EP2889430A1 - Équipement de réglage à sec - Google Patents

Équipement de réglage à sec Download PDF

Info

Publication number
EP2889430A1
EP2889430A1 EP13199736.3A EP13199736A EP2889430A1 EP 2889430 A1 EP2889430 A1 EP 2889430A1 EP 13199736 A EP13199736 A EP 13199736A EP 2889430 A1 EP2889430 A1 EP 2889430A1
Authority
EP
European Patent Office
Prior art keywords
sealing
dry setting
infrastructure
setting equipment
shoes
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.)
Granted
Application number
EP13199736.3A
Other languages
German (de)
English (en)
Other versions
EP2889430B1 (fr
Inventor
Wim Schalley
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.)
Belbridge bvba
Original Assignee
Belbridge bvba
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 Belbridge bvba filed Critical Belbridge bvba
Priority to EP13199736.3A priority Critical patent/EP2889430B1/fr
Publication of EP2889430A1 publication Critical patent/EP2889430A1/fr
Application granted granted Critical
Publication of EP2889430B1 publication Critical patent/EP2889430B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02—Sheet piles or sheet pile bulkheads

Definitions

  • the object of the instant application is the (temporary) isolation of harbor and inland marine infrastructure by dry setting equipment in order to provide safe and dry working space for underwater works and thus to make the infrastructure accessible to workers who have to work on the infrastructure.
  • the dry setting equipment of interest here may be designated as a cofferdam.
  • Examples of infrastructure also of interest are sheet or tubular piles, quay walls, bridge columns, lock doors, jetties, river embankments, etc.
  • a cofferdam is provided with horizontal and vertical tubular sealing means.
  • the infrastructure to be isolated is corrugated with ribs and grooves called out-pounds and in-pounds, respectively.
  • the in-pounds, facing the dock side, are filled up with water.
  • the problem at the origin of the invention of the instant case relates to the sealing between the cofferdam and the in-pounds, the cofferdams, to this end, being provided with sealing shoes.
  • the second issue of concern is the fact that the surface of the infrastructure to be sealed by the cofferdam, and more particularly the bottom surface of the in-pounds, is usually not quite flat. It could be irregular, it could be also provided with "obstacles", such as tie rods for pulling the infrastructure back to the land side, for keeping it in place.
  • the invention of the instant case is proposed for, first, taking care of the irregular nature of the surfaces to be sealed, those of the horizontal and vertical sealing tubes as well as those of the sealing shoes.
  • the invention relates to a dry setting equipment for isolating an infrastructure at least partly under water and providing a dry working space to the infrastructure, the equipment comprising sealing means, secured to the equipment by a securing side, and to be applied against surfaces of the infrastructure to be sealed by a sealing side, characterized in that the stiffness of the side opposite the sealing side of the sealing means is greater than the stiffness of the sealing side of the sealing means.
  • the stiffness of the sealing means is decreasing towards their sealing side. Thanks to the invention and to the relative flexibility of the sealing side of the sealing means, this sealing side could more or less correspond in shape to the surface of the infrastructure to be sealed, while the opposite side of the sealing means, with a greater stiffness, exerts a certain pressure onto the sealing side, with the result that the sealing side does indeed more or less correspond in shape to the surface of the infrastructure to be sealed, without the risk of some water getting into the space between the surface of the infrastructure and the sealing means.
  • the decrease in stiffness of the sealing means is incremental and it comprises preferably at least two different compounds of different stiffnesses, respectively.
  • the different compounds of the sealing means may be wrapped by a flexible sheet preventing water and air to penetrate between the compounds.
  • the sealing means may comprise horizontal and or vertical sealing tubes of which the securing side is secured to a supporting plate of the equipment.
  • the sealing means may also comprise sealing shoes arranged for sealing in-pounds of the infrastructure, said sealing shoes having a hard core on the side opposite the sealing side of the sealing shoes, with a shape like a rib, adapted to the shape of the in-pounds to be sealed, for the sealing shoes to resist to the water pressure and not to be pushed away from the infrastructure.
  • the hard core is surrounded by two superposed layers of different stiffnesses, except in a rear part of it secured to the dry setting equipment, preferably by means of a supporting shaped piece itself secured to the dry setting equipment.
  • sealing shoes of the instant case are not as complicated as those of EP0533649 , which have been designed to also be adapted to irregular profiles of sheet piles.
  • These prior art shoes include a through air chamber, a hard core, adjacent the air chamber and a deformable sealing element. The air chamber exerts a pressure onto the core which transmits that pressure to the sealing element. These three compounds are slidingly mounted between two guiding plates.
  • the compounds of the sealing shoes are wrapped by a flexible sheet preventing water and air to penetrate between the compounds.
  • a flexible and protruding skirt is placed underneath the sealing shoes and arranged for being bent against the surface of the infrastructure to be sealed and acting as a back up sealing means.
  • the infrastructure to be isolated is here a sheet pile 1, here partly under water, which is corrugated with out-pounds 2 and in-pounds 3.
  • the in-pounds 3 are facing the dock side and, prior to be isolated, filled up with water.
  • the pile 1 is isolated by a dry setting cofferdam 4.
  • the cofferdam 4 in the instant case, comprises two upright side walls 5, 6 and an upright back and dockside wall 7. There is a floor at the bottom of the three walls.
  • a continuous horizontal and vertical tubular sealing 8, to be seen on figure 1 is secured over the entire length and the entire height of the cofferdam to the edges 9, 10 of its side walls 5, 6 and bottom. This peripheral sealing 8 shall be described in more details herein below.
  • the cofferdam is provided with sealing shoes 11.
  • the sealing shoes shall also be described in more details herein below.
  • the shoes 11 are here secured to the dockside wall 7 of the cofferdam 4 by means of
  • Each shoe has a general shape of a truncated pyramid, best seen on figure 4 , adapted to fit within an in-pound 3, with a small base 17, to be in abutment against the bottom surface 16 of the in-pounds and a large base 18 facing the dock side.
  • the small base 17 corresponds to the sealing side of the shoe.
  • the top surface 19 of the shoe, between the small and large bases, corresponds to its securing side as will be explained herein below.
  • the stiffness of the shoe is decreasing from the large base 18, opposite the small and sealing base 17, to the small and sealing base 17 of the shoe.
  • the stiffness of the sealing shoe, adjacent the large base 18, is greater than the stiffness of the sealing side 17 of the sealing shoes. More precisely, in the instant case as described here, the shoe 11 comprises three different compounds of different stiffnesses, respectively.
  • a hard core 20 which is surrounded by two superposed layers 21, 22 except in the rear part of the shoe, corresponding to the large base 18 ( figure 5 ), with the intermediate layer 21 having a stiffness smaller than the one of the hard core 20 but greater than the one of the "outer" and sealing layer 22.
  • the three compounds are wrapped by a flexible sheet 23 preventing water and air to penetrate between the compounds.
  • a flexible skirt 24 is secured underneath the sealing shoe 11. It has a trapezoidal shape and is protruding over the lateral sides 25, 26 and the large base 17 of the shoe, which are perpendicular to the top surface 19. The skirt 24 is secured against the bottom surface 25 of the shoe, opposite and parallel to the top surface 19.
  • Two securing metallic plates 26, 27 are fixed onto the top surface 19 and the flexible skirt 24 for, first firmly holding the different compounds of the shoe and maintaining its overall stiffness and, second, for securing the shoe to the supporting plate 15.
  • the hard core 20 of the shoe 11 may be made of wood.
  • the surrounding layers 21, 22 may be made of plastic foam.
  • the wrapping sheet 23 may be made of a polymer of the registered trademark linatex, which is a very powerful material standing sever conditions.
  • FIG 7 On figure 7 is shown a sealing shoe 11 during its introduction into an in-pound 3 of a sheet pile 1, to illustrate the back up function of the flexible skirt 24 bent against the bottom surface 16 of the in-pound 3, prior to the small sealing base 17 of the shoe 11 being pushed into abutment against the bottom surface 16.
  • the tubular structure of the peripheral sealing 8 is represented on figure 8 . It is very similar to that of the sealing shoes 11, however, without a hard core. Two circular layers 29, 30 of different stiffnesses are mounted on a metallic supporting plate 31, the stiffness of the central layer 29 being greater than that of the peripheral layer 30. Like with the sealing shoes 11, the two layers 29, 30 are wrapped by a flexible sheet 32 also preventing water and air to penetrate between the two compounds 29, 30.
  • the peripheral 8 is arranged to be applied against the surface 33 of the out-pound 2 of the sheet pile 1, via the peripheral sealing layer 30 (through the flexible sheet 32).

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP13199736.3A 2013-12-30 2013-12-30 Équipement de réglage à sec Active EP2889430B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13199736.3A EP2889430B1 (fr) 2013-12-30 2013-12-30 Équipement de réglage à sec

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13199736.3A EP2889430B1 (fr) 2013-12-30 2013-12-30 Équipement de réglage à sec

Publications (2)

Publication Number Publication Date
EP2889430A1 true EP2889430A1 (fr) 2015-07-01
EP2889430B1 EP2889430B1 (fr) 2017-09-27

Family

ID=49911346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13199736.3A Active EP2889430B1 (fr) 2013-12-30 2013-12-30 Équipement de réglage à sec

Country Status (1)

Country Link
EP (1) EP2889430B1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768265A (en) * 1971-09-27 1973-10-30 Us Navy Cofferdam
EP0533649A1 (fr) * 1991-09-18 1993-03-24 General Coatings Dispositif pour assurer l'étanchéité à l'eau de caissons
EP2163692A1 (fr) * 2008-09-16 2010-03-17 General Coatings N.V. Système ajustable et procédé pour effectuer un travail sur une structure sous-marine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768265A (en) * 1971-09-27 1973-10-30 Us Navy Cofferdam
EP0533649A1 (fr) * 1991-09-18 1993-03-24 General Coatings Dispositif pour assurer l'étanchéité à l'eau de caissons
EP2163692A1 (fr) * 2008-09-16 2010-03-17 General Coatings N.V. Système ajustable et procédé pour effectuer un travail sur une structure sous-marine

Also Published As

Publication number Publication date
EP2889430B1 (fr) 2017-09-27

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