Offshore assembly type floating platform and assembly construction method thereof

Abstract

The invention provides an offshore assembly type floating platform and an assembly construction method thereof, and is applied to the technical field of floating platforms. The floating platform comprises a plurality of floating modules which are arranged in an array and can be spliced and first flexible splicing pieces embedded in first splicing cavities; the two adjacent floating modules are each provided with a first splicing mortise which extends in the longitudinal direction, at least the upper ends of the first splicing mortises are through, the first splicing mortises are constructed to enable the two first splicing mortises to define a first splicing cavity at at least one splicing position, and the section area of the first splicing cavity is gradually reduced from top to bottom; the first splicing module is suitable for being in mortise and tenon connection with the first splicing mortise; a limiting device is arranged between every two adjacent first splicing modules, the first splicing module at the top end is provided with a locking device used for locking the first flexible splicing pieces to be in a contraction state, the floating platform is easy to assemble and construct and good in maintainability, and the splicing operation quality can be improved by adopting the assembling construction method.

Description

Technical Field

[0001] The present application relates to the technical field of floating platforms, and in particular to an offshore assembled floating platform and an assembly construction method thereof. Background Art

[0002] Traditional floating platforms usually adopt a fixed structural design, which makes it impossible to flexibly adjust the size and function of the platform according to project requirements in actual applications. This design mode not only increases the cost of construction and maintenance, but also limits the applicability of the platform in different marine environments. In addition, the construction of traditional platforms will also lead to waste of resources and affect the construction progress. Therefore, how to develop an assembled floating platform and flexibly assemble different numbers of units according to actual needs through modular design to obtain platforms of different sizes has become an urgent problem to be solved.

[0003] In response to this, a Chinese patent with a publication date of 2022-08-23 and a publication number of CN217260591U proposes an on-water floating platform structure, which is composed of multiple concrete floating modules arranged in an array connected by mortise and tenon joints, and the bottom of each concrete floating module is anchored by a tension cable. When performing the on-water mortise and tenon joint operation, the concrete floating modules to be connected are first transported to the water surface, and the buoyancy is used to make the concrete floating modules to be connected float on the water surface. Combined with the mortise and tenon connection relationship between each concrete floating module, each concrete floating module is towed to the position to be connected, and then the height difference between the two concrete floating modules to be connected is adjusted by the counterweight method until the mortise and tenon structure of one can be connected to the mortise and tenon structure of the other, and the two adjacent concrete floating modules use the bite force between the mortise and tenon structures to achieve relative fixation of the position.

[0004] Although this solution can also realize modular assembly of floating platforms and solve the problems of insufficient adaptability and flexibility of existing floating platforms to a certain extent, during the construction phase of the floating platform, it is necessary to use a counterweight method or a loading method to construct the height difference between the two concrete floating modules before the mortise and tenon connection between the floating modules can be completed, which obviously increases the difficulty of construction. Moreover, the mortise and tenon parts used for mortise and tenon connection are all fixed on the partitions of the floating modules, which makes the maintainability of the mortise and tenon connection structure worse. Precisely because the mortise and tenon connection directions of the mortise and tenon parts on both sides of the floating module are opposite in the longitudinal direction, this means that only the mortise and tenon connection structure on one side can provide support strength for the floating module. Therefore, when the load-bearing capacity is large, the mortise and tenon connection structure on this side will inevitably have a large stress concentration, which is prone to deformation or even failure and fracture. Summary of the invention

[0005] In view of this, the embodiments of the present specification provide an offshore assembled floating platform and an assembly construction method thereof. The floating platform has the advantages of easy assembly and construction and good maintainability, and the construction method has the advantages of being able to improve the quality of splicing operations and construction convenience.

[0006] The embodiments of this specification provide the following technical solutions:

[0007] The embodiment of the present specification first provides an offshore assembled floating platform, comprising: a plurality of spliced ​​floating modules arranged in an array, each of two adjacent floating modules having a first splicing groove extending in the longitudinal direction and penetrating at least the upper end, the first splicing groove being configured to have a taper and to form a first splicing cavity with a cross-sectional area gradually decreasing from top to bottom at at least one splicing position; a first flexible splicing piece embedded in the first splicing cavity, configured to be convertible between an extended state and a contracted state, the first flexible splicing piece comprising a plurality of first splicing modules with a size gradually decreasing from top to bottom and connected in series in sequence, wherein in the extended state, the plurality of first splicing modules are spaced apart in the longitudinal direction. The first splicing module is suitable for being connected with the first splicing mortise and tenon joints; wherein the first splicing cavity is configured to be able to convert the first flexible splicing piece from an extended state to a contracted state while receiving the first flexible splicing piece, and a limiting device is arranged between adjacent first splicing modules, and the limiting device is configured to combine with the cavity wall of the first splicing cavity in response to the first flexible splicing piece being converted from an extended state to a contracted state so as to limit the relative position of the mutually spliced ​​floating modules in the longitudinal direction, and to disengage from the cavity wall of the first splicing cavity in response to the first flexible splicing piece being converted from a contracted state to an extended state, and a locking device for locking the first flexible splicing piece into a contracted state is arranged on the first splicing module at the top.

[0008] In order to optimize the technical solution, the following technical measures are also taken:

[0009] Preferably, the floating module is prefabricated and has an overall regular N-prism shape, wherein N is 3, 4 or 6, the upper end surface of the floating module is used to define the table top of the floating platform, and the first splicing groove is formed on the side of the floating module.

[0010] Preferably, a second splicing groove extending longitudinally and penetrating at least the upper end is formed at the side edge of the floating module, the second splicing groove is constructed to have a taper and at least one splicing position makes a plurality of the second splicing grooves surround a second splicing cavity with a cross-sectional area gradually decreasing from top to bottom; the floating platform also includes a second flexible splicing piece embedded in the second splicing cavity, which is configured to be convertible between an extended state and a contracted state, including a plurality of second splicing modules whose sizes gradually decrease from top to bottom and are connected in series in sequence, wherein in the extended state, the plurality of the second splicing modules are spaced apart in the longitudinal direction, and the second splicing modules are suitable for mortise and tenon connection with the second splicing groove, wherein the second splicing cavity is configured to convert the second flexible splicing piece from an extended state to a contracted state while receiving the second flexible splicing piece, and the second splicing groove is a C-shaped groove.

[0011] Preferably, the first joint groove is a C-shaped groove or a dovetail groove.

[0012] Preferably, the limiting device is detachably mounted on the corresponding first splicing module.

[0013] Preferably, the limiting device includes two first limiting pins relatively arranged inside the lower first splicing module in the transverse direction and a first push rod arranged on the upper first splicing module, the first limiting pins being configured to be movable between an insertion position and a disengagement position, wherein at the insertion position the first limiting pin is inserted into the cavity wall of the first splicing cavity, and at the disengagement position the first limiting pin is disengaged from the cavity wall of the first splicing cavity, the first push rod being configured to move downward in response to the first flexible splicing piece being converted from an extended state to a contracted state and to push the first limiting pin in the lower first splicing module through a wedge mechanism to move it from the disengagement position to the insertion position, the first limiting pin being spring-loaded to always return to the disengagement position when disengaged from the corresponding first push rod.

[0014] Preferably, the locking device includes two second limit pins arranged opposite to each other in the transverse direction inside the first splicing module at the top and a second push rod detachably connected to the first splicing module at the top, the second limit pins being configured to be movable between an insertion position and a disengagement position, wherein at the insertion position the second limit pin is inserted into the cavity wall of the first splicing cavity, and at the disengagement position the second limit pin is disengaged from the cavity wall of the first splicing cavity, the second push rod is detachably coupled to the second limit pin, and the second push rod is configured to be able to apply force to the second limit pin in a direction to keep the second limit pin in the insertion position in a coupled state, and the second limit pin is spring-loaded to always return to the disengagement position when disengaged from the corresponding second push rod.

[0015] Preferably, the second push rod is connected to the first splicing module at the top by threads, and the lower end of the second push rod is combined with the second limiting pin by an inclined wedge mechanism.

[0016] Preferably, the second push rod may also be connected to the first splicing module at the top by magnetic force, and the lower end of the second push rod is coupled to the second limiting latch by an inclined wedge mechanism.

[0017] The embodiment of this specification also provides an assembly construction method of the above-mentioned offshore assembled floating platform, comprising the following steps:

[0018] The outline of the floating platform is formed by: arranging a plurality of the floating modules in an array according to the design requirements and constraining the relative positions of the floating modules so that a first splicing cavity is formed between the first splicing grooves of adjacent floating modules and a second splicing cavity is formed between the second splicing grooves;

[0019] Assembling the first flexible splicing piece, specifically: unlocking the locking device, and installing each of the limiting devices between corresponding adjacent first splicing modules;

[0020] Embedding the first flexible splicing piece, specifically: hanging the first flexible splicing piece in the extended state into the corresponding first splicing cavity, adjusting the posture and position of each first splicing module during the hanging process, so that each first splicing module is respectively embedded at a different depth position in the splicing cavity, ensuring that the first flexible splicing piece enters a contracted state, and at the same time each limit device is combined with the cavity wall of the first splicing cavity, and at this time, the locking device is activated to lock the current state of the first flexible splicing piece;

[0021] Embedding the second flexible splicing piece specifically includes: hanging the second flexible splicing piece in the extended state into the corresponding second splicing cavity, adjusting the posture and position of each second splicing module during the hanging process, so that each second splicing module is respectively embedded at a different depth position in the splicing cavity, ensuring that the second flexible splicing piece enters a contracted state.

[0022] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification include at least:

[0023] First, in the provided floating platform, at least one joint, the present embodiment connects two adjacent floating modules together by means of an additionally provided first flexible splicing piece, and there is no need to use a counterweight method to perform longitudinal alignment of each floating module, and there is no need to directly perform mortise and tenon splicing of adjacent floating modules. The splicing operation of adjacent modules can be completed by embedding the first flexible splicing piece in the first splicing cavity and controlling the locking device to be in a locked state. In this process, thanks to the tapered design of the first splicing cavity and the shape matching of the first flexible splicing piece and the first splicing cavity, not only the first flexible splicing piece is The splicing alignment of the splicing piece and the first splicing cavity becomes very easy, and the first flexible splicing piece can be converted from an extended state to a telescopic state in the first splicing cavity to trigger the limiting device on each floating module to make it combine with the cavity wall of the first splicing cavity to limit the relative position of two adjacent modules in the longitudinal direction. At the same time, since each floating module and the first splicing mortise and tenon groove are connected by mortise and tenon joints, the relative position of two adjacent modules in the transverse direction can also be limited. Compared with directly splicing the floating modules with mortise and tenon joints at sea to limit the relative position of the two, the splicing and assembly process between modules can be greatly simplified and the construction difficulty can be reduced. On the contrary, the operator only needs to release the locking state of the locking device to salvage the first flexible splicing piece from the first splicing cavity for later maintenance.

[0024] Furthermore, in the provided assembly construction method, each floating module array is first arranged and assembled into the outer contour of the floating platform, and at the same time, a constraint member such as a high-strength lashing rope is used to constrain the relative position of each floating module, and then the assembled first flexible splicing piece is embedded in the corresponding first splicing cavity to complete the splicing of adjacent floating modules on the side. At this time, the relative position of each floating module has been limited, and then the second flexible splicing piece is suspended in the corresponding second splicing cavity, so as to complete the splicing of adjacent floating modules in the array at the side edge position, so as to optimize the stress condition of each floating module at the side edge position. Compared with the traditional scheme, this method follows the main idea of ​​first building the overall contour and then performing node splicing, which can effectively avoid the contour deformation caused by splicing misalignment. And under this main idea, the splicing order of the first flexible splicing piece and the second flexible splicing piece can be reasonably arranged. On the premise that the splicing operation of the first flexible splicing piece has been completed, the relative position of each floating module has been basically limited, so that the floating platform at this time can be used as a supporting foundation, thereby facilitating the splicing operation of the second flexible splicing piece, greatly improving the convenience and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a schematic diagram of the splicing structure of the floating platform in the first embodiment;

[0027] Figure 2 is a cross-sectional schematic diagram of the first flexible splicing member in the first embodiment when it is in an extended state;

[0028] Figure 3 is a cross-sectional schematic diagram of the first flexible splicing member in the first embodiment when it is in a contracted state;

[0029] Figure 4 It is a schematic diagram of the coordination of the limit device and its related parts in the first embodiment;

[0030] Figure 5 It is a schematic diagram of the cooperation of the locking device and its related parts in the first embodiment;

[0031] Figure 6 is a schematic structural diagram of the first flexible splicing piece in the first embodiment;

[0032] Figure 7 is a schematic structural diagram of the second flexible splicing member in the second embodiment;

[0033] Figure 8 is a schematic diagram of the installation structure of the limiting device in the first embodiment;

[0034] Fig. 9 It is a schematic diagram of the splicing structure of the regular triangular prism-shaped floating module in the second embodiment;

[0035] Fig.10 is a schematic diagram of the splicing structure of the regular quadrangular prism-shaped floating modules in the second embodiment;

[0036] Fig.11 It is a flow chart of the floating platform assembly construction method in the third embodiment.

[0037] Reference numerals

[0038] 100. Floating platform; 1. Floating module; 2. First splicing mortise and tenon; 21. First plug-in recess; 22. Second plug-in recess; 3. First flexible splicing piece; 31. First splicing module; 311. Matching slope; 312. Mounting groove; 313. Embedding portion; 32. Limiting device; 321. First positioning sleeve; 322. First limiting latch; 323. First spring; 33. First push rod; 34. Locking device; 341. Second positioning sleeve; 342. Second limiting latch; 343. Second spring; 35. Second push rod; 36. First chain; 4. Second splicing mortise and tenon; 5. Second flexible splicing piece; 51. Second splicing module; 52. Second chain. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0040] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0041] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0042] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0043] The embodiments of this specification propose an offshore assembled floating platform and an assembly construction method thereof, aiming to solve the problems of difficult construction of module splicing operations and poor maintainability of existing modular assembled floating platforms. It can not only reduce the difficulty of splicing operations between floating modules and improve construction efficiency, but also improve the structural strength and support stability of the entire floating platform after assembly.

[0044] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0045] Embodiment 1

[0046] like Figures 1 to 3 As shown, this embodiment first proposes an offshore assembled floating platform 100, including a plurality of connectable floating modules 1 arranged in an array. Here, the connectable floating modules 1 refer to modular units that can be connected to form a temporary or permanent floating platform 100, wherein the connection can be threaded connection, magnetic connection, mortise and tenon connection, etc. The floating module 1 can be a hollow structure, such as a buoy structure with a hollow inner cavity, or a solid structure, which is not limited here. Figure 1 The situation when the floating platform 100 is composed of regular hexagonal prism-shaped splicable floating modules 1 is shown, wherein two adjacent floating modules 1 are respectively provided with a first splicing groove 2 extending in the longitudinal direction and penetrating at least at the upper end, wherein the first splicing groove is preferably arranged to penetrate at both the upper and lower ends, so as to disperse the load on the splicing point and reduce stress concentration. The first splicing groove 2 is constructed so that the bottom surface gradually tilts outward from top to bottom, thereby forming a first splicing cavity with a gradually reduced cross-sectional area from top to bottom between the two first splicing grooves 2 at the splicing point, wherein the "outward" mentioned here is defined as the side away from the center of the floating module 1 in the horizontal direction, and for the first splicing groove 2, it can also be defined as the side facing the side notch of the splicing groove in the horizontal direction.

[0047] In this embodiment, the floating platform 100 further includes a first flexible splicing member 3 embedded in the first splicing cavity, which is configured to be switchable between an extended state and a contracted state. The first flexible splicing member 3 includes a plurality of first splicing modules 31 whose sizes gradually decrease from top to bottom and are sequentially connected in series by ropes, cables or chains, such as Figures 4 to 6As shown, here, a plurality of first splicing modules 31 are connected in series through a first chain 36. In the extended state, the plurality of first splicing modules 31 are spaced apart in the longitudinal direction. Preferably, the plurality of first splicing modules 31 are equally spaced apart in the longitudinal direction. The first splicing modules 31 are suitable for mortise and tenon connection with the first splicing mortise and tenon groove 2, and the outer dimensions of the first splicing modules 31 are adapted to the first splicing cavity. The first splicing cavity is configured to be able to convert the first flexible splicing piece 3 from an extended state to a contracted state while receiving the first flexible splicing piece 3. A limiting device 32 is provided between adjacent first splicing modules 31. The limiting device 32 is configured to combine with the cavity wall of the first splicing cavity in response to the first flexible splicing piece 3 being converted from an extended state to a contracted state, thereby limiting the relative position of the mutually spliced ​​floating modules 1 in the longitudinal direction, and to separate from the cavity wall of the first splicing cavity in response to the first flexible splicing piece 3 being converted from a contracted state to an extended state. A locking device 34 for locking the first flexible splicing piece 3 into a contracted state is provided on the top of the first splicing module 31.

[0048] In this embodiment, the two first splicing grooves 2 at the splicing position form a first splicing cavity with a tapered section area that gradually decreases from top to bottom, and the multiple first splicing modules 31 embedded therein are quickly layered and positioned in the longitudinal direction by means of inclined support, so that splicing nodes can be formed at different depths between adjacent floating modules 1, so as to disperse the load on the splicing position in the longitudinal direction, thereby improving the overall rigidity of the floating platform 100 after assembly. At each splicing node, since the first splicing module 31 is connected to the corresponding first splicing groove 2 by mortise and tenon joints, the relative positions of the two adjacent modules in the horizontal direction can be limited, and at the same time, the first splicing module 31 can be connected to the corresponding first splicing groove 2 by mortise and tenon joints. The first flexible splicing piece 3 is converted from the extended state to the contracted state, so that the limiting device 32 thereon is combined with the cavity wall of the first splicing cavity to limit the relative position of the two adjacent modules in the vertical direction, that is, in the longitudinal direction. At this time, the locking device 34 on the top first splicing module 31 is used to lock the current state of the first flexible splicing piece 3, that is, the contracted state, to achieve complete limiting of the two adjacent floating modules 1, that is, complete the splicing of the two adjacent modules. Since the top first splicing module 31 is close to the platform surface, it is convenient for on-site construction workers to perform construction operations, which makes it easy to operate and control the locking device 34. Compared with the prior art, this embodiment does not need to use the counterweight method to adjust the relative position between each floating module 1, and does not need to directly perform mortise and tenon splicing on the floating module 1 that is seriously affected by the buoyancy and / or water wave pressure at sea. Therefore, it can simplify the splicing operation process of each floating module 1, reduce the difficulty of assembly construction of the floating platform 100, and improve construction efficiency.

[0049] On the contrary, the operator only needs to release the locking state of the locking device 34 to salvage the first flexible splicing piece 3 from the first splicing cavity. During this process, the first flexible splicing piece 3 gradually changes from the contracted state to the original extended state, and the limiting device 32 on each first splicing module 31 gradually separates from the cavity wall of the first splicing cavity, and each first splicing module 31 moves longitudinally toward the upper port of the first splicing cavity with a larger cross-section area, so that each first splicing module 31 can be timely separated from the contact with the cavity wall of the first splicing cavity, reducing the difficulty of salvaging the first flexible splicing piece 3, thereby facilitating the maintenance of the splicing piece. Furthermore, the flexible splicing piece is easy to store and tow at sea, which can further increase the convenience of construction.

[0050] like Figure 1 As shown, the plurality of floating modules 1 have the same structure and the floating modules 1 are prefabricated to increase the interchangeability and expansion convenience of each floating module 1. Here, the floating module 1 is in the shape of a regular hexagonal prism as a whole. The regular hexagonal floating module has good paving ability and can cover the entire plane space without gaps, so it is the preferred embodiment of this embodiment. Modules with this characteristic also include regular triangular prism floating modules and regular quadrangular prism floating modules, some of their applications are described below. The upper end surface of the floating module 1 is used to define the table top of the floating platform 100, and the first splicing mortise and tenon 2 is formed on the side of the floating module 1. Preferably, each side of the floating module 1 is formed with a first splicing mortise and tenon 2, so that the various sides of the floating module 1 can be spliced ​​in a quick response to the needs of on-site operations to flexibly adjust the overall size of the floating platform 100. Here, the first splicing mortise and tenon 2 is a dovetail groove. In other embodiments, the first splicing mortise and tenon 2 can also be designed as a C-shaped groove. However, considering that the dovetail groove has good guiding properties and facilitates the alignment and installation of the first flexible splicing piece 3 and the first splicing cavity, it becomes the preferred embodiment of this embodiment.

[0051] In the present embodiment, the limiting device 32 is configured in the form of a mechanical trigger. The specific idea is that in response to the first flexible splicing piece 3 being converted from an extended state to a contracted state, the limiting device 32 is combined with the cavity wall of the first splicing cavity, that is, the outer wall of the floating module 1 to achieve a limiting effect. There are many specific forms of the limiting device 32 that can be thought of. For example, it can be a V-shaped elastic limiting arm arranged between two adjacent first splicing modules 31, which is not shown in the figure. When the first flexible splicing piece 3 is converted from an extended state to a contracted state, the adjacent first splicing modules 31 squeeze the elastic limiting arm in the middle, and the elastic limiting arm is embedded in the cavity wall of the first splicing cavity through elastic deformation to play a limiting role. When the first flexible splicing piece 3 returns to the extended state, the elastic limiting arm is separated from the cavity wall of the first splicing cavity. Since this type of elastic limiting arm is a non-standard part, it is difficult to manufacture and process it, so it is not the preferred method of the present embodiment.

[0052] like Figures 2 to 4 as well as Figure 6 As shown, the present embodiment also provides another specific form of a limiting device 32, which has higher reliability and is relatively easy to manufacture. The limiting device 32 includes two first limiting pins 322 relatively arranged in the lower first splicing module 31 in the transverse direction and a first push rod 33 arranged on the upper first splicing module 31. Preferably, the length of the first push rod 33 is less than the interval between the two adjacent first splicing modules 31 in the extended state or the length of the first chain 36. The first splicing mortise and tenon 2 is provided with a first plugging recess 21 that matches the corresponding first limiting pin 322. The first limiting pin 322 is provided on the first splicing mortise and tenon groove 2. 22 is configured to be movable between a plug-in position and a disengaged position, wherein at the plug-in position the first limit pin 322 is inserted into the corresponding first plug-in recess 21, and at the disengaged position the first limit pin 322 is disengaged from the corresponding first plug-in recess 21, the first push rod 33 is configured to move downward in response to the first flexible splicing piece 3 being converted from an extended state to a contracted state and to push the first limit pin 322 in the first splicing module 31 below through a wedge mechanism to move it from the disengaged position to the plug-in position, the first limit pin 322 is spring-loaded to always return to the disengaged position when disengaged from the corresponding first push rod 33.

[0053] In this embodiment, the horizontal direction refers to a direction parallel to the surface of the floating platform 100. Figure 2 The longitudinal direction is perpendicular to the surface of the floating platform 100. Figure 2 In the Y direction, Figure 2 The schematic diagram roughly shows that the first flexible splicing member 3 is in the extended state and the limiting device 32 is in the disengaged position. At this time, the first limiting pin 322 is completely received in the corresponding first splicing module 31. Figure 3 and Figure 4 The schematic diagram roughly shows that the first flexible splicing piece 3 is in the contracted state and the limiting device 32 is in the plug-in position, at which time the first limiting pin 322 is inserted into the cavity wall of the first splicing cavity. Specifically, the side of the first splicing module 31 is provided with a mounting groove 312 that runs through in the transverse direction, the first limiting pin 322 is movably connected inside the mounting groove 312, the upper part of the first splicing module 31 is provided with an avoidance hole that is connected with the mounting groove 312, the first push rod 33 is fixed at the lower center of the corresponding first splicing module 31 and extends in the longitudinal direction, and the lower part of the first push rod 33 is opposite to the avoidance hole on the corresponding first splicing module 31.

[0054] In this embodiment, in order to further improve the maintenance convenience of the limiting device 32, the limiting device 32 is detachably mounted on the corresponding first splicing module 31. Specifically, the first push rod 33 can be connected to the lower part of the corresponding first splicing module 31 by threading, or connected to the lower part of the first splicing module 31 by a fixing pin, and the limiting device 32 also includes a first positioning sleeve 321 and a first spring 323. The first positioning sleeve 321 is cylindrical, and a buckle is arranged on its outer wall. The first splicing module 31 is provided with an embedding portion 313 adapted to the buckle. The first positioning sleeve 321 is fixed in the installation groove 312 through the cooperation of the buckle and the embedding portion 313. The first limiting pin 322 can be slidably sleeved in the first positioning sleeve 321. The outer wall of the first limiting pin 322 is provided with a first convex ring portion. The first spring 323 is connected between the first convex ring portion and the first positioning sleeve 321 and surrounds the outer peripheral side of the first limiting pin 322. One end of the first limit pin 322 has a first oblique wedge portion and the other end has a first insertion portion. When the first flexible splicing piece 3 is converted from the extended state to the telescopic state, the interval between the two adjacent first splicing modules 31 is gradually reduced, and the lower end of the first push rod 33 of the upper first splicing module 31 passes through the avoidance hole and gradually approaches and presses on the first oblique wedge portion of the lower first limit pin 322, and pushes the first limit pin 322 from the disengaged position to the plug-in position in the form of an oblique wedge mechanism. At this time, the first insertion portion is inserted into the corresponding first plug-in recess 21. On the contrary, when the first flexible splicing piece 3 is converted from the telescopic state to the extended state, the interval between the two adjacent first splicing modules 31 is gradually increased, and the lower end of the first push rod 33 of the upper first splicing module 31 gradually moves away from and disengages from the first oblique wedge portion of the lower first limit pin 322, and the first limit pin 322 returns from the plug-in position to the disengaged position under the pull of the first spring 323.

[0055] like Figure 2 , Figure 3 and Figure 5 As shown, Figure 2 The figure roughly shows the situation when the second limit latch 342 is in the disengaged position. Figure 3 and Figure 5The figure roughly shows the situation when the second limit pin 342 is in the plug-in position. In this embodiment, the locking device 34 includes two second limit pins 342 arranged opposite to each other in the transverse direction inside the first splicing module 31 at the top and a second push rod 35 detachably connected to the first splicing module 31 at the top. The second limit pin 342 is configured to be movable between a plug-in position and a disengagement position, wherein at the plug-in position, the second limit pin 342 is inserted into the cavity wall of the first splicing cavity, and at the disengagement position, the second limit pin 342 is disengaged from the cavity wall of the first splicing cavity. The second push rod 35 is detachably combined with the second limit pin 342, and the second push rod 35 is configured to be able to apply force to the second limit pin 342 in the direction of keeping the second limit pin 342 in the plug-in position in the combined state. The second limit pin 342 is spring-loaded to always return to the disengagement position when disengaged from the corresponding second push rod 35. Specifically, a second plugging recess 22 is further provided on the bottom surface of the first splicing groove 2, and the second limiting latch 342 is plugged into the second plugging recess 22 at the plugging position, thereby locking the first flexible splicing piece 3 in a contracted state.

[0056] In this embodiment, in order to simplify the design, the locking device 34 can adopt a structure that is substantially the same as that of the limiting device 32, except that in the locking device 34, the second push rod 35 is configured to apply force to the second limiting latch 342 in a direction that keeps the second limiting latch 342 in the plugged position. Specifically, the locking device 34 also includes a second positioning sleeve 341 and a second spring 343, the second positioning sleeve 341 is embedded and fixed inside the first splicing module 31, the second limiting latch 342 is slidably sleeved in the second positioning sleeve 341, a second convex ring portion is provided on the outer wall of the second limiting latch 342, and the second spring 343 is connected between the second convex ring portion and the second positioning sleeve 341 and surrounds the outer peripheral side of the second limiting latch 342. The second limit pin 342 has a second inclined wedge at one end and a second insertion portion at the other end. The second push rod 35 is connected to the first splicing module 31 at the top by threads. The lower end of the second push rod 35 forms an extrusion cone, which is combined with the second limit pin 342 through an inclined wedge mechanism. Specifically, by screwing the second push rod 35 to move it downward, the extrusion cone squeezes the second inclined wedge of the second limit pin 342, thereby pushing the second limit pin 342 from the disengaged position to the plug-in position, and the second insertion portion is inserted into the corresponding second plug-in recess 22. On the contrary, by screwing the second push rod 35 in the opposite direction to move it upward, the extrusion cone is separated from the second inclined wedge of the second limit pin 342, so that the second limit pin 342 is reset under the pull of the spring.

[0057] As another embodiment, the second push rod 35 can also be connected to the first splicing module 31 at the top by magnetic force, and the lower end of the second push rod 35 is combined with the second limit pin 342 through an inclined wedge mechanism. Specifically, a push rod mounting hole is provided on the first splicing module 31 at the top, and the second push rod 35 is installed in the push rod mounting hole, and a magnetic member for adsorbing the second push rod 35 in the push rod mounting hole is provided in the push rod mounting hole.

[0058] Preferably, the first splicing module 31 is adapted to the outer dimensions of the first splicing cavity. A matching slope 311 is formed on the outer edge of the first splicing module 31, and when the first flexible splicing piece 3 is embedded in the first splicing cavity, the matching slope 311 abuts against the cavity wall of the first splicing cavity.

[0059] Embodiment 2

[0060] The basic structure of this embodiment is the same as that of the first embodiment, except that Figure 1 , Figure 7 As shown, in this embodiment, a second splicing groove 4 extending longitudinally and penetrating at least the upper end is formed at the side edge of the floating module 1. Preferably, the second splicing groove 4 is penetrated at both the upper and lower ends. The second splicing groove 4 is configured to have a taper and to make a plurality of the second splicing grooves 4 enclose a second splicing cavity with a gradually reduced cross-sectional area from top to bottom at at least one splicing position; the floating platform 100 also includes a second flexible splicing member 5 embedded in the second splicing cavity, which is configured to be convertible between an extended state and a contracted state, including a plurality of second splicing modules 51 that are gradually reduced in size from top to bottom and are sequentially connected in series. Preferably, the plurality of second splicing modules 51 are connected in series by a second chain 52. In the extended state, the plurality of second splicing modules 51 are connected in series by a second chain 52. The second splicing modules 51 are spaced apart in the longitudinal direction, and the second splicing modules 51 are suitable for being connected to the second splicing mortise and tenon grooves 4 by mortise and tenon joints, wherein the second splicing cavity is configured to convert the second flexible splicing member 5 from an extended state to a contracted state while receiving the second splicing mortise and tenon grooves 4, and the second splicing mortise and tenon grooves 4 are C-shaped grooves. At this time, the second splicing modules 51 are in the shape of a multi-leaf clover. In the first embodiment, since three floating modules 1 need to be spliced ​​at the splicing side edges at the same time to achieve full paving, each floating module 1 is provided with a second splicing mortise and tenon groove 4. In order to be able to be connected to the three second splicing mortise and tenon grooves 4 at the same time to increase the restraint force on the floating module 1 in the horizontal direction, the second splicing module 51 is set in the shape of a clover.

[0061] In the first embodiment, it has been learned that the floating module 1 in the shape of a regular triangular prism, a regular quadrangular prism or a regular hexagonal prism has good geometric characteristics and close-laying ability. However, if only the first flexible splicing piece 3 and the first splicing cavity described in the first embodiment are used to splice the sides of each floating module 1, the following problems will occur: under the influence of the seawater buoyancy and / or water wave pressure from an uncertain direction, the mutual extrusion of each floating module 1 will produce significant stress concentration at the side edge, thereby greatly reducing the reliability of the above floating module 1. In this embodiment, since the second splicing groove 4 surrounding the second splicing cavity is a C-shaped groove, the second splicing module 51 is connected to the second splicing groove 4 by mortise and tenon, so the shape is also adapted to the C-shaped groove. In this way, on the one hand, stress concentration caused by direct contact between adjacent floating modules 1 at the side edge can be avoided. On the other hand, the connection between each second splicing module 51 and the corresponding second splicing groove 4 adopts arc transition, which can effectively resist the marine forces from all directions such as wave force or water wave pressure, and further improve the structural strength and stability of the floating platform 100.

[0062] like Fig. 9 As shown, the floating platform 100 is spliced ​​with regular triangular floating modules 1. Since the taper of the side edges of the regular triangular floating modules 1 at the splicing point is relatively large, the diameter of the second splicing groove 4 set at the side edge splicing point should also be relatively large to avoid the occurrence of excessive local stress as much as possible. At this time, six floating modules 1 are required to be spliced ​​at the side edges to achieve full paving, so the second splicing module 51 should be set to be six-leaf clover shape.

[0063] like Fig.10 As shown, the floating platform 100 is assembled using a regular quadrangular prism-shaped floating module 1. In this case, the second assembly module 51 should be arranged in a four-leaf clover shape.

[0064] Preferably, at this time, a matching inclined surface matching the shape of the second splicing cavity is formed on the side edge of the second splicing module 51 .

[0065] In this embodiment, taking the second splicing module 51 as a clover-shaped example, the thickness of the second splicing module 51 at the top is related to the initial velocity of the floating platform 100, the wave circle frequency, the amplitude, the wave number, the depth of the location of the second splicing module 51 and the water depth, and the relationship is as follows:

[0066]

[0067] Wherein, D is the thickness of the second splicing module 51 at the top; v0 is the initial velocity of the platform; ω is the wave circular frequency; A is the wave amplitude; k is the wave number; z is the depth of the location of the second splicing module 51 at the top; d is the water depth; is the initial random phase; g is the gravitational acceleration.

[0068] In one embodiment, the thickness relationship of the second splicing module 51 is derived as follows:

[0069] According to the small wave amplitude theory, the calculation formula of the wave height η at a distance x from the origin is as follows:

[0070]

[0071] Where A is the amplitude; k is the wave number; ω is the wave circular frequency; is the random phase at the beginning;

[0072] The acceleration a generated by the hydrodynamic load in the longitudinal direction z As follows:

[0073]

[0074] Wherein, z is the depth of the location of the second splicing module 51; d is the water depth;

[0075] According to Newton's second law, the actual acceleration a of the second splicing module 51 at the top is as follows:

[0076]

[0077] The initial velocity of the platform is v0, and the platform motion is approximately equivalent to uniformly accelerated motion. Then, the maximum displacement H of the second splicing module 51 in the z-axis direction is as follows:

[0078]

[0079] To prevent the second splicing module 51 from popping out of the channel, that is, the second splicing cavity, the thickness D thereof satisfies the following formula:

[0080] D≥H

[0081] In this embodiment, the radius of the first limiting latch 322 or the second limiting latch 342 is related to the density of water, the volume of the initial position platform submerged in water, and the maximum shear stress that the latch rod can withstand, and the relationship is as follows:

[0082]

[0083] Where R is the radius of the pin; ρ w is the density of water; V0 is the volume of the platform submerged in water at the initial position; τ max is the maximum shear stress that the latch rod can withstand; g is the acceleration due to gravity.

[0084] In one embodiment, the radius relationship of the first limiting pin 322 or the second limiting pin 342 is derived as follows:

[0085] The buoyancy F acting on the platform in the heave direction is approximately:

[0086] F=ρ w VxD

[0087] In the formula, ρ w is the density of water; g is the acceleration due to gravity; V0 is the volume of the platform submerged in water at the initial position.

[0088] The shear stress τ on the central axis of the pin is as follows:

[0089]

[0090] Where R is the radius of the pin.

[0091] To ensure the safety of the structure, the shear stress on the central axis of the bolt rod should be less than the maximum shear stress of the structure, and the bolt radius R satisfies the following formula:

[0092]

[0093] In the formula, τ max is the maximum shear stress that the latch rod can withstand.

[0094] Embodiment 3

[0095] like Fig.11 As shown, based on the second embodiment, this embodiment further proposes an assembly construction method of the above-mentioned offshore assembled floating platform 100, comprising the following steps:

[0096] The outline of the floating platform 100 is specifically constructed as follows: a plurality of the floating modules 1 are arranged in an array according to the design requirements and the relative positions of the floating modules 1 are constrained by using constraining members, for example, high-strength lashing ropes are used to apply constraints at the boundaries of the arranged floating modules 1, and a first splicing cavity is formed between the first splicing grooves 2 of adjacent floating modules 1 and a second splicing cavity is formed between the second splicing grooves 4.

[0097] Assemble the first flexible splicing part 3, specifically: unlock the locking device 34, and install each of the limiting devices 32 between the corresponding adjacent first splicing modules 31. For example, first install the first limiting pin 322 of each limiting device 32 in the corresponding installation groove 312. Specifically, first assemble the first limiting pin 322, the first positioning sleeve 321 and the first spring 323, and then embed the first positioning sleeve 321 in the corresponding installation groove 312 and debug the plug-in function of each first limiting pin 322, and then install the first push rod 33 on the corresponding first splicing module 31. In some methods, the first push rod 33 is fixedly connected to the first splicing module 31. The fixation can be detachable or non-detachable, which is selected according to construction requirements.

[0098] Preferably, the method further includes providing an anchoring ring on the top first splicing module 31 for connecting the cable.

[0099] It should be noted that, here, the step of forming the outline of the floating platform 100 and the step of assembling the first flexible splicing piece 3 can be performed simultaneously. In order to facilitate the testing of the assembled first flexible splicing piece 3, as shown in FIG. Fig.11 As shown, the outline of the floating platform 100 may also be assembled first, which is not limited here.

[0100] Preferably, the sizes of the first splicing module 31 and the second splicing module 51 are determined according to the results of topology optimization.

[0101] Embedding the first flexible splicing piece 3, specifically: use a cable to hang the first flexible splicing piece 3 in the extended state into the corresponding first splicing cavity, adjust the posture and position of each first splicing module 31 during the hanging process, so that each first splicing module 31 is respectively embedded at a different depth position in the splicing cavity, ensuring that the first flexible splicing piece 3 enters a contracted state, and at the same time, each limit device 32 is combined with the cavity wall of the first splicing cavity, and at this time, the locking device 34 is started to lock the current state of the first flexible splicing piece 3.

[0102] Under the premise of good environmental conditions, a drone can also be used to drop the first flexible splicing piece 3 into the corresponding first splicing cavity, further expanding the applicable scenarios of the assembly construction method, such as building a remote floating platform.

[0103] Embedding the second flexible splicing piece 5 specifically comprises: using a cable to hang the second flexible splicing piece 5 in an extended state into the corresponding second splicing cavity, and adjusting the posture and position of each second splicing module 51 during the hanging process, so that each second splicing module 51 is respectively embedded at a different depth position in the splicing cavity, ensuring that the second flexible splicing piece 5 enters a contracted state.

[0104] Under the premise of good environmental conditions, a drone can also be used to drop the second flexible splicing piece 5 into the corresponding second splicing cavity.

[0105] Compared with the traditional solution, this method follows the main idea of ​​building the overall outline first and then splicing the nodes, which can effectively avoid the outline deformation caused by the splicing misalignment. Moreover, the positional relationship between the various splicing nodes on the platform can be used to ensure that the force on the platform is relatively uniform during the splicing process, thereby maintaining the stability of the entire platform under construction. And under this main idea, the splicing order of the first flexible splicing piece 3 and the second flexible splicing piece 5 can be reasonably arranged. On the premise that the splicing operation of the first flexible splicing piece 3 has been completed, the relative position of each floating module 1 has been basically defined, so that the floating platform 100 at this time can be used as a supporting foundation, thereby facilitating the splicing operation of the second flexible splicing piece 5, greatly improving the convenience and efficiency of construction.

[0106] In summary, in the above embodiment, thanks to the taper design of the first splicing cavity and the shape matching of the first flexible splicing piece 3 and the first splicing cavity, not only the splicing alignment of the first flexible splicing piece 3 and the first splicing cavity becomes very easy, but also the first flexible splicing piece 3 can be used to convert from the extended state to the telescopic state in the first splicing cavity to trigger the limit device 32 on each floating module 1 so that it can be combined with the cavity wall of the first splicing cavity to limit the relative position of two adjacent modules in the longitudinal direction. At the same time, since each floating module 1 and the first splicing mortise and tenon 2 are connected by mortise and tenon, the relative position of two adjacent modules in the transverse direction can also be limited. The construction operator only needs to control the locking device 34 of the top first splicing module 31 to lock the first flexible splicing piece 3 in the contracted state to complete the splicing of adjacent floating modules 1. Compared with the method of directly splicing the floating module 1 with mortise and tenon at sea, the splicing and assembly process between modules can be greatly simplified and the construction difficulty can be reduced. On the contrary, the operator only needs to release the locking state of the locking device 34 to salvage the first flexible splicing piece 3 from the first splicing cavity for later maintenance.

[0107] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the partial description of the previous embodiments.

[0108] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An offshore assembled floating platform, characterized in that: include: A plurality of spliced ​​floating modules are arranged in an array, and two adjacent floating modules are provided with first splicing grooves extending in the longitudinal direction and penetrating at least the upper end, wherein the first splicing grooves are configured to have a taper and the two first splicing grooves enclose a first splicing cavity with a gradually reduced cross-sectional area from top to bottom at at least one splicing position; A first flexible splicing piece embedded in the first splicing cavity is configured to be convertible between an extended state and a contracted state, and the first flexible splicing piece includes a plurality of first splicing modules whose sizes gradually decrease from top to bottom and are connected in series in sequence. In the extended state, the plurality of first splicing modules are spaced apart in the longitudinal direction, and the first splicing modules are suitable for being connected with the first splicing mortise and tenon joints; wherein the first splicing cavity is configured to be able to convert the first flexible splicing piece from an extended state to a contracted state while receiving the first flexible splicing piece, and a limiting device is arranged between adjacent first splicing modules, and the limiting device is configured to combine with the cavity wall of the first splicing cavity in response to the first flexible splicing piece being converted from an extended state to a contracted state so as to limit the relative position of the mutually spliced ​​floating modules in the longitudinal direction, and to detach from the cavity wall of the first splicing cavity in response to the first flexible splicing piece being converted from a contracted state to an extended state, and a locking device for locking the first flexible splicing piece into a contracted state is arranged on the first splicing module at the top.

2. The offshore assembled floating platform according to claim 1, characterized in that: The floating module is prefabricated and has an overall regular N-prism shape, where N is 3, 4 or 6. The upper end surface of the floating module is used to define the table top of the floating platform, and the first splicing groove is formed on the side of the floating module.

3. The offshore assembled floating platform according to claim 2, characterized in that: A second splicing groove extending in the longitudinal direction and penetrating at least the upper end is formed at the side edge of the floating module, the second splicing groove is constructed to have a taper and at least one splicing position makes multiple second splicing grooves surround a second splicing cavity with a cross-sectional area gradually decreasing from top to bottom; the floating platform also includes a second flexible splicing piece embedded in the second splicing cavity, which is configured to be convertible between an extended state and a contracted state, including multiple second splicing modules with sizes gradually decreasing from top to bottom and connected in series in sequence, in the extended state, multiple second splicing modules are spaced apart in the longitudinal direction, and the second splicing modules are suitable for mortise and tenon connection with the second splicing groove, wherein the second splicing cavity is configured to convert the second flexible splicing piece from an extended state to a contracted state while receiving the second flexible splicing piece, and the second splicing groove is a C-shaped groove.

4. The offshore assembled floating platform according to claim 1, characterized in that: The first joint groove is a C-shaped groove or a dovetail groove.

5. The offshore assembled floating platform according to claim 1, characterized in that: The limiting device is detachably mounted on the corresponding first splicing module.

6. The offshore assembled floating platform according to claim 1, characterized in that: The limiting device includes two first limiting pins relatively arranged inside the lower first splicing module in the transverse direction and a first push rod arranged on the upper first splicing module, the first limiting pins being configured to be movable between an insertion position and a disengagement position, wherein at the insertion position the first limiting pin is inserted into the cavity wall of the first splicing cavity, and at the disengagement position the first limiting pin is disengaged from the cavity wall of the first splicing cavity, the first push rod being configured to move downward in response to the first flexible splicing piece being converted from an extended state to a contracted state and to push the first limiting pin in the lower first splicing module through a wedge mechanism to move it from the disengagement position to the insertion position, the first limiting pin being spring-loaded to always return to the disengagement position when disengaged from the corresponding first push rod.

7. The offshore assembled floating platform according to claim 1, characterized in that: The locking device includes two second limit pins arranged opposite to each other in the transverse direction inside the first splicing module at the top and a second push rod detachably connected to the first splicing module at the top, the second limit pin being configured to be movable between an insertion position and a disengagement position, wherein at the insertion position the second limit pin is inserted into the cavity wall of the first splicing cavity, and at the disengagement position the second limit pin is disengaged from the cavity wall of the first splicing cavity, the second push rod is detachably coupled to the second limit pin, and the second push rod is configured to be able to apply force to the second limit pin in a direction to keep the second limit pin in the insertion position in a coupled state, and the second limit pin is spring-loaded to always return to the disengagement position when disengaged from the corresponding second push rod.

8. The offshore assembled floating platform according to claim 7, characterized in that: The second push rod is connected to the first splicing module at the top through threads, and the lower end of the second push rod is combined with the second limiting pin through an inclined wedge mechanism.

9. The offshore assembled floating platform according to claim 7, characterized in that: The second push rod can also be connected to the first splicing module at the top through magnetic force, and the lower end of the second push rod is combined with the second limiting pin through an inclined wedge mechanism.

10. An assembly construction method for an offshore assembled floating platform according to any one of claims 2 to 9, characterized in that: The steps include: The outline of the floating platform is formed by: arranging a plurality of the floating modules in an array according to the design requirements and constraining the relative positions of the floating modules so that a first splicing cavity is formed between the first splicing grooves of adjacent floating modules and a second splicing cavity is formed between the second splicing grooves; Assembling the first flexible splicing piece, specifically: unlocking the locking device, and installing each of the limiting devices between corresponding adjacent first splicing modules; Embedding the first flexible splicing piece, specifically: hanging the first flexible splicing piece in the extended state into the corresponding first splicing cavity, adjusting the posture and position of each first splicing module during the hanging process, so that each first splicing module is respectively embedded at a different depth position in the splicing cavity, ensuring that the first flexible splicing piece enters a contracted state, and at the same time each limit device is combined with the cavity wall of the first splicing cavity, and at this time, the locking device is activated to lock the current state of the first flexible splicing piece; Embedding the second flexible splicing piece specifically includes: hanging the second flexible splicing piece in the extended state into the corresponding second splicing cavity, adjusting the posture and position of each second splicing module during the hanging process, so that each second splicing module is respectively embedded at a different depth position in the splicing cavity, ensuring that the second flexible splicing piece enters a contracted state.

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