CN215211134U - Fan cylindrical foundation consisting of underground continuous walls - Google Patents
Fan cylindrical foundation consisting of underground continuous walls Download PDFInfo
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- CN215211134U CN215211134U CN202120513264.2U CN202120513264U CN215211134U CN 215211134 U CN215211134 U CN 215211134U CN 202120513264 U CN202120513264 U CN 202120513264U CN 215211134 U CN215211134 U CN 215211134U
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Abstract
The utility model relates to a fan cylindric basis of constituteing by underground continuous wall, fan cylindric basis includes reinforced concrete cushion cap and underground continuous wall, reinforced concrete cushion cap is connected with the fan tower section of thick bamboo, underground continuous wall imbeds the bottom surface of reinforced concrete cushion cap, connects for whole, underground continuous wall is the polygon tube-shape, and the inside and outside is equipped with the reinforced concrete guide wall who plays direction and fixed action when the construction, underground continuous wall include along the circumference evenly arrange, and end to end connection closed loop a plurality of unit wall sections. Compared with the prior art, the utility model discloses not only can avoid digging greatly, or destroy the problem of original state soil when the open caisson construction, compare conventional pile foundation time limit for a project short, economic nature good moreover.
Description
Technical Field
The utility model belongs to the technical field of wind power generation technique and specifically relates to a fan cylindric basis of constituteing by underground continuous wall is related to.
Background
Wind power generation is one of the most mature and most extensive development conditions and commercial development prospects in various renewable energy fields, and available wind energy is widely distributed and has huge reserves in the global scope. Meanwhile, with the continuous maturity of wind power related technologies and the continuous upgrading of equipment, the global wind power generation industry develops at a high speed.
According to the characteristics of geological conditions, onshore wind power foundations can be divided into gravity type extended foundations, beam slab extended foundations, rock anchor rod foundations, pile foundations and cylindrical foundations, wherein the cylindrical foundations have the characteristics of direct stress, full utilization of soil passive soil pressure to resist upper overturning load, high structural efficiency and the like.
The cylindrical foundation is usually constructed by a large excavation method and an open caisson construction method. For example, the construction equipment special for the muck pile invented by Sprahlung and the like adopts a large excavation construction method, and the assembled square-tube-shaped multi-layer concrete underground garage invented by Wangzhiling and the like adopts a sinking well construction method. The large excavation construction method has large excavation and backfilling engineering quantity, damages undisturbed soil and is difficult to excavate when the depth is large; the open caisson construction method is characterized in that a prefabricated cylindrical inner soil body is excavated, the barrel is controlled to sink uniformly, and the inner part of the barrel is backfilled.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fan cylindric basis of compriseing underground continuous wall in order to overcome the defect that above-mentioned prior art exists, not only avoid the problem of big excavation that conventional cylindric adopted, or destroy original state soil during open caisson construction, compare conventional pile foundation time limit for a project short, economic nature good moreover.
The purpose of the utility model can be realized through the following technical scheme:
a fan cylindrical foundation consisting of underground continuous walls comprises a reinforced concrete bearing platform and the underground continuous walls, wherein the reinforced concrete bearing platform is connected with a fan tower barrel, the underground continuous walls are embedded into the bottom surface of the reinforced concrete bearing platform and are connected into a whole, the underground continuous walls are polygonal cylindrical, reinforced concrete guide walls which play a role in guiding and fixing during construction are arranged on the inner side and the outer side of the underground continuous walls, and the underground continuous walls comprise a plurality of unit wall sections which are uniformly arranged along the circumference and are connected with a closed loop end to end.
Furthermore, each unit wall section include horizontal reinforcing bar, horizontal reinforcing bar both ends are provided with the perk section of withstanding adjacent unit wall section.
Furthermore, the tilting section comprises an inclined section and a horizontal section which are integrally formed.
Further, the reinforced concrete guide wall is positioned at the end part, close to the ground, of the underground continuous wall.
Furthermore, a plain concrete cushion layer is arranged between the reinforced concrete bearing platform and the underground continuous wall.
Furthermore, the reinforced concrete bearing platform is connected with the fan tower barrel through the embedded prestressed anchor bolt assembly.
Further, the prestressed anchor bolt assembly is provided with a plurality of prestressed anchor bolt assemblies.
Further, the prestressed anchor bolt assembly comprises an upper anchor plate, an anti-corrosion anchor bolt and a lower anchor plate which are sequentially connected.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses an underground continuous wall forms the cylindric basis, avoids the big excavation of conventional cylindric adoption, or open caisson construction, avoids destroying original state soil, and the construction degree of difficulty is little, and the working face is little.
2. The utility model discloses below the cushion cap bottom surface, the underground continuous wall inside and outside is provided with reinforced concrete and leads the wall, and this reinforced concrete leads the wall and plays the constraint effect to the barrel that the continuous wall formed, and has improved the bearing capacity of the inside and outside soil body of a section of thick bamboo.
3. The utility model discloses underground continuous wall is connected with the reinforced concrete cushion cap, forms the cylindric basis that the wholeness is good, is particularly suitable for bearing the load that the upper portion fan transmitted, use the moment of flexure as giving first place to.
4. The utility model discloses adjacent wall section has the horizontal reinforcement of turn-up to withstand, improves the combination of adjacent wall section.
5. To the high soft soil foundation of groundwater level, the utility model discloses the cylindric basis of constituteing by underground continuous wall compares conventional pile foundation time limit for a project short, economic nature is good.
Drawings
FIG. 1 is a sectional view of a cylindrical foundation of a blower consisting of underground diaphragm walls according to the present invention;
FIG. 2 shows a top view of a fan barrel foundation made up of underground diaphragm walls;
FIG. 3 is a cross-sectional view of a diaphragm wall;
FIG. 4 shows a top view of a diaphragm wall;
FIG. 5 is a front view of a horizontal reinforcement bar;
description of reference numerals: 1. the reinforced concrete bearing platform comprises a reinforced concrete bearing platform, 2, an underground continuous wall, 3, a reinforced concrete guide wall, 4, a plain concrete cushion layer, 5, a prestressed anchor bolt assembly, 6, a wall section A, 7, a joint pipe, 8, a wall section B, 9, horizontal steel bars, 10 and a tilting section.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The embodiment provides a fan cylindrical foundation consisting of underground continuous walls, and the fan cylindrical foundation is shown in figure 1 and comprises a reinforced concrete bearing platform 1 and the underground continuous walls 2, wherein the underground continuous walls are embedded into the bottom surface of the reinforced concrete bearing platform and are connected into a whole, the underground continuous walls 2 are polygonal cylindrical, and reinforced concrete guide walls 3 which play a role in guiding and fixing during construction are arranged on the inner side and the outer side of the underground continuous walls. The prestressed anchor bolt assembly 5 is buried in the reinforced concrete bearing platform 1 and is connected with the fan tower barrel. Preferably, the reinforced concrete guide wall 3 is located at the end of the underground continuous wall 2 near the ground.
As shown in fig. 2, in the present embodiment, the underground continuous wall 2 is a polygonal cylinder shape in which a plurality of unit wall segments are connected end to end and are uniformly arranged along the circumference. Referring to fig. 4 and 5, each unit wall segment includes horizontal reinforcing bars 9, and both ends of each horizontal reinforcing bar 9 are provided with tilting sections 10 against the adjacent unit wall segments, so as to facilitate the segmental construction of each unit wall segment. The tilting section 10 includes an inclined section and a horizontal section which are integrally formed.
In some embodiments, the reinforced concrete cap 1 is cast-in-place reinforced concrete, and a plain concrete cushion layer 4 is arranged between the reinforced concrete cap and the underground continuous wall 2. In this embodiment, the reinforced concrete bearing platform 1 includes a pier and a cantilever plate, and is connected with the wind turbine tower through the prestressed anchor bolt assembly 5.
In some embodiments, the prestressed anchor bolt assembly 5 may be provided in plurality, so as to improve the stability of the reinforced concrete bearing platform 1 and the wind turbine tower. In this embodiment, the pre-stressed anchor bolt assembly 5 includes an upper anchor plate, an anti-corrosion anchor bolt and a lower anchor plate, which are connected in sequence.
The construction method corresponding to the fan cylindrical foundation consisting of the underground continuous walls provided by the embodiment comprises the following steps:
1) and (3) leveling the site, excavating and constructing the reinforced concrete guide wall 3, wherein the plane position of the foundation is determined by site lofting according to the coordinate value of the central point of the fan foundation, one end of the reinforced concrete guide wall 3 is buried underground, and the other end of the reinforced concrete guide wall is not less than 200mm higher than the ground. In this embodiment, the reinforced concrete guide wall 3 is 300mm higher than the ground, as shown in fig. 3.
2) Referring to fig. 4, the unit wall segments of the underground diaphragm wall are constructed at intervals in sections. Two adjacent unit wall segments are respectively called a wall segment A6 and a wall segment B8. And (4) performing grooving construction on the wall section A6, after the groove is checked, adding the joint pipe 7, and after the steel reinforcement framework is installed, pouring concrete on the wall section A6. And (4) pulling out the joint pipe 7, excavating a groove on the wall section B8, removing laitance at the end of the wall section A6 by using a wall brushing machine, and installing a steel reinforcement framework of the wall section B8, wherein two ends of the horizontal steel bar 9 are upwards tilted. As shown in fig. 5, the raised section 10 is placed against the a-wall section 6 and concrete is poured.
3) And excavating a foundation pit of the reinforced concrete bearing platform 1, removing the reinforced concrete guide wall 3 within the depth range of the foundation pit, and reserving the reinforced concrete guide wall 3 below the reinforced concrete bearing platform 1.
4) And pouring a plain concrete cushion layer 4, installing a pre-stressed anchor bolt assembly 5, and constructing the reinforced concrete bearing platform 1.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The fan cylindrical foundation is characterized by comprising a reinforced concrete bearing platform (1) and an underground continuous wall (2), wherein the reinforced concrete bearing platform (1) is connected with a fan tower cylinder, the underground continuous wall (2) is embedded into the bottom surface of the reinforced concrete bearing platform (1) and is integrally connected, the underground continuous wall (2) is in a polygonal cylindrical shape, reinforced concrete guide walls (3) which play a role in guiding and fixing during construction are arranged on the inner side and the outer side of the underground continuous wall, and the underground continuous wall (2) comprises a plurality of unit wall sections which are uniformly arranged along the circumference and are connected with a closed loop end to end.
2. The draught fan cylindrical foundation consisting of underground continuous walls as claimed in claim 1, wherein each unit wall section comprises horizontal steel bars (9), and both ends of each horizontal steel bar (9) are provided with tilting sections (10) which are propped against the adjacent unit wall sections.
3. A fan barrel foundation consisting of an underground diaphragm wall according to claim 2, wherein the raised section (10) comprises an integrally formed inclined section and a horizontal section.
4. A draught fan cylindrical foundation consisting of an underground diaphragm wall according to claim 1, wherein the reinforced concrete guide wall (3) is located at the end of the underground diaphragm wall (2) close to the ground.
5. A wind turbine cylindrical foundation consisting of an underground diaphragm wall according to claim 1, characterized in that a plain concrete cushion (4) is provided between the reinforced concrete bearing platform (1) and the underground diaphragm wall (2).
6. A wind turbine foundation consisting of underground diaphragm walls, according to claim 1, characterized in that the reinforced concrete bearing platform (1) is connected to the wind turbine tower by means of embedded prestressed anchor bolt assemblies (5).
7. A draught fan cylindrical foundation consisting of an underground diaphragm wall according to claim 6, wherein the pre-stressed anchor bolt assembly (5) is provided in plurality.
8. A draught fan cylindrical foundation consisting of an underground diaphragm wall according to claim 6, wherein the pre-stressed anchor bolt assembly (5) comprises an upper anchor plate member, an anti-corrosion anchor bolt member and a lower anchor plate member which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120513264.2U CN215211134U (en) | 2021-03-11 | 2021-03-11 | Fan cylindrical foundation consisting of underground continuous walls |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120513264.2U CN215211134U (en) | 2021-03-11 | 2021-03-11 | Fan cylindrical foundation consisting of underground continuous walls |
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| CN215211134U true CN215211134U (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125987A (en) * | 2022-07-11 | 2022-09-30 | 天津大学 | Land wind power foundation structure with capacity expansion capability and capacity expansion construction method thereof |
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2021
- 2021-03-11 CN CN202120513264.2U patent/CN215211134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125987A (en) * | 2022-07-11 | 2022-09-30 | 天津大学 | Land wind power foundation structure with capacity expansion capability and capacity expansion construction method thereof |
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