Multifunctional offshore platform deck structure and optimization method

Abstract

The application provides a multifunctional offshore platform deck structure and an optimization method, which comprises a deck, a V-shaped water receiving groove and a circular arc water guide groove, the top of the V-shaped water receiving groove is fixedly connected with the bottom of the deck, and the internal space of the V-shaped water receiving groove is opposite to a first through hole on the deck for water flow; symmetrically arranged connecting plates are arranged on the outer side walls of the V-shaped water receiving groove, circular arc water guide grooves are arranged on both sides of the top opening of the V-shaped water receiving groove, and clamping grooves for cooperating with the connecting plates are arranged on the both sides, the clamping grooves and the connecting plates are connected through waterproof rubber pads, and a plurality of second through holes for water passing through are formed in the bottom of the outer wall of the V-shaped water receiving groove; the application realizes the drainage design of the offshore platform deck at a low cost, simultaneously optimizes the spacing of the V-shaped water receiving grooves and the maximum length that can be used by the V-shaped water receiving grooves, and synchronously guarantees the cost and the stability of the deck structure.

Description

Technical Field

[0001] This invention relates to the field of offshore platform technology, and in particular to a multifunctional offshore platform deck structure and optimization method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Currently, the main structural form of offshore platform deck structures is the "purlin and steel plate type". The main method is to weld "T" or "L" shaped steel purlins to the main structure, and then set steel plates on top to form the deck. The main construction method is to weld the purlins one by one to the steel beams, connect them to the upper flanges and webs of the steel beams, and then lay the steel plates on the purlins.

[0004] The traditional purlin steel plate deck currently has the following disadvantages: the on-site welding work is huge, which has become an important factor restricting the construction period; the traditional purlin steel plate deck has a single construction method and cannot be standardized in design and manufacturing, resulting in long design and construction cycles; it has a single function, only used as a deck and does not have other functions; when the structure is not sloped, the traditional deck structure cannot achieve drainage when there is no power.

[0005] Patent No. CN212500870U discloses a modular deck and an offshore booster station platform. It uses the trapezoidal first and second cavities to ensure that the modular deck is easy to assemble while ensuring its reliability. However, its manufacturing process is complex, it has no drainage function, and the double-layer plate also causes a lot of waste. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a multifunctional offshore platform deck structure and optimization method, which achieves drainage design for offshore platform decks at a lower cost. At the same time, it optimizes the spacing of V-shaped water inlets and the maximum usable length of V-shaped water inlets, ensuring both cost and deck structure stability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides a multifunctional offshore platform deck structure.

[0009] A multi-functional offshore platform deck structure, comprising:

[0010] The deck, V-shaped water inlet channel and arc-shaped water outlet channel; the top of the V-shaped water inlet channel is fixedly connected to the bottom of the deck; the internal space of the V-shaped water inlet channel is directly opposite the first through hole on the deck for water flow.

[0011] The outer wall of the V-shaped water receiving trough is symmetrically provided with connecting plates. The top opening of the arc-shaped water inlet trough is provided with slots on both sides for cooperating with the connecting plates. The slots are connected to the connecting plates by waterproof rubber pads. The bottom of the outer wall of the V-shaped water receiving trough has multiple second through holes for water to pass through.

[0012] As a further limitation of the first aspect of the present invention, a horizontal flange plate is fixedly connected to the bottom of the V-shaped water receiving trough, and the top of the hanger rod is slidably connected to both the horizontal flange plate and the connecting plate through a sliding groove. A bolt passing through the second through hole detachably connects the top of the hanger rod.

[0013] As a further limitation of the first aspect of the invention, the central axis of the arc-shaped water channel is at a set angle to the upper surface of the clamping plate.

[0014] As a further limitation of the first aspect of the invention, the angle is adjusted by means of a waterproof rubber pad.

[0015] As a further limitation of the first aspect of the present invention, the first end of the arc-shaped water intake channel is connected to the platform freshwater collection device, and the arc-shaped water intake channel is fixedly connected to the deck through a perforated reinforcing ring.

[0016] As a further limitation of the first aspect of the invention, the top of the V-shaped water receiving channel is welded and fixedly connected to the bottom of the deck; or, the top of the V-shaped water receiving channel is detachably connected to the bottom of the deck.

[0017] As a further limitation of the first aspect of the present invention, each of the adjacent V-shaped water receiving tanks is connected with a hanging rod, and the hanging rods of the adjacent V-shaped water receiving tanks are connected by a connecting V-shaped groove.

[0018] As a further limitation of the first aspect of the invention, a hanger rod is connected to the connecting V-groove.

[0019] As a further limitation of the first aspect of the present invention, the opening angle of the V-shaped water receiving groove is between 30° and 60°.

[0020] The second aspect of this invention provides an optimization method for a multifunctional offshore platform deck structure.

[0021] An optimization method for a multi-functional offshore platform deck structure, applied to the multi-functional offshore platform deck structure described in the first aspect of this invention, includes the following steps:

[0022] Determine the functional areas and select a V-shaped water receiving channel or a connecting V-shaped channel according to functional needs;

[0023] Determine the uniformly distributed load on the deck and the load on the equipment suspended by the booms, and determine the spacing of the V-shaped water collection channels based on the deck structure layout characteristics;

[0024] Calculate the maximum usable length of the V-shaped water inlet groove based on the spacing of the V-shaped water inlet groove. The maximum length is the length when the stress ratio or deflection ratio is equal to or less than 0.95 after calculation.

[0025] If the spacing between the main structural beams in the selected deck area is greater than the maximum length of the V-shaped water inlet, decrease the spacing of the V-shaped water inlet and continue the previous step. If the spacing between the main structural beams in the selected deck area is less than the maximum length of the V-shaped water inlet, and the calculated stress ratio or deflection ratio is less than 0.5, increase the spacing of the V-shaped water inlet and continue the previous step until the requirements are met, thus obtaining the optimal spacing of the V-shaped water inlet and the maximum usable length of the V-shaped water inlet.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. This invention innovatively develops a multifunctional offshore platform deck structure, which realizes the drainage design of the offshore platform deck at a lower cost. It adopts standardized design, factory finished product processing, and on-site splicing and assembly of each module, which greatly shortens the design and manufacturing time.

[0028] 2. This invention innovatively develops a multifunctional offshore platform deck structure, with derricks installed below the deck and mechanical connections used to reduce welding workload and shorten the construction period.

[0029] 3. This invention innovatively develops a multifunctional offshore platform deck structure with a drainage mechanism under the deck, which is sealed with a special rubber gasket and connected to the offshore platform drainage facilities or freshwater collection facilities to form a drainage system, enabling drainage to be completed without structural slope.

[0030] 4. This invention innovatively proposes an optimization method for the deck structure of a multifunctional offshore platform, and simultaneously optimizes the design of the spacing of the V-shaped water inlet channels and the maximum usable length of the V-shaped water inlet channels, thus ensuring both cost and deck structure stability.

[0031] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0033] Figure 1 A schematic diagram of the multifunctional offshore platform deck structure provided in Embodiment 1 of the present invention. Figure 1 ;

[0034] Figure 2A schematic diagram of the multifunctional offshore platform deck structure provided in Embodiment 1 of the present invention. Figure 2 ;

[0035] Figure 3 A schematic diagram of the multifunctional offshore platform deck structure provided in Embodiment 1 of the present invention. Figure 3 ;

[0036] Figure 4 A schematic diagram of the multifunctional offshore platform deck structure provided in Embodiment 1 of the present invention. Figure 4 ;

[0037] Among them, 1-deck; 2-V-shaped water inlet trough; 3-arc-shaped water inlet trough; 4-hanging rod; 5-perforated reinforcing ring; 6-V-shaped groove for connection; 7-waterproof rubber pad; 8-horizontal flange plate; 9-first through hole; 10-second through hole; 11-connecting plate; 12-bolt. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0042] Example 1:

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, Embodiment 1 of the present invention provides a multifunctional offshore platform deck structure, comprising:

[0044] Deck 1, V-shaped water receiving channel 2 and arc-shaped water inlet channel 3, the top of V-shaped water receiving channel 2 is fixedly connected to the bottom of deck 1, and the internal space of V-shaped water receiving channel 2 is directly opposite the first through hole 9 on the deck for water flow.

[0045] The outer wall of the V-shaped water receiving trough 2 is symmetrically provided with connecting plates 11. The top opening of the arc-shaped water inlet trough 3 is provided with slots on both sides for cooperating with the connecting plates 11. The slots are connected to the connecting plates by waterproof rubber pads 7. The bottom of the outer wall of the V-shaped water receiving trough 2 has multiple second through holes for water to pass through.

[0046] In this embodiment, preferably, the first through holes 9 are all rectangular through holes opened on the deck to cooperate with the V-shaped water receiving groove 2 to ensure that the water on the deck can flow into the V-shaped water receiving groove 2 quickly; of course, it can be understood that multiple dense circular first through holes or other shapes such as rhombuses can also be set. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0047] In this embodiment, the arc of the opening of the arc-shaped water channel 3 is less than 90° to ensure drainage.

[0048] In this embodiment, preferably, the bottom of the V-shaped water receiving trough 2 is fixedly connected to a horizontal flange plate 8, and the top of the boom is slidably connected to both the horizontal flange plate 8 and the connecting plate 11 through a sliding groove. The bolt 12 passing through the second through hole 10 detachably connects the top of the boom to the V-shaped water receiving trough 2.

[0049] In this embodiment, preferably, the central axis of the arc-shaped water inlet trough 3 is at a set angle to the upper surface of the clamping plate, so as to ensure that water can flow quickly from the arc-shaped water inlet trough 3, thereby improving drainage efficiency. The set angle can be adjusted by the waterproof rubber pad 7, which is simple and convenient to adjust and has a low cost.

[0050] In this embodiment, preferably, the first end of the arc-shaped water inlet trough 3 is connected to the platform freshwater collection device, and the arc-shaped water inlet trough 3 is fixedly connected to the deck through the perforated reinforcing ring 5.

[0051] In this embodiment, optionally, the top of the V-shaped water receiving trough 2 is welded and fixedly connected to the bottom of the deck 1;

[0052] Alternatively, understandably, in some other implementations, the top of the V-shaped water inlet can be detachably connected to the bottom of the deck, for example, by bolting the material together. The number of bolts can be adjusted according to calculation requirements. A porous, water-permeable rubber pad can be added to the bolt area, or an impermeable rubber pad can be used to level the height with the deck 1 to prevent people from tripping.

[0053] In this embodiment, optionally, each adjacent V-shaped water receiving tank is connected to a hanger rod, and the hangers of adjacent V-shaped water receiving tanks are connected by a connecting V-groove 6, on which the hanger rod is connected.

[0054] In this embodiment, the opening angle of the V-shaped water receiving groove is between 30° and 60°, and can be any angle between 30° and 60°, such as 30°, 60° or 45°. In this embodiment, 45° is preferred.

[0055] When the present invention is used in an area requiring drainage: the center of the drainage hole of the deck 1 is aligned with the center of the V-shaped water receiving channel 2, the arc-shaped water diversion channel 3 is connected to the V-shaped water receiving channel 2 through a slot, when the arc-shaped water diversion channel 3 passes through the platform structure beam, the perforated reinforcing ring 5 is used to reinforce the perforated part, and the slope of the arc-shaped water diversion channel 3 is adjusted by the rubber pad.

[0056] When there is water on deck 1, the water enters the V-shaped water receiving channel 2 through the pre-reserved drainage hole on the deck, and falls into the arc-shaped water inlet channel 3 through the small hole at the bottom of the V-shaped water receiving channel 2. Then, it is discharged to the outside of the platform or the fresh water collection device on the platform through the arc-shaped water inlet channel 3. The fresh water collection device is equipped with a waterproof rubber ring that is mechanically connected or welded to the arc-shaped water inlet channel 3. The fresh water collection device is equipped with a filter screen to perform preliminary filtration of rainwater when fresh water needs to be collected. The fresh water collection device is equipped with a cleaning hole with a cover plate to facilitate the cleaning of filtered impurities.

[0057] When this invention is used in areas supporting and suspending equipment such as cable trays and pipelines: the suspension rod 4 is slidably connected to the V-shaped water receiving groove 2 through a sliding groove, and can be positioned according to the location of the supported equipment. The suspension rod is fixed to the V-shaped water receiving groove 2 with bolts 12. When the suspension rod needs to be adjusted after installation, the bolt rod in 4 can be removed, and the position of the suspension rod 4 can be adjusted by sliding along the V-shaped water receiving groove 2, so as to achieve adjustment without cutting or welding.

[0058] In this embodiment, the lifting rod 4 can be set as a single or multiple rods according to the load and characteristics of the equipment being lifted. The lifting rod 4 is fixed to the V-shaped water receiving groove 2 by bolts. When the lifting rod 4 needs to be set between two V-shaped water receiving grooves 2 due to the requirements of pipeline or cable tray layout, the connecting V-shaped groove 6 is used to connect with the V-shaped water receiving grooves 2 on both sides. The connection method is mechanical connection through slot.

[0059] In terms of structure, the V-shaped water inlet of this deck structure system adopts a V-shaped web special steel structure section, which not only meets the functional requirements, but also makes the structure more stable. In addition, this section reduces the height of the V-shaped water inlet, saving space under the deck. Compared with the traditional purlin section, this section is more suitable for the transportation of the V-shaped water inlet and the deck after they are prefabricated in the factory.

[0060] In terms of construction and economy, compared with traditional deck structures, this invention uses standardized, universal structural modules to form a structural system, which can be prefabricated and installed in the factory and can be mass-produced, reducing the amount of on-site welding and assembly work. This invention provides two connection schemes, which the platform assembly unit can choose according to site requirements.

[0061] The deck structure system of this invention is equipped with a drainage module, which can realize deck drainage without power or slope, avoiding problems such as inconvenient equipment installation, insufficient comfort, high construction difficulty, and reduced structural safety caused by the tilting of the main structural beam due to drainage.

[0062] The deck structure system of this invention is equipped with a freshwater collection module and can achieve preliminary filtration of rainwater. The invention is equipped with hangers and adopts mechanical connection, which reduces the amount of welding work. The hangers can be reserved at the same time as the deck is made, and the position of the hangers can be adjusted before, during and after installation without cutting and welding, which greatly increases the convenience of construction, reduces the construction difficulty and shortens the construction cycle.

[0063] Example 2:

[0064] Embodiment 2 of the present invention provides an optimization method for the deck structure of a multifunctional offshore platform, comprising the following processes:

[0065] S1: Determine the functional area and select different V-shaped water collection channels according to functional needs. For example, if the deck area needs drainage, select the drainage function module. If the deck area needs to support equipment or pipes, select the lifting rod.

[0066] S2: Determine the uniformly distributed load on the deck and the load on the equipment suspended by the boom. Commonly used deck loads are 4, 6, 8, and 12 kN / m. 2 The concentrated load of commonly used equipment is less than or equal to 15kN;

[0067] S3: Determine the spacing of the V-shaped water inlet grooves based on the characteristics of the deck structure layout, and calculate the maximum length of the V-shaped water inlet grooves that can be used under this spacing (the maximum length is the length when the calculated stress ratio or deflection ratio is close to (less than) 0.95).

[0068] S4: If the spacing between the main structural beams in the selected deck area is greater than the maximum length of the V-shaped water inlet, decrease the spacing of the V-shaped water inlet and continue with the process in S3; if the spacing between the main structural beams in the selected deck area is less than the maximum length of the V-shaped water inlet, and the calculated stress ratio or deflection ratio is less than 0.5, increase the spacing of the V-shaped water inlet and continue with the process in S3 until the requirements are met, and obtain the optimal spacing of the V-shaped water inlet and the maximum length that the V-shaped water inlet can be used.

[0069] Specifically, in engineering, the stress ratio is generally controlled below 0.95, with 0.7 to 0.8 being preferable. Below 0.5, the strength of the component is somewhat wasted, allowing it to withstand greater loads or increase the length or spacing of the components.

[0070] In this embodiment, anti-corrosion measures are selected according to the usage environment of the V-shaped water receiving channel. In this invention, galvanizing is recommended as the anti-corrosion method for steel structure components. The installation method is determined according to the site conditions and the requirements of the installation unit. Both ends of the V-shaped water receiving channel need to be welded to the main structural beam of the platform. The V-shaped water receiving channel and the deck can be connected by welding or bolting. If the construction period is tight or the installation is at sea, it is recommended to use bolting to connect the V-shaped water receiving channel and the deck.

[0071] This invention provides a solution for a common deck load of 6 kN / m 2 Application examples of selecting multifunctional V-shaped water receiving channels with different spacings.

[0072] The table below shows the specific optimization data for the V-shaped water inlet.

[0073]

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-functional offshore platform deck structure, characterized in that, include: The deck, V-shaped water inlet channel and arc-shaped water outlet channel; the top of the V-shaped water inlet channel is fixedly connected to the bottom of the deck; the internal space of the V-shaped water inlet channel is directly opposite the first through hole on the deck for water flow. The outer wall of the V-shaped water receiving trough is symmetrically provided with connecting plates. The top opening of the arc-shaped water inlet trough is provided with slots on both sides for cooperating with the connecting plates. The slots are connected to the connecting plates by waterproof rubber pads. The bottom of the outer wall of the V-shaped water receiving trough has multiple second through holes for water to pass through. The bottom of the V-shaped water receiving trough is fixedly connected to a horizontal flange plate. The top of the hanger rod is slidably connected to both the horizontal flange plate and the connecting plate through a sliding groove. Bolts passing through the second through hole detachably connect the top of the hanger rod. Each adjacent V-shaped water receiving tank is connected to a hanger rod, and the hangers of adjacent V-shaped water receiving tanks are connected by a V-shaped groove. A hanger rod is connected to the V-groove for connection; The optimization method for the deck structure of the multi-functional offshore platform. Includes the following processes: Determine the functional areas and select a V-shaped water receiving channel or a connecting V-shaped channel according to functional needs; Determine the uniformly distributed load on the deck and the load on the equipment suspended by the booms, and determine the spacing of the V-shaped water collection channels based on the deck structure layout characteristics; Calculate the maximum usable length of the V-shaped water inlet groove based on the spacing of the V-shaped water inlet groove. The maximum length is the length when the stress ratio or deflection ratio is equal to or less than 0.95 after calculation. If the spacing between the main structural beams in the selected deck area is greater than the maximum length of the V-shaped water inlet, decrease the spacing of the V-shaped water inlet and continue the previous step. If the spacing between the main structural beams in the selected deck area is less than the maximum length of the V-shaped water inlet, and the calculated stress ratio or deflection ratio is less than 0.5, increase the spacing of the V-shaped water inlet and continue the previous step until the requirements are met, thus obtaining the optimal spacing of the V-shaped water inlet and the maximum usable length of the V-shaped water inlet.

2. The multi-functional offshore platform deck structure as described in claim 1, characterized in that, The central axis of the arc-shaped water inlet trough is at a set angle to the upper surface of the clamping plate.

3. The multi-functional offshore platform deck structure as described in claim 2, characterized in that, The angle is adjusted using a waterproof rubber pad.

4. The multi-functional offshore platform deck structure as described in claim 1, characterized in that, The first end of the arc-shaped water intake channel is connected to the platform's freshwater collection device, and the arc-shaped water intake channel is fixedly connected to the deck through a perforated reinforcing ring.

5. The multi-functional offshore platform deck structure as described in claim 1, characterized in that, The top of the V-shaped water inlet is welded and fixed to the bottom of the deck; or, the top of the V-shaped water inlet is detachably connected to the bottom of the deck.

6. The multi-functional offshore platform deck structure as described in any one of claims 1-5, characterized in that, The opening angle of the V-shaped water receiving trough is between 30° and 60°.

Images