Power transmission line tower foundation suitable for steep terrain

Abstract

The utility model discloses a power transmission line tower foundation suitable for steep terrains, which comprises a tower leg foundation, a short tower leg and a long tower leg, the short tower leg and the long tower leg are respectively arranged on a slope through the tower leg foundation, the top of the short tower leg and the top of the long tower leg are flush with each other, the top of the short tower leg and the top of the long tower leg are connected with a tower base station, and a tower seat is arranged on the tower base station. A positioning column embedded in a slope is arranged in the center under the tower base platform, namely the tower leg foundation and the positioning column are arranged in a cross structure, diagonal draw bars are arranged on the positioning column and connected with the short tower legs and the long tower legs respectively, auxiliary pull rods are arranged on the tower base platform and / or the short tower legs, and the auxiliary pull rods are embedded in the slope through anchor rods to be fixed. According to the utility model, the installation requirement of a power transmission tower in steep terrains can be met, the grade difference of the iron tower is greatly increased, the adaptive capacity of the iron tower to the steep terrains is improved and the force transmission is clear under the condition that the bearing performance and the anti-bending performance are ensured, and the iron tower has better anti-shaking or anti-vibration performance and can adapt to various tower position schemes.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission line tower technology, and in particular relates to a power transmission line tower foundation suitable for steep terrain. Background Technology

[0002] Power transmission lines in mountainous areas are mostly located in high-altitude, rugged, and inaccessible regions, resulting in increasingly challenging conditions for transmission tower locations. Current technologies typically employ towers with varying leg lengths to address elevation differences and adapt to terrain variations. When installing such towers in steep mountainous areas, excavation is usually required to secure the long and short legs to their respective foundations. However, this involves extensive excavation and negatively impacts soil and water conservation. Furthermore, transmission towers in mountainous areas are susceptible to wind swaying and cable vibration, increasing the stress on the tower foundation and raising the risk of bending and collapse over time.

[0003] Therefore, developing a new type of transmission line tower foundation that solves the aforementioned problems is the key to solving the problem. Utility Model Content

[0004] The present invention provides a transmission line tower foundation suitable for steep terrain.

[0005] This utility model is achieved through the following technical solution: it includes a tower leg foundation, short tower legs, and long tower legs. Short tower legs and long tower legs are respectively set on the slope through the tower leg foundation. The tops of the short tower legs and long tower legs are flush, and a tower base is connected to the top of the two. A tower base is set on the tower base. A positioning column embedded in the slope is set at the center directly below the tower base, so that the tower leg foundation and positioning column are arranged in a cross-shaped structure. Diagonal tie rods are set on the positioning columns to connect each short tower leg and long tower leg respectively. Auxiliary tie rods are set on the tower base and / or each short tower leg. The lower end of the auxiliary tie rods is embedded in the slope and fixed by anchor rods.

[0006] Furthermore, the tower leg foundation includes concrete piles, bearing piles, and bearing adjustment components. The lower part of the bearing piles is coaxially fixed in the concrete piles, and the bearing adjustment components are integrally formed on the top of the bearing piles.

[0007] Furthermore, the bearing adjustment component includes a lower flange, an upper flange, and connecting bolts. The lower flange is fixedly installed on the top of the bearing pile, and the upper flange is fixedly installed on the bottom of the short tower leg and the long tower leg, respectively. The connecting bolts connect the lower flange and the upper flange into one piece. The upper surface of the upper flange is provided with a tower leg mounting seat.

[0008] Furthermore, it also includes a vibration damping mechanism with an all-steel structure. The vibration damping mechanism includes a lower pressure steel frame, an upper pressure steel frame, a locking screw, a traction screw, and a traction component. The lower pressure steel frame is configured as a square structure adapted to the shape of the tower legs, and the upper pressure steel frame is configured as a square structure adapted to the shape of the tower. The lower pressure steel frame is fixedly installed in the upper middle part of the short tower legs and the long tower legs by locking screws, and the upper pressure steel frame is fixedly installed in the lower part of the tower by locking screws. The traction screw is located between the lower pressure steel frame and the upper pressure steel frame. The traction component is respectively installed on each beam of the lower pressure steel frame or the upper pressure steel frame, and the lower end of the traction component is fixedly connected to a positioning column.

[0009] The beneficial effects of this utility model are: 1. It meets the installation requirements of transmission towers in steep terrain. The structural form is changed. The transmission towers in related technologies are truss structures, and the members only bear tension and pressure, which effectively reduces the problem of a large amount of earthwork excavation caused by raising the main column of the foundation, and avoids soil erosion or landslides caused by changes in the landform due to foundation excavation.

[0010] 2. In steep terrain and high-altitude areas, short tower legs are selected, while long tower legs are selected in low-altitude areas. This can significantly increase the tower's structural strength without changing the angle between the short leg and the partition, or the angle between the main diagonal member of the long leg, and while ensuring load-bearing and bending resistance. This improves the tower's adaptability to steep terrain, and also results in a simple structure, clear force transmission, and the elimination of most of the forces caused by swaying or vibration, relieving the load-bearing pressure and effectively ensuring the stability of the tower. It can also adapt to various tower location schemes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a structural schematic diagram of the bearing adjustment component;

[0013] Figure 3 This is a schematic diagram of the vibration damping mechanism;

[0014] Figure 4 This is a top view of the structure of the lower steel frame and the tower.

[0015] Numbering in the diagram: 1~Tower leg foundation, 2~Concrete pile, 3~Bearing pile, 4~Adjustable bearing component, 5~Lower flange, 6~Upper flange, 7~Connecting bolt, 8~Short tower leg, 9~Long tower leg, 10~Tower base, 11~Positioning column, 12~Hinged seat, 13~Diagonal tie rod, 14~Auxiliary tie rod, 15~Anchor rod, 16~Lower pressure steel frame, 17~Upper pressure steel frame, 18~Locking screw, 19~Tethering screw, 20~Traction component, 21~Reinforcing rod. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0017] like Figures 1-4 The transmission line tower foundation shown is suitable for steep terrain and includes a tower leg foundation 1, short tower legs 8, and long tower legs 9. The short tower legs 8 and long tower legs 9 are respectively installed on the slope via the tower leg foundation 1. The tops of the short tower legs 8 and long tower legs 9 are flush, and a tower base 10 is connected to their tops, making the short tower legs 8, long tower legs 9, and tower base 10 a whole. A tower seat is installed on the tower base 10 for installing the tower. A positioning post 11 is embedded in the slope at the center directly below the tower base 10, so that the tower leg foundation 1 and positioning post 11 are arranged in a cross shape. Diagonal tie rods 13 are installed on the positioning post 11 to connect each short tower leg 8 and long tower leg 9. Auxiliary tie rods 14 are installed on the tower base 10 and / or each short tower leg 8. The auxiliary tie rods 14 are preferably steel wire ropes, and the lower end of the auxiliary tie rods 14 is fixed in the slope by anchor rods 15.

[0018] The tower leg foundation 1 includes concrete piles 2, bearing piles 3, and bearing adjustment components 4. The lower part of the bearing piles 3 is coaxially fixed in the concrete piles 2. The bearing piles 3 are directly cast in the concrete piles 2, which are buried in the slope. The bearing adjustment components 4 are integrally formed on the top of the bearing piles 3. The bearing piles 3 can effectively increase the tower leg difference of the transmission tower, so that it can better fit the original ground. This effectively avoids earthwork excavation caused by insufficient tower leg difference, which is conducive to soil and water conservation in mountainous areas and reduces the risk of soil erosion and landslides in the tower location area.

[0019] Furthermore, in order to enhance the anchoring effect, the concrete pile 2 is designed with a conical structure that is larger at the bottom and smaller at the top.

[0020] The aforementioned adjusting component 4 includes a lower flange 5, an upper flange 6, and connecting bolts 7. The lower flange 5 is fixedly installed on the top of the bearing pile 3, and the upper flange 6 is fixedly installed on the bottom of the short tower leg 8 and the long tower leg 9, respectively. The connecting bolts 7 connect the lower flange 5 and the upper flange 6 into one piece. The upper surface of the upper flange 6 has an integrally formed tower leg mounting seat. The lower surface of the lower flange 5 and the upper surface of the upper flange 6 are respectively provided with radially protruding reinforcing ribs. When the tower tilts or shifts, the distance between the lower flange 5 and the upper flange 6 can be adjusted to lift the short tower leg 8 or the long tower leg 9 on the tilted side and lower the short tower leg 8 or the long tower leg 9 on the opposite side of the tilt, thereby achieving balance adjustment and eliminating the tower tilt problem.

[0021] By combining tower leg foundation 1, short tower leg 8, and long tower leg 9, and by adjusting the height of the support member 4 of tower leg foundation 1, the short tower leg 8 and long tower leg 9 can better fit into steep terrain, expand the terrain range that the transmission tower legs can fit into, and reduce earthwork excavation within the tower base area. This solves the problem that existing transmission tower legs cannot fit well into the terrain on steep slopes, requiring the excavation of a large amount of earthwork to build the tower base, which has an adverse impact on soil and water conservation of the tower base.

[0022] Furthermore, the short tower leg 8 and the long tower leg 9 are respectively composed of main material and diagonal material. At least two diagonal materials are set on the main material from bottom to top to enhance the support and load-bearing capacity of the short tower leg 8 and the long tower leg 9.

[0023] The positioning column 11 includes a concrete pile 2, a bearing pile 3, and a hinge seat 12. The lower part of the bearing pile 3 is coaxially fixed in the concrete pile 2. The bearing pile 3 is directly cast in the concrete pile 2, and the concrete pile 2 is buried in the slope. The hinge seat 12 is integrally formed on the top of the bearing pile 3. The specific structure of the hinge seat 12 is a well-known technology that is widely used, so it will not be described in detail.

[0024] The aforementioned tie rod 13 is a spring buffer rod. The upper end of the spring buffer rod is movably hinged to the corresponding short tower leg 8 or long tower leg 9, and the lower end is movably hinged to the hinge seat 12 of the positioning column 11. Through the cooperation of the positioning column 11 and the tie rod 13, the swaying force generated by the tower when the wind is strong, or the vibration force generated by the geological vibration, can be dissipated.

[0025] It also includes a vibration damping mechanism with an all-steel structure. This mechanism comprises a lower steel frame 16, an upper steel frame 17, a locking screw 18, a tension screw 19, and a traction component 20. The lower steel frame 16 is a square structure adapted to the shape of the tower legs, and the upper steel frame 17 is a square structure adapted to the shape of the tower. The lower steel frame 16 is fixed to the upper part of the short tower leg 8 and the long tower leg 9 by the locking screw 18, and the upper steel frame 17 is fixed to the lower part of the tower by the locking screw 18. The tension screw 19 is located between the lower steel frame 16 and the upper steel frame 17, and the traction component 20 is located on either the lower steel frame 16 or the upper steel frame 17. On each beam of 7, the lower end of the traction component 20 is fixedly connected to the positioning column 11. The material of the traction component 20 is steel wire rope. According to the special structure of the tower, which is larger at the bottom and smaller at the top, the lower pressure steel frame 16 and the upper pressure steel frame 17 are fixed to the tower and the tower foundation, and a downward traction force is applied so that the lower pressure steel frame 16 and the upper pressure steel frame 17 are firmly pressed down on the tower. When the tower is affected by external forces such as wind, the traction component 20 with a certain elasticity steel wire rope material is used in conjunction with the diagonal tie rod 13 to effectively dissipate the swaying or vibration force, reduce the pulling force between the tower and the cable, improve the bending resistance, and extend the service life of the tower.

[0026] The locking screw 18 is configured in an L-shape, with locking nuts at both ends.

[0027] The tower leg foundation 1 also includes at least one reinforcing rod 21, which is inserted obliquely downward into the concrete pile 2 of the tower leg foundation 1. It is cast integrally with the concrete pile 2 and the two are arranged in an X shape to strengthen the support of the tower leg foundation 1 on the slope, and at the same time play a certain anchoring role for the slope soil.

[0028] It should be noted that, except for the materials specifically mentioned in the text, the materials used for the transmission line tower foundation of this application are all steel, preferably steel pipe or angle steel; the tower is a truss structure; the connection method between the components adopts the conventional connection and fixing method of existing towers. There are usually two short tower legs 8 and two long tower legs 9, but the number of short tower legs 8 and long tower legs 9 should be reasonably selected and used according to actual usage requirements.

Claims

1. A transmission line tower foundation suitable for steep terrain, comprising a tower leg foundation (1), short tower legs (8), and long tower legs (9), wherein short tower legs (8) and long tower legs (9) are respectively installed on the slope through the tower leg foundation (1), characterized in that: The tops of the short tower legs (8) and long tower legs (9) are flush, and the tower base (10) is connected to the top of both. A tower seat is set on the tower base (10), and a positioning column (11) embedded in the slope is set at the center directly below the tower base (10). The tower leg foundation (1) and the positioning column (11) are arranged in a cross shape. The positioning column (11) is provided with a diagonal tie rod (13) to connect each short tower leg (8) and long tower leg (9). An auxiliary tie rod (14) is set on the tower base (10) and / or each short tower leg (8). The lower end of the auxiliary tie rod (14) is embedded in the slope and fixed by an anchor rod (15).

2. The transmission line tower foundation suitable for steep terrain according to claim 1, characterized in that: The tower leg foundation (1) includes a concrete pile (2), a bearing pile (3), and a bearing adjustment component (4). The lower part of the bearing pile (3) is coaxially fixed in the concrete pile (2), and the bearing adjustment component (4) is integrally formed on the top of the bearing pile (3).

3. The transmission line tower foundation suitable for steep terrain according to claim 2, characterized in that: The bearing adjustment component (4) includes a lower flange (5), an upper flange (6), and connecting bolts (7). The lower flange (5) is fixed on the top of the bearing pile (3), and the upper flange (6) is fixed on the bottom of the short tower leg (8) and the long tower leg (9) respectively. The connecting bolts (7) connect the lower flange (5) and the upper flange (6) into one piece. The upper surface of the upper flange (6) is provided with a tower leg mounting seat.

4. The transmission line tower foundation suitable for steep terrain according to claim 1, characterized in that: The positioning column (11) includes a concrete pile (2), a bearing pile (3), and a hinge seat (12). The lower part of the bearing pile (3) is coaxially fixed in the concrete pile (2). The bearing pile (3) is directly cast in the concrete pile (2). The hinge seat (12) is integrally formed on the top of the bearing pile (3).

5. The transmission line tower foundation suitable for steep terrain according to claim 1, characterized in that: The aforementioned tie rod (13) is a spring buffer rod. The upper end of the spring buffer rod is movably hinged to the corresponding short tower leg (8) or long tower leg (9), and the lower end is movably hinged to the positioning column (11). The positioning column (11) is fixedly provided with a hinge seat (12) for the tie rod (13).

6. The transmission line tower foundation suitable for steep terrain according to claim 1, characterized in that: It also includes a vibration damping mechanism with an all-steel structure. The vibration damping mechanism includes a lower pressure steel frame (16), an upper pressure steel frame (17), a locking screw (18), a traction screw (19), and a traction component (20). The lower pressure steel frame (16) is set in a square structure that matches the shape of the tower leg. The upper pressure steel frame (17) is set in a square structure that matches the shape of the tower. The lower pressure steel frame (16) is fixedly set on the upper part of the short tower leg (8) and the long tower leg (9) by the locking screw (18). The upper pressure steel frame (17) is fixedly set on the lower part of the tower by the locking screw (18). The traction screw (19) is set between the lower pressure steel frame (16) and the upper pressure steel frame (17). The traction component (20) is set on each beam of the lower pressure steel frame (16) or the upper pressure steel frame (17). The lower end of the traction component (20) is fixedly connected to the positioning column (11).

7. The transmission line tower foundation suitable for steep terrain according to claim 6, characterized in that: The locking screw (18) is configured in an L-shape, with locking nuts at both ends.

8. The transmission line tower foundation suitable for steep terrain according to claim 1, characterized in that: The tower leg foundation (1) also includes at least one reinforcing rod (21), which is inserted obliquely downward into the concrete pile (2) of the tower leg foundation (1), and the two are arranged in an X shape.

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