the casing 15 via the tip portion 9a of the propulsion device 9 and the thrust bearing portion 16, and further the thrust force transmission portion 17
and is transmitted to the steel pipe 6 via the collar 18. For this purpose, the steel pipe 6 is driven into the ground as shown in FIG. Then, the first steel pipe 61 is as shown in Fig. 3.
Once most of it has entered the ground 1, loosen the tension chain 10 shown in FIG.
The soil inside the casing 15 is removed by taking it out from inside. It is best to remove this soil using a special scoop or jet water. Next, as described above, the second steel pipe 62 equipped with the propulsion device 9 is set in the shaft 2 through the casing 15.
The front end of the first steel pipe 61 and the rear end of the first steel pipe 61 are connected by welding 20 as shown in FIG. Reference numeral 21 (see FIG. 6) indicates reinforcing steel pieces welded at four locations on the circumference in order to reinforce the welded portion.
上述した作業を繰り返し行つて、第４図に示す
うよに、地盤１中に打ち込んだ鋼管６の先端が到
達坑２２に達したならば、ジエツト水またはオー
ガー等を使用して鋼管６内の排土を行えばよい。 By repeating the above-mentioned operations, when the tip of the steel pipe 6 driven into the ground 1 reaches the reaching hole 22 as shown in Fig. 4, the inside of the steel pipe 6 is drained using jet water or an auger. All you have to do is remove the soil.
（発明の効果）
上述のように本発明によれば、地盤１に打ち込
む鋼管６内に空気衝撃式推進機９を挿入した状態
で立坑２内にセツトするようにしたから、立坑２
の必要長さｌ（第１図参照）を従来工法につて必
要とした長さＬ（第１０図参照）の約1/2に短縮す
ることができる。したがつて本発明によれば、立
坑の工事費を著しく軽減できる上に、従来工法に
よつては物理的に不可能であつた狭い場所におい
ても本発明工法によれば、施工が可能になるか
ら、例えば小さなライナープレート、またはマン
ホール内での作業も可能になるため、本発明は鋼
管の打撃推進工法の利用範囲を著しく拡張できる
というすぐれた効果がある。(Effects of the Invention) As described above, according to the present invention, the air impact propulsion device 9 is inserted into the steel pipe 6 that is driven into the ground 1 and is set in the shaft 2.
The required length l (see Fig. 1) can be reduced to approximately 1/2 of the length L (see Fig. 10) required in the conventional construction method. Therefore, according to the present invention, not only can construction costs for shafts be significantly reduced, but also construction can be performed in narrow spaces that were physically impossible using conventional construction methods. This makes it possible to work, for example, on small liner plates or inside manholes, so the present invention has the excellent effect of significantly expanding the scope of application of the percussion propulsion method for steel pipes.
第１図〜第４図は本発明工法の工程説明用の立
断面図、第５図は鋼管の溶接部の断面図、第６図
は溶接した鋼管の全周図、第７図は本発明工法で
使用するケーシングの縦断面図、第８図は第７図
のケーシングに空気衝撃式推進機を挿入した状態
を示す縦断面図、第９図は第８図のケーシングを
鋼管内に挿入した状態を示す縦断面図、第１０図
は従来の鋼管打撃推進工法の推進準備完了状態を
示す立面図である。
１……地盤、２……立坑、３……ベースフレー
ム、４……架台、５……Ｖ型ローラ、６……鋼
管、７……先端シユー、８……ラミングコーン、
９……空気衝撃式推進機、１０……テンシヨンチ
エン（レバーブロツク）、１１……コンプレツサ
ー、１２……エアホース、１３……ルブリケータ
ー、１４……エアバルブ、１５……ケーシング、
１６……推力支承部、１７……推力伝達部、１８
……鍔、１９……支持部材、２２……到達坑。
Figures 1 to 4 are vertical cross-sectional views for explaining the process of the method of the present invention, Figure 5 is a cross-sectional view of the welded part of the steel pipe, Figure 6 is a full circumference view of the welded steel pipe, and Figure 7 is the method according to the present invention. A vertical cross-sectional view of the casing used in the construction method. Figure 8 is a vertical cross-sectional view showing the air impact propulsion machine inserted into the casing shown in Figure 7. Figure 9 is a vertical cross-sectional view showing the casing shown in Figure 8 inserted into a steel pipe. FIG. 10 is a vertical cross-sectional view showing the state, and an elevational view showing the state in which preparation for propulsion is completed in the conventional steel pipe percussion propulsion method. 1... Ground, 2... Vertical shaft, 3... Base frame, 4... Frame, 5... V-shaped roller, 6... Steel pipe, 7... Tip shoe, 8... Ramming cone,
9... Air impact propulsion device, 10... Tension chain (lever block), 11... Compressor, 12... Air hose, 13... Lubricator, 14... Air valve, 15... Casing,
16... Thrust bearing part, 17... Thrust transmission part, 18
... Tsuba, 19... Support member, 22... Reaching hole.
Claims (1)
ーシング内に前記推進機の円錐状先端部と嵌合す
る推力支承部を設けると共に、このケーシングの
後部外側に鍔状の推力伝達部を設け、空気衝撃式
推進機を挿入した前記ケーシングを地中に打設し
ようとする鋼管内に挿入した状態で立坑内にセツ
トして空気衝撃式推進機を作動させることにより
鋼管を地中に打設することを特徴とする鋼管の打
撃推進工法。1. In a hollow cylindrical casing into which an air impact type propulsion device can be inserted, a thrust bearing portion that fits with the conical tip of the propulsion device is provided, and a flange-like thrust transmission portion is provided on the outside of the rear part of the casing, The casing with the air impact type propulsion machine inserted is inserted into the steel pipe to be driven into the ground, and the steel pipe is driven into the ground by setting it in a shaft and operating the air impact type propulsion machine. A percussion propulsion method for steel pipes characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11012185A JPS61270498A (en) | 1985-05-24 | 1985-05-24 | Method of striking propulsion construction of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11012185A JPS61270498A (en) | 1985-05-24 | 1985-05-24 | Method of striking propulsion construction of steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61270498A JPS61270498A (en) | 1986-11-29 |
| JPH0122440B2 true JPH0122440B2 (en) | 1989-04-26 |
Family
ID=14527562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11012185A Granted JPS61270498A (en) | 1985-05-24 | 1985-05-24 | Method of striking propulsion construction of steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61270498A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021156044A (en) * | 2020-03-27 | 2021-10-07 | 旭化成建材株式会社 | Installation device and installation method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674712B2 (en) * | 1986-07-18 | 1994-09-21 | 極東開発工業株式会社 | Pipe burying device |
| JPS6360397A (en) * | 1986-08-28 | 1988-03-16 | 極東開発工業株式会社 | Earth-moving device for burying piping |
| JPH0296088A (en) * | 1988-10-03 | 1990-04-06 | Osaka Bosui Constr Co Ltd | Direction correcting device for steel pipe to be impact-propelled in horizontal direction in ground |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2241695C3 (en) * | 1972-08-24 | 1978-06-01 | Gewerkschaft Eisenhuette Westfalia, 4670 Luenen | Pre-press device for pipe pre-press operation |
| JPS6037280B2 (en) * | 1980-07-04 | 1985-08-24 | インステイチユ−ト・ゴルノゴ・デラ・シビルスコゴ・オトデレニア・アカデミイ・ナウク・エスエスエスア−ル | Soil drilling method and device |
| JPS5811295A (en) * | 1981-07-10 | 1983-01-22 | インステイチユト・ゴルノゴ・デラ・シビルスコゴ・オトデレニア・アカデミイ・ナウク・エスエスエスア−ル | Pipe constructing method without drilling groove |
| JPS58153896A (en) * | 1982-03-05 | 1983-09-13 | 株式会社加賀田組 | Acceleration of advance of soft and weak pipe |
| JPS5922038A (en) * | 1982-07-28 | 1984-02-04 | Canon Inc | flash device |
| DE3228284C2 (en) * | 1982-07-29 | 1986-11-27 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Hold-down device for unfoldable functional elements |
-
1985
- 1985-05-24 JP JP11012185A patent/JPS61270498A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021156044A (en) * | 2020-03-27 | 2021-10-07 | 旭化成建材株式会社 | Installation device and installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61270498A (en) | 1986-11-29 |
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