JPH076589B2 - How to connect the sheath tube - Google Patents

How to connect the sheath tube

Info

Publication number
JPH076589B2
JPH076589B2 JP63230067A JP23006788A JPH076589B2 JP H076589 B2 JPH076589 B2 JP H076589B2 JP 63230067 A JP63230067 A JP 63230067A JP 23006788 A JP23006788 A JP 23006788A JP H076589 B2 JPH076589 B2 JP H076589B2
Authority
JP
Japan
Prior art keywords
sheath tube
diameter
sheath
adhesive
tube
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
Application number
JP63230067A
Other languages
Japanese (ja)
Other versions
JPH0280884A (en
Inventor
清司 内藤
正人 木村
正隆 岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP63230067A priority Critical patent/JPH076589B2/en
Publication of JPH0280884A publication Critical patent/JPH0280884A/en
Publication of JPH076589B2 publication Critical patent/JPH076589B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/55—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles sealing elements being incorporated into the joints, e.g. gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明はアースアンカー等に用いるシース管の接続方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a method for connecting a sheath tube used for an earth anchor or the like.

〈従来の技術〉 アースアンカー工法等においては、PC鋼より線やアンカ
ー材、引張材等が地下水等によって腐食しないように、
PC鋼より線等の周囲にシース管を配置する場合がある。<Prior art> In the earth anchor construction method, etc., make sure that PC steel strands, anchor materials, tensile materials, etc. do not corrode due to groundwater, etc.
A sheath tube may be placed around a PC stranded wire or the like.

このシース管には、熱可塑性樹脂製の直管タイプやコル
ゲート管タイプのものが存在する。As the sheath tube, there are a straight tube type and a corrugated tube type made of a thermoplastic resin.

〈本発明が解決しようとする問題点〉 例えばアースアンカーの場合には、アンカーの耐力を十
分にとるために、その全長が数十メートルにも及ぶ場合
がある。<Problems to be Solved by the Present Invention> For example, in the case of a ground anchor, the total length thereof may reach several tens of meters in order to obtain sufficient anchoring strength of the anchor.

このような場合には、シース管を複数本接続して使用す
ることになる。In such a case, a plurality of sheath tubes are connected and used.

一般にシース管の接続は、接着材によってシース管の端
面同士を接着する方法が行われている。In general, the sheath tubes are connected by a method of adhering the end surfaces of the sheath tubes with an adhesive material.

しかし、シース管の端面は、シース管の肉厚巾の環状面
であり、非常に小面積であるため、接着面積を十分に得
ることができず、接着力が低下する。However, since the end surface of the sheath tube is an annular surface having a thick wall width of the sheath tube and has a very small area, a sufficient adhesive area cannot be obtained, and the adhesive force is reduced.

従って、従来の方法ではシース管の連結力が弱いため、
例えばアンカー等に使用し、シース管に大きな引張力が
作用する場合には、シース管の接続部に間隙が生じる
か、あるるいはシース管同士が完全に離反してしまうお
それがある。Therefore, since the connecting force of the sheath tube is weak in the conventional method,
For example, when the sheath tube is used as an anchor or the like and a large tensile force is applied to the sheath tube, a gap may occur at the connecting portion of the sheath tube or the sheath tubes may be completely separated from each other.

その結果、シース管の間隙部から周囲の地下水等が浸入
し、PC鋼より線等を腐食させる原因となる。As a result, the surrounding groundwater and the like infiltrate through the gap of the sheath pipe, causing corrosion of the PC steel strands and the like.

〈本発明の目的〉 本発明は上記のような問題点を解決するためになされた
もので、シース管の接続部の強度を高めることができる
シース管の接続方法を提供することを目的とする。<Object of the Present Invention> The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for connecting a sheath tube capable of increasing the strength of the connecting portion of the sheath tube. .

〈本発明の構成〉 以下、図面を参照しながら本発明の一実施例について説
明する。<Structure of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.

なお、本発明は直管と直管、直管とコルゲート管、コル
ゲート管とコルゲート管同士の接続を行うことができる
が、本実施例においてはコルゲートシース管を例に挙げ
て説明する。In the present invention, the straight pipe and the straight pipe, the straight pipe and the corrugated pipe, and the corrugated pipe and the corrugated pipe can be connected to each other, but in the present embodiment, the corrugated sheath pipe will be described as an example.

〈イ〉使用する装置及び材料 （１）拡径沿具（第１図） 拡径沿具１は、温度調節可能なヒーター11を内蔵した、
鋼材等で形成した円錐台状の部材である。<a> Equipment and materials to be used (1) Expanding tool (Fig. 1) The expanding tool 1 has a built-in heater 11 with adjustable temperature.
It is a truncated cone-shaped member made of steel or the like.

この拡径沿具１の一方の端面は、接続するシース管の内
径より小径に形成し、他方の端面はシース管の内径より
大径に形成する。One end surface of the diameter expansion tool 1 is formed with a diameter smaller than the inner diameter of the sheath tube to be connected, and the other end surface is formed with a diameter larger than the inner diameter of the sheath tube.

また、拡径沿具１の周面は、コルゲートシース管の接続
の場合には、コルゲートシース管の形状に適合するよう
に波型に形成するが、直管のシース管の接続の場合には
その必要はない。Further, the peripheral surface of the diameter-expanding tool 1 is formed in a corrugated shape so as to fit the shape of the corrugated sheath tube when connecting the corrugated sheath tube, but when connecting the straight tube sheath tube. no need to do that.

そして、拡径沿具１の大径端面には、把手12を取り付け
る。Then, the handle 12 is attached to the large-diameter end surface of the diameter-expanding tool 1.

なお、この拡径沿具１の表面には、溶融したシース管が
付着しないように、テフロン加工等を施しておくとよ
い。The surface of the diameter-expanding tool 1 is preferably subjected to Teflon processing or the like so that the molten sheath tube does not adhere to it.

（２）接着材、シール材 接着材としては、例えばエポキシ系接着材あるいは、ホ
ットメルト型系接着材を用いる。(2) Adhesive Material, Sealing Material As the adhesive material, for example, an epoxy adhesive material or a hot melt adhesive material is used.

またシール材としては、シリコーンゴム等を用いる。Silicone rubber or the like is used as the sealing material.

接着材及びシール材には、その他種々の材料を使用すこ
とができる。Various other materials can be used for the adhesive and the sealant.

〈ロ〉シース管の接続手順 （１）接続端部の拡径（第２図） 先ず、拡径沿具１内のヒーター11を発熱させ、拡径沿具
１を所定の温度まで加熱する。<B> Connection procedure of sheath tube (1) Expansion of diameter of connection end (Fig. 2) First, the heater 11 in the expansion tool 1 is heated to heat the expansion tool 1 to a predetermined temperature.

このときの拡径沿具１の加熱温度は、シース管２が変形
する程度でよい。The heating temperature of the diameter expanding tool 1 at this time may be such that the sheath tube 2 is deformed.

次に、接続予定の一方のシース管２の接続端部内に、拡
径沿具１を小径面側からねじ込む。Next, the diameter-expanding tool 1 is screwed into the connection end portion of one sheath tube 2 to be connected from the small diameter surface side.

このとき、拡径沿具１の把手12を持って回しながらねじ
込むと、拡径沿具１の表面波型に形成されているため、
シース管２の内面と適合して、スムーズに内部にねじ込
むことができる。At this time, if the handle 12 of the diameter-expanding tool 1 is turned and screwed in, the surface-corrugated shape of the diameter-expanding tool 1 is formed.
It fits the inner surface of the sheath tube 2 and can be smoothly screwed into the inside.

そして、所定の深さまでねじ込んだ後、拡径沿具１を逆
回転させてシース管２内から引き抜く。Then, after being screwed up to a predetermined depth, the diameter-expanding tool 1 is reversely rotated and pulled out from the sheath tube 2.

すると、シース管２の接続端部の径が拡大されて、拡径
端部21が形成させる。Then, the diameter of the connecting end portion of the sheath tube 2 is enlarged, and the enlarged diameter end portion 21 is formed.

（２）シース管の接続（第３図） 接続予定の他方のシース管２の接続端部には、上記のよ
うな拡径作業は行わない。(2) Connection of sheath tube (Fig. 3) The above-mentioned diameter expansion work is not performed on the connection end of the other sheath tube 2 to be connected.

この拡径しないシース管２の接続端部を、拡径したシー
ス管２の拡径端部21内に挿入する。The connection end portion of the sheath tube 2 which is not expanded in diameter is inserted into the expanded diameter end portion 21 of the expanded sheath tube 2.

そして、両方のシース管２の重なり合った部分に生じ間
隙に、接着材を注入して２本のシース管２を一体に接続
する。Then, an adhesive is injected into the gap formed in the overlapping portion of both the sheath tubes 2 to integrally connect the two sheath tubes 2.

また、第３図に示すように、間隙部にシール材４、接着
材３の順で注入して、シース管２の接続部の止水効果を
高めることも可能である。Further, as shown in FIG. 3, it is also possible to inject the sealing material 4 and the adhesive material 3 in this order in the gap portion to enhance the water blocking effect of the connecting portion of the sheath tube 2.

〈作用〉 本発明のシース管２の接続方法は、シース管２の重なり
部分に生じる間隙に、接着材３等を注入するものであ
る。<Operation> The method of connecting the sheath tube 2 of the present invention is to inject the adhesive 3 and the like into the gap formed in the overlapping portion of the sheath tube 2.

そのため、接着材３によって、拡径端部21の内面と、拡
径しないシース管２の接合端部の外面とが接着されるこ
とになる。Therefore, the adhesive 3 bonds the inner surface of the expanded diameter end 21 to the outer surface of the joint end of the sheath tube 2 that does not expand in diameter.

即ち、従来のシース管の肉厚巾の端面同士の接着面積と
比較すると、本発明は著しく接着面積が増大することに
なる。That is, the present invention significantly increases the adhesive area as compared with the conventional adhesive area between the end faces of the wall thickness of the sheath tube.

従って、接着面積の増大にともなって接着力が著しく増
加し、シース管２を強固に一体化することができる。Therefore, the adhesive force is significantly increased with the increase of the adhesive area, and the sheath tube 2 can be firmly integrated.

また、両方のシース管２の重なり部分の長さは、拡径作
業の深さと、拡径しないシース管２の挿入深さによっ
て、自由に調節することができる。In addition, the length of the overlapping portion of both sheath tubes 2 can be freely adjusted by the depth of the diameter expansion work and the insertion depth of the sheath tube 2 that does not expand the diameter.

そのため、重なり部分の長さを調節して、接着面積の増
減を行うことによって、シース管２の所望の接合耐力を
得ることができる。Therefore, the desired joining strength of the sheath tube 2 can be obtained by adjusting the length of the overlapping portion and increasing or decreasing the bonding area.

さらに、拡径端部21は端面側に向かって徐々に広がって
いるため、重なり部分の間隙も次第に大きく形成されて
いる。Further, since the enlarged diameter end portion 21 gradually widens toward the end face side, the gap between the overlapping portions is gradually formed larger.

そのため、接着材３等の注入を隅々まで容易に行うこと
ができ、また接着材３等の注入厚さも十分に確保するこ
とができる。Therefore, the injection of the adhesive 3 or the like can be easily performed to every corner, and the injection thickness of the adhesive 3 or the like can be sufficiently secured.

従って、強固にシース管２の接続を行うことができる。Therefore, the sheath tube 2 can be firmly connected.

〈本発明の効果〉 本発明は以上説明したようになるので、次のような効果
を期待することができる。<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

〈イ〉従来技術は、接着材によっててシース管の肉厚巾
の端面同士を接着する方法であるため、接着面積を十分
に得ることができず、接着力が低下する原因となる。<A> Since the conventional technique is a method of adhering the end surfaces of the sheath tube having a wide wall thickness with an adhesive, it is not possible to obtain a sufficient adhesive area, which causes a decrease in adhesive strength.

それに対して本発明は、シース管を拡径して接続し、シ
ース管の重なり部分に生じる間隙に、接着材等を注入す
るものである。On the other hand, in the present invention, the diameter of the sheath tube is expanded and connected, and an adhesive or the like is injected into the gap formed in the overlapping portion of the sheath tube.

そのため、接着材によって、拡径端部の内面と、拡径し
ないシース管の接合端部の外面とが接着されることにな
る。Therefore, the inner surface of the expanded end portion is bonded to the outer surface of the joint end portion of the sheath tube that does not expand the diameter by the adhesive material.

即ち、従来のシース管の、肉厚巾の端面同士の接着面積
と比較すると、本発明は著しく接着面積が増大すること
になる。That is, the present invention significantly increases the bonding area as compared with the bonding area between the end surfaces of the conventional sheath tube having the thick width.

従って、接着面積の増大にともなって接着力が著しく増
加し、シース管を強固に一体化することができるととも
に、気密性にも優れている。Therefore, the adhesive force remarkably increases with an increase in the adhesive area, the sheath tube can be firmly integrated, and the airtightness is excellent.

従って、例えばアンカー工法等において使用した場合で
も、周囲の地下水等が浸入するおそれがなく、PC鋼より
線等の腐食を防止することができる。Therefore, even when used in, for example, the anchor construction method, there is no possibility of infiltration of surrounding groundwater and the like, and corrosion of PC steel strands and the like can be prevented.

〈ロ〉本発明は、シース管そのものを押し広げて接続す
るため、接続用の他部材を必要とせず、経済的である。<B> The present invention is economical because it does not require any other member for connection because the sheath tube itself is expanded and connected.

〈ハ〉シース管の重なり部分の長さは、拡径作業の深さ
と、拡径しないシース管の挿入深さによって自由に調節
することができる。<C> The length of the overlapping portion of the sheath tube can be freely adjusted depending on the depth of the diameter expansion work and the insertion depth of the sheath tube that does not expand the diameter.

そのため、重なり部分の長さを調節して、接着面積の増
減を行うことによって、シース管の所望の接合耐力を得
ることができる。Therefore, the desired joining strength of the sheath tube can be obtained by adjusting the length of the overlapping portion and increasing or decreasing the bonding area.

従って、各種施工への適用範囲が広くなる。Therefore, the range of application to various constructions becomes wider.

〈ニ〉拡径沿具の径を変更することにより、シース管の
拡径端部の径を自由に選択することができる。<D> By changing the diameter of the diameter expansion tool, the diameter of the diameter expansion end of the sheath tube can be freely selected.

そのため、径の異なるシース管同士でも容易に接続する
ことができる。Therefore, even sheath tubes having different diameters can be easily connected to each other.

〈ホ〉シース管の拡径端部は、端面側に向かって徐々に
広がっているため、重なり部分の間隙も次第に大きく形
成されている。<E> Since the expanded end of the sheath tube gradually widens toward the end face side, the gap between the overlapping portions is also gradually increased.

そのため、接着材等の注入を隅々まで容易に行うことが
でき、また接着材等の注入厚さも十分に確保することで
きる。Therefore, the injection of the adhesive or the like can be easily performed to every corner, and the injection thickness of the adhesive or the like can be sufficiently secured.

従って、強固にシース管の接続を行うことができる。Therefore, the sheath tube can be firmly connected.

【図面の簡単な説明】[Brief description of drawings]

第１図：拡径沿具１の一実施例の説明図 第２図：拡径作業の説明図 第３図：シース管の接続作業の説明図 Fig. 1: Explanatory diagram of an embodiment of the diameter-expanding tool 1 Fig. 2: Explanatory diagram of the diameter-expanding work Fig. 3: Explanatory diagram of the connecting work of the sheath tube

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−108108（ＪＰ，Ａ) 特開 昭55−40311（ＪＰ，Ａ) 実公 昭31−8464（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-108108 (JP, A) JP-A-55-40311 (JP, A) Jikho-31-8464 (JP, Y1)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】アースアンカー工法等において使用するシ
ース管の接続方法において、 先端部はシース管内径より小径で、尾端部はシース管内
径より大径のテーパー状の周面を有し、かつ加熱手段を
有する拡径沿具を用いて、 一方のシース管の接続端部を、前記拡径沿具をその先端
より圧入しかつ加熱して拡径し、 その拡径したシース管の接続端部内に、他方の拡径しな
いシース管の接続端部を嵌合し、 重なり合った接続端部の間隙に接着材を注入して、 シース管同士を一体に接続することを特徴とする、 シース管の接続方法。1. A method of connecting a sheath tube used in an earth anchor construction method, etc., wherein the tip portion has a diameter smaller than the inner diameter of the sheath tube, and the tail end portion has a tapered peripheral surface having a diameter larger than the inner diameter of the sheath tube. By using a diameter-expanding tool having a heating means, the connecting end of one sheath tube is press-fitted from the tip of the diameter-expanding tool and heated to expand the diameter, and the connecting end of the expanded sheath tube. The sheath tube is characterized in that the connection end of the other unexpanded sheath tube is fitted into the inside of the section, and an adhesive is injected into the gap between the overlapping connection ends to integrally connect the sheath tubes. Connection method.
JP63230067A 1988-09-16 1988-09-16 How to connect the sheath tube Expired - Fee Related JPH076589B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63230067A JPH076589B2 (en) 1988-09-16 1988-09-16 How to connect the sheath tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63230067A JPH076589B2 (en) 1988-09-16 1988-09-16 How to connect the sheath tube

Publications (2)

Publication Number Publication Date
JPH0280884A JPH0280884A (en) 1990-03-20
JPH076589B2 true JPH076589B2 (en) 1995-01-30

Family

ID=16902022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63230067A Expired - Fee Related JPH076589B2 (en) 1988-09-16 1988-09-16 How to connect the sheath tube

Country Status (1)

Country Link
JP (1) JPH076589B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5837083A (en) * 1993-08-12 1998-11-17 Booth; John Peter Method of forming a rigid tubular body
DE19924898A1 (en) * 1999-06-01 2000-12-07 Foell Remswerk Expanding tool for pipes
DE102006003942B4 (en) 2006-01-26 2008-03-06 Faurecia Innenraum Systeme Gmbh Method for ultrasonic welding and motor vehicle building module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540311A (en) * 1978-09-08 1980-03-21 Tokyo Shibaura Electric Co Jointing construction of pipes having differencial material quality
JPS58108108A (en) * 1981-12-22 1983-06-28 Seibu Polymer Kasei Kk Method and device for joining pipes

Also Published As

Publication number Publication date
JPH0280884A (en) 1990-03-20

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