JP3096220B2 - Pressure-resistant cylindrical pipe and its laying method - Google Patents
Pressure-resistant cylindrical pipe and its laying methodInfo
- Publication number
- JP3096220B2 JP3096220B2 JP07062794A JP6279495A JP3096220B2 JP 3096220 B2 JP3096220 B2 JP 3096220B2 JP 07062794 A JP07062794 A JP 07062794A JP 6279495 A JP6279495 A JP 6279495A JP 3096220 B2 JP3096220 B2 JP 3096220B2
- Authority
- JP
- Japan
- Prior art keywords
- steel shell
- concrete
- cylindrical
- pressure
- pipe
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Lining And Supports For Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高低差を有する貯水池
などの連絡導水管や水道本管などの高い内圧を受ける導
水管又は導水トンネルなどに用いる比較的口径の大きい
耐圧円筒管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-resistant cylindrical pipe having a relatively large diameter used for a water pipe or a water tunnel receiving a high internal pressure, such as a communication water pipe such as a reservoir having a height difference or a water main pipe.
【０００２】[0002]
【従来の技術】高い内圧を受ける管、例えば夜間余剰電
力を有効に利用する揚水式水力発電所の揚水管などで
は、高い内圧を受けると共に、大きな流量を確保するこ
とが必要で、大口径の耐圧管を要求される。このよう
な、高い内圧を受ける水道本管や高低差の大きい連絡導
水管などの耐圧円筒管では、管口径が大きくなるに従い
管壁に作用する周張力（フープテンション）が増大し厚
肉なものを必要とする問題があった。2. Description of the Related Art Pipes receiving a high internal pressure, for example, pumping pipes of a pumped-storage type hydroelectric power plant that effectively utilizes surplus power at night, require a high internal pressure and a large flow rate. A pressure tube is required. In such pressure-resistant cylindrical pipes such as water main pipes that receive high internal pressure and connecting water pipes with a large difference in height, the peripheral tension (hoop tension) acting on the pipe wall increases as the pipe diameter increases, and the pipe is thick. There was a problem that required.
【０００３】従来、山岳地の水路トンネルなどでは、開
削したトンネル内面に現場打ちでコンクリートライニン
グして通水空間を形成するのが通常であり、長期間の工
事を必要とし、経済性・施工速度などに対して改善すべ
き余地がある。一方、施工性の向上や省力化などの観点
から、地中又は地上から開削した空間に既製の管体を敷
設して管路を構築する場合は、管の外周空間への裏込め
や埋戻し土による地山圧・土圧などの外圧が均一になる
ように施工するのが容易ではなく、偏圧による管体の変
形、管壁のひび割れなどが生じ漏水や破断に至る場合も
ある。[0003] Conventionally, in a channel tunnel in a mountainous area or the like, it is usual to form a water passage space by casting a concrete lining on the inner surface of an excavated tunnel in situ, which requires long-term construction, economical efficiency and construction speed. There is room for improvement. On the other hand, from the viewpoint of workability improvement and labor saving, when constructing a pipeline by laying a ready-made pipe in the ground or underground from the ground, backfilling or backfilling of the pipe in the outer space It is not easy to carry out the construction so that the external pressure such as the ground pressure and the earth pressure by the soil becomes uniform, and the deformation of the pipe due to the uneven pressure, the crack of the pipe wall, etc. may occur, leading to water leakage or breakage.
【０００４】図６はトンネル内に設置された円筒管１の
状況を示すもので、一般に裏込材１４は緊密に充填する
ことが困難なので、円筒管１の外面に空隙１５を生じ、
円筒管１に内圧１３が掛ったときに偏荷重を生ずる。ま
た図７は、開削された地中に設置された円筒管１が不均
一な偏圧１６を受け、内圧１３がかかったときに変形を
生ずるおそれがあることを示したものである。FIG. 6 shows the condition of the cylindrical pipe 1 installed in the tunnel. In general, it is difficult to fill the backing material 14 tightly, so that a void 15 is formed on the outer surface of the cylindrical pipe 1.
When an internal pressure 13 is applied to the cylindrical tube 1, an eccentric load is generated. FIG. 7 also shows that the cylindrical pipe 1 installed in the ground that has been cut and cut may be deformed when subjected to uneven pressure 16 and an internal pressure 13 is applied.
【０００５】[0005]
【発明が解決しようとする課題】本発明はこのような場
合に用いる円筒管であって、内圧を受ける比較的大口径
の管路として適切な耐圧円筒管及びその敷設方法を提供
することを目的とする。本発明の課題は次のとおりであ
る。 （１）可及的に薄肉で合理的な構造を有すること。 （２）既製部材として輸送可能な大きさ、重量であるこ
と。 （３）大口径のものはセグメント化し、現地組立可能と
すること。 （４）内圧に耐えると共に外偏圧にも耐えること。SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure-resistant cylindrical pipe suitable for use as a cylindrical pipe used in such a case as a pipe having a relatively large diameter and receiving an internal pressure, and a method of laying the same. And The objects of the present invention are as follows. (1) As thin as possible and having a reasonable structure. (2) A size and weight that can be transported as a ready-made member. (3) Large-diameter products should be segmented to enable local assembly. (4) Withstand internal pressure and external bias.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題を解決
するもので、外側鋼殻と内側鋼殻との間にコンクリート
を充填した鋼・コンクリート合成構造の円弧状セグメン
トの連結体である円筒状管体であって、該外側鋼殻外周
面又は外側鋼殻内壁面にフープ状に配設したＰＣ緊張材
で、該円筒状管体にフープ緊張力を導入してなることを
特徴とする耐圧円筒管を提供する。 SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, arcuate segment of the steel-concrete synthesis structure filled with concrete between the outer steel shell and inner steel shell
A tubular tendon member which is a hoop-shaped member disposed on the outer peripheral surface of the outer steel shell or on the inner wall surface of the outer steel shell.
In, that provides a pressure cylinder tube, wherein Rukoto such by introducing hoop tension to the cylindrical tube.
【０００７】本発明は管壁を鋼板とコンクリートの合成
管体とすると共に、管壁断面に均一な圧縮応力を残存さ
せることによって上記目的を達成する。本発明の耐圧円
筒管の敷設方法は、鋼・コンクリート合成構造の鋼殻セ
グメントを複数連結した円筒管ピースを順次連結し、そ
の外側空間にコンクリートを充填する円筒管の敷設方法
において、分割した円弧状二重鋼殻セグメントを製作
し、現地で円筒状に溶接して組立て、二重鋼殻の外側鋼
殻と内側鋼殻との間にコンクリートを充填し、コンクリ
ート硬化後二重鋼殻外周にＰＣ緊張材を巻付け、フープ
緊張力を導入して合成構造円筒体ピースを形成し、該円
筒体ピースを順次溶接して連結することを特徴とする耐
圧円筒管の敷設方法である。 The present invention achieves the above object by forming a tube wall of a composite tube of steel plate and concrete and leaving uniform compressive stress in the cross section of the tube wall. The method for laying a pressure-resistant cylindrical pipe according to the present invention includes a steel shell
Segments are connected sequentially, and the
Method of laying cylindrical pipes filling concrete outside the space
In the above, a divided arc-shaped double steel shell segment is manufactured, assembled on site by cylindrical welding, filled with concrete between the outer steel shell and the inner steel shell of the double steel shell, PC tensioning material is wound around the outer periphery of the heavy steel shell, a hoop tension is introduced to form a cylindrical member having a synthetic structure, and the cylindrical members are sequentially welded and connected.
This is a method for laying a compression cylinder tube.
【０００８】[0008]
【作用】本発明により次の作用を生じる。 （ａ）ＰＣ緊張材がフープテンションに対抗するので耐
圧抵抗性が格段に向上し、二重鋼殻は比較的薄肉の鋼板
で形成することができる。 （ｂ）鋼殻内部にコンクリートを充填して合成構造とし
たので、耐力が増大する。The following effects are produced by the present invention. (A) Since the PC tendon material resists the hoop tension, the pressure resistance is significantly improved, and the double steel shell can be formed of a relatively thin steel plate. (B) Since the inside of the steel shell is filled with concrete to form a composite structure, the proof stress increases.
【０００９】本発明の管体を鉄筋コンクリート（ＲＣ）
で実現しようとすると、内圧に耐えるものとするには大
きな壁厚を必要とし、また鉄筋や型枠の加工・組立、型
枠支保工など現場作業が多く煩雑となる。また、プレキ
ャストコンクリートセグメントを工場で製造し現地に搬
入して組立て、ＰＣ緊張材を挿入してプレストレスを導
入することによって一体化する方法もあるが、接合面な
どが高精度のプレキャストコンクリートセグメントを製
造する必要がある。The pipe of the present invention is made of reinforced concrete (RC).
In order to withstand the internal pressure, a large wall thickness is required, and on-site operations such as processing and assembling of reinforcing bars and formwork, and supporting the formwork are complicated. There is also a method in which a precast concrete segment is manufactured at a factory, brought into the site, assembled, and integrated by inserting a PC tendon and introducing prestressing. Need to be manufactured.
【００１０】本発明の管体は、可搬性を考慮して分割し
た円弧状の二重鋼殻セグメントを工場などで製作し、現
地に搬入後円筒状に組立て接合面の鋼板を溶接結合し、
二重鋼殻内にコンクリートを充填し、コンクリート硬化
後鋼殻外周に添設したシースにＰＣ緊張材を挿入するか
シースドワイヤを巻きつけるなどによってＰＣ緊張材を
螺旋状に巻きつけ、このＰＣ緊張材にプレストレスを導
入して定着し、円筒管の内圧により発生するフープテン
ションに抵抗するようにし、合成構造の円筒体ピースを
形成する。この円筒体ピースを敷設位置に仮設置し、同
様にして形成したピースを長手方向に連結するように接
合端面を合致させて突合円周方向の鋼板接合部を溶接す
る。この接合部鋼板を互いに軸方向に延出させておき、
溶接後延出部が形成した空間内にコンクリートを充填す
る構造としてもよい。The tubular body of the present invention is manufactured in a factory or the like by splitting an arc-shaped double steel shell segment in consideration of portability, and then transporting it to the site, assembling it into a cylindrical shape, and welding and joining the steel plates at the joint surfaces.
The concrete is filled in the double steel shell, and after the concrete is hardened, the PC tendon is spirally wound by inserting a PC tendon into a sheath attached to the outer periphery of the steel shell or winding a sheathed wire. A prestress is introduced into the tube to fix it, so as to resist hoop tension generated by the internal pressure of the cylindrical tube, thereby forming a cylindrical piece having a composite structure. This cylindrical piece is temporarily installed at the laying position, and the similarly formed pieces are joined so that the joining end faces thereof are connected in the longitudinal direction, and the steel plate joint in the abutting circumferential direction is welded. This joint steel plate is extended in the axial direction with each other,
It is good also as a structure which fills the space which the extension part formed after welding with concrete.
【００１１】本発明の円筒管を鋼殻とコンクリートとの
合成構造とした長所は、地中埋設後管外周に生じる空隙
などによる偏圧に対して一体構造として作用し、大きな
曲げ剛性を有する構造となる。ＰＣ緊張材により外周に
フープテンションに対抗するプレストレスを導入するこ
とにより、ＲＣ構造のコンクリート管と比べて、応力的
に明解な構造となる。ＰＣ緊張材用シースは外側の鋼板
の外周または外側の鋼板の内壁にガイドパイプラインを
設けることにより、ＰＣ緊張材の配置を容易にできる。An advantage of the cylindrical tube of the present invention, which is a composite structure of a steel shell and concrete, is that the tube has a large bending stiffness, acting as an integral structure against a partial pressure caused by a void or the like generated around the tube after being buried underground. Becomes By introducing a prestress against the hoop tension on the outer circumference by the PC tendon, the structure becomes clearer in terms of stress than a concrete pipe having an RC structure. The PC tendon sheath can be easily arranged by providing a guide pipeline on the outer periphery of the outer steel plate or the inner wall of the outer steel plate.
【００１２】接合した円筒管ピースを敷設するのは、公
知の推進方法によって１ピース毎に推進し、順次その後
方に円筒管ピースを継足し所定の管長まで推進すること
も可能である。以上の本発明の敷設方法によれば、比較
的軽量な鋼殻セグメントを搬入組立することによって、
コンクリート型枠が不要の上、鉄筋の加工・組立も必要
としないため、省力化と工期短縮を図る効果が大であ
る。It is also possible to lay the joined cylindrical pipe pieces one by one by a known propulsion method, and to successively add the cylindrical pipe pieces to the rear of the pieces to protrude to a predetermined pipe length. According to the above laying method of the present invention, by carrying in and assembling a relatively lightweight steel shell segment,
Since no concrete formwork is required and no processing or assembly of the reinforcing bar is required, the effect of saving labor and shortening the construction period is great.
【００１３】なお、本発明の耐圧円筒管の構造は橋梁の
橋脚に使用することができる。耐荷力の大きな橋脚に対
しては本発明の構造の円筒管内の中空部分にコンクリー
トを詰めた中実の構造にするとよい。The structure of the pressure-resistant cylindrical pipe of the present invention can be used for a bridge pier. For a pier having a large load-bearing capacity, a solid structure in which the hollow portion in the cylindrical pipe of the structure of the present invention is filled with concrete may be used.
【００１４】[0014]
【実施例】図１に本発明の実施例の円筒管１の斜視図を
示した。二重鋼殻２は外側鋼殻３、内側鋼殻４、つなぎ
材５によって形成されたセグメントを、接合部６で溶接
接合して円筒管１を形成する。二重鋼殻２内にはコンク
リート７が充填され、鋼殻とコンクリートとの合成構造
の管壁を形成している。外側鋼殻３の外周にはシース９
を螺旋状に巻き付け、その中にＰＣ緊張材を挿通してこ
れを緊張しフープ圧縮力を付与している。図２は円筒管
１の縦断面を示すもので外側鋼殻３と内側鋼殻４とは円
周つなぎ材５によって二重鋼殻２を形成し、管長手方向
を内周溶接１０、外周溶接１１によって連結する。図３
はこの連結部の部分拡大図である。図３に示すように、
外側鋼殻３、内側鋼殻４をそれぞれ管軸方向に延出させ
ておき、溶接１０，１１の施工が容易なようにしてお
き、この延出した鋼殻が形成した空間内にコンクリート
７を充填孔などから充填することができる。図４は円筒
管１の横断面を示すもので、外側鋼殻３，内側鋼殻４に
よって形成されている円弧状のセグメントは内シーム溶
接１７、外シーム溶接１８によって連結される。つなぎ
材５には窓１９が設けられており、この窓１９を通って
コンクリートが連通するのでコンクリート打設が容易で
ある。図５は緊張材８を外側鋼殻３の内面側、すなわち
コンクリート７内に設けたものである。このＰＣ緊張材
８はコンクリート中に埋設されたシース９内に挿通され
る。シース９は管内面に端部を露出し、この部分にＰＣ
緊張材の両端の定着部を設ける。図５の実施例ではＰＣ
緊張材８が内蔵され外側鋼殻３の外周面に凹凸が生じな
いので推進時の障害とならないので一層合理的である。FIG. 1 is a perspective view of a cylindrical tube 1 according to an embodiment of the present invention. In the double steel shell 2, the cylindrical pipe 1 is formed by welding and joining the segments formed by the outer steel shell 3, the inner steel shell 4, and the connecting member 5 at a joint 6. The double steel shell 2 is filled with concrete 7 to form a tube wall of a composite structure of steel shell and concrete. A sheath 9 is provided on the outer periphery of the outer steel shell 3.
Is wound spirally, and a PC tendon is inserted thereinto to tension it, thereby applying a hoop compressive force. FIG. 2 shows a longitudinal section of the cylindrical pipe 1. The outer steel shell 3 and the inner steel shell 4 form a double steel shell 2 by a circumferential connecting material 5, and the pipe longitudinal direction is inner circumference welding 10 and outer circumference welding. 11 are connected. FIG.
FIG. 3 is a partially enlarged view of the connecting portion. As shown in FIG.
The outer steel shell 3 and the inner steel shell 4 are each extended in the pipe axis direction so that the welding 10 and 11 can be easily performed, and the concrete 7 is placed in the space formed by the extended steel shell. It can be filled from a filling hole or the like. FIG. 4 shows a cross section of the cylindrical pipe 1. The arc-shaped segments formed by the outer steel shell 3 and the inner steel shell 4 are connected by an inner seam weld 17 and an outer seam weld 18. The connecting member 5 is provided with a window 19, and concrete is communicated through the window 19, so that concrete can be easily poured. FIG. 5 shows that the tendon 8 is provided on the inner side of the outer steel shell 3, that is, in the concrete 7. The PC tendon 8 is inserted into a sheath 9 buried in concrete. The end of the sheath 9 is exposed on the inner surface of the tube.
Fixing portions at both ends of the tendon are provided. In the embodiment of FIG.
Since the tension member 8 is built in and the outer peripheral surface of the outer steel shell 3 does not have irregularities, it does not hinder the propulsion, which is more rational.
【００１５】本発明の耐圧円筒管の設計例を説明する。
内圧ｐ＝１２０ｔｆ／ｍ2 （１２ｋｇｆ／ｃｍ2 ）の作
用する内径Ｄ＝８．０ｍの管路の周張力Ｔは、 Ｔ＝ｐ（Ｄ／２）＝４８０ｔｆ／ｍ（管長） である。鋼殻を形成する内外の鋼板の板厚ｔ1 ＝ｔ2 ＝
０．０２２ｍ（２２ｍｍ）とし、充填コンクリート厚ｔ
ｃ＝０．２５ｍ（２５ｃｍ）とし、鋼殻コンクリートの
合成構造として計算すると、鋼殻コンクリート円筒壁断
面に生じる引張応力σscは、 σsc ＝周張力Ｔ／｛コンクリート厚ｔｃ＋ｎ（鋼板ｔ1 ＋ｔ2 ）｝ ＝４８０／（０．２５＋６×０．０４４） ＝９３４ｔｆ／ｍ2 ＝９３．４ｋｇｆ／ｃｍ2 ここに、ｎは鋼材・コンクリートのヤング係数比で、鋼
材のヤング係数 Ｅｓ＝２１００×１０4 ｔｆ／ｍ2 、
コンクリートのヤング係数 Ｅｃ＝３５０×１０4 ｔｆ
／ｍ2 から、ｎ＝２１００／３５０＝６とした。A design example of the pressure-resistant cylindrical tube of the present invention will be described.
The circumferential tension T of a pipe having an inner diameter D = 8.0 m on which an internal pressure p = 120 tf / m 2 (12 kgf / cm 2 ) acts is T = p (D / 2) = 480 tf / m (pipe length). Thickness t 1 = t 2 = of inner and outer steel plates forming a steel shell
0.022m (22mm), filled concrete thickness t
Assuming that c = 0.25 m (25 cm) and calculating as a composite structure of steel shell concrete, the tensile stress σ sc generated in the steel shell concrete cylindrical wall section is as follows: σ sc = peripheral tension T / ｛concrete thickness tc + n (steel plate t 1 + t) 2 )｝ = 480 / (0.25 + 6 × 0.044) = 934 tf / m 2 = 93.4 kgf / cm 2 where n is the Young's modulus ratio of steel / concrete, and Young's modulus of steel Es = 2100 × 10 4 tf / m 2 ,
Young's modulus of concrete Ec = 350 × 10 4 tf
/ M 2 , n = 2100/350 = 6.
【００１６】次に、外周に設ける補強ＰＣ緊張材とし
て、ＰＣ緊張材φ２１．８（引張強度＝Ｔｐ＝３４ト
ン）を、管長１ｍ当り１４本使用すると、与えられる周
応力（プレストレス）は、 σp ＝（Ｔｐ×Ｎ）／｛ｔｃ＋ｎ（ｔ1 ＋ｔ2 ）｝ ＝（３４×１４）／｛０．２５＋６×（０．０２２＋０．０２２）｝ ＝９２６ｔｆ／ｍ2 ＝９２．６ｋｇｆ／ｃｍ2 となる。従って、合成応力Σσは Σσ＝σsc＋σp ＝−９３．４＋９２．６＝−０．８ｋｇｆ／ｃｍ2 となり、内圧によって生ずるフープテンションはほとん
どＰＣ緊張材のプレストレスのみでカバーすることがで
き、鋼殻の断面を考慮に入れれば極めて安全率の高い管
体が得られる。Next, when 14 PC tension members φ21.8 (tensile strength = Tp = 34 tons) are used as reinforcement PC tension members provided on the outer periphery per pipe length of 1 m, the circumferential stress (prestress) given is: σ p = (Tp × N) / {tc + n (t 1 + t 2 )} = (34 × 14) / {0.25 + 6 × (0.022 + 0.022)} = 926 tf / m 2 = 92.6 kgf / cm 2 Becomes Accordingly, the resultant stress Σσ is Σσ = σ sc + σ p = −93.4 + 92.6 = −0.8 kgf / cm 2 , and the hoop tension generated by the internal pressure can be almost covered only by the prestress of the PC tendon, Taking into account the section of the steel shell, a tube with a very high safety factor can be obtained.
【００１７】本例は比較的大口径の場合を例としたが、
必要な口径・内圧に対応する管体に応じ、鋼板の厚さ、
コンクリート壁の厚さを最適なもので設計することが可
能である。次に本発明の耐圧円筒管を圧力トンネルに使
用する場合の敷設方法について説明する。二重鋼殻構造
の鋼板製のセグメントを円筒状に組上げ、その内部にコ
ンクリートを充填し一体構造の円筒体ピースとする。そ
の後円筒体ピースの外径に配置したプレストレス用ＰＣ
緊張材にてプレストレスを与える。この状態にしておい
て、掘削済みのトンネル内に搬入し、既設の円筒体に接
合し、押出施工する。円筒体ピース間の接合は鋼板の溶
接による。外側、内側の順に溶接し、溶接によって形成
された空所にグラウトし、押出す。円筒体ピースの長手
方向の長さは組立て時のハンドリングを考慮して定め
る。内径Ｄが８ｍの場合、円周長さはπＤ＝２５．１
ｍ、円筒体ピースの長さを２ｍとすると、重量Ｗは、２
５．１×０．０４４×２．０×７．８５＝１７．３４ト
ンとなる。In this example, the case of a relatively large diameter is taken as an example.
Depending on the pipe corresponding to the required diameter and internal pressure, the thickness of the steel sheet,
It is possible to design a concrete wall with an optimum thickness. Next, a method of laying when the pressure-resistant cylindrical tube of the present invention is used for a pressure tunnel will be described. A segment made of a steel plate having a double steel shell structure is assembled into a cylindrical shape, and the inside thereof is filled with concrete to form a cylindrical body piece having an integral structure. PC for prestress placed on the outer diameter of the cylindrical piece
Prestress with tendon. In this state, it is carried into a tunnel that has been excavated, joined to an existing cylinder, and extruded. The connection between the cylindrical pieces is by welding of steel plates. Weld in the outer and inner order, grout into the void formed by welding and extrude. The length in the longitudinal direction of the cylindrical piece is determined in consideration of handling during assembly. When the inner diameter D is 8 m, the circumferential length is πD = 25.1.
m, and the length of the cylindrical piece is 2 m, the weight W is 2
5.1 x 0.044 x 2.0 x 7.85 = 17.34 tons.
【００１８】本実施例では、型枠の取付け取り外しや鉄
筋の組立が不要であるので、短工期の施工が可能とな
る。In this embodiment, since it is not necessary to attach and remove the formwork and assemble the reinforcing bars, it is possible to perform the construction in a short construction period.
【００１９】[0019]
【発明の効果】本発明の耐圧円筒管は上記のように構成
されているので、内圧、外偏圧に対して強靭で、すぐれ
た特性を有し、また運搬可能なサイズ、重量に合わせて
分割した鋼殻セグメントを型枠及び構造材として円筒管
を現場施工することができ、型枠、鉄筋などの加工・組
立が不要となり省力化、工期短縮など経済性の向上に寄
与する。Since the pressure-resistant cylindrical tube of the present invention is constructed as described above, it is strong against internal pressure and external partial pressure, has excellent characteristics, and can be transported according to its size and weight. A cylindrical pipe can be constructed on site using the divided steel shell segments as a formwork and a structural material, which eliminates the need for processing and assembly of the formwork, reinforcing bars, etc., thereby contributing to an improvement in economic efficiency such as labor saving and shortening the construction period.
【図１】実施例の斜視図である。FIG. 1 is a perspective view of an embodiment.
【図２】実施例の縦断面図である。FIG. 2 is a longitudinal sectional view of the embodiment.
【図３】実施例の鋼殻の接合部の縦断面図である。FIG. 3 is a longitudinal sectional view of a joint portion of the steel shell of the embodiment.
【図４】実施例の鋼殻の接合部の横断面図である。FIG. 4 is a cross-sectional view of a joint portion of the steel shell of the embodiment.
【図５】実施例の縦断面図である。FIG. 5 is a longitudinal sectional view of the embodiment.
【図６】トンネルの横断面図である。FIG. 6 is a cross-sectional view of a tunnel.
【図７】地中埋設管路の横断面図である。FIG. 7 is a cross-sectional view of an underground pipeline.
１ 円筒管 ２ 鋼殻 ３ 外側鋼殻 ４ 内側鋼殻 ５ つなぎ材 ６ 接合部 ７ コンクリート ８ ＰＣ緊張材 ９ シース １０ 内周溶接 １１ 外周溶接 １３ 内圧 １４ 裏込材 １５ 空隙 １６ 偏圧 １７ 内シーム溶
接 １８ 外シーム溶接 １９ 窓DESCRIPTION OF SYMBOLS 1 Cylindrical pipe 2 Steel shell 3 Outer steel shell 4 Inner steel shell 5 Connecting material 6 Joining part 7 Concrete 8 PC tendon 9 Sheath 10 Inner circumference welding 11 Outer circumference welding 13 Internal pressure 14 Backing material 15 Air gap 16 Uneven pressure 17 Internal seam welding 18 Outside seam welding 19 Window
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−26893（ＪＰ，Ａ) 実開 昭62−196234（ＪＰ，Ｕ) 実開 昭55−47570（ＪＰ，Ｕ) 実開 平２−58189（ＪＰ，Ｕ) 特公 昭25−1743（ＪＰ，Ｂ１) 特公 昭45−20744（ＪＰ，Ｂ１) 特公 昭48−6911（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) E02B 9/06 E21D 11/14 ──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-7-26893 (JP, A) JP-A 62-196234 (JP, U) JP-A 55-47570 (JP, U) JP-A 2- 58189 (JP, U) JP-B 25-1743 (JP, B1) JP-B 45-20744 (JP, B1) JP-B 48-6911 (JP, B1) (58) Fields surveyed (Int. Cl. 7 , DB name) E02B 9/06 E21D 11/14
Claims (2)
トを充填した鋼・コンクリート合成構造の円弧状セグメ
ントの連結体である円筒状管体であって、該外側鋼殻外
周面又は外側鋼殻内壁面にフープ状に配設したＰＣ緊張
材で、該円筒状管体にフープ緊張力を導入してなること
を特徴とする耐圧円筒管。1. A circular arc-shaped segment of the steel-concrete synthesis structure filled with concrete between the outer steel shell and inner steel shell
A tubular member, which is a connecting member of components, and which is a PC tendon member disposed in a hoop shape on the outer peripheral surface of the outer steel shell or the inner wall surface of the outer steel shell, to introduce a hoop tension into the cylindrical tubular member. the pressure-resisting cylinder tube, characterized in Rukoto such Te.
ントを複数連結した円筒管ピースを順次連結し、その外
側空間にコンクリートを充填する円筒管の敷設方法にお
いて、分割した円弧状二重鋼殻セグメントを製作し、現
地で円筒状に溶接して組立て、二重鋼殻の外側鋼殻と内
側鋼殻との間にコンクリートを充填し、コンクリート硬
化後二重鋼殻外周にＰＣ緊張材を巻付け、フープ緊張力
を導入して合成構造円筒体ピースを形成し、該円筒体ピ
ースを順次溶接して連結することを特徴とする耐圧円筒
管の敷設方法。2. A steel shell segment having a steel / concrete composite structure.
Cylindrical pipe pieces with multiple parts connected in series,
The method of laying a cylindrical pipe to fill the side space with concrete
Then, a divided arc-shaped double steel shell segment is manufactured, welded into a cylindrical shape at the site, assembled, filled with concrete between the outer steel shell and the inner steel shell of the double steel shell, and hardened after concrete hardening. A method of laying a pressure-resistant cylindrical pipe, comprising: wrapping a PC tendon around the outer periphery of a heavy steel shell, introducing a hoop tension to form a cylindrical member having a synthetic structure, and sequentially welding and connecting the cylindrical members. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07062794A JP3096220B2 (en) | 1995-03-22 | 1995-03-22 | Pressure-resistant cylindrical pipe and its laying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07062794A JP3096220B2 (en) | 1995-03-22 | 1995-03-22 | Pressure-resistant cylindrical pipe and its laying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08260448A JPH08260448A (en) | 1996-10-08 |
| JP3096220B2 true JP3096220B2 (en) | 2000-10-10 |
Family
ID=13210620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07062794A Expired - Fee Related JP3096220B2 (en) | 1995-03-22 | 1995-03-22 | Pressure-resistant cylindrical pipe and its laying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3096220B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100491470B1 (en) * | 2002-05-06 | 2005-05-30 | (주)아이팝엔지니어링종합건축사사무소 | Formwork for water and sewage or passage through the road |
| CN1304779C (en) * | 2004-08-18 | 2007-03-14 | 武汉大学 | Steel skeleton composite pipe |
| CN104075041B (en) * | 2014-01-10 | 2016-03-23 | 伦慧东 | The moulding process of prestressing force strengthening composite steel tube |
| US9341287B2 (en) * | 2014-02-24 | 2016-05-17 | Lockheed Martin Corporation | Friction stir welded pipes |
| CN105822848A (en) * | 2016-06-06 | 2016-08-03 | 太仓斯普宁精密机械有限公司 | High-strength composite part capable of easy processing |
| KR101710872B1 (en) * | 2016-07-08 | 2017-02-28 | 주식회사 에스씨플러스 | Pipe Lining Structure and Method of Building the Same |
| CN108253205B (en) * | 2016-12-28 | 2024-05-14 | 北京市水利规划设计研究院 | Pipeline and assembly thereof |
| CN107202223A (en) * | 2017-06-23 | 2017-09-26 | 成都金玉雄辉建筑工程有限公司 | Anti-corrosion push pipe |
| CN207555004U (en) * | 2017-10-31 | 2018-06-29 | 北京市水利规划设计研究院 | PCCP pipeline prestressed reinforcement structures |
-
1995
- 1995-03-22 JP JP07062794A patent/JP3096220B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08260448A (en) | 1996-10-08 |
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