CN220166970U - Barrel-shaped open caisson fan foundation - Google Patents
Barrel-shaped open caisson fan foundation Download PDFInfo
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- CN220166970U CN220166970U CN202320991297.7U CN202320991297U CN220166970U CN 220166970 U CN220166970 U CN 220166970U CN 202320991297 U CN202320991297 U CN 202320991297U CN 220166970 U CN220166970 U CN 220166970U
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- open caisson
- fan
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- 239000002689 soil Substances 0.000 claims abstract description 44
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000011150 reinforced concrete Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 26
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a cylindrical open caisson fan foundation, which comprises an annular cylinder (1) and a reinforcement body (3), wherein the bottom end of the annular cylinder (1) is provided with a cutting edge (4), soil bodies (5) are filled in the annular cylinder (1), and the reinforcement body (3) is arranged outside the annular cylinder (1); the annular cylinder (1) is provided with a fan tower cylinder, and the fan tower cylinder comprises a mixing tower or a steel tower; when the fan tower barrel is a mixing tower, a bearing platform (6) is arranged at the top end of the annular barrel (1), the mixing tower is borne on the bearing platform (6), and the annular barrel (1) and the bearing platform (6) are provided with a reinforcing body (3) outside; when the fan tower barrel is a steel tower, the top surface of the annular barrel (1) bears the steel tower. Compared with the prior art, the utility model avoids the large excavation adopted by the conventional foundation, avoids damaging undisturbed soil, reduces construction difficulty and working face, and improves the bearing capacity of soil bodies inside and outside the cylinder and the constraint function on the foundation.
Description
Technical Field
The utility model belongs to the technical field of wind power generation, and relates to a cylindrical open caisson fan foundation.
Background
Wind power generation is the mode with the prospect of scale development and commercial development in various renewable energy utilization technologies, is an important green energy investment project in China, and plays an important role in the economic development of the national economy in China.
According to geological condition characteristics, land wind power foundation forms can be divided into a gravity type extension foundation, a beam plate type extension foundation, a rock anchor rod foundation, a pile foundation, a cylindrical foundation and the like, wherein the cylindrical foundation has the characteristics of direct stress, full utilization of soil body passive soil pressure, upper overturning load resistance, high structural efficiency and the like.
The cylindrical foundation is usually constructed by a large excavation construction method and a secant pile construction method. The large excavation construction method has large excavation and backfill engineering quantity, damages undisturbed soil, and is difficult to excavate when the depth is large; the occlusion construction method has lower construction efficiency and higher construction cost.
Patent CN215211135U discloses a fan cylindric basis of constituteing by interlock stake, fan cylindric basis includes reinforced concrete cushion cap and interlock stake, reinforced concrete cushion cap is connected with fan tower section of thick bamboo, the bottom surface of interlock stake embedding reinforced concrete cushion cap is connected as an integer, the interlock stake is circular tube-shape, and inside and outside is equipped with the reinforced concrete guide wall that plays direction and fixed action when the construction, the interlock stake includes a plurality of unit piles of evenly arranging along circumference, and adjacent unit pile interlock each other. However, the pile for the post construction is required to be "meshed" with the pile already constructed, and the construction period is long.
Patent CN211006741U discloses a reinforced structure of P & H type rock anchor rod fan foundation, including setting up the steel reinforcement cage outside base cushion cap and bottom tower section of thick bamboo and pouring the concrete that forms an organic whole with the steel reinforcement cage, the cantilever plate of reinforced foundation is formed to base cushion cap and the concrete of pouring, the bottom tower section of thick bamboo and the pier of reinforced foundation with the concrete formation of pouring. But this patent is only applicable to reinforcement and is not generally used in new projects.
Disclosure of Invention
The utility model aims to overcome at least one defect in the prior art and provide a cylindrical open caisson fan foundation, and the utility model avoids the large excavation adopted by the conventional foundation, avoids damaging undisturbed soil, reduces construction difficulty and working face, and improves the bearing capacity of soil bodies inside and outside the cylinder and the constraint function on the foundation.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a cylindrical open caisson fan foundation, which comprises an annular cylinder and a reinforcing body, wherein the bottom end of the annular cylinder is provided with cutting edges, soil is filled in the annular cylinder, and a plurality of rings of reinforcing bodies are arranged outside the annular cylinder;
the annular cylinder is provided with a fan tower cylinder, and the fan tower cylinder comprises a mixing tower or a steel tower.
Further, a bearing platform is arranged at the top end of the annular cylinder, and a mixing tower is borne on the bearing platform.
Further, the annular cylinder and the bearing platform cylinder are provided with reinforcing bodies.
Further, the annular cylinder and the bearing platform cylinder body are provided with prestress ropes, the bottom end acts on the blade feet, and the top end acts on the top surface of the bearing platform.
Further, an annular groove with a narrow upper part and a wide lower part is formed in the bearing platform, and the convex part at the upper part of the bearing platform is anchored with the mixing tower.
Further, the protruding portion of cushion cap upper portion be equipped with the prestressing force crab-bolt, the bottom acts on cushion cap upper portion protruding portion bottom, the top acts on the mixing tower.
Further, the top surface of the bearing platform is provided with a groove for bearing the mixing tower.
Further, the top surface of the annular cylinder bears a steel tower.
Further, the annular cylinder body is provided with a prestress cable, the bottom end of the prestress cable acts on the cutting edge foot, and the top end of the prestress cable acts on the flange at the bottom end of the steel tower.
Further, the soil body ground covers the waterproof layer or the reinforced concrete disperses water.
As the preferable technical scheme, the annular cylinder is formed by prefabricating, assembling or sectional pouring reinforced concrete, and the bearing platform is formed by cast-in-situ reinforced concrete.
As a preferable technical scheme, the soil body comprises powdery clay or sandy soil, and the reinforcement body comprises high-pressure grouting, cement soil stirring piles, high-pressure jet grouting piles or gravel piles.
As the preferable technical scheme, the soil body is powdery clay, and the reinforcement body comprises high-pressure grouting, cement soil stirring piles or high-pressure jet grouting piles.
As the preferable technical scheme, the soil body is sandy soil, and the reinforcement body comprises high-pressure grouting or gravel piles.
The utility model provides a construction method of a cylindrical open caisson fan foundation, wherein a fan tower is a mixed tower, and the construction method comprises the following steps:
(1-1) leveling a site, and arranging an annular cylinder with a cutting edge at the construction bottom end;
(1-2) tensioning a prestress cable of the annular cylinder body;
(1-3) digging soil in the annular cylinder, so that the annular cylinder uniformly sinks to the designed depth and is embedded into foundation soil;
(1-4) backfilling soil in the annular cylinder;
(1-5) constructing a bearing platform at the top end of the annular cylinder;
(1-6) stretching the prestress cable of the annular cylinder and the bearing platform cylinder body to a designed pretension force;
(1-7) constructing the annular cylinder and the reinforcement outside the bearing platform cylinder.
The utility model provides a construction method of a cylindrical open caisson fan foundation, wherein a fan tower barrel is a steel tower, and the construction method comprises the following steps:
(2-1) leveling a site, and arranging an annular cylinder with a cutting edge at the construction bottom end;
(2-2) tensioning the prestress cable of the annular cylinder body to a designed pretension force;
(2-3) digging soil in the annular cylinder, so that the annular cylinder uniformly sinks to the designed depth and is embedded into foundation soil;
(2-4) backfilling soil in the annular cylinder;
(2-5) constructing a reinforcement outside the annular cylinder.
Compared with the prior art, the utility model has the following advantages:
(1) The utility model adopts the open caisson method to construct the annular cylinder, so that foundation soil is embedded, no large excavation of conventional foundation exists, the damage to undisturbed soil is avoided, the working surface is small, and the foundation occupation area is small;
(2) According to the utility model, the soil outside the cylinder, which is disturbed during the construction of the open caisson, is reinforced by adopting the externally added solids of the cylinder, so that the bearing capacity of the soil inside and outside the cylinder and the restraint effect on the foundation are improved;
(3) According to different geological conditions, different reinforcement methods can be adopted for the soil body outside the cylinder;
(4) The utility model has the advantages of small volume, capability of realizing all prefabrication, less site construction, more controllable quality, short construction period and good economy.
Drawings
FIG. 1 is a schematic plan view of a cylindrical open caisson fan foundation according to embodiment 1 of the present utility model;
FIG. 2 is a schematic cross-sectional view of a cylindrical open caisson fan foundation according to example 1 of this utility model;
FIG. 3 is a schematic plan view of a cylindrical open caisson fan foundation according to embodiment 3 of this utility model;
FIG. 4 is a schematic cross-sectional view of a cylindrical open caisson fan foundation according to example 3 of this utility model.
The figure indicates:
1-annular cylinder, 2-prestressed cable, 3-reinforcing body, 4-cutting edge, 5-soil body and 6-bearing platform.
Detailed Description
The present utility model will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
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 positive 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 will be understood in specific cases by those of ordinary skill in the art.
Example 1:
a cylindrical open caisson fan foundation is shown in figures 1 and 2, and comprises an annular cylinder 1, a prestressed cable 2, a reinforcement body 3 and a bearing platform 6, wherein the bottom end of the annular cylinder 1 is provided with a cutting edge 4, and the cylinder of the annular cylinder 1 is filled with soil 5. The fan tower barrel is a mixing tower, the top end of the annular barrel 1 is provided with a bearing platform 6, the top surface of the bearing platform 6 is provided with a groove, and the fan tower barrel is borne; the bearing platform 6 is internally provided with a ring groove with a narrow upper part and a wide lower part, and a convex part at the upper part of the bearing platform 6 is anchored with a mixing tower; the protruding portion in the upper portion of the bearing platform 6 is provided with a circle of prestress anchor bolts, the bottom end of the prestress anchor bolts acts on the bottom end of the protruding portion in the upper portion of the bearing platform 6, and the top end of the prestress anchor bolts acts on a fan tower. The soil body 5 adopts powdery clay, four rings of reinforcement bodies 3 are arranged outside the annular cylinder 1 and the bearing platform 6, and the reinforcement bodies 3 adopt cement-soil stirring piles. The annular cylinder 1 and the bearing platform 6 cylinder are provided with a circle of prestress cable 2, the bottom end acts on the blade pin 4, and the top end acts on the top surface of the bearing platform 6.
The annular cylinder 1 is formed by prefabricating and assembling reinforced concrete, and the bearing platform 6 is formed by cast-in-situ reinforced concrete.
A construction method of a cylindrical open caisson fan foundation comprises the following specific steps:
(1-1) leveling a site, and arranging an annular cylinder 1 with a cutting edge 4 at the construction bottom end;
(1-2) tensioning a prestress cable 2 of the cylinder body of the annular cylinder 1;
(1-3) digging soil 5 in the annular cylinder 1, so that the annular cylinder 1 is uniformly sunk to the designed depth and embedded into foundation soil;
(1-4) backfilling soil 5 in the annular cylinder 1;
(1-5) constructing a bearing platform 6 at the top end of the annular cylinder 1;
(1-6) stretching the prestress rope 2 of the annular cylinder 1 and the bearing platform 6 cylinder to a designed pretension force;
(1-7) constructing the annular cylinder 1 and the reinforcement body 3 outside the bearing platform 6.
Example 2:
a cylindrical open caisson fan foundation and a construction method thereof are basically the same as those of the embodiment 1, except that the reinforcing body 3 is formed by high-pressure grouting, and the annular cylinder 1 is formed by reinforced concrete sectional casting.
Example 3:
a cylindrical open caisson fan foundation is shown in figures 3 and 4, and comprises an annular cylinder 1, a prestressed cable 2 and a reinforcement body 3, wherein the bottom end of the annular cylinder 1 is provided with a cutting edge 4, and soil 5 is filled in the annular cylinder 1. The fan tower cylinder is a steel tower, the soil body 5 covers the reinforced concrete for water dispersion, and the top surface of the annular cylinder 1 bears the fan tower cylinder. The soil body 5 adopts sandy soil, four rings of reinforcement bodies 3 are arranged outside the annular cylinder 1, and the reinforcement bodies 3 adopt gravel piles. The cylinder body of the annular cylinder 1 is provided with two circles of prestress ropes 2, the bottom end of the prestress ropes acts on the cutting edge 4, and the top end of the prestress ropes acts on the flange at the bottom end of the fan tower cylinder.
The annular cylinder 1 is formed by prefabricating and assembling reinforced concrete.
A construction method of a cylindrical open caisson fan foundation comprises the following specific steps:
(2-1) the site is leveled, and the construction bottom end is provided with an annular cylinder 1 with a cutting edge 4;
(2-2) tensioning the prestress rope 2 of the cylinder body of the annular cylinder 1 to a designed pretension force;
(2-3) digging soil 5 in the annular cylinder 1, so that the annular cylinder 1 is uniformly sunk to the designed depth and embedded into foundation soil;
(2-4) backfilling soil 5 in the annular cylinder 1;
(2-5) constructing the reinforcement body 3 outside the annular cylinder 1.
Example 4:
a cylindrical open caisson fan foundation and a construction method thereof are basically the same as those of the embodiment 3, except that the reinforcing body 3 is formed by high-pressure grouting, and the annular cylinder 1 is formed by reinforced concrete sectional casting.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The cylindrical open caisson fan foundation is characterized by comprising an annular cylinder (1) and a reinforcement body (3), wherein cutting edges (4) are arranged at the bottom end of the annular cylinder (1), soil bodies (5) are filled in the annular cylinder (1), and the reinforcement body (3) is arranged outside the annular cylinder (1);
the annular cylinder (1) is provided with a fan tower cylinder, and the fan tower cylinder comprises a mixing tower or a steel tower.
2. A cylindrical open caisson fan foundation according to claim 1, characterized in that the top end of the annular cylinder (1) is provided with a platform (6), which platform (6) carries the mixing tower.
3. A cylindrical open caisson fan foundation according to claim 2, characterized in that the annular cylinder (1) and the carrier (6) are provided with additional bodies (3) outside the cylinder.
4. A cylindrical open caisson fan foundation according to claim 2, characterized in that the annular cylinder (1) and the bearing platform (6) cylinder are provided with pre-stressing cables (2), the bottom end acting on the blade feet (4) and the top end acting on the top surface of the bearing platform (6).
5. The cylindrical open caisson fan foundation according to claim 2, wherein the ring grooves with narrow upper parts and wide lower parts are formed in the bearing platform (6), and the convex parts on the upper part of the bearing platform (6) are anchored with the mixing tower.
6. A cylindrical open caisson fan foundation according to claim 5, characterized in that the upper bulge of the platform (6) is provided with prestressed anchors, the bottom end of which acts on the bottom end of the upper bulge of the platform (6) and the top end of which acts on the mixing tower.
7. A cylindrical open caisson fan foundation according to claim 2, characterized in that the top surface of the platform (6) is provided with a groove for carrying the mixing tower.
8. A cylindrical open caisson fan foundation according to claim 1, characterized in that the top surface of the annular cylinder (1) carries a steel tower.
9. A cylindrical open caisson fan foundation according to claim 8, characterized in that the cylinder of the annular cylinder (1) is provided with a pre-stressing cable (2), the bottom end of which acts on the blade foot (4), and the top end of which acts on the flange of the bottom end of the steel tower.
10. A cylindrical open caisson fan foundation according to claim 8, characterized in that the soil body (5) is covered with a waterproof layer or a reinforced concrete water dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320991297.7U CN220166970U (en) | 2023-04-26 | 2023-04-26 | Barrel-shaped open caisson fan foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320991297.7U CN220166970U (en) | 2023-04-26 | 2023-04-26 | Barrel-shaped open caisson fan foundation |
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| Publication Number | Publication Date |
|---|---|
| CN220166970U true CN220166970U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320991297.7U Active CN220166970U (en) | 2023-04-26 | 2023-04-26 | Barrel-shaped open caisson fan foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220166970U (en) |
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2023
- 2023-04-26 CN CN202320991297.7U patent/CN220166970U/en active Active
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