CN212248329U

CN212248329U - Gravity type cylindrical foundation

Info

Publication number: CN212248329U
Application number: CN202021243737.3U
Authority: CN
Inventors: 张健翔; 赵迎九; 王小合; 孔德煌; 贺广零; 陈建征; 王宗尧; 崔文涛; 闵巧玲
Original assignee: Huadian Heavy Industries Co Ltd
Current assignee: Huadian Heavy Industries Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-12-29
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to a section of thick bamboo type basis technical field, concretely relates to gravity type section of thick bamboo type basis. The gravity type cylindrical foundation includes: the main supporting part is suitable for supporting an object to be supported; the bottom plate is fixedly arranged at the bottom of the main supporting part; and the upturned cylinder skirt is at least partially arranged around the upper surface of the bottom plate and defines a weight accommodating cavity together with the bottom plate. The utility model provides a gravity type shell type basis through changing structural style, cancels skirt lower hem and increases the formula skirt that turns over on, has avoided skirt lower hem to interfere with the mud face promptly and the unable condition emergence of floating the fortune into the field that causes can reach better bearing capacity and antidumping ability again.

Description

Gravity type cylindrical foundation

Technical Field

The utility model relates to a section of thick bamboo type basis technical field, concretely relates to gravity type section of thick bamboo type basis.

Background

At the present stage, the development and construction of domestic offshore wind power gradually enters a motorway, a plurality of coastal provinces in China begin to develop the construction of offshore wind power vigorously, and a part of province offshore wind power projects need to be constructed in a water depth extremely shallow state below the average water depth of 3m, a ship can only enter a construction field area while being wet and needs to be constructed on a beach, although the ship can adopt a beach construction mode, the ship is used for supporting a cylindrical foundation of wind power equipment, particularly a traditional cylindrical foundation, and due to the fact that a cylindrical skirt is high, if the ship is transported in a floating mode, the lower hem of the cylindrical skirt is interfered with a mud surface, and therefore the construction of the wind power equipment in the floating mode cannot be carried out; meanwhile, the problems of shallow soil covering layer and rock stratum at the lower part exist in offshore wind power geology of partial areas, the traditional high-pile bearing platform foundation scheme is mature for solving the problem of the rock stratum, but the problem of extremely shallow water depth is difficult to solve, and if the scheme of erecting a trestle is adopted for pile sinking and rock embedding construction, the cost is very high. Therefore, for the cylindrical foundation, there is no good solution at present under the construction conditions that the construction water depth is extremely shallow and the stratum is in the lower part of the geology.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art defect that the shell type foundation is difficult to be under the operating mode that the construction depth of water is extremely shallow and the geology lower part has the stratum to a gravity type shell type foundation that can be under the operating mode that the construction depth of water is extremely shallow and the geology lower part has the stratum can be under construction smoothly is provided.

In order to solve the technical problem, the utility model provides a pair of gravity type cartridge form basis, include:

the main supporting part is suitable for supporting an object to be supported;

the bottom plate is fixedly arranged at the bottom of the main supporting part;

and the upturned cylinder skirt is at least partially arranged around the upper surface of the bottom plate and defines a weight accommodating cavity together with the bottom plate.

Further, the flip-up skirt is disposed at least partially around the outer edge of the bottom panel.

Further, the flip-up type cylinder skirt is arranged around the outer edge of the bottom plate in a circle.

Further, the flip-up skirt is vertically arranged on the upper surface of the bottom plate.

Furthermore, the bottom plate is also provided with at least one auxiliary supporting part, and the auxiliary supporting part supports the main supporting part.

Further, the bottom plate bottom still is provided with at least one rock claw, the rock claw is kept away from bottom plate one end is the closed angle setting.

Further, the height of the upturning type cylindrical skirt is greater than or equal to the water depth of the installation position.

Further, the height of the upturning type cylindrical skirt is more than or equal to 3 m.

Furthermore, the bottom plate is arranged in a circular shape, and the diameter range is [35m, 40m ].

Further, the upper end of the main supporting part is also provided with a mounting platform.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a gravity type shell type basis through changing structural style, cancels skirt lower hem and increases the formula skirt that turns over on, has avoided skirt lower hem to interfere with the mud face promptly and the unable condition emergence of floating the fortune into the field that causes can reach better bearing capacity and antidumping ability again.

2. The utility model provides a gravity type shell type basis, the bottom plate can bear on the one hand the main tributary supporting part and install the weight of treating the support on the main tributary supporting part, on the other hand can be through with the surface of water contact, will gravity type shell type basis suspends on the surface of water, and gravity type shell type basis sinks into submarine back, makes bottom plate and silt face direct contact, for the steady placing of main tributary supporting part provides the support.

3. The utility model provides a gravity type shell type basis be provided with the formula of turning over skirt on the bottom plate, make the formula of turning over skirt with the bottom plate is injectd the heavy object jointly and is held the chamber, thereby gravity type shell type basis is sunken into submarine back, makes bottom plate and silt face direct contact are further right the heavy object holds the intracavity and fills the heavy object, in order to increase the bearing capacity on gravity type shell type basis improves the holding down force and the shock resistance to the bottom plate for the main tributary supporting part has higher antidumping ability.

4. The utility model provides a gravity type cartridge type basis the bottom plate bottom is provided with the rock claw, the rock claw can stretch into silt face below, improves the formula of grabbing ground power on cartridge type basis, the rock claw is kept away from bottom plate one end is the closed angle setting, and is convenient the rock claw can be smooth deepening under the pressure effect on gravity type cartridge type basis inside the silt face.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a gravity type cylindrical foundation of the present invention;

fig. 2 is a schematic view of a gravity type cylindrical foundation of the present invention in a use state;

fig. 3 is a schematic view of a gravity type cylindrical foundation of the present invention;

fig. 4 is the utility model discloses gravity type shell type foundation construction schematic diagram.

Description of reference numerals:

10-water surface, 20-gravity type cylindrical foundation, 21-bottom plate, 22-upturning type cylindrical skirt, 23-main supporting part, 24-auxiliary supporting part, 25-installation platform, 26-rock claw, 30-silt surface, 40-heavy object and 50-ship body.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, 2, 3 and 4, the present embodiment provides a gravity type cylindrical foundation, including:

a main support 23 adapted to support an object to be supported;

a bottom plate 21 fixedly arranged at the bottom of the main supporting part 23;

and the flip-up type cylinder skirt 22 is at least partially arranged around the upper surface of the bottom plate 21 and defines a weight accommodating cavity together with the bottom plate 21.

The bottom plate 21 is constructed in a plate-shaped structure capable of bearing the weight of the main supporting part 23 and the object to be supported mounted on the main supporting part 23 on one hand, and suspending the gravity type cylindrical foundation above the water surface 10 by contacting with the water surface 10 on the other hand, and after the gravity type cylindrical foundation is submerged into the water bottom, making the bottom plate 21 directly contact with the sediment surface 30, thereby providing support for the stable placement of the main supporting part 23.

Furthermore, the utility model provides a gravity type shell mould basis, it is in be provided with flip-up skirt 22 on the bottom plate 21, make flip-up skirt 22 with the bottom plate 21 is injectd the heavy object jointly and is held the chamber, thereby gravity type shell mould basis sinks into submarine back, makes bottom plate 21 and silt face 30 direct contact, it is further right the heavy object holds intracavity and fills out heavy object 40, in order to increase gravity type shell mould basis's bearing capacity improves pushing down force and shock resistance to bottom plate 21 for main tributary supporting part 23 has higher antidumping ability.

The utility model provides a gravity type shell mould basis adopts the method of cancellation skirt lower hem, has avoided traditional shell mould basis under the extremely shallow operating mode of depth of water, because the unable condition of floating and advancing that the skirt lower hem and mud face interfere and cause. Simultaneously, because the bearing capacity on traditional shell type basis is whole from the interact of shell skirt and soil body, in order to avoid causing the not enough problem of shell type basis bearing capacity because of canceling shell skirt lower hem, the utility model provides a gravity type shell type basis is provided with flip-up shell skirt 22 on bottom plate 21, makes flip-up shell skirt 22 with bottom plate 21 prescribes a limit to the heavy object jointly and holds the chamber, and the method of concreting or throwing the stone in the heavy object that forms holds the chamber carries out the ballast to reach the effect that increases basic bearing capacity and antidumping, make the bearing capacity on basis provide by the upper portion ballast, reach the bearing capacity effect the same with traditional shell type basis. Therefore, the utility model provides a gravity type shell type basis through changing structural style, cancels skirt lower hem and increases the formula skirt that turns over on, has avoided skirt lower hem to interfere the condition emergence of the unable transportation by flotation approach that causes with the mud face promptly, can reach better bearing capacity and antidumping ability again.

Preferably, in concrete work progress, the utility model provides a gravity type shell type basis, because do not have the interference of skirt lower hem, in the extremely shallow waters below the average depth of water 3m, can take one's place gravity type shell type basis transportation approach in tide, gravity type shell type basis itself is similar to a shallow draft barge, can float on the surface of water to can be under the exogenic action, sink to the silt surface, the unable problem of being under construction of extremely shallow waters shell type basis has been solved to this basic form.

Preferably, the object to be supported is a wind power device.

Specifically, the flip-up skirt 22 is disposed at least partially around the outer edge of the bottom panel 21.

The flip-up skirt 22 is disposed on the upper surface of the bottom plate 21, and as a preferred implementation form, the flip-up skirt 22 may be disposed at least partially around the outer edge of the bottom plate 21, so as to increase the accommodating volume of the weight accommodating cavity and increase the bearing capacity of the gravity type cylinder foundation.

Specifically, the flip-up skirt 22 is disposed around the outer periphery of the bottom plate 21.

The upward-turning type cylindrical skirt 22 is arranged on the upper surface of the bottom plate 21, and as a preferred implementation form, the upward-turning type cylindrical skirt 22 is arranged around the outer edge of the bottom plate 21 for completely enclosing the bottom plate 21, so that the accommodating volume of the weight accommodating cavity is increased, and simultaneously, the upward-turning type cylindrical skirt 22 and the bottom plate 21 are constructed into a structure form of a shallow draft barge, so that the shallow draft barge can float on the water conveniently, and the transfer capacity of the gravity type cylindrical foundation on the water surface is increased.

Specifically, the flip-up skirt 22 is vertically disposed on the upper surface of the bottom plate 21.

As one of the realization forms of the utility model, through will upturning formula skirt 22 set up perpendicularly in bottom plate 21 upper surface makes the convenient construction of gravity type shell type basis is made, is convenient for transport.

As a modification, the flip-up skirt 22 may be obliquely disposed on the upper surface of the bottom plate 21, and preferably, the flip-up skirt 22 is disposed at an obtuse angle with the upper surface of the bottom plate 21, so as to increase the accommodating volume of the weight accommodating cavity and facilitate the gravity type cylinder foundation to float on the water surface. Preferably, the bottom plate 21 is circular, in this case, the flip-up skirt 22 is obliquely disposed on the upper surface of the bottom plate 21, and further forms a truncated cone-shaped weight accommodating cavity with the bottom plate 21.

Preferably, a reinforcing rib is further arranged between the upturning type cylindrical skirt 22 and the bottom plate 21, so that the connection firmness of the upturning type cylindrical skirt 22 is improved, a heavy object in a heavy object accommodating cavity is conveniently accommodated, and scattering is avoided.

Specifically, at least one auxiliary supporting portion 24 is further disposed on the bottom plate 21, and the auxiliary supporting portion 24 supports the main supporting portion 23.

The auxiliary supporting part 24 and the main supporting part 23 are fixedly arranged on the bottom plate 21, so that the main supporting part 23 is strengthened, the installation firmness of the object to be supported is improved, the inclination is avoided, and the anti-overturning capacity is improved.

Specifically, the bottom of the bottom plate 21 is further provided with at least one rock claw 26, and one end of the rock claw 26, which is far away from the bottom plate 21, is arranged in a sharp angle.

When the bottom plate 21 is provided with the rock claw 26, the rock claw 26 can stretch into the lower part of the sediment surface 30, and the ground gripping force of the force type cylindrical foundation is improved. Preferably, one end of the rock claw 26, which is far away from the bottom plate 21, is provided with a sharp angle, so that the rock claw 26 can smoothly go deep into the sediment surface 30 under the pressure action of the gravity type cylindrical foundation.

Specifically, the height of the flip-up skirt 22 is greater than or equal to the water depth of the installation position.

Specifically, the height of the flip-up skirt 22 is greater than or equal to 3 m.

Because the utility model provides a gravity type shell type basis is mainly applied to the extremely shallow waters below the average depth of water 3m, works as the depth of water of the 22 high more than or equal to mounted position of formula skirt that turns up, especially when the 22 high more than or equal to 3m of formula skirt that turns up, can guarantee that the heavy object on gravity type shell type basis holds the chamber upper surface and is located on the surface of water, holds the intracavity at the heavy object and drops into the heavy object, and the volume that drops into the heavy object is highly relevant with the formula skirt 22 that turns up to can increase the bearing on gravity type shell type basis, improve the antidumping ability.

As a variation, the height of the flip-up skirt 22 may also be smaller than the depth of water at the installation position, and preferably, the height of the flip-up skirt 22 is smaller than 3m, so that the weight accommodating cavity of the gravity type cylindrical foundation can be completely submerged below the water surface, seawater can flow into the weight gap of the weight accommodating cavity, the bearing capacity of the gravity type cylindrical foundation is increased, and the anti-overturning capacity is improved.

Specifically, the bottom plate 21 is arranged in a circular shape, and the diameter range is [35m, 40m ].

Meanwhile, in order to improve the floating capacity of the gravity type cylindrical foundation on the water surface, the area of the bottom plate 21 needs to be larger than the cross-sectional area of the main supporting part 23, thereby ensuring the stability and the wind and wave resistance. Preferably, the design size of the gravity type cylindrical foundation needs to be selected after load accounting is performed according to specific working conditions, and details are not repeated herein.

Specifically, the upper end of the main supporting part 23 is further provided with a mounting platform 25. The mounting platform 25 can facilitate the installation of the support to be treated by the constructor.

The utility model provides a gravity type cartridge type basis, it is in concrete work progress, the construction scheme as follows:

after the gravity type cylindrical foundation is manufactured, the gravity type cylindrical foundation is transported to a deep position of the field water depth by using a barge and is hoisted into the water by hoisting equipment. Because the bottom plate 21 of the gravity type cylindrical foundation is provided with the upward-turning cylindrical skirt 22 around the outer edge of the small surface, a ship-like structure is formed, and the gravity type cylindrical foundation has the capability of launching and self-floating.

Because the size of the cylinder base is large, the diameter is about 35-40 m, about 1000t of buoyancy can be generated when 1m of draft is taken, and the total weight of the whole cylinder base is about 1200t, the gravity type cylinder base can float on the water surface 10 under the condition that about 2m of draft is deep, and the gravity type cylinder base floats into a construction area through the buoyancy effect.

After entering a construction area, positioning is carried out by using a floating crane, and water is injected into a weight accommodating cavity defined by the bottom plate 21 and the upturning cylindrical skirt 22 together, so that the gravity type cylindrical foundation sinks until the gravity type cylindrical foundation is attached to a sediment surface 30. As a preferred implementation form, when the bottom of the bottom plate 21 is provided with the rock claws 26, the rock claws 26 extend below the sediment surface 30, so that the ground holding force of the force-type cylindrical foundation is improved.

After the gravity type cylindrical foundation is sunk, the weight 40 is filled in the weight accommodating cavity through the weight 40 carried on the ship body 50, preferably, a concrete mixer ship or a sand throwing ship can be used for pouring concrete or throwing stones to weigh the cylindrical foundation so as to achieve the effects of increasing the bearing capacity of the foundation and resisting overturning.

The foundation form has the advantages of few construction procedures, simple process flow, easy operation and low construction risk.

The other foundation forms can not be constructed in the sea area within 3m of water depth, the foundation can be transported to the position of the machine position with limited water depth like a shallow draft barge in a floating way, and the construction problem of the extremely shallow water area is solved.

The steel structure consumption of the foundation form is less than that of other foundation forms, the steel structure consumption is lower than that of other foundation forms from the structure consumption to the construction cost, and the economy is high.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A gravity-fed bucket foundation comprising:

a main support (23) adapted to support an object to be supported;

the bottom plate (21) is fixedly arranged at the bottom of the main supporting part (23);

and the flip-up type cylinder skirt (22) is at least partially arranged around the upper surface of the bottom plate (21) and defines a weight accommodating cavity together with the bottom plate (21).

2. A gravity cylinder footing according to claim 1 wherein said flip-up skirt (22) is disposed at least partially around the outer edge of said bottom plate (21).

3. A gravity cylinder foundation according to claim 2 wherein said flip-up skirt (22) is disposed around the outer edge of said bottom plate (21).

4. A gravity cylinder foundation according to claim 3 wherein said flip-up skirt (22) is vertically disposed on the upper surface of said bottom plate (21).

5. A gravity cylinder foundation according to any one of claims 1-4, wherein said bottom plate (21) is further provided with at least one auxiliary support (24), said auxiliary support (24) supporting said main support (23).

6. A gravity cylinder foundation according to claim 5, wherein the bottom of the bottom plate (21) is further provided with at least one claw (26), and the end of the claw (26) remote from the bottom plate (21) is pointed.

7. A gravity cylinder foundation according to any one of claims 1 to 4 wherein the height of the upturned skirt (22) is greater than or equal to the depth of water at the installation site.

8. A gravity cylinder foundation according to claim 7 wherein the upturned skirt (22) is 3m or more in height.

9. A gravity cylinder foundation according to claim 7, wherein the bottom plate (21) is circular in shape with a diameter in the range of [35m, 40m ].

10. A gravity cylinder foundation according to any one of claims 1 to 4 wherein the upper end of the main support (23) is further provided with a mounting platform (25).