CN110541390A - Device for reducing hydrodynamic load and motion response of marine structure - Google Patents
Device for reducing hydrodynamic load and motion response of marine structure Download PDFInfo
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- CN110541390A CN110541390A CN201910879087.7A CN201910879087A CN110541390A CN 110541390 A CN110541390 A CN 110541390A CN 201910879087 A CN201910879087 A CN 201910879087A CN 110541390 A CN110541390 A CN 110541390A
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- hollow plate
- platform
- damper
- upright post
- kinetic energy
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- 230000004044 response Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004083 survival effect Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 4
- 238000011160 research Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/062—Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
the invention provides a device for reducing hydrodynamic load and motion response of a marine structure, which comprises a platform upright post, a through hollow plate and a damper, wherein the through hollow plate is hinged on the platform upright post, one end of the damper is connected with the through hollow plate, the other end of the damper is connected with the platform upright post, the through hollow plate is arranged on the open water area side of the platform upright post and is arranged in a rectangular shape, the extending width of the through hollow plate is 1/3 of the size width of the platform upright post, the kinetic energy of water particles can be converted into turbulent kinetic energy through the through hollow plate, the effect of dissipating wave energy is further achieved, and the damper connected with the through hollow plate can absorb the kinetic energy of the through hollow plate. In a word, the device can reduce the kinetic energy of incident wave energy, reduce the wave exciting force acting on the floating body and further improve the survival capability of the ocean platform.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to a device for reducing hydrodynamic load and motion response of a marine structure.
background
the environmental pollution problem is increasingly prominent due to the gradual consumption of fossil energy such as coal, petroleum and natural gas, and the development and utilization of marine energy as a clean renewable energy are gradually paid attention from various countries. The ocean engineering structure provides a reliable working surface for developing various ocean resources for human beings, but the survival and operation of the structure often face various severe ocean environment loads, and the wave load occupies a dominant position in the aspect of influencing the survival and normal operation of the structure. Ocean engineering structures, such as various fixed and mobile ocean platforms, offshore wind turbines, offshore floating structures, sea-crossing bridges and the like, can be subjected to the action of wave excitation force in a certain range above and below a still water surface. The safety, stability and working performance of various ocean engineering structures depend on the dynamic response and the motion response of the various ocean engineering structures under the wave excitation force. At present, research on ocean engineering structures focuses on the research on structural power and motion response, the research on fatigue failure of platforms, the research on riser vortex-induced vibration, the research on response analysis of anchoring systems and the like.
Among them, for various floating marine structures, the dynamic and motion response of the structure under the action of wave excitation force is the focus of current research. For example, for a conventional semi-submersible platform, the response of wave-excited swaying and surging is small, but the response of heaving is large, and one method for improving the response of large-amplitude heaving is to lower the center of gravity of the platform and increase the platform draught, and the method can cause the columnar structure with deep draught to easily cause vortex-induced vibration. The problem of reducing the wave exciting force under the condition of not increasing the draught so as to reduce the dynamic response of the platform has great scientific research and engineering significance.
The use of the open-air plate for reducing wave force starts from the research on the breakwater, the simplest open-air breakwater is a single thin plate breakwater with a structure like Qiu torrent and the like [1], the wave-absorbing effect of the open-hole inclined flat plate is researched by [2] like Wangbuy and the like [3], the result shows that the incident waves with short period can be attenuated by more than 50 percent, the wave-absorbing performance of the double-layer horizontal plate type open-air breakwater is researched by the Tangling and the like [3], the wave-absorbing effect of the double-layer horizontal plate type open-air breakwater is found to be better, the loss degree of the wave energy is larger, and numerous researches show that the open-air plate has a remarkable effect on the dissipation of the wave energy.
Disclosure of Invention
The object of the present invention is to provide a method of reducing hydrodynamic loads and motion response of marine structures for the viability of high offshore platforms under normal sea conditions and extreme sea conditions.
The purpose of the invention is realized as follows:
The utility model provides a reduce device of marine structure hydrodynamic load and motion response, includes platform stand, passes through empty board and attenuator, it articulates on the platform stand to pass through empty board, attenuator one end is connected with passing through empty board, and the other end is connected with the platform stand.
the invention also includes such features:
1. The through hollow plates are arranged on the open water area side of the platform upright column and are arranged in a rectangular shape;
2. the protruding width of the hollow board is 1/3 of the size width of the platform upright post.
Compared with the prior art, the invention has the beneficial effects that:
the invention can convert the kinetic energy of water particles into turbulent kinetic energy through the through-hollow plate, thereby playing a role of dissipating wave energy, and the damper connected with the through-hollow plate can absorb the kinetic energy of the through-hollow plate. In a word, the device can reduce the kinetic energy of incident wave energy, reduce the wave exciting force acting on the floating body and further improve the survival capability of the ocean platform.
Drawings
FIG. 1 is a schematic diagram of the cell structure of the present invention;
FIG. 2 is a right side view of the cell structure of the present invention;
FIG. 3 is a front view of the cell structure of the present invention;
FIG. 4 is a top view of a cell structure of the present invention;
Fig. 5 is a schematic diagram of the practical engineering application of the present invention.
wherein: 1 is a platform upright post, 2 is a damper, 3 is a hinge, and 4 is a hollow plate
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A device for reducing hydrodynamic load and motion response of a marine structure simultaneously applies a through plate and a damper to a floating marine platform, and achieves the purpose of inhibiting the motion response of the platform by utilizing the advantage that the through plate and the damper dissipate wave energy. The permeable plate is positioned below the water surface, the kinetic energy of the water particle is converted into turbulent kinetic energy by destroying the vertical motion track of the wave water particle, so that the effect of dissipating the wave energy is achieved, the damper absorbs the kinetic energy generated by the movement of the permeable plate, the kinetic energy and the turbulent kinetic energy dissipate the wave energy together, and the purposes of reducing the structure hydrodynamic load and motion response are achieved. The method can be applied to any ocean platform with a column structure. Mainly comprises a through hollow plate 4, a damper 2 and a platform upright post 1. The permeable plate 4 is arranged on the side of the wet surface of the platform upright column, the permeable plate 4 is connected with the platform upright column 1 in a hinged mode, the permeable plate 4 rotates around the hinge 3 under the action of waves, one end of the damper 2 is connected with the permeable plate 4, and the other end of the damper is connected to the platform upright column 1; the permeable plate 4 is arranged on the open water area side of the platform upright post 1 and is arranged in a rectangular shape, so that wave energy can be dissipated to the maximum extent, and the permeable plate is connected with the platform upright post 1 in a hinged mode, so that the survival capability of the permeable plate 4 is improved; the damper 2 can absorb the kinetic energy of the through hollow plate, further dissipate the wave energy, reduce the wave exciting force acting on the floating body and further improve the stability of the floating body; the transparent plate 4 and the damper 2 are connected to the platform upright post 1, so that the cost for building a device foundation is saved, the size is small, excessive space resources are not occupied, and the influence on the ocean platform is small.
The energy dissipation device is suitable to be arranged near the working normal water level of the ocean platform, and can attenuate waves transmitted from the open sea to the maximum extent based on the characteristic that wave energy distribution is concentrated on the surface layer of the water body. The specific installation position is determined according to the actual situation of the project and can be flexibly changed.
The connecting position of the damper 2 and the hollow plate 4 is suitable to be arranged at a reasonable position close to the edge of the plate, so that the stretching speed of the tension and compression damper 2 is relatively high, and the absorption of kinetic energy of the hollow plate 4 by the tension and compression damper is further increased. The type of damper may be a hydraulic damper or other type of damper.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a reduce device of marine structure hydrodynamic load and motion response, characterized by, includes platform stand, passes through empty board and attenuator, it articulates on the platform stand to pass through empty board, attenuator one end with pass through empty board and be connected, the other end is connected with the platform stand.
2. The apparatus for reducing hydrodynamic loading and motion response of a marine structure as recited in claim 1, wherein said perforated plate is disposed on the open water side of the platform column in a rectangular arrangement.
3. An apparatus for reducing hydrodynamic loading and motion response of a marine structure as claimed in claim 1 or claim 2, wherein the panel extends a width 1/3 of the width of the dimension of the platform column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879087.7A CN110541390A (en) | 2019-09-18 | 2019-09-18 | Device for reducing hydrodynamic load and motion response of marine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879087.7A CN110541390A (en) | 2019-09-18 | 2019-09-18 | Device for reducing hydrodynamic load and motion response of marine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110541390A true CN110541390A (en) | 2019-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910879087.7A Pending CN110541390A (en) | 2019-09-18 | 2019-09-18 | Device for reducing hydrodynamic load and motion response of marine structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110541390A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10157691A (en) * | 1996-11-29 | 1998-06-16 | Mitsubishi Heavy Ind Ltd | Extra-large floating body |
| US20050175414A1 (en) * | 2004-02-10 | 2005-08-11 | Abbott Phillip A. | Inclined leg floating production platform with a damper plate |
| US20100024705A1 (en) * | 2008-07-30 | 2010-02-04 | Seahorse Equipment Corp. | Drag-inducing stabilizer plates with damping apertures |
| CN202730708U (en) * | 2012-06-25 | 2013-02-13 | 河海大学 | Cable-stayed mechanism with moving wave-blocking plate type anti-wave wall |
| JP2014061848A (en) * | 2012-09-24 | 2014-04-10 | Mitsui Eng & Shipbuild Co Ltd | Floating body structure and swing reduction device of the same |
| CN105756848A (en) * | 2016-02-22 | 2016-07-13 | 江苏科技大学 | Tuning permeable vibration-damping power generation device for ultra-large floating structure |
| CN107288807A (en) * | 2017-07-24 | 2017-10-24 | 上海交通大学 | Many buoyant raft wave energy generating sets with vibration suppressing plate |
| CN107327364A (en) * | 2017-08-28 | 2017-11-07 | 张耀辰 | A kind of TRT of utilization wave vertical fluctuation energy |
| CN107380369A (en) * | 2017-07-18 | 2017-11-24 | 杨雪龙 | A kind of ships and light boats with damping device |
| CN107416134A (en) * | 2017-08-18 | 2017-12-01 | 浙江海洋大学 | A kind of horizontal system of easily fluidised form load-carring transport cargo hold swings device |
| CN109911100A (en) * | 2019-04-17 | 2019-06-21 | 江苏科技大学 | A kind of high-speed craft having additional spin characteristics and its control method |
| CN209307943U (en) * | 2018-10-22 | 2019-08-27 | 苏州开端机电科技有限公司 | A kind of tension leg anchor system can descend submerged floating shielding and breakwater |
| CN210737456U (en) * | 2019-09-18 | 2020-06-12 | 哈尔滨工程大学 | Device for reducing hydrodynamic load and motion response of marine structure |
-
2019
- 2019-09-18 CN CN201910879087.7A patent/CN110541390A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10157691A (en) * | 1996-11-29 | 1998-06-16 | Mitsubishi Heavy Ind Ltd | Extra-large floating body |
| US20050175414A1 (en) * | 2004-02-10 | 2005-08-11 | Abbott Phillip A. | Inclined leg floating production platform with a damper plate |
| US20100024705A1 (en) * | 2008-07-30 | 2010-02-04 | Seahorse Equipment Corp. | Drag-inducing stabilizer plates with damping apertures |
| CN202730708U (en) * | 2012-06-25 | 2013-02-13 | 河海大学 | Cable-stayed mechanism with moving wave-blocking plate type anti-wave wall |
| JP2014061848A (en) * | 2012-09-24 | 2014-04-10 | Mitsui Eng & Shipbuild Co Ltd | Floating body structure and swing reduction device of the same |
| CN105756848A (en) * | 2016-02-22 | 2016-07-13 | 江苏科技大学 | Tuning permeable vibration-damping power generation device for ultra-large floating structure |
| CN107380369A (en) * | 2017-07-18 | 2017-11-24 | 杨雪龙 | A kind of ships and light boats with damping device |
| CN107288807A (en) * | 2017-07-24 | 2017-10-24 | 上海交通大学 | Many buoyant raft wave energy generating sets with vibration suppressing plate |
| CN107416134A (en) * | 2017-08-18 | 2017-12-01 | 浙江海洋大学 | A kind of horizontal system of easily fluidised form load-carring transport cargo hold swings device |
| CN107327364A (en) * | 2017-08-28 | 2017-11-07 | 张耀辰 | A kind of TRT of utilization wave vertical fluctuation energy |
| CN209307943U (en) * | 2018-10-22 | 2019-08-27 | 苏州开端机电科技有限公司 | A kind of tension leg anchor system can descend submerged floating shielding and breakwater |
| CN109911100A (en) * | 2019-04-17 | 2019-06-21 | 江苏科技大学 | A kind of high-speed craft having additional spin characteristics and its control method |
| CN210737456U (en) * | 2019-09-18 | 2020-06-12 | 哈尔滨工程大学 | Device for reducing hydrodynamic load and motion response of marine structure |
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