WO2018069847A1 - Revêtement de conduit en arc et procédé d'installation - Google Patents

Revêtement de conduit en arc et procédé d'installation Download PDF

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Publication number
WO2018069847A1
WO2018069847A1 PCT/IB2017/056288 IB2017056288W WO2018069847A1 WO 2018069847 A1 WO2018069847 A1 WO 2018069847A1 IB 2017056288 W IB2017056288 W IB 2017056288W WO 2018069847 A1 WO2018069847 A1 WO 2018069847A1
Authority
WO
WIPO (PCT)
Prior art keywords
host pipe
repair
repair sleeve
segments
sleeve
Prior art date
Application number
PCT/IB2017/056288
Other languages
English (en)
Inventor
Lembit Maimets
Original Assignee
Lembit Maimets
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 Lembit Maimets filed Critical Lembit Maimets
Publication of WO2018069847A1 publication Critical patent/WO2018069847A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
    • E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe

Definitions

  • the invention relates to apparatuses and methods for repairing conduits, tunnels, culverts, and other like structures that have been damaged, weakened, or that have begun leaking, such as leaking water or other liquid or effluent.
  • the invention more particularly relates to such apparatuses and methods for repairing such aforementioned structures that are located underground, without necessitating excavation of the surrounding terrain.
  • the structures to be repaired can have a variety of cross sections, including round or non-round.
  • the invention is particularly suitable for structures having an arch shape.
  • Conduits, tunnels, and culverts can become damaged or weakened for various reasons, which require periodic repair or rehabilitation.
  • railways are built to follow horizontal contours of the landscape. Crossing moderately deep ravines, earthen dams have been built to maintain the track horizontal. These dams intersect natural waterways requiring culverts to allow the streams to pass.
  • Many railways were built more than a century ago and culverts have been subjected to heavy vibrating loads.
  • reinforced concrete walls of these culverts have undergone considerable water erosion rendering them structurally weakened and often unsafe.
  • U.S. Patent RE30,929 discloses a collapsible liner, in the form of a number of arcuate hinged segments that form a collapsed closed loop that is transported into the tunnel or conduit and, when positioned at the site of the repair, the collapsed closed loop is expanded by one or more inflatable air bags until it achieves its final erect installed closed-loop form. In the final form, an annular gap between the liner and the host pipe for receiving grout.
  • the closed-loop form of the installed liner is locked in place as the pair of hinged-together liner segments 24-2 and 24-3 and the pair of hinged-together liner segments 24-6 and 24-7 are expanded outwardly toward the inner wall of the host pipe being repaired, as the air bags are inflated and the liner is moved to its final stable form.
  • either or both of the pair of hinged liner segments, forming an overcenter mechanism can be regarded as a liner locking device.
  • the liner is sized so that, in its final installed form, an adequate space between the liner and the host pipe is provided for grout.
  • U.S. Patent Application Publication 2014/0007968 discloses another multi-segment liner apparatus and method that includes embodiments suitable for the repair of conduits and other like structures.
  • the liner which is also referred to as a repair sleeve or core, is used for repairing a host pipe having what is referred to as a horseshoe cross section.
  • the liner, or sleeve includes a pair of hinged crown segments, or flaps, in the area of the top arch region, an invert segment at the bottom of the host pipe, and a pair of oppositely opposed lateral segments, the bottoms of the latter segments to be positioned in respective ones of upwardly facing grooves in the invert segments.
  • the pair of hinged crown segments are positioned against the host pipe and either or both of the lateral segments can be considered as the liner locking device, as each is forced laterally to be fitted within its respective groove as the liner is moved to its final stable form.
  • the pair of lateral segments are positioned proximate the inner sides of the host pipe, fitted in their respective grooves, and the two hinged crown segments can be regarded as the liner locking device, similar to the liner of US '929. That is, in the arch area of US '968, to move the liner to its final stable form, the hinged crown segments are forced outwardly toward the inner surface of the host pipe.
  • resilient rings are placed around the outer surface of the sleeve, where they are compressed between the sleeve and the host pipe and where they also provide a gap between the sleeve and the host pipe to receive grout.
  • the invention is directed to apparatuses and methods for internal repair of conduits, tunnels, culverts, and other like structures, generally referred to herein as a conduit or a host pipe, for convenience.
  • the apparatus includes a repair sleeve configured to be moved from a pre-installed configuration to a stable installed configuration, the repair sleeve forming a closed circumferential loop in the installed configuration, which can line a bottom, a top, and a pair of opposite lateral portions of the host pipe.
  • the repair sleeve includes a plurality of segments configured to line the inner peripheral and lengthwise surfaces of the host pipe, wherein, for an exemplary embodiment, the host pipe comprises a bottom region, a top region, and right and left lateral regions, and wherein the plurality of segments of the sleeve include at least a bottom segment to be positioned above the bottom region of the host pipe in the installed configuration, a right lateral segment to extend upwardly from the bottom region of the host pipe along the right lateral region of the host pipe in the installed configuration, and a left lateral segment to extend upwardly from the bottom region of the host pipe along the left lateral region of the host pipe in the installed configuration.
  • the repair sleeve also includes a locking mechanism configured to lock the repair sleeve in the stable installed configuration while allowing a gap between an outer surface of the repair sleeve and an inner surface of the host pipe.
  • the locking mechanism In the installed configuration of the sleeve, the locking mechanism is positioned within the annular gap between the sleeve and the host pipe.
  • the locking mechanism comprises at least two or more wedges that are spaced apart around a periphery of the sleeve in the gap. Once installed, the wedges add compressive forces against the parts of the sleeve as a grout or other binding agent, cementitious or chemical, for example, cures in the gap between the sleeve and the host pipe.
  • a plurality of such repair liners can be successively positioned and installed lengthwise along the host pipe in an abutting relationship, for example, the number depending upon the size of the repair, although the liners can be joined together by any convenient means, such as with interlocking structures or with an elastic band surrounding the end regions of adjacent liners.
  • the aforementioned wedges constituting a locking device for each of the liners, secure the liners in place until the binding agent has cured, whereby the binding agent creates the composite structure consisting of the liner, the binding agent, and the existing deteriorated walls of the host pipe.
  • the liner material can be chosen to enhance the hydraulic properties of the relined conduit by being made of rigid PVC, or other water rejecting material.
  • the invention also includes a method of installation of a repair sleeve of the invention within a conduit or host pipe.
  • FIG. 1 is a transverse cross-sectional view of a conduit in need of repair, showing bottom components of an apparatus of a first embodiment of the invention with the repair sleeve in a pre-installation configuration, including a bottom segment of a repair sleeve according to the invention, which is to be completed and installed within the conduit;
  • FIG. 2 is a view similar to that of FIG. 1 with a left lateral segment having an end positioned within a groove of the bottom segment, with an arrow showing that the left lateral segment is to be tilted about its end toward the left lateral surface of the conduit;
  • FIG. 3 is a view similar to that of FIG. 2 with a right lateral segment having an end positioned within another groove of the bottom segment, with an arrow showing that the right lateral segment is to be tilted about its end toward the right lateral surface of the conduit;
  • FIG. 4 is a view similar to that of FIG. 3 with both the left and right lateral segments of the repair sleeve positioned proximate the left and right lateral surfaces of the conduit, the repair sleeve forming a closed circumferential loop while being in an intermediate configuration, without grout yet injected between the repair sleeve and the conduit;
  • FIG. 5 shows the repair sleeve in the installed configuration, and with grout having been injected in a gap surrounding the repair sleeve, the gap having a width defined by the inner surfaces of the conduit, with top and bottom wedges creating the gap;
  • FIG. 6 is longitudinal cross-sectional view taken along the lines VI-VI of FIG. 5; and • FIGS. 7-12, which correspond respectively to FIGS. 1-6, show a second embodiment of an apparatus of the invention in which a metallic mesh has been installed against the walls of the conduit prior to the assembly of the sleeve segments shown in FIGS. 1-6.
  • a conduit or host pipe to be repaired according to apparatus and methods of the invention can extend horizontally, vertically, near vertical, along an incline, and otherwise.
  • annular and circumferential are used for convenience, such as in connection with a repair sleeve and a gap between a repair sleeve and a host pipe, but the terms are not to limit such repair sleeve and host pipe or portions thereof are circular or partially circular in cross section, for example.
  • FIGS. 1-6 illustrate a non-limiting first embodiment of an apparatus within the scope of the invention. More particularly, the drawing figures show an exemplary step-by-step method of assembling various segments of a repair sleeve of the apparatus of the invention within a damaged, weakened, and/or leaking conduit 6, herein also referred to as a the pipe.
  • the host pipe can have any height, but the invention is particularly useful for pipes having heights that allow access to personnel for installing the various components of the apparatus of the invention to line the host pipe. For example, such heights can be within a range of at least 5-12 feet.
  • the bottom of the host pipe 6 is shown to have an arcuate upwardly concave shape, the invention can be practiced with flat or other bottom shapes.
  • FIGS. 5 and 6 illustrate the repair sleeve in an installed configuration, in which a grout 10 has been injected through grout ports 9 into a gap between the host pipe and the outer surfaces of the segments 3, 7, and 8 of the repair sleeve, of which the segments can also be referred to as flaps. That is, in the installed configuration of the illustrated first embodiment, the repair sleeve includes a bottom segment 3, a left segment 7, and a right segment 8.
  • FIGS. 1-4 illustrate, in a step-by-step manner, a successive positioning of the segments from a pre-installation configuration to an intermediate configuration (that is, with grout not yet injected into the gap), the latter showing the segments forming a closed circumferential loop.
  • the longitudinal cross-sectional view of FIG. 6 shows an exemplary relative length of the repair sleeve.
  • the length can be of any conventional or convenient dimension and can be chosen for ease of handling by the installation crew and, for example, the weight of the materials used for the segments. For example, if the height of the completed repair sleeve were to be five feet, the length of the repair sleeve from upstream end to downstream end could be two, four, or six feet. But any convenient dimensions are possible. Depending upon the length of the damaged, weakened, or leaking region of the host pipe, two or more successive repair sleeves can be installed.
  • the material of the sleeve that is, the material used for the sleeve segments, can be polyvinyl chloride (PVC), although the choice of material is determined by the chemical regime in the host pipe. Alternatively, corrugated or galvanized metal, for example, could be used.
  • the thickness of the sleeve segments can be any dimension taking into account the resulting weight of the segments as they are transported and installed. As an example for PVC, the thickness can be within a range of 0.625 inches to 1.50 inches, although other thicknesses are within the scope of the invention.
  • the choice of thickness of the sleeve segments is determined by the dimensions and external loads applied to the host pipe. [0022] In FIG.
  • the bottom segment 3 has been positioned at the bottom region of the host pipe 6, but is spaced from the host pipe by means of at least one wedge 4.
  • at least one additional wedge 4 is positioned above the respective abutting edges of the right and left segments 7 and 8, the two wedges thereby defining a gap surrounding the repair sleeve, the gap additionally defined by the inner surfaces of the host pipe.
  • the wedges can be made of wood or plastic, for example, or other relatively hard or rigid material that can maintain a spacing between the repair sleeve and the host pipe and maintain the spacing during the injection and curing of the binding material.
  • the wedges can have a width that maintains a two-inch gap, although the width of the gap can be of any suitable size that provides sufficient rigidity for the final composite structure once the grout or other binding agent is cured within the gap.
  • the gap could have a width within the range of 1-5 inches.
  • the bottom components include elastomeric, or otherwise resilient, pads 1 and 2 beneath respective ones of the left and right end regions of the bottom segment 3. More particularly, in the illustrated embodiment, each of the pads is located beneath an upwardly facing groove 5 that receives an end, that is, a bottom edge, of a lateral segment 7 or 8, as explained below.
  • the pads are shown to have a circular cross section, other shapes are possible, such as rectangular or otherwise.
  • the pads 1, 2 can have a length the same as the length of the wedges 4 (see FIG. 6, for example), although other lengths are possible so as to perform their function of supporting the lateral segments and providing a resilient force against the ends of the lateral segments.
  • the left lateral segment 7 of the repair sleeve is manually installed, although possibly with the assistance of a mechanical or hydraulic device, by having an end positioned, and thereby locked, within the groove 5 of the bottom segment, and then tilting the segment 7 (indicated by the arrow in FIG. 2) hinge-like toward the left lateral surface of the host pipe 1.
  • the segment 7 can be temporarily held or braced in place manually or with the use of a mechanical or hydraulic device.
  • the right lateral segment 8 of the repair sleeve is installed by positioning, and thereby locking, its bottom end within the groove 5 on the right of the bottom segment 3, and then tilting the right lateral segment 8 (indicated by the arrow in FIG. 3) hinge-like toward the right lateral surface of the host pipe 1.
  • the right lateral segment 8 can be installed before the left lateral segment, or both lateral segments can be installed at the same time.
  • each of the lateral segments can be raised/tilted by a respective worker either manually or with the assistance of a mechanical or hydraulic device.
  • both of the lateral edges are raised in place as shown in FIG. 4, their respective upper ends, or lengthwise-extending edges, are in abutment.
  • the ends, or edges can be flat or the two ends or edges of the lateral segments can have a shiplap engagement or other engagement.
  • grooves 5 are illustrated in the exemplary embodiment the ends of the lateral segments 7, 8 could alternatively be locked in place, such as to prevent sliding of the bottoms of the sleeve segments, by means of fasteners or other securing devices.
  • a wedge 4 is forced into place above the abutting ends as shown in FIGS. 5 and 6, such as by hammering.
  • the closed loop of the segments has a sufficient resiliency to accept the wedge to firm up its rigidity in the installed configuration prior to receiving the grout in the gap. That is, as the upper wedge 4 is so installed, the lateral segments 7 and 8 are compressed downwardly thereby compressing the resilient pads 1 and 2, and thereby creating a locking force to fix the repair sleeve in a closed loop configuration, that is, in the installed configuration of the repair sleeve, as shown in FIGS. 5 and 6.
  • a grout or other binding agent 10 cementitious or chemical, for example, is injected through the ports 9 into the gap between the repair sleeve and the host pipe, as shown in FIGS. 5 and 6, where it cures in place and thereby increases the rigidity and structural strength of the repair sleeve, or that of any lengthwise succession of repair sleeves that might have been created, as mentioned above, depending upon the size of the repair.
  • each of the lateral segments 7, 8 are shown as one-piece segments, the invention encompasses a repair sleeve in which either or each of the lateral surfaces of the host pipe could be lined with a multi-link lateral segment.
  • Such repair sleeve might be useful if the height of the host pipe might make the installation easier.
  • Adjacent links of such multi-link segment can be joined by hinges, such as flexible hinges shown and described in the aforementioned US RE30929 (see hinges 28-1 to 28-8, for example), each of which can be an elastomer or metal strip glued or otherwise secured to the ends of adjacent links.
  • hinges such as flexible hinges shown and described in the aforementioned US RE30929 (see hinges 28-1 to 28-8, for example), each of which can be an elastomer or metal strip glued or otherwise secured to the ends of adjacent links.
  • the disclosure of US RE30929 is hereby incorporated by reference thereto in its entirety and particularly for this purpose.
  • a wedge 4 would
  • FIGS. 7-12 which correspond respectively to FIGS. 1-6, show a second embodiment of an apparatus of the invention in which a reinforcing layer 11, such as a welded metallic mesh, is installed against the walls of the conduit prior to the assembly of the sleeve segments shown in FIGS. 1-6 to increase the strength of the repair sleeve.
  • a reinforcing layer 11 such as a welded metallic mesh
  • Other materials can also be used, as mentioned above with regard to the material of the sleeve segments.
  • the reinforcing layer 11 is installed before the segments 3, 7, 8 are assembled, as is evident from FIGS. 7-9. After the reinforcing layer is installed, the same procedure is then applied for the construction and installation of the repair sleeve for the embodiment of FIGS. 7-12.
  • the invention is disclosed herein in a manner that enables one to make and use it, by virtue of the disclosure of particular exemplary embodiments, such as for simplicity or efficiency, for example, the invention can be practiced in the absence of any additional element or structure that is not specifically disclosed herein.
  • the locking device in the form of a plurality of wedges creating a gap between the repair sleeve and the host pipe
  • elastic rings or other structure such as necessitated by the sleeve of US '968 are not needed to encircle the repair sleeve of the invention to create a gap for receiving grout between the repair sleeve and the host pipe.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne un appareil et un procédé de réparation d'un élément quelconque parmi des conduits, des tunnels, des galeries et d'autres structures similaires, désignés comme tuyau hôte, ayant été endommagés, affaiblis ou ayant commencé à fuir. Un manchon de réparation selon l'invention est constitué d'un certain nombre de segments qui forment une boucle à l'intérieur d'un tuyau hôte qui est verrouillé dans une configuration d'installation par rapport au tuyau hôte, laissant un espace périphérique de sorte qu'un agent de liaison ou un coulis crée une structure composite avec le manchon de réparation et le tuyau hôte. De plus, au moins deux coins se trouvent à l'intérieur de l'espace périphérique, le second coin parmi les deux coins agissant, par exemple, en tant que mécanisme de verrouillage qui fixe le manchon de réparation dans la configuration installée avant l'ajout de l'agent de liaison.
PCT/IB2017/056288 2016-10-12 2017-10-11 Revêtement de conduit en arc et procédé d'installation WO2018069847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662407317P 2016-10-12 2016-10-12
US62/407,317 2016-10-12

Publications (1)

Publication Number Publication Date
WO2018069847A1 true WO2018069847A1 (fr) 2018-04-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112050021A (zh) * 2020-09-22 2020-12-08 中铁十八局集团有限公司 一种jpccp管的现场修复方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036916A1 (fr) * 1999-03-15 2000-09-20 Channeline Sewer Systems Limited Revêtement pour canalisations d'égouts
US8327886B2 (en) * 2006-12-19 2012-12-11 Ashimori Industry Co., Ltd. Conduit repair structure
US20140007968A1 (en) * 2012-07-05 2014-01-09 Lembit Maimets Apparatus and method for internal repair of round and non-round conduits
US20150211342A1 (en) * 2014-01-27 2015-07-30 Mark D. Shaw Method of lining an oil well pipe in situ
US20160273699A1 (en) * 2015-03-20 2016-09-22 Shonan Gosei-Jushi Seisakusho K.K. Position adjusting spacer and method for adjusting the position of a rehabilitation pipe using such

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036916A1 (fr) * 1999-03-15 2000-09-20 Channeline Sewer Systems Limited Revêtement pour canalisations d'égouts
US8327886B2 (en) * 2006-12-19 2012-12-11 Ashimori Industry Co., Ltd. Conduit repair structure
US20140007968A1 (en) * 2012-07-05 2014-01-09 Lembit Maimets Apparatus and method for internal repair of round and non-round conduits
US20150211342A1 (en) * 2014-01-27 2015-07-30 Mark D. Shaw Method of lining an oil well pipe in situ
US20160273699A1 (en) * 2015-03-20 2016-09-22 Shonan Gosei-Jushi Seisakusho K.K. Position adjusting spacer and method for adjusting the position of a rehabilitation pipe using such

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112050021A (zh) * 2020-09-22 2020-12-08 中铁十八局集团有限公司 一种jpccp管的现场修复方法
CN112050021B (zh) * 2020-09-22 2022-04-26 中铁十八局集团有限公司 一种jpccp管的现场修复方法

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