US20150152614A1 - Energy Dissipator - Google Patents

Energy Dissipator Download PDF

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US20150152614A1
US20150152614A1 US14/414,954 US201314414954A US2015152614A1 US 20150152614 A1 US20150152614 A1 US 20150152614A1 US 201314414954 A US201314414954 A US 201314414954A US 2015152614 A1 US2015152614 A1 US 2015152614A1
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Prior art keywords
dissipater
shells
breakwater
concrete
shell
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US14/414,954
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English (en)
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Michael Burt
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Neptunetech Ltd
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Technion Research and Development Foundation Ltd
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Priority to US14/414,954 priority Critical patent/US20150152614A1/en
Publication of US20150152614A1 publication Critical patent/US20150152614A1/en
Assigned to NEPTUNETECH LTD. reassignment NEPTUNETECH LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD.
Abandoned legal-status Critical Current

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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
    • E02B3/062—Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • 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
    • E02B3/046—Artificial reefs
    • 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
    • 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

Definitions

  • the present invention relates to permeable, sponge-like structures.
  • a breakwater is designed to oppose-alternate (by absorption or reflection or both) the energy of pounding waves, thus generating a protected, calm water activity zone or (in some utilizations) a land front mass protected from the erosive power of the sea, all that with the lowest possible cost and lowest environmental damage.
  • Fill-material based breakwaters are typically constructed from:
  • Caisson vertical wall
  • the bathymetric conditions, the impacting wave energy and the availability of fill-materials are the deciding factors of the breakwaters' realization and their costs.
  • Fill-material breakwaters because of their geometric wide-base configuration, reach their techno economical limit with the water depth of about 20-25 meters, beyond which, with every additional meter of depth, the material quantities become a critical economic constraint.
  • An object is to provide improved wave-energy dissipating structures adapted for uses such as breakwaters, acoustic walls and heat exchangers.
  • a permeable sponge breakwater comprising a plurality of doubly-curved hyperbolic paraboloids or minimal infinite polyhedral inter connected surface shells, or any other forms resembling their forming a continuous surface-structure, enveloping contiguous tunnels there through.
  • Embodiments comprising a plurality of hyperbolic-paraboloid like shells are constructed from any kind of material, such as reinforced concrete, steel sheets, plastic raisins, composite materials, etc.
  • the shells may comprise concrete, shotcrete, ferrocement, fibre-reinforced concrete, etc.
  • the concrete may comprise at least one reinforcing material, such as shotcrete, wires (metal, plastics, composite . . . ), ferrocement, f.r.p. (fibre reinforced plastics), meshes, e.g., metal meshes (corrosion resistant) and so forth.
  • a reinforcing material such as shotcrete, wires (metal, plastics, composite . . . ), ferrocement, f.r.p. (fibre reinforced plastics), meshes, e.g., metal meshes (corrosion resistant) and so forth.
  • the overall shape is modular, comprised of geometrically repetitive units, thus enabling to facilitate efficient mass production.
  • the shells may be shaped in a manner which conforms to various space symmetry categories, such as manifested in cubic; diamond; cube centered; edge centered; octet lattice configurations and the like.
  • the tunnels may be arranged according to a dual-intertwined cubic network's pair.
  • the periodic shells surface structure units have genus values between 2 and 13.
  • the shells have a shape selected from the shapes shown in FIG. 1 a , FIG. 1 b and combinations thereof.
  • the thickness of the shells structure generally corresponds to the type of the material the shells are made of: in the case of reinforced concrete (of contemporary performance) 7 to 20 cm, while in the case of steel or other metal or composite material shells, few millimeters may suffice.
  • each box circumscribing a cubic unit, or a periodic shell unit is
  • a portion of the shells is sealed, and some allow filling of air for floatability.
  • Resistance against corrosion may be attained by employing a plurality of methods, such as surface glazing, spraying with plastic materials, employing cathodic protection of metallic reinforcement ingredients, etc.
  • a portion of the shells and the sea water enveloped by it may comprise ballast material, adding to the overall stability of the structure.
  • the sponge breakwater may further comprise anchoring devices of any kind.
  • a mould configured to allow producing thereof concrete polyhyparic shell.
  • the moulds may be made of steel or concrete or pretensioned fabric membranes for example.
  • a cubic tunnel system is oriented at about 45° to the direction of wave frontages.
  • the sponge breakwater may further comprise reinforcements and stiffening devices, such as: beams, plates, rings, cables, opening cage stiffeners and combinations thereof.
  • the sponge breakwater may further comprise within the tunnel front openings wave turbines for harnessing the wave energy for exploitation.
  • a method of manufacturing a sponge breakwater mega-block at a concrete fabrication coastal plant in the sea comprising:
  • a protected calm water zone as part of the manufacturing plant, with ‘shipyard’ facilities; with moulds, each configured to allow producing (by casting) thereof: a concrete polyhyparic (or minimal) surface shells and curing them; assembling the curved shell ‘brick modules’ or a supporting-removable platform and finishing the assembly of the mega-blocks after their being solved for floatation, and then towing the floating mega-blocks together into a continuous breakwater mass; and essentially immobilizing founding-anchoring it.
  • the breakwaters may be positioned and solved (depends on the bathymetric conditions and water depth) as either:
  • the manufacturing shipyard plant's protected water zone may comprise a sand (rock) bar, or a caisson wall or a sponge breakwater or combinations thereof.
  • the assembly and joining of the sponge breakwater mega-blocks in the manufacturing plant may depend on the shell material technology.
  • the joining of the polyhyparic concrete ‘brick’ shell's may be achieved by plurality of detailed solutions as are familiar in concrete pre-fabrication technology or by casting or riveting or bracing or post tensioning, or gluing or soldering or welding techniques as required by the fabricated shell materials.
  • the joining of the sponge mega-blocks into solid continuance can be based on any of the above specified solutions, or with special bracing or post-tensioning devices or with prefabricated inter connecting sleeves from a plurality of materials designed to join the circular edge features of every adjacent mega-blocks together.
  • the joining of the sponge mega-blocks may be performed considering preserving certain residual flexibility between the mega-blocks, to be accommodated by a plurality of detailed solutions. Such flexibility may be desired in order to reduce internal stresses or when considering in advance the relocation of the breakwater segments in the foreseeable future.
  • a structure comprising polyhyparic shells, wherein the structure is selected from a group consisting of: sound-absorbers and acoustic barriers suitable for indoor and outdoor use is provided.
  • heat absorbers comprising dual-intertwined polyhyparic shells. Different agents, in the form of liquid or gas, may transfer heat to each other, or absorb heat from each other, without mixing.
  • FIG. 1 a illustrates a shell-surface that when joined with other such shells make together a continuous polyhyparic surface that subdivides space between two (identical) dual intertwined cubic networks (cubic symmetry regime).
  • FIG. 1 b illustrates the shells that make together a continuous polyhyparic surface, that subdivides space between two identical (dual) ‘diamond’ networks.
  • FIG. 2 shows a structure embodiment of shells of a repetitive, diamond network's symmetry nature.
  • FIG. 3 a shows an embodiment for a cube-centred and face centred network.
  • FIG. 3 b shows another embodiment for an edge-centred and face-centred network.
  • FIG. 4 shows a symmetry element embodiment for cubic networks.
  • FIG. 5 shows a cubic lattice of tunnels embodiment.
  • FIG. 6 a shows an orthogonal building mega-block for a breakwater embodiment, based on the cubic networks.
  • FIG. 6 b depicts a split breakwater embodiment, with the front built and engineered for receiving the initial impact of the waves mass and a rear side, at a distance of several tens of meters towards the shore.
  • FIG. 7 shows a modular unit for cubic network shells like the symmetry element in FIG. 4 , illustrating the periodic polyhyparic geometry of the shell structure.
  • FIG. 8 demonstrates transporting floating mega-blocks by towing them with the aid of towboats.
  • Some embodiments deal with breakwater structures designed to oppose wave energy and to generate a protected-calm water zone for various activities.
  • the prevailing-conventional breakwater solutions are based on mobilization and employment of large quantities of material-mass dredged-excavated-quarried from nature or their synthetic equivalents, to generate the required resistance, mostly by reflection, to the actions of the pounding waves.
  • the permeable sponge breakwater represents an alternative approach.
  • the basic departure from the conventional approach is in the fact that the sponge breakwater owes its energy attenuation performance to its spatial characteristics, meaning to the manner its structural material is distributed in space, rather than to the employment of mass-based fill-material solution strategies.
  • the geometry of the permeable sponge breakwater is generally representing a continuous periodic sponge surface which subdivides space between two dual (complementary) space networks (or lattices).
  • Such periodic surfaces may be solved as mathematically minimal surfaces, and in a limited number of cases (because of the prevailing symmetry constraints) as continuous, smooth polyhyparic surfaces, meaning tiled-mapped with one and the same hyperbolic-paraboloidal surface units. While the structural performance of the minimal and the polyhyparic surfaces is practically the same, the polyhyparic geometry is simpler to realize when it comes to mould fabrication.
  • the energy attenuation is achieved mainly through absorption rather than reflection because of the generated turbulence/friction by the waves bursting into the interior of the sponge breakwater tunnel system. Laboratory tests have demonstrated that about 80% of the wave energy is absorbed, about 10% reflected back and about 10% penetrates.
  • the sponge breakwater may be realized as a solid, thin shell structure in a variety of material solutions, ranging from steel or plastic shells or reinforced concrete shells of various thicknesses, according to their spatial disposition within the breakwaters' cross-section; the closer to the breakwaters' front, the thicker-stronger they are.
  • the overall amount of concrete in the shell material mass amounts to just about 10% of the concrete used in conventional fill-material based solutions, and only about 3% of the total volume of solid materials (including rocks, earth etc.).
  • the permeable sponge breakwater due to its high geometric periodicity, may be highly industrialized, wherein one type of (shell) suffices for its entire composition.
  • the permeable sponge breakwater may be structured to allow staged completion, starting with the fabrication (by casting) of the unit shells followed by their assembly into solid mega-blocks, and most preferably the mega-blocks are configured for floatability and transportability (by sea) to the destination site, for joining-bracing them together and for ground attachment or pile supporting or anchoring-mooring (depending on the water depth) to function as a completed breakwater.
  • Permeable sponge breakwaters thus provided, that are not based on fill-materials mined from nature, are environment-friendly.
  • the permeable sponge breakwaters are made of repeated modular (e.g. reinforced concrete) shells based on continuous hyperbolic surface geometry.
  • the shell modules may be assembled-joined into monolithic array mega-blocks, which together with the seawater filling them (and the foundation-anchorage provided) may pose a frontal resistance of more than 3000 tons per meter along the breakwater's front length.
  • a poly-hyperbolic-parabolic (polyhyparic) shell comprising reinforced concrete or any other suitable material, is provided.
  • a rigid shell structure comprising a plurality of sponge like permeable shell structure elements is provided.
  • a mold configured to allow casting-producing thereof a concrete polyhyparic shell is provided.
  • Both surfaces are doubly-curved (saddle-shaped) at all of their points, slightly different from the minimal surface (as mathematically determined) and therefore with similar structural performance.
  • the shells are arranged periodically-symmetrically, in repeat units, such as a structure 1000 of shells 1200 shown in FIG. 2 (one shell 1200 is isolated).
  • Each array of multiple units provides a complimentary bi-tunnel system 1220 that forms together with adjacent shells a ‘diamond’ (in the embodiment) or ‘cubic’ network of tunnels.
  • the structure differs in a basic feature represented by the tunnel's networks: the cubic network is based on straight and continuous tunnel axes, while the diamond network is characterized by tunnels arranged in a zigzag array.
  • Both surfaces can be divided into modular units in a number of manners. See for example FIGS. 3 a and 3 b , showing two different non-hyperbolic elements units 144 , 146 (that divide space into two non-identical networks and a hyperbolic partition does not contain any twofold symmetry axes, thus polyhyparic surfaces are not possible), and the orthogonal arrangement in FIG. 4 shows an element 140 for cubic networks, which is a hyperbolic surface subdividing space between two dual cubic networks.
  • the orthogonality is convenient (and significant) in relation with the organizational needs of the production site that will contain tens to hundreds of moulds, complex storage for the shells and transportation arrays with many crossing traffic and transportation tracks.
  • the hyperbolic shape is important for simple design of the molds.
  • the hyperbolic cubic surface was selected to make a cubic lattice of tunnels, for example a structure 2000 in FIG. 5 , and that was mainly considering comfortable production of models and moulds; the curvature values in the surface's critical areas; the capability of the modular units to be combined into large orthogonal building blocks; and the nature of their curved edges that can be easily reinforced and provide more rigidity against the storming waves.
  • the ‘cubic surface’ permits setting up the modular units according to two different orientations:
  • the orientation, when rotated by 45 degrees may be preferred since the length of the tunnels where waves will break and swirl is longer (by square root) than in the orthogonal orientation.
  • polyhedral concrete units may be constructed from hexagonal plates for example, thus considerably simplifying the casting and stacking of finished modules.
  • the modular units also stack more tightly, which certainly has (positive) implications on the size of the production site and its space utilization.
  • the breakwaters' shape in a cross-section parallel to the waves' advance direction raises various possibilities. Referring to FIGS. 6 a and 6 b , two principal alternatives were examined.
  • the FIG. 6 a also shows the traditional breakwater 30 , that is less effective in attenuating wave energy and thus has to be higher to cope with waves up to certain heights.
  • the wave crests build up when they encounter the prior-art barrier and thus the breakwater 30 is required to attain a certain regulatory height about the water surface to exhaust the wave's kinetic energy.
  • the added height considerably increases the mass of the prior art breakwater.
  • the novel building block 3000 does not require such extra height and thus even more material is saved.
  • the breakwater's rear side is free of the strong waves' impacts, and therefore it will be possible to utilize it as a construction carrying platform (if programmatically desired) for various services ( 3036 ).
  • the size of the modular unit will tend to attain an optimal shell in the strength required for resisting the wave and production effectiveness aspects (moulds and production rate considerations).
  • the following parameters seem to be of importance:
  • the shell's thickness may further be reduced if the concrete compositions include main reinforcement meshes/fibres (preferably non-corrodable) instead of the conventional steel-based reinforcement meshes.
  • the elementary repeat unit of the hyperbolic shell surface or its various approximations and derivatives (“infinite polyhedral” plate structures, cylinder segments, composition structures, etc.) may have a perimeter composed of curved or plain segments and the overall shell surface may assume different mathematical definitions among which is also the distinctive polyhyparic surface, which is relatively easy to fabricate because of its ruled surface characteristics.
  • the geometry of the mould's surface can be modified to meet many constraints, in the aspect of its size, (itself a function of the lifting equipment and their transportation mode), the materials the mould is made of, the materials of the manufactured products and their application methods, the shells' dismantling and their stacking or curing (from concrete derivatives) for storage purposes.
  • the assembling-joining of the manufactured shell units to one another can be based on various complying methods for wet joints, such as casting, gluing, soldering, and for dry joints, by means of braces, clamps, thread riveting and all sorts of socket-plug solutions, including pre-tensioning by cables along the straight axes of the symmetry lines of the surface manifold or its tunnel systems, all dependent on the shell's choice of materials and fabrication technique.
  • the hyperbolic surface can be solved as a membrane subjected to tension only, it is possible to engineer moulds from pre-tensioned spatial fabric membranes.
  • Their advantage resides in the simplicity of their manufacture, their light weight and their foldability for transportation and storage purposes. They can be “peeled” off the cast shell in a fast and simple operation, without having to jolt the shell. Early exposure of the shell may improve and accelerate the curing process of the shell's concrete.
  • the shells can be engineered in different casting or spraying methods and in various thicknesses. This may be accomplished with a variety of materials, both in the aspect of the matrix as well as in that of the reinforcement matrices, such as shotcrete, concrete reinforced with metal or plastic fiber (fiber reinforced concrete), and industrial meshes to fabricate ferrocement or ferrocement-like shells.
  • Concrete shells may be covered with an epoxy or similar material that coats the surfaces and may enter cracks in the concrete. The epoxy may increase the lifespan of the breakwater.
  • the principal execution phases of the sponge breakwater are the following:
  • every execution phase may be composed of few intermittent stages. For example,
  • the nature of the fabrication plant and the required facilities may depend on the type of brick shells, their materials, overall weights and sizes, curing-hardening requirements and so forth.
  • the curing and the storage of the finished bricks may impose space requirements and special facilities.
  • the permeable sponge breakwaters' surfaces may be defined as periodic hyperbolic surfaces.
  • Some embodiments are derivatives of “infinite polyhedra”:
  • the surfaces may be extended continuously in an ordered way while subdividing the enveloped space into two (or more) continuous sub-spaces, in the form of conjoined tunnel networks.
  • These networks in the case of division into two subspaces, are dual-complementary and can be mutually-reciprocally deduced from each other.
  • the hyperbolic surfaces may be characterized more by their genus, valence and curvature characteristics than their symmetry definitions, although their symmetry regime is also of importance, defining the geometric periodicity—repetitiveness and the modular nature of the surface configuration.
  • Minimal surfaces i.e., smooth composition sequences of hyparic segments
  • polyhedral surfaces i.e., periodic polyhedra with plain faces (two only meeting at a bounding edge); or even discontinuous surfaces composed of combinations of cylindrical, convex and/or hyperbolic segments
  • the subject of polyhedral envelopes is confined to the domain determined by: ⁇ av, average sum of the angles at the envelope's vertex, 2 ⁇ av ⁇ 4 ⁇ and val.av—the average edge valency in a vertex, 3 ⁇ val.av ⁇ 12.
  • One or more of the tunnel network systems may be transformed into a cellular configuration, thus dramatically strengthening the whole cell agglomeration and consequently leading to a single tunnel labyrinth and an increase in the amount of reflected energy.
  • each of the subspace tunnels can be partially partitioned (with the integration of polygonal plain or curved surface segments) until an array of cellular compartments is obtained, to deal with various designs considered such as providing enclosed spaces for flotation and ballast or storage of various articles within the interior of the sponge breakwater.
  • the basic modular unit size (equivalent to the module's edge length) is practically confined to:
  • the substrate may be prepared for the structure 5000 ′ by levelling.
  • the leveling may include bringing sand or other suitable fill to the area underneath the structure 5000 ′.
  • Sand or other loose and dense material may further be used to immobilize the structure 5000 ′ by filling in the lower channels.

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  • Engineering & Computer Science (AREA)
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  • Ocean & Marine Engineering (AREA)
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  • Manufacturing & Machinery (AREA)
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US10107555B1 (en) * 2017-04-21 2018-10-23 Unison Industries, Llc Heat exchanger assembly
US20200149238A1 (en) * 2016-12-06 2020-05-14 Arc Marine Ltd Apparatus for an artificial reef and method
US10955200B2 (en) 2018-07-13 2021-03-23 General Electric Company Heat exchangers having a three-dimensional lattice structure with baffle cells and methods of forming baffles in a three-dimensional lattice structure of a heat exchanger
US20210112786A1 (en) * 2018-02-12 2021-04-22 David Fries Biomimetic Sentinel Reef Structures for Optical Sensing and Communications
US11213923B2 (en) 2018-07-13 2022-01-04 General Electric Company Heat exchangers having a three-dimensional lattice structure with a rounded unit cell entrance and methods of forming rounded unit cell entrances in a three-dimensional lattice structure of a heat exchanger
CN114991091A (zh) * 2022-05-10 2022-09-02 中国葛洲坝集团第二工程有限公司 双曲扭面过流面底板抗冲耐磨混凝土浇筑方法
US20220396925A1 (en) * 2019-11-04 2022-12-15 Marine Innovations And Engineering B.V. Underwater modular structure, module of or for said underwater modular structure and method of constructing an underwater modular structure
US11603637B1 (en) * 2021-07-21 2023-03-14 David Billings Wave attenuator system

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CN105113508B (zh) * 2015-09-11 2017-01-11 中交公路长大桥建设国家工程研究中心有限公司 大型桥梁深水预制基础定位沉放控制系统
US20190127976A1 (en) * 2017-10-26 2019-05-02 William Donnelly Interlocking Blocks
CN108385609B (zh) * 2018-02-12 2020-10-27 交通运输部天津水运工程科学研究所 一种平面组合型消浪人工护面块体及消浪堤岸
KR102159958B1 (ko) * 2018-12-12 2020-09-25 이현만 테트라포드 제조방법 및 이 제조방법에 의해 제조되는 테트라포드
CN110004874B (zh) * 2019-04-03 2020-01-17 河海大学 一种蜗壳式生态消浪结构
CN110172952B (zh) * 2019-06-10 2021-05-28 中水珠江规划勘测设计有限公司 一种可消能的生态护岸结构
CN111172940B (zh) * 2019-12-30 2021-05-28 浙江大学 一种可利用波浪能的海岸防护潜堤
JP2023003757A (ja) * 2021-06-24 2023-01-17 株式会社アシックス 緩衝材、靴底および靴
US11994036B2 (en) * 2022-01-26 2024-05-28 Rohr, Inc. Unit cell resonator networks for acoustic and vibration damping
US12071217B2 (en) * 2022-03-10 2024-08-27 Rohr, Inc. Additive manufacturing of unit cell resonator networks for acoustic damping
CN115323907A (zh) * 2022-09-20 2022-11-11 西南交通大学 一种桥墩消浪装置

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WO2014013484A1 (en) 2014-01-23
JP2015524521A (ja) 2015-08-24
US20170260707A1 (en) 2017-09-14
US9915047B2 (en) 2018-03-13
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EP3305988B1 (en) 2021-03-17
KR20150058161A (ko) 2015-05-28

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