US3864049A - Construction elements of underwater trusses - Google Patents
Construction elements of underwater trusses Download PDFInfo
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- US3864049A US3864049A US368537A US36853773A US3864049A US 3864049 A US3864049 A US 3864049A US 368537 A US368537 A US 368537A US 36853773 A US36853773 A US 36853773A US 3864049 A US3864049 A US 3864049A
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- Prior art keywords
- joint
- construction elements
- members
- stoppers
- web
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- Expired - Lifetime
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 3
- 239000006223 plastic coating Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 239000013535 sea water Substances 0.000 abstract description 11
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000009432 framing Methods 0.000 description 3
- 241001474374 Blennius Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
- E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
-
- 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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1924—Struts specially adapted therefor
- E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1957—Details of connections between nodes and struts
- E04B2001/1966—Formlocking connections other than screw connections
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1981—Three-dimensional framework structures characterised by the grid type of the outer planes of the framework
- E04B2001/1984—Three-dimensional framework structures characterised by the grid type of the outer planes of the framework rectangular, e.g. square, grid
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1993—Details of framework supporting structure, e.g. posts or 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/34—Branched
- Y10T403/341—Three or more radiating members
- Y10T403/342—Polyhedral
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/44—Three or more members connected at single locus
Definitions
- This invention is particularly applicable to the construction of large-scale trusses on the bottom of the sea for use as fishing grounds or other types of structure used in the sea.
- One of the particularly advantageous application of the truss in accordance with this invention is an auxiliary structure around an observation instrument or other kind of instrument provided in the sea for protecting the same from the influence of wave motion.
- the structure must have small resistance to the flow of sea water so that its position in space will'remain fixed against the sea water flow. Further, the construction must have good versatility in shape. particularly in the case where the construction is used as an auxiliary structure for protecting an instrument or the like in the sea.
- the principal object of this invention is to provide construction elements which can be assembled into a truss structure which constantly maintains its position in space.
- Another object of this invention is to provide construction elements for framing trusses which are rigid enough to maintain their position and at the same time elastic enough to maintain their form against the influence of wave motion.
- Still another object of this invention is to provide construction elements for framing trusses which have small surface area so as to have as small fluid resistance as possible.
- a further object of this invention is to provide construction elements for constructing trusses which can be assembled in a variety of shapes as desired so that the constructed truss can be made to conform to the contour of the object provided in the sea or can be formed in any desired shape.
- a still further object of this invention is to provide construction elements for framing underwater trusses which are light in weight and accordingly are able to form large-scale trusses in the sea.
- a still another object of this invention is to provide construction elements for constructing underwater trusses which have substantially the same specific gravity as that of sea water so that they can easily be assembled in the sea and a great weight of the trusses may not be exerted on the elements in the sea.
- the construction elements in accordance with this invention basically comprise spherical elastic joint members having a plurality of engaging holes over the whole surface thereof, and web members having elastic portions at both ends thereof to be engaged with the holes of said joint members.
- the joint members and the web members are made so light in weight that the specific gravity thereof is substantially the same as that of sea water.
- the web members are preferably made hollow in order to save material and make them light in weight.
- FIG. I is a partial longitudinal sectional view showing basic elements of the construction elements in accordance with a simple embodiment of the present invention.
- FIG. 2 is a perspective view of a basic truss unit constituted by the joint members and the web members of the construction elements of the present invention
- FIG. 3 is a longitudinal sectional view showing the internal structure of the joint member and the web member constituting the construction elements in accordance with another embodiment of the present invention
- FIG. 4 is a partial longitudinal sectional view of the head of the web member to be joined with the joint member
- FIG. 5 is a partial longitudinal sectional view of the head of the web member joined with the joint member
- FIG. 6 is a partly broken perspective view of a locking means for keeping the head of the web member locked in the joint member
- FIG. 7 is a plan view of the top of a cup for holding the neck portion of the head of the web.
- FIG. 8 is a perspective view of an example of a fishing ground constructed by use of trusses in accordance with this invention.
- the construction elements comprise a web member 1 and joint members 2 joined at the opposite ends of the web member 1.
- the web member 1 comprises a hollow steel pipe 10, a pair of elastic end members 11 fixed at the opposite ends 10 of the steel pipe 10, a tension member such as a wire rope l2 tensioned between the elastic end members 11 at the center of the steel pipe 10, and a pair of head members 13 fixed to the opposite ends of the tension member 12.
- the head member 13 has a hole 13b at an end of a spherical body portion 13a so that the end 12a of the tension member 12 can be inserted therein and tightly fixed thereto.
- the spherical body portion 13a may be either rigid or elastic. In case that it is rigid, the joint member 2 must be elastic so that the head member 13 of the web member 1 may be snapped into the hole 2a of the joint member 2 by elastic deformation of the joint member 2.
- the web member I should float or almost float in the water or sea water so that it may be easily handled in the water with small force.
- the tension member 12 is not a wire rope but a rigid member, foamed urethane 14 may be used to fill in the space between the hollow steel pipe and the tension member 12 so as to make the specific gravity of the web member 1 as a whole substantially equal to that of the sea water,
- the tension member 12 tensioned in the web member 1 may be a fabric rope made of polypropylene.
- the spherical joint member 2 is provided with a plurality of joint holes 2a having a narrowered opening 2b for holding the spherical head 13 of the web member 1.
- the hole 2a holds the head 13 of the web member 1 with a holding force strong enough to keep the web member joined with the joint member when the .joint members 2 joined at the opposite ends of the web memher 1 are pulled apart to strongly tension the rope 12.
- the spherical joint member 2 is preferred to be elastic, but may be rigid when the head 13 of the web member 1 is elastic enough to easily snap into the hole. In order to prevent the head from easily being removed from the hole, the shape of the head 13 is preferred to be conical or triangular rather than spherical.
- the foundamental unit of the trusses constituted by the above elements is a tetragonal unit as shown in FIG. I
- FIGS. 3 to 8 Another preferred embodiment of this invention is illustrated in FIGS. 3 to 8.
- the head of the web members In order to construct a largescale truss which is used for resisting a large force of wave impact or flow of sea water, the head of the web members is required to be tightly held by the hole of the joint member. Accordingly, a lock means is necessitated at the head of the web member.
- a web member 3 in accordance with the second embodiments of this invention comprises a hollow tubular portion 3a, a pair ofa head portions 3b provided at the opposite ends thereof, and a wire rope 3c extendingthrough the tubular portion 3a and tensioned between the head portions 3a.
- the hollow tubular portion 3a comprises, in this embodiment, a rigid steel pipe 31 and a plastic protective coating 32.
- the pipe 31 may be madeof concrete or plastic so long as it has strong rigidity and sufficient compressive strength against the impact of waves in the sea.
- the reference numeral 33 shows a head holder made of light aluminium alloy fixed to the end of the steel pipe 31 and formed to have a deep annular recess 33a to receive a cylindrical elastic head member 34.
- the elastic head member 34 has a cylindrical form and is tightly engaged with the recess 33a of the head holder 33 concentrically therewith.
- the end of the head member 34 is rounded and received in a hard plastic cup member 35 to be mated with ajoint hole 42 of the joint member 4.
- the plastic cup member 35 comprises a pair of cup halves (see FIG. 7) and has stopper spring guides 35 35 35 35 on the top thereof for moving outward the stopper springs 36,, 36 36 36 (36 36 are not shown in FIG. 6) of stoppers 36a, 36b, 36c, 36d.
- the cup member 35 has key holes 350 and 35d for rotation 0f the cup member around its axis to move the stopper springs 36,, 36 outward to lock the head in the joint hole 42.
- the reference numeral 38 indicate a holding ring to tightly hold the elastic head member 34 for preventing excessive distortion thereof.
- a socket 37 is secured to the end of the wire rope 3c and a stopper means 36 is provided beneath the socket 37 and said stopper springs 36,, 36 are engaged with said spring guides 35,, 35 35 35,, formed on the top of the cup member 35.
- the stoppers 36a, 36b, 36c, 36d are provided with a holding wire 36 36 36 extending upwards and said stopper spring 36 36 36 as shown in FIG. 6.
- the holding wires 36 36 are held in the socket 37 as shown in FIG. 4 and secured therein together with the wire rope 3c.
- the lower end of the stopper springs 36 are engaged withsaid springguides 35, so that the stopper springs 36, may be moved outward when the cup member 35 is rotated clockwise (in FIG. 7) to move the stoppers 36 outward.
- the stoppers 36 when moved outward after the head 3b is inserted into the joint hole 42, ride on the reception face 41a of the joint body 41 of the joint member 4 as shown in FIG. 5 so that the head portion 36 of the web member cannot be pulled out.
- the wire rope 30 serves to resist against a tension exerted on the web member 3. Another important role of the wire rope 3c is to hold a pipe or an electric lead wire therein for transporting liquid, air or other material desired to be sent through the web member or transmitting electricity therethrough. Thus, the wire rope 30 serves as a nerve system of the truss structure.
- the joint member 4 is a hollow spherical body made of steel or rigid hard plastic.
- the number of the joint holes 42 is properly selected, but the maximum in practical use in 18.
- the web members 3 and the joint members 4 are joined together to form a truss structure.
- a truss structure is shown in FIG. 8.
- the truss structure is a combination of the regular tetrahedral units shown in FIG. 2, in which a pair of two-dimensional truss structures 51 and 52 extending in parallel with each other are combined by means of binding webs 53a, 53b, which in turn form tetrahedral units.
- webs 53a, 53b, and 53c extending from a vertex 51a of a triangule 51A in the upper twodimensional truss structure 51 diagonally downward to three vertexes 52a, 52b, 52c of a triangle of the lower truss structure 52 form a regular tetrahedron.
- Three vertexes 51a, 51b, 51c of the triangle 51A and said vertex 52b form another tetrahedron.
- leg portion 54 made of the truss structure extending downward.
- the lower end of the leg portion 54 is secured to concrete blocks or the like 55 which are anchored to the bottom of the sea by means of anchors 56.
- FIG. 8 shows a corner of a table-shaped under-water truss structure constructed by use of the truss elements in accordance with the present invention.
- the truss structure constructed as described above is useful as an under-water structure serving as a fishing ground, an auxiliary structure surrounding an underwater construction for protecting the same from the influence of wave motion, a bed for culturing seaweeds,
- Construction elements of underwater trusses comprising a web member having elastic head members secured to each of the opposite ends thereof, spherical hollow opposing joint members having a plurality of holes formed therein, a cup-shaped member covering a portion of each elastic head member and received in one of said holes in each joint member, a tension member extending through said web member and having ends extending through said holes into the hollow portions of said joint members, and stopper means for locking each end of the tension member to said hollow portion of each joint member to interconnect said web member and said joint member in fixed position.
- said web member includes a hollow pipe member made of steel, a rigid cylindrical end member secured to each of the ends of said hollow pipe member, and a plastic coating covering the outer surface of said pipe member and said end member, said elastic head member being retained on said end member secured to said pipe member.
- said tension member is a wire rope, a socket being secured to each of the ends of the wire rope for holding it, and said stopper means comprises a plurality of split stoppers disposed adjacent to the inside end of said socket, said stoppers being movable to a conically outwardly enlarged position where they are engaged with the inner end face of said hole to lock said socket onto the end of the wire rope and within said hollow portion of the joint member, and means operatable in response to rotation of said cup member for moving said stoppers to said outwardly enlarged position.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Artificial Fish Reefs (AREA)
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Abstract
Hollow web members having a tension member extending therethrough are engaged at the ends thereof with joint members. The joint members are provided with holes for holding the end of said web members. The specific gravity of the web members and the joint members are substantially equal to that of sea water so that they may be easily assembled in sea water. The truss structure constructed by use of the elements serves as a fishing ground, an auxiliary construction for protecting an underwater construction from impact of waves and so forth.
Description
United States Patent [1 1 Ono [451 Feb. 4, 1975 1 CONSTRUCTION ELEMENTS OF UNDERWATER TRUSSES [76] Inventor: Taisaburo Ono, No. 2-39, Z-chome,
Shinjuku, Zushi, Japan 22 Filed: June 11, 1973 [21] Appl. No.: 368,537
[30] Foreign Application Priority Data Jan. 11, 1973 Japan 48-5524 [52] US. Cl 403/171, 52/227, 52/648, 52/726, 61/3, 403/217 [51] Int. Cl E04g 7/20 [58] Field of Search 61/3; 403/171, 176, 172, 403/170, 217, 218; 52/608, 81, 726,227;
[56] References Cited UNITED STATES PATENTS 3,195,266 7/1965 Onanian 46/26 3,286,391 11/1966 Mengeringhausen 46/29 3,294,053 12/1966 Emery, Jr. 403/170 X 3,685,297 8/1972 Juodis 61/1 F 3,789,562 2/1974 Chicchis et a1. 52/81 X Primary Examiner-Philip C. Kannan [57] ABSTRACT Hollow web members having a tension member extending therethrough are engaged at the ends thereof with joint members. The joint members are provided with holes for holding the end of said web members. The specific gravity of the web members and the joint members are substantially equal to that of sea water so that they may be easily assembled in sea water. The truss structure constructed by use of the elements serves as a fishing ground, an auxiliary construction for protecting an underwater construction from impact of waves and so forth.
' 6 Claims, 8 Drawing Figures CONSTRUCTION ELEMENTS OF UNDERWATER TRUSSES BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to construction elements of trusses, and more particularly to construction elements of three-dimensional underwater trusses adapted to be constructed under the water.
This invention is particularly applicable to the construction of large-scale trusses on the bottom of the sea for use as fishing grounds or other types of structure used in the sea. One of the particularly advantageous application of the truss in accordance with this invention is an auxiliary structure around an observation instrument or other kind of instrument provided in the sea for protecting the same from the influence of wave motion.
2. Description of the Prior Art Artificial fishing grounds which have hitherto been constructed in accordance with prior art have used heavy materials such as concrete blocks or sunken ships. Therefore, the construction of the conventional fishing ground has required great labor and much time for transportation of the materials to the site of construction and for making the fishing ground into the desired shape. There has been a strong desire for elimination of such difficulties in the construction of the conventional fishing ground or other structures in the sea.
Further, in the prior art, it has been impossible to construct a large-scale wave breaker in the sea at depths greater than about 100 m.
In construction of a structure such as a truss in the sea, the most important and difficult problem is how to maintain every point of the structure at a fixed position. Another problem is how to construct trusses in the sea at depths of 20 m or more.
If the above mentioned problems inherent in the prior arts are to be overcome. the structure must have small resistance to the flow of sea water so that its position in space will'remain fixed against the sea water flow. Further, the construction must have good versatility in shape. particularly in the case where the construction is used as an auxiliary structure for protecting an instrument or the like in the sea.
SUMMARY OF THE INVENTION The above-mentioned problems are solved and-the requirements mentioned above are met by this invention, in which underwater trusses are constructed by assembling elastic elements.
The principal object of this invention is to provide construction elements which can be assembled into a truss structure which constantly maintains its position in space.
Another object of this invention is to provide construction elements for framing trusses which are rigid enough to maintain their position and at the same time elastic enough to maintain their form against the influence of wave motion.
Still another object of this invention is to provide construction elements for framing trusses which have small surface area so as to have as small fluid resistance as possible.
A further object of this invention is to provide construction elements for constructing trusses which can be assembled in a variety of shapes as desired so that the constructed truss can be made to conform to the contour of the object provided in the sea or can be formed in any desired shape.
A still further object of this invention is to provide construction elements for framing underwater trusses which are light in weight and accordingly are able to form large-scale trusses in the sea.
A still another object of this invention is to provide construction elements for constructing underwater trusses which have substantially the same specific gravity as that of sea water so that they can easily be assembled in the sea and a great weight of the trusses may not be exerted on the elements in the sea.
The construction elements in accordance with this invention basically comprise spherical elastic joint members having a plurality of engaging holes over the whole surface thereof, and web members having elastic portions at both ends thereof to be engaged with the holes of said joint members. The joint members and the web members are made so light in weight that the specific gravity thereof is substantially the same as that of sea water. The web members are preferably made hollow in order to save material and make them light in weight.
BRIEF DESCRIPTION OF THE DRAWING FIG. I is a partial longitudinal sectional view showing basic elements of the construction elements in accordance with a simple embodiment of the present invention;
FIG. 2 is a perspective view of a basic truss unit constituted by the joint members and the web members of the construction elements of the present invention;
FIG. 3 is a longitudinal sectional view showing the internal structure of the joint member and the web member constituting the construction elements in accordance with another embodiment of the present invention;
FIG. 4 is a partial longitudinal sectional view of the head of the web member to be joined with the joint member;
FIG. 5 is a partial longitudinal sectional view of the head of the web member joined with the joint member;
FIG. 6 is a partly broken perspective view of a locking means for keeping the head of the web member locked in the joint member;
FIG. 7 is a plan view of the top of a cup for holding the neck portion of the head of the web; and
FIG. 8 is a perspective view of an example of a fishing ground constructed by use of trusses in accordance with this invention.
PREFERRED EMBODIMENTS OF THE INVENTION Referring to FIG. 1 which shows a foundamental embodiment of this invention, the construction elements comprise a web member 1 and joint members 2 joined at the opposite ends of the web member 1. The web member 1 comprises a hollow steel pipe 10, a pair of elastic end members 11 fixed at the opposite ends 10 of the steel pipe 10, a tension member such as a wire rope l2 tensioned between the elastic end members 11 at the center of the steel pipe 10, and a pair of head members 13 fixed to the opposite ends of the tension member 12. The head member 13 has a hole 13b at an end of a spherical body portion 13a so that the end 12a of the tension member 12 can be inserted therein and tightly fixed thereto. The spherical body portion 13a may be either rigid or elastic. In case that it is rigid, the joint member 2 must be elastic so that the head member 13 of the web member 1 may be snapped into the hole 2a of the joint member 2 by elastic deformation of the joint member 2.
The web member I should float or almost float in the water or sea water so that it may be easily handled in the water with small force. If the tension member 12 is not a wire rope but a rigid member, foamed urethane 14 may be used to fill in the space between the hollow steel pipe and the tension member 12 so as to make the specific gravity of the web member 1 as a whole substantially equal to that of the sea water, The tension member 12 tensioned in the web member 1 may be a fabric rope made of polypropylene.
The spherical joint member 2 is provided with a plurality of joint holes 2a having a narrowered opening 2b for holding the spherical head 13 of the web member 1. The hole 2a holds the head 13 of the web member 1 with a holding force strong enough to keep the web member joined with the joint member when the .joint members 2 joined at the opposite ends of the web memher 1 are pulled apart to strongly tension the rope 12. The spherical joint member 2 is preferred to be elastic, but may be rigid when the head 13 of the web member 1 is elastic enough to easily snap into the hole. In order to prevent the head from easily being removed from the hole, the shape of the head 13 is preferred to be conical or triangular rather than spherical.
The foundamental unit of the trusses constituted by the above elements is a tetragonal unit as shown in FIG. I
2. Four web members 1 and four joint members 2 are used to frame this basic unit truss structure.
Another preferred embodiment of this invention is illustrated in FIGS. 3 to 8. In order to construct a largescale truss which is used for resisting a large force of wave impact or flow of sea water,, the head of the web members is required to be tightly held by the hole of the joint member. Accordingly, a lock means is necessitated at the head of the web member.
Referring to FIG. 3, a web member 3 in accordance with the second embodiments of this invention comprises a hollow tubular portion 3a, a pair ofa head portions 3b provided at the opposite ends thereof, and a wire rope 3c extendingthrough the tubular portion 3a and tensioned between the head portions 3a. The hollow tubular portion 3a comprises, in this embodiment, a rigid steel pipe 31 and a plastic protective coating 32. The pipe 31 may be madeof concrete or plastic so long as it has strong rigidity and sufficient compressive strength against the impact of waves in the sea. The reference numeral 33 shows a head holder made of light aluminium alloy fixed to the end of the steel pipe 31 and formed to have a deep annular recess 33a to receive a cylindrical elastic head member 34. The elastic head member 34 has a cylindrical form and is tightly engaged with the recess 33a of the head holder 33 concentrically therewith. The end of the head member 34 is rounded and received in a hard plastic cup member 35 to be mated with ajoint hole 42 of the joint member 4. The plastic cup member 35 comprises a pair of cup halves (see FIG. 7) and has stopper spring guides 35 35 35 35 on the top thereof for moving outward the stopper springs 36,, 36 36 36 (36 36 are not shown in FIG. 6) of stoppers 36a, 36b, 36c, 36d. The cup member 35 has key holes 350 and 35d for rotation 0f the cup member around its axis to move the stopper springs 36,, 36 outward to lock the head in the joint hole 42.
The reference numeral 38 indicate a holding ring to tightly hold the elastic head member 34 for preventing excessive distortion thereof.
Referring to FIGS. 4 and 5 showing the detailed construction of the head portion, a socket 37 is secured to the end of the wire rope 3c and a stopper means 36 is provided beneath the socket 37 and said stopper springs 36,, 36 are engaged with said spring guides 35,, 35 35 35,, formed on the top of the cup member 35. The stoppers 36a, 36b, 36c, 36d are provided with a holding wire 36 36 36 extending upwards and said stopper spring 36 36 36 as shown in FIG. 6. The holding wires 36 36 are held in the socket 37 as shown in FIG. 4 and secured therein together with the wire rope 3c. The lower end of the stopper springs 36, are engaged withsaid springguides 35, so that the stopper springs 36, may be moved outward when the cup member 35 is rotated clockwise (in FIG. 7) to move the stoppers 36 outward. The stoppers 36, when moved outward after the head 3b is inserted into the joint hole 42, ride on the reception face 41a of the joint body 41 of the joint member 4 as shown in FIG. 5 so that the head portion 36 of the web member cannot be pulled out.
The wire rope 30 serves to resist against a tension exerted on the web member 3. Another important role of the wire rope 3c is to hold a pipe or an electric lead wire therein for transporting liquid, air or other material desired to be sent through the web member or transmitting electricity therethrough. Thus, the wire rope 30 serves as a nerve system of the truss structure.
The joint member 4 is a hollow spherical body made of steel or rigid hard plastic. The number of the joint holes 42 is properly selected, but the maximum in practical use in 18.
The web members 3 and the joint members 4 are joined together to form a truss structure. One example of a truss structure is shown in FIG. 8. The truss structure is a combination of the regular tetrahedral units shown in FIG. 2, in which a pair of two- dimensional truss structures 51 and 52 extending in parallel with each other are combined by means of binding webs 53a, 53b, which in turn form tetrahedral units. For example, webs 53a, 53b, and 53c extending from a vertex 51a of a triangule 51A in the upper twodimensional truss structure 51 diagonally downward to three vertexes 52a, 52b, 52c of a triangle of the lower truss structure 52 form a regular tetrahedron. Three vertexes 51a, 51b, 51c of the triangle 51A and said vertex 52b form another tetrahedron.
At the corner of the lower truss structure 52 is formed a leg portion 54 made of the truss structure extending downward. The lower end of the leg portion 54 is secured to concrete blocks or the like 55 which are anchored to the bottom of the sea by means of anchors 56.
FIG. 8 shows a corner of a table-shaped under-water truss structure constructed by use of the truss elements in accordance with the present invention.
The truss structure constructed as described above is useful as an under-water structure serving as a fishing ground, an auxiliary structure surrounding an underwater construction for protecting the same from the influence of wave motion, a bed for culturing seaweeds,
pearls and other sea products, and also useful as a structure floating on the sea like a floating island for use as a resting place for workers or as a place to work What is claimed is:
1. Construction elements of underwater trusses comprising a web member having elastic head members secured to each of the opposite ends thereof, spherical hollow opposing joint members having a plurality of holes formed therein, a cup-shaped member covering a portion of each elastic head member and received in one of said holes in each joint member, a tension member extending through said web member and having ends extending through said holes into the hollow portions of said joint members, and stopper means for locking each end of the tension member to said hollow portion of each joint member to interconnect said web member and said joint member in fixed position.
2. Construction elements as defined in claim 1, wherein said web member includes a hollow pipe member made of steel, a rigid cylindrical end member secured to each of the ends of said hollow pipe member, and a plastic coating covering the outer surface of said pipe member and said end member, said elastic head member being retained on said end member secured to said pipe member.
3. Construction elements as defined in claim 2, wherein said end member is made of a light aluminum alloy.
4. Construction elements as defined in claim 2, wherein said elastic head member is provided with a ring about its outer periphery for preventing excessive deformation thereof.
5. Construction elements as defined in claim 1, wherein said tension member is a wire rope, a socket being secured to each of the ends of the wire rope for holding it, and said stopper means comprises a plurality of split stoppers disposed adjacent to the inside end of said socket, said stoppers being movable to a conically outwardly enlarged position where they are engaged with the inner end face of said hole to lock said socket onto the end of the wire rope and within said hollow portion of the joint member, and means operatable in response to rotation of said cup member for moving said stoppers to said outwardly enlarged position.
6. Construction elements as defined in claim 5, wherein said means for moving said stoppers include guide members provided on said stoppers and fixably held at their one ends on said wire end by the socket,
member.
Claims (6)
1. Construction elements of underwater trusses comprising a web member having elastic head members secured to each of the opposite ends thereof, spherical hollow opposing joint members having a plurality of holes formed therein, a cup-shaped member covering a portion of each elastic head member and received in one of said holes in each joint member, a tension member extending through said web member and having ends extending through said holes into the hollow portions of said joint members, and stopper means for locking each end of the tension member to said hollow portion of each joint member to interconnect said web member and said joint member in fixed position.
2. Construction elements as defined in claim 1, wherein said web member includes a hollow pipe member made of steel, a rigid cylindrical end member secured to each of the ends of said hollow pipe member, and a plastic coating covering the outer surface of said pipe member and said end membeR, said elastic head member being retained on said end member secured to said pipe member.
3. Construction elements as defined in claim 2, wherein said end member is made of a light aluminum alloy.
4. Construction elements as defined in claim 2, wherein said elastic head member is provided with a ring about its outer periphery for preventing excessive deformation thereof.
5. Construction elements as defined in claim 1, wherein said tension member is a wire rope, a socket being secured to each of the ends of the wire rope for holding it, and said stopper means comprises a plurality of split stoppers disposed adjacent to the inside end of said socket, said stoppers being movable to a conically outwardly enlarged position where they are engaged with the inner end face of said hole to lock said socket onto the end of the wire rope and within said hollow portion of the joint member, and means operatable in response to rotation of said cup member for moving said stoppers to said outwardly enlarged position.
6. Construction elements as defined in claim 5, wherein said means for moving said stoppers include guide members provided on said stoppers and fixably held at their one ends on said wire end by the socket, and said cup member is provided with guide grooves for receiving and guiding outwardly the other ends of said guide members so as to move said stoppers to the outwardly enlarged position during rotation of said cup member.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48005524A JPS523487B2 (en) | 1973-01-11 | 1973-01-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3864049A true US3864049A (en) | 1975-02-04 |
Family
ID=11613565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US368537A Expired - Lifetime US3864049A (en) | 1973-01-11 | 1973-06-11 | Construction elements of underwater trusses |
Country Status (2)
Country | Link |
---|---|
US (1) | US3864049A (en) |
JP (1) | JPS523487B2 (en) |
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FR2609741A1 (en) * | 1987-01-20 | 1988-07-22 | Lahaye Claude | THREE DIMENSIONAL SPATIAL STRUCTURE |
US4763459A (en) * | 1987-04-01 | 1988-08-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Collet lock joint for space station truss |
US4866902A (en) * | 1986-04-11 | 1989-09-19 | Wayne State University | Joint for space frame |
EP0337961A1 (en) * | 1988-04-08 | 1989-10-18 | Fedon, Raffaele | Nodal element for lattice spatial structures with ribbed profile rods |
US4884915A (en) * | 1985-05-24 | 1989-12-05 | Peter Camitz | Jointing device primarily for scaffold or stand system |
EP0349493A1 (en) * | 1988-04-08 | 1990-01-03 | Fedon, Raffaele | Hollow nodal element for lattice spatial structures with ribbed profiled rods |
US4998842A (en) * | 1990-04-30 | 1991-03-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Overcenter collet space station truss fastener |
US5095677A (en) * | 1986-09-22 | 1992-03-17 | Les Concepts Polystand Inc. | Combination for use in mounting a modular system |
FR2679577A1 (en) * | 1991-07-09 | 1993-01-29 | Yamaha Motor Co Ltd | Connector for underwater structures |
WO1995007416A1 (en) * | 1993-09-07 | 1995-03-16 | Mcgaffigan Thomas H | Flexible tie strut |
US5427472A (en) * | 1992-10-29 | 1995-06-27 | Ono; Taisaburo | Underwater truss structure |
US5498094A (en) * | 1993-06-04 | 1996-03-12 | Kawatetsu Kenzai Kogyo Kabushiki Kaisha | Double steel pipe structural member |
US5632129A (en) * | 1994-07-14 | 1997-05-27 | Kawatetsu Kenzai Kabushiki Kaisha | Joint device for joining pretensioned brace member to connector nodes in space truss structure |
US5758960A (en) * | 1996-09-20 | 1998-06-02 | Rocque; Darren C. | Joint for lamps and the like |
US20050229863A1 (en) * | 2003-01-27 | 2005-10-20 | Larry Harper | Artificial reef |
US20060257209A1 (en) * | 2005-05-13 | 2006-11-16 | Piao-Chin Li | Trussed embankment dam and wall structure |
US20080247813A1 (en) * | 2007-01-09 | 2008-10-09 | Klein Timothy W | Socketing material and speltered assembly for terminating tension member |
DE102007054205A1 (en) * | 2007-11-12 | 2009-05-20 | Leiseder, Ulrich, Dr.-Ing. Dipl.-Phys. | Staff structure |
US20090311053A1 (en) * | 2008-06-11 | 2009-12-17 | Koichi Paul Nii | Terraced Structured Land Joint and Assembly System |
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US20100059728A1 (en) * | 2006-07-14 | 2010-03-11 | Justin Bishop | Security barrier |
CN101864724A (en) * | 2009-04-20 | 2010-10-20 | 桥梁永恒创新有限责任公司 | The flitch-trussed beam node connecting structure of flitch-trussed beam web member and use flitch-trussed beam web member |
US20100319280A1 (en) * | 2008-02-01 | 2010-12-23 | Supportec Co., Ltd. | Precast Temporary Facility Structure and a Construction Method for the Same |
CN101387131B (en) * | 2008-09-25 | 2011-01-19 | 中国建筑第六工程局有限公司 | Cable support welding sphere joints of wide span prestressing force beam string structure and manufacturing method thereof |
US20120091412A1 (en) * | 2010-10-14 | 2012-04-19 | Justin Bishop | Security barrier system |
US8475074B1 (en) * | 2006-03-01 | 2013-07-02 | Hrl Laboratories, Llc | Variable stiffness joint mechanism |
US20130213908A1 (en) * | 2010-08-30 | 2013-08-22 | C E S Control Enclosure Systems Gmbh | Rack |
US20140069882A1 (en) * | 2012-09-07 | 2014-03-13 | Donido Enterprise Co., Ltd. | Joining connectors and a rack using joining connectors |
US8739725B2 (en) | 2011-09-01 | 2014-06-03 | Halo Maritime Defense Systems, Inc. | Marine barrier gate |
US8801327B2 (en) | 2011-08-04 | 2014-08-12 | Halo Maritime Defense Systems, Inc. | Marine ropeway |
US20150159361A1 (en) * | 2012-07-30 | 2015-06-11 | Jfe Civil Engineering & Construction Corp. | Pin joint type structural member made of double steel pipe for restraining buckling thereof |
US20150167288A1 (en) * | 2012-07-06 | 2015-06-18 | Paul Harkin | Adjustable Structures |
ES2543256A1 (en) * | 2015-02-18 | 2015-08-17 | Eduardo Herrezuelo De La Sierra | Spatial structure (Machine-translation by Google Translate, not legally binding) |
US10145659B1 (en) | 2017-08-25 | 2018-12-04 | Halo Maritime Defense Systems, Inc. | Rapidly deployable single net capture marine barrier system |
USD848083S1 (en) * | 2017-05-26 | 2019-05-07 | PetSmart Home Office, Inc. | Chew toy |
US10378198B2 (en) * | 2015-08-27 | 2019-08-13 | Airbus Operations Gmbh | Rotary joint, framework construction kit, framework with rotary joints and method for manufacturing a rotary joint |
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Publication number | Priority date | Publication date | Assignee | Title |
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US4074497A (en) * | 1976-06-01 | 1978-02-21 | Taisaburo Ono | Underwater trusses for breakwater structure |
US4131380A (en) * | 1976-12-30 | 1978-12-26 | Bliquy Michael C De | Shaft end coupling means |
WO1979000084A1 (en) * | 1977-08-03 | 1979-02-22 | D Mansen | Method and means for beach restoration |
US4313287A (en) * | 1980-01-25 | 1982-02-02 | Romig Jr Byron A | Internally tensioned structural member and method of assembling same |
US4398377A (en) * | 1980-01-25 | 1983-08-16 | Romig Jr Byron A | Structural member with equalized internal tension |
US4648223A (en) * | 1983-12-14 | 1987-03-10 | Bouygues | Concrete structure, block for making such structure and method of making such structure |
US4653959A (en) * | 1983-12-14 | 1987-03-31 | Bouygues | Ballastable concrete base for an offshore platform |
US4726923A (en) * | 1983-12-14 | 1988-02-23 | Bouygues | Method of making concrete structures of prefabricated blocks |
US4610561A (en) * | 1984-12-31 | 1986-09-09 | Italtel Tecnomeccanica S.P.A. | Sectional structure for carpentry, particularly to realize cubicles |
US4884915A (en) * | 1985-05-24 | 1989-12-05 | Peter Camitz | Jointing device primarily for scaffold or stand system |
US4866902A (en) * | 1986-04-11 | 1989-09-19 | Wayne State University | Joint for space frame |
US5095677A (en) * | 1986-09-22 | 1992-03-17 | Les Concepts Polystand Inc. | Combination for use in mounting a modular system |
FR2609741A1 (en) * | 1987-01-20 | 1988-07-22 | Lahaye Claude | THREE DIMENSIONAL SPATIAL STRUCTURE |
EP0278939A1 (en) * | 1987-01-20 | 1988-08-17 | Claude Lahaye | Three-dimensional space structure |
US4763459A (en) * | 1987-04-01 | 1988-08-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Collet lock joint for space station truss |
EP0349493A1 (en) * | 1988-04-08 | 1990-01-03 | Fedon, Raffaele | Hollow nodal element for lattice spatial structures with ribbed profiled rods |
EP0337961A1 (en) * | 1988-04-08 | 1989-10-18 | Fedon, Raffaele | Nodal element for lattice spatial structures with ribbed profile rods |
US4998842A (en) * | 1990-04-30 | 1991-03-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Overcenter collet space station truss fastener |
FR2679577A1 (en) * | 1991-07-09 | 1993-01-29 | Yamaha Motor Co Ltd | Connector for underwater structures |
US5310273A (en) * | 1991-07-09 | 1994-05-10 | Yamaha Hatsudoki Kabushiki Kaisha | Joint for truss structure |
US5427472A (en) * | 1992-10-29 | 1995-06-27 | Ono; Taisaburo | Underwater truss structure |
US5498094A (en) * | 1993-06-04 | 1996-03-12 | Kawatetsu Kenzai Kogyo Kabushiki Kaisha | Double steel pipe structural member |
WO1995007416A1 (en) * | 1993-09-07 | 1995-03-16 | Mcgaffigan Thomas H | Flexible tie strut |
US5667326A (en) * | 1993-09-07 | 1997-09-16 | Mcgaffigan; Thomas H. | Flexible tie strut |
US5433549A (en) * | 1993-09-07 | 1995-07-18 | Thomas H. McGaffigan | Flexible tie strut |
US5632129A (en) * | 1994-07-14 | 1997-05-27 | Kawatetsu Kenzai Kabushiki Kaisha | Joint device for joining pretensioned brace member to connector nodes in space truss structure |
US5758960A (en) * | 1996-09-20 | 1998-06-02 | Rocque; Darren C. | Joint for lamps and the like |
US20050229863A1 (en) * | 2003-01-27 | 2005-10-20 | Larry Harper | Artificial reef |
US20060257209A1 (en) * | 2005-05-13 | 2006-11-16 | Piao-Chin Li | Trussed embankment dam and wall structure |
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US8475074B1 (en) * | 2006-03-01 | 2013-07-02 | Hrl Laboratories, Llc | Variable stiffness joint mechanism |
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US8327506B2 (en) | 2007-01-09 | 2012-12-11 | Wireco Worldgroup Inc. | Socketing material and speltered assembly for terminating tension member |
US20080247813A1 (en) * | 2007-01-09 | 2008-10-09 | Klein Timothy W | Socketing material and speltered assembly for terminating tension member |
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US10145659B1 (en) | 2017-08-25 | 2018-12-04 | Halo Maritime Defense Systems, Inc. | Rapidly deployable single net capture marine barrier system |
US20210112786A1 (en) * | 2018-02-12 | 2021-04-22 | David Fries | Biomimetic Sentinel Reef Structures for Optical Sensing and Communications |
US11877563B2 (en) * | 2018-02-12 | 2024-01-23 | David Fries | Biomimetic sentinel reef structures for optical sensing and communications |
WO2020123818A1 (en) * | 2018-12-13 | 2020-06-18 | Etegent Technologies Ltd. | Preloaded strut |
US20220032481A1 (en) * | 2018-12-13 | 2022-02-03 | Etegent Technologies Ltd. | Preloaded strut |
US12083674B2 (en) * | 2018-12-13 | 2024-09-10 | Etegent Technologies, Ltd. | Preloaded strut |
US11686557B2 (en) | 2020-06-19 | 2023-06-27 | Halo Maritime Defense Systems, Inc. | Compliant single net marine barrier |
US11635107B1 (en) * | 2021-04-22 | 2023-04-25 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space | Multi-link spherical joint with collocated centers of rotation |
EP4261422A1 (en) * | 2022-04-13 | 2023-10-18 | Andreas Kisch | Connection system |
Also Published As
Publication number | Publication date |
---|---|
JPS4994140A (en) | 1974-09-06 |
JPS523487B2 (en) | 1977-01-28 |
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