CN103132521A - Undersea suction anchor - Google Patents

Undersea suction anchor Download PDF

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Publication number
CN103132521A
CN103132521A CN201310091856XA CN201310091856A CN103132521A CN 103132521 A CN103132521 A CN 103132521A CN 201310091856X A CN201310091856X A CN 201310091856XA CN 201310091856 A CN201310091856 A CN 201310091856A CN 103132521 A CN103132521 A CN 103132521A
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CN
China
Prior art keywords
anchor
barrel
main cylinder
branch
skirt
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Granted
Application number
CN201310091856XA
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Chinese (zh)
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CN103132521B (en
Inventor
刘红军
李洪江
王虎
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Ocean University of China
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Ocean University of China
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Priority to CN201310091856.XA priority Critical patent/CN103132521B/en
Publication of CN103132521A publication Critical patent/CN103132521A/en
Application granted granted Critical
Publication of CN103132521B publication Critical patent/CN103132521B/en
Expired - Fee Related legal-status Critical Current
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017Means for protecting offshore constructions
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056Platforms with supporting legs
    • E02B2017/0073Details of sea bottom engaging footing
    • E02B2017/0078Suction piles, suction cans

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses an undersea suction anchor which comprises a main drum, a top face of the main barrel is sealed, a lower end of the main barrel is opened, and a main barrel drainage hole is arranged on the top face of the main drum. The undersea suction anchor is characterized in that a barrel skirt is movably sleeved on the main drum, the barrel skirt comprises a horizontal top face and a barrel-shaped lateral wall, a barrel skirt drainage hole is formed in the horizontal top face of the barrel skirt, a telescopic hook locating the barrel skirt at the upper portion of the main barrel is arranged on the barrel-shaped lateral wall at the upper portion of the main barrel, an anchor ring concentric with the main barrel is arranged at the upper end of the main barrel, anchor branches are evenly arranged on the anchor ring, one ends of the anchor branches are hinged to the anchor ring, and the other ends of the anchor branches are hinged to the barrel skirt through inclined support rods. The whole vertical section of the suction anchor is in an umbrella shape, in the sinking process of the anchor body, along with landing-on-seabed of the barrel skirt, the anchor branches are driven by the inclined support rods to be gradually opened, and after the main barrel sinking is finished, the anchor branches cling to the surface of the seabed in a horizontal extending mode. The undersea suction anchor can improve the integral stability of the suction anchor, increases pulling resistance and horizontal bearing force, and reinforces wave-corrosion-resistance performance.

Description

A kind of sea floor suction anchor
Technical field
The invention belongs to offshore wind farm engineering and field of ocean engineering, relate to offshore blower foundation, ocean platform mooring, keg float location, beacon, jacket structure basis, is a kind of sea floor suction anchor specifically.
Background technology
Along with the accelerated development of marine oil and gas resource exploitation and the emergence day by day of offshore wind power generation, the basic engineering of marine drilling platform and marine wind electric field becomes an important topic in this field.Suction anchor is as a kind of novel offshore structure facility, has been widely used in the fields such as ship mooring, keg float location, storage facility, beacon, jacket and ocean platform.The suction anchor foundation class is similar to the rigidity stub, and using maximum suction anchors in Practical Project is the barrel shape structure of a kind of top closure, lower ending opening, and anchor cylinder side-wall material is steel, and anchor cylinder top cover leaves suction eye with the connection pipeline that draws water.Its sinking comprises two stages successively: be at first heavy the passing through the stage of pressure under deadweight and load effect; Next is the inside and outside pressure reduction that relies on submersible pump to continue to draw water to produce on suction anchor and heavy the passing through the stage of suction that causes.
The suction anchor that uses both at home and abroad at present mainly contains: gravity suction anchor, Double-cylinder type suction anchor, self-installed suction anchor etc.
Type gravity suction anchor is the steel work that changes traditional anchor top sheet steel structure into reinforced concrete structure or add ballast, thereby increase sinker power and the sinker degree of depth, but because it is from great, the drawback that in use, existence is installed and reclaimer operation is complicated, cost is high, moreover, more than its counter weight construction was positioned at seabed mud face, eddy flow washed away the soil body, and the phenomenon that reduces the suction anchor anchored force is inevitable.
Double-cylinder type suction anchor belongs to the remodeling of the barrel-shaped suction anchor of water floating body mooring gear, namely adds a urceolus that diameter is little greatly and highly on traditional single-cylinder type suction anchor basis, then binds and form bitubular anchor with common top board.Although this structure can improve the vertical bearing capacity of anchor body but can not effectively improve the standard bearing capacity and resistance to overturning do not have too large effect to the erosion that improves seabed soil yet.
The characteristics of self-installed suction anchor are to realize sink smoothly by controlled water injection in sealed top cabin, by to cabin internal drainage, exhaust decompression, form up and down, anchor top pressure reduction, realize the suction injection, its advantage is " self-floating towing, sink smoothly ", but its recycling rate of waterused is low, also not too large improvement aspect bearing capacity and resistance to overturning.
Summary of the invention
The problems referred to above that the present invention exists for solving prior art provide a kind of sea floor suction anchor, improve the resistance to overturning of suction anchor, increase uplift resistance, horizontal bearing capacity and anti-wave erosion ability, and simple installation, and recycling rate of waterused is high.
The objective of the invention is to be achieved through the following technical solutions:
A kind of sea floor suction anchor, the main cylinder that comprises end face sealing, lower ending opening, main cylinder end face arranges main cylinder drain hole, it is characterized in that, outer kink one sheath skirt of described main cylinder, described sheath skirt comprises horizontal top surface and cylindrical sidewall, on described sheath skirt horizontal top surface, the sheath skirt drain hole is set, on the cylindrical sidewall on described main cylinder top, the telescopic hook that described sheath skirt is positioned at described main cylinder top is set, arrange in main cylinder upper end one with the anchor ring of main cylinder concentric, the anchor branch evenly is set on anchor ring, and an end and the anchor ring of described anchor branch are hinged, and the other end is hinged by hound and sheath skirt.
To improvement of the technical scheme: described anchor ring diameter is consistent with described sheath skirt cylindrical sidewall diameter, and described anchor ring is fixed together by carrier bar and main cylinder upper end.
To further improvement in the technical proposal: described anchor branch is uniform foraminate metal sheet roof covering.
To further improvement in the technical proposal: described anchor branch upwards extends at most level, and described anchor branch is contracted at most plumbness downwards.
To further improvement in the technical proposal: described hound length is 1/2 of anchor branch length, and an end of described hound is hinged on the outer of sheath skirt end face, and the centre of the other end of hound and described anchor branch is hinged.
To further improvement in the technical proposal: the length of described anchor branch be main cylinder diameter 1-1.5 doubly, the cylindrical sidewall diameter of described sheath skirt be described main cylinder the cylindrical sidewall diameter 1.5-2 doubly.
The present invention compared with prior art has the following advantages and good effect:
Seabed provided by the present invention umbrella formula suction anchor has increased the resistance to overturning of suction anchor by the design of sheath skirt and anchor branch, prevented that seabed soil around main cylinder from suffering the harm of wave erosion.The interpolation of sheath skirt has increased the contact area of whole anchor body and the soil body, thereby has increased frictional resistance, and the uplift resistance of suction anchor and horizontal bearing capacity are significantly increased.Sheath skirt is again independent design, can change allotment according to different engineerings, has avoided in the past sheath skirt to be connected with main cylinder one, the drawback that can not change.Suction anchor is in the initial sinking stage, and the free lowering of sheath skirt is positioned at the lower end of main cylinder, has overcome the top-heavy defective of traditional suction anchor, under keep steady, be easy to locate.The lasting dynamic response of anchor branch before the anchor body arrives target depth well guaranteed the subsidence velocity of main cylinder, can avoid the appearance of " soil plug " phenomenon.After suction anchor sank to finishing, anchor branch and sea bed mud face were affixed, and in the erosion of control sea bed, had consisted of integral body with main cylinder, had increased the ability of main cylinder overturning or slip resistance analysis, simultaneously the dynamic loadings such as wind, wave, stream were also had the energy dissipating effect.The design of telescopic hook has guaranteed that the anchor branch is in open configuration upper in pulling out removal process all the time, and the buoyancy of anchor branch has alleviated recovery difficult, has reduced cost.
Description of drawings
Fig. 1 is the stereogram of the present invention a kind of seabed umbrella formula suction anchor;
Fig. 2 is the sectional drawing along main cylinder axis in Fig. 1;
Fig. 3 is the anchor branch full extension state top view of a kind of seabed umbrella formula suction anchor;
Fig. 4 is the anchor branch deployed condition schematic diagram not yet of a kind of seabed umbrella formula suction anchor;
Fig. 5 is the schematic diagram in the anchor branch stretching process of a kind of seabed umbrella formula suction anchor;
Fig. 6 is the anchor branch full extension view of a kind of seabed umbrella formula suction anchor.
In figure: 1-master's cylinder, 2-sheath skirt, 3-anchor ring, 4-anchor branch, 5-hound, 6-telescopic hook, 7-carrier bar, 8-master's cylinder drain hole, 9-sheath skirt drain hole.
The specific embodiment
Referring to accompanying drawing 1-Fig. 3, the embodiment of the present invention a kind of seabed umbrella formula suction anchor comprises the main cylinder 1 of end face sealing, lower ending opening, and main cylinder 1 end face arranges main cylinder drain hole 8.At main cylinder 2 outer kink one sheath skirts 2, described sheath skirt 2 comprises horizontal top surface and cylindrical sidewall, on described sheath skirt horizontal top surface, sheath skirt drain hole 9 is set.Be symmetrical arranged two telescopic hooks 6 that described sheath skirt are positioned at described main cylinder top on the cylindrical sidewall on main cylinder 1 top.Arrange in main cylinder 1 upper end one with the anchor ring 3 of main cylinder 1 concentric, anchor branch 4 evenly is set on anchor ring 3, an end and the anchor ring 3 of described anchor branch 4 are hinged, the other end is hinged by hound 5 and sheath skirt 2.Anchor branch 4 is uniform foraminate metal sheet roof coverings, and anchor branch 4 upwards extends at most level, and described anchor branch is contracted at most plumbness downwards.
Preferred structure is: the diameter of anchor ring 3 is consistent with sheath skirt 2 lateral wall diameters, and described anchor ring 3 is fixed together by four carrier bars 7 and main 1 upper end.Hound 5 length are 1/2 of anchor branch 4 length, and an end of hound 5 is hinged on the outer of sheath skirt 2 end faces, and the centre of the other end of hound 5 and described anchor branch 4 is hinged.The length of anchor branch 4 be main cylinder 1 diameter 1-1.5 doubly, the cylindrical sidewall diameter of sheath skirt 2 be main cylinder 1 the cylindrical sidewall diameter 1.5-2 doubly.
Wall thickness, the draw ratio of main cylinder 1 and sheath skirt 2 can be designed as plurality of specifications according to actual demands of engineering.
Fig. 4~Fig. 6 shows the marine installation process of seabed umbrella formula suction anchor.At first use loop wheel machine to be hooked on anchor ring 3, suction anchor is vertically placed on sea bed, main cylinder 1 is injection sea bed certain depth under deadweight and the additional force effects such as sheath skirt 2, anchor branch 4, as shown in Figure 4; Sheath skirt 2 begins to contact sea bed subsequently, at this moment with main cylinder outfall 8 sealings, continues to extracardiac pumping with submersible pump, reduce the pressure of main cylinder 1 inside, the lower penetration force that inside and outside pressure reduction produces impels suction anchor to continue to sink, and at this moment anchor branch 4 can slowly open under the drive of hound 5, as shown in Figure 5; Along with drawing water continuously, suction anchor keeps heavy and passes through, until the inside top surface of main cylinder 1 and sheath skirt 2 is all with till sea bed mud face contacts, at this moment, 2 of sheath skirts are blocked by telescopic hook 6, consist of whole with main cylinder 1, anchor branch 4 also all opens, and tightly is affixed with the sea bed face, as shown in Figure 6; At last, shed submersible pump, main cylinder 1 inside and outside differential pressure dribbles, and closes pump mouth when internal pressure returns to ambient pressure, and suction anchor is installed and finished.
Because the sheath skirt 2 of peripheral hardware is independently, visual different engineering demands under the prerequisite that does not change main cylinder 1, are replaced separately sheath skirt 2 and are used in practical operation.
Anchor ring 3 is fixed on main cylinder 1, and can be used as handle and hanging is hanging point.Anchor branch 4 is connected with anchor ring 3, belongs to half hinged, and with after horizontal plane is consistent, subtended angle no longer increases, and resists the load that topples together with main cylinder 1 at opening angle.Anchor branch 4 the down force that has increased on the one hand suction anchor is set, the aperture on it has played the effect of anti-wave erosion on the other hand, and is the same with sheath skirt 2, anchor branch 4 also can be replaced separately, recycle.
Telescopic hook 6 is fixed on one with sheath skirt 2 and main cylinder 1 after suction anchor sinks to completing, in removal process, guarantee that anchor branch 4 is in open configuration all the time, and the buoyancy of anchor branch 4 can alleviate working load.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of having done, remodeling, interpolation or replacement also should belong to protection scope of the present invention.

Claims (9)

1. sea floor suction anchor, comprise the end face sealing, the main cylinder of lower ending opening, main cylinder end face arranges main cylinder drain hole, it is characterized in that, outer kink one sheath skirt of described main cylinder, described sheath skirt comprises horizontal top surface and cylindrical sidewall, on described sheath skirt horizontal top surface, the sheath skirt drain hole is set, on the cylindrical sidewall on described main cylinder top, the telescopic hook that described sheath skirt is positioned at described main cylinder top is set, arrange in main cylinder upper end one with the anchor ring of main cylinder concentric, the anchor branch evenly is set on anchor ring, one end and the anchor ring of described anchor branch are hinged, the other end is hinged by hound and sheath skirt.
2. according to sea floor suction anchor claimed in claim 1, it is characterized in that, described anchor ring diameter is consistent with described sheath skirt cylindrical sidewall diameter, and described anchor ring is fixed together by carrier bar and main upper end.
3. according to the described sea floor suction anchor of claim 1 or 2, it is characterized in that, described anchor branch is uniform foraminate metal sheet roof covering.
4. according to the described sea floor suction anchor of claim 1 or 2, it is characterized in that, described anchor branch upwards extends at most level, and described anchor branch is contracted at most plumbness downwards.
5. according to sea floor suction anchor claimed in claim 3, it is characterized in that, described anchor branch upwards is stretched at most level, and described anchor branch is contracted at most plumbness downwards.
6. according to the described sea floor suction anchor of claim 1 or 2, it is characterized in that, described hound length is 1/2 of anchor branch length, and an end of described hound is hinged on the outer of sheath skirt end face, and the centre of the other end of hound and described anchor branch is hinged.
7. according to sea floor suction anchor claimed in claim 5, it is characterized in that, described hound length is 1/2 of anchor branch length, and an end of described hound is hinged on the outer of sheath skirt end face, and the centre of the other end of hound and described anchor branch is hinged.
8. according to the described sea floor suction anchor of claim 1 or 2, it is characterized in that, the length of described anchor branch be main cylinder diameter 1-1.5 doubly, the cylindrical sidewall diameter of described sheath skirt be described main cylinder the cylindrical sidewall diameter 1.5-2 doubly.
9. according to sea floor suction anchor claimed in claim 7, it is characterized in that, the length of described anchor branch be main cylinder diameter 1-1.5 doubly, the cylindrical sidewall diameter of described sheath skirt be described main cylinder the cylindrical sidewall diameter 1.5-2 doubly.
CN201310091856.XA 2013-03-21 2013-03-21 Undersea suction anchor Expired - Fee Related CN103132521B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN103132521B CN103132521B (en) 2015-01-21

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103600812A (en) * 2013-11-13 2014-02-26 青岛迪玛尔海洋工程有限公司 Suction anchor with attached skirt
CN103967011A (en) * 2014-05-07 2014-08-06 孔超 Recyclable umbrella-shaped pressure-bearing ground anchor in soft soil stratum
CN105178325A (en) * 2015-08-28 2015-12-23 中国海洋大学 Mounting device and mounting method of umbrella type seabed suction anchor foundation
CN106639896A (en) * 2017-02-24 2017-05-10 重庆科技学院 Deep-water drilling guide pipe drilling supporting device and drilling-in parameter design method
CN106759200A (en) * 2016-11-22 2017-05-31 天津城建大学 The new low skirt-type suction pile in seabed
CN107031792A (en) * 2017-03-22 2017-08-11 湖北海洋工程装备研究院有限公司 The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device
EP3228754A1 (en) * 2016-04-05 2017-10-11 SPT Equipment BV Scour protection for suction pile, e.g. pile lowering operated
CN108528636A (en) * 2018-04-04 2018-09-14 合肥学院 A kind of suction penetration type tablet anchor with circular arc fixed plate
CN108528638A (en) * 2018-04-04 2018-09-14 合肥学院 A kind of arc-shaped combination anchor of the suction penetration type with wing plate
CN108575844A (en) * 2018-05-31 2018-09-28 中国水产科学研究院东海水产研究所 Integrated movable off-lying sea cultivation fence
CN109972642A (en) * 2019-04-03 2019-07-05 中交第三航务工程勘察设计院有限公司 A kind of barrel type structure drainage device and installation method
CN110001870A (en) * 2019-03-26 2019-07-12 杭州中岩工程科技有限公司 Intermittent sink of suction anchor passes through device and sinking penetrating method
CN111877332A (en) * 2020-06-17 2020-11-03 东南大学 Seabed anchoring system
CN113978620A (en) * 2021-11-24 2022-01-28 中国船舶科学研究中心 Rapid deployment anchoring system and use method
CN115045331A (en) * 2022-05-31 2022-09-13 天津城建大学 Sliding type submarine skirt type suction bucket and construction method thereof
CN115354682A (en) * 2022-07-21 2022-11-18 山东科技大学 Ocean anchoring foundation and using method thereof
WO2023003476A1 (en) 2021-07-23 2023-01-26 Offshore Wind Design As A suction anchor system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349127Y (en) * 1998-09-21 1999-11-17 天津市海王星海上工程技术有限公司 Double-cylinder type suction anchor
US6240871B1 (en) * 1999-10-18 2001-06-05 Steven M. Courtheyn Secure mooring connection anchor
CN201581410U (en) * 2009-10-14 2010-09-15 山东科技大学 Seafloor skirt-type suction anchor
CN102556285A (en) * 2011-12-23 2012-07-11 浙江海洋学院普陀科学技术学院 Net cage module anchor
CN202743442U (en) * 2012-08-30 2013-02-20 余光明 Buried reinforced concrete split-type anchor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349127Y (en) * 1998-09-21 1999-11-17 天津市海王星海上工程技术有限公司 Double-cylinder type suction anchor
US6240871B1 (en) * 1999-10-18 2001-06-05 Steven M. Courtheyn Secure mooring connection anchor
CN201581410U (en) * 2009-10-14 2010-09-15 山东科技大学 Seafloor skirt-type suction anchor
CN102556285A (en) * 2011-12-23 2012-07-11 浙江海洋学院普陀科学技术学院 Net cage module anchor
CN202743442U (en) * 2012-08-30 2013-02-20 余光明 Buried reinforced concrete split-type anchor

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103600812A (en) * 2013-11-13 2014-02-26 青岛迪玛尔海洋工程有限公司 Suction anchor with attached skirt
CN103600812B (en) * 2013-11-13 2015-10-07 青岛迪玛尔海洋工程有限公司 With the suction anchor of attached skirts
CN103967011A (en) * 2014-05-07 2014-08-06 孔超 Recyclable umbrella-shaped pressure-bearing ground anchor in soft soil stratum
CN103967011B (en) * 2014-05-07 2015-12-09 孔超 Callable umbrella pressure-bearing earth anchor in a kind of soft soil layer
CN105178325A (en) * 2015-08-28 2015-12-23 中国海洋大学 Mounting device and mounting method of umbrella type seabed suction anchor foundation
EP3228754A1 (en) * 2016-04-05 2017-10-11 SPT Equipment BV Scour protection for suction pile, e.g. pile lowering operated
CN106759200A (en) * 2016-11-22 2017-05-31 天津城建大学 The new low skirt-type suction pile in seabed
CN106639896B (en) * 2017-02-24 2018-08-10 重庆科技学院 Deepwater drilling conduit is with brill support device and tripping in Parameters design
CN106639896A (en) * 2017-02-24 2017-05-10 重庆科技学院 Deep-water drilling guide pipe drilling supporting device and drilling-in parameter design method
CN107031792A (en) * 2017-03-22 2017-08-11 湖北海洋工程装备研究院有限公司 The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device
CN107031792B (en) * 2017-03-22 2019-05-07 湖北海洋工程装备研究院有限公司 The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device
CN108528636A (en) * 2018-04-04 2018-09-14 合肥学院 A kind of suction penetration type tablet anchor with circular arc fixed plate
CN108528638A (en) * 2018-04-04 2018-09-14 合肥学院 A kind of arc-shaped combination anchor of the suction penetration type with wing plate
CN108528638B (en) * 2018-04-04 2020-04-10 合肥学院 Suction injection type arc-shaped combined anchor with wing plates
CN108575844B (en) * 2018-05-31 2023-11-21 中国水产科学研究院东海水产研究所 Whole movable open sea cultivation fence
CN108575844A (en) * 2018-05-31 2018-09-28 中国水产科学研究院东海水产研究所 Integrated movable off-lying sea cultivation fence
CN110001870A (en) * 2019-03-26 2019-07-12 杭州中岩工程科技有限公司 Intermittent sink of suction anchor passes through device and sinking penetrating method
CN110001870B (en) * 2019-03-26 2020-07-10 杭州中岩工程科技有限公司 Suction anchor intermittent penetration device and penetration method
CN109972642A (en) * 2019-04-03 2019-07-05 中交第三航务工程勘察设计院有限公司 A kind of barrel type structure drainage device and installation method
CN109972642B (en) * 2019-04-03 2024-03-19 中交第三航务工程勘察设计院有限公司 Bucket-type structure drainage device and installation method
CN111877332A (en) * 2020-06-17 2020-11-03 东南大学 Seabed anchoring system
WO2023003476A1 (en) 2021-07-23 2023-01-26 Offshore Wind Design As A suction anchor system
NO346861B1 (en) * 2021-07-23 2023-02-06 Offshore Wind Design As A suction anchor system
CN113978620A (en) * 2021-11-24 2022-01-28 中国船舶科学研究中心 Rapid deployment anchoring system and use method
CN113978620B (en) * 2021-11-24 2022-12-27 中国船舶科学研究中心 Rapid deployment anchoring system and use method
CN115045331A (en) * 2022-05-31 2022-09-13 天津城建大学 Sliding type submarine skirt type suction bucket and construction method thereof
CN115354682A (en) * 2022-07-21 2022-11-18 山东科技大学 Ocean anchoring foundation and using method thereof
CN115354682B (en) * 2022-07-21 2023-10-03 山东科技大学 Ocean anchoring foundation and application method thereof

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