Fiber reinforced polyurethane composite material tower foundation structure and setting method

Abstract

The invention relates to a fiber reinforced polyurethane composite material tower foundation structure and a setting method, and relates to the technical field of tower construction, the fiber reinforced polyurethane composite material tower foundation structure comprises a tower body and a foundation pit, the bottom of the tower body is arranged at the position of the foundation pit, a concrete cushion layer is arranged at the bottom of the foundation pit, concrete protection walls are arranged on the side walls of the periphery in the foundation pit, and a fiber reinforced polyurethane composite material is arranged in the concrete protection walls. A gravel layer is arranged in the foundation pit, the gravel layer is arranged in the concrete protection wall, and a reinforcing layer used for reinforcing the tower pole body is arranged on the upper portion of the foundation pit. The tower pole has the effect of improving the impact resistance of the tower pole.

Description

Technical Field

[0001] The present application relates to the technical field of pole tower construction, and in particular to a fiber reinforced polyurethane composite pole tower foundation structure and a setting method. Background Art

[0002] Fiber reinforced polyurethane composite towers are a new type of tower structure used in the power industry, especially in distribution lines, in recent years. Compared with towers made of traditional materials (such as steel and concrete), polyurethane composite towers have the following significant advantages: Light weight: The weight of the polyurethane composite tower is 1 / 4 of that of the traditional steel tower. It is easy to transport and install quickly, especially in mountainous areas, woodlands, tidal flats, and situations where mechanical construction conditions are not available. Construction can be completed quickly by manual labor.

[0003] Corrosion resistance: Traditional steel towers are prone to corrosion during use, and the maintenance and upkeep costs are high in later use. Polyurethane composite towers are corrosion-resistant, aging-resistant, radiation-resistant, and have low maintenance costs.

[0004] Good wind and earthquake resistance: The polyurethane composite pole tower utilizes the characteristics of the material and can meet the requirements of anti-yielding instability through a unique winding technology. The polyurethane composite pole tower manufactured using the multi-axis variable diameter winding process has a bending strength 2.5 times higher than that of a traditional steel tower.

[0005] Fiber reinforced polyurethane composite pole towers are light in texture and strong in toughness, and the corresponding construction method of "fiber reinforced polyurethane composite pole tower foundation" is also being explored.

[0006] In the related art, during the construction of the fiber reinforced polyurethane composite tower foundation, a foundation pit is usually dug on the foundation, the "composite tower" is placed in the foundation pit, and then the space between the tower and the foundation pit is filled with concrete. However, this method has the following disadvantages: the rigidity of the concrete in the foundation pit is too strong, which is not conducive to buffering the impact force encountered by the tower, and the tower and the tower foundation are easily damaged. Summary of the invention

[0007] In order to improve the impact resistance of the tower pole, the present application provides a fiber reinforced polyurethane composite tower foundation structure and a setting method.

[0008] First aspect The fiber-reinforced polyurethane composite tower foundation structure provided in this application adopts the following technical solution: A fiber reinforced polyurethane composite tower foundation structure comprises a tower body and a foundation pit, wherein the bottom of the tower body is placed at the foundation pit, a concrete cushion layer is provided at the bottom of the foundation pit, concrete retaining walls are provided on the side walls around the foundation pit, a sand and gravel layer is provided in the foundation pit, the sand and gravel layer is placed in the concrete retaining wall, and a reinforcement layer for reinforcing the tower body is provided on the upper part of the foundation pit.

[0009] By adopting the above technical solution, when installing the fiber reinforced polyurethane composite tower, a foundation pit is excavated at the installation position of the tower body, and the bottom of the foundation pit is padded with concrete to form a concrete cushion layer, and concrete is applied around the foundation pit to form a concrete retaining wall. When fixing the tower, the tower is first erected in the foundation pit, and then filled with sand and gravel, the root of the tower is wrapped with sand and gravel, and then water is added to the foundation pit. At the beginning, as the water flows in, the sand in the foundation pit will settle with the water. As the density of the sand becomes higher and higher, the sand in the foundation pit will no longer settle, and then the upper part of the tower body is reinforced with a reinforcement layer.

[0010] Generally speaking, the sand in the foundation pit has a certain elasticity, which is conducive to absorbing the impact force exerted on the pole tower by the outside world. The sand has a large friction force and has a strong wrapping effect on the base of the pole tower. At the same time, adding larger sand and gravel into the sand to form a sand and gravel layer will increase the friction and holding force of the sand in the foundation pit on the base of the pole tower. This can reduce the rigidity of the tower pole, improve the impact resistance of the tower pole, and play a protective role on the tower pole.

[0011] Optionally, the reinforcement layer is set to be a first concrete layer, the first concrete layer is placed on the upper part of the sand and gravel layer, and the upper part of the first concrete layer is placed outside the foundation pit.

[0012] By adopting the above technical solution, the upper part of the foundation pit can be sealed by the first concrete layer, thereby improving the stability of the tower body in the foundation pit.

[0013] Optionally, the reinforcement layer is configured as a first flange, which is fixedly connected to the tower body, and a plurality of rock foundation anchors are buried in the sand and gravel layer. The upper parts of the rock foundation anchors are passed through and slidably connected to the first flange, and each of the rock foundation anchors is threadedly connected to two first locking nuts, which are respectively placed on the upper and lower sides of the first flange and tightly pressed against the first flange.

[0014] By adopting the above technical solution, multiple rock foundation anchors can be set around the tower body, so that the rock foundation anchors support the tower body through the first flange and the first locking nut, thereby improving the connection strength between it and the first concrete layer and limiting its tilting tendency.

[0015] Optionally, a second concrete layer is provided around the rock foundation anchor rod, the lower portion of the rock foundation anchor rod is placed in the second concrete layer, and the second concrete layer is placed in the sand and gravel layer.

[0016] By adopting the above technical solution, the rock foundation anchor rods can be reinforced through the second concrete layer to improve the stability of the rock foundation anchor rods.

[0017] Optionally, the reinforcement layer is configured as a counterweight pile, the counterweight pile is placed on the upper part of the foundation pit, and a connecting component for connecting the counterweight pile and the tower body is provided between the counterweight pile and the tower body.

[0018] By adopting the above technical solution, the connection between the counterweight pile and the tower body can be achieved through the connecting assembly, and then the position of the tower can be fixed through the static friction between the counterweight pile and the upper part of the foundation pit.

[0019] Optionally, the connecting assembly includes a second flange fixedly connected to the tower body and a plurality of concrete anchor rods, the lower portion of the concrete anchor rods being buried in the counterweight piles, the upper portion of the concrete anchor rods being passed through and slidably connected to the second flange plate, the upper portion of the concrete anchor rods being threadedly connected to a second fixing nut, and the second fixing nut being tightly pressed against the second flange plate.

[0020] By adopting the above technical solution, the connection between the second flange and the concrete anchor rod can be achieved through the two second nuts.

[0021] Optionally, a cavity is opened at the top of the tower body, and a tower damper is installed in the cavity.

[0022] By adopting the above technical solution, a tower damper can be set at the top of the tower body, and when the tower body shakes, the tower damper can offset the shaking trend of the tower body and reduce the shaking amplitude of the tower body.

[0023] Second aspect The method for setting up a fiber-reinforced polyurethane composite material pole tower foundation structure, using the above-mentioned fiber-reinforced polyurethane composite material pole tower foundation structure, comprises the following steps: S1. A foundation pit is excavated at the installation location of the tower body, and concrete is used to pad the bottom of the foundation pit to form a concrete cushion layer; S2. Concrete retaining walls are set on the side walls around the foundation pit; S3. The pole tower is erected in the foundation pit, and then filled with sand and gravel to wrap the root of the pole tower. Then water is added to the foundation pit. As the water flows in, the sand in the foundation pit will settle with the water. As the density of the sand increases, the sand in the foundation pit will no longer settle, forming a sand and gravel layer. S4. Seal the upper part of the foundation pit with concrete to form the first concrete layer.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Generally speaking, sand has a certain elasticity, which is conducive to absorbing the impact force exerted on the tower by the outside world. Sand has a large friction force and has a strong wrapping effect on the root of the tower, which can reduce the rigidity of the tower, improve the impact resistance of the tower, and play a protective role on the tower; 2. The upper part of the foundation pit can be sealed by the first concrete layer, thereby improving the stability of the tower body in the foundation pit; 3. A plurality of rock foundation anchor rods may be arranged around the tower body so that the rock foundation anchor rods support the tower body through the first flange plate and the first locking nut structure, thereby improving the connection strength between the tower body and the first concrete layer and limiting its tilting tendency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 3 It is a schematic diagram of the overall structure of Example 3 of the present application.

[0026] In the figure, 1, tower body; 11, cavity; 12, tower damper; 2, foundation pit; 3, concrete cushion layer; 4, concrete retaining wall; 5, gravel layer; 6, reinforcement layer; 61, first concrete layer; 62, first flange; 63, rock foundation anchor; 64, first locking nut; 65, second concrete layer; 66, counterweight pile; 67, connection assembly; 671, second flange; 672, concrete anchor; 673, second fixing nut. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0028] First aspect Example 1 Reference Figure 1A foundation pit 2 is opened on the ground, and the fiber reinforced polyurethane composite tower foundation structure includes a tower body 1 and a foundation pit 2. The bottom of the tower body 1 is placed at the foundation pit 2. A concrete cushion layer 3 is provided at the bottom of the foundation pit 2. Concrete retaining walls 4 are provided on the side walls around the foundation pit 2. A sand and gravel layer 5 is provided in the foundation pit 2. The sand and gravel layer 5 is placed in the concrete retaining wall 4. A reinforcement layer 6 for reinforcing the tower body 1 is provided on the upper part of the foundation pit 2. The reinforcement layer 6 in this embodiment is set as a first concrete layer 61. The lower part of the first concrete layer 61 is placed on the upper part of the sand and gravel layer 5 in the foundation pit 2. The upper part of the first concrete layer 61 is placed outside the foundation pit 2 and its area is larger than the area of ​​the pit mouth of the foundation pit 2. The tower body 1 is fixedly connected to the first concrete layer 61.

[0029] When installing the fiber reinforced polyurethane composite tower, a foundation pit 2 is excavated at the installation position of the tower body 1, the bottom of the foundation pit 2 is padded with concrete to form a concrete cushion 3, and concrete is applied around the foundation pit 2 to form a concrete protective wall 4.

[0030] When fixing the pole tower, first erect the pole tower in the foundation pit 2, then fill the foundation pit 2 with sand and gravel, wrap the root of the pole tower with the sand and gravel, and then add water into the foundation pit 2. At the beginning, as the water flows in, the sand in the foundation pit 2 will settle with the water, and as the density of the sand becomes higher and higher, the sand in the foundation pit 2 will no longer settle, and then the upper part of the foundation pit 2 can be sealed and reinforced by the first concrete layer 61, thereby completing the installation of the tower body 1 in the foundation pit 2.

[0031] At the same time, in order to reduce the amplitude of the shaking of the tower body 1 after being subjected to external force, a cavity 11 is opened at the top of the tower body 1, and a tower damper 12 is installed in the cavity 11. When the tower body 1 shakes, the tower damper 12 can offset the shaking tendency of the tower body 1.

[0032] Example 2 The difference from Example 1 is: Figure 2 The reinforcement layer 6 is configured as a first flange 62, the first flange 62 is configured around the tower body 1 and the first flange 62 is fixedly connected to the tower body 1, a plurality of rock foundation anchor rods 63 are buried in the gravel layer 5, and the plurality of rock foundation anchor rods 63 are equidistantly configured around the axial direction of the tower body 1. At the same time, in order to improve the stability of the rock foundation anchor rods 63 in the gravel layer 5, a second concrete layer 65 is poured around the rock foundation anchor rods 63, the lower part of the rock foundation anchor rods 63 is placed in the second concrete layer 65, and the second concrete layer 65 is placed in the gravel layer 5.

[0033] The rock foundation anchor rods 63 correspond to the flange holes of the first flange plate 62 one by one, and the upper part of the rock foundation anchor rods 63 passes through and is slidably connected to the first flange plate 62. Two first locking nuts 64 are threadedly connected to each rock foundation anchor rod 63. The two first locking nuts 64 are respectively placed on the upper and lower sides of the first flange plate 62 and are tightly pressed against the first flange plate 62.

[0034] Example 3 The difference from Example 1 is: Figure 3 The reinforcement layer 6 is configured as a counterweight pile 66 , and the counterweight pile 66 is placed on the upper part of the foundation pit 2 . A connecting component 67 for connecting the counterweight pile 66 and the tower body 1 is provided between the counterweight pile 66 and the tower body 1 .

[0035] The connection assembly 67 includes a plurality of concrete anchor rods 672 and a second flange 671 fixedly connected to the tower body 1. The lower portion of the concrete anchor rod 672 is buried in the counterweight pile 66, the upper portion of the concrete anchor rod 672 is passed through and slidably connected to the second flange 671, and the upper portion of the concrete anchor rod 672 is threadedly connected with a second fixing nut 673, and the second fixing nut 673 corresponds to the concrete anchor rod 672 one by one. The second fixing nut 673 is pressed against the second flange 671, thereby achieving the fixation between the second flange 671 and the concrete anchor rod 672 through the two second fixing nuts 673.

[0036] Second aspect The present application also discloses a method for setting up a fiber-reinforced polyurethane composite material pole tower foundation structure. The method for setting up a fiber-reinforced polyurethane composite material pole tower foundation structure, using the above-mentioned fiber-reinforced polyurethane composite material pole tower foundation structure, comprises the following steps: S1, dig a foundation pit 2 at the installation position of the tower body 1, and pad the bottom of the foundation pit 2 with concrete to form a concrete cushion layer 3; S2, setting concrete retaining wall 4 on the side walls around the foundation pit 2; S3, the pole tower is erected in the foundation pit 2, and then filled with sand and gravel in the foundation pit 2, the root of the pole tower is wrapped with the sand and gravel, and then water is added to the foundation pit 2. As the water flows in, the sand in the foundation pit 2 will settle with the water. As the density of the sand increases, the sand in the foundation pit 2 will no longer settle, forming a sand and gravel layer 5; S4. Seal the upper part of the foundation pit 2 with concrete to form a first concrete layer 61.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fiber-reinforced polyurethane composite tower foundation structure, characterized in that: The invention comprises a tower body (1) and a foundation pit (2), wherein the bottom of the tower body (1) is placed at the foundation pit (2), a concrete cushion layer (3) is provided at the bottom of the foundation pit (2), concrete retaining walls (4) are provided on the side walls around the foundation pit (2), a gravel layer (5) is provided in the foundation pit (2), the gravel layer (5) is placed in the concrete retaining wall (4), and a reinforcement layer (6) for reinforcing the tower body (1) is provided on the upper part of the foundation pit (2).

2. The fiber reinforced polyurethane composite tower foundation structure according to claim 1, characterized in that: The reinforcement layer (6) is configured as a first concrete layer (61), the first concrete layer (61) is placed on the upper part of the sandstone layer (5), and the upper part of the first concrete layer (61) is placed outside the foundation pit (2).

3. The fiber reinforced polyurethane composite tower foundation structure according to claim 1, characterized in that: The reinforcement layer (6) is configured as a first flange (62), the first flange (62) being fixedly connected to the tower body (1), a plurality of rock foundation anchor rods (63) being embedded in the gravel layer (5), the upper portion of the rock foundation anchor rods (63) being passed through and slidably connected to the first flange (62), each of the rock foundation anchor rods (63) being threadedly connected to two first locking nuts (64), the two first locking nuts (64) being respectively disposed on the upper and lower sides of the first flange (62) and being tightly pressed against the first flange (62).

4. The fiber reinforced polyurethane composite tower foundation structure according to claim 3, characterized in that: A second concrete layer (65) is provided around the rock foundation anchor rod (63), the lower part of the rock foundation anchor rod (63) is placed in the second concrete layer (65), and the second concrete layer (65) is placed in the sandstone layer (5).

5. The fiber reinforced polyurethane composite tower foundation structure according to claim 1, characterized in that: The reinforcement layer (6) is configured as a counterweight pile (66), the counterweight pile (66) is placed on the upper part of the foundation pit (2), and a connecting component (67) for connecting the counterweight pile (66) and the tower body (1) is provided between the counterweight pile (66) and the tower body (1).

6. The fiber reinforced polyurethane composite tower foundation structure according to claim 5, characterized in that: The connection assembly (67) comprises a plurality of concrete anchor rods (672) and a second flange (671) fixedly connected to the tower body (1); the lower portion of the concrete anchor rods (672) is buried in the counterweight pile (66); the upper portion of the concrete anchor rods (672) is passed through and slidably connected to the second flange (671); the upper portion of the concrete anchor rods (672) is threadedly connected to a second fixing nut (673); and the second fixing nut (673) is tightly pressed against the second flange (671).

7. The fiber reinforced polyurethane composite tower foundation structure according to claim 1, characterized in that: A cavity (11) is provided at the top of the tower body (1), and a tower damper (12) is installed in the cavity (11).

8. A method for installing a fiber-reinforced polyurethane composite tower foundation structure, characterized in that: The fiber reinforced polyurethane composite tower foundation structure as claimed in claim 2 comprises the following steps: S1, digging a foundation pit (2) at the installation location of the tower body (1), and padding the bottom of the foundation pit (2) with concrete to form a concrete cushion layer (3); S2, setting concrete retaining walls (4) on the side walls around the foundation pit (2); S3, the pole tower is erected in the foundation pit (2), and then the foundation pit (2) is filled with sand and gravel, the root of the pole tower is wrapped with the sand and gravel, and then water is added to the foundation pit (2). As the water flows in, the sand in the foundation pit (2) will settle with the water. As the density of the sand increases, the sand in the foundation pit (2) will no longer settle, forming a sand and gravel layer (5); S4. Use concrete to seal the upper part of the foundation pit (2) to form a first concrete layer (61).

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