CN215211130U - Pre-tensioned pile anchor combined foundation for shallow covering layer seabed - Google Patents
Pre-tensioned pile anchor combined foundation for shallow covering layer seabed Download PDFInfo
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- CN215211130U CN215211130U CN202120110128.9U CN202120110128U CN215211130U CN 215211130 U CN215211130 U CN 215211130U CN 202120110128 U CN202120110128 U CN 202120110128U CN 215211130 U CN215211130 U CN 215211130U
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Abstract
The utility model discloses a pre-tensioned pile anchor combination foundation for shallow covering layer seabed, which comprises a fan, a tower cylinder and a pile foundation which are sequentially connected from top to bottom, wherein the bottom of the pile foundation is vertically embedded into a soft soil layer and is in contact with a rock layer; the pile foundation lateral wall passes through connecting device hoop interval fixedly connected with a plurality of stock, and the other end of every stock passes soft soil layer and imbeds in the rock stratum with embedded rock anchor end fixed connection. The utility model discloses in, the vertical power that the pile foundation bore is mainly undertaken by the frictional force of topsoil and the ground layer at the bottom of the stake, and horizontal load then undertakes through stake week soil body, stock and rock-socketed anchor end, and bearing capacity is stable, and the construction and the installation of being convenient for, and have great rigidity, have guaranteed the good stability of offshore fan superstructure.
Description
Technical Field
The utility model relates to an offshore wind turbine foundation erection equipment technical field, concretely relates to pretension stake anchor combination basis for shallow overburden seabed.
Background
In recent years, the development of renewable energy has been receiving increasing attention in the face of increasingly severe environmental and resource problems. The traditional fossil energy in the energy consumption of China has large proportion, low energy utilization efficiency and large waste and pollution, so the development of novel renewable energy is particularly urgent, wherein the influence of offshore wind power on the environment is small, the resource utilization rate is high, the technology is relatively mature, and the development is rapid in recent years.
At present, pile foundation foundations are widely adopted in offshore wind turbine foundation forms, and compared with other offshore wind turbine foundation forms, the pile foundation has the advantages of being simple in structure, clear in load transfer mode, convenient for industrial production and the like. The pile foundation is mainly applied to the sea condition environment of deep soil layers, and the balance of upper load is realized through large size and long burial depth. However, in part of offshore wind power plants in China, geological conditions are complex, the buried depth of the base rock surface is shallow and the foundation rock surface has large fluctuation, and most of covering soil is mucky soil and soft clay, so that the requirement on the bearing performance of an offshore wind turbine pile foundation cannot be met. If adopt the design of socketed pile, the construction installation degree of difficulty is great, and the cost also can increase by a wide margin.
Based on the situation, the utility model provides a pretension stake anchor combination basis for shallow overburden seabed can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To exist not enough among the prior art, the utility model aims to provide a pretension stake anchor combination basis for shallow overburden seabed to soft holding power layer, shallow overburden geological conditions, provides the slope to the pulling force through the stock of stake week and the rock-socketed anchor end, the load of balanced fan upper portion transmission need not to develop the major diameter and inlays the rock pile foundation operation. The utility model discloses in, the vertical power that the pile foundation bore is mainly undertaken by the frictional force of topsoil and the ground layer at the bottom of the stake, and horizontal load then undertakes through the pile soil body all around, stock and rock-socketed anchor end.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a pre-tensioned pile anchor combined foundation for a shallow covering layer seabed comprises a fan, a tower cylinder and a pile foundation which are sequentially connected from top to bottom, wherein the bottom of the pile foundation is vertically embedded into a soft soil layer and is in contact with a rock layer; the pile foundation lateral wall passes through connecting device hoop interval fixedly connected with a plurality of stock, and the other end of every stock passes soft soil layer and imbeds in the rock stratum with embedded rock anchor end fixed connection.
As an optimal technical scheme of the utility model, every stock with contained angle between the pile foundation is the acute angle.
As an optimal technical scheme of the utility model, each stock with the pile foundation is central symmetrical arrangement for the central point.
As an optimal technical scheme of the utility model, connecting device including install in lantern ring on the pile foundation, be used for the connecting plate of fixed stock, be used for adjusting the tensioning equipment of stock prestressing force.
As an optimal technical scheme of the utility model, the pile foundation with through basic top flange fixed connection between the tower section of thick bamboo.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. compared with the prior art, the utility model discloses wider application scope has, and the construction installation of being convenient for.
2. The utility model discloses studied the offshore wind turbine combination basis of pile foundation plus stock, to the more shallow sea condition of basement rock buried depth, need not make the whole embedding basement rock face of pile foundation, but instead the stock of pile week provides the slope to the pulling force with the rock-socketed anchor end to this load and the marine environment load of balanced fan upper portion transmission.
3. The utility model discloses in, the vertical power that the pile foundation bore mainly undertakes through the frictional force of shallow layer soil and the ground layer at the bottom of the stake, and the horizontal load that it bore is balanced through the stock of stake week soil body counter-force and equidirectional and the pulling force of rock-socketed anchor end.
4. The utility model discloses well pile foundation has avoided whole embedding seabed bedrock, has increased horizontal bearing capacity and overall stability through increasing stock and embedding anchor end.
5. The utility model discloses a combination basis has assembled the advantage of two types of basis patterns of pile foundation and stock, and the pile foundation atress is simple, bearing capacity is stable, is convenient for be under construction and installation, and has great rigidity, has guaranteed the good stability of offshore wind turbine superstructure. Meanwhile, the anchor rod can be drilled into deep bedrock through the offshore drilling machine and anchored in the bedrock through grouting, the pile foundation level and the uplift bearing capacity are increased by the anchor rod and the rock-socketed anchoring end, the problem that a pile foundation needs to be embedded and fixed in a hard rock layer in a shallow soil layer sea condition is avoided, the construction difficulty and the engineering cost can be effectively reduced, and the structural safety of the offshore wind turbine is guaranteed.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is the anchor rod connecting device of the present invention.
In the figure: 1. the foundation comprises a foundation top flange 2, a connecting device 2-1, a lantern ring 2-2, a connecting plate 2-3, a tensioning device 3, a pile foundation 4, an anchor rod 5 and a rock-socketed anchoring end.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1, the pre-tensioned pile-anchor combined foundation for the seabed of the shallow covering layer mainly comprises five parts, namely a foundation top flange 1, a connecting device 2, a pile foundation 3, an anchor rod 4 and a rock-socketed anchoring end 5, and a schematic diagram for clearly showing the arrangement of the foundation structure through a front view and a top view. The foundation top flange 1 is used for fixing a fan tower cylinder, is fixed in a bolt or welding mode, transmits upper load and maintains the structural stability of the fan; the pile foundation 3 is a main stress facility, the vertical force borne by the pile foundation is transmitted to the soil body around the pile and the rock layer at the pile end, and the horizontal load is transmitted to the soil body and the anchor rod 4; the connecting device 2, the anchor rod 4 and the rock-socketed anchoring end 5 are auxiliary facilities of the fan combined foundation, and are used for keeping the pile foundation 3 and the upper structure thereof stable and bearing horizontal and vertical loads.
As shown in fig. 2, the utility model discloses a top view can observe stock 4 and the arrangement of rock-socketed anchor end 5, and 360 evenly distributed are followed to four stock 4 and rock-socketed anchor end 5 in fig. 2, can be according to the quantity of ocean current and the condition adjustment stock 4 of wind-force and connecting device 2's position in operating condition, ensure upper portion stable in structure.
As shown in fig. 3, the anchor rod connecting device of the present invention includes four parts: the anchor rod tensioning device comprises a lantern ring 2-1, a connecting plate 2-2 and a tensioning device 2-3, wherein the lantern ring 2-1 is installed on a pile foundation and connected with the connecting plate 2-2 and used for fixing the relative position of the anchor rod 4, the tensioning device 2-3 transmits load to the anchor rod 4 through a jack to apply prestress, and meanwhile, the length of the anchor rod 4 can be adjusted. In the actual construction process, in order to ensure the horizontal stress balance of the pile foundation 3, the two anchor rods 4 in opposite directions need to be simultaneously prestressed, so that the inclination of the pile foundation is prevented, and the prestress of the anchor rods in all directions is determined according to the actual engineering.
The utility model relates to a pretension stake anchor combination basis for shallow overburden seabed at construction in-process, at first drills to the rock layer through drilling equipment, implants stock 4 at the drilling position, and the embedding possesses the deep bed rock of higher bearing capacity, pours into the grouting material that excels in afterwards and fills the space, makes it form and inlays rock-socketed end 5 for bear the load of stock transmission. The pile foundation 3 is hoisted by using equipment and is inserted into a soft soil layer, and the bottom of the pile foundation is ensured to be in contact with a rock layer, so that the vertical compression-resistant bearing capacity of the pile foundation is improved. After the rock-socketed anchoring end 5 and the pile foundation 3 are installed, the anchor rod 4 is fixedly installed on the pile foundation 3 through the connecting device 2, the relative positions of the anchor rod and the pile foundation are adjusted, the prestress of the anchor rod is exerted by the symmetrically-distributed tensioning devices 2-3, the combined foundation can be guaranteed to function well, and the horizontal bearing capacity of a pile foundation is increased. When the tensioning device 2-3 is used, prestress is applied to the two anchor rods 4 in opposite directions, so that the horizontal stress balance of the pile foundation 3 is ensured, and the lateral inclination of a pile foundation is prevented. Finally, a tower drum of the offshore wind turbine is hoisted, the tower drum is aligned with the pile foundation 3, and the pile foundation 3 and the wind turbine tower drum are fixed together through the foundation top flange 1.
According to the description and the drawings of the present invention, it is easy for those skilled in the art to make or use the pre-tensioned pile-anchor combined foundation for the seabed with a shallow covering layer, and the positive effects described in the present invention can be produced.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; 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.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (5)
1. A pre-tensioned pile anchor combined foundation for a shallow covering layer seabed is characterized by comprising a fan, a tower cylinder and a pile foundation which are sequentially connected from top to bottom, wherein the bottom of the pile foundation is vertically embedded into a soft soil layer and is in contact with a rock layer; the pile foundation lateral wall passes through connecting device hoop interval fixedly connected with a plurality of stock, and the other end of every stock passes soft soil layer and imbeds in the rock stratum with embedded rock anchor end fixed connection.
2. The pre-tensioned pile anchor assembly foundation for the seabed of a shallow covering layer as claimed in claim 1, wherein: and an included angle between each anchor rod and the pile foundation is an acute angle.
3. The pre-tensioned pile anchor assembly foundation for the seabed of a shallow covering layer as claimed in claim 1, wherein: the anchor rods are arranged in a central symmetry mode by taking the pile foundation as a central point.
4. The pre-tensioned pile anchor assembly foundation for the seabed of a shallow covering layer as claimed in claim 1, wherein: the connecting device comprises a lantern ring arranged on the pile foundation, a connecting plate used for fixing the anchor rod and a tensioning device used for adjusting the prestress of the anchor rod.
5. The pre-tensioned pile anchor assembly foundation for the seabed of a shallow covering layer as claimed in claim 1, wherein: the pile foundation is fixedly connected with the tower barrel through a foundation top flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120110128.9U CN215211130U (en) | 2021-01-15 | 2021-01-15 | Pre-tensioned pile anchor combined foundation for shallow covering layer seabed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120110128.9U CN215211130U (en) | 2021-01-15 | 2021-01-15 | Pre-tensioned pile anchor combined foundation for shallow covering layer seabed |
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| CN215211130U true CN215211130U (en) | 2021-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508122A (en) * | 2022-03-25 | 2022-05-17 | 中国电建集团成都勘测设计研究院有限公司 | Rock foundation structure for photovoltaic support |
| CN114763698A (en) * | 2021-01-15 | 2022-07-19 | 中国电建集团华东勘测设计研究院有限公司 | Pre-tensioned pile anchor combined foundation for shallow covering layer seabed and construction method thereof |
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2021
- 2021-01-15 CN CN202120110128.9U patent/CN215211130U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763698A (en) * | 2021-01-15 | 2022-07-19 | 中国电建集团华东勘测设计研究院有限公司 | Pre-tensioned pile anchor combined foundation for shallow covering layer seabed and construction method thereof |
| CN114508122A (en) * | 2022-03-25 | 2022-05-17 | 中国电建集团成都勘测设计研究院有限公司 | Rock foundation structure for photovoltaic support |
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