JP2571380B2 - Geological change absorption joint mechanism of pipeline for structure. - Google Patents
Geological change absorption joint mechanism of pipeline for structure.Info
- Publication number
- JP2571380B2 JP2571380B2 JP62053044A JP5304487A JP2571380B2 JP 2571380 B2 JP2571380 B2 JP 2571380B2 JP 62053044 A JP62053044 A JP 62053044A JP 5304487 A JP5304487 A JP 5304487A JP 2571380 B2 JP2571380 B2 JP 2571380B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- connection port
- support ring
- base end
- cylindrical packing
- 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
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】 「発明の目的」 本発明は構造物に対する管路の地層変動吸收継手機構
に係り、マンホールその他の構造物に対する管路継手部
において沈下や***などの地層変動を適切に吸收せし
め、埋設接續管などの管路部体を構造物接續部などを損
壊することのない強固安定な継手機構を提供しようとす
るものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a joint for absorbing formation fluctuations in a pipeline with respect to a structure, and to appropriately control formation fluctuations such as settlement and uplift at a pipeline joint with a manhole or other structures. An object of the present invention is to provide a strong and stable joint mechanism that absorbs and does not damage a pipe section such as a buried connecting pipe at a structural connecting section or the like.
（産業上の利用分野） マンホール、水槽、開渠、暗渠、タンクなどの構造物
と埋設管等の管路の接續部に関する継手機構。(Industrial application field) A joint mechanism for connecting parts of structures such as manholes, water tanks, open culverts, culverts, tanks, and buried pipes.
従来の技術 マンホールなどの構造物に対し埋設本管等の管路を接
續する機構としてはマンホールなどの構造物側壁に形成
された連結口に管端を挿入しコンクリートなどの充填目
地材により管端と構造物側壁との管の空隙を充填し水密
に閉塞するものである。2. Description of the Related Art As a mechanism for connecting a pipe such as a buried main pipe to a structure such as a manhole, the pipe end is inserted into a connection port formed in a side wall of the structure such as a manhole, and the pipe end is filled with a joint material such as concrete. It fills the gap between the pipe and the side wall of the structure and closes the pipe in a watertight manner.
例えばマンホールを埋設し、これに埋設本管を接續す
る場合には、矢板壁によってマンホール埋設域を囲繞す
ると共に該埋設域を堀削し、この矢板壁内掘削堅坑にマ
ンホールを設定し、次いで推進管などで土層内に設定さ
れた埋設本管の先端部をマンホール側壁に形成された接
續口に挿入し上記のように先端部の周面と接續口内との
間隙にモルタル、コンクリートなどを充填し、その後掘
削堅坑内を埋戻し、そうした後に矢板壁を形成する各矢
板に振動を与えながら抜取るような工法を採用するのが
一般的である。For example, when a manhole is buried and a buried main pipe is connected to the manhole, the manhole buried area is surrounded by a sheet pile wall and the buried area is excavated, and a manhole is set in the excavation pit in the sheet pile wall. Insert the tip of the buried main pipe set in the soil layer with a propulsion pipe etc. into the connection port formed on the side wall of the manhole, and mortar, concrete, etc. into the gap between the peripheral surface of the tip and the connection port as described above. It is common to adopt a construction method of filling and then backfilling the inside of the excavation shaft, and then removing the sheet piles forming the sheet pile wall while applying vibration.
（発明が解決しようとする問題点） 然し上記のような従来のものにおいては施工後の沈下
ないし***によって接續された管路部体ないし構造物接
續部を破壊する可能性が高い。(Problems to be Solved by the Invention) However, in the above-mentioned conventional one, there is a high possibility that the connected pipe portion or the connected portion of the structure is destroyed by sinking or rising after construction.
即ち前記したようなマンホールなどの埋設に当っては
上述のように矢板壁内の如きを掘削した掘削域に設定し
埋戻すことが多いが、埋戻し域においては沈下などが発
生し易く、特に近時においてこのような工事に関し不可
欠的な資材となっている矢板壁を、埋戻し後に振動条件
下で抜取るならば施工直後においてマンホール等の埋設
構造物が沈下する。又各部における大型土木工事の影響
や長期に亘る地盤変動などによってもそれなりの沈下、
***が発生し、そうした沈下等の変動で、構造物に接續
された管路や構造物接續口を中心とした部分に損壊を来
す。That is, when burying a manhole as described above, it is often set and buried in an excavated area such as the inside of a sheet pile wall as described above. In recent years, if a sheet pile wall, which is an indispensable material for such construction, is extracted under vibration conditions after backfilling, buried structures such as manholes will settle immediately after construction. Also, due to the effects of large-scale civil engineering work in each part and long-term ground changes,
Uplift occurs, and such fluctuations such as subsidence cause damage to pipes connected to the structure and the portion centered on the connection port for the structure.
勿論このような管路等の損壊を避けるように構造物に
近接した位置における管路中に夫々沈下等の変動吸收継
手を設けることが考えられるが、この場合においては上
記した沈下ないし***によって管路の一部に勾配変動が
発生し、流体の流動に支障を来し、特に下水配管の如き
においては固形汚物などの停滞による閉塞を発生するこ
ととなる。Of course, it is conceivable to provide variable absorption joints such as settlements in the pipes at positions close to the structure so as to avoid such damage to the pipes and the like. Gradient fluctuations occur in a part of the road, hindering fluid flow, and particularly in sewage pipes, blockage due to stagnation of solid waste and the like.
「発明の構成」 （問題点を解決するための手段） 埋設構造物に対し管路端部を接續するためのものであ
って、前記構造物に管路より大径とされた接續口を形成
し、該接續口内に管路端部を挿入せしめ、前記接續口と
管路端部との間に基端側をラッパ状に拡径させ、先端側
をリップ状挿入口とした筒状パッキングを介装し、前記
基端側に構造物の接續口内面と略平行した幅広部を形成
し、該幅広部に剛体による平板状支持リングを前記筒状
パッキング基端側の軸方向にそった方向として取付け、
該支持リングを介して上記接續口に充填凝結材により定
着し、前記したリップ状挿入口に挿入された管路端部を
上記支持リングの板面方向に突出すると共に彎曲せしめ
られた筒状パッキングの先端部において締結材により緊
締して連結したことを特徴とした構造物に対する管路の
地層変動吸收継手機構。(Constitution of the Invention) (Means for solving the problem) This is for connecting a pipe end to a buried structure, and a connection port having a larger diameter than the pipe is formed in the structure. Then, the pipe end is inserted into the connection port, the base end side is enlarged in a trumpet shape between the connection port and the pipe end, and the cylindrical packing having the tip side as the lip-shaped insertion port is provided. Interposed, a wide portion is formed on the base end side substantially parallel to the inner surface of the connection port of the structure, and a flat plate-like support ring made of a rigid body is formed on the wide portion along the axial direction of the cylindrical packing base end side. Installed as
A cylindrical packing which is fixed to the connection port with the filling coagulant via the support ring, and the end of the pipe inserted into the lip-shaped insertion port projects in the plate surface direction of the support ring and is curved. The structure of a pipe for absorbing geological fluctuations of a structure, wherein the joint is tightly connected with a fastening material at a tip end of the pipe.
（作用） 平板上支持リングにより充填凝結材を介し筒状パッキ
ングの拡径した基端側幅広部が構造物における接續口に
対し的確に定着され、また該幅広部に剛体による平板状
支持リングをその板面が前記筒状パッキング基端側の軸
方向にそった方向として取付けられたことにより充填凝
結材による取付けを強固とすると共にその幅広部および
筒状パッキング基端部の強度を有効に向上し、比較的短
小な筒状パッキングによって管路周面に対する適切なシ
ール関係を構成する。(Effect) The widened base end wide portion of the cylindrical packing of the tubular packing is precisely fixed to the connection port of the structure via the filler by the flat plate support ring, and a rigid flat support ring is attached to the wide portion. Since the plate surface is mounted along the axial direction of the cylindrical packing base end side, the mounting by the filler is strengthened, and the strength of the wide portion and the cylindrical packing base end is effectively improved. In addition, an appropriate sealing relationship with the pipe peripheral surface is formed by the relatively short and small cylindrical packing.
また前記筒状パッキングの先端部に形成されたリップ
状挿入口に対し接續すべき管路の先端部が挿入されて締
結材により緊締し接續されることによって該管路の先端
部は接續口内において上記のように比較的短かい筒状パ
ッキングを介しその全周方向において接續口内面から適
切に離隔した状態を採って連結され、強固安定な継手機
構を形成する。Further, the distal end of the pipeline to be connected to the lip-shaped insertion opening formed at the distal end of the cylindrical packing is inserted and tightened and connected by the fastening material, so that the distal end of the pipeline is in the connection opening. As described above, through a relatively short cylindrical packing, it is connected in a state where it is appropriately separated from the inner surface of the connection port in the entire circumferential direction, thereby forming a strong and stable joint mechanism.
上記のように構造における接續口内面から離隔浮上
し、且つ弾性作用をなすパッキングを介して接續された
管路は該構造物部分ないしその周辺における沈下または
***のような地層変動に際し構造物と管路との間の相対
的な変位を有効に吸收し、各部体における破損、亀裂発
生などを的確に防止することとなる。As described above, the pipeline which is separated from the inner surface of the connection opening of the structure and connected via the packing which performs elastic action is connected to the structure and the pipe in the case of a geological change such as subsidence or uplift in the structure portion or its periphery. This effectively absorbs the relative displacement between the road and the road, and appropriately prevents damage, cracks, and the like in each part.
（実施例） 本発明によるものの具体的な実施態様の全般的な構成
関係は、マンホールの場合において第１図に示す如くで
あり、マンホールのような構造物10の側壁に形成された
接續口101に別に第２図と第３図に仔細を示すようなゴ
ムまたは軟質合成樹脂材による基端側をラッパ状に拡径
させ、しかも幅広部14を形成した筒状パッキング１を設
け、該パッキング１の先端側に形成されたリップ状挿入
口12に管路８を挿入し、リップ状挿入口12にはバンド状
締結材４を施して締着する。又パッキング１の基端部に
は金属質または硬質合成樹脂材で成形された平板状支持
リング２の板面を該パッキング基端部の軸方向にそって
環設し、該支持リング２を前記接續口101に收容せし
め、支持リング２の内外にモルタルまたコンクリートそ
の他の充填凝結材３を充填固結して固定する。リップ状
挿入口12の内面には環状の突条11を形成して前記バンド
状締結材４による締着シールを完成する。締結材４によ
る緊締部は第３図に示すように凹溝13を形成して締結材
４が所定位置で締着されるようにすることが好ましく、
又支持リング２の取付部分である基端部はこの第２、３
図の実施態様の場合において構造物10における接續口10
1部分の厚さに略相当した突出量を有する幅広部14、14
を支持リング２の内外側に形成して充填凝結材３の密実
な充填を容易ならしめるように成っている。筒状パッキ
ング１の基端部ないしラッパ状に拡径された中間部は第
３図に仔細が示されているようにそれなりの厚みをもっ
たものとすることが好ましく、リップ状挿入口12を形成
する先端部については次第に薄層として前記凹溝13部分
に連續する。このリップ状挿入口12については好ましく
は適用すべき管路部体８に即応させたものとするが、場
合によってはリップ状挿入口12を拡径して挿入すること
ができる。(Embodiment) The general configuration of a specific embodiment according to the present invention is as shown in FIG. 1 in the case of a manhole, and a connection port 101 formed on a side wall of a structure 10 such as a manhole. In addition, a cylindrical packing 1 having a base end side made of rubber or a soft synthetic resin material as shown in detail in FIGS. The pipe line 8 is inserted into the lip-shaped insertion opening 12 formed on the distal end side of the device, and the band-shaped fastening material 4 is applied to the lip-shaped insertion opening 12 and fastened. At the base end of the packing 1, a plate surface of a flat support ring 2 formed of a metallic or hard synthetic resin material is provided along the axial direction of the base end of the packing, and the support ring 2 is attached to the base. It is stored in the connection port 101, and mortar, concrete or other filling coagulant 3 is filled inside and outside the support ring 2 and fixed. An annular ridge 11 is formed on the inner surface of the lip-shaped insertion opening 12 to complete a fastening seal using the band-shaped fastening member 4. It is preferable that the tightening portion of the fastening material 4 forms a concave groove 13 as shown in FIG. 3 so that the fastening material 4 is fastened at a predetermined position.
The base end, which is the mounting portion of the support ring 2, is the second or third
In the case of the embodiment shown, the connection port 10 in the structure 10
Wide portions 14, 14 having a protrusion amount approximately equivalent to the thickness of one portion
Are formed on the inner and outer sides of the support ring 2 so that the solidified filling of the filler 3 can be facilitated. It is preferable that the base end of the cylindrical packing 1 or the middle part expanded in a trumpet shape has a certain thickness as shown in detail in FIG. The tip to be formed is gradually connected to the concave groove 13 as a thin layer. Preferably, the lip-shaped insertion port 12 is adapted to the pipe body 8 to be applied. However, in some cases, the lip-shaped insertion port 12 can be inserted with an increased diameter.
締結材４としてこの実施態様の場合バンド状のものを
示したが、場合によっては線状材などを用い多数回に亘
って捲回し、全体としてバンド状締結材を用いた場合と
同様に仕上げてよいことは明らかである。第１図に示す
マンホールとしての構造物10は全体が土層100中に埋設
されているが、タンク、水槽のような構造物の場合はそ
の一部が地表上に露出されてよいことは当然である。In this embodiment, a band-shaped fastening material 4 is shown as the fastening material 4. However, in some cases, a wire-shaped material or the like is used and wound many times, and finished as in the case of using the band-shaped fastening material as a whole. The good is clear. Although the structure 10 as a manhole shown in FIG. 1 is entirely buried in the soil layer 100, in the case of a structure such as a tank or a water tank, part of the structure may naturally be exposed on the ground surface. It is.
適用されるべき構造物10が水槽、開渠、暗渠または角
型マンホールなどの接續口101形成部分が平坦面をなし
た場合には第３、４図に示したような構成が採られる。
即ち支持リング２は平板状のものとして形成され、これ
を平坦面に形成された接續口101に装着するものであ
る。In the case where the structure 10 to be applied has a flat surface in the portion where the connection port 101 is formed, such as a water tank, open channel, underdrain, or square manhole, the configuration shown in FIGS. 3 and 4 is adopted.
That is, the support ring 2 is formed as a flat plate, and is attached to the connection port 101 formed on a flat surface.
これに対し適用されるべき構造物10、特にその接續口
101部分が曲面をなした場合においては第５図に示すよ
うに平板状の支持リング２をそのまま適用し、あるいは
第６図に示すように板面が彎曲された支持リング２を採
用する。第５図の場合においては支持リング２が構造物
10の肉厚に対し内面側ないし外面側に偏って位置する部
分があることになるが、内面側または外面側への引抜き
力に対する全般としての支持抵抗は同じであり、特に曲
率の比較的小さい場合にはこのような平板状支持リング
２で充分である。又第６図のように彎曲した支持リング
２は一旦形成された平板状支持リングを彎曲成形し、或
いは合成樹脂材などで所定の曲率に彎曲させて形成さ
れ、比較的曲率の大きい場合においても安定した支持関
係が形成される。何れの場合においてもバンド状締結材
４は管体８に対して直交状（図示直線状）として締着さ
れ、的確な締着状態を形成する。なお第６図の場合にお
いて支持リング２を金属板で形成するに当っては曲率に
見合った長円状としたものを採用する。The structure 10 to which this applies, especially its connection
When the portion 101 has a curved surface, a flat support ring 2 is used as shown in FIG. 5 or a support ring 2 having a curved plate surface as shown in FIG. In the case of FIG. 5, the support ring 2 is a structure
There will be a part located on the inner side or the outer side with respect to the thickness of 10, but the overall supporting resistance to the pulling force to the inner side or the outer side is the same, especially the curvature is relatively small In such a case, such a flat support ring 2 is sufficient. Also, as shown in FIG. 6, the curved support ring 2 is formed by bending a once formed flat support ring or by bending it to a predetermined curvature with a synthetic resin material or the like, and even when the curvature is relatively large. A stable support relationship is formed. In any case, the band-shaped fastening member 4 is fastened to the tube 8 in an orthogonal shape (linear shape in the drawing) to form an accurate fastening state. In the case of FIG. 6, when the support ring 2 is formed of a metal plate, an oval shape corresponding to the curvature is employed.
「発明の効果」 以上説明したような本発明によるときはゴム質または
軟質合成樹脂材による挿入形式の筒状パッキングの基端
側に形成された幅広部に金属または硬質樹脂材製などで
あって筒状パッキング基端部の軸方向にそった方向を採
った平板状支持リングを取付けたものであるからコンク
リートまたは金属や合成樹脂などで形成された各種構造
物に対して充填凝結材により的確に取付けることがで
き、又このような筒状パッキング基端部が前記平板状支
持リングによって適当に補強して取付けられるので比較
的短小な筒状パッキングによっても適切に屈曲せしめた
シール構造を形成せしめ、該筒状パッキングの先端側に
リップ状挿入口を形成して管路端部を適切に挿着しこれ
をバンド状締結材その他の締着手段で的確な気密状態に
接續せしめることによって強固安定継手機構を取付け、
従って接續された構造物または管路が地層の沈下または
***により変動しても支持リング側を拡径した比較的短
小な筒状パッキングにより管路がその全周方向において
構造物の接續口に対して充分に離隔して支持接續された
ものとなって、前記変動による両部体間の変位を適正に
吸收しその何れにしても無理な応力を与えることがなく
損壊や亀裂発生などを生ぜしめることがないものであっ
て長期に亘って安定した連結支持関係を維持し、勾配を
採った管路構成中において固形汚物等の停滞閉塞する凹
入部を形成するようなことがないものであるから工業的
にその効果の大きい発明である。[Effect of the Invention] According to the present invention as described above, the wide portion formed on the base end side of the insertion type cylindrical packing made of rubber or soft synthetic resin material is made of metal or hard resin material. A flat support ring with the direction parallel to the axial direction of the base end of the cylindrical packing is attached, so that various structures made of concrete, metal, synthetic resin, etc. can be more accurately filled with coagulant. Since the base end portion of the tubular packing can be appropriately reinforced by the flat support ring, the sealing structure can be appropriately bent even by a relatively short tubular packing. A lip-shaped insertion opening is formed at the tip end of the cylindrical packing, the end of the pipe is appropriately inserted, and this is connected to a proper airtight state with a band-shaped fastening material or other fastening means. By tightening, a strong and stable joint mechanism is installed,
Therefore, even if the connected structure or pipeline fluctuates due to the subsidence or uplift of the stratum, the pipeline is relatively short and cylindrical packing whose diameter is enlarged on the side of the support ring so that the pipeline is connected to the connection port of the structure in the entire circumferential direction. The connection between the two parts is sufficiently absorbed and the displacement between the two bodies due to the fluctuation is properly absorbed, and in any case, no excessive stress is applied and damage or cracks are generated. It does not have a stable connection and support relationship over a long period of time, and does not form a recessed portion that stagnates and blocks solid waste etc. in a sloped pipeline configuration. This invention is industrially effective.
図面は本発明の技術的内容を示すものであって、第１図
は本発明によるものの施工例について全般的な関係を示
した部分切欠側面図、第２図はそのパッキングについて
の部分切欠側面図と部分的な正面図、第３図はその拡大
断面図、第４図は平坦面をなす構造物への設置状況を示
した部分切欠側面図、第５図と第６図はその構造物曲面
に対する設置状況を示した各断面図であって、夫々
（Ａ）は水平断面、（Ｂ）垂直断面を示すものである。 然してこれらの図面において、１はパッキング、２、2a
および20は支持リング、３は充填凝結材、４は締結材、
７は補助リング、８は管路、９は緊締子、10は構造物、
11は環状の突条、12はリップ状挿入口、13は凹溝、14は
幅広部、100は土層、101は接續口を示すものである。The drawings show the technical contents of the present invention. FIG. 1 is a partially cutaway side view showing the general relationship of an example of construction according to the present invention, and FIG. 2 is a partially cutout side view of the packing. And FIG. 3 is an enlarged cross-sectional view, FIG. 4 is a partially cutaway side view showing an installation state on a flat structure, and FIGS. 5 and 6 are curved surfaces of the structure. 5A and 5B are cross-sectional views showing the installation state of the apparatus, wherein (A) shows a horizontal section and (B) shows a vertical section, respectively. However, in these figures, 1 is the packing, 2, 2a
And 20 are support rings, 3 is a filler, 4 is a fastener,
7 is an auxiliary ring, 8 is a pipeline, 9 is a tightener, 10 is a structure,
Reference numeral 11 denotes an annular ridge, 12 denotes a lip-shaped insertion port, 13 denotes a concave groove, 14 denotes a wide portion, 100 denotes a soil layer, and 101 denotes a connection port.
Claims (1)
のものであって、前記構造物に管路より大径とされた接
續口を形成し、該接續口内に管路端部を挿入せしめ、前
記接續口と管路端部との間に基端側をラッパ状に拡径さ
せ、先端側をリップ状挿入口とした筒状パッキングを介
装し、前記基端側に構造物の接續口内面と略平行した幅
広部を形成し、該幅広部に剛体による平板状支持リング
を前記筒状パッキング基端側の軸方向にそった方向とし
て取付け、該支持リングを介して上記接續口に充填凝結
材により定着し、前記したリップ状挿入口に挿入された
管路端部を上記支持リングの板面方向に突出すると共に
彎曲せしめられた筒状パッキングの先端部において締結
材により緊締して連結したことを特徴とした構造物に対
する管路の地層変動吸收継手機構。1. A connection end for connecting a pipe end to a buried structure, wherein a connection port having a diameter larger than that of the pipe is formed in the structure, and the pipe end is provided in the connection port. The base end side is expanded in a trumpet shape between the connection port and the pipe end, and a cylindrical packing having a lip-shaped insertion port at the front end is interposed, and a structure is provided on the base end side. A wide portion substantially parallel to the inner surface of the connection port of the object is formed, and a flat support ring made of a rigid body is attached to the wide portion in a direction along the axial direction of the cylindrical packing base end side. The connecting port is fixed with a filling coagulant, and the pipe end inserted into the lip-shaped insertion port projects in the direction of the plate surface of the support ring and is fastened by a fastening material at the tip of the curved cylindrical packing. Geologic deformation of pipelines for structures characterized by tight connections. Absorption joint mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62053044A JP2571380B2 (en) | 1987-03-10 | 1987-03-10 | Geological change absorption joint mechanism of pipeline for structure. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62053044A JP2571380B2 (en) | 1987-03-10 | 1987-03-10 | Geological change absorption joint mechanism of pipeline for structure. |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8130629A Division JP2673277B2 (en) | 1996-04-30 | 1996-04-30 | Formation fluctuation absorption joint mechanism of pipeline for structure |
| JP8130630A Division JP2673278B2 (en) | 1996-04-30 | 1996-04-30 | Formation fluctuation absorption joint mechanism of pipeline for structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63219980A JPS63219980A (en) | 1988-09-13 |
| JP2571380B2 true JP2571380B2 (en) | 1997-01-16 |
Family
ID=12931882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62053044A Expired - Fee Related JP2571380B2 (en) | 1987-03-10 | 1987-03-10 | Geological change absorption joint mechanism of pipeline for structure. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571380B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074547U (en) * | 1993-06-25 | 1995-01-24 | 高圧コンクリート工業株式会社 | (With diameter expansion fitting) Flexible rubber joint |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6135830Y2 (en) * | 1978-02-17 | 1986-10-17 | ||
| JPS5742984Y2 (en) * | 1978-09-26 | 1982-09-22 |
-
1987
- 1987-03-10 JP JP62053044A patent/JP2571380B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63219980A (en) | 1988-09-13 |
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