CN217651843U

CN217651843U - Mountain area overhead pile wall fan foundation

Info

Publication number: CN217651843U
Application number: CN202220992566.7U
Authority: CN
Inventors: 陈刚; 常显勇; 李华; 唐伟; 李晔
Original assignee: Sichuan Electric Power Design and Consulting Co Ltd
Current assignee: Sichuan Electric Power Design and Consulting Co Ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-25
Anticipated expiration: 2032-04-27

Abstract

The utility model relates to a wind-powered electricity generation field fan basis field discloses a mountain area built on stilts stake wall fan basis. This mountain area elevated pile wall fan basis includes cushion cap and a plurality of foundation piles, the cushion cap sets up on a plurality of foundation piles, be provided with the tower section of thick bamboo connection structure who is used for connecting a fan tower section of thick bamboo on the cushion cap, its characterized in that, the cushion cap is including being less than the domatic portion of burying of terrace and being higher than the domatic unsettled part of terrace, the unsettled part bottom of cushion cap is provided with the shear force wall, the foundation pile of the unsettled part below of cushion cap is connected with the shear force wall. In this mountain area elevated pile wall fan foundation, fan cushion cap one side is located and buries the soil layer, and the opposite side is unsettled, establishes the shear force wall at unsettled part, increases the rigidity of this part, and the foundation pile mainly bears the pulling pressure itself, and horizontal force and moment of flexure are born by the shear force wall, and the structure atress is clear reasonable, compares simultaneously in current hillside fan foundation and can reduce the relevant engineering volume that the domatic excavation of natural terrace and slope were handled.

Description

Mountain area overhead pile wall fan foundation

Technical Field

The utility model belongs to the technical field of wind-powered electricity generation field fan basis and specifically relates to mountain area built on stilts stake wall fan basis.

Background

At present, a relatively flat position of a mountain top is generally arranged under the condition of the existing fan position in a mountain area, but the fan position cannot be arranged at the relatively flat position of the mountain top generally due to the land property, the forestry property, the wind data and the geological condition in engineering practice, the installed scale and the generated energy of a project are ensured under the condition, only the fan position is arranged at a semi-mountain waist with a steep gradient, the bottom elevation of a conventional fan foundation is generally about 3.5 meters below a ground line, if the fan foundation at the semi-mountain waist is required to be about 3.5 meters below the ground, the excavation depth and the range of the foundation with the steep gradient are large, the engineering supporting engineering quantity of earthwork and side slope is large, and how to reduce the excavation quantity of the fan foundation with the steep gradient and the side slope processing cost has important significance on reducing the engineering cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a mountain area air-piled wall fan basis is provided, under the reasonable condition of atress performance, the excavation that has reduced the earthwork and the expense that the side slope was handled.

The utility model discloses a mountain area built on stilts pile wall fan basis, including cushion cap and a plurality of foundation pile, the cushion cap sets up on a plurality of foundation piles, be provided with a tower section of thick bamboo connection structure who is used for connecting a fan tower section of thick bamboo on the cushion cap, a serial communication port, the cushion cap is including being less than the domatic part of burying of terrace and being higher than the domatic unsettled part of terrace, the unsettled part bottom of cushion cap is provided with the shear force wall, the foundation pile of the unsettled part below of cushion cap is connected with the shear force wall.

Preferably, the shear wall comprises a plurality of wall segments, each wall segment being connected between two adjacent foundation piles.

Preferably, the foundation piles are distributed at the bottom of the bearing platform in the circumferential direction, and the transverse section of the shear wall is arc-shaped.

Preferably, the shear wall is a reinforced concrete wall.

Preferably, the tower cylinder connecting structure comprises a prestressed anchor bolt, an upper anchor plate and a lower anchor plate, the lower anchor plate is arranged at the bottom of the bearing platform, the upper anchor plate is arranged at the top of the bearing platform, and the upper end and the lower end of the prestressed anchor bolt are respectively connected with the upper anchor plate and the lower anchor plate.

Preferably, include 2 at least positioning anchor bolts in the prestressed anchorage bolt, the bottom that positioning anchor bolt corresponds the anchor slab is provided with the nylon nut.

The utility model has the advantages that: in this mountain area elevated pile wall fan foundation, fan cushion cap one side is located and buries the soil layer, and the opposite side is unsettled, establishes the shear force wall at unsettled part, increases the rigidity of this part, and the foundation pile mainly bears the pulling pressure itself, and horizontal force and moment of flexure are born by the shear force wall, and the structure atress is clear reasonable, compares simultaneously in current hillside fan foundation and can reduce the relevant engineering volume that the domatic excavation of natural terrace and slope were handled.

Drawings

Fig. 1 is a schematic plan view of the present invention;

FIG. 2 isbase:Sub>A sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view at I of FIG. 2;

fig. 4 is a perspective view of the present invention.

Reference numerals: the bearing platform comprises a bearing platform 1, an embedded part 11, a suspended part 12, foundation piles 2, shear walls 3, a tower barrel connecting structure 4, a prestressed anchor bolt 41, an upper anchor plate 42, a connecting flange 43, a lower anchor plate 44, nylon nuts 45 and a terrace slope surface 5.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses a mountain area elevated pile wall fan basis, including cushion cap 1 and a plurality of foundation pile 2, cushion cap 1 sets up on a plurality of foundation piles 2, be provided with a tower section of thick bamboo connection structure 4 that is used for connecting a fan tower section of thick bamboo on cushion cap 1, cushion cap 1 is including being less than the portion 11 of burying of terrace domatic 5 and being higher than the unsettled portion 12 of terrace domatic 5, cushion cap 1's unsettled portion 12 bottom is provided with shear force wall 3, foundation pile 2 of cushion cap 1's unsettled portion 12 below is connected with shear force wall 3.

As shown in fig. 1, 2 and 3, the bearing platform 1 of the mountain area elevated pile wall fan foundation is located on the inner side lower than the terrace surface 5 and buried in the soil layer, and the outer side higher than the terrace surface 5 forms a suspended part 12 similar to a corner building structure. The wind turbine tower is connected with the foundation through a tower connecting structure 4. The horizontal force, the vertical force and the bending moment of the fan foundation are large, the lateral rigidity of the pile with the large height exposed at the overhead part is small, the diameter and the reinforcement are required to be large under the action of the bending moment and the horizontal force to meet design requirements, therefore, the shear wall 3 is arranged at the bottom of the suspended part 12, the foundation pile 2 is connected with the shear wall 3, the rigidity of the part is increased, the foundation pile 2 mainly bears the tension and pressure, and the horizontal force and the bending moment are borne by the inter-pile wall.

The shear wall 3 is built along the inner side or the outer side of the foundation pile 2, and the stable connection between the shear wall 3 and the foundation pile 2 is ensured. However, in order to ensure that the shear wall 3 can better bear bending moment and horizontal force and improve the stability of the connection between the shear wall 3 and the foundation piles 2, the shear wall 3 comprises a plurality of wall sections, and each wall section is connected between two adjacent foundation piles 2.

The arrangement of the foundation piles 2 at the bottom of the bearing platform 1 can be set according to requirements, wherein the arrangement is most common in the circumferential direction, and for the foundation piles 2 distributed in the circumferential direction, the transverse section of the shear wall 3 is in a circular arc shape in order to prevent stress concentration.

The shear wall 3 is required to have sufficient strength, particularly to bear bending moment and horizontal force, and therefore, a reinforced concrete wall is preferably used.

The tower connecting structure 4 is used for connecting a wind power tower, and the concrete structure of the tower connecting structure 4 can refer to the existing tower connecting structure 4, wherein the connection mode of the prestressed anchor bolt 41 is the most common, in the preferred embodiment of the present application, as shown in fig. 2 and 3, the tower connecting structure 4 includes the prestressed anchor bolt 41, an upper anchor plate 42 and a lower anchor plate 44, the lower anchor plate 44 is disposed at the bottom of the bearing platform 1, the upper anchor plate 42 is disposed at the top of the bearing platform 1, and the upper end and the lower end of the prestressed anchor bolt 41 are respectively connected with the upper anchor plate 42 and the lower anchor plate 44. The prestressed anchor bolt 41 is fixed through the upper anchor plate 42 and the lower anchor plate 44, the top of the prestressed anchor bolt 41 is connected with the connecting flange 43 at the bottom of the tower barrel, the tower barrel is installed and fixed, meanwhile, the connecting flange 43 is located on the upper anchor plate 42, and the upper anchor plate 42 can disperse acting force. The tower drum connecting structure 4 is simple in structure and high in connecting stability. In order to ensure accurate installation of the tower, at least 2 positioning anchor bolts are included in the prestressed anchor bolt 41, and in order to ensure accurate positions of the positioning anchor bolts, nylon nuts 45 are arranged at the bottoms of the positioning anchor bolts corresponding to the upper anchor plates 42. The nylon nut 45 has better acid and alkali resistance and can keep the concrete from being corroded and displaced.

Claims

1. Mountain area elevated pile wall fan foundation, including cushion cap (1) and a plurality of foundation pile (2), cushion cap (1) sets up on a plurality of foundation pile (2), be provided with tower section of thick bamboo connection structure (4) that are used for connecting fan tower section of thick bamboo on cushion cap (1), its characterized in that, cushion cap (1) is including being less than burying part (11) of the domatic (5) of terrace and being higher than unsettled part (12) of the domatic (5) of terrace, unsettled part (12) bottom of cushion cap (1) is provided with shear force wall (3), foundation pile (2) of unsettled part (12) below of cushion cap (1) are connected with shear force wall (3).

2. The mountain area elevated pile wall fan foundation of claim 1, characterized in that: the shear wall (3) comprises a plurality of wall sections, and each wall section is connected between two adjacent foundation piles (2).

3. The mountain area elevated pile wall fan foundation of claim 1 or 2, wherein: the foundation piles (2) are distributed at the bottom of the bearing platform (1) in the circumferential direction, and the transverse section of the shear wall (3) is arc-shaped.

4. The mountain area elevated pile wall fan foundation of claim 1 or 2, wherein: the shear wall (3) is a reinforced concrete wall.

5. The mountain area elevated pile wall fan foundation of claim 1, characterized in that: the tower barrel connecting structure (4) comprises a pre-stressed anchor bolt (41), an upper anchor plate (42) and a lower anchor plate (44), wherein the lower anchor plate (44) is arranged at the bottom of the bearing platform (1), the upper anchor plate (42) is arranged at the top of the bearing platform (1), and the upper end and the lower end of the pre-stressed anchor bolt (41) are respectively connected with the upper anchor plate (42) and the lower anchor plate (44).

6. The mountain area elevated pile wall fan foundation of claim 5, characterized in that: the prestressed anchor bolt (41) comprises at least 2 positioning anchor bolts, and nylon nuts (45) are arranged at the bottoms of the positioning anchor bolts corresponding to the upper anchor plates (42).