Anti-frost heaving power transmission line foundation device

Abstract

The utility model relates to the technical field of power transmission facilities, in particular to an anti-frost heaving power transmission line foundation device. The utility model provides an anti-frost heaving power transmission line foundation device, which comprises a conical pipe filled with concrete; the foundation bolt is poured into the conical pipe by the concrete, and a part of the foundation bolt extends out of the small end of the conical pipe; the bottom plate is provided with a first main plate surface and a second main plate surface which are opposite to each other, and the large end of the conical pipe is connected to the first main plate surface; and the multiple anchor rods are arranged, and the multiple anchor rods are connected to the second main plate face. By means of the arrangement, the anti-frost-heaving power transmission line foundation device does not need cast-in-place concrete, and the problems that in the prior art, a foundation device is inconvenient to construct, and construction quality is difficult to guarantee are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission facilities, in particular to a frost-heavy-proof power transmission line foundation device. Background Art

[0002] Frozen soil is divided into permafrost and seasonal frozen soil, and is divided into five levels according to the degree of frost heave: no frost heave, weak frost heave, frost heave, strong frost heave, and extra-strong frost heave. Overhead transmission lines have the characteristics of long routes, wide crossing areas, and complex geology. It is often impossible to avoid frozen soil areas during route planning, so the anti-frost heave design of the basic equipment of the transmission line is very important.

[0003] When the soil freezes, the frost heave force on the foundation device is divided into vertical normal frost heave force and tangential frost heave force, among which: the normal frost heave force refers to the upward reaction force generated by the soil under the bottom of the foundation device due to frost heave, which will cause the foundation device to be pulled up; the tangential frost heave force is the upward force generated by the frozen soil on the side of the main column of the foundation device, which may also cause the foundation device to be pulled up, posing a safety hazard to the transmission line foundation device.

[0004] In order to realize the anti-freezing expansion function of the foundation device of the power transmission line, the foundation device is usually cast into a cone in the prior art. However, the foundation device in the prior art is cast on site, which leads to inconvenience in construction, and the temperature in the frozen land area is extremely low in winter, the concrete curing is difficult, and the construction quality is difficult to guarantee. Utility Model Content

[0005] The utility model provides a frost-heavy-proof transmission line foundation device, which does not require on-site concrete pouring, thus avoiding the problems of inconvenient construction of the foundation device and difficulty in ensuring the construction quality in the prior art.

[0006] The utility model provides a frost-heavy prevention power transmission line foundation device, comprising:

[0007] A conical tube, the interior of which is filled with concrete;

[0008] An anchor bolt is cast in the tapered tube by the concrete, and a portion of the anchor bolt extends out of the small end of the tapered tube;

[0009] A bottom plate having a first main plate surface and a second main plate surface opposite to each other, the large end of the tapered tube being connected to the first main plate surface;

[0010] The anchor rods are provided in plurality, and the plurality of anchor rods are connected to the second main board surface.

[0011] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the anchor rod comprises:

[0012] Rod body;

[0013] The anchor sheet is arranged on the rod body in a spiral direction with the rod body as the axis.

[0014] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the bottom end of the rod body is arranged as a conical structure.

[0015] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the bottom plate is provided with a plurality of through holes along its circumference, and the top ends of the plurality of anchor rods extend into the through holes one by one and are welded to the edges of the through holes.

[0016] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, a connecting plate is arranged at the top end of the anchor rod, the area of ​​the connecting plate is larger than the area of ​​the through hole, and the connecting plate is welded to the edge of the through hole.

[0017] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the bottom plate is arranged as a square structure, and the anchor rods are evenly connected at positions close to the four sides of the bottom plate.

[0018] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, a plurality of reinforcing rib structures are connected between the conical tube and the bottom plate.

[0019] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the reinforcing rib structure is arranged as a trapezoidal structure, and two sides of the trapezoidal structure are respectively connected to the conical tube and the bottom plate.

[0020] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the conical tube, the anchor bolts, the bottom plate and the anchor rod are all provided with an anti-rust layer.

[0021] According to the anti-freezing and heaving power transmission line foundation device provided by the utility model, the conical tube, the bottom plate and the anchor rod are connected by welding.

[0022] The utility model provides a frost heave prevention power transmission line foundation device, including a conical tube, anchor bolts, a base plate and anchor rods, wherein the interior of the conical tube is filled with concrete, the anchor bolts are cast in the conical tube by concrete, and a portion of the anchor bolts extends out of the small end of the conical tube so as to be connected to the power transmission device on the ground. The base plate has a first main board surface and a second main board surface relative to each other, the large end of the conical tube is connected to the first main board surface, a plurality of anchor rods are provided, and a plurality of anchor rods are connected to the second main board surface. When the utility model provides a foundation device, the height of the conical tube should be greater than the standard freezing depth of the area, so that the portion below the base plate is buried below the standard freezing depth. The conical tube has a certain taper, which can reduce the influence of frozen soil shear force, and the foundation device can be further reinforced under the action of the anchor rod to prevent the reinforcement device from being pulled up. In the utility model, its various components can be prefabricated in the factory, which can ensure the construction quality. There is no need to worry about concrete maintenance during winter construction. Compared with traditional construction methods, the utility model can reduce the amount of earth excavation, reduce the amount of earth excavation and foundation engineering, reduce the cost of foundation engineering, speed up construction, and save foundation construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of a frost-heavy protection power transmission line foundation device in an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the anchor rod structure in the embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the bottom plate structure in the embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the structure of the tapered tube and the anchor bolt in the embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of the reinforcing rib structure in an embodiment of the utility model.

[0029] Reference numerals:

[0030] 11. conical tube; 12. anchor bolt; 13. reinforcing rib structure; 14. bottom plate; 15. anchor rod; 151. rod body; 152. anchor plate; 153. connecting plate; 141. through hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Please refer to Figure 1-Figure 5 The anti-freezing and heaving power transmission line foundation device provided in this embodiment includes a conical tube 11, anchor bolts 12, a base plate 14 and an anchor rod 15.

[0035] The conical tube 11 is filled with concrete; the anchor bolt 12 is cast in the conical tube 11 by concrete, and a part of the anchor bolt 12 extends out of the small end of the conical tube 11; the bottom plate 14 has a first main board surface and a second main board surface opposite to each other, and the large end of the conical tube 11 is connected to the first main board surface; a plurality of anchor rods 15 are provided, and a plurality of anchor rods 15 are connected to the second main board surface.

[0036] In some embodiments, the conical tube 11 is made of steel tube, specifically square steel tube or round steel tube, the cone column slope of the conical tube 11 is 9°, and the lower part is large and the upper part is small, and the upper end opening is small enough to place the anchor bolt 12. The height of the conical tube 11 should be greater than the standard freezing depth of the area where the power transmission line is located, and greater than the designed anchor length of the anchor bolt 12, that is, the conical tube 11 should be high enough to anchor the anchor bolt 12 inside the conical tube 11. The conical tube 11 adopts external galvanizing for corrosion protection, and the material grade can be Q235, Q355, Q390 or Q420, and the steel grade is not lower than B grade. When the temperature is lower than 40°C, the steel grade is not lower than C grade.

[0037] In some embodiments, the bottom of the conical tube 11, that is, the large end of the conical tube 11 and the bottom plate 14 can be connected together by welding. The material of the bottom plate 14 can be the same as that of the conical tube 11, and the outside can also be galvanized for corrosion protection.

[0038] The anchor bolts 12 are cast in the concrete in the tapered tube 11. In some embodiments, after the anchor bolts 12 are positioned, concrete is cast in the tapered tube 11. The concrete strength grade may be C30 or above. The purpose of filling the concrete is to fix the anchor bolts 12 inside the tapered steel tube. In particular, the anchor bolts 12 and the filling concrete can be prefabricated in a factory to save on-site construction time and ensure the curing quality of the concrete.

[0039] Of course, in other embodiments, the anchor bolts 12 may also be cast in the tapered steel pipe at the construction site.

[0040] It should be noted that the base plate 14 and the anchor rods 15 should be buried below the standard freezing depth. A plurality of anchor rods 15 are provided at the lower portion of the base plate 14 . The anchor rods 15 can be driven into the soil to prevent the frozen soil below the base plate 14 from lifting the foundation device.

[0041] With such a configuration, the anti-freeze heave power transmission line foundation device provided in this embodiment, after being buried underground, the anchor bolts 12 are exposed on the ground to facilitate the connection of the power transmission line device. The tapered tube 11 has a certain taper to reduce the force of frozen soil acting on the tapered tube 11 and the upward component. At the same time, due to the action of the bottom plate 14 and the anchor rod 15, the foundation device can be further prevented from being lifted up. Since each component in this embodiment can be prefabricated in the factory, the construction quality can be guaranteed, and there is no need to worry about the concrete maintenance problem during winter construction. In addition, compared with the traditional construction method, this embodiment can reduce the amount of earth excavation, reduce the amount of earth excavation and the amount of foundation body engineering, reduce the cost of the foundation body engineering, and can speed up the construction, saving the foundation construction period.

[0042] In a further embodiment, the anchor rod 15 includes a rod body 151 and an anchor sheet 152, wherein the anchor sheet 152 is arranged on the rod body 151 in a spiral direction with the rod body 151 as the axis. In some embodiments, the anchor sheet 152 can be made of a steel plate, which can be connected to the rod body 151 by welding or casting, and the anchor sheet 152 is spirally arranged on the rod body 151. When the anchor rod 15 is buried underground, the anchor rod 15 can be buried underground by rotating the anchor rod 15 under the guidance of the anchor sheet 152, and the anchor sheet 152 can play a reinforcing role to prevent the anchor rod 15 from being pulled up. In a further embodiment, the bottom end of the rod body 151 is set as a conical structure, so that the anchor rod 15 is convenient to be screwed into the ground.

[0043] In some embodiments, the bottom plate 14 is provided with a plurality of through holes 141 along its circumference, and the top ends of the plurality of anchor rods 15 extend into the through holes 141 one by one and are welded to the edges of the through holes 141. Furthermore, a connecting plate 153 is provided at the top end of the anchor rod 15, the area of ​​the connecting plate 153 is larger than the area of ​​the through hole 141, and the connecting plate 153 is welded to the edge of the through hole 141.

[0044] During construction, the tip of the anchor rod 15 can first be passed through the through hole 141 on the base plate 14, and then the anchor rod 15 can be rotated to screw into the ground until the connecting plate 153 at the top of the anchor rod 15 contacts the edge of the through hole 141, and then the connecting plate 153 can be welded to the edge of the through hole 141.

[0045] In some embodiments, the bottom plate 14 is configured as a square structure, and the anchor rods 15 are evenly connected to positions near the four sides of the bottom plate 14. The number of through holes 141 on the bottom plate 14 can be specifically set according to the number of anchor rods 15. For example, three through holes 141 can be set on each side of the bottom plate 14.

[0046] In a further embodiment, in order to make the connection between the conical tube 11 and the bottom plate 14 more reliable, a plurality of reinforcing rib structures 13 are connected between the conical tube 11 and the bottom plate 14. The reinforcing ribs can be rib plates, which are respectively connected to the conical tube 11 and the bottom plate 14 by welding.

[0047] In some embodiments, in order to avoid the problem of welding stress, the reinforcing rib structure 13 is set as a trapezoidal structure, and the two sides of the trapezoidal structure are respectively connected to the tapered tube 11 and the bottom plate 14. In this way, the connection angle position of the tapered tube 11 and the bottom plate 14 will not be welded to the reinforcing rib, avoiding the problem of stress concentration at this position.

[0048] The number of reinforcing ribs may be multiple, for example, 3-6, and the multiple reinforcing ribs are evenly distributed around the conical tube 11 , thereby improving the connection reliability between the conical tube 11 and the bottom plate 14 .

[0049] In a further embodiment, the tapered tube 11, the anchor bolts 12, the bottom plate 14 and the anchor rod 15 are all provided with an anti-rust layer. Specifically, a galvanized layer can be provided on the tapered tube 11, the anchor bolts 12, the bottom plate 14 and the anchor rod 15 to prevent corrosion or oxidation.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A frost-proof transmission line foundation device, characterized in that: include: A conical tube (11) filled with concrete; An anchor bolt (12) is cast in the tapered tube (11) by the concrete, and a portion of the anchor bolt (12) extends out of the small end of the tapered tube (11); A bottom plate (14) having a first main plate surface and a second main plate surface opposite to each other, and a large end of the conical tube (11) is connected to the first main plate surface; The anchor rods (15) are arranged in plurality, and the plurality of anchor rods (15) are connected to the second main board surface.

2. The anti-freezing and frost-heaving power transmission line foundation device according to claim 1, characterized in that: The anchor rod (15) comprises: Rod body (151); The anchor sheet (152) is arranged on the rod body (151) in a spiral direction with the rod body (151) as the axis.

3. The anti-freezing and heaving power transmission line foundation device according to claim 2, characterized in that: The bottom end of the rod body (151) is configured as a conical structure.

4. The anti-freezing and heaving power transmission line foundation device according to claim 1, characterized in that: The bottom plate (14) is provided with a plurality of through holes (141) along its circumference, and the top ends of the plurality of anchor rods (15) extend into the through holes (141) in a one-to-one correspondence and are welded to the edges of the through holes (141).

5. The anti-freezing and heaving power transmission line foundation device according to claim 4, characterized in that: A connecting plate (153) is provided at the top end of the anchor rod (15); the area of ​​the connecting plate (153) is larger than the area of ​​the through hole (141); and the connecting plate (153) is welded to the edge of the through hole (141).

6. The anti-freezing and heaving power transmission line foundation device according to claim 1, characterized in that: The bottom plate (14) is configured as a square structure, and the anchor rods (15) are evenly connected at positions close to four sides of the bottom plate (14).

7. The anti-freezing and heaving power transmission line foundation device according to claim 1, characterized in that: A plurality of reinforcing rib structures (13) are connected between the conical tube (11) and the bottom plate (14).

8. The anti-freezing and heaving power transmission line foundation device according to claim 7, characterized in that: The reinforcing rib structure (13) is configured as a trapezoidal structure, and two side edges of the trapezoidal structure are respectively connected to the conical tube (11) and the bottom plate (14).

9. The anti-freezing and heaving power transmission line foundation device according to claim 1, characterized in that: The conical tube (11), the anchor bolt (12), the base plate (14) and the anchor rod (15) are all provided with an anti-rust layer.

10. The anti-freezing and heaving power transmission line foundation device according to claim 1, characterized in that: The conical tube (11), the bottom plate (14) and the anchor rod (15) are connected by welding.

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