JPH0396787A - Pipe for propulsive method - Google Patents
Pipe for propulsive methodInfo
- Publication number
- JPH0396787A JPH0396787A JP1234362A JP23436289A JPH0396787A JP H0396787 A JPH0396787 A JP H0396787A JP 1234362 A JP1234362 A JP 1234362A JP 23436289 A JP23436289 A JP 23436289A JP H0396787 A JPH0396787 A JP H0396787A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- pipe
- exterior
- steel plate
- facing
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 12
- 230000001141 propulsive effect Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 40
- 239000010959 steel Substances 0.000 abstract description 40
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 20
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は推進工法によって土中に敷設される推進工法用
管に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a propulsion method pipe that is laid in the ground by a propulsion method.
従来の技術
従来、下水管路などを土中に敷設するために用いられる
管として推進工法用管がある。これは、?6図に示すよ
うに、鋳鉄管lの外周に外装コンクリート2を施し、さ
らに外装コンクリート2の外周を鋼板3で覆ったもので
あった。そして、従来の推進工法用管は、鋼板3を筒状
に形成し、鋳鉄管1の周囲に複数の鋼板3を一部を重ね
るようにして鋳鉄管の全長にわたって配置した後に、鋼
板3と鋳鉄管1の間に外装コンクリート2を打設して形
成していた。BACKGROUND OF THE INVENTION Conventionally, there is a propulsion method pipe as a pipe used for laying sewage pipes and the like underground. this is,? As shown in FIG. 6, an exterior concrete 2 was applied to the outer periphery of a cast iron pipe 1, and the outer periphery of the exterior concrete 2 was further covered with a steel plate 3. In the conventional propulsion method pipe, the steel plate 3 is formed into a cylindrical shape, a plurality of steel plates 3 are arranged around the cast iron pipe 1 so as to partially overlap the entire length of the cast iron pipe, and then the steel plate 3 and the cast iron It was formed by pouring exterior concrete 2 between pipes 1.
発明が解決しようとする課題
しかし、上記した従来の構成においては、筒状に形成さ
れた鋼板3を鋳鉄管1の周囲に配置するときに、鋳鉄管
1の軸心方向における鋼板3どうしの位置合わせに手間
がかかる問題があった。また、土中に対する管の推進中
には、鋼板3と土との間の摩擦力F■が鋳鉄管1の軸心
方向に作用するので、この摩擦力F1が鋼板3と外装コ
ンクリート2の間の摩擦力F1を上回ると鋼板3が外装
コンクリート2の上において位置づれする問題があった
。Problems to be Solved by the Invention However, in the conventional configuration described above, when the cylindrical steel plates 3 are arranged around the cast iron pipe 1, the positions of the steel plates 3 in the axial direction of the cast iron pipe 1 are There was a problem that it took a lot of time to match. Furthermore, while the pipe is being propelled into the soil, a frictional force F■ between the steel plate 3 and the soil acts in the axial direction of the cast iron pipe 1. If the friction force exceeds F1, there is a problem in that the steel plate 3 shifts position on the exterior concrete 2.
本発明は上記課題を解決するもので、鋼板どうしの位置
合わせを容易に行うことができ、鋳鉄管の軸心方向にお
ける位置づれを防止することができる推進工法用管を提
供することを目的とする。The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a pipe for the propulsion method that allows easy alignment of steel plates and prevents misalignment in the axial direction of the cast iron pipe. do.
課題を解決するための手段
上記課題を解決するために本発明は、芯管の外周に外装
コンクリートを設け、外装コンクリートの外周を囲んで
複数の外装板を設けた推進工法用管において、芯管の受
口部外周に外装板を管軸心方向において係合する環状の
段部を設け、芯管の受口部側に配置される一側の外装板
を押目部側に配置される他側の外装板に内嵌して設け、
他側の外装板に一側の外装板の端部に係合する突部を設
けた構成としたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides a pipe for a propulsion method in which an exterior concrete is provided on the outer periphery of a core pipe, and a plurality of exterior plates are provided surrounding the outer periphery of the exterior concrete. An annular step is provided on the outer periphery of the socket of the core tube to engage the exterior plate in the tube axis direction, and one side of the exterior plate located on the socket side of the core tube and the other side located on the push-in part side are provided. Provided by fitting inside the exterior plate of
The exterior plate on the other side is provided with a protrusion that engages with the end of the exterior plate on one side.
作用
上記した構成により、外装コンクリートの打設に先だっ
て芯管の周囲に外装板を配置するときには、芯管の受口
部側に配置される一側の外装板を筒状に形成して芯管の
押口・部側から挿入配置し、芯管の受口部外周に設けた
段部で一側の外装板を管軸心方向において係止する。そ
して、芯管の押口都側に配置される他側の外装板を芯管
の挿口部側から押入し、他側の外装板に設けた突部によ
って一側の外装板の端部に他側の外装板を係止する。Effect With the above-mentioned configuration, when placing the exterior plate around the core pipe before pouring exterior concrete, one side of the exterior plate placed on the socket side of the core pipe is formed into a cylindrical shape. The outer plate on one side is locked in the direction of the tube axis by the stepped portion provided on the outer periphery of the socket portion of the core tube. Then, push the other side of the outer sheathing plate placed on the insertion port side of the core tube from the insertion part side of the core tube, and use the protrusion provided on the other side of the outer sheathing plate to attach the other side of the outer sheathing plate to the end of the one side of the outer sheathing plate. Lock the side exterior plate.
そして、この状態において外装板と芯管の間に外装コン
クリートを打設して推進工法用管を形成する。したがっ
て、鋼板どうしの位置合わせを容易に行うことができる
。Then, in this state, exterior concrete is placed between the exterior plate and the core pipe to form a pipe for the propulsion method. Therefore, the steel plates can be easily aligned with each other.
また、土中に対して推進中には、土と外装板との間に生
じる摩擦力が受口部の段部で受け止められ、外装コンク
リートに対する外装板の位置づれが防止される。Furthermore, while being propelled into the soil, the frictional force generated between the soil and the exterior plate is absorbed by the stepped portion of the socket, thereby preventing the exterior plate from shifting relative to the exterior concrete.
実施例
以下本発明の一実施例を図面に基づいて説明する。第1
図〜第5図において、芯管をなす鋳鉄管11は一端側が
受口部l2に形成されるとともに、他端側が押口部l3
に形成されている。そして、受口部12の外面周縁部に
は環状の段部l4が形成されており、鋳鉄管11の外周
には外装コンクリートl5が設けられている。また、外
装コンクリー}15の周囲には外装板をなす一対の鋼板
te, 17が外装コンクリートl5の周面を覆って設
けられている。この鋼板IG, 17は筒状をなしてお
り、受口部l2の側に配置れる一例の鋼板l6は挿口部
l3の側に配置される他側の鋼板l7よりも小径に形成
され、一側の鋼板16が他側の鋼板l7に内嵌して配置
されている。EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In FIGS. 5 to 5, a cast iron pipe 11 forming a core pipe has one end formed into a socket l2 and the other end formed into a push opening l3.
is formed. An annular stepped portion l4 is formed on the outer peripheral edge of the socket portion 12, and an exterior concrete l5 is provided on the outer periphery of the cast iron pipe 11. Further, around the exterior concrete 15, a pair of steel plates te, 17 forming exterior plates are provided to cover the circumferential surface of the exterior concrete l5. The steel plates IG, 17 have a cylindrical shape, and one steel plate l6 disposed on the side of the socket l2 is formed to have a smaller diameter than the steel plate l7 on the other side disposed on the side of the socket l3. The steel plate 16 on one side is disposed so as to fit inside the steel plate 17 on the other side.
そして、他側の鋼板l7には、打ち抜きによって半径方
向に突部l8が半径方向に形成されており、突部l8は
一側の鋼板!6の一端部に管軸心方向において係止され
ている。また、一側の鋼板16の他端部は受口部l2の
段部I4に管軸心方向にわいて係止されている。A protrusion l8 is formed in the radial direction on the steel plate l7 on the other side by punching, and the protrusion l8 is formed on the steel plate l7 on the one side! 6 in the tube axis direction. Further, the other end of the steel plate 16 on one side is locked to the stepped portion I4 of the socket portion l2 in the direction of the tube axis.
以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.
外装コンクリート15の打設に先だって鋳鉄管11の周
囲に鋼板16. 17を配置するときには、第2図〜第
3図に示すように、鋳鉄管11の受口部l2の側に配置
される一側の鋼板IGを鋳鉄管11の押口部13の側か
ら押入配置し、鋳鉄管11の受口部l2の外周に設けた
段部l4で一側の鋼板16を管軸心方向において係止す
る。そして、第4図〜第5図に示すように、鋳鉄管l!
の押口部l3の側に配置される他側の鋼板■7を鋳鉄管
11の挿口部!3の側から挿入し、他側の鋼板l7に設
けた突部l8によって一側の鋼板l6のZla部に他側
の鋼板l7を係止する。そして、この状態において、鋳
鉄管Ifと鋼板16. 17の間に外装コンクリー}1
5を打設して推進工法用管を形成する。したがって、突
部l8が係止されることにより鋼板IG, 17とうし
の管軸心方向における位置合わせを容易に行うことがで
きる。Prior to placing the exterior concrete 15, a steel plate 16. is placed around the cast iron pipe 11. 17, as shown in FIGS. 2 and 3, one steel plate IG placed on the side of the socket l2 of the cast iron pipe 11 is pushed in from the side of the opening 13 of the cast iron pipe 11. Then, the steel plate 16 on one side is locked in the tube axis direction by a stepped portion l4 provided on the outer periphery of the socket portion l2 of the cast iron pipe 11. Then, as shown in Figures 4 and 5, the cast iron pipe l!
The steel plate ■7 on the other side, which is placed on the side of the inlet l3, is the inlet of the cast iron pipe 11! 3 side, and the other side steel plate 17 is locked to the Zla part of the one side steel plate 16 by the protrusion l8 provided on the other side steel plate 17. In this state, the cast iron pipe If and the steel plate 16. Exterior concrete between 17}1
5 to form a pipe for the propulsion method. Therefore, by locking the protrusion l8, the steel plates IG and 17 can be easily aligned in the tube axis direction.
また、土中に対して推進中には、土と鋼板1G,l7と
の間に生じる摩擦力Fが受口部l2の段部l4で受け止
められ、外装コンクU−}15に対する鋼板lfi,
17の位置づれが防止される。Furthermore, while being propelled into the soil, the frictional force F generated between the soil and the steel plates 1G, 17 is received by the stepped portion l4 of the socket portion 12, and the steel plates lfi,
17 is prevented from shifting.
発明の効果
以上述べたように本発明によれば、芯管の受口部外周に
設けた段部で一側の外装板を管軸心方向において係止し
、他側の外装板に設けた突部によって一側の外装板の端
部に他側の外装板を係止することによって鋼板どうしの
位置合わせを容易に行うことができ、外装コンクリート
に対する外装板の位置づれを防止することができる。Effects of the Invention As described above, according to the present invention, the outer plate on one side is locked in the tube axis direction by the step provided on the outer periphery of the socket portion of the core tube, and the outer plate on the other side is fixed. By locking the other side of the exterior plate to the end of one side of the exterior plate using the protrusion, the steel plates can be easily aligned with each other, and the position of the exterior plate with respect to the exterior concrete can be prevented. .
第1図は本発明の一実施例を示す全体構成図、第2図か
ら第3図は一側の外装板の配置状態を示す斜視図、第4
図から第5図は他側の外装板の配置状態を示す斜視図、
第6図は従来の推進工法用管の全体構成図である。
II・・・鋳鉄管、12・・・受口部、13・・・挿口
部、14・・・段部、15・・・外装コンクリ−1−、
IG, 17・・・鋼板、18・・・段部。FIG. 1 is an overall configuration diagram showing one embodiment of the present invention, FIGS. 2 to 3 are perspective views showing the arrangement of one side of the exterior plate, and FIG.
Figures 5 to 5 are perspective views showing the arrangement of the exterior plate on the other side;
FIG. 6 is an overall configuration diagram of a conventional propulsion method pipe. II...Cast iron pipe, 12...Socket part, 13...Inlet part, 14...Step part, 15...Exterior concrete 1-,
IG, 17... Steel plate, 18... Step portion.
Claims (1)
リートの外周を囲んで複数の外装板を設けた推進工法用
管において、芯管の受口部外周に外装板を管軸心方向に
おいて係合する環状の段部を設け、芯管の受口部側に配
置される一側の外装板を挿口部側に配置される他側の外
装板に内嵌して設け、他側の外装板に一側の外装板の端
部に係合する突部を設けたことを特徴とする推進工法用
管。1. In a pipe for the propulsion method in which an exterior concrete is provided around the outer periphery of the core pipe and a plurality of exterior plates are provided surrounding the outer periphery of the exterior concrete, the exterior plate is engaged with the outer periphery of the socket part of the core pipe in the direction of the tube axis. An annular step is provided, and one side of the exterior plate placed on the socket side of the core tube is fitted inside the other side of the exterior plate placed on the insertion port side, and the other side of the exterior plate A pipe for use in a propulsion method, characterized in that a protrusion that engages with an end of an exterior plate on one side is provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1234362A JPH0396787A (en) | 1989-09-08 | 1989-09-08 | Pipe for propulsive method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1234362A JPH0396787A (en) | 1989-09-08 | 1989-09-08 | Pipe for propulsive method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0396787A true JPH0396787A (en) | 1991-04-22 |
Family
ID=16969818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1234362A Pending JPH0396787A (en) | 1989-09-08 | 1989-09-08 | Pipe for propulsive method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0396787A (en) |
-
1989
- 1989-09-08 JP JP1234362A patent/JPH0396787A/en active Pending
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