Outer protection for 110kV line foundation

Abstract

The utility model relates to the technical field of power transmission line foundation protection, in particular to outer protection for a 110kV line foundation, which comprises a reinforcement cage and a cloth bag pile, the cloth bag pile sleeves the outer surface of the reinforcement cage, a plurality of fixing mechanisms are arranged on the inner side of the top of the reinforcement cage along the circumferential direction of the reinforcement cage, and a plurality of fixing holes are correspondingly formed in the top of the cloth bag pile. The tops of the cloth bag piles are bent towards the interior of the reinforcement cage, and the fixing holes penetrate through the fixing mechanisms. A plurality of first transverse bars and second transverse bars are arranged in the reinforcement cage in the axial direction of the reinforcement cage in a staggered mode, circular rings are arranged at the staggered points and can be contracted, vertical rods are arranged in the reinforcement cage in the axial direction, and the vertical rods sequentially penetrate through the circular rings to directly abut against the bottom of the reinforcement cage. Protruding blocks are fixedly arranged at the ends, away from the circular ring, of the first transverse ribs and the second transverse ribs, protruding bumps are correspondingly arranged on the cloth bag piles, and the protruding blocks can penetrate into the bumps. The cloth bag pile has the advantages that inclination of the pile body is reduced, and the cloth bag pile is not prone to deformation or falling.

Description

Technical Field

[0001] This application relates to the technical field of transmission line foundation protection, and in particular to an external protection for 110kV line foundations. Background Technology

[0002] Based on the engineering characteristics of saline soil, it poses the following main hazards to transmission line foundations: Solubility, leading to uneven settlement of independent foundations and causing deformation and damage to tower members; Salt swelling, causing loosening of the foundation cover and insufficient pull-out force; Corrosion, manifested as salt solution seeping into the concrete through pores or capillary action. When the temperature rises, the water in the salt solution evaporates, and the salt crystallizes, increasing in volume and generating significant internal stress in the concrete. When this internal stress exceeds the tensile strength of the concrete, it cracks and fails. This cracking then opens channels for further salt solution penetration, accelerating the damage. Furthermore, after the salt solution penetrates the concrete, harmful ions cause chemical and electrochemical corrosion of the reinforcing steel. The increased volume of rust also increases internal stress in the concrete, resulting in longitudinal cracks along the main reinforcement, ultimately leading to structural failure.

[0003] The current solution is to use the technology of externally wrapped geotextile bags for concrete piles. This technology involves wrapping a layer of anti-corrosion geotextile bag around the concrete pile, commonly known as a "bag pile," effectively isolating corrosive substances and protecting the pile from corrosion. Specifically, an externally wrapped geotextile bag concrete pile consists of a concrete pile body, a reinforcing cage, and a composite geotextile bag material with good waterproof and anti-corrosion properties (two layers of geotextile and one layer of geomembrane). During construction, the reinforcing cage is first covered with the geotextile bag, then lowered into the pile hole, and finally, concrete is poured. This method not only solves the corrosion problem of concrete piles in corrosive areas but also reduces costs and shortens the construction period.

[0004] Regarding the aforementioned technologies, the inventors believe the following drawbacks exist: improper installation of the fabric bag or insufficient fit with the reinforcing cage may exacerbate the swaying of the reinforcing cage during lowering, potentially causing pile tilting or necking; furthermore, the weight of the fabric bag may alter the center of gravity of the reinforcing cage, and if the lifting points are not properly positioned or the welding strength is insufficient, it can easily lead to localized deformation or even a fall during hoisting. Utility Model Content

[0005] To reduce pile tilting and prevent bag piles from deforming or falling, this application provides an external protection for 110kV line foundations.

[0006] This application provides a technical solution for external protection of 110kV line foundations, which adopts the following approach:

[0007] An external protection for a 110kV line foundation includes a reinforcing cage and bag piles. The reinforcing cage is placed in a foundation pit, and the bag piles are fitted onto the outer surface of the reinforcing cage. The bottom of the bag piles fitted onto the reinforcing cage is closed, and the top is open. Several fixing mechanisms are arranged along the circumference of the reinforcing cage on the inner side of the top of the reinforcing cage. Several fixing holes are correspondingly opened on the top of the bag piles. The top of the bag piles bends inward into the reinforcing cage, and the fixing holes pass through the fixing mechanisms. Several first and second transverse ribs are arranged along the axial direction of the reinforcing cage inside the reinforcing cage. The first and second transverse ribs are staggered, and a ring is provided at the intersection point. The ring is retractable. Vertical rods are arranged along the axial direction of the reinforcing cage inside the reinforcing cage. The vertical rods pass through the rings in sequence and reach the bottom of the reinforcing cage. Limiting holes are provided around the circumference of the reinforcing cage for the first and second transverse ribs to pass through. A protruding block is fixedly provided at the end of the first and second transverse ribs away from the ring. A protruding bulge is correspondingly provided on the bag pile, and the protruding block can pass into the bulge.

[0008] By adopting the above technical solution, after the bag pile is fitted into the steel cage, the top of the bag pile bends into the steel cage, and the fixing hole opened at the top of the bag pile passes through the fixing mechanism, thereby realizing the hoisting of the bag pile; several bulges are fixedly set around the bag pile, the first horizontal bar and the second horizontal bar are staggered, and the first horizontal bar and the second horizontal bar are fixedly set with protruding blocks at the ends away from the rings. The protruding blocks pass through the limiting holes on the steel cage. When the vertical rod is inserted into several rings in sequence, the diameter of the rings increases, pushing the first horizontal bar and the second horizontal bar to spread outwards around the rings, further pushing the protruding blocks to extend outwards from the limiting holes. Since the position of the protruding blocks corresponds to the bulges, the protruding blocks directly enter the bulges after extending out of the limiting holes, thereby supporting the bag pile in all directions, realizing a tight connection between the bag pile and the steel cage, reducing the tilting or necking of the pile body, and the bag pile has a certain tensile force around its periphery, making the bag pile less prone to deformation and less likely to fall off the steel cage.

[0009] Optionally, a positioning plate and a protective pad are sequentially provided at the bottom of the bag pile. The positioning plate is located above the protective pad and is fixedly connected to the protective pad. Several positioning holes are opened on the upper surface of the positioning plate. The support legs of the steel cage are inserted into the positioning holes. The bottom of the protective pad is in contact with the inner surface of the bottom of the bag pile.

[0010] By adopting the above technical solution, after the bag pile is installed on the steel cage, several legs of the steel cage are inserted into several positioning holes to fix the steel cage inside the bag pile. The protective pad can play a role in buffering and protection, reducing the pressure on the bottom of the bag pile and preventing the bag pile from being damaged due to excessive force.

[0011] Optionally, the ring includes four arc-shaped plates, and a spring is provided between each pair of adjacent arc-shaped plates. One end of the spring is fixedly connected to one of the arc-shaped plates, and the other end is fixedly connected to the adjacent arc-shaped plate.

[0012] By adopting the above technical solution, four arc-shaped plates form a ring, and springs are set between two adjacent arc-shaped plates. When subjected to external force, the ring can be made larger or smaller under the elastic force of the springs, thereby adjusting the diameter and further moving the first and second horizontal ribs closer to or further away from the center of the ring.

[0013] Optionally, the end of the vertical rod facing the bag pile has a tapered structure.

[0014] By adopting the above technical solution, the bottom of the vertical rod is set into a conical structure, so that the vertical rod can easily pass through the ring when it is inserted. As the vertical rod is inserted, the spring on the ring is stretched open, the diameter of the ring increases, and the first and second horizontal ribs extend in all directions, further enabling the protruding block to pass through the limiting hole and enter the bulge.

[0015] Optionally, the positioning plate has a second positioning hole at its center, and the vertical rod passes through the ring and is inserted into the second positioning hole.

[0016] By adopting the above technical solution, the vertical rod passes through several rings from the top of the steel cage and is directly inserted into the second positioning hole to fix the vertical rod, making it less likely to sway left and right.

[0017] Optionally, several of the bulges are sewn onto the bag post, and several bulges are connected to the bag post.

[0018] By adopting the above technical solution, the bulge and the bag post are sewn together with a stitch, which not only achieves a fixed connection between the bulge and the bag post, but also reduces the processing difficulty and saves time and effort.

[0019] Optionally, the fixing mechanism includes a fixing rod and a fixing block. One end of the fixing rod is fixedly connected to the reinforcing cage, and the other end is fixedly connected to the fixing block. The fixing block is a frustum or a sphere, and the diameter of the fixing block is larger than the diameter of the fixing rod.

[0020] By adopting the above technical solution, after the top of the bag pile is bent into the steel cage, the fixing hole passes through the fixing block and the fixing rod in sequence. Since the diameter of the fixing block is larger than the diameter of the fixing rod, the fixing hole is placed on the fixing rod after passing through the fixing block. The fixing block plays a blocking role, and the fixing hole will not easily fall off the fixing rod, thereby realizing the hoisting and fixing of the bag pile and reducing the risk of the bag pile falling from the steel cage.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By placing the bag pile inside the reinforcing cage, the top of the bag pile is bent inward into the reinforcing cage, and the fixing hole opened at the top of the bag pile passes through the fixing mechanism, thus realizing the hoisting of the bag pile; several bulges are fixedly set around the bag pile. When the vertical rod is inserted into several rings in sequence, the diameter of the rings increases, pushing the first and second horizontal bars to spread outwards around the rings, further pushing the protruding blocks to extend outwards from the limiting holes. After the protruding blocks extend out of the limiting holes, they directly enter the bulges, thereby supporting the bag pile in all directions, realizing a tight connection between the bag pile and the reinforcing cage, reducing the tilting or necking of the pile body, and the bag pile has a certain tensile force around its perimeter, making the bag pile less prone to deformation and less likely to fall off the reinforcing cage.

[0023] 2. By inserting several legs of the steel cage into several positioning holes, the steel cage is fixed inside the bag pile. The protective pad can play a role in buffering and protection, reducing the pressure on the bottom of the bag pile and preventing the bag pile from being damaged due to excessive force.

[0024] 3. A ring is formed by four arc-shaped plates, and springs are set between adjacent arc-shaped plates. When subjected to external force, the ring can be made larger or smaller under the elastic force of the springs, thus adjusting the diameter. This further allows the first and second horizontal ribs to move closer to or further away from the center of the ring. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an external protection structure for a 110kV line foundation according to this application.

[0026] Figure 2 This is a sectional view of the steel reinforcement cage in this application.

[0027] Figure 3 This is a top sectional view of the steel reinforcement cage in this application.

[0028] Figure 4 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0029] Figure 5 yes Figure 2 Enlarged diagram of part B.

[0030] Explanation of reference numerals in the attached drawings: 1. Reinforcing cage; 11. Limiting hole; 12. Support leg; 2. Bag pile; 21. Fixing hole; 22. Bulge; 3. Fixing mechanism; 31. Fixing rod; 32. Fixing block; 41. First horizontal bar; 42. Second horizontal bar; 43. Ring; 431. Arc plate; 432. Spring; 44. Protrusion; 5. Vertical rod; 6. Positioning plate; 61. Positioning hole one; 62. Positioning hole two; 7. Protective pad. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses an external protection method for 110kV line foundations. (Refer to...) Figure 1 An external protection system for 110kV line foundations includes a reinforcing cage 1 and bag piles 2. The reinforcing cage 1 is placed in the foundation pit. The bag piles 2 penetrate the reinforcing cage 1 from the bottom and are fitted onto the outer surface of the reinforcing cage 1 to form a protective layer. The bottom of the bag piles 2 fitted onto the reinforcing cage 1 is closed, and the top is open. Several fixing mechanisms 3 are arranged along the circumference of the reinforcing cage 1 on the inner side of the top of the reinforcing cage 1. The fixing mechanisms 3 are all welded to the reinforcing cage 1 or integrally formed. Several fixing holes 21 are correspondingly opened on the top of the bag piles 2. The number of fixing holes 21 is the same as the number of fixing mechanisms 3. The top of the bag piles 2 bends inward into the reinforcing cage 1, and the fixing holes 21 pass through the fixing mechanisms 3, thereby realizing the hanging of the bag piles 2 on the top of the reinforcing cage 1.

[0033] Reference Figure 2 and Figure 3 The steel cage 1 has several first horizontal bars 41 and second horizontal bars 42 arranged along its axial direction. The first horizontal bars 41 and second horizontal bars 42 are staggered, and a circular ring 43 is provided at the intersection point. The circular ring 43 can be contracted. The steel cage 1 has a limiting hole 11 around its circumference for the first horizontal bars 41 and second horizontal bars 42 to pass through. The limiting hole 11 passes through both the inner and outer sides of the steel cage 1. The ends of the first horizontal bars 41 and second horizontal bars 42 away from the circular ring 43 are each fixedly provided with a protruding block 44. The protruding block 44 is integrally formed with the first horizontal bar 41 or the second horizontal bar 42. The bag pile 2 is provided with a corresponding protruding bulge 22. Several bulges 22 are sewn onto the bag pile 2 and are connected to the bag pile 2. The protruding block 44 can pass into the bulge 22, thereby supporting the bag pile 2 and preventing the bag pile 2 from falling.

[0034] A vertical rod 5 is installed axially inside the steel cage 1. The vertical rod 5 can pass through several rings 43 from the top of the steel cage 1 to the bottom of the steel cage 1. The end of the vertical rod 5 facing the bottom of the bag pile 2 has a tapered structure so that the vertical rod 5 can easily pass through multiple rings 43.

[0035] The ring 43 includes four arc-shaped plates 431 and four springs 432. A spring 432 is provided between each pair of adjacent arc-shaped plates 431. One end of the spring 432 is fixedly connected to one of the arc-shaped plates 431, and the other end is fixedly connected to the other adjacent arc-shaped plate 431.

[0036] Reference Figure 2 and Figure 4The bottom of the bag pile 2 is provided with a positioning plate 6 and a protective pad 7. The positioning plate 6 is located above the protective pad 7 and is fixedly connected to the protective pad 7. The upper surface of the positioning plate 6 has a number of positioning holes 61 along the circumference of the positioning plate 6. The number of positioning holes 61 corresponds to the number of support legs 12 of the steel cage 1. The support legs 12 of the steel cage 1 are inserted into the positioning holes 61, thereby realizing the stable placement of the steel cage 1. The bottom of the protective pad 7 is in contact with the inner surface of the bottom of the bag pile 2.

[0037] Reference Figure 2 The positioning plate 6 has a positioning hole 62 in the center. The vertical rod 5 passes through the ring 43 and is inserted into the positioning hole 62, thereby fixing the vertical rod 5 and preventing it from swaying left and right.

[0038] Reference Figure 5 The fixing mechanism 3 includes a fixing rod 31 and a fixing block 32. One end of the fixing rod 31 is welded to or integrally formed with the reinforcing cage 1, and the other end is welded to or integrally formed with the fixing block 32. The fixing block 32 is a frustum or a sphere. The diameter of the fixing block 32 is larger than the diameter of the fixing rod 31, and the diameter of the fixing hole 21 is adapted to the diameter of the fixing block 32.

[0039] The term "fixed connection" in this application refers to welding or integral molding.

[0040] The implementation principle of this application is as follows: During construction, firstly, a foundation pit for embedding the reinforcing cage 1 is excavated. The pre-embedded reinforcing cage 1 is placed horizontally on the ground. The positioning plate 6 and protective pad 7 are placed at the bottom of the reinforcing cage 1, so that the support legs 12 of the reinforcing cage 1 are inserted into the positioning holes 61 one by one. Then, the bag pile 2 is fitted onto the reinforcing cage 1 from the bottom. The top of the bag pile 2 passes through the top of the reinforcing cage 1 and bends inward into the reinforcing cage 1. The fixing hole 21 passes through the fixing block 32 and is hung on the fixing rod 31, so that the bag pile 2 is suspended from the top of the reinforcing cage 1. Then, the vertical rod 5 is inserted into the ring 43 from the top of the reinforcing cage 1. As the vertical rod 5 is inserted, the first horizontal bar 41 and the second horizontal bar 42 are opened. The protruding block 44 passes through the limiting hole 11 and supports the bulge 22, so that the bag pile 2 is pulled from top to bottom, reducing the risk of the bag pile 2 falling. Finally, the bag pile 2 together with the reinforcing cage 1 is placed into the foundation pit, and concrete is poured into the reinforcing cage 1.

[0041] In this application, the vertical rod 5 can also be inserted after the bag pile 2 and the steel cage 1 are placed into the foundation pit.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A kind of outer protection for 110kV line foundation, including reinforcement cage (1) and cloth bag pile (2), the reinforcement cage (1) is placed in foundation pit, the cloth bag pile (2) is set on the outer surface of reinforcement cage (1), it is characterized by: The bag pile (2) fitted onto the reinforcing cage (1) is closed at the bottom and open at the top; several fixing mechanisms (3) are provided on the inner side of the top of the reinforcing cage (1) along the circumference of the reinforcing cage (1), and several fixing holes (21) are correspondingly opened on the top of the bag pile (2). The top of the bag pile (2) bends into the reinforcing cage (1), and the fixing holes (21) pass through the fixing mechanisms (3); several first transverse bars (41) and second transverse bars (42) are provided in the reinforcing cage (1) along the axial direction of the reinforcing cage (1). The first transverse bars (41) and second transverse bars (42) are staggered, and a fixing mechanism (3) is provided at the staggered point. The ring (43) is retractable. A vertical rod (5) is provided axially inside the steel cage (1). The vertical rod (5) can pass through several rings (43) in sequence and reach the bottom of the steel cage (1). The steel cage (1) is provided with a limiting hole (11) for the first horizontal bar (41) and the second horizontal bar (42) to pass through. A protruding block (44) is fixedly provided at the end of the first horizontal bar (41) and the second horizontal bar (42) away from the ring (43). A protruding bulge (22) is provided on the bag pile (2). The protruding block (44) can pass into the bulge (22).

2. An external shield for a 110 kV line foundation according to claim 1, characterized in that: The bottom of the bag pile (2) is provided with a positioning plate (6) and a protective pad (7) in sequence. The positioning plate (6) is located above the protective pad (7) and is fixedly connected to the protective pad (7). The upper surface of the positioning plate (6) is provided with a plurality of positioning holes (61). The support leg (12) of the steel cage (1) is inserted into the positioning hole (61). The bottom of the protective pad (7) is in contact with the inner surface of the bottom of the bag pile (2).

3. An external shield for a 110 kV line foundation according to claim 1, characterized in that: The ring (43) includes four arc-shaped plates (431), and a spring (432) is provided between each pair of adjacent arc-shaped plates (431). One end of the spring (432) is fixedly connected to one of the arc-shaped plates (431), and the other end is fixedly connected to the other adjacent arc-shaped plate (431).

4. An external shield for a 110 kV line foundation according to claim 1, characterized in that: The vertical rod (5) has a tapered structure at the end facing the bag pile (2).

5. An external shield for a 110 kV line foundation according to claim 2, characterized in that: The positioning plate (6) has a positioning hole 2 (62) in the center, and the vertical rod (5) is inserted into the positioning hole 2 (62) after passing through the ring (43).

6. An external shield for a 110 kV line foundation according to claim 1, characterized in that: Several of the aforementioned bulges (22) are sewn onto the bag post (2), and several of the bulges (22) are connected to the bag post (2).

7. An external shield for a 110 kV line foundation according to claim 1, characterized in that: The fixing mechanism (3) includes a fixing rod (31) and a fixing block (32). One end of the fixing rod (31) is fixedly connected to the steel cage (1), and the other end is fixedly connected to the fixing block (32). The fixing block (32) is a frustum or a sphere.

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