Detachable anti-sinking plate suitable for soft soil foundation

Abstract

The utility model discloses a detachable anti-settling plate suitable for a soft soil foundation, which relates to the technical field of ocean engineering, and comprises a plurality of anti-settling plate units, and the adjacent anti-settling plate units are spliced through bolts; the anti-sinking plate unit comprises an anti-sinking base, a plane panel and an inclined panel. The plane panel is arranged in the middle of the upper portion of the anti-sinking base, the frame supporting structures are arranged at the positions, located on the two sides of the plane panel, of the upper portion of the anti-sinking base, the inclined panel is arranged on the frame supporting structures, and the bottom edge of the inclined panel and the side edge of the plane panel are adjacently connected to form a bearing groove structure of the submarine pipeline terminal body structure. The technical problem that an existing anti-sinking plate is inconvenient to transport and recycle is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ocean engineering, specifically to a detachable anti-sinking plate suitable for soft soil foundation. BACKGROUND

[0002] The pipeline end termination (PLET) is the most commonly used underwater facility, which is connected at the end of the submarine pipeline as the support of the connecting device, and becomes the access point or the switching point of the submarine pipeline system.

[0003] With the continuous development of ocean engineering, the pipeline end termination (PLET) is the key equipment of the underwater connection system in the deep development process of the offshore oil industry, and becomes an important part of oilfield development. There are a large number of soft soil foundations formed by silt in some industrial operation areas. In order to ensure that the pipeline end termination (PLET) can be normally butt-welded and installed, prevent the pipeline from sinking into the seabed to cause inconvenience to butt-welding and installation, a anti-sinking plate is generally designed and installed under the main structure of the pipeline end termination. Due to the particularity of the seabed, the strength, self-settlement, economy, easy processability, environmental protection and corrosion resistance need to be considered comprehensively, and a detachable anti-sinking plate suitable for soft soil foundation is selected as the design material.

[0004] At the same time, considering the operation mode of the actual engineering pipeline installation, there will be an error between the actual position of the pipeline and the target position, and the designed anti-sinking plate should have the function of preventing the pipeline end termination from sliding off the anti-sinking plate. In addition, the design of the anti-sinking plate should ensure the fluid circulation during the penetration of the anti-sinking plate. As an auxiliary installation structure, the ordinary steel anti-sinking plate is inconvenient to transport to the installation site due to its large volume and weight, and most of them are not convenient to recycle after the main structure is installed, and are permanently left in the seabed. This is undoubtedly a larger cost waste for the engineering project, and also pollutes and damages the underwater natural environment. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve at least one of the above technical problems by providing a detachable anti-sinking plate suitable for soft soil foundation.

[0006] In the first aspect, the utility model embodiment provides a detachable anti-sinking plate suitable for soft soil foundation, which comprises a plurality of anti-sinking plate units, and adjacent anti-sinking plate units are spliced through bolts;Wherein, the anti-sinking plate unit comprises an anti-sinking base, a plane panel and an inclined panel;The plane panel is arranged above the middle position of the anti-sinking base, frame support structures are arranged above the anti-sinking base at both sides of the plane panel, the inclined panel is arranged on the frame support structure, and the bottom edge of the inclined panel is adjacent to the side edge of the plane panel to form a receiving groove structure of the main structure of the submarine pipeline end termination.

[0007] Further, a circular through hole is arranged on the plane panel.

[0008] Further, a non-slip mat is arranged on the upper surface of the plane panel.

[0009] Further, the anti-sinking base is a plane frame structure.

[0010] Further, the materials of the anti-sinking base, the plane panel, the inclined panel and the frame support structure are all aluminum alloy materials.

[0011] Further, an anti-sinking plate apron is arranged at the edge of the anti-sinking base, and an apron reinforcing elbow is arranged inside the anti-sinking plate apron.

[0012] Further, the frame support structure comprises a stand, an inclined brace arranged on the stand and an inclined brace cross beam connected with the inclined brace perpendicularly; the bottom end of the inclined brace is fixedly connected with the anti-sinking base, the top end of the inclined brace is fixedly connected with the top end of the stand, and the inclined panel is arranged on the inclined plane formed by the inclined brace and the inclined brace cross beam.

[0013] Further, a cross beam is arranged at the top end of the stand and located at the outer edge position of the inclined panel.

[0014] Further, a lifting point hole is further arranged on the outer side surface of the stand for connecting lifting rigging.

[0015] Further, a butt joint panel is arranged at the side edge of the anti-sinking plate unit, bolt holes are arranged on the butt joint panel, an inclined brace reinforcing elbow is arranged at the connecting position of the butt joint panel and the frame support structure; adjacent anti-sinking plate units are bolted together through the butt joint panel.

[0016] The utility model provides a detachable anti-sinking plate suitable for soft soil foundation, which is designed by splitting the anti-sinking plate into multiple units and connecting adjacent units through bolts; the design of non-slip mat and inclined panel can effectively prevent pipelines from sliding off the anti-sinking plate; meanwhile, the opening of the plane panel fully guarantees the fluid circulation during the sinking of the anti-sinking plate, improving the sinking feasibility of the anti-sinking plate; the whole anti-sinking plate structure has small weight and can be split for transportation and underwater recovery, saving engineering cost and solving the technical problems of inconvenient transportation and recovery of existing anti-sinking plates. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of the overall structure of a detachable anti-sinking plate suitable for soft soil foundations provided by an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of an anti-sinking plate unit from a side and bottom perspective provided by an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of an anti-sinking plate unit from an upper perspective provided in an embodiment of the utility model.

[0021] In the figure: 1. Anti-sinking base, 2. Flat panel, 3. Inclined panel, 4. Frame support structure, 41. Column, 42. Diagonal brace, 43. Diagonal brace beam, 44. Beam, 5. Circular through hole, 6. Anti-sinking plate skirt, 7. Skirt plate reinforcement bracket, 8. Docking panel, 9. Bolt opening, 10. Diagonal brace reinforcement bracket, 11. Hanging point hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of a detachable anti-sinking plate suitable for soft soil foundations provided in accordance with an embodiment of the present utility model. Figure 1 As shown, the anti-sinking plate comprises a plurality of anti-sinking plate units, and adjacent anti-sinking plate units are spliced ​​together by bolts. The anti-sinking plate units comprise an anti-sinking base 1 , a flat panel 2 , and an inclined panel 3 .

[0024] Specifically, the flat panel 2 is arranged in the middle position above the anti-sinking base 1, and a frame support structure 4 is arranged above the anti-sinking base 1 at both sides of the flat panel 2. The inclined panel 3 is arranged on the frame support structure 4. The bottom edge of the inclined panel 3 is adjacent to the side edge of the flat panel 2 to form a receiving groove structure of the submarine pipeline terminal main structure to prevent the submarine pipeline terminal main structure from slipping.

[0025] Preferably, ifFigure 1 As shown in the figure, the circular through hole 5 is arranged on the plane panel 2, which can ensure the fluid permeability of the fluid above and below the plane panel 2 during the lowering and recycling of the anti-sinking plate, reduce the fluid resistance during the lowering, and greatly reduce the bottom adsorption force during the recycling lifting, thereby reducing the construction difficulty and improving the efficiency. Further, the circular through hole 5 arranged on the plane panel 2 can also reduce the material usage and the overall weight, and is better suitable for soft soil foundation.

[0026] Preferably, a non-slip pad is arranged on the upper surface of the plane panel 2, which is used to better prevent the seabed pipeline terminal main structure from sliding on the plane panel 2.

[0027] Figure 2 It is a side bottom view structure schematic diagram of an anti-sinking plate unit according to an embodiment of the present application. As shown in the figure, Figure 2 The anti-sinking base 1 is a plane frame structure, which can reduce the material usage and the overall weight while ensuring the strength.

[0028] In order to further reduce the overall weight of the anti-sinking plate provided by the embodiment of the present application, preferably, the materials of the anti-sinking base 1, the plane panel 2, the inclined panel 3 and the frame support structure 4 are all aluminum alloy materials. Further preferably, the material is high-strength 6061 aluminum alloy material. The embodiment of the present application adopts aluminum alloy material for overall structure design, which can greatly reduce the weight of the anti-sinking plate compared with the existing steel structure anti-sinking plate while ensuring the strength, thereby facilitating transportation and recycling.

[0029] Specifically, as shown in the figure, Figure 2 The edge of the anti-sinking base 1 is provided with an anti-sinking plate apron 6, and the inner side of the anti-sinking plate apron 6 is provided with an apron reinforcing elbow plate 7, which can ensure the strength of the frame edge of the anti-sinking base 1.

[0030] Specifically, as shown in the figure, Figure 2 The side edge of the anti-sinking plate unit is provided with a butt joint panel 8, the butt joint panel 8 is provided with a bolt opening 9, and the connection position of the butt joint panel 8 and the anti-sinking base 1 is provided with a diagonal bracing reinforcing elbow plate 10. Adjacent anti-sinking plate units are spliced together through the butt joint panel 8 by bolts. Preferably, the connection between adjacent anti-sinking plate units can adjust the bolt data according to the weight of the seabed pipeline terminal main structure, which has good adaptability.

[0031] Figure 3 It is an upper view structure schematic diagram of an anti-sinking plate unit according to an embodiment of the present application. As shown in the figure, Figure 3As shown in the drawings, the frame support structure 4 comprises a stand column 41, a diagonal brace 42 arranged on the stand column 41, and a diagonal brace crossbeam 43 connected perpendicularly with the diagonal brace 42; the bottom end of the diagonal brace 42 is fixedly connected with the anti-sinking base 1, the top end of the diagonal brace 42 is fixedly connected with the top end of the stand column 41, and the inclined plane panel 3 is arranged on the inclined plane formed by the diagonal brace 42 and the diagonal brace crossbeam 43.

[0032] Specifically, as shown in the drawings, Figure 1 and Figure 3 the top end of the stand column 41 is arranged at the outer edge position of the inclined plane panel 3 and is further provided with a crossbeam 44.

[0033] As shown in the drawings, Figures 1-3 the outer side surface of the stand column 41 is further provided with a lifting point hole 11 for connecting lifting rigging. In the embodiment of the present application, the lifting point hole 11 on a single anti-sinking plate unit can be used for lifting, which reduces the construction difficulty and facilitates underwater unhooking of the rigging, and is conducive to transportation of the anti-sinking plate unit to the installation site and underwater recovery.

[0034] The embodiment of the present application provides a detachable anti-sinking plate suitable for soft soil foundation, and the construction steps are as follows: the anti-sinking plate units are separated by the lifting point holes and are hoisted onto a transport ship (or a transport vehicle), are transported to the installation site, are connected into an integral structure by the butt joint panel through bolts, and are hoisted into water by a crane through the lifting point holes; the integral structure is further lowered to a target position, the pipeline to be butt jointed is laid above the plane panel, and welding installation work is performed; after the welding work is completed, the bolts connecting the adjacent anti-sinking plate units are disassembled in a reasonable order, the installed pipeline is shifted, the single anti-sinking plate units are hoisted and recovered respectively, and the pipeline is laid at the target position.

[0035] As known from the above description, the embodiment of the present application provides a detachable anti-sinking plate suitable for soft soil foundation, which is compared with a traditional steel anti-sinking plate, the anti-sinking plate is designed to be split into multiple units, and the adjacent units are connected through bolts; the design of the non-slip pad and the inclined plane panel can effectively prevent the pipeline from sliding off the anti-sinking plate; at the same time, the opening of the plane panel fully guarantees the fluid circulation during the sinking and the penetration process, improves the penetration feasibility of the anti-sinking plate, adopts aluminum alloy material, the entire anti-sinking plate structure is light in weight, and can be transported and recovered underwater, saves engineering cost, and solves the technical problems of inconvenient transportation and inconvenient recovery of the existing anti-sinking plate.

[0036] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0037] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification needs to exhibit each and every characteristic specified in the present specification. The specification can also be described in terms of a single preferred embodiment, it being understood that this single preferred embodiment can exhibit not every aspect or feature of the present specification. The specification can also be described in terms of a generic statement that the disclosure can include one, some, or all of a list of features. It is further understood that the specification is to be considered as a whole and not with reference to a single feature or design element alone.

Claims

1. A detachable sinking prevention plate for soft ground, characterized by comprising: The anti-sinking plate unit comprises an anti-sinking base, a flat panel and an inclined panel. The flat panel is arranged at an intermediate position above the anti-sinking base, frame support structures are arranged at positions on both sides of the flat panel above the anti-sinking base, the inclined panel is arranged on the frame support structures, and the bottom edge of the inclined panel is connected to the side edge of the flat panel to form a receiving groove structure of a submarine pipeline terminal main body structure.

2. The detachable fender plate for soft ground according to claim 1, wherein: A circular through hole is arranged on the flat panel.

3. The detachable fender plate for soft ground according to claim 1, wherein: An anti-skid pad is arranged on the upper surface of the flat panel.

4. The detachable fender plate for soft ground according to claim 1, wherein: The anti-sinking base is a flat frame structure.

5. The detachable fender plate for soft ground according to claim 1, wherein: The anti-sinking base, the flat panel, the inclined panel and the frame support structures are all made of aluminum alloy material.

6. The detachable fender plate for soft ground according to claim 1, wherein: An anti-sinking plate apron is arranged at the edge of the anti-sinking base, and a apron reinforcing elbow is arranged inside the anti-sinking plate apron.

7. The detachable fender plate for soft ground according to claim 1, wherein: The frame support structure comprises a vertical column, an inclined brace arranged on the vertical column and an inclined brace cross beam connected perpendicularly to the inclined brace, the bottom end of the inclined brace is fixedly connected to the anti-sinking base, the top end of the inclined brace is fixedly connected to the top end of the vertical column, and the inclined panel is arranged on the inclined plane formed by the inclined brace and the inclined brace cross beam.

8. The detachable fender plate for soft ground foundation according to claim 7, wherein: A cross beam is further arranged at the top end of the vertical column at the outer edge position of the inclined panel.

9. The detachable fender plate for soft ground according to claim 7, wherein: A lifting point hole is further arranged on the outer side surface of the vertical column for connecting lifting rigging.

10. The detachable fender plate for soft ground according to claim 1, wherein: A butt joint panel is arranged at the side edge of the anti-sinking plate unit, bolt openings are arranged on the butt joint panel, an inclined brace reinforcing elbow is arranged at the connection position of the butt joint panel and the frame support structure. Adjacent anti-sinking plate units are bolted together through the butt joint panel.

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