CN219406807U - Filling type gravity anchor - Google Patents

Abstract

The utility model discloses a filling type gravity anchor, which comprises a gravity anchor body, wherein the gravity anchor body comprises a cylinder, a plurality of anti-sinking plates are fixed at the bottom of the outer wall of the cylinder, the filling type gravity anchor is arranged on the seabed of a near-shore section, broken stones are filled in the filling type gravity anchor, and the broken stones are directly contacted with the seabed to generate friction force for resisting mooring force. The bottom of the cylinder of the filling gravity anchor is provided with a plurality of mooring bollards for providing mooring points for the construction ship. Compared with the traditional gravity anchor, the filling gravity anchor has a simple structure, can be installed and removed only by using an anchor boat in a shallow water and anchoring limiting area of a near shore section which cannot be accessed by a large crane ship, reduces construction cost, meets the requirement of providing mooring points and stable and reliable mooring force for construction operation ships under the shallow water condition, and has remarkable comprehensive economic benefit.

Description

Filling type gravity anchor

Technical Field

The utility model relates to a filling type gravity anchor, in particular to a filling type gravity anchor for mooring ship operation in a shallow water and anchoring limited area of a near shore section.

Background

With the development of national economy, the energy demand increases year by year, the number of oil and gas pipelines in the ocean increases year by year, the construction ship in the ocean is limited in anchoring in the areas, the pipelines need to be avoided when anchoring, and under the limiting condition, a traditional large-holding-power anchor or a Hall anchor sometimes cannot find a landing anchor point which can provide enough holding power. For the traditional gravity anchor, because the self weight is large, a large crane ship is generally required to be used for construction operation, but in a shallow water area limited by anchoring, the large crane ship cannot be anchored for stabilizing the ship, and the shallow water area is not enough to be submerged, so the traditional gravity anchor is not suitable for the area, and under the condition, the filling gravity anchor which has a simple structure and light weight and does not need the crane ship is generated.

Disclosure of Invention

The utility model aims to provide a filled gravity anchor which is suitable for shallow water in a near shore section and is used for anchoring a limited area, so that dependence on a large crane ship is avoided, the construction cost is reduced, a mooring point of a construction operation ship is provided, and stable and reliable mooring force is provided.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a filled gravity anchor comprising a gravity anchor body comprising a barrel, a mooring post and an anti-settling plate;

the barrel is of a cylindrical steel structure with the bottom and the top both open, and a plurality of groups of mooring posts are uniformly arranged at the bottom of the outer wall of the barrel along the circumferential direction and are used for providing mooring points for a construction ship;

and a plurality of groups of anti-settling plates are uniformly arranged at the bottom of the outer wall of the cylinder body along the circumferential direction, so that the stability of the gravity anchor base is improved, and uneven settlement is prevented. .

Preferably, the top of the anti-sinking plate is embedded into the outer wall of the cylinder body to form a fixing part, and the bottom of the anti-sinking plate is exposed to increase the contact area between the gravity anchor and the seabed, so that the friction force resisting the mooring force is increased.

Preferably, the bollards are arranged at equal intervals along the circumferential direction of the cylinder.

Preferably, the anti-sinking plates are arranged at equal intervals along the circumferential direction of the cylinder body.

Preferably, crushed stones are filled in the cylinder, and directly contact with the seabed to directly resist mooring force.

Preferably, the surface of the gravity anchor body is provided with an anti-corrosion coating and/or a built-in sacrificial anode, so that the gravity anchor body meets the service life requirements in the marine environment.

Compared with the prior art, the utility model has the beneficial technical effects that:

1. the filled gravity anchor is arranged on the seabed of the shallow water area, and the construction ship is tethered through the mooring post. The filled gravity anchor is used for resisting an upward component in the mooring force by subtracting the buoyancy of the sea water from the gravity of the filled gravity anchor; the cylinder is filled with crushed stones, the crushed stones are in direct contact with the seabed, and the gravity anchor and the crushed stones are used for subtracting the buoyancy of the sea water by means of self gravity to generate friction force to resist the horizontal component in mooring force. Compared with the traditional gravity anchor, the filling gravity anchor has a simple structure, can be installed and removed only by using an anchor boat in a shallow water anchoring limiting area which cannot be accessed by a large crane ship, reduces construction cost, and meets the requirement of providing mooring points and stable and reliable mooring force for construction operation ships under shallow water conditions.

2. Various anti-corrosion measures are adopted on the gravity anchor main body, so that the anti-corrosion capacity of the gravity anchor main body is remarkably improved, and the gravity anchor main body meets the service life requirements in the marine environment.

3. The filling gravity anchors are continuously arranged along the route at intervals, and when the ship advances along the route, the filling gravity anchors can be moored to different filling gravity anchors, so that the mooring requirement of the construction ship operation is met.

In summary, the utility model can provide mooring points and stable and reliable mooring forces for construction operation ships in shallow water and anchoring limited areas at near shore without using a crane ship.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a filled gravity anchor according to the present utility model.

FIG. 2 is a schematic illustration of a filled gravity anchor marine transportation;

FIG. 3 is a schematic illustration of a filled gravity anchor binding float bag floating in water;

FIG. 4 is a schematic illustration of a filled gravity anchor marine tug;

FIG. 5 is a view of the filled gravity anchor sinking to the seabed after releasing the buoyancy bag;

FIG. 6 is a schematic illustration of a filled gravity anchor injecting crushed stone into place;

reference numerals: 1. a gravity anchor body; 2. a cylinder; 3. mooring posts; 4. an anti-sinking plate; 5. mooring points.

Description of the embodiments

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to fig. 1, a filled gravity anchor according to the present utility model includes a gravity anchor body 1, wherein the gravity anchor body 1 includes a barrel 2, a mooring post 3, and an anti-sinking plate 4. The cylinder body 2 is of a cylindrical steel structure with the bottom and the top both open, and a plurality of groups of mooring posts 3 are uniformly arranged at the bottom of the outer wall of the cylinder body 2 along the circumferential direction and are used for providing mooring points for the construction ship. The bottom of the outer wall of the cylinder body 2 is uniformly provided with a plurality of groups of anti-sinking plates 4 along the circumferential direction, so that the stability of the gravity anchor base is improved, and uneven sinking is prevented. The cylinder 2 has a diameter of 8m, a wall thickness of 50mm and a height of 3.5m, and after the mooring post 2 and the anti-sinking plate 3 are contained, the weight of the gravity anchor body 1 in the air is 43 tons, and the weight in the water is about 37 tons. The inner volume of the cylinder 1 is about 152m, crushed stone is injected, the density of the crushed stone is 1.7 tons/m, the weight of the crushed stone in the air is about 158 tons, the weight of the crushed stone in the water is about 97 tons, the weight of the whole water is about 134 tons, the friction coefficient in the horizontal direction is 0.3, and the horizontal mooring force can be provided by a single filling type gravity anchor not less than 40 tons.

Referring to fig. 2-6, the offshore installation process of the filled gravity anchor is reflected: firstly, loading a barge on a wharf by a gravity anchor body 1, then transporting the gravity anchor body to a construction site, and dragging the gravity anchor body 1 to water by using an inclined slideway arranged at the tail part of the barge; then, the gravity anchor body 1 is sunk to the seabed, a diver binds an inflatable floating bag on the mooring post 3, the gravity anchor body 1 floats to the sea surface under the buoyancy action of the floating bag, the anchor boat pulls the gravity anchor body 1 to a designed position, the diver releases the floating bag, and the gravity anchor body 1 sinks to a preset position; then, crushed stones are filled in the barrel 2 and directly contact with the seabed, friction force is generated under the action of gravity to resist the mooring horizontal force, the gravity anchor arrangement is completed, and proper mooring points 5 are selected according to the needs during use.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (7)

1. A filled gravity anchor, which comprises a gravity anchor main body (1), and is characterized in that the gravity anchor main body (1) comprises a cylinder body (2), a mooring post (3) and an anti-sinking plate (4);

the barrel body (2) is of a cylindrical steel structure with the bottom and the top both open, and a plurality of groups of mooring posts (3) are uniformly arranged at the bottom of the outer wall of the barrel body (2) along the circumferential direction and are used for providing mooring points (5) for a construction ship;

a plurality of groups of anti-settling plates (4) are uniformly arranged at the bottom of the outer wall of the cylinder body (2) along the circumferential direction, so that the stability of the gravity anchor base is improved, and uneven settlement is prevented.

2. A filled gravity anchor according to claim 1, wherein: the mooring bollard (3) adopts a cross structure, so that the shearing bearing capacity of the mooring force horizontal component can be obviously increased.

3. A filled gravity anchor according to claim 1, wherein: one end of the anti-sinking plate (4) is embedded into the outer wall of the cylinder body (2) to form a fixing part, and the other end of the anti-sinking plate (4) is exposed to increase the contact area between the gravity anchor and the seabed, so that the friction force resisting the mooring force is increased.

4. A filled gravity anchor according to claim 1, wherein: the mooring posts (3) are arranged at equal intervals along the circumferential direction of the cylinder body (2).

5. A filled gravity anchor according to claim 1, wherein: the anti-sinking plates (4) are arranged at equal intervals along the circumferential direction of the cylinder body (2).

6. A filled gravity anchor according to claim 1, wherein: crushed stones are filled in the cylinder (2), and directly contact with the seabed to directly resist mooring force.

7. A filled gravity anchor according to claim 1, wherein: the surface of the gravity anchor main body (1) is provided with an anti-corrosion coating and/or a built-in sacrificial anode, so that the gravity anchor main body (1) meets the service life requirements in the marine environment.