WO1980000182A1 - Appareil et methode d'assemblage de conduites preformees - Google Patents

Appareil et methode d'assemblage de conduites preformees Download PDF

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Publication number
WO1980000182A1
WO1980000182A1 PCT/US1979/000474 US7900474W WO8000182A1 WO 1980000182 A1 WO1980000182 A1 WO 1980000182A1 US 7900474 W US7900474 W US 7900474W WO 8000182 A1 WO8000182 A1 WO 8000182A1
Authority
WO
WIPO (PCT)
Prior art keywords
preformed
conduits
longitudinal ends
gasket
longitudinal
Prior art date
Application number
PCT/US1979/000474
Other languages
English (en)
Inventor
M Sammaritano
Original Assignee
M Sammaritano
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 M Sammaritano filed Critical M Sammaritano
Publication of WO1980000182A1 publication Critical patent/WO1980000182A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

Definitions

  • This invention relates to a duct bank assembly, and more particularly to an arrangement for joining the longitudinal ends of preformed concrete conduits having pipes therein in which electrical cables and the like are installed.
  • applicant's invention relates to a method and apparatus for joining the. longitudinal ends of preformed conduits wherein a slight angle may be provided between the longitudinal axes of the joined conduit so that by providing such an angle, it is possible to provide a curve in the duct bank assembly.
  • appli ⁇ cant's joint is such that if settling of the soil should occur at a subsequent date, applicant's joint permits a shifting in the longitudinal alignment of adjacent pre ⁇ formed conduits such that such shifting would not impair the water tightness of the joint or otherwise impair the mechanical integrity of the joint. Accordingly, with this arrangement, subsequent settling of the soil would not adversely affect the duct bank assembly.
  • Another object of applicant's invention is to provide a joint for preformed conduits wherein a curvatu may be built into the duct bank assembly.
  • Another object of applicant's invention is to provide for subsequent settlement of the soil underneath the duct bank so that the duct bank can adapt to the settlement of the soil and obtain a curvature therein without impairing the integrity of the joints in the preformed conduits.
  • Fig. 1 is an elevational view of a duct bank assembly in which a plurality of preformed conduits are assembled end-to-end.
  • Fig. 2 is a perspective view of a single pre ⁇ formed conduit used in the duct bank -assembly of Fig, 1
  • Fig. 3 is an elevational view, partly broken away and on a larger scale, showing the connection between two preformed conduits.
  • Fig. 4 is a sectional view of the flexible and resilient gasket circumscribing the joint between the two preformed conduits.
  • Fig. 5 is an elevational view, partly broken away and in sanction of the expansion-type bolt used in connecting the preformed conduits.
  • O Fig. 6 is an end view of the expansion-type bolt of Fig. 5 and looking from the right-hand side of Fig. 5.
  • Fig. 7 is a partial elevational view in section showing the joint between two preformed con- duits wherein the longitudinal axes of the two preform ⁇ ed conduits are slightly out of alignment.
  • Fig. 8 is a partial sectional view, on a larger scale, showing the left-hand portion of the upper expansion bolt of Fig. 7.
  • Fig. 9 is a partial sectional view, on a larger scale, showing the left-hand portion of the lower- expansion bolt of Fig. 7.
  • Fig. 10 is an elevational view illustrating the assembly of the joints between two preformed conduits and showing the water-proof gasket being assembled around the joint.
  • Fig. 11 is a view similar to Fig. 10 showing the water-proof gasket in place and showing the in ⁇ stallation of the band strap.
  • Fig. 12 is- a view similar to Fig. 11 showing the band strap tightening apparatus.
  • Fig. 13 is a sectional view ' taken along the line 13-13 in Fig. 12 showing the band strap tightening apparatus.
  • Fig. 14 is a view showing the gauges in position between two preformed conduits being joined.
  • Fig. 15 is a perspective view of the two gauges shown in Fig. 14. DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Fig. 1 shows a plurality of preformed conduits, each preformed conduit being desig ⁇ nated generally by the numeral 10.
  • the preformed conduits are joined to one another at their longitudinal ends to form a continuous conduit.
  • the conduit sections i ⁇ may be used in various applications where it is desired to lay underground cables or wires. They may be used, for example, for cross-country installation of cables, at airports for carrying electrical wires and cables to various buildings, communication centers, flight control locations, and any other locations where electrical cables are used.
  • the water-tight and mechanical joints between the preformed conduits provide for such curvature in the duct bank assembly while maintaining the integrity of the mechanical connection and the water tightness.
  • Fig. 1 shown, for example, a new grade in a duct bank due to settlement induced by disturbed soil and new loads. Accordingly, each joint will move a little but the water-tight seal or integrity of the joint will not be impaired as will be described.
  • a twelve inch vertical displacement will have a negligible effect on the compression of the gasket used between the preformed conduit sections. Any further compression of the gasket serves to further enhance the water ⁇ tight integrity.
  • the preformed conduits can be horizontally or vertically shifted to easily achieve direction changes of large radii without effecting the water-tight integrity of the joints. This permits maneuverability of the duct bank system at the time of installation and eliminates field design changes.
  • the enhanced flexibility of the pre ⁇ cast or preformed conduit sections help to overcome ground effects such as seismic movements which cannot be predicted.
  • Fig. 2 showns a preformed conduit made of concrete or the like and which includes a plurality of pipes 12 (six are shown in Fig. 2, although any number may be used) which extend .parallel to one another but which are spaced from one another so that each pipe 12 is completely surrounded by the concrete.
  • the pipes 12 may be made of fiberglass, plastic, fibrous compounds, metal or other suitable materials.
  • the cross-section of the preformed conduits 10 may be circu ⁇ lar or take on other configurations.
  • the longitudinal ends of the preformed con- duits include a circumscribing indentation 14 as shown in the right-hand portion of Fig. 2.
  • Fig. 3 standard conduit couplings 11 may be provided between the conduit-elements. Also, in Fig. 3, there is shown an arrangement wherein one end of one of the preformed conduits 10 is connected to a manhole. Thus, the manhole wall is indicated at 13 and a motar joint 15 may be provided between the manhole wall and the preformed conduit. Also ' , the ends of the pipes 12 may be formed with an end bell 17 termination or a metal bushing 19.
  • the preformed conduits may be provided with pulling and lifting eyes 21 by which lifting equipment may be engaged or hooked to the preformed conduit enabling it to be lifted in place.
  • the pulling and lifting eyes 21 are utilized to pull one conduit longitudinally up to the other conduit to form the joint as will be further described, and in such a case, a pulling hoist (not shown) may be connect ⁇ ed between the pulling and lifting eyes 21 of a longitudinally juxtaposed preformed conduits to be joined.
  • Fig. 7 illustrates two conduit sections which are joined together at their longitudinal ends by expansion anchor bolts 16, 18 and by the resilient and water-tight gasket 19. As shown in Fig.
  • the expansion anchor bolt 16 is double ended in that both longitudinal ends are substantially the same. Both longitudinal ends of the expansion bolt 16 have outer circumscribing grooves 20 to facilitate anchoring the expansion bolt in the preformed conduit. In addition, both longitudinal ends of the expansion bolt are provided with longitudinal slots 22, which facilitate expansion of such longitudinal ends.
  • the expansion bolts may be made of hardened steel and galvanized. A standard joint may have 6 to 8 bolts according to the desired configuration, although only two are described herein.
  • both ends of the expansion bolt 16 are provided with tapered plug members 24, whereby it will be seen that as the plug members 24 are further inserted in openings 26 in the end of the expansion bolt, that the end of the expansion bolt will expand to tighten or grip the walls of the opening in the concrete in which the expansion bolt is installed.
  • the double ended anchor bolts 16, 18 are installed so that approximately one- half of each extends into an elongated hole 28 (or 30) in one longitudinal end of one preformed conduit and the other half extends into an opening 29 (or 31) in the longitudinal end of the other preformed conduit.
  • the anchor bolt is inserted into the holes 38, 30 in the longitudinal end of onepreformed conduits and driven home by hammering in place or the like and then the other preformed conduit is slid into place so that the holes 29, 31 in the other conduit are aligned with the expansion bolts and thereby receive the anchor bolts therein.
  • the flexible and water-tight gasket 19 Prior to assembly of the joint, the flexible and water-tight gasket 19 is placed in position around the periphery of the joint as shown in Fig. 7.
  • FIG. 10 two preformed conduits are being joined together.
  • the expansion bolts 16, 18 are in place and the preformed conduits are pulled together to within a predetermined spaced distance, for example, six inches.
  • a plate or slab member 32 may be provided underneath the joint to facilitate assembly. However, the member 32 is not a part of the joint.
  • the resilient gaskets 19, which may be elongate form, is wrapped around the joint, that is around the perimeter of the indentations 14 of the preformed conduits. The ends of the gasket 19 mate along at a diagonal 34 (Fig.
  • the preformed conduits are then further pulled together to a closer predetermined distance, for example, four and a half inches.
  • suitable sealing material such as epoxy may be applied to the gasket joints.
  • a conventional band strapping apparatus 36 is provided around the gasket 19 and tightened until the gasket ends meet along the diagonal 34 and shown in Fig. 13.
  • Fig. 13 shows the tight ⁇ ening of the gasket 19 by the band strapping apparatus 36 with the band 36a of the band strapping apparatus 36 being accommodated in a groove 40 in the gasket.
  • the gasket 19 may be made of a flexible poly- vinyl chloride and the splice may be joined by epoxy 0 cement. Ribs 40a may be provided on the gasket to facilitate the sealing effect.
  • the gasket band 34a is made of a plastic and serves to compress the water ⁇ tight gasket 19 into position and hold the splice 34 in a position until it is secured. Thereafter, it is
  • the upper gauge 43 includes provision for establishing four different spacings between one portion of the preformed conduits being joined.
  • the gauge 43 includes eight projections 50, 52, 54, 56, 58, 60, 62, 64 with the distances between the pairs of ⁇ - projections being different for each of the four sides of the gauge.
  • Fig. 14 shows the gauge in place during assembly of the joint wherein the gauge is utilized so that the projections are engaged by the peripheral ends of the two conduits to be assembled. By utilizing this gauge, the distance between the two conduits is
  • the gauge 42 is removed and thus is only used temporarily to establish the spacing. If a different spacing is used, then the gauge may be turned 90 degrees either way or 180 degrees and the spacing between the other projection would be utilized to establish a different spacing.
  • the spacing between projections 50 and 52 is different from the spacing between projections 54 and 56 which is different from the spacing between projections 58 and 60 which again is different from the spacing between projections 62 and 64.
  • a second gauge 44 is used at the bottom.
  • this gauge 44 only has one predetermine distance established by the distance between the pro ⁇ jections 66, 68.
  • spacing between the peripheral ends of the performed conduits at the bottom is always the same (equal to the distance between projections 66 and 68) while the spacing at the top (e.g., d]_ in Fig. 8) thereof may be varied depending on which, portion of the gauge 42 is utilized. If there is to be no angle between the conduits, then the spacing established by the gauges will be the same at the top and bottom. However, if a slight angle is desired, a different portion of the upper gauge will be used, thereby providing a different spacing between different portions of tbe longitudinal ends of the preformed conduits resulting in a slight; angle between the longitudinal axes of the joined preformed conduits.
  • the gauge 44 establishes a predetermined distance (e.g. d2 in Fig. 9) between the longitudinal ends of the preformed conduits.
  • This predetermined distance is such as to provide the necessary compression to the gasket 19 to insure the water-tight seal and at the same time, to provide the necessary expansion of the anchor bolt to insure that they are set and held firmly in the concrete.
  • Fig. 9 shows the setting of the expansion bolt 18 wherein the plug 25 is not all the way bottomed in the hole 27 as indicated by the distance d2, but at the same time, the plug 25 is sufficiently inserted in the taper ⁇ ed hole 27 to expand the expansion bolt 16 to provide a firm anchoring.
  • the plug 24 of the other expansion bolt 16 will be driven in a little further in the tapered hole 26 and the gasket 19 will be compressed a little bit more as shown in Fig. 8 and in the upper portion of Fig. 7.
  • d ⁇ in Fig. 8 is less than d2 in Fig. 9.
  • the gauge 42 may be utilized to establish the setting of the expansion bolt 18 in the lower portion of the conduit as shown in Fig. 9 and the gauge 42 can be used to establish the setting of the expansion bolt 16 as shown in Fig. 8, thereby providing the slight angle between the joined preformed conduits.
  • OMPI - WIPO insure a water-tight seal and to provide the setting and securement of the expansion bolt 18. Furthermore, the further compression of the gasket 19 and the further driving or setting of the plug 24 in expansion bolt 16 in the upper portion of Fig. 8 also insures the proper mechanical and water-tight seal of the joint.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

Un appareil d'assemblage de conduites pour relier les extremites longitudinales de conduites en beton preforme (10) ayant des tubes (12) a l'interieur dans lesquels sont installes des cables electriques et autres. Les conduites preformees sont placees dans une tranchee sous le niveau normal du sol et leurs extremites longitudinales sont jointes les unes aux autres en utilisant une pluralite de boulons de scellement (16) disposes dans des trous allonges (30, 31) dans les extremites des conduites. Un joint (19) est monte entre les extremites des conduites preformees pour en assurer l'etancheite a l'eau. En raison du tassement du sol, certaines conduites peuvent s'enfoncer plus que d'autres et former une courbure qui pourrait provoquer l'ouverture des extremites des conduites et par la meme affecter l'integrite du joint d'etancheite ou meme endommager la connection mecanique entre les extremites des conduites. L'appareil d'assemblage de l'invention permet un leger angle entre les axes longitudinaux des conduites jointes permettant ainsi une courbure dans l'assemblage des conduites sans endommager l'integrite des joints entre celles-ci.
PCT/US1979/000474 1978-07-03 1979-07-02 Appareil et methode d'assemblage de conduites preformees WO1980000182A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92162378A 1978-07-03 1978-07-03
US921623 1978-07-03

Publications (1)

Publication Number Publication Date
WO1980000182A1 true WO1980000182A1 (fr) 1980-02-07

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Application Number Title Priority Date Filing Date
PCT/US1979/000474 WO1980000182A1 (fr) 1978-07-03 1979-07-02 Appareil et methode d'assemblage de conduites preformees

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777470A (zh) * 2018-08-22 2018-11-09 建华建材（中国）有限公司 一种电缆排管及其施工方法
CN108832563A (zh) * 2018-08-30 2018-11-16 建华建材（中国）有限公司 一种预制电缆排管及其施工方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB816559A (en) * 1957-10-25 1959-07-15 Hans Ziller Wedge ring for pipe lines
US3177015A (en) * 1962-01-24 1965-04-06 Brown Co D S Pipe coupling of sponge elastomer
US3202035A (en) * 1961-04-28 1965-08-24 Sarmi S A Soc D Applic De Rech Self-boring wall-plugs
US3334928A (en) * 1965-03-10 1967-08-08 John D Schmunk Pipe coupling
US3438659A (en) * 1967-05-15 1969-04-15 Howard Lawrence Waldron Dowel type fastener with shear collar
US3439945A (en) * 1965-05-26 1969-04-22 Shamban & Co W S Pipe joint seal and method
US3492715A (en) * 1967-01-16 1970-02-03 Crestshore Eng Ltd Gauge for measuring pipework
US3729939A (en) * 1970-09-10 1973-05-01 S Shimizu Device for sealing water at coupling portion of tunnel tubes
US3873134A (en) * 1973-01-04 1975-03-25 Michael Sammaritano Apparatus for joining preformed conduits
US4027902A (en) * 1975-03-27 1977-06-07 Seibu Polymer Kasei Kabushiki Kaisha Joint for culvert sections and the like

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB816559A (en) * 1957-10-25 1959-07-15 Hans Ziller Wedge ring for pipe lines
US3202035A (en) * 1961-04-28 1965-08-24 Sarmi S A Soc D Applic De Rech Self-boring wall-plugs
US3177015A (en) * 1962-01-24 1965-04-06 Brown Co D S Pipe coupling of sponge elastomer
US3334928A (en) * 1965-03-10 1967-08-08 John D Schmunk Pipe coupling
US3439945A (en) * 1965-05-26 1969-04-22 Shamban & Co W S Pipe joint seal and method
US3492715A (en) * 1967-01-16 1970-02-03 Crestshore Eng Ltd Gauge for measuring pipework
US3438659A (en) * 1967-05-15 1969-04-15 Howard Lawrence Waldron Dowel type fastener with shear collar
US3729939A (en) * 1970-09-10 1973-05-01 S Shimizu Device for sealing water at coupling portion of tunnel tubes
US3873134A (en) * 1973-01-04 1975-03-25 Michael Sammaritano Apparatus for joining preformed conduits
US4027902A (en) * 1975-03-27 1977-06-07 Seibu Polymer Kasei Kabushiki Kaisha Joint for culvert sections and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777470A (zh) * 2018-08-22 2018-11-09 建华建材（中国）有限公司 一种电缆排管及其施工方法
CN108832563A (zh) * 2018-08-30 2018-11-16 建华建材（中国）有限公司 一种预制电缆排管及其施工方法

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