EP4168632A1 - Profil de fondation pour une structure en haute mer - Google Patents

Profil de fondation pour une structure en haute mer

Info

Publication number
EP4168632A1
EP4168632A1 EP21728879.4A EP21728879A EP4168632A1 EP 4168632 A1 EP4168632 A1 EP 4168632A1 EP 21728879 A EP21728879 A EP 21728879A EP 4168632 A1 EP4168632 A1 EP 4168632A1
Authority
EP
European Patent Office
Prior art keywords
profile
foundation
hollow body
end section
elongated hollow
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Withdrawn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
EP21728879.4A
Other languages
German (de)
English (en)
Inventor
Daniel Bartminn
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.)
Rwe Offshore Wind GmbH
Original Assignee
RWE Renewables GmbH
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 RWE Renewables GmbH filed Critical RWE Renewables GmbH
Publication of EP4168632A1 publication Critical patent/EP4168632A1/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Withdrawn legal-status Critical Current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
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • 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
    • E02B17/0008—Methods for grouting offshore structures; apparatus therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
    • 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
    • E02D5/22—Piles
    • E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
    • 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
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • 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
    • E02B2017/0091—Offshore structures for wind turbines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0061—Production methods for working underwater
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines

Definitions

  • the application relates to a foundation profile for an offshore structure, in particular an offshore wind energy structure.
  • the application also relates to a foundation set, an offshore structure and a method for installing a foundation profile.
  • Offshore structures and offshore devices are increasingly being erected, especially at sea.
  • offshore wind farms with a large number of offshore wind energy devices are installed to generate electrical energy or to provide electrical energy from so-called renewable energy sources.
  • Offshore locations are usually characterized by relatively continuous wind conditions and high average wind speeds, so that so-called offshore wind farms are increasingly being built.
  • offshore wind farm on a number of offshore wind energy devices, such as a variety of offshore wind turbines, masts and / or at least one offshore substation.
  • the offshore wind farm can be electrically connected via the offshore transformer station, for example, to an onshore transformer station or a further offshore transformer station or offshore converter station.
  • An onshore transformer station in turn, can be connected to a public power grid.
  • An offshore wind turbine is set up to convert the kinetic wind energy into electrical energy.
  • energy cables are laid in the form of submarine cables.
  • installation and, in particular, anchoring in the offshore subsoil is problematic and involves great effort.
  • an offshore structure with a foundation (e.g. monopile, tripod, tripile or facket foundations). to be anchored directly in the offshore subsoil in the form of a water floor, in particular a sea floor.
  • a foundation e.g. monopile, tripod, tripile or facket foundations
  • a foundation has at least one foundation profile.
  • a foundation profile has a profile end section which, when the foundation profile is in the intended state, is arranged in the offshore subsoil, that is to say, in particular, is inserted into the seabed.
  • the foundation profile When installing the foundation profile, the foundation profile, in particular at least the profile end section, is inserted into the offshore foundation, for example by vibrating and / or ramming it into place. Particularly when vibrating in, but also when ramming in, there is a reduction in soil compaction in the area of the profile end section and thus a reduction in the internal friction angle at the contact surface between the profile end section and the offshore subsoil and, as a result, a reduction in the tension in the soil.
  • the expansion process in DE 10 2017 121037 Al cannot be controlled in terms of time. Rather, the expansion process of the water-reactive swellable material used starts immediately upon contact with water. This can be problematic if the introduction of the profile end section into the offshore subsoil does not take place as intended, but rather if there are delays, for example, after the end section coated with the swellable material has already been immersed in the water, for example.
  • the expansion of the swellable material can then be completed before the profile end section is finally introduced. This in turn means that the bracing cannot be increased in the desired manner, so that the load-bearing capacity is reduced or not increased as planned. In this case, additional measures for soil compaction must be taken, which are associated with a high level of effort.
  • the application is therefore based on the object of providing a foundation profile for an offshore structure which enables an increase in the tension at the contact surface between an offshore foundation and a profile end section of the foundation profile in an improved and, in particular, more reliable manner.
  • the object is achieved according to a first aspect of the application by a foundation profile for a 0 ffshore building according to claim 1.
  • the foundation profile comprises a profile end section which is arranged in an offshore subsoil in the intended state of the foundation profile.
  • the foundation profile comprises at least one elongated hollow body which is arranged (or laid) in the intended state on (or around) the profile end section and is set up to accommodate a swellable material.
  • the swellable material is not applied over the entire surface of the outside of the profile end section, but rather an elongated hollow body is arranged on the profile end section, which is designed to receive or fill with a swellable material, an increase in the tension on the Allows contact area between the offshore subsoil and the profile end portion of the foundation profile in an improved manner.
  • a larger range of swellable materials can be used, which can preferably have higher expansion rates than those which can be used according to the prior art.
  • a targeted relocation of the elongated hollow body and thus a more targeted expansion of the swellable material can take place.
  • relocating the elongated hollow body offers the possibility of timing the expansion of a swellable material.
  • the at least one elongated hollow body can be filled in a time-controlled manner, so that it can be ensured that the swellable material does not expand too early.
  • the installation of a foundation profile can be done with increased reliability.
  • the timing can be done by targeted subsequent injection and / or by reaction-delaying properties of the elongated hollow body, its wall and / or bedding.
  • a foundation comprises at least one foundation profile according to the registration or forms the foundation profile according to the registration.
  • a foundation and thus the foundation profile according to the application can in particular be part of an offshore structure.
  • a foundation profile is used in particular to support an offshore facility of the offshore structure.
  • An offshore device or an offshore structure is preferably an offshore wind energy device, such as an offshore wind turbine, an offshore measuring mast or an offshore transformer station.
  • an offshore structure can have a drilling or a production platform or any other platform for the generation, conversion or storage of energy, such as a plant for the production of hydrogen.
  • an offshore structure can comprise an offshore facility, which can be fastened by the foundation profile according to the application in an offshore subsoil, preferably in the form of a body of water, in particular a seabed.
  • An offshore structure can in particular be formed by the offshore facility (e.g. a platform, a gondola, etc.) and the foundation.
  • Exemplary and non-exhaustive foundations or foundation structures are monopile, tripod, tripile or jacket foundations.
  • Such a foundation can comprise at least one foundation profile, in particular in the form of a foundation pile.
  • a foundation profile means in particular an elongated component which can preferably have an essentially identical cross section.
  • a foundation profile can be a solid or closed profile (e.g. full pile) or an open or hollow profile (e.g. hollow pile).
  • a foundation profile can preferably be made of metal, in particular steel. However, other materials are also alternatively or additionally conceivable, such as concrete, glass fiber (glass fiber composite), carbon fiber (carbon fiber composite) and / or wood.
  • the cross-sectional shape can in principle be formed as desired, preferably essentially circular.
  • the foundation profile can be formed in the shape of a cylinder or tower.
  • a foundation profile according to the application comprises a profile end section.
  • the profile end section in particular, the part or section of the foundation profile is referred to, which in an intended or installed state of the foundation profile, i.e. when the foundation profile is introduced into the offshore subsoil with a desired (minimum) penetration depth / in the offshore subsoil is arranged, so lies essentially below the offshore subsoil surface.
  • This section can also be referred to as an anchor section, as it is used to anchor the foundation profile in the offshore subsoil.
  • the further part or section of the foundation profile above the profile end section is in particular surrounded by water and is used in particular to support an offshore device that is connected [directly or indirectly].
  • the foundation profile comprises at least one elongated hollow body arranged or laid on the profile end section.
  • at least one elongated hollow body is arranged on or in the outer wall of the profile end section.
  • the elongated hollow body can be placed on the outside of an outer wall of the profile end section, in particular fastened to it.
  • the elongated hollow body can be at least partially embedded or integrated in an outer wall element of the profile end section.
  • an elongated hollow body means, in particular, a hose.
  • the elongated and, in particular, flexible hollow body can preferably have a cylindrical shape and encompass a circumferential outer wall or casing.
  • the casing can enclose an interior space.
  • the elongate hollow body can preferably be formed from a flexible material, such as a plastic material.
  • the flexible material can in particular allow expansion or expansion of the volume of the elongated hollow body.
  • the elongated hollow body is designed to accommodate a swellable material, that is to say to be filled with it.
  • a swellable material is to be understood in particular as a material which can expand its volume in conjunction with a further material.
  • the swellable material can preferably be a water-reactive material » which swells or expands in connection with water » eg through sulphate expulsion.
  • two or more elongated hollow bodies can be provided. Furthermore, it goes without saying that at least a part of the elongated hollow body can be arranged on the at least one further section of the foundation profile.
  • the elongated hollow body can comprise a casing made of a flexible or expandable material.
  • the material of the elongated hollow body can preferably have a modulus of elasticity (also called modulus of elasticity) of .maximal 10 GPa (at 20 ° C.), for example between 0.01 and 5 GPa (at 20 ° C.). If such a hollow body (at least in a section of the elongated hollow body) is (almost completely) filled with a previously described swellable material / an increase in the volume of the hollow body (at least in said body section) can be caused by the swellable material when the swellable material expands will.
  • the stretch rate of the elastic material can be 1%.
  • the hollow body can have a diameter (in the normal state) between 2 and 10 cm. In an expanded state, the diameter can be increased by between 0.5 and 5%, for example between 1 and 2%.
  • the elongated hollow body can, alternatively or additionally, be a perforated elongated hollow body.
  • the elongate hollow body can have, at least in sections, a plurality of (perforation) openings or holes in the casing.
  • An opening can advantageously be formed in such a way that when the swellable material expands, it can partially penetrate to the outside through the openings.
  • the (perforation) openings can be used to ensure that water enters the elongated hollow body can penetrate (automatically), for example during an installation process. In the case of a water-reactive material, the expansion of the swellable material is achieved or started (automatically).
  • the diameter of the openings can be selected in such a way that, in the case of an elongated hollow body prefilled with a swellable material (i.e. filled before the process of introducing the foundation profile), water can penetrate the swellable material in its initial state (i.e. before a swelling or expansion process) but can (almost) not get to the outside.
  • the elongated hollow body can be arranged in any way on the profile end section, that is to say in particular laid in any desired pattern on the profile end section.
  • a plurality of elongated hollow bodies can be arranged on the profile end section, in particular run essentially parallel to the longitudinal axis of the foundation profile.
  • An elongated hollow body can also be arranged in a U-shape, with the two legs of the U-shape in particular being able to run essentially parallel to one another and in particular to the longitudinal axis of the foundation profile.
  • the at least one elongated hollow body can be arranged or laid in a spiral shape around the profile end section, preferably in a double spiral shape.
  • the axis of the spiral shape can be essentially identical to the longitudinal axis of the foundation profile.
  • the swellable material can preferably be a water-reactive material.
  • the swelling material can be selected from the group comprising: cement-based material,
  • Such materials have proven to be well suited for use in foundation profiles and, in particular, have high expansion rates.
  • a so-called swelling explosive e.g. Dynacem®
  • Dynacem® which can in particular be based on CaO, can be used with particular preference.
  • the at least one elongated hollow body can preferably be at least partially integrated in an outer wall element of the profile end section - independently of the laying pattern.
  • the elongated hollow body can be at least partially embedded in an outer wall element of the profile end section.
  • the casing can be completely integrated or enclosed in the outer wall element.
  • at least a part of the casing can extend outwardly from the outer wall element.
  • the hollow body can in particular be pressed into the outer wall element.
  • the outer wall element can be made at least partially from a concrete-containing material and / or a mortar-containing material.
  • the at least one elongated hollow body can be integrated in one or more outer wall element (s) which is / are formed from mortar, grout or a concrete cylinder jacket.
  • the outer wall element can preferably contain reinforcement that is mechanically connected, for example, to a (circumferential) profile base body.
  • the profile end section can comprise at least one profile base body with at least one outwardly directed (circumferential) recess.
  • the profile base body can in particular be made of metal (eg steel) and / or a glass fiber composite material and / or a carbon fiber composite material.
  • the profile end section can comprise at least one outer wall element inserted in the recess. As already described, at least one elongated hollow body can preferably be embedded in this outer element.
  • the elongated hollow body can have at least one filling opening, set up for filling (in particular injecting) at least the swellable material iii the elongated hollow body.
  • the at least one filling opening can preferably be arranged at at least one end of the elongated hollow body. It is conceivable that the other end of the elongated hollow body is closed, that is to say in particular that there is no filling opening at the other end. It goes without saying that the hollow body can, however, be perforated at the other end, as described above.
  • two (or more) filling openings can also be provided in other variants. For example, in the case of the above-described U-shaped course of an elongated hollow body, a filling opening can be provided at each end.
  • a filling opening differs from a previously described (perforation) opening, in particular in terms of its diameter.
  • the diameter of the filling opening can be at least twice as large, preferably at least five times as large (preferably between ten and twenty times as large) as the diameter of a perforation opening.
  • the filling opening can be designed to be closable.
  • the filling opening can be arranged at least above the offshore subsoil surface. In other words, the at least one filling opening can be arranged on the section provided above the profile end section.
  • the at least one filling opening in particular a filling opening located at least in the installed state above the offshore subsoil surface, enables the expansion of the swellable material to be controlled over time.
  • the swellable material can only be used at the installation site, for example during and / or after the introduction process of the
  • the hollow body can be pre-filled and water can only be filled in at the installation site, for example during and / or after the installation of the foundation profile.
  • the at least one elongated hollow body can particularly preferably be filled with a mixture of swellable material and water produced (on site).
  • the swelling process can be time-controlled in this way. The time control can, in particular, take into account time delays in the introduction process.
  • a watercraft in particular a ship, with an injection device (for example a shotcrete machine) can be provided at the installation site of the foundation profile.
  • the injection device can be temporarily coupled to the at least one filling opening via a connecting hose.
  • the injection device can in particular be set up to inject at least the swellable material (and / or water) into the hollow body, for example with a certain mixing ratio of swellable material to water.
  • a Druckbeetzs. take place, which allows a (almost complete) filling of the hollow body with the swellable material or preferably the mixture mentioned.
  • the particularly cement-containing mixture can be designed in such a way that the pressure development and the volumetric development of the mixture are matched to the concrete contained in it, so that the reinforcement yields at a point in time at which the volume development is at least 1 hour after the injection, preferably 3 Hours after injection.
  • the foundation set comprises at least one foundation profile (in particular according to claim 1 (but without a fixed hollow body)) with at least one profile end section which is arranged in an offshore subsoil in the intended state of the foundation profile.
  • the foundation set comprises at least one elongated hollow body which can be arranged (or laid) in the intended state on (or around) the profile end section and is set up to accommodate a swellable material.
  • the offshore structure comprises at least one previously described foundation profile.
  • the offshore structure can comprise a foundation with at least one foundation profile described above.
  • Yet another aspect of the application is a method for installing a foundation profile with at least one profile end section and at least one elongated hollow body arranged (or laid) around the profile end section, in particular a foundation profile described above.
  • the procedure includes:
  • the introduction or insertion of the profile end section of the foundation profile into the offshore subsoil can preferably include vibrating the profile end section of the foundation profile (with a predeterminable minimum penetration depth). When vibrating in, the tightness of the offshore subsoil is reduced in particular in the area of the profile end section.
  • the profile end section of the foundation profile can be driven in. It goes without saying that other methods can also be used, such as producing a bore and then inserting the foundation profile into this bore.
  • the expansion can be timed by filling. Due to the increased tensioning of the contact surface between the foundation profile and the offshore subsoil, the skin friction increases, so that in turn the load-bearing capacity can be increased.
  • the filling or filling of the at least one elongated hollow body with a swellable material can take place before the profile end section of the foundation profile is introduced, for example already onshore or in a harbor. For example, it can be filled at the factory.
  • At least the swellable material can be poured in at an offshore installation location of the foundation profile, i.e. in particular (immediately) before the profile end section of the foundation profile is introduced into an offshore subsoil, during the introduction and / or after the introduction .
  • This can facilitate the installation and in particular the transport of the foundation profile to the installation site. Timing of the swelling process can be achieved.
  • a watercraft with an injection device can be used for filling.
  • the filling in of the swellable material can include filling in a mixture of the swellable material and at least one further material (preferably water) causing the expansion of the swellable material.
  • the mixture can be produced by mixing the materials mentioned (on site, that is to say in particular at the installation site) with a specific mixing ratio. Immediately after the mixture has been produced (or after a certain time delay), the mixture can be filled or injected into the at least one elongated hollow body, as described above.
  • the elongated hollow body can be at least partially filled with an intermediate fluid, in particular in the form of a liquid.
  • An intermediate fluid is in particular a liquid, preferably water, with which the elongated hollow body is filled before it is filled with the swellable material.
  • the elongated hollow body can retain its shape, even if it is, for example, at least partially integrated in an outer wall element. In particular, it can be achieved that no constrictions are formed in the hollow body.
  • a force acting on the casing of the hollow body can reduce the volume or the volume .
  • the hollow body cannot be (completely) filled with a swellable material, or only with increased effort.
  • the intermediate filling ensures that constrictions can be prevented and, in particular, complete filling of the hollow body can be ensured.
  • the intermediate fluid is emptied from the hollow body (immediately) before the swellable material is poured into the hollow body.
  • the intermediate fluid can preferably be at least partially emptied from the elongated hollow body at an offshore installation location of the foundation profile.
  • the intermediate fluid can be drained and / or pumped out through a (closable and openable) opening.
  • Fig. 1 is a schematic perspective view of an embodiment of a
  • FIG. 2 shows a schematic (sectional) view of an exemplary embodiment of an offshore structure according to the present application with a
  • FIG. 3 shows a schematic view of a further exemplary embodiment of a foundation profile according to the present application
  • Fig. 4 is a schematic view of a further embodiment of a
  • FIG. 5 shows a schematic view of a further exemplary embodiment of a
  • FIG. 6 shows a diagram of an exemplary embodiment of a method according to the present application.
  • X denotes the vertical direction
  • Y denotes a horizontal direction
  • FIG. 1 shows a schematic perspective view of an exemplary embodiment of a foundation profile 100 for an offshore structure according to the present application.
  • the foundation profile 100 is in particular part of a foundation 102.
  • the foundation profile 100 can form the foundation 102.
  • other foundations with, for example, a plurality of foundation profiles can be provided.
  • the foundation profile 100 is in the present case designed as a cylindrical pile 100, for example as a hollow or solid pile 100.
  • the diameter of the foundation profile 100 can remain essentially constant.
  • the foundation profile 100 can preferably be made of steel and / or a glass fiber composite material and / or a carbon fiber composite material.
  • the foundation profile 100 has a profile end section 104.
  • the profile end section 104 is, in particular, the section 104 of the foundation profile 100 which, in an intended state of the foundation profile 100, ie when the foundation profile 100 is anchored in the offshore building ground in which the offshore building ground is arranged.
  • the profile end section 104 can in particular have a length of 1/3 of the total length of the foundation profile 100.
  • an elongated hollow body 106 is arranged at least on the profile end section 104.
  • the elongated hollow body 106 is in particular a hose 106.
  • the hose 106 has a casing 114 which encloses a cavity 116 or interior.
  • the cavity 116 can be at least partially, preferably completely, filled with a swellable material 118, or at least it can be filled. This means in particular that the hose 106 is set up to accommodate a swellable
  • Material 118 or filling with a swellable material 118 is
  • a so-called swelling explosive 118 (e.g. Dynacem®), which can be based on CaO, can particularly preferably be used as swellable material 118.
  • swellable material 118 can be a water-reactive material 118.
  • the casing 114 can preferably be formed from a flexible and / or elastic material.
  • the elastic material preferably a plastic material and / or a textile material, can in particular have a modulus of elasticity between 0.01 and 5 GPa (at 20 ° C. ⁇ swellable material 118.
  • the tube 106 can be perforated and in particular have openings 108 or perforations 108. Through the (perforation) openings 108, water can penetrate into the hollow body 106 in particular during and / or after the introduction of the profile end section 104 of the foundation profile 100 into the offshore subsoil.
  • the penetration of water starts a chemical reaction between the swellable material 118 and the penetrated water, which leads to an expansion and in particular an increase in the volume of the swellable material 118 located in the hose 106. This in turn leads to an increase in the tube volume and / or the swelling material 118 penetrates at least partially to the outside through the openings 108 (and thus increases the volume of the tube 106).
  • the foundation profile 100 can be anchored in the offshore subsoil in a safe and, at the same time, simple manner.
  • the hose 106 has a filling opening 112 at one end 110 of the hose 106, which is set up for filling or filling.
  • a mixture of swellable material 118 and water can preferably be injected into the hose through the filling opening 112.
  • the filling opening 112 can be arranged on a section 107 of the foundation profile 100 which lies in the vertical direction X above the profile end section 104. In other words, when the foundation profile 100 is in the intended state, the filling opening 112 is arranged in particular above the offshore subsoil surface. This enables in particular a temporal Control of the expansion process in that the filling of the at least one hose 106 (for example with the mixture described) can be controlled over time.
  • a plurality of filling openings or no filling opening can also be provided. It is also understood that a plurality of hoses can be provided in other variants of the application.
  • FIG. 2 shows a schematic view of an offshore structure 220 according to the present application with an exemplary embodiment of a foundation profile 200 according to the present application. To avoid repetition, essentially only the differences from the previous exemplary embodiment are explained below, and otherwise reference is made to the previous statements.
  • the offshore structure 220 is an offshore wind power plant 220 in the present case.
  • An offshore wind power plant 220 has an offshore wind energy device 228 and a foundation 202 in a known manner.
  • the offshore structure 220 and thus the foundation 202, in the present case formed by the foundation profile 200, are shown in an installed state or anchored state of the foundation profile 200
  • the profile end section 204 is arranged, in particular anchored, in the installation state in the offshore subsoil 222.
  • the reference number 224 denotes the offshore subsoil surface and the reference number 226 denotes the water surface, in particular the sea surface.
  • At least one elongated hollow body 206 is placed or arranged on or around the profile end section 204, set up to accommodate a swellable material 218.
  • the at least one elongated hollow body 206 is in the present case placed in a spiral shape around the profile end section 204, preferably in a double spiral shape.
  • the axis of the spiral can be essentially identical to the longitudinal axis of the foundation profile 200. Such a course of the hollow body increases the tension on the contact surface in a particularly efficient manner.
  • FIG. 3 shows a schematic view, in particular a section, of a further exemplary embodiment of a foundation profile 300 according to the present application. To avoid repetition, essentially only the differences from the previous exemplary embodiments are explained below, and otherwise reference is made to the previous statements.
  • the at least one elongated hollow body 306 is at least partially embedded or integrated in the outer wall of the profile end section 304.
  • the foundation profile 300 has a profile base body 336 with at least one outwardly directed (circumferential) recess 330.
  • the profile end section 304 also comprises at least one outer wall element 332 inserted in the recess 330.
  • the outer wall element 332 can be made at least partially from a concrete-containing material and / or a mortar-containing material.
  • the at least one elongated hollow body 306 can be integrated in one or more outer wall element (s) 332, which is / are formed from mortar, grout or a concrete cylinder jacket.
  • the outer wall element 332 can preferably contain reinforcement 334.
  • the outer wall element 332 can act like a "white tub".
  • FIG. 4 shows a schematic view, in particular a section, of a further exemplary embodiment of a foundation profile 400 according to the present application. To avoid repetition, the Essentially only the differences from the previous exemplary embodiments are explained and otherwise reference is made to the previous statements.
  • a plurality of elongated hollow bodies 406 are provided, which run essentially in a vertical direction x.
  • the elongated hollow bodies 406 run essentially parallel to one another and parallel to the longitudinal axis 440 of the foundation profile.
  • angled courses can also be provided.
  • Each elongated hollow body 406 has a filling opening 412 at its upper end 410. As can be seen, all filling openings 412 are arranged on a section above (viewed in the vertical direction x) of the profile end section 404. The respective lower end 442 is closed or closed.
  • the hollow bodies 406 can easily be filled with a swellable material.
  • a distribution tube (not shown) can be provided.
  • the distribution tube can comprise a filling opening and a plurality of outlet openings, for example corresponding to the number of filling openings 412 of the elongated hollow bodies 406 406. It is understood that instead of a distribution tube, a plurality of distribution tubes can also be provided.
  • FIG. 5 shows a schematic view, in particular a section, of a further exemplary embodiment of a foundation profile 500 according to the present application.
  • a plurality of elongated hollow bodies 506 are provided, which essentially have a U-shaped shape.
  • the respective legs 550 of the elongated hollow bodies 506 run essentially parallel to one another and parallel to the longitudinal axis 540 of the foundation profile.
  • a V or W (or WW.,. J arrangement can also be provided.
  • Each elongated hollow body 506 has a filling opening 512, 554 at its two ends 510, 542. As can be seen, all filling openings 512, 554 are arranged on a section above (viewed in the vertical direction) of the profile end section 504.
  • the hollow bodies 506 can easily be filled with a swellable material.
  • a distribution hose (not shown) can be provided.
  • the distribution hose can comprise a filling opening and a plurality of outlet openings, for example corresponding to the number of filling openings 512, 554 of the elongated hollow bodies 506.
  • the outlet openings can be fluidically coupled to the respective filling openings 512, 554 of the elongated hollow bodies 506. It goes without saying that a plurality of distribution hoses can also be provided instead of one distribution hose.
  • FIG. 6 shows a diagram of an exemplary embodiment of a method according to the present application, in particular for installing a foundation profile, such as a foundation profile according to one of FIGS. 1 to 5.
  • step 601 at least one swellable material is filled into the at least one elongated hollow body.
  • a mixture produced immediately beforehand or produced with a certain time delay
  • at least one further material preferably water
  • a step 602 the profile end section of the foundation profile is introduced into an offshore subsoil.
  • Step 601 can be carried out at least partially before step 602, at least partially during step 602 and / or at least partially after step 602.
  • the profile end section of the foundation profile is first introduced into an offshore subsoil, preferably by vibration.
  • ramming can also take place or a bore can be generated first, into which the profile end section of the foundation profile can then be inserted.
  • a swellable material preferably the above-described mixture, can then be filled into the at least one elongated hollow body, for example through an injection device that can be fluidically coupled to the at least one filling opening, in particular using pressure.
  • a hollow body can be filled with an intermediate fluid in the form of a liquid. Before it is filled with the swellable material, in particular the mixture described above, this intermediate fluid, in particular water, can be emptied.
  • the groundwater in the offshore subsoil can penetrate and react with the swellable material. It goes without saying that perforation can be dispensed with in the above-described mixture.
  • the expansion can be controlled over time. Due to the increased tension on the contact surface between the foundation profile and the offshore subsoil, the skin friction increases, so that in turn the load-bearing capacity can be increased.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Foundations (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un profil de fondation (100, 200, 300, 400, 500) pour une structure en haute mer (220), comprenant: une partie d'extrémité de profil (104, 204, 304, 404, 504) qui, avec le profil de fondation (100, 200, 300, 400, 500) dans l'état prévu, est disposée dans un sol de fondation en haute mer (222) ; et au moins un corps creux allongé (106, 206, 306, 406, 506) qui, dans l'état prévu, est disposé sur la partie d'extrémité de profil (104, 204, 304, 404, 504) et qui est conçu pour recevoir un matériau gonflant (118, 218).
EP21728879.4A 2020-06-23 2021-05-25 Profil de fondation pour une structure en haute mer Withdrawn EP4168632A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020116518.8A DE102020116518A1 (de) 2020-06-23 2020-06-23 Gründungsprofil für ein Offshore-Bauwerk
PCT/EP2021/063861 WO2021259576A1 (fr) 2020-06-23 2021-05-25 Profil de fondation pour une structure en haute mer

Publications (1)

Publication Number Publication Date
EP4168632A1 true EP4168632A1 (fr) 2023-04-26

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EP21728879.4A Withdrawn EP4168632A1 (fr) 2020-06-23 2021-05-25 Profil de fondation pour une structure en haute mer

Country Status (6)

Country Link
US (1) US20230127746A1 (fr)
EP (1) EP4168632A1 (fr)
JP (1) JP2023529752A (fr)
KR (1) KR20230003008A (fr)
DE (1) DE102020116518A1 (fr)
WO (1) WO2021259576A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832857A (en) * 1973-05-07 1974-09-03 Nelson C Shields Pressure grouting
CA1017957A (fr) * 1973-08-14 1977-09-27 Shields, C. Nelson (Jr.) (Trustee) Foncage par pression
FR2323822A1 (fr) * 1975-09-11 1977-04-08 Metalliques Entrepr Cie Fse Perfectionnements apportes aux procedes et dispositifs pour l'ancrage, sur un fond sous-marin, d'une plate-forme off-shore ou analogue
JPS5733699A (en) * 1980-08-07 1982-02-23 Amano Kigiyou Kk Lock anchoring and device used therefor
GB8406847D0 (en) * 1984-03-16 1984-04-18 Earl & Wright Ltd Installing pile
JP2844344B2 (ja) * 1989-04-20 1999-01-06 日特建設株式会社 グランドアンカー組立体及びグランドアンカー工法
JPH03295927A (ja) * 1990-04-16 1991-12-26 Asahi Chem Ind Co Ltd 既製杭装着用袋体
JP2007262811A (ja) * 2006-03-29 2007-10-11 Nippon Hume Corp 杭構造とその杭材埋め込み工法
JP5378860B2 (ja) * 2009-03-31 2013-12-25 住友林業株式会社 軟弱地盤における建物の基礎構造
JP2011084923A (ja) * 2009-10-15 2011-04-28 Nippon Steel Engineering Co Ltd 鋼管杭基礎の止水構造および鋼管杭基礎の施工方法
US9970171B2 (en) * 2014-08-04 2018-05-15 James Lee Passive grout seal
CN106087993A (zh) * 2016-07-29 2016-11-09 成都城电电力工程设计有限公司 一种新型螺纹灌注桩及灌注施工方法
JP6786419B2 (ja) * 2017-02-24 2020-11-18 鹿島建設株式会社 風力発電機の構築方法、及び風力発電機の構築構造
DE102017121037A1 (de) 2017-09-12 2019-03-28 Technische Universität Hamburg-Harburg Verfahren zur Tragfähigkeitsverbesserung von im Baugrund gesetzten Profilen sowie Profil dafür
DE102019109733A1 (de) 2019-04-12 2020-10-15 Innogy Se Beschichtung für Gründung

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JP2023529752A (ja) 2023-07-11
KR20230003008A (ko) 2023-01-05
US20230127746A1 (en) 2023-04-27
WO2021259576A1 (fr) 2021-12-30
DE102020116518A1 (de) 2021-12-23

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