FLOATING MODULE OF A FLOATING STRUCTURE AND METHOD FOR JOINING SUCH FLOATING MODULES
20210347447 · 2021-11-11
Inventors
Cpc classification
B63B35/38
PERFORMING OPERATIONS; TRANSPORTING
B63B35/44
PERFORMING OPERATIONS; TRANSPORTING
International classification
B63B35/38
PERFORMING OPERATIONS; TRANSPORTING
B63B35/44
PERFORMING OPERATIONS; TRANSPORTING
Abstract
The invention relates to a floating module (1) comprising a plurality of walls (2) extending between a first longitudinal end (4) and a second longitudinal end (6), the floating module (1) comprising a first partition (8) and a second partition (10) connecting each wall (2) of the plurality of walls, defining an internal volume (12) of the floating module (1), characterized in that the floating module (1) comprises at least one extension (14) emerging from an external face (16) of the wall (2), the extension (14) extending longitudinally in projection from the first longitudinal end (4) or from the second longitudinal end (6), the extension (14) and the wall (2) being materially integral. The invention also relates to a method for joining a first floating module (3) and a second floating module (5).
Claims
1. A floating module comprising a plurality of walls extending between a first longitudinal end and a second longitudinal end, the floating module comprising a first partition and a second partition connecting each wall of the plurality of walls defining with these walls an internal volume of the floating module, characterized in that the floating module comprises at least one extension emerging from an external face of the wall, the extension extending longitudinally in projection from the first longitudinal end or from the second longitudinal end the extension and the from which the extension emerges being materially integral.
2. The floating module according to claim wherein one edge of one longitudinal end of the wall and the extension bound a cavity at least partly.
3. The floating module according to claim 2, wherein a thickness of the cavity is equal to or greater than a thickness of the wall from which the extension emerges.
4. The floating module according to claim 1, wherein the external face of the wall and an internal face of the extension lie in the same plane.
5. The floating module according to claim 1, wherein an extension is situated on each of the lateral walls of the floating module and on a bottom wall of the floating module.
6. The floating module according to claim 1, wherein the wall comprises a first extension situated in the area of the first longitudinal end and a second extension situated in the area of the second longitudinal end.
7. The floating module according to claim 1, wherein the plurality of walls the first partition the second partition and the extension are formed of integral material, said material being concrete.
8. The floating module according to claim 2, wherein a metal reinforcement extends inside one wall and emerges into the cavity.
9. The floating module according to claim 2, comprising a prestressing sheath extending inside one wall and emerging into the cavity.
10. A floating structure comprising at least one floating module according to claim 1.
11. The floating structure according to claim 10, wherein a sealing device is located between a first floating module and a second floating module both of them being designed according to claim 1, the sealing device being inserted between an extension of the first floating module and an extension of the second floating module.
12. The floating structure according to claim 11, wherein a hollow bounded by a cavity of the first floating module and by a cavity of the second floating module is filled with concrete.
13. The floating structure according to claim 12, wherein a continuity between a metal reinforcement of the first floating module and a metal reinforcement of the second floating module, and/or a continuity between a prestressing sheath of the first floating module and a prestressing sheath of the second floating module is realized in the hollow.
14. The floating structure according claim 12, wherein a thickness of the wall of the first floating module is equal to a thickness of the of the second floating module, the thickness of the wall of the first floating module and the thickness of the wall of the second floating module being equal to a thickness of the hollow.
15. A method for assembling a floating structure according to claim 11, the assembly method involving a step of alignment of the first floating module relative to the second floating module, a step of removable coupling of the first floating module to the second floating module, and a step of casting concrete in the hollow.
16. The method of assembly according to claim 15, the assembly method involving a step of emptying a space bounded by the partitions, by the extension of the first floating module and by the extension of the second floating module.
17. The method of assembly according to claim 15, the assembly method involving a step of mechanical connection between a metal reinforcement of the first floating module and a metal reinforcement of the second floating module.
18. The method of assembly according to claim 15, the assembly method involving, after the step of concrete casting, a step of installation of at least one prestressing cable laid in a prestressing sheath of the first floating module and in a prestressing sheath of the second floating module, a traction force being then applied to the prestressing cable.
Description
[0047] Other characteristics, details and advantages of the invention will emerge more clearly upon reading the following description, on the one hand, and from several exemplary embodiments, provided for information and not for limitation, with reference to the accompanying schematic drawings, on the other hand, there being shown:
[0048]
[0049]
[0050]
[0051]
[0052]
[0053]
[0054]
[0055]
[0056]
[0057] The characteristics, the variants and the different embodiments of the invention may be associated with one another in different combinations, as long as they are not incompatible or mutually exclusive with each other. In particular, one could conceive of variants of the invention comprising only a selection of characteristics described hereafter in isolation from other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention with regard to the prior art.
[0058] In particular, all the variants and all the embodiments described can be combined with each other, if nothing prevents such a combination in technical respects.
[0059]
[0060] The floating module 1 comprises a plurality of walls, each wall 2 extending along the longitudinal axis X between a first longitudinal end 4 and a second longitudinal end 6. The walls 2 are joined together by a first partition 8 and a second partition 10 situated respectively in proximity to the first longitudinal end 4 and the second longitudinal end 6. Thus, the plurality of walls, the first partition 8 and the second partition 10 define an internal volume 12, substantially closed, which is designed to be filled with a material having a specific gravity less than that of water, in order to ensure the floatation of the floating module 1. Hence, a first portion 41 of the floating module 1 is submerged, that is, situated beneath a water line 43, while a second portion 42 situated at the opposite side of the floating module in regard to the first portion 41 along the vertical axis Z is emerged, that is, situated above the water line, in the air.
[0061] In the embodiment illustrated, the internal volume 12 is traversed by an intermediate wall 2′ extending primarily in the longitudinal axis between the first partition 8 and the second partition 10, the internal volume 12 thus forming a first chamber 13 and a second chamber 15. The intermediate wall 2′ makes it possible to reinforce the structure of the floating module 1.
[0062] Thus, each wall 2 comprises an internal face 17 and an external face 16 situated on the opposite side of the wall 2 in regard to the internal face, said internal face 17 being oriented toward the internal volume 12.
[0063] A plurality of metal reinforcements 22 extend longitudinally through the floating module, each metal reinforcement 22 being designed to be connected to a metal reinforcement 22 of a second floating module. Thus, the metal reinforcements 22 make it possible to join together multiple floating modules. On the other hand, the metal reinforcements 22 make it possible to ensure the resistance of the floating module 1 and the floating structure to mechanical forces, more particularly to mechanical traction forces, especially in the case when the walls 2, the first partition 8 and the second partition 10 of the floating module are made of a material such as concrete, which is highly resistant to mechanical compression forces but little resistant to mechanical traction forces. It will be noted that, in the exemplary embodiment illustrated, a metal reinforcement 22 extends inside the intermediate wall 2′.
[0064] In a similar manner, the floating module 1 comprises a plurality of prestressing sheaths 24 extending longitudinally through the floating module 1, each prestressing sheath 24 being designed to be connected to a prestressing sheath 24 of a second floating module. Each prestressing sheath 24 is configured to receive, once all of the floating modules have been joined together and aligned along the same axis, a prestressing cable passing through the prestressing sheath 24. Once the prestressing cable is laid through the prestressing sheath of each of the floating modules aligned on the same axis, a traction force is applied to the prestressing cable, making it possible to exert a compression force corresponding to said floating modules. In the exemplary embodiment illustrated, a prestressing sheath 24 extends inside each wall 2, said prestressing sheath being arranged through the material making up the wall, between the internal face 17 and the external face 16. It should be noted that a metal reinforcement 22 and/or a prestressing sheath 24 may be situated in any place of the floating module, in particular inside a wall 2, the metal reinforcement 22 and/or the prestressing sheath 24 extending primarily longitudinally.
[0065] An extension 14 emerges from the external face 16 of the first longitudinal end 4. Another extension 14 emerges likewise from the second longitudinal end 6 of each wall 2.
[0066] In other words, each wall 2 comprises a first extension 29 in the area of its first longitudinal end 4 and a second extension 31 in the area of its second longitudinal end 6. Thus, the extension 14 and the wall 2 are made of integral material.
[0067] Each extension 14 extends longitudinally in projection from the longitudinal end 4, 6 of the wall 2 from which said extension 14 extends, that is, the extension 14 extends longitudinally beyond an edge 11 of the wall formed by the first longitudinal end 4 or the second longitudinal end 6 of said wall, the extension 14 and the edge 11 of the wall thus bounding a cavity 18. The cavity 18 is designed to be filled with a material such as concrete, making it possible to assure a total mechanical continuity between the first floating module and a second floating module, and to obtain a modular floating structure which behaves like a monolithic structure having the same mechanical strength as the standard section of a floating module.
[0068] The floating module 1 comprises two first end stops 33 each extending longitudinally from the first partition 8 in a direction opposite the internal volume 12. In a similar manner, the floating module 1 comprises two second end stops 35 each extending longitudinally from the second partition 10 in a direction opposite the internal volume 12. Thus, the first end stops 33 and the second end stops 35 are designed to make contact with end stops present on a second floating module which is going to be joined to the floating module 1, the first end stops 33 and the second end stops 35 thus making it possible to define, when the floating module 1 is brought closer to the second floating module in order to form a floating structure, the moment at which the floating module 1 and the second floating module are sufficiently close to each other.
[0069]
[0070] The floating module 1 comprises an upper portion 50 designed to be oriented vertically upward when the floating module 1 is constructed on a body of water. The floating module thus also comprises a lower portion 51 situated at the opposite side of the floating module 1 in relation to the upper portion 50 along the vertical axis Z, the lower portion being designed to be submerged when the floating module 1 is constructed on a body of water.
[0071] The upper portion 50 comprises an upper wall 52 extending primarily in a third plane F comprising the transverse axis Y and the longitudinal axis X. In a similar manner, the lower portion 51 comprises a lower wall 53 extending primarily in the third plane F.
[0072] The floating module 1 comprises a first lateral wall 54 and a second lateral wall 55 extending primarily in the first plane D. The first lateral wall 54, the second lateral wall 55, the upper wall 52 and the lower wall 53 are arranged so that the first lateral wall 54 and the second lateral wall 55 are joined together by the upper wall 52 and the lower wall 53, the upper wall 52 and the lower wall 53 being joined together by the first lateral wall 54 and the second lateral wall 55. The upper wall 52, the lower wall 53, the first lateral wall 54 and the second lateral wall 55 in particular may each form a wall 2 in the sense of the invention.
[0073] It will be noted that, in the exemplary embodiment illustrated, the lower wall 53, the first lateral wall 54 and the second lateral wall 55 each comprise an extension 14. On the other hand, the upper wall 52 is lacking in an extension, the upper wall 52 thus forming a passage 56, in particular allowing easier access of a technician to a space located between the floating module and a second floating module which is going to be attached in order to form a floating structure.
[0074]
[0075] Thus, one may see that the extension 14 and the edge 11 of the wall are arranged so that the external face 16 of the wall and an internal face 20 of the extension 14, said internal face 20 of the extension being oriented toward the cavity 18, lie in the same plane P. More particularly, the cavity 18 extends along a first dimension 30, measured between the internal face 20 of the extension and a plane P formed by the internal face 17 of the wall 2 from which the extension 14 emerges. In a similar manner, the wall 2 extends along a second dimension 32, measured between its external face 17 and its internal face 16, the second dimension 32 thus corresponding to the thickness of the wall 2, the first dimension 30 being equal to the second dimension 32. It should be noted that the internal face of the extension and the external face of the wall are considered to lie in the same plane P if the difference between the first dimension 30 and the second dimension 32 is not more than 5% of the second dimension 32.
[0076] In one alternative of the invention, it is considered that the first dimension 30 is greater than the second dimension 32. In such a case, the extension reaches further peripherally and the minimum thickness needed to ensure the material continuity between two adjacent floating modules is assured.
[0077] Thus, the material designed to fill the cavity 18 makes it possible to prolong the wall 2 longitudinally along the entire second dimension of the wall 2, in other words, along the entire thickness of the wall. Thus, this configuration, when the floating module 1, so-called first floating module, is joined to an adjacent floating module, so-called second floating module, to form a floating structure according to the second aspect of the invention, makes it possible to assure a total mechanical continuity between the first floating module and a second floating module, and to obtain a modular floating structure which behaves like a monolithic structure having the same mechanical strength as the standard section of a floating module to withstand the mechanical forces, especially the compression forces, by the material filling the cavity, and more particularly the entire cavity 18, along the first dimension 30 of said cavity.
[0078] A sealing device 102 is situated at one longitudinal end 111 of the first extension 29. The sealing device 102 is in particular a gasket designed to be compressed between a first floating module and a second floating module in order to ensure the tightness of a space located between the first floating module and the second floating module. This sealing device 102 may be integrated with the first floating module or the second floating module.
[0079] The metal reinforcement 22 extends longitudinally in projection from the first longitudinal end 4 of the wall. In a similar manner, the prestressing sheath 24 extends longitudinally in projection from the first longitudinal end 4 of the wall, and in particular inside the wall, the prestressing sheath thus emerging into the cavity 18.
[0080]
[0081] The first floating module and the second floating module are represented in
[0082] Thus, a first longitudinal termination 26 of the first floating module is placed opposite a second longitudinal termination 28 of the second floating module. In this way, a cavity of the first floating module, called the first cavity 19, faces toward a cavity of the second floating module, called the second cavity 21. In a similar manner, the first extension 29 of the first floating module 3 is placed opposite the second extension 31 of the second floating module 5.
[0083] The first end stops 33 of the first floating module 3 face toward the second end stops 35 of the second floating module 5, the first end stops 33 being at a distance from the second end stops 35 of the second floating module 5.
[0084] On the other hand, each prestressing sheath 24 emerging from the first floating module 3, called the first prestressing sheath, faces toward a prestressing sheath 24 emerging from the second floating module 5, called the second prestressing sheath, to which it is going to be coupled. In a similar manner, each metal reinforcement 22 emerging from the first floating module 3, called the first metal reinforcement, faces toward a metal reinforcement 22 emerging from the second floating module 5, called the second metal reinforcement, to which it is going to be coupled.
[0085]
[0086] Thus, a connecting frame 110 ensures the position of the first floating module 3 relative to the second floating module 5. More particularly, the connecting frame 110, being a rigid structure, in particular one formed by a structure which is at least partly metallic, is secured on one wall 2, more particularly on an external face 16 of a wall, of the first floating module 3, and on one wall, more particularly on an external face 16 of a wall, of the second floating module 5. In the exemplary embodiment illustrated, the connecting frame 110 is secured on the upper wall 52 of the first floating module 3 and on the upper wall 52 of the second floating module 5. The securing of the connecting frame 110 on the second floating module 5 may be done prior to the securing of the connecting frame 110 on the first floating module 3. Thus, the second floating module 5 is brought closer to the first floating module 3 in order to become flush with the latter, so that the proximity between the first floating module 3 and the second floating module 5 is sufficient. The connecting frame 110 is then secured on the second floating module 5, thus assuring the relative position of the second floating module 5 with respect to the first floating module 3. Alternatively, the connecting frame 110 may be secured on the first floating module 3 and the second floating module 5 in a simultaneous, or nearly simultaneous, manner, once the proximity between the first floating module 3 and the second floating module 5 has been achieved.
[0087] When the proximity between the first floating module 3 and the second floating module 5 has been achieved, the sealing device 102 located in the area of the first longitudinal end 26 of the first floating module 3 and inserted between the first extension 29 of the first floating module 3 and the second extension 31 of the second floating module 5, said sealing device 102 is compressed between the first extension 29 and the second extension 31. Thus, the first cavity 19 and the second cavity 21 form a hollow 104, transversely bounded by the first extension and the second extension, the hollow being bounded longitudinally by the edge 11 of a wall of the first floating module 3 and the edge 11 of a wall of the second floating module 5. Moreover, the sealing device 102 likewise ensures the tightness of a space 106 bounded transversely by the first extension 29 and the second extension 31, the space 106 being bounded longitudinally by the first partition 8 of the first floating module 3 and by the second partition 10 of the second floating module 5.
[0088] It will thus be understood that the hollow 104 corresponds to the sum of the first cavity 19 and the second cavity 21, whereas the space 106 corresponds to the volume bounded vertically by the extensions 14 and longitudinally by the partitions 8,10 of the first floating module 3 and the second floating module 5.
[0089] The upper wall 52 of the first floating module 3 and the upper wall 52 of the second floating module 5 being both free of an extension, they thus form the passage 56 enabling access to the space 106, especially for the later steps of the joining together of the first floating module 3 and the second floating module 5, such as the step of emptying the space 106, or the step of mechanical connection between the metal reinforcements of the first floating module 3 and the metal reinforcements of the second floating module 5.
[0090] Hence, since the sealing device 102 ensures the tightness of the space 106, especially in the area of the lateral walls and the lower wall of the first floating module 3 and the second floating module 5, it is possible to carry out a step of emptying of that space 106. In fact, as the first floating module 3 and the second floating module 5 are assembled on a body of water, and thus each of them is partly submerged, water is therefore present inside the space 106 when the first floating module 3 and the second floating module are brought closer to each other. The step of emptying the space 106 thus allows a removal of the water present in the space 106, in order to carry out or facilitate the further steps in the joining together of the first floating module 3 and the second floating module 5.
[0091] The first end stops 33 of the first floating module 3, even though having been brought closer to the second end stops 35 of the second floating module 5, are still separated from the second end stops 35 of the second floating module 5, thus indicating that the first floating module 3 and the second floating module 5 need to be further brought closer in order to complete their assembly.
[0092]
[0093] The first floating module 3 and the second floating module 5 are joined together by a mechanical connection step between the first metal reinforcement and the second metal reinforcement. The mechanical connection between the first metal reinforcement and the second metal reinforcement is provided by a coupler 34, thus ensuring that the first floating module 3 and the second floating module 5 remain abutting against each other. Moreover, the connection between the first metal reinforcement and the second metal reinforcement assures the transmission of mechanical forces, especially traction forces, between the first floating module and the second floating module.
[0094] In a similar manner, each first prestressing sheath is connected to a second prestressing sheath by a hollow sleeve 36, ensuring the tightness of the interior of each prestressing sheath 24 while allowing a communication between the interior of the first prestressing sheath and the interior of the second prestressing sheath, thus enabling the passing of the prestressing cable through said first prestressing sheath and said second prestressing sheath.
[0095] The mechanical connection step also allows one to ensure that the proximity between the first floating module 3 and the second floating module 5 is sufficient. In fact, the first floating module 3 is brought closer to the second floating module 5, in particular thanks to the connection between the first metal reinforcements and the second metal reinforcements by way of the coupler 34, so that the first end stops 33 of the first floating module 3 come to bear against the second end stops 35 of the second floating module 5. Thus, the first end stops 33 and second end stops 35 make it possible to identify when the proximity between the first floating module 3 and the second floating module 5 is sufficient, in particular to ensure a sufficient compression of the sealing device 102 inserted between the first floating module 3 and the second floating module 5, so as to assure the tightness of the space 106.
[0096] The mechanical connection step, that is, the connection of the first metal reinforcement to the second metal reinforcement by way of the coupler 34, as well as the connection between the first prestressing sheath and the second prestressing sheath by way of the sleeve 36, is facilitated if the emptying step has been performed previously, in the case when the first floating module 3 and the second floating module 5 are assembled on a body of water.
[0097] One may see in
[0098]
[0099] Thus, once the coupler 34 and the sleeve 36 have been installed, as illustrated in
[0100] It is also noted that the prestressing sheath 24 emerging into the hollow 104 is thus covered by the concrete present in the hollow. Thus, the prestressing cable 25 inserted inside the prestressing sheath 24 extends in the longitudinal axis of the wall of the first floating module 3 and the wall of the second floating module 5, inside said walls, thus allowing the compression force exerted by the traction force applied to the prestressing cable to be centered with respect to the wall of the first floating module 3 and the wall of the second floating module 5, especially as compared to a known configuration in which the prestressing cable extends longitudinally on the external face or on the internal face of the wall of the first floating module and the wall of the second floating module, so that the compression force exerted by the traction force applied to the prestressing cable is off-center.
[0101] Thus, a floating structure 100 having advantageously an extension 14 defining a cavity 18 on each of its walls presents an elevated resistance to the mechanical forces of compression, assured by the concrete poured in each cavity 18, which makes it possible to assure a total mechanical continuity between the first floating module and a second floating module, and to obtain a modular floating structure which behaves like a monolithic structure having the same mechanical strength as the standard section of a floating module. On the other hand, each wall 2 of the first floating module 3 is joined to a wall 2 of the second floating module 5 by a hollow 104 of concrete, traversed by a metal reinforcement 22 and/or a prestressing sheath 24, inside which is located a taut prestressing cable 25, so that the floating structure 100 presents an elevated resistance to the shearing and flexural movement exerted between the first floating module 3 and the second floating module 5, especially due to the motions caused by waves on the body of water where the floating structure 100 is situated.
[0102]
[0103] More particularly,
[0104]
[0105]
[0106] The floating structures illustrated in
[0107] Of course, the invention is not limited to the examples just described, and many arrangements may be added to these examples without leaving the scope of the invention. In particular, the different characteristics, shapes, variants and embodiments of the invention may be associated with one another according to various combinations, as long as they are not incompatible or mutually exclusive. In particular, all of the variants and embodiments described above can be combined with each other.
[0108] The invention, such as has been described here, well achieves the purposes which have been set, and makes it possible to propose a floating module making it possible to assure a total mechanical continuity between the first floating module and a second floating module, and to obtain a modular floating structure which behaves like a monolithic structure having the same mechanical strength as the standard section of a floating module. Variants not described here could be implemented without leaving the scope of the invention, as long as the floating module comprises, in accordance with the invention, an extension emerging from the external face of a wall, the extension extending longitudinally in projection from a longitudinal end of the wall, and the extension and the wall from which the extension emerges being made of integral material. The present invention makes it possible to connect two floating modules made of reinforced and prestressed concrete in the water, so as to ensure a total continuity of the concrete, the reinforcements, and the prestressed steel between the two floating modules joined together and having the same mechanical strength as the standard section of a floating module. It may be utilized to produce a monolithic floating structure of any given shape, made of concrete, and having a modular construction. The connection produced is tight and able to withstand, during the different phases of the lifetime of the project, the static and dynamic forces, the hydrodynamic forces, and the fatigue phenomena which are applicable to it by reason of the international regulations. This invention may be used in the construction of bridges, oil drilling platforms, ports, piers, floating platforms for renewable energy, in the nuclear field and in any other field.