JPH057358Y2 - - Google Patents
Info
- Publication number
- JPH057358Y2 JPH057358Y2 JP1987133492U JP13349287U JPH057358Y2 JP H057358 Y2 JPH057358 Y2 JP H057358Y2 JP 1987133492 U JP1987133492 U JP 1987133492U JP 13349287 U JP13349287 U JP 13349287U JP H057358 Y2 JPH057358 Y2 JP H057358Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- stepped
- outer diameter
- protective wall
- 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
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 description 10
- 229920013716 polyethylene resin Polymers 0.000 description 7
- 239000002689 soil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は推進工法用管に関する。[Detailed explanation of the idea] Industrial applications The present invention relates to pipes for use in propulsion construction methods.
従来の技術
推進工法は、刃口もしくはシールド機によつて
土中を掘進しながら、管を直接圧入して管路を築
造するものであり、従来この推進工法に用いられ
る管は、管胴部の外周に外装コンクリートを設け
て、管胴部と半径方向に突出する受口部とを面一
に形成し、土中における管の推進抵抗の低減を図
つていた。Conventional technology In the propulsion method, a pipe is constructed by directly press-fitting a pipe while digging into the soil using a blade or a shield machine. Conventionally, the pipe used in this propulsion method is Exterior concrete was provided around the outer periphery of the pipe, and the pipe body and the socket part protruding in the radial direction were formed flush with each other in order to reduce the propulsion resistance of the pipe in the soil.
考案が解決しようとする問題点
しかし、上記従来の構成によれば、管胴部の周
囲に外装コンクリートを設けるために、コストが
高騰する問題があつた。Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, there was a problem in that the cost increased because the exterior concrete was provided around the pipe body.
本考案は上記問題点を解決するもので、外装コ
ンクリートを設けることなく推進抵抗の減少およ
びコストの低減を図つた推進工法用管を提供する
ことを目的とする。 The present invention solves the above-mentioned problems, and aims to provide a pipe for the propulsion method that reduces propulsion resistance and costs without providing exterior concrete.
問題点を解決するための手段
上記問題点を解決するため、本考案は、管一端
部に、管胴部より一段小さな外径を成すとともに
管胴部と同外径に形成された管他端部に内嵌合可
能な形状の段部を形成し、この段部の奥端に形成
される段差面を管他端部の端面に当接可能に形成
し、段部を除く管外周を、防食性を有する樹脂材
で被覆し、段差面を含む段部近傍の管外周を、樹
脂材で被覆された管他端部よりも大きな外径を成
す環状の防護壁部に形成するとともに、この防護
壁部の管胴部に続く周部をテーパ面に形成した構
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 that one end of the tube has an outer diameter one step smaller than the tube body, and the other end of the tube is formed to have the same outer diameter as the tube body. A stepped portion is formed in a shape that allows internal fitting, and a stepped surface formed at the inner end of the stepped portion is formed so as to be able to abut against the end surface of the other end of the tube, and the outer periphery of the tube excluding the stepped portion is The outer periphery of the pipe near the stepped part, including the stepped surface, is coated with a resin material having anti-corrosion properties, and is formed into an annular protective wall having a larger outer diameter than the other end of the pipe covered with the resin material. The circumferential portion of the protective wall portion following the tube body portion is formed into a tapered surface.
作 用
上記したように構成された管においては、一方
の管を管他端部に他方の管の段部を内嵌合させる
とともに一方の管の管他端部の端面を他方の管の
段差面に当接させて接続する。したがつて、管継
手部の外径が管胴部と同径となり、土中に推進す
る時に、管継手部が推進抵抗を生じさせず、管の
推進を容易に行なえる。しかも、管は樹脂材によ
る薄い被覆層によつて防食されるので、従来のよ
うに管胴部の外周に外装コンクリートを必要とし
なくなり、コストの低減が図られる。さらに、防
護壁部によつて管他端部におけるポリエチレン樹
脂の端部を土壁との接触より防護することができ
る。In the pipes constructed as described above, the step of one pipe is fitted into the other end of the other pipe, and the end face of the other end of the one pipe is abutted against the step of the other pipe. Therefore, the outer diameter of the pipe joint is the same as that of the pipe body, and the pipe joint does not create thrust resistance when thrusting into the ground, making it easy to thrust the pipe. Moreover, since the pipe is protected from corrosion by a thin resin coating layer, exterior concrete is no longer required around the outside of the pipe body as in the past, and costs are reduced. Furthermore, the protective wall protects the polyethylene resin end of the other end of the pipe from contact with the earthen wall.
実施例
以下、本考案の一実施例を図面に基づいて説明
する。第１図において、一方の管１の管一端部に
は、管胴部１ａより一段小さな外径を成すととも
に管胴部１ａと同外径に形成された管他端部に内
嵌合可能な形状の段部２が形成されている。そし
て、この段部２の奥端には、他方の管１の管他端
部の端面に当接する段差面３が形成されており、
段部２の外周には環状に溝部４が形成されてい
る。この溝部４の底部には半径方向に突出する環
状の突起５が形成されており、この突起５に係合
する凹部６を形成された環状のシール材７が段部
２に外嵌合する他方の管１の管他端部の内周面に
圧接された状態で溝部４に配置されている。そし
て、段差面３を含む段部２の近傍の管外周は、管
他端部よりも大きな外径を成す環状の防護壁部８
に形成されている。また、この防護壁部８の管胴
部１ａに続く周部はテーパ面８ａに形成されてい
る。そして、この防護壁部８および段部２を除く
管外周は防食性を有するテープ状のポリエチレン
樹脂９を巻回して被覆されており、このポリエチ
レン樹脂９で被覆されており、このポリエチレン
樹脂９で被覆された管他端部の外径は防護壁部８
の外径より小さくなるように形成されている。ま
た、管１の内周にはモルタルライニング１０が両
端部を除いて形成されている。そして、このよう
に構成された管１が土中１１に推進されている。Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In FIG. 1, one end of one tube 1 has an outer diameter one step smaller than the tube body 1a, and is capable of fitting into the other end of the tube formed to have the same outer diameter as the tube body 1a. A shaped stepped portion 2 is formed. A stepped surface 3 is formed at the rear end of this stepped portion 2, and is in contact with the end surface of the other end of the other tube 1.
An annular groove 4 is formed on the outer periphery of the stepped portion 2 . An annular projection 5 protruding in the radial direction is formed at the bottom of the groove 4, and an annular sealing material 7 having a recess 6 that engages with the projection 5 fits externally into the step 2. The tube 1 is disposed in the groove 4 in pressure contact with the inner circumferential surface of the other end of the tube 1. The outer periphery of the tube near the stepped portion 2 including the stepped surface 3 is an annular protective wall portion 8 having a larger outer diameter than the other end of the tube.
is formed. Further, the peripheral portion of the protective wall portion 8 that continues to the tube body portion 1a is formed into a tapered surface 8a. The outer periphery of the pipe, excluding the protective wall portion 8 and the stepped portion 2, is covered with a tape-shaped polyethylene resin 9 having anti-corrosion properties. The outer diameter of the other end of the covered tube is the protective wall part 8.
It is formed to be smaller than the outer diameter of. Further, a mortar lining 10 is formed on the inner periphery of the tube 1 except for both ends. The pipe 1 configured in this manner is then propelled into the soil 11.
以下、上記構成における作用について説明す
る。まず、土中１１に管１を、管胴部１ａと同外
径を成す管他端部を前方にして挿入し、推進ジヤ
ツキ（図示せず）にて推進させる。この時、推力
の伝達は管他端部の端部と段差面３との間におい
て行なわれる。そして、推進させられる管１の管
継手部、すなわち一方の管１の段部２に他方の管
１の管他端部を外嵌させる部分の外径が管胴部１
と同径となり、土中１１に推進する時に、管継手
部が推進抵抗を生じさせないので、管１の推進を
容易に行なえる。そして、このことによつて従来
のように管胴部１ａの外周に外装コンクリートを
必要としなくなり、ポリエチレン樹脂９による薄
い被覆層によつて防食することが可能となる。し
かも、推進時には、防護壁部８が管他端部におけ
るポリエチレン樹脂９の端部を土壁との接触より
防護するので、ポリエチレン樹脂９のはく離が防
止される。この時、防護壁部８の半径方向への突
出はわずかなものであるとともに、テーパ面８ａ
を形成されているので、防護壁部８による推進抵
抗はわずかなものとなる。 Hereinafter, the effects of the above configuration will be explained. First, the pipe 1 is inserted into the soil 11 with the other end of the pipe having the same outer diameter as the pipe body 1a facing forward, and is propelled by a propulsion jack (not shown). At this time, the thrust is transmitted between the other end of the tube and the stepped surface 3. Then, the outer diameter of the pipe joint part of the pipe 1 to be propelled, that is, the part where the other end of the other pipe 1 is fitted onto the step part 2 of one pipe 1, is the pipe body part 1.
Since the pipe joint part does not create any propulsion resistance when propelled into the soil 11, the pipe 1 can be easily propelled. This eliminates the need for exterior concrete around the outer periphery of the tube body 1a as in the conventional case, and it becomes possible to provide corrosion protection with a thin coating layer of polyethylene resin 9. Furthermore, during propulsion, the protective wall portion 8 protects the end of the polyethylene resin 9 at the other end of the tube from contact with the earthen wall, so that peeling of the polyethylene resin 9 is prevented. At this time, the protrusion of the protective wall portion 8 in the radial direction is slight, and the tapered surface 8a
, the propulsion resistance due to the protective wall portion 8 is slight.
次に、第２図は本考案の他の実施例を示すもの
であり、同様の作用を行う部材については同一番
号を付して説明を省略する。すなわち、この実施
例においては、シール材７を押圧する押輪２１
と、この押輪２１に螺合するとともに押輪２１を
シール材７に向けて付勢するネジ部２２とからな
る押圧装置２３が溝部４に配置されている。そし
て、この構成においては、管他端部に段部２をあ
る程度挿入し、すくなくともシール材７が管他端
部の内周に圧接される状態で、ネジ部２２の回動
によつて押輪２１をシール材７に向けて移動さ
せ、この押輪２１によりシール材７を押圧し、シ
ール材７の管他端部の内周に対する密着性を増加
させる。そして、この状態において、管他端部に
段部２をさらに押し込んで接合を完了する。した
がつて、この実施例においては、シール材７の密
着性が増加されるので、シール材７を小径なもの
とするとともに、シール材７を配置する溝部４を
小さくすることが出来、このことによつて段部２
の半径方向への突出を小さくして段部２による通
水性の減退を軽減することが出来る。そして、管
１の推進時には先の実施例と同様の作用効果が得
られる。 Next, FIG. 2 shows another embodiment of the present invention, and the same reference numerals are given to the members that perform the same functions, and the explanation thereof will be omitted. That is, in this embodiment, the press ring 21 that presses the sealing material 7
A pressing device 23 is disposed in the groove 4 and includes a threaded portion 22 that is screwed onto the press ring 21 and urges the press ring 21 toward the sealing material 7 . In this configuration, the stepped portion 2 is inserted to some extent into the other end of the tube, and the push ring 21 is rotated by the rotation of the threaded portion 22 in a state in which at least the sealing material 7 is pressed against the inner periphery of the other end of the tube. is moved toward the sealing material 7, and the pressing ring 21 presses the sealing material 7, thereby increasing the adhesion of the sealing material 7 to the inner periphery of the other end of the tube. In this state, the stepped portion 2 is further pushed into the other end of the tube to complete the joining. Therefore, in this embodiment, since the adhesion of the sealing material 7 is increased, the diameter of the sealing material 7 can be made small, and the groove portion 4 in which the sealing material 7 is disposed can be made small. Stepped part 2
By reducing the protrusion in the radial direction, it is possible to reduce the reduction in water permeability due to the stepped portion 2. When the tube 1 is propelled, the same effects as in the previous embodiment can be obtained.
考案の効果
以上述べたごとく本考案によれば、管胴部と管
継手部とを面一に形成することによつて、従来の
ように外装コンクリートを設けずとも推進抵抗の
低減を図ることが出来るとともに、コストの低下
を図れる。また、防護壁部によつてポリエチレン
樹脂の端部と土壁との接触を防護することができ
る。Effects of the invention As described above, according to the invention, by forming the pipe body and the pipe joint flush, it is possible to reduce propulsion resistance without providing exterior concrete as in the past. At the same time, it is possible to reduce costs. Further, the protective wall portion can protect the end portion of the polyethylene resin from coming into contact with the earthen wall.
第１図は本考案の一実施例を示す全体構成図、
第２図は本考案の他の実施例を示す全体構成図で
ある。
１……管、２……段部、３……段差面、８……
防護壁部、８ａ……テーパ面、９……ポリエチレ
ン樹脂。
FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is an overall configuration diagram showing another embodiment of the present invention. 1...Pipe, 2...Step part, 3...Step surface, 8...
Protective wall portion, 8a... Tapered surface, 9... Polyethylene resin.
Claims (1)
とともに管胴部と同外径に形成された管他端部に
内嵌合可能な形状の段部を形成し、この段部の奥
端に形成される段差面を管他端部の端面に当接可
能に形成し、段部を除く管外周を、防食性を有す
る樹脂材で被覆し、段差面を含む段部近傍の管外
周を、樹脂材で被覆された管他端部よりも大きな
外径を成す環状の防護壁部に形成するとともに、
この防護壁部の管胴部に続く周部をテーパ面に形
成したことを特徴とする推進工法用管。 At one end of the tube, a stepped portion is formed that has an outer diameter one step smaller than the tube body and has the same outer diameter as the tube body, and is shaped to be able to fit inside the other end of the tube. The stepped surface formed at the end is formed so that it can come into contact with the end surface of the other end of the tube, and the outer periphery of the tube excluding the stepped portion is coated with a resin material having anti-corrosion properties, and the outer periphery of the tube near the stepped portion including the stepped surface is is formed into an annular protective wall portion having a larger outer diameter than the other end of the pipe covered with a resin material, and
A pipe for use in a propulsion method, characterized in that a peripheral part of the protective wall portion that continues to the pipe body is formed into a tapered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987133492U JPH057358Y2 (en) | 1987-09-01 | 1987-09-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987133492U JPH057358Y2 (en) | 1987-09-01 | 1987-09-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6437596U JPS6437596U (en) | 1989-03-07 |
| JPH057358Y2 true JPH057358Y2 (en) | 1993-02-24 |
Family
ID=31391400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987133492U Expired - Lifetime JPH057358Y2 (en) | 1987-09-01 | 1987-09-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH057358Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088190U (en) * | 1983-11-24 | 1985-06-17 | 日本電信電話株式会社 | Joint device for underground pipes using propulsion method |
| JPH0410319Y2 (en) * | 1985-10-07 | 1992-03-13 |
-
1987
- 1987-09-01 JP JP1987133492U patent/JPH057358Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6437596U (en) | 1989-03-07 |
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