TIDE SELF TUNING MODULAR WHARF RESILIENT CONNECTION SYSTEM AND METHOD
A connector for connecting a floating module to a beached module of a modular wharf, the connector comprising: a resilient member adapted for resiliently opposing movement of the floating module toward the beached module; a sliding connector for slidably connecting said floating module to said beached module to allow vertical movement of the floating module relative to the beached module during tides of said body of water while restricting horizontal and lateral movement of said floating module.
This application claims priority under 35USC§119(e) of U.S. provisional patent application 61/380,610 filed Sep. 7, 2010, U.S. provisional patent application 61/405,857 filed Oct. 22, 2010, U.S. provisional patent application 61/409,726 filed Nov. 3, 2010, U.S. provisional patent application 61/411,243 filed Nov. 8, 2010 and U.S. provisional patent application 61/414,745 filed Nov. 17, 2010, the specifications of which are hereby incorporated by reference.
TECHNICAL FIELDThe invention relates to a modular wharf. More specifically, it concerns a connector which links a floating module to a beached module of a modular wharf.
BACKGROUND OF THE ARTModular wharves can be used wherever there is a need to compensate for the lack of infrastructures or to improve existing installations. Floating wharves can be built using barges. Examples of barges that can be used are sectional barges, deck barges, hopper barges, dump scow barges, dredging barges, crane barges, steel caisson, etc. They are an alternative to permanent wharves which require dredging, dynamiting, pouring concrete, rock filling and lengthy, costly construction. Modular wharves can be dismantled and removed once their purpose is over. They are used for loading and unloading of all types of cargo or for docking ships. They are accessible in all tide conditions. Cargo handling systems such as cranes, conveyors, lifts and others are provided on the floating wharf.
Resilient connectors are used between the modules which make up the pathways or the docking section to ensure a stable, solid and flexible wharf. The energy caused by the movements of the wharf units is dissipated at the resilient connector thereby allowing a solid yet flexible structure. The resilient connector may be pre-compressed during installation to add or to increase the wharf stability and rigidity. The connectors may be of different types. They include a compressible element, such as rubber, and a tension element which is, for example, adjustable using a tightening assembly, a hydraulic cylinder, etc.
In some situations according to bathymetry pattern, there is a need for the use of a beached wharf module together with the floating modules which could reduce the environmental impact of the modular wharf by reducing the amount of embankment, reducing installation costs and providing a sound and stable abutment. There would therefore be a need for a resilient connector between the beached module and the floating module(s) which would be designed to respond to tide movements without compromising the resilient connection behavior.
SUMMARYAccording to one broad aspect of the present invention, there is provided a connector for connecting a floating module to a beached module of a modular wharf, the connector comprising: a resilient member adapted for resiliently opposing movement of the floating module toward the beached module; a wall member having a resilient member side and a slider side; a fastening assembly to secure the wall member to a first wharf module chosen from the floating module and the beached module and to sandwich the resilient member between the resilient member side of the wall member and a face of the first wharf module, the resilient member side facing the face of the first wharf module; a slider assembly having two sliding sections, one sliding section of the two sliding sections being affixed to the slider side of the wall member and another sliding section of the two sliding sections being affixed to a face of a second wharf module, the second wharf module being a different one of the floating module and the beached module, the slider side of the wall member facing the face of the second wharf module, the sliding sections being adapted to be slidably interconnected thereby securing the wall member to the second wharf module and being adapted to slide with respect to one another to allow vertical displacement of the wall member with respect to the second wharf module.
In one embodiment, the first wharf module is a floating module and the second wharf module is a beached module.
In one embodiment, the connector further comprises a chain assembly for securing the resilient member to the first wharf module, the chain assembly including chains.
In one embodiment, the fastening assembly further includes a tension loader, the tension loader being adapted to move the wall member towards the face of the first wharf module thereby compressing the resilient member.
In one embodiment, the resilient member is a pneumatic fender.
In one embodiment, the resilient member side of the slider member is concave between a top of the slider member and a bottom of the slider member.
In one embodiment, one of the two sliding sections of the slider assembly comprises a roller support with rollers and another one of the two sliding sections comprises at least one channel for receiving the rollers.
In one embodiment, one of the two sliding sections of the slider assembly comprises a protruding elongated flange and another one of the two sliding sections comprises a recessed elongated member for receiving the protruding elongated flange.
In one embodiment, the flange is one of trapeze-shaped, H-shaped, T-shaped, C-shaped and O-shaped.
In one embodiment, the connector further comprises an elongated connector, wherein both of the two sliding sections of the slider assembly comprise a recessed elongated member each for receiving a side of the elongated connector.
In one embodiment, the connector further comprises an elongated connector, wherein both of the two sliding sections of the slider assembly comprise a protruding elongated member and the elongated connector has an elongated recessed channel on each side for receiving both the protruding elongated members.
In one embodiment, the elongated connector is made of a resilient material.
In one embodiment, the connector further comprises a stopper provided on at least one of the sliding section, and the wall member for limiting displacement of at least one of the sliding sections of the slider assembly.
In one embodiment, the wall member is buoyant.
In one embodiment, the wall member is hollow and sealed.
In one embodiment, the wall member is made of a buoyant material.
In one embodiment, the two sliding sections of the slider assembly are elongated and extend generally vertically.
According to another broad aspect of the present invention, there is provided a modular wharf comprising: a beached module secured to a bottom of a body of water to prevent vertical movement of the beached module during tides of the body of water; a floating module disposed on a surface of the body of water, near the beached module; a resilient member adapted for resiliently opposing movement of the floating module toward the beached module; a sliding connector for slidably connecting the floating module to the beached module to allow vertical movement of the floating module relative to the beached module during tides of the body of water while restricting horizontal and lateral movement of the floating module.
According to another broad aspect of the present invention, there is provided a connector for connecting a floating module to a beached module of a modular wharf, the connector comprising: a resilient member adapted for resiliently opposing movement of the floating module toward the beached module; a sliding connector for slidably connecting said floating module to said beached module to allow vertical movement of the floating module relative to the beached module during tides of said body of water while restricting horizontal and lateral movement of said floating module.
In one embodiment, the sliding connector further comprises: A wall member having a resilient member side and a slider side; A fastening assembly to secure said wall member to a first wharf module chosen from said floating module and said beached module and to sandwich said resilient member between said resilient member side of said wall member and a face of said first wharf module, said resilient member side facing said face of said first wharf module; A slider assembly having two sliding sections, one sliding section of said two sliding sections being affixed to said slider side of said wall member and another sliding section of said two sliding sections being affixed to a face of a second wharf module, said second wharf module being a different one of said floating module and said beached module, said slider side of said wall member facing said face of said second wharf module, said sliding sections being adapted to be slidably interconnected thereby securing said wall member to said second wharf module and being adapted to slide with respect to one another.
In one embodiment, the sliding connector further comprising two sliding sections, each sliding section of said two sliding sections being affixed to one of said floating module and beached module each of said sliding sections being adapted to receive a portion of said resilient member and to be slidably interconnected using said resilient member thereby interconnecting said floating module to said beached module and being adapted to slide with respect to one another to allow vertical displacement of said floating module with respect to said s beached module.
In one embodiment, the resilient member is made of an elastomeric resilient material.
In one embodiment, the resilient member has a cross-sectional shape with two opposed protruding ends and each protruding end of the connector is received in a corresponding recessed section of one of said sliding sections.
In one embodiment, the resilient member has a cross-sectional shape with two opposed recessed ends, wherein both of said two sliding sections have a protruding elongated member and said recessed ends of said resilient member receiving both said protruding elongated members.
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration example embodiments thereof and in which:
It will be noted that throughout the appended drawings, like features are identified by like reference numerals.
DETAILED DESCRIPTIONThe present invention concerns a modular wharf design with a tide self tuning resilient connector.
The Embankment 111 gives access from the ground to the Modular Wharf. Two Ramps 110 allow vehicle or pedestrian circulation between wharf modules. Shore Boundary Line 112 will move back and forth according to tide level.
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The Fender Assembly 303 transfers and absorbs loads from Floating Module 103 to Sliding & Floating Back Wall Assembly 304. X-Cables Assembly 301 attaches Sliding & Floating Back Wall Assembly 304 to Floating Modules 103. The Sliding & Floating Back Wall Assembly 304 moves on Sliders Assembly 302 which are attached on the vertical wall of Beached module 102. One Cable end of both cables of the X-Cables Assembly 301 is attached to a Tension Puller 305. Wear Pads 306 can be installed where the cables cross to protect them from wear. The other ends of both cables of X-Cables Assembly 301 are affixed to Retainers 307 which are themselves attached to the top of the Sliding & Floating Back Wall 308. The Pneumatic Fender 309 leans on the vertical surface of the Floating Module 103 and is retained to it by Chains 310. It also leans on the other side on the Sliding & Floating Back Wall 308.
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Depending on the load cases and/or situations, it is possible to choose the most adequate sliding device. Examples of such sliding devices are shown in
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As will be readily apparent to one skilled in the art, the guiding plates and corresponding sliding plates of the example embodiments of
As will be readily understood, different configurations of the Tide Self Tuning Resilient Connector are possible without departing from the present invention.
As will be readily apparent to one skilled in the art, the fender of the resilient connector could be attached to the beached module, the Sliding & Floating Back Walls Assembly 304 could face the floating module and the guiding plate could be provided on the wall of the floating module without departing from the present invention.
The embodiment of
Such an embodiment where the Pneumatic Fender 309 is omitted is shown in
Versions of the embodiments of
As will be readily apparent to one skilled in the art, any means could be used to affix parts to other parts, such as welding, screwing, attaching, fusing, gluing, etc.
As will be readily apparent to one skilled in the art, parts shows as separate components attached to one another could be manufactured as a single integral piece and vice versa.
As will be readily apparent to one skilled in the art, different combinations of illustrated configurations can be used and other configurations can be implemented without departing from the present invention.
In UseThe Beached module 102 provides a sound and stable abutment from which Tide Self Tuning Resilient Connectors 115 move up and down in a synchronized way with Floating Modules 103, according to the tide level. Sliding & Floating Back Walls Assembly 304 is attached, using X-Cables Assembly 301, to the Floating Modules 103. These walls ensure a proper seat for Pneumatic Fenders 309 by having a concave shape which contains (acting as movement stopper) the Pneumatic Fenders 309 and transmits compression loads to the Beached module 102 under any tide levels. As will be readily understood, the concave shape of the wall is optional and the resilient connector would still be useful with a straight wall.
The vertical up and down movements of Sliding & Floating Back Wall Assembly 304, created by its own buoyancy, can be optionally limited in both directions by stoppers or shock absorbers (not shown here) in order to dampen wall movements and provide restrictions on the possible displacement of the wall.
The movement of the Sliding & Floating Back Wall Assembly 304 is guided by the Sliders Assembly 302 which can take different configurations as shown in
One end of both cables of the X-Cable Assembly 301 is connected to a Tension Puller 305 which is soundly welded on the deck of the Floating Module 103 in order to set and pre stress X-Cables. The pre-stress is used to change the connection behavior by limiting allowed displacement for instance. The other ends of these cables are equipped with spelter sockets which are inserted into Retainer 307. A trade-off between the displacement and the amount of load transferred is to be taken into account at the time of selecting the specific embodiment. Wear Pads 306 installed on the X-Cable Assembly remove some of the friction in case of cable contact. They protect cables against harmful wear. Wear Pads 306 can be two half sleeves fastened together at equidistance from both cable ends. They can be made of Ultra-high-molecular-weight polyethylene (UHMWPE), for example.
The Tide Self Tuning Resilient Connectors 115 let the Floating Modules 103 move almost independently and freely (having their own trim and heel angle) under waves, wind or vessel impact loads. The Tide Self Tuning Resilient Connectors 115 damp displacement of the Floating Modules, ensuring rapid energy dissipation and an adequate load transfer from Floating Modules 103 to Beached module 102. The Tide Self Tuning Resilient Connectors 115 behave as a displaceable ball-and-socket joint through interplay between X-Cables Assembly 301 which withstand tension stresses and Fender Assembly 303 which withstand compression loads. This behavior is the same at any tide level because the Tide Self Tuning Resilient Connectors 115 follow tide, providing conditions to let the ball-and-socket joint work properly.
Example ApplicationA modular wharf has been designed according to
The Floating Modules 103 were designed to support two 250 ton shiploaders in a way to allow loading operations under the following conditions: 30 knots wind speed and 2 knots water current for a total longitudinal drag force of 325 ton and transversal drag force of 135 ton applied horizontally on Floating Modules 103; 5 feet wave height; Wave length with short breaking wave up to 20 feet; 7 feet tide; Mooring impact of 320 ton; 25 years of operations. All components have been calculated with a safety factor of 3. The maximum floating module longitudinal movement (displacement) allowable was less than 3.5 ft.
Off Shore Anchors 108, Shore Anchor 109 and Cables 106 should withstand 300 ton tension loads. The Anchor Chain 107 has a proof test load of 450 ton and Spuds 105 should resist to 270 ton radial load. Fenders 102 have an 11 ft diameter and are 21 ft long and can withstand compression loads of 320 ton. They are supported both sides by Chains with chainmail rod of 2 inches diameter.
Tide Self Tuning Resilient Connectors 204 are made of Pneumatic Fenders 309 of 11 feet diameter and 21 feet long. These fenders can withstand compression loads of 320 ton. They are supported on both sides by Chains 310 with chainmail rod of 2 inch diameter. The Sliding & Floating Back Wall 308 is 40 feet long, 18 feet high, 40 inch thick at the top and bottom, and 25 inch thick at the middle height. The back wall exterior skin is watertight and made of ⅜ inch sheet metal thickness. The wall is reinforced in a way to withstand a compression distributed load of 320 ton and 320 ton tension load applied at the top under any tide conditions. Each Slider Assembly 302 is attached on vertical wall of Beached module 102. The Slider Assembly 302 is about 18 feet high, 30 inch wide and 14 inch thick. A pair of Sliders Assembly 302 can withstand tension and compression load of 320 ton to any position between low tide and high tide cases. One end of both cables of the X-Cable Assembly 301 is connected to a Tension Puller 305 which can sustain 300 ton. The other ends of both cables of X-Cables Assembly 301 are affixed to 300 ton capacity Retainers 307 which are themselves welded on the top of the Sliding & Floating Back Wall 308. X-Cables are 2 inch diameter steel wire rope. They are pre stressed at 10% of their tension load capacity. A distance of 3 inches is maintained between cables but in the case of cable contact, Wear Pads 306 allow friction free relative movement. Wear Pads 306 are UHMW half sleeves ½ inch thick and 24 inch long that are fastened together with screws at equidistance from both cable ends.
For the first year installation of the Modular Wharf, all components are installed and assembled. In most applications installed where water can freeze, the Beached module will be kept in place year-round, even during the winter and the rest of the Module Wharf will be dismantled for winter. During the next year installation, the Modular Wharf will be reassembled and attached to the existing Beached module.
The embodiments described above are intended to be exemplary only. The scope of the invention is therefore intended to be limited solely by the appended claims.
Claims
1. A connector for connecting a floating module to a beached module of a modular wharf, the connector comprising:
- a resilient member adapted for resiliently opposing movement of the floating module toward the beached module;
- a sliding connector for slidably connecting said floating module to said beached module to allow vertical movement of the floating module relative to the beached module during tides of said body of water while restricting horizontal and lateral movement of said floating module.
2. The connector as claimed in claim 1, wherein said sliding connector further comprises:
- A wall member having a resilient member side and a slider side;
- A fastening assembly to secure said wall member to a first wharf module chosen from said floating module and said beached module and to sandwich said resilient member between said resilient member side of said wall member and a face of said first wharf module, said resilient member side facing said face of said first wharf module;
- A slider assembly having two sliding sections, one sliding section of said two sliding sections being affixed to said slider side of said wall member and another sliding section of said two sliding sections being affixed to a face of a second wharf module, said second wharf module being a different one of said floating module and said beached module, said slider side of said wall member facing said face of said second wharf module, said sliding sections being adapted to be slidably interconnected thereby securing said wall member to said second wharf module and being adapted to slide with respect to one another.
3. The connector as claimed in claim 2, wherein said first wharf module is a floating module and said second wharf module is a beached module.
4. The connector as claimed in claim 2, further comprising a chain assembly for securing said resilient member to said first wharf module, said chain assembly including chains.
5. The connector as claimed in claim 2, wherein said fastening assembly further includes a tension loader, said tension loader being adapted to move said wall member towards said face of said first wharf module thereby compressing said resilient member.
6. The connector as claimed in claim 2, wherein said resilient member is a pneumatic fender.
7. The connector as claimed in claim 2, wherein said resilient member side of the slider member is concave between a top of said slider member and a bottom of said slider member.
8. The connector as claimed in claim 2, wherein one of said two sliding sections of said slider assembly comprises a roller support with rollers and another one of said two sliding sections comprises at least one channel for receiving said rollers.
9. The connector as claimed in claim 2, wherein one of said two sliding sections of said slider assembly comprises a protruding elongated flange and another one of said two sliding sections comprises a recessed elongated member for receiving said protruding elongated flange.
10. The connector as claimed in claim 9, wherein said flange is one of trapeze-shaped, H-shaped, T-shaped, C-shaped and O-shaped.
11. The connector as claimed in claim 2, further comprising an elongated connector, wherein both of said two sliding sections of said slider assembly comprise a recessed elongated member each for receiving a side of said elongated connector.
12. The connector as claimed in claim 2, further comprising an elongated connector, wherein both of said two sliding sections of said slider assembly comprise a protruding elongated member and said elongated connector has an elongated recessed channel on each side for receiving both said protruding elongated members.
13. The connector as claimed in claim 11, wherein said elongated connector is made of a resilient material.
14. The connector as claimed in claim 2, further comprising a stopper provided on at least one of said sliding section, and said wall member for limiting displacement of at least one of said sliding sections of said slider assembly.
15. The connector as claimed in claim 2, wherein said two sliding sections of said slider assembly are elongated and extend generally vertically.
16. The connector as claimed in claim 1, wherein said sliding connector further comprising two sliding sections, each sliding section of said two sliding sections being affixed to one of said floating module and beached module each of said sliding sections being adapted to receive a portion of said resilient member and to be slidably interconnected using said resilient member thereby interconnecting said floating module to said beached module and being adapted to slide with respect to one another to allow vertical displacement of said floating module with respect to said s beached module.
17. The connector as claimed in claim 16, wherein said resilient member is made of an elastomeric resilient material.
18. The connector as claimed in claim 16, wherein said resilient member has a cross-sectional shape with two opposed protruding ends and each protruding end of the connector is received in a corresponding recessed section of one of said sliding sections.
19. The connector as claimed in claim 16, wherein said resilient member has a cross-sectional shape with two opposed recessed ends, wherein both of said two sliding sections have a protruding elongated member and said recessed ends of said resilient member receiving both said protruding elongated members.
20. A modular wharf comprising:
- a beached module secured to a bottom of a body of water to prevent vertical movement of the beached module during tides of said body of water;
- a floating module disposed on a surface of said body of water, near said beached module;
- a resilient member adapted for resiliently opposing movement of the floating module toward the beached module;
- a sliding connector for slidably connecting said floating module to said beached module to allow vertical movement of the floating module relative to the beached module during tides of said body of water while restricting horizontal and lateral movement of said floating module.
Type: Application
Filed: Sep 6, 2011
Publication Date: Mar 8, 2012
Inventors: Jacques TANGUAY (Chateau-Richer), François CÔTÉ (St-Etienne-de-Lauzon), Bruno LECLERC (Montmagny), Octavian Corneliu TOMA (Quebec)
Application Number: 13/225,652
International Classification: E02B 3/20 (20060101);