CN219951876U - Deepwater jacket anti-sinking plate suitable for complex seabed landform - Google Patents

Abstract

The utility model discloses a deep water jacket anti-sinking plate suitable for complex submarine topography, which relates to the technical field of ocean engineering and comprises an anti-sinking plate frame, wherein an anti-sinking plate bottom plate is arranged on the bottom surface of the anti-sinking plate frame; the anti-sinking plate is designed to be inclined, an inclined strut is added between the anti-sinking plate frame and the upright post, and water is filled into the inclined strut of the anti-sinking plate and the upright post. The adaptability of the anti-sinking plate to complex seabed topography is improved in an innovative design mode, the anti-sliding capacity of the anti-sinking plate is improved, the lateral stability of the anti-sinking plate frame is improved, the number of supporting connection of the anti-sinking plate and a jacket is optimized, and the hydrostatic pressure resistance capacity of the anti-sinking plate structure is improved.

Description

Deepwater jacket anti-sinking plate suitable for complex seabed landform

Technical Field

The utility model relates to the technical field of ocean engineering, in particular to a deep water jacket anti-sinking plate suitable for complex submarine topography.

Background

Jacket platforms are one of the most common forms of fixed platforms, and jacket installation generally involves several stages, such as towing, launching, righting, and sitting. The bottom stage is to gradually lower the floating crane, the jacket is ballasted in the conduit legs by the water filling system, and the jacket structure is gradually contacted with the seabed mud surface. In order to ensure that the jacket structure cannot sink into deeper mud, an anti-sinking plate is generally arranged on the jacket bottom structure.

Conventional anti-heave plates are typically horizontal, embedded in or suspended below the jacket substructure, typically triangular or rectangular in design, and the outer frame is the primary load-bearing structure, typically consisting of steel tubing. However, this design has a major disadvantage for deep water jackets: first, poor adaptability to sea bed unevenness: conventional anti-settling plates are horizontal, typically arranged at the four corners of the bottom of the jacket, and typically the anti-settling plates at each corner will be designed to be of different heights to accommodate the height differences of the seabed; however, for relatively complex submarine topography, for example, when a large sand wave sand ridge exists, the conventional anti-sinking plate has poor adaptability, and the conditions of poor levelness of the bottom of the catheter frame seat, suspended bottom of the anti-sinking plate, suspended span and the like can occur; second, the anti-slip ability is poor: the conventional anti-sinking plate is designed to resist horizontal displacement in the process of the base of the catheter rack by means of the horizontal resistance of soil adsorption force and the structure, however, for the situation of larger site unevenness, horizontal load is increased due to poor levelness of the jacket, and the conventional anti-sinking plate has poor anti-sliding capability due to the fact that the anti-sinking plate cannot be well attached to a mud surface, and the adsorption force is small due to various factors; thirdly, the lateral stability of the sinking prevention plate frame is poor: the conventional anti-sinking plate is connected with the jacket bottom structure only through the upright post, and the formed gate-shaped frame has weak lateral force resistance. The horizontal wave flow force applied to the deepwater large jacket is larger, and the anti-sinking plate is required to bear additional horizontal load in order to adapt to the unevenness of the seabed; fourth, prevent sinking the board and support more strong to main structure dependence: the deep water jacket has a bottom weight of more than 3000 tons, which is 2 to 4 times that of the conventional jacket, and the anti-sedimentation surface is large, so that more upright post supports are needed. The Z-direction performance section with large wall thickness is required to be arranged on the bottom layer main structure of the jacket at the corresponding supporting position, so that the weight of the main structure is increased; fifth, the influence of hydrostatic pressure is great: the anti-sinking plate structure is the biggest in-depth of jacket structure, and is also biggest to this partial structure of deep water jacket by hydrostatic pressure influence, and conventional anti-sinking plate is through steel pipe and jacket bottom structure connection, and this part has transmitted the load that the seat of the vast majority produced in the seat bottom in-process, takes place still water crushing deformation very easily.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an anti-sinking plate structure which can be obliquely fixed on a jacket.

In order to solve the technical problems, the utility model provides a deep water jacket anti-sinking plate suitable for complex seabed topography, which comprises an anti-sinking plate frame, wherein an anti-sinking plate bottom plate is arranged on the bottom surface of the anti-sinking plate frame, a plurality of anti-sinking plate laying beams are fixed in the anti-sinking plate frame at intervals, a plurality of anti-sinking plate upright posts with different heights are fixed on the top surface of the anti-sinking plate frame, anti-sinking plate diagonal braces are further arranged between the anti-sinking plate upright posts and the anti-sinking plate frame, and the anti-sinking plate frame is obliquely fixed at the bottom of the jacket through the anti-sinking plate upright posts and the anti-sinking plate diagonal braces.

According to a preferred embodiment of the utility model, the pipe walls of the anti-sinking plate upright post and the anti-sinking plate diagonal bracing are provided with still water crushing holes.

According to a preferred embodiment of the utility model, the anti-sinking plate upright post supporting plates are welded at the connecting positions of the anti-sinking plate frame and the anti-sinking plate upright post and the anti-sinking plate diagonal braces.

According to a preferred embodiment of the utility model, the plurality of anti-settling plates are arranged in parallel between the laying beams.

According to a preferred embodiment of the utility model, the cross-sectional area of the anti-settling plate upright and the anti-settling plate diagonal brace are both larger than the cross-sectional area of the anti-settling plate frame.

According to a preferred embodiment of the utility model, the anti-settling plate frame consists of a beam structure.

According to a preferred embodiment of the utility model, the anti-sinking plate upright post and the anti-sinking plate diagonal brace are both of steel pipe structures.

The utility model has the technical effects that:

1. according to the deep water jacket anti-sinking plate suitable for the complex submarine topography, the plurality of anti-sinking plate stand columns with different heights are fixed on the top surface of the anti-sinking plate frame, the height of each anti-sinking plate stand column presents a trend, the anti-sinking plate diagonal bracing is further arranged between each anti-sinking plate stand column and the anti-sinking plate frame, and the anti-sinking plate frame is obliquely fixed on the bottom of the jacket through the anti-sinking plate stand column and the anti-sinking plate diagonal bracing, so that the anti-sinking plate structure is obliquely fixed on the jacket.

2. According to the deep water jacket anti-sinking plate suitable for the complex submarine topography, the anti-sinking plate is designed to be inclined, inclined struts are added between the anti-sinking plate frame and the upright posts, water is filled into the inclined struts of the anti-sinking plate and the upright posts, adaptability of the anti-sinking plate to the complex submarine topography is improved, anti-sliding capacity of the anti-sinking plate is improved, lateral stability of the anti-sinking plate frame is improved, the number of supporting connection between the anti-sinking plate and the jacket is optimized, and hydrostatic pressure resistance of the anti-sinking plate structure is improved.

Drawings

FIG. 1 is a side view of a deep water jacket anti-heave plate suitable for use in complex seafloor topography of the present utility model;

fig. 2 is a top view of a deep water jacket anti-settling plate suitable for use in complex seafloor topography according to the present utility model.

Reference numerals: 1-a jacket; 2-an anti-sinking plate frame; 3-a bottom plate of the anti-sinking plate; 4-an anti-sinking plate upright post; 5-still water crushing holes; 6-auxiliary beams of the anti-sinking plate; 7-an anti-sinking plate upright post supporting plate; 8-anti-sinking plate diagonal bracing.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model, so that those skilled in the art may better understand the utility model and practice it.

As shown in fig. 1 to 2, a deep water jacket anti-sinking plate suitable for complicated submarine topography comprises an anti-sinking plate frame 2, an anti-sinking plate bottom plate 3 is installed on the bottom surface of the anti-sinking plate frame 2, a plurality of anti-sinking plate laying beams 6 are fixed in the anti-sinking plate frame 2 at intervals, a plurality of anti-sinking plate upright posts 4 with different heights are fixed on the top surface of the anti-sinking plate frame 2, an anti-sinking plate diagonal bracing 8 is further arranged between the anti-sinking plate upright posts 4 and the anti-sinking plate frame 2, and the anti-sinking plate frame 2 is obliquely fixed on the bottom of the jacket 1 through the anti-sinking plate upright posts 4 and the anti-sinking plate diagonal bracing 8.

As shown in fig. 1 and 2, the bottom of the anti-sinking plate is connected with the bottom of the jacket 1 through an anti-sinking plate upright post 4 and an anti-sinking plate diagonal brace 8, the anti-sinking plate consists of an anti-sinking plate frame 2 and an anti-sinking plate bottom plate 3 arranged at the bottom of the anti-sinking plate frame 2, the anti-sinking plate bottom plate 3 is in contact with the mud surface of the seabed, in order to provide a larger contact area, the area of the anti-sinking plate bottom plate 3 is large, the acting force of the seabed on the anti-sinking plate is mainly born by the anti-sinking plate frame 2, and as the plate structure is easily deformed and damaged by external force, a certain amount of anti-sinking plate auxiliary beams 6 are welded in the anti-sinking plate frame 2 to provide support for the anti-sinking plate bottom plate 3; the force born by the anti-sinking plate frame 2 is transferred to the jacket 1 through the anti-sinking plate upright post 4 and the anti-sinking plate diagonal brace 8, and the anti-sinking plate upright post 4 and the anti-sinking plate diagonal brace 8 are of a tube structure, the cross section of the tube structure is larger than the cross section area of the beam, so that the anti-sinking plate upright post supporting plate 7 is welded at the position where the anti-sinking plate frame 2 is connected with the anti-sinking plate upright post 4 and the anti-sinking plate diagonal brace 8, and the force can be better transferred between the anti-sinking plate upright post 4 and the anti-sinking plate diagonal brace 8 and the anti-sinking plate frame 2. The anti-sinking plate upright post 4 and the anti-sinking plate diagonal bracing 8 are of closed circular tube structures, can be subjected to the effect of hydrostatic pressure in water, are easy to collapse by the hydrostatic pressure when the water depth is large, are commonly called hydrostatic crushing, and in order to prevent the hydrostatic crushing, the pipe walls of the anti-sinking plate upright post 4 and the anti-sinking plate diagonal bracing 8 are provided with hydrostatic crushing holes 5, so that the pressure inside and outside the pipe is the same.

The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.

Claims (7)

1. The utility model provides a deep water jacket prevents heavy board suitable for complicated seabed topography, its characterized in that, including preventing heavy board frame, prevent heavy board bottom plate is installed to the bottom surface of heavy board frame, prevent heavy board frame internal space is fixed with a plurality of heavy board auxiliary beams that prevent, the top surface of heavy board frame is fixed with the heavy board stand that prevents of a plurality of not co-altitude, prevent still being provided with between heavy board stand and the heavy board frame and prevent heavy board bracing, prevent heavy board frame and pass through prevent heavy board stand and prevent heavy board bracing slope and be fixed in the bottom of jacket.

2. The deep water jacket anti-sinking plate suitable for the complex seafloor topography of claim 1, wherein the wall of the anti-sinking plate upright post and the wall of the anti-sinking plate diagonal brace are both provided with still water crushing holes.

3. The deep water jacket anti-sinking plate suitable for the complex seafloor topography of claim 1, wherein anti-sinking plate upright post supporting plates are welded at the positions where the anti-sinking plate frame is connected with the anti-sinking plate upright posts and the anti-sinking plate diagonal braces.

4. The deep water jacket anti-sinking plate suitable for complex seafloor topography of claim 1, wherein a plurality of anti-sinking plate beams are arranged in parallel.

5. The deep water jacket anti-settling plate for complex seafloor topography of claim 1, wherein the anti-settling plate posts and anti-settling plate diagonal braces each have a cross-sectional area greater than the cross-sectional area of the anti-settling plate frame.

6. The deep water jacket anti-settling plate for complex seafloor topography of claim 1, wherein the anti-settling plate frame is comprised of a beam structure.

7. The deep water jacket anti-sinking plate suitable for the complex seafloor topography of claim 1, wherein the anti-sinking plate upright post and the anti-sinking plate diagonal brace are both of steel pipe structures.