EP2847387A1 - Dispositif anti-affouillement pour ouvrages en mer - Google Patents

Dispositif anti-affouillement pour ouvrages en mer

Info

Publication number
EP2847387A1
EP2847387A1 EP13736745.4A EP13736745A EP2847387A1 EP 2847387 A1 EP2847387 A1 EP 2847387A1 EP 13736745 A EP13736745 A EP 13736745A EP 2847387 A1 EP2847387 A1 EP 2847387A1
Authority
EP
European Patent Office
Prior art keywords
flexible
mats
elements
weight
weight elements
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.)
Withdrawn
Application number
EP13736745.4A
Other languages
German (de)
English (en)
Inventor
Anton Kanand
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2847387A1 publication Critical patent/EP2847387A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017—Means for protecting offshore constructions

Definitions

  • the invention relates to a device for the Kolkschutz of offshore structures.
  • Cementation is understood to mean erosion phenomena of a water-covered ground due to wave and flow effects and the like in the field of offshore structures.
  • a disadvantage of known protective measures is that they are complicated but nevertheless with regard to their protective effect
  • a third, often used possibility is therefore to use no Kolkschutz at all, to accept a Verkulkung and thereby to hope that the forming Verkupkung a certain depth not
  • the foundation needs a depth of this depth
  • Flow damage can be damaged or destroyed.
  • the present invention has been made in the light of the above
  • the object of the invention is therefore to propose a device for the Kolkschutz of offshore structures, which provides a durable, cost effective and thereby effective protection, but which can be removed with a single Kranzug in dismantling of the system from the seabed.
  • the device has one or more interconnected, flexible mats as well as permanently attached to the outer edge region of the device by means of fasteners weight elements and support elements are provided for stiffening, which
  • the support elements may be made of steel or plastic.
  • the hinge is preferably a hinge, either mechanically or a film hinge, provided, which allows a movement of the support elements in the vertical direction, ie up or down. It is preferably arranged at the end or at the end region of the carrier element, by means of which the carrier element is fastened to the offshore structure.
  • the flexibility of the mats compensates for local uneven floors.
  • the overall shape of the device is ensured by the stiffening support elements.
  • the flexible mat or flexible mats become smaller than the weight elements pressed down.
  • the weight elements are on the outer edge of the
  • the mats may also include additional weights for weighting and fixation, which are arranged or attached in areas other than the margins of the flexible mats. This will be
  • the number of weights required depends on the height of the seabed in relation to the sea level, as the power of the waves decreases with greater depth.
  • the support elements are attached at one end by means of hinges on the offshore structure, while in the region of its other end, the weight elements are attached. This creates a
  • Carrier elements are attached by means of a joint on the offshore structure, can form a tendency from the joint to the outside.
  • the inclined mats can serve as a ramp for water and pressure waves and derive their power. Should the floor sag or undercut beneath the weight members, then the support member will pivot downwardly along with the mat, restoring the protective effect.
  • the device or the flexible mat or the interconnected flexible mats forms a disc with a circular or approximately circular contour, in the center of which an opening for the offshore structure is provided. It has been shown that this form provides optimum protection against Verkolkung.
  • the central opening can be adapted to the shape of the offshore structure and has, for example, in a monopile also a circular contour.
  • sealing means are provided so that no water can penetrate between the offshore structure and the device.
  • the radius of the device is about three times as long as the radius of the offshore structure, in particular a monopile, in the plane in which the device is arranged or attached to the offshore structure.
  • the flexible mats are stiffened over their entire area in the radial direction.
  • the weight elements have, based on their base area in the form of an elongated, symmetrical trapezoid, the longitudinal axis in each case points in the direction of the center of the device or the offshore structure.
  • Weight elements may have the shape of an isosceles, symmetrical trapezoid in longitudinal section and / or in cross section, wherein the corners are preferably rounded. This creates no vortex and unfavorable currents of the seawater.
  • An advantage of the upwardly and longitudinally tapered shape is that the flexible mats can lower down without the weight elements coming into contact.
  • the flexible mat or flexible mats can be geotextile / s or
  • plastic film / n also in combination with other materials. It may or may also consist of geotextiles or plastic films.
  • Geotextiles areal and permeable textiles. They serve as a building material in the area of deep water, water and traffic infrastructures.
  • the textile consists for example of polyamide, polyester and polyethylene.
  • the support elements can run straight. But you can also do one
  • Figure 1 a is a plan view of the device 1;
  • Figure 1 b is a partial view of the device 1 in vertical section
  • Figure 2 shows the device 1 with a central monopile 2 in the vertical
  • FIG. 4a shows a detailed view of the sunken device 1 in one
  • Figure 4a is a detail view as in Figure 4a in a front view. Functionally identical parts are provided with the same reference numerals. Detailed description of the invention
  • FIG. 1 a shows a plan view of an embodiment of the device 1.
  • This has interconnected, flexible mats 3 of geotextiles.
  • the interconnected, flexible mats 3 have the shape of a disc with a circular contour.
  • a likewise round opening 5 is provided for an offshore structure to be protected, which may be, for example, a monopile 2 of a wind power plant.
  • the radius of the device 1 is at Monopiles about three times as long as the radius of the opening 5 and the radius of the monopile 2, and with respect to the horizontal plane in which the
  • Device 1 is attached to the monopile 2, namely approximately at the height of
  • weight elements 4 mounted on the mats 3, which press the mats 3 at the edges down into the seabed and thus seal.
  • the weight elements 4 are shown only on two opposite circle segments, but actually, weight elements 4 are along the entire outer edge area 6 of the pane
  • Weight elements 4 are aligned on the mat so that the (imaginary) longitudinal axis of each weight element 4 extends radially in the direction of the opening 5 and thus meet all the longitudinal axes in the center 14 and the opening 5 of the device 1.
  • the weight elements 4 are arranged with the smallest possible distance next to each other on the mats 3, so that at its lower portion a smaller
  • Interspace is formed. This avoids that the flexible mats 3 between the weight elements 4 can form wrinkles. Creasing would be harmful and would promote under-flushing and colc. However, a small distance in the range of one millimeter to one centimeter is necessary, since the outer circumference of the device 1 decreases as the flexible mats sink. The cheapest, minimum possible distance between the
  • Weight elements 4 results from the scope of the device 1 and the expected, possible lowering of the edge regions 6 of the device first
  • the elongated support members 7 are securely and permanently attached below the mats 3 to these. They extend radially from the outer edge region 6 of the device 1 to the inner edge region 9 of the opening 5. As a result, the flexible mats 3 are stiffened over their entire surface.
  • the distance 15 between each two support elements 7 is about one and a half to three meters.
  • the carrier elements 7 are also shown only in each case in two opposite circular sections. In fact, the weight and support elements 4, 7 are continuous for the whole
  • Figure 1 b shows the device 1 as in Figure 1 a in a partial view in vertical section.
  • the device 1 lies on the seabed 8. It is the range of a support member 7 selected, which is shown in cross section.
  • Carrier elements 7 have a shape that penetrates easily into the seabed 8, in the case shown a T-shape, and are attached to the underside of the elastic mats 3.
  • the support elements 7 are made of a suitable steel or a suitable plastic.
  • FIG. 2 shows the device 1 with a section of a monopile 2 in vertical section (the monopile 2 arranged in the central opening 5 is not part of the device 1 according to the invention).
  • the flexible mats 3 are the
  • the mats 3 and the monopile 2 sealing means 1 1 are provided so that no seawater can penetrate under the mats 3. This prevents under-flushing.
  • the mats 3 are secured to the monopile 2 safely and permanently by means of suitable fastening means 13.
  • the mats 3 In the vicinity of the monopile 2, ie in the region between the fastening means 13 and the one end of the carrier elements 7, the mats 3 by their flexibility form movable hinges 10, which act as film hinges. Through these hinges 1 1, the sections of the device 1 in the area between the
  • the weight elements 4 are fixed on the upper side of the flexible mats 3, which press the mats 3 with the support elements 7 down.
  • the carrier elements 7 and the mats 3 fastened thereon have a downwardly facing bevel 12. As a result, the device 1 is sealed against seawater and protected from Verkolkung.
  • FIG. 3 shows partial views of the device 1, indicated by a, b and c, in vertical section.
  • FIG. 3a corresponds to the sectional view in FIG. 2, wherein only the left side of the device 1 from FIG. 2 is shown.
  • FIG. 3 b shows the device 1 as in FIG. 3 a, but with a seabed 8 sunk by about two meters in thickness.
  • FIG. 3c shows the device 1 as in FIG. 3b, but after a later period.
  • Figure 3c is shown that the support elements 7 at
  • the bottom of the sea floor is about two meters away, with an optimal inclination of about 1: 5, the length of the mats 3 from the monopile 2 is about ten meters.
  • FIG. 3d shows another embodiment of the device 1 with carrier elements 7 bent downwards. This results in a
  • FIG. 4a shows a detailed view of the sunken device 1 in one
  • weight elements 4 are arranged in the outer edge region 6 of the flexible mats 3.
  • the weight elements 4 essentially have the basic shape of a cuboid, which slightly tapers both upwards and toward the center 14 of the device.
  • weight elements 4 were geometrically strictly parallelepiped-shaped, they could come into contact in their upper area and interfere with one another when the flexible mats 3 sink unevenly, that is to say that a portion of an edge region 6 sinks lower than the other one. In order to prevent contact of the weight elements 4 in such cases, the weight elements 4 in longitudinal section, in cross-section and with respect to the
  • the corners and edges of the weight elements 4 are also rounded, whereby no vortex and unfavorable currents of the sea water form.

Abstract

L'invention concerne un dispositif (1) anti-affouillement pour ouvrages en mer (2). Le but de l'invention est d'offrir une protection durable, économique et efficace, qui soit facile à démonter. A cet effet, le dispositif (1) présente un mate (3) flexible ou plusieurs mates (3) reliés les uns aux autres ainsi que des éléments formant poids (4) fixés à la bordure extérieure du dispositif (1). Des éléments supports (7) servent au renforcement, au moins une articulation (10) étant disposée à une extrémité de ces éléments supports et permettant la fixation des mates (3) flexibles de manière articulée à l'ouvrage en mer (2).
EP13736745.4A 2012-05-10 2013-05-06 Dispositif anti-affouillement pour ouvrages en mer Withdrawn EP2847387A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210104092 DE102012104092A1 (de) 2012-05-10 2012-05-10 Vorrichtung für den Kolkschutz von Offshore-Bauwerken
PCT/DE2013/100165 WO2013167121A1 (fr) 2012-05-10 2013-05-06 Dispositif anti-affouillement pour ouvrages en mer

Publications (1)

Publication Number Publication Date
EP2847387A1 true EP2847387A1 (fr) 2015-03-18

Family

ID=48790125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13736745.4A Withdrawn EP2847387A1 (fr) 2012-05-10 2013-05-06 Dispositif anti-affouillement pour ouvrages en mer

Country Status (3)

Country Link
EP (1) EP2847387A1 (fr)
DE (2) DE102012104092A1 (fr)
WO (1) WO2013167121A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015015127A1 (de) 2015-11-21 2017-05-24 Daimler Ag Vorrichtung und Verfahren zum Kommissionieren von Ladungsträgern
CN106869189B (zh) * 2017-03-27 2022-04-19 北京科技大学 一种抑制海洋建筑物桩基础海底冲刷的装置
CN109372006B (zh) * 2018-11-27 2023-11-10 中国电建集团华东勘测设计研究院有限公司 海上风机基础防冲刷保护结构及其施工方法
CN111021431B (zh) * 2019-11-14 2021-08-17 中国能源建设集团广东省电力设计研究院有限公司 单桩基础冲刷防护装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529427A (en) * 1968-11-05 1970-09-22 Delta Diving Ltd Device for preventing or reducing scours at the lower ends of members supporting marine structures
GB1383012A (en) * 1971-01-11 1975-02-05 Larsen O J F Apparatus for preventing and reducing scours in a bed supporting a body of water
US3859803A (en) * 1973-12-17 1975-01-14 Sofec Inc Anti-scour means for submarine structures
NL167217C (nl) * 1978-07-06 1981-11-16 Karel Josephus Cornelis De Wer Inrichting voor het afsluiten van de voet van een op, respectievelijk in de bodem van een water staande paal ten opzichte van het omgevende bodemoppervlak.
GB0324317D0 (en) * 2003-10-17 2003-11-19 Dixon Richard K A composite marine foundation
DE102008020261A1 (de) * 2008-04-22 2009-10-29 Kanand, Anton, Dipl.-Ing. Vorrichtung für den Hochwasser- und Küstenschutz

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013167121A1 *

Also Published As

Publication number Publication date
DE112013002376A5 (de) 2015-01-22
DE102012104092A1 (de) 2013-11-14
WO2013167121A1 (fr) 2013-11-14

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