WO2018236217A1 - Dispositif d'absorption de charge et son procédé d'assemblage - Google Patents

Dispositif d'absorption de charge et son procédé d'assemblage Download PDF

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Publication number
WO2018236217A1
WO2018236217A1 PCT/NL2018/050403 NL2018050403W WO2018236217A1 WO 2018236217 A1 WO2018236217 A1 WO 2018236217A1 NL 2018050403 W NL2018050403 W NL 2018050403W WO 2018236217 A1 WO2018236217 A1 WO 2018236217A1
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WO
WIPO (PCT)
Prior art keywords
modules
load absorbing
absorbing material
mounting
layer
Prior art date
Application number
PCT/NL2018/050403
Other languages
English (en)
Inventor
Kirill Gennadjevich KAVELIN
Martina CUSCHIERI
Sven HENDRICKS
Original Assignee
Bluemarine Offshore Yard Service B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bluemarine Offshore Yard Service B.V. filed Critical Bluemarine Offshore Yard Service B.V.
Publication of WO2018236217A1 publication Critical patent/WO2018236217A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • E02B17/024—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform shock absorbing means for the supporting construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure

Definitions

  • the present invention relates to a device that is to be arranged between a construction and a support or between the construction and lifting equipment for absorbing impact loads associated with lifting the construction on or from the support, in particular in an offshore environment.
  • the present invention also relates to a method of assembling a device according to the invention.
  • load absorbing units for absorbing impact loads associated with lifting a construction on or from a support.
  • LMU leg mating unit
  • the leg mating unit is engaged by a mating construction of the topside when the topside is lifted onto the jacket.
  • the leg mating unit is designed to absorb impact loads to which the leg mating unit and the mating construction of the topside are subjected when lifting the topside onto the jacket, e.g. impact forces.
  • a leg mating unit For absorbing such loads, a leg mating unit is generally provided with a plurality of stacked layers of load absorbing material that are arranged between two housing parts, wherein one of the housing parts is attached to a jacket leg at the top end thereof and the other end is provided with a mating member that is engaged by a mating construction of the topside when the topside is placed onto the jacket.
  • the weight of the topside causes the housing parts of the leg mating unit to move toward each other and the plurality of stacked layers of load absorbing material to compress. While transferring the weight of the topside to the leg mating unit, impact loads, for instance as a result of oscillating motion of a lifting vessel that lifts the offshore platform onto an offshore jacket, are absorbed by the load absorbing material.
  • the plurality of stacked layers of load absorbing material provide the leg mating unit with a certain stiffness, that is determined by the displacement-force relationship, i.e. the relationship between the displacement of the housing parts relative to each other and the force associated with the load that causes that displacement.
  • the stiffness of a leg mating unit must be such that during the mating of the mating member of the leg mating unit and the mating construction of the topside and during the process of transferring the weight of the topside from the lifting equipment to the jacket, loads associated therewith, such as impact forces, are absorbed. Furthermore, the stiffness of a leg mating unit must be such that once the weight of the topside is fully transferred to the jacket, the displacement of the housing parts of the leg mating unit is such that parts of the jacket leg and the topside that will be connected to each other in order to connect the topside to the jacket are in a certain desired position relative to each other to allow connection.
  • a jacket For a typical jacket based offshore platforms, a jacket has four or more jacket legs. Due to difference in the weight distribution of the topside and resulting difference in distribution of the weight that is to be supported by each jacket leg, each leg mating unit requires a different stiffness to meet the requirements for absorbing the loads associated with lifting the topside onto the specific jacket leg, as described herein above.
  • WO-96/18772 GB-2276697, US-4655641 , WO-2014/160242 and US-5101905.
  • a plurality of modules with load absorbing material is arranged in a mounting arrangement to full capacity of the mounting arrangement in terms of a number of the plurality of modules.
  • mutually essentially identical modules are provided in a layer in different orientations in the layer, to achieve resistance to shear loading in all directions parallel to the orientation of the layer.
  • the present inventions has among others for its object to provide an improved load absorbing device that may be used in leg mating units to address the above mentioned drawbacks of the custom designing and manufacturing of leg mating units, but that also may advantageously be used in other load absorbing units that are used in offshore environments for absorbing impact loads associated with lifting the construction on or from the support.
  • present invention provides a device that is to be arranged between a construction and a support or between the construction and lifting equipment for absorbing impact or other loads associated with lifting the construction on or from the support, wherein the device comprises a stack of at least one layer , comprising a plurality of coplanar modules with load absorbing material, wherein the modules are essentially identical and are mounted in or on a mounting arrangement.
  • the present disclosure is distinguished in that a selectable number from the plurality of modules is arranged in the layer to adapt a property, such as stiffness, of the layer, and the selected number from the plurality of modules is adaptably distributed over the mounting arrangement.
  • a layer of load absorbing material is provided by a number from the plurality of coplanar modules comprising load absorbing material.
  • Providing a layer of load absorbing material by a plurality of coplanar modules allows for adapting or changing the load absorbing properties, such as the stiffness, of the layer of load absorbing material by adapting / changing the number of coplanar modules, to less than full capacity in terms of the numbers of modules that can be accommodated by a mounting arrangement. Enabling a desired distribution of the modules over the mounting arrangement allows for changing the positional relationship of the coplanar modules relative to each other, when adapting numbers of modules, and avoiding relatively stiffer or weaker parts or zones of the layers.
  • an uneven distribution of the modules over the mounting arrangement is also possible, though. This allows for assembling a custom layer of load absorbing material from a plurality of standard modules, which is far less complex than custom manufacturing of the layer load absorbing material as a whole.
  • the load absorbing properties, such as the stiffness, of the layer of load absorbing material may be adapted / changed relatively easily by adding or removing one or more modules of load absorbing material and/or by rearranging the modules, thereby allowing for fast and relatively cheap stiffness adjustments, while maintain a length or height of the device in terms of a number of layers in the stack, which is a strict design constraint as the device is designed to be installed in for instance a leg of the jacket, as discusses above, in and for which a determined length or height of the stacked layer device is available.
  • the device according to the invention comprises a plurality of stacked layers of load absorbing material wherein each of a plurality of layers is provided by a plurality of coplanar modules, it is possible to assemble a stack of layers of load absorbing material with a wide range of load absorbing properties, such as the stiffness, out of standard modules that are each the same.
  • a device according to the invention in a leg mating unit allows for adjusting load absorbing properties of the leg mating unit, in particular the stiffness, over a wide range at any stage of the design and manufacturing process by reconfiguring the modules in each layer of the load absorbing device. Furthermore, since in the device according to the invention a layer of load absorbing material is provided by a plurality of modules of load absorbing material, relatively small adjustments of the load absorbing properties can be made, for instance by removing or adding a single module. This allows for more accurate matching of the load absorbing properties of the leg mating unit, such as stiffness, to the calculated required load absorbing properties and for lower required manufacturing tolerances for the individual modules.
  • the load absorbing material is elastomeric material.
  • Elastomeric materials that are suitable for the present invention include, but are not limited to, rubber, elastomeric polyurethane, thermoplastic polyurethane, and silicone.
  • the device comprises a mounting arrangement for mounting the modules in coplanar relationship for providing the layer of load absorbing material.
  • the mounting arrangement is configured for mounting the modules in a plurality of different positions relative to each other for providing the layer of load absorbing material. This allows for even distribution of the modules over the available mounting area.
  • the mounting arrangement is configured for mounting adjacent co-planar modules in both abutting relationship and interspaced relationship.
  • the modules are configured such that in abutting relationship the load absorbing materials of adjacent co-planar modules are in contact at least when the modules are in load absorbing state.
  • sideway expansion of the load absorbing material of a module along the side where the load absorbing material is in contact with the load absorbing material of the abutting module is restricted, whereas in interspaced relationship sideway expansion of the load absorbing material of adjacent module along adjacent sides is unrestricted.
  • modules of different dimensions may be used to adjust overall stiffness of the device. Using modules with a different height for one or more of the layers of load absorbing material may result in a different overall height of the layers and/or a different number of co-planar stacked layers of load absorbing material.
  • the mounting arrangement is configured for mounting the modules in a plurality of different number of modules, wherein for each number of modules the modules the mounting arrangement allows for even distribution of the modules or for even distribution of groups of the modules over the available mounting area.
  • the mounting arrangement comprises a mounting plate that is provided with mounts for mounting the modules on the mounting plate in coplanar relationship for providing the layer of load absorbing material.
  • the mounting plate has a doughnut shape or circle shape and the modules each have the shape of a sector of the doughnut shape or circle shape.
  • the mounting arrangement is configured to mount modules on opposite sides of the mounting plate.
  • the mounts are provided by holes in a pattern that defines mounting positions of the modules.
  • other mounts may be provided on the mounting plate, such as mounting cavities and/or mounting protrusions.
  • clamps may be provided on the on the mounting plate for clamping the modules onto the mounting plate.
  • each module comprises two plates between which the load absorbing material is arranged.
  • the plates of the modules in combination with the mounting arrangement comprising a mounting plate that is provided with a hole pattern, are provided with holes that are configured to be aligned with the holes in the mounting plate such that a bolt can be arranged through the aligned holes in order to fix the module onto the mounting plate.
  • the present invention further provides a kit of parts for assembling a device according to the invention as described herein above, wherein the kit of parts comprises a plurality of modules comprising load absorbing material, and a mounting arrangement for mounting the modules in coplanar relationship for providing a layer of load absorbing material.
  • the mounting arrangement is configured for providing a plurality of stacked layers of load absorbing material, wherein the mounting arrangement allows for at least one of the layers of load absorbing material to be provided by mounting the modules in coplanar relationship.
  • the modules of the kit of parts are preferably of the same load absorbing material .
  • the modules of the kit of parts are preferably identical.
  • the modules of the kit of parts being of the same load absorbing material or even being identical, reduces complexity of the kit of parts and reduces manufacturing costs and costs of storage of unused modules.
  • the kit of parts includes modules of different sizes and/or load absorbing properties, that can be arranged in coplanar relationship in order to provide a layer of load absorbing material.
  • the kit of parts includes modules of different sizes and/or load absorbing properties increases the number of different configurations of modules and thus increases the number of different devices that can be assembled with the kit of parts.
  • the present invention further provides a leg mating unit to be arranged between a jacket leg of an offshore jacket and an offshore construction, such as a topside of an offshore platform, for absorbing loads associated with lifting the offshore construction on the offshore jacket, comprising a telescopic housing having arranged therein a load absorbing device according to the invention as described herein above.
  • the telescopic housing comprises two telescopically ranged housing parts. One of the housing parts is configured to be arranged in or on one of the jacket legs and the offshore construction. The other housing part is configured to be engaged by the other of the jacket leg and the offshore construction when lifting the offshore construction on the offshore jacket such that when the offshore construction is lifted on the jacket leg the housing parts are moved toward each other.
  • the device is arranged between the housing parts such that the layer or the plurality of stacked layers of load absorbing material is compressed when the housing parts are moved toward each other.
  • the device is preferably arranged between the housing parts such that the housing parts provide support to the stacked layers of load absorbing material for preventing the stack from buckling.
  • the present invention further provides a passive heave compensator to be arranged between an offshore construction and offshore lifting equipment for absorbing impact loads associated with heave motion of at least one of the offshore construction and the offshore lifting equipment while lifting the construction on or from a support, comprising a telescopic housing having arranged therein a load absorbing device according to the invention as described herein above.
  • the telescopic housing comprises two telescopically ranged housing parts, wherein one of the housing parts is configured to be connected to one of the offshore construction and the offshore lifting equipment and the other housing part is configured to be connected to the other of the offshore construction and the offshore lifting equipment, such that when lifting the offshore construction by means of the offshore lifting equipment, the housing parts are moved away from each other, and the device is arranged between the housing parts such that the layer or the plurality of stacked layers of load absorbing material is compressed when the housing parts are moved away from each other.
  • the present invention further provides a method of assembling a device that is to be arranged between a construction and a support or between the construction and lifting equipment for absorbing loads associated with lifting the construction on or from the support, preferably a device according the invention described herein above, in which method a layer or a plurality of stacked layers of load absorbing material is provided, wherein at least one of the layers of load absorbing material is assembled by arranging in coplanar arrangement a plurality of modules comprising load absorbing material.
  • arranging the chosen modules in coplanar arrangement comprises mounting the chosen modules onto a mounting support, wherein the chosen modules or groups of chosen modules are evenly distributed over the mounting support.
  • Figure 1 is a schematic side view of a topside of an offshore platform that is being placed onto an offshore jacket for supporting the topside on the seabed;
  • Figure 2 is a schematic perspective view of an embodiment of a leg mating unit according to the invention that is arranged in a jacket leg of the jacket shown in figure 1 in which view internal components of the leg mating unit, including an embodiment of a load absorbing device according to the invention, are schematically shown with dashed lines ;
  • Figure 3 is a longitudinal sectional view in perspective of the leg mating unit of figure 2;
  • Figure 4 is a perspective view of the embodiment of the load absorbing device according to the invention shown in figures 2 and 3 including a plurality of stacked layers of load absorbing material;
  • Figure 5 is a perspective view of an assembly providing one of the layers of load absorbing material of the load absorbing device of figure 4, which assembly includes a plurality of coplanar modules;
  • Figure 6 is a perspective view of the assembly of figure 5 with two of the modules taken out of the assembly, one of which is shown in exploded view;
  • Figure 8 is a top view of the assembly of figure 5 showing the arrangement of modules in a first configuration
  • Figures 9 to 13 are a top view of alternatives of the assembly of figure 5 each showing modules arranged in a different configuration
  • Figure 14 is a longitudinal sectional view of a passive heave compensator according to the invention in which view internal components of the passive heave compensator are shown , including an embodiment of a load absorbing device according to the invention having a plurality of stacked layers of load absorbing material;
  • Figure 15 is a side view of the plurality of stacked layers of load absorbing material of figure 14 before being under load;
  • Figure 16 is a side view of the plurality of stacked layers of load absorbing material of figure 14 while being under load.
  • FIG 1 a topside 1 of an offshore platform is shown while being lifted onto an offshore jacket 3 for supporting the topside 1 on the seabed 5.
  • the topside 1 is lifted onto the jacket 3 by means of lifting equipment embodied by lifting arms 7 that are mounted on a vessel 9.
  • lifting equipment embodied by lifting arms 7 that are mounted on a vessel 9.
  • the topside 1 is lowered in the direction of arrow A until the topside 1 is fully supported by the jacket 3.
  • each of the legs 1 la-c a respective mating cone 13a, 13b, 13c, is shown that is part of a mating construction 15 of the topside 1.
  • the cones 13a- 13c will engage a leg mating unit 17 that is mounted inside each of the jacket legs l la-c.
  • Each leg mating unit 17 is configured to absorb loads that are associated with lifting the topside 1 onto the jacket 3.
  • each leg mating unit is specifically configured to absorb loads that are associated with lifting the topside 1 onto the particular jacket leg 1 la-c.
  • the loads associated with lifting the topside 1 onto the jacket 3 is generally different at each jacket leg 1 la-c as a result of the uneven distribution of the weight of the topside 1 over the jacket legs 1 l a-c.
  • an embodiment of the leg mating unit 17 is shown arranged in the upper end 19 of jacket leg 11. Furthermore, a part of the mating construction 15 of the topside 1 is shown, in particular the part that includes cone 13.
  • the leg mating unit 17 is arranged in an internal space 19 at the upper end of the jacket leg 1 1.
  • the bottom of the internal space 19 is formed by an inwardly extending flange 20 of the hollow jacket leg 3. while the top of the internal space 19 is open.
  • the leg mating unit 17 is arranged in the internal space 19.
  • the leg mating unit 17 is shown having a telescopic housing 21 having arranged therein a load absorbing device 23.
  • the telescopic housing 21 comprises two telescopically arranged housing parts 25 and 27.
  • the lower housing part 25 is an assembly comprising a canister 29.
  • the load absorbing elements 31 for absorbing loads in horizontal loads are arranged on the outer surface of the canister 29 and are in contact with the inner surface 33 of the hollow jacket leg 3.
  • the adjustable shim 35 is attached to the flanged lower end of the canister and is in contact with the inwardly extending flange 21 of the hollow jacket leg 1 1.
  • the canister 29 has an internal space 37 that has an open upper end 37a and a closed lower end 37b.
  • the upper housing part 27 is telescopically received in the internal space 37 of the canister 29 of the lower housing part 25.
  • the upper housing part 27 has an internal space 39 that has an open lower end 39a at the lower end 27a of the upper housing part 27 and that has an upper end 39b that is closed by means of a inwardly extending flange 41.
  • the upper housing part 27 has a receiving cone 42 that is configured to receive the cone 13 of the mating construction 15 of the topside 1.
  • the load absorbing device 23 is arranged in the inner space 39 of the upper housing part 27.
  • the load absorbing device 23 bears at its upper end 23a against the inwardly extending flange 41 of the upper housing part 27 and bears at its lower end 23b against the closed lower end 37b of the internals pace 37 of the canister 29 of the lower housing part 25.
  • the load absorbing device 23 has a plurality of stacked layers 45 of load absorbing material. Moving the telescopically arranged upper housing part 25 and lower housing part 27 toward each other in the direction of arrows B causes the plurality of stacked layers 45 of load absorbing material to be compressed. In figure 4 the load absorbing device 23 is shown.
  • the load absorbing device 43 has a plurality of stacked layers 45 of load absorbing material. Each layer 45 is provided by an assembly 47 as shown in figures 5 and 6.
  • the layer 45 of load absorbing material is provided by a plurality of coplanar modules 49.
  • Each module 49 comprises a block 51 of load absorbing material that is arranged between two plates 53, 55.
  • the block 51 of load absorbing material is fixed to each of the two plates 53, 55 by means of an adhesive.
  • the modules 49 have the shape of a sector of a doughnut-shape.
  • the modules 49 are mounted on a doughnut shaped mounting plate 57.
  • the mounting plate 57 is provided with holes 59.
  • the plates 53, 55 of the modules 49 are provided with holes 61 , 63 that are configured to be aligned with the holes 59 in the mounting plate 55 such that a bolt 65 can be arranged through the aligned holes 59, 61 in order to fix the lower plate 53 of the modules onto the mounting plate 57.
  • the holes 59 in the mounting plate 57 allow for the bolts 65 to extend through the mounting plate 57. This allows to mount a module 49 against the underside of the mounting plate 57.
  • a module 49 can be arranged with its upper plate 55 against the underside of the mounting plate 57, with the holes 63 in the upper plate 55 positioned such that the holes 63 are aligned with holes 59 in the mounting plate 57.
  • a single bolts 65 can extend through a hole 63 in the upper plate 55 of a module 49 arranged against the underside of the mounting plate 57, through the hole 59 in the mounting plate 57, and through the hole 61 in the lower plate 53 of a module 49 that is arranged against the topside of the mounting plate 57, for mounting the two modules 49 on opposite sides of the mounting plate 57.
  • a second layer of load absorbing material can be provided on top of the layer 45 in order to provide a plurality of stacked layers of load absorbing material.
  • second layer can be provided by arranging a second mounting plate, that corresponds to the first mounting plate 57, on top of the modules 49 of the first layer 45 such that the underside of the second mounting plate is arranged on the upper plates 55 of the modules 49 of the first layer 45, and such that holes 59 in the second mounting plate are aligned with holes 63 in the upper plate 55 of the modules 49.
  • additional modules 49 can be arranged on the topside of the second mounting plate for providing the second layer of load absorbing material.
  • the lower plate 53 of the additional modules 49 are positioned against the topside of the second mounting plate with holes 61 in the lower plate 53 of the additional modules 49 aligned with holes 59 in the second mounting plate. Subsequently, bolts 65 can be arranged through each set of aligned holes of the modules 49 of the first layer 45, of the second mounting plate 57, and of the additional modules 49 of the second layer of load absorbing material, for fastening the modules 49 that provide the first layer 45 and the additional modules 49 that provide the second layer, to the second mounting plate 57.
  • the thus provided stack of two layers of load absorbing material can be expanded by providing further layers of load absorbing material on top of the stack, wherein each further layer can be provided on top of a previous provided layer by performing the same steps as described herein above for providing the second layer of load absorbing material on top of the first layer 45 of load absorbing material.
  • a plurality of stacked layers of load absorbing material can be provided such as shown in figure 4.
  • the layer 45 of load absorbing material as shown in figure 5 can be assembled.
  • the modules 49 that provide the layer 45 of load absorbing material are arranged such that each module 49 is in contact with an adjacent module 49 on either side thereof.
  • the modules 49 thus cover the total mounting area provided by the mounting plate 57.
  • the load absorbing material of each modules 49 is in contact with the load absorbing material of the adjacent modules 49.
  • figure 7 that shows a top view on the assembly shown in figure 6, the tangential direction of expansion of the load absorbing material of a module 49 is indicated with arrows C.
  • the radial direction of expansion of the load absorbing material of a module 49 is indicated with arrows D.
  • each module 49 of the kit of parts shown in figure 6 are mounted on the mounting plate 57.
  • the modules 49 are arranged in two spaced apart groups 75, 77 of five modules 49, wherein within each group of modules adjacent modules 49 are in contact with each other.
  • the groups 75, 77 do not completely cover the total available mounting area provided by the mounting plate 57 and are arranged evenly distributed over the total available mounting area.
  • the load absorbing material of each module 49 is in contact with the load absorbing material of each adjacent module 49. Under compression, the load absorbing material of the respective modules 49 of each group 75, 77 thus act as a unit.
  • each group Under compression the load absorbing material of each group can expand along the free sides of the group of modules in radial direction D along the arc shaped sides of the group 75, 77 of modules and in tangential direction D along the free sides of the outer modules 49 of the group 75, 77 of modules 49.
  • the arrangement shown in figure 9 corresponds to the arrangement shown in figure 8, albeit that eight of the modules 49 of the kit of parts shown in figure 6 are mounted on the mounting plate 57 instead of ten.
  • the modules 49 are arranged in two spaced apart groups 79, 81 of four modules 49, wherein within each group of modules adjacent modules 49 are in contact with each other.
  • nine of the modules 49 of the kit of parts shown in figure 6 are mounted on the mounting plate 57.
  • the modules 49 are arranged in three spaced apart groups 83, 85, 87 of three modules 49, wherein within each group of modules adjacent modules 49 are in contact with each other.
  • the groups 83, 85, 87 do not completely cover the total available mounting area provided by the mounting plate 57 and are arranged evenly distributed over the total available mounting area.
  • each group 83, 85, 87 the load absorbing material of each module 49 is in contact with the load absorbing material of each adjacent module 49. Under compression, the load absorbing material of the respective modules 49 of each group 83, 85, 87 thus act as a unit. Under compression the load absorbing material of each group can expand along the free sides of the group of modules in radial direction C along the arc shaped sides of the group 83, 85, 87 of modules and in tangential direction D along the free sides of the outer modules 49 of the group 83, 85, 87 of modules 49.
  • the arrangement shown in figure 11 corresponds to the arrangement shown in figure 10, albeit that six of the modules 49 of the kit of parts shown in figure 6 are mounted on the mounting plate 57 in stead of nine.
  • the modules 49 are arranged in three spaced apart groups 89, 91 , 93 of two modules 49, wherein within each group of modules adjacent modules 49 are in contact with each other.
  • the arrangement shown in figure 12 corresponds to the arrangement shown in figure 1 1 , albeit that the six modules 49 are not arranged in groups, but in space apart individual relationship. Under compression, the load absorbing material of the respective modules 49 can expand along the free sides of the module 49 in radial direction C along the arc shaped sides of the module 49 and in tangential direction D along the straight sides of the module 49.
  • each of the arrangements shown in figures 7 to 12 the modules 49 are the same, the load absorbing behaviour of each of the arrangements is different as a result of the different number of mounted modules 49 and/or different arrangement of the mounted modules 49 relative to each other.
  • a plurality of differently behaving layers 45 of load absorbing material can be assembled.
  • the number of modules 49 and the arrangement of modules 49 to be mounted on the mounting plate 57 in order to provide a layer 45 of load absorbing material can be chosen based on a determined load to be absorbed by the layer 45 during use thereof.
  • each layer 45 can be assembled with a kit of parts as shown in figure 6.
  • the number of modules 49 to be mounted on the mounting plate 57 and the arrangement thereof on the mounting plate 57 can be chosen based on a determined load to be absorbed by the layer 45 during use thereof.
  • the number of modules 49 and the arrangement preferably but not necessarily is kept the same over all layers in the stack.
  • the determined load to be absorbed by the layer 45 during use thereof is a derivative of a determined load to be absorbed by the stack of layers 45 of load absorbing material.
  • Each of the leg mating units 17a-c arranged in the jacket legs 1 1a, l ib, 1 lc of the jacket 3 shown in figure 1 will while lifting the topside 1 onto the jacket 3, be subjected to different loads depending on the weight distribution of the topside 1. Furthermore, the load on each of the leg mating units 17a-e may be subjected to different loads depending on the position of the associated mating cone 13a, 13b, 13c, relative to the lifting arms 7.
  • each leg mating unit 1 la, 1 lb, 1 lc can be assembled from a kit of parts having the same components as shown in figure 6, wherein each leg mating unit 1 1a, l ib, 1 1c can have its specific load absorbing behavior depending on the chosen number and arrangement of modules 49 for each of the layers 45 of load absorbing material that together provide the plurality of stacked layers of load absorbing material shown in figure 4.
  • a passive heave compensator 100 is shown having a telescopic housing 101 having arranged therein a load absorbing device 103.
  • the telescopic housing 101 comprises two telescopically arranged housing parts 105 and 107.
  • the upper housing part 105 is attached to a hoisting block 109 of lifting equipment. As shown in figure 13 the hoisting block 109 is provided with two pulleys 1 1 , 113 over which a hoisting cable 1 15 is run.
  • the upper housing part 105 comprises a canister 117.
  • the canister 117 has an internal space 119 that has an open lower end 119a and a closed upper end 119b.
  • the load absorbing device 103 is arranged that is at its lower end supported by the flange 121.
  • the load absorbing device 103 corresponds to the load absorbing device 23 shown in figure 4, albeit that it is shown having two stacked layers 123 of load absorbing material in stead of more than two.
  • the lower housing part 107 is telescopically received in the internal space 1 19 of the canister 117 of the upper housing part 105.
  • the lower housing part 107 has a puck-shaped base 125 that is arranged on top of the top layer 123 of load absorbing material of the load absorbing device 103.
  • a rod 127 extends from the base 125 through the centre of the load absorbing device 103 and out of the internal space 1 19 of the canister 1 17 of the upper housing part 105.
  • the rod 127 of the lower housing part has arranged thereon a hook 129 that may be attached to an offshore structure to be lifted.
  • the load absorbing device 103 is thus arranged between the upper housing part 105 and the lower housing part 107.

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  • Vibration Prevention Devices (AREA)

Abstract

La présente invention concerne un dispositif qui est destiné à être disposé entre une construction et un support ou entre la construction et un équipement de levage pour absorber des charges d'impact associées au levage de la construction sur ou à partir du support, en particulier dans un environnement en mer. Le dispositif selon l'invention comprend un empilement d'au moins une couche, comprenant une pluralité de modules coplanaires avec un matériau d'absorption de charge, les modules étant sensiblement identiques et étant montés dans ou sur un agencement de montage, un nombre pouvant être sélectionné parmi la pluralité de modules étant agencé dans la ou les couches pour adapter une propriété, telle que la rigidité, de la ou des couches, et le nombre sélectionné parmi la pluralité de modules étant réparti de manière adaptative sur l'agencement de montage. La présente invention concerne également un procédé d'assemblage d'un dispositif selon la présente invention.
PCT/NL2018/050403 2017-06-22 2018-06-22 Dispositif d'absorption de charge et son procédé d'assemblage WO2018236217A1 (fr)

Applications Claiming Priority (2)

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NL2019110 2017-06-22
NL2019110A NL2019110B1 (en) 2017-06-22 2017-06-22 Load absorbing device and method of assembly thereof

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WO2018236217A1 true WO2018236217A1 (fr) 2018-12-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133261A1 (de) * 2018-12-20 2020-06-25 Tractebel Overdick GmbH Offshore-Plattform mit wenigstens einem Stützbein und ein Verfahren zu ihrer Gründung
CN112115585A (zh) * 2020-08-25 2020-12-22 蓝箭航天空间科技股份有限公司 一种运载火箭管路补偿器刚度阵计算方法

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US4655641A (en) 1985-10-18 1987-04-07 Exxon Production Research Co. Apparatus for aligning a platform deck and jacket
US5101905A (en) 1991-02-26 1992-04-07 Ltv Energy Products Company Riser tensioner system for use on offshore platforms
GB2276697A (en) 1993-03-05 1994-10-05 Westinghouse Electric Corp Elastomeric passive tensioner for oil well risers
WO1996018772A2 (fr) 1994-12-16 1996-06-20 Northrop Grumman Corporation Construction de plateformes marines: methode et systeme de transfert des charges
WO2014160242A1 (fr) 2013-03-14 2014-10-02 Lord Corporation Supports renforcés par un tissu et procédés

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655641A (en) 1985-10-18 1987-04-07 Exxon Production Research Co. Apparatus for aligning a platform deck and jacket
US5101905A (en) 1991-02-26 1992-04-07 Ltv Energy Products Company Riser tensioner system for use on offshore platforms
GB2276697A (en) 1993-03-05 1994-10-05 Westinghouse Electric Corp Elastomeric passive tensioner for oil well risers
WO1996018772A2 (fr) 1994-12-16 1996-06-20 Northrop Grumman Corporation Construction de plateformes marines: methode et systeme de transfert des charges
WO2014160242A1 (fr) 2013-03-14 2014-10-02 Lord Corporation Supports renforcés par un tissu et procédés

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133261A1 (de) * 2018-12-20 2020-06-25 Tractebel Overdick GmbH Offshore-Plattform mit wenigstens einem Stützbein und ein Verfahren zu ihrer Gründung
CN112115585A (zh) * 2020-08-25 2020-12-22 蓝箭航天空间科技股份有限公司 一种运载火箭管路补偿器刚度阵计算方法
CN112115585B (zh) * 2020-08-25 2021-07-23 蓝箭航天空间科技股份有限公司 一种运载火箭管路补偿器刚度阵计算方法

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