JP2001020456A - Sheathed pipe for pc steel material and its joint - Google Patents
Sheathed pipe for pc steel material and its jointInfo
- Publication number
- JP2001020456A JP2001020456A JP11192998A JP19299899A JP2001020456A JP 2001020456 A JP2001020456 A JP 2001020456A JP 11192998 A JP11192998 A JP 11192998A JP 19299899 A JP19299899 A JP 19299899A JP 2001020456 A JP2001020456 A JP 2001020456A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- main body
- steel
- sheath
- inner peripheral
- 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
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＰＣ鋼材用シース
パイプ及びそのジョイント、例えば、橋梁等のコンクリ
ート構造物を構築する際のプレストレス工法の外ケーブ
ル構造に使用されるＰＣ鋼材の保護用シースパイプ及び
そのジョイントに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheath pipe for protection of PC steel used in an outer cable structure of a prestressing method for constructing a concrete pipe such as a bridge and a joint pipe thereof, for example, a bridge. It relates to a pipe and its joint.
【０００２】[0002]
【従来の技術と課題】近年、橋梁等のコンクリート構造
物の構築には、高耐久構造とするために、鋼材を張り渡
してプレストレスを与える工法が盛んに採用されてい
る。図９に示すように、ＰＣ工法の外ケーブル構造で用
いられるＰＣ鋼材１０は、複数の単線あるいは撚線を合
わせてシース１１で被覆し、シース１１の内部にＰＣ鋼
材１０との間隙を封止する防錆材としてのモルタル１２
を圧入充填して施工されている。2. Description of the Related Art In recent years, in the construction of a concrete structure such as a bridge, a construction method in which a steel material is stretched to apply a prestress has been actively adopted in order to obtain a highly durable structure. As shown in FIG. 9, the PC steel material 10 used in the outer cable structure of the PC method is covered with a sheath 11 by combining a plurality of single wires or stranded wires, and a gap between the PC steel material 10 and the inside of the sheath 11 is sealed. Mortar 12 as anticorrosive material
And press-fitting.
【０００３】しかし、例えば、海岸付近に建設されるコ
ンクリート構造物は、海水や潮風による塩害の影響を受
け、鋼製のシース１１を始めその内部のＰＣ鋼材１０も
腐食損傷するおそれがあり、鋼製シースに替わるものと
して耐腐食性能の高い合成樹脂製シースパイプの開発が
要望されている。この種の合成樹脂製シースパイプとし
ては、まず、モルタル充填時の内圧に耐える高い耐圧性
を備える構造のものであることが必要である。[0003] However, for example, a concrete structure constructed near the seashore is affected by salt damage caused by seawater or sea breeze, and the PC steel material 10 including the steel sheath 11 may be damaged by corrosion. There is a demand for the development of a synthetic resin sheath pipe having high corrosion resistance as an alternative to a sheath sheath. First, it is necessary for this type of synthetic resin sheath pipe to have a structure having a high pressure resistance to withstand the internal pressure at the time of filling the mortar.
【０００４】次に、モルタルを充填する際にシースパイ
プ内に空気が混入してしまうと、ＰＣ鋼材が錆びやすく
なり、その耐久性を損なう不具合がある。従って、シー
スパイプに対してはモルタルの充填後に空気が混入して
いるか否かを判別できる機能が要求されている。また、
内部にＰＣ鋼材を挿入する際に抵抗が大きくなく、挿通
作業が容易であることも要求されている。[0004] Next, if air is mixed into the sheath pipe when filling the mortar, the PC steel material is easily rusted and there is a problem that its durability is impaired. Therefore, the sheath pipe is required to have a function of determining whether air is mixed in after the mortar is filled. Also,
It is also required that the resistance is not large when a PC steel material is inserted into the inside, and that the insertion operation is easy.
【０００５】そこで、本発明の目的は、耐圧性が大き
く、空気の混入を目視で簡単に判別できると共に、ＰＣ
鋼材の挿入作業性が良好な樹脂製のシースパイプを提供
することにある。[0005] Therefore, an object of the present invention is to provide a high pressure resistance, to easily determine the incorporation of air visually,
It is an object of the present invention to provide a resin-made sheath pipe having good workability of inserting a steel material.
【０００６】本発明の他の目的は、前記シースパイプを
互いに接続するのに最適なジョイントを提供することに
ある。Another object of the present invention is to provide an optimal joint for connecting the sheath pipes to each other.
【０００７】[0007]
【発明の構成、作用及び効果】以上の目的を達成するた
め、本発明に係るＰＣ鋼材用シースパイプは、透明な軟
質樹脂材料からなるパイプ本体部と、このパイプ本体部
の内周部に螺旋状に設けられた硬質樹脂材料からなる滑
り材とを備えたことを特徴とする。In order to achieve the above objects, a sheath pipe for a PC steel according to the present invention comprises a pipe main body made of a transparent soft resin material, and a spiral wound around an inner peripheral portion of the pipe main body. And a sliding material made of a hard resin material provided in a shape.
【０００８】以上の本発明にあっては、シースパイプの
主体となるパイプ本体部は軟質樹脂材料からなり可撓性
を有し、かつ、該樹脂材料は透明であるためモルタル充
填後に内部に空気が混入しているか否かを目視によって
容易に判別することができ、ＰＣ鋼材の早期劣化を未然
に防止することができる。しかも、パイプ本体部の内周
部には硬質樹脂材料からなる滑り材が設けられているた
め、ＰＣ鋼材を挿入する際の抵抗力が減少し、挿入作業
性が大きく向上することになる。In the above invention, the pipe body, which is the main part of the sheath pipe, is made of a soft resin material and has flexibility, and since the resin material is transparent, the inside of the mortar is filled with air. It is possible to easily determine visually whether or not the steel is mixed, and it is possible to prevent early deterioration of the PC steel material. In addition, since a sliding material made of a hard resin material is provided on the inner peripheral portion of the pipe main body, the resistance force when the PC steel material is inserted is reduced, and the insertion workability is greatly improved.
【０００９】本発明において、前記滑り材はその横断面
の一部が前記パイプ本体部の内周面から突出するように
パイプ本体部に埋設されていてもよく、あるいは、パイ
プ本体部の内周面と同一面を構成するようにパイプ本体
部に埋設されていてもよい。また、滑り材はパイプ本体
部の補強材としても機能することが好ましい。勿論、滑
り材とは別にパイプ本体部に補強材を螺旋状に設けても
よい。あるいは、滑り材を透明な硬質樹脂材料とすれ
ば、空気混入の視認性をより高めることができる。In the present invention, the sliding member may be embedded in the pipe body such that a part of the cross section thereof protrudes from the inner peripheral surface of the pipe body. It may be embedded in the pipe body so as to form the same surface as the surface. Further, it is preferable that the sliding material also functions as a reinforcing material for the pipe body. Of course, a reinforcing material may be spirally provided on the pipe body separately from the sliding material. Alternatively, if the sliding material is a transparent hard resin material, the visibility of air entrapment can be further improved.
【００１０】また、本発明に係るジョイントは、内周面
が前記シースパイプの外径に略沿った半円形状に二つ割
りされ、両側部にフランジ部を有するジョイント用セグ
メントと、前記一対のセグメントのフランジ部を締結す
る締結部材と、シースパイプとセグメントとの間に介在
されたパテとからなることを特徴とする。In the joint according to the present invention, the inner peripheral surface is divided into two semicircular shapes substantially along the outer diameter of the sheath pipe, and a joint segment having flange portions on both side portions; It is characterized by comprising a fastening member for fastening the flange portion, and a putty interposed between the sheath pipe and the segment.
【００１１】一対のセグメントとその締結部材という簡
単な構成で前記シースパイプを容易に接続することがで
き、パテの存在によってパイプの抜け止めが図られ、止
水性が向上する。[0011] The sheath pipe can be easily connected with a simple structure of a pair of segments and a fastening member thereof, and the presence of the putty prevents the pipe from coming off and improves the water stopping performance.
【００１２】[0012]
【発明の実施の形態】以下、本発明に係るＰＣ鋼材用シ
ースパイプ及びそのジョイントの実施形態について、添
付図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a sheath pipe for PC steel and a joint thereof according to the present invention will be described below with reference to the accompanying drawings.
【００１３】（シースパイプの第１実施形態）図１は本
発明に係るＰＣ鋼材用シースパイプの第１実施形態を示
す。このシースパイプ１Ａは、パイプ本体部２と、螺旋
状の滑り材３とから構成されている。(First Embodiment of Sheath Pipe) FIG. 1 shows a first embodiment of a sheath pipe for PC steel according to the present invention. The sheath pipe 1A is composed of a pipe main body 2 and a spiral sliding member 3.
【００１４】本体部２は、透明な軟質樹脂材料、例え
ば、軟質塩化ビニル樹脂からなり、周知の押出し成形に
よってＸ部分を一単位としてテープ状に連続して成形さ
れ、これを螺旋状に巻回して互いに隣接する側部間で融
着されて１本のパイプ状に形成される。この本体部２は
外周面が波形をなし、内周面はストレートな筒面とされ
ている。The main body 2 is made of a transparent soft resin material, for example, a soft vinyl chloride resin. The main body 2 is continuously formed in a tape shape with the X portion as one unit by well-known extrusion molding, and this is spirally wound. To form a single pipe by fusing between adjacent side parts. The outer peripheral surface of the main body 2 has a waveform, and the inner peripheral surface is a straight cylindrical surface.
【００１５】滑り材３は、透明な硬質樹脂材料、例え
ば、硬質塩化ビニル樹脂からなり、前記本体部２に埋設
された状態で本体部２と同時に押出機のクロスヘッドか
ら押出し成形法によって成形され、本体部２に螺旋状に
埋め込まれる。The sliding member 3 is made of a transparent hard resin material, for example, a hard vinyl chloride resin, and is formed by being extruded from a crosshead of an extruder simultaneously with the main body 2 while being embedded in the main body 2. Is spirally embedded in the main body 2.
【００１６】なお、このような押出し成形法によってパ
イプを製造する工程は周知であり、以下に説明する第
２、第３実施形態でも同様の方法で製造される。The process of manufacturing a pipe by such an extrusion molding method is well known, and the pipes are manufactured by the same method in the second and third embodiments described below.
【００１７】本第１実施形態にあっては、パイプ本体部
２が透明な樹脂材料からなるため、ＰＣ鋼材を挿入する
と共にモルタルを充填した後、内部に空気が混入してい
るか否かを目視によって容易に判別することができる。
ここで、透明とは必ずしも完全な光透過性までを意味す
るものではなく、内部の空気を確認できる範囲で光透過
性を有していればよい。滑り材３に関しては、透明であ
ることが好ましいが、シースパイプ全体における専有面
積が小さいので不透明であっても内部空気の確認を妨げ
ることはない。In the first embodiment, since the pipe body 2 is made of a transparent resin material, after inserting the PC steel material and filling the mortar, it is visually checked whether or not air is mixed in the inside. Can be easily determined.
Here, the term “transparent” does not necessarily mean up to complete light transmittance, but it is sufficient that the material has light transmittance within a range where air inside can be confirmed. The sliding member 3 is preferably transparent, but since the occupying area in the entire sheath pipe is small, even if it is opaque, it does not hinder confirmation of the internal air.
【００１８】さらに、滑り材３はその横断面の一部がパ
イプ本体部２の内周面２ａから突出するように埋設され
ている。従って、ＰＣ鋼材を挿入する際、鋼材が滑り材
３上を滑動していくことになり、抵抗が小さくて挿入作
業性が極めて良好である。また、滑り材３は本体部２の
補強材をも兼ねて耐圧力を大きくしている。Further, the sliding member 3 is embedded so that a part of the cross section thereof protrudes from the inner peripheral surface 2a of the pipe main body 2. Therefore, when a PC steel material is inserted, the steel material slides on the sliding material 3, so that the resistance is small and the insertion workability is extremely good. The sliding member 3 also serves as a reinforcing member for the main body 2 to increase the pressure resistance.
【００１９】なお、滑り材３は、必ずしも本体部２の内
周面２ａから突出している必要はなく、図２に示すよう
に、内周面２ａと同一面を構成するように本体部２に埋
設されていてもよい。The sliding member 3 does not necessarily need to protrude from the inner peripheral surface 2a of the main body 2, and as shown in FIG. It may be buried.
【００２０】（シースパイプの第２実施形態）図３は本
発明に係るＰＣ鋼材用シースパイプの第２実施形態を示
す。このシースパイプ１Ｂは、パイプ本体部２と、螺旋
状の補強材４と、本体部２の内周面２ａに設けた螺旋状
の滑り材５とから構成されている。(Second Embodiment of Sheath Pipe) FIG. 3 shows a second embodiment of a sheath pipe for PC steel according to the present invention. The sheath pipe 1 </ b> B includes a pipe main body 2, a spiral reinforcing member 4, and a spiral sliding member 5 provided on the inner peripheral surface 2 a of the main body 2.
【００２１】本体部２は、前記第１実施形態と同様に、
透明な軟質樹脂材料、例えば、軟質塩化ビニル樹脂から
なり、透明な硬質樹脂材料、例えば、硬質塩化ビニル樹
脂からなる補強材４と共にクロスヘッドから押出し成形
法によってテープ状に連続して成形されると共に螺旋状
に巻回され、補強材４を埋設した状態で１本の長尺のパ
イプ状に形成される。The main body 2 is, like the first embodiment,
It is made of a transparent soft resin material, for example, a soft vinyl chloride resin, and is continuously formed into a tape shape by a extrusion method from a crosshead together with a reinforcing material 4 made of a transparent hard resin material, for example, a hard vinyl chloride resin. It is spirally wound and formed into one long pipe with the reinforcing material 4 embedded.
【００２２】滑り材５は、透明な硬質樹脂材料、例え
ば、硬質塩化ビニル樹脂からなり、別個の押出し機から
押出し成形され、前記本体部２及び補強材４と同時に螺
旋状に巻回され、本体部２の内周面２ａに融着又は接着
剤を使用して固着される。The sliding member 5 is made of a transparent hard resin material, for example, a hard vinyl chloride resin, is extruded from a separate extruder, and is spirally wound at the same time as the main body 2 and the reinforcing member 4. It is fixed to the inner peripheral surface 2a of the portion 2 by fusing or using an adhesive.
【００２３】本第２実施形態の作用効果は前記第１実施
形態と同様であり、内部に残留した空気の確認及びＰＣ
鋼材の挿入作業性の向上を図ることができる。The operation and effect of the second embodiment are the same as those of the first embodiment.
The workability of inserting the steel material can be improved.
【００２４】なお、滑り材５は、必ずしも本体部２の内
周面２ａに固着している必要はなく、図４に示すよう
に、内周面２ａと同一面を構成するように内周面２ａに
埋設されていてもよい。The sliding member 5 does not necessarily need to be fixed to the inner peripheral surface 2a of the main body 2, and as shown in FIG. 4, the inner peripheral surface 2a is formed so as to be flush with the inner peripheral surface 2a. 2a may be embedded.
【００２５】（シースパイプの第３実施形態）図５は本
発明に係るＰＣ鋼材用シースパイプの第３実施形態を示
す。このシースパイプ１Ｃは、前記第２実施形態と同様
に、パイプ本体部２と、螺旋状の補強材４と、本体部２
の内周面２ａに設けた螺旋状の滑り材６とから構成され
ている。(Third Embodiment of Sheath Pipe) FIG. 5 shows a third embodiment of a sheath pipe for PC steel according to the present invention. As in the second embodiment, the sheath pipe 1C includes a pipe main body 2, a spiral reinforcing material 4, and a main body 2
And a helical sliding member 6 provided on the inner peripheral surface 2a.
【００２６】本体部２及び補強材４の材料、構成、製造
方法は、前記第２実施形態と同様である。滑り材６は、
透明な硬質樹脂材料、例えば、硬質塩化ビニル樹脂から
なり、別個の押出し機から押出し成形され、前記本体部
２及び補強材４と同時に螺旋状に巻回され、本体部２の
内周面２ａに融着又は接着剤を使用して固着される。こ
の滑り材６は前記滑り材５が断面平板状で補強材４と同
一のピッチで設けられたのに対して、断面半球状として
補強材４間にそれよりも小さいピッチで複数設けられた
ものである。The material, configuration, and manufacturing method of the main body 2 and the reinforcing member 4 are the same as those in the second embodiment. The sliding material 6
It is made of a transparent hard resin material, for example, a hard vinyl chloride resin, extruded from a separate extruder, spirally wound at the same time as the main body 2 and the reinforcing member 4, and formed on the inner peripheral surface 2 a of the main body 2. It is fixed using fusion or an adhesive. The sliding members 6 are provided with a plurality of sliding members 5 between the reinforcing members 4 as hemispherical cross sections, while the sliding members 5 are provided in the form of a flat plate in cross section and provided at the same pitch as the reinforcing members 4. It is.
【００２７】本第３実施形態の作用効果も前記第１、第
２実施形態と同様であり、内部に残留した空気の確認及
びＰＣ鋼材の挿入作業性の向上を図ることができる。The operation and effect of the third embodiment are the same as those of the first and second embodiments, and it is possible to check the air remaining inside and improve the workability of inserting the PC steel.
【００２８】なお、滑り材６は、必ずしも本体部２の内
周面２ａに固着している必要はなく、図６に示すよう
に、内周面２ａと同一面を構成するように内周面２ａに
埋設されていてもよい。図６では、滑り材６の断面形状
を４角形として示しているが、その断面形状は任意であ
る。The sliding member 6 does not necessarily have to be fixed to the inner peripheral surface 2a of the main body 2, but as shown in FIG. 6, the inner peripheral surface is formed so as to be flush with the inner peripheral surface 2a. 2a may be embedded. In FIG. 6, the cross-sectional shape of the sliding member 6 is shown as a quadrangle, but the cross-sectional shape is arbitrary.
【００２９】（ジョイントの実施形態）以上の構成から
なるシースパイプを互いに接続するには、図７及び図８
に示すジョイント２０を使用することが好ましい。この
ジョイント２０は、内周部がシースパイプ１の外径に略
沿った半円形状に二つ割りにされたセグメント２１と、
ボルト２５及びナット２６と、パテ２７とで構成されて
いる。(Embodiment of Joint) In order to connect the sheath pipes having the above configurations to each other, FIGS.
It is preferable to use the joint 20 shown in FIG. The joint 20 has a segment 21 whose inner peripheral portion is divided into two semicircular shapes substantially along the outer diameter of the sheath pipe 1,
It is composed of a bolt 25 and a nut 26 and a putty 27.
【００３０】セグメント２１は、両側部に穴２３を形成
したフランジ部２２を有し、金属製又は樹脂製である。
パテ２７としては、例えば、エポキシ樹脂が使用され
る。The segment 21 has a flange portion 22 in which holes 23 are formed on both sides, and is made of metal or resin.
As the putty 27, for example, an epoxy resin is used.
【００３１】このジョイント２０で接続するには、ま
ず、シースパイプ１の端部を突き合わせ、その外周面に
パテ２７を貼り付けた状態で一対のセグメント２１で覆
い、フランジ部２２の穴２３にボルト２５を通してナッ
ト２６とで締め付ける。In order to connect with the joint 20, first, the ends of the sheath pipe 1 are butted, covered with a pair of segments 21 with a putty 27 adhered to the outer peripheral surface thereof, and bolts 23 are formed in the holes 23 of the flange portion 22. 25 and nut 26.
【００３２】このようなジョイント２０を使用すれば、
一対のセグメント２１をパテ２７を介してボルト２５及
びナット２６で締め付けるという簡単な作業でシースパ
イプ１を接続することができる。しかも、パテ２７が硬
化することで、シースパイプ１の抜け止め機能が増大
し、かつ、高い止水性能が得られる。If such a joint 20 is used,
The sheath pipe 1 can be connected by a simple operation of tightening the pair of segments 21 with the bolt 25 and the nut 26 via the putty 27. In addition, the hardening of the putty 27 increases the function of the sheath pipe 1 to prevent the sheath pipe 1 from slipping off, and provides high water stopping performance.
【００３３】なお、セグメント２１の内周面は平滑な筒
面であってもよく、あるいは前記各シースパイプ１Ａ，
１Ｂ，１Ｃの外周面と同様の波形であってもよい。The inner peripheral surface of the segment 21 may be a smooth cylindrical surface, or the above-mentioned sheath pipes 1A,
The waveform may be the same as the outer peripheral surfaces of 1B and 1C.
【００３４】（他の実施形態）なお、本発明に係るＰＣ
鋼材用シースパイプ及びそのジョイントは前記実施形態
に限定するものではなく、その要旨の範囲内で種々に変
更することができる。(Other Embodiments) The PC according to the present invention
The steel sheath pipe and the joint thereof are not limited to the above embodiment, but can be variously changed within the scope of the gist.
【００３５】特に、パイプ本体部の構成や製造方法は任
意であり、外周面が平坦な形状であってもよい。また、
本体部２、滑り材３，５，６及び補強材４は前記実施形
態記載のもの以外に種々の材料を使用することが可能で
ある。また、ジョイントの細部の構成は任意であり、パ
テも種々の材料を使用することができる。In particular, the configuration and manufacturing method of the pipe main body are arbitrary, and the outer peripheral surface may be flat. Also,
Various materials other than those described in the above-described embodiment can be used for the main body 2, the sliding members 3, 5, 6, and the reinforcing member 4. Further, the configuration of the details of the joint is arbitrary, and various materials can be used for the putty.
【図１】本発明の第１実施形態であるＰＣ鋼材用シース
パイプを示す構成図。FIG. 1 is a configuration diagram showing a sheath pipe for PC steel according to a first embodiment of the present invention.
【図２】前記第１実施形態の変形例の要部を示す断面
図。FIG. 2 is a sectional view showing a main part of a modification of the first embodiment.
【図３】本発明の第２実施形態であるＰＣ鋼材用シース
パイプを示す構成図。FIG. 3 is a configuration diagram showing a sheath pipe for PC steel according to a second embodiment of the present invention.
【図４】前記第２実施形態の変形例の要部を示す断面
図。FIG. 4 is a sectional view showing a main part of a modification of the second embodiment.
【図５】本発明の第３実施形態であるＰＣ鋼材用シース
パイプを示す構成図。FIG. 5 is a configuration diagram illustrating a sheath pipe for PC steel according to a third embodiment of the present invention.
【図６】前記第３実施形態の変形例の要部を示す断面
図。FIG. 6 is a sectional view showing a main part of a modification of the third embodiment.
【図７】本発明に係るジョイントの一実施形態の使用状
態を示す断面図。FIG. 7 is a sectional view showing a use state of an embodiment of the joint according to the present invention.
【図８】前記ジョイントを構成するセグメントを示す斜
視図。FIG. 8 is a perspective view showing segments constituting the joint.
【図９】ＰＣ鋼材を従来のシースパイプに挿入してモル
タルを充填した状態を示す断面図。FIG. 9 is a cross-sectional view showing a state in which a PC steel material is inserted into a conventional sheath pipe and mortar is filled.
１Ａ，１Ｂ，１Ｃ…ＰＣ鋼材用シースパイプ ２…本体部 ２ａ…内周面 ３…滑り材（補強材兼用） ４…補強材 ５，６…滑り材 ２０…ジョイント ２１…セグメント ２２…フランジ部 ２５…ボルト ２６…ナット ２７…パテ 1A, 1B, 1C ... Sheath pipe for PC steel material 2 ... Main body 2a ... Inner peripheral surface 3 ... Sliding material (also used as reinforcing material) 4 ... Reinforcing material 5, 6 ... Sliding material 20 ... Joint 21 ... Segment 22 ... Flange portion 25 ... bolt 26 ... nut 27 ... putty
───────────────────────────────────────────────────── フロントページの続き (72)発明者 稲掛 哲哉 静岡県掛川市青葉台775−63 (72)発明者 吉富 義樹 静岡県掛川市上西郷2497 Ｆターム(参考） 2E164 AA01 AA04 AA31 DA12 DA13 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tetsuya Inakake 775-63, Aobadai, Kakegawa City, Shizuoka Prefecture (72) Inventor Yoshiki Yoshitomi 2497 Kamishisaigo, Kakegawa City, Shizuoka Prefecture F-term (reference) 2E164 AA01 AA04 AA31 DA12 DA13
Claims (9)
部と、 前記パイプ本体部の内周部に螺旋状に設けられた硬質樹
脂材料からなる滑り材と、 を備えたことを特徴とするＰＣ鋼材用シースパイプ。1. A PC comprising: a pipe main body made of a transparent soft resin material; and a sliding material made of a hard resin material spirally provided on an inner peripheral portion of the pipe main body. Sheath pipe for steel materials.
イプ本体部の内周面から突出するようにパイプ本体部に
埋設されていることを特徴とする請求項１記載のＰＣ鋼
材用シースパイプ。2. The PC steel material according to claim 1, wherein the sliding material is embedded in the pipe body such that a part of a cross section thereof protrudes from an inner peripheral surface of the pipe body. Sheath pipe.
と同一面を構成するようにパイプ本体部に埋設されてい
ることを特徴とする請求項１記載のＰＣ鋼材用シースパ
イプ。3. The sheath pipe for PC steel according to claim 1, wherein said sliding material is embedded in the pipe body so as to form the same surface as the inner peripheral surface of said pipe body.
としても機能するものであることを特徴とする請求項
１、請求項２又は請求項３記載のＰＣ鋼材用シースパイ
プ。4. The sheath pipe for PC steel according to claim 1, wherein the sliding material also functions as a reinforcing material for the pipe body.
部と、 前記パイプ本体部に螺旋状に設けられた補強材と、 前記パイプ本体部の内周部に螺旋状に設けられた硬質樹
脂材料からなる滑り材と、 を備えたことを特徴とするＰＣ鋼材用シースパイプ。5. A pipe main body made of a transparent soft resin material, a reinforcing member spirally provided on the pipe main body, and a hard resin material spirally provided on an inner peripheral portion of the pipe main body. A sheath pipe for PC steel, comprising: a sliding material comprising:
に融着又は接着されていることを特徴とする請求項５記
載のＰＣ鋼材用シースパイプ。6. The sheath pipe for PC steel according to claim 5, wherein the sliding material is fused or bonded to an inner peripheral surface of the pipe main body.
と同一面を構成するようにパイプ本体部に埋設されてい
ることを特徴とする請求項５記載のＰＣ鋼材用シースパ
イプ。7. The sheath pipe for PC steel according to claim 5, wherein the sliding material is embedded in the pipe main body so as to form the same surface as the inner peripheral surface of the pipe main body.
ることを特徴とする請求項１、請求項２、請求項３、請
求項４、請求項５、請求項６又は請求項７記載のＰＣ鋼
材用シースパイプ。8. The sliding member according to claim 1, wherein the sliding member is made of a transparent hard resin material. Sheath pipe for PC steel.
４、請求項５、請求項６、請求項７又は請求項８記載の
ＰＣ鋼材用シースパイプを互いに接続するためのジョイ
ントであって、 内周面が前記シースパイプの外径に略沿った半円形状に
二つ割りされ、両側部にフランジ部を有するジョイント
用セグメントと、 前記一対のセグメントのフランジ部を締結する締結部材
と、 前記シースパイプとセグメントとの間に介在されたパテ
と、 からなることを特徴とするジョイント。9. A joint for connecting PC steel sheath pipes according to claim 1, claim 2, claim 3, claim 3, claim 4, claim 5, claim 6, claim 7, or claim 8. An inner peripheral surface is divided into two semicircular shapes substantially along the outer diameter of the sheath pipe, a joint segment having flange portions on both sides, and a fastening member for fastening the flange portions of the pair of segments. And a putty interposed between the sheath pipe and the segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11192998A JP2001020456A (en) | 1999-07-07 | 1999-07-07 | Sheathed pipe for pc steel material and its joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11192998A JP2001020456A (en) | 1999-07-07 | 1999-07-07 | Sheathed pipe for pc steel material and its joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001020456A true JP2001020456A (en) | 2001-01-23 |
Family
ID=16300526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11192998A Pending JP2001020456A (en) | 1999-07-07 | 1999-07-07 | Sheathed pipe for pc steel material and its joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001020456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003038190A1 (en) * | 2001-10-29 | 2003-05-08 | Anderson Technology Corporation | Transparent protective tube for external cable |
| JP2020076303A (en) * | 2018-11-01 | 2020-05-21 | 株式会社栗本鐵工所 | Sheath coupler, insertion tool for forming sheath end connection, and concrete segment installation method |
-
1999
- 1999-07-07 JP JP11192998A patent/JP2001020456A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003038190A1 (en) * | 2001-10-29 | 2003-05-08 | Anderson Technology Corporation | Transparent protective tube for external cable |
| JP2020076303A (en) * | 2018-11-01 | 2020-05-21 | 株式会社栗本鐵工所 | Sheath coupler, insertion tool for forming sheath end connection, and concrete segment installation method |
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