Anti-freezing and anti-cracking concrete pole

Abstract

The utility model discloses an anti -freezing anti -crack concrete electric pole, including electric pole body, electric pole body from below to top gradually includes embedding portion, expansion section and straight rod portion, embedding portion, expansion section and straight rod portion are hollow, embedding portion is inverted conical, expansion section is inverted round table shape, straight rod portion is long circular cylinder, and expansion section forms a plurality of recess groove, and recess groove is equipped with fastening device in the sleeve. The utility model discloses through with electric pole body is divided into embedding portion, expansion section and straight rod portion and with embedding portion is inverted conical, expansion section is inverted round table shape, make water or surrounding soil when in frozen and expand soil body frost heaving and pull up, convert into annular compression stress to vertical frost heaving force, avoid electric pole body bottom and pull crack.

Description

Technical Field

[0001] This utility model relates to the field of concrete poles, and in particular to a frost-resistant and crack-resistant concrete pole. Background Technology

[0002] my country is a country with a large distribution of permafrost, with seasonally frozen soil areas accounting for approximately 53% of its land area. Due to the presence of ice, the physical and mechanical properties of permafrost undergo complex changes during freeze-thaw cycles. During the freezing process, the free water in seasonally frozen soil expands in volume upon freezing, causing frost heave deformation. For example, Chinese patent ZL 202210032696.0 describes a scale-type anti-frost heave pile foundation, which mainly achieves its anti-frost effect through a "scale" structure set on the outside of the pole. However, such a structure is not only complex but also extremely difficult to construct. Furthermore, in freezing environments, the springs are easily frozen first, causing the design to fail, making it unsuitable for implementation. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, the technical solution adopted by this utility model to solve the technical problem is: to provide a frost-resistant and crack-resistant concrete pole, including a pole body, which includes an embedded part, an expansion part and a straight part from bottom to top. The embedded part, expansion part and straight part are all hollow. The embedded part is in the shape of an inverted cone, the expansion part is in the shape of an inverted frustum, and the straight part is in the shape of an elongated cylinder. The expansion part is formed with multiple grooves, and fastening devices are fitted inside the grooves.

[0005] Preferably, the height of the embedded part is 1m to 1.8m, and the top diameter of the embedded part is 320mm.

[0006] Preferably, the bottom diameter of the expansion part is 320mm, the top diameter is 340mm, and the height of the expansion part is 1m to 1.2m.

[0007] Preferably, there are 6 grooves, which are evenly spaced and obliquely distributed around the outer wall of the expansion part. The depth of the grooves is 10mm to 20mm and the inclination angle is 60° to 80°.

[0008] Preferably, the fastening device includes a reinforcing bar and a steel sleeve, with the reinforcing bar embedded in the groove and the steel sleeve fixed to the outside of the reinforcing bar by bolts.

[0009] Preferably, the bottom of the embedded part is solid, the portion of the embedded part 0.8m and above is hollow, the hollow cavity of the embedded part is also inverted conical, and the top diameter of the hollow cavity of the embedded part is 160mm.

[0010] Preferably, the hollow cavity of the expansion section is in the shape of an inverted frustum, with the bottom diameter of the hollow cavity being 160mm and the top diameter being 200mm.

[0011] Preferably, the height of the straight rod is 8m to 10m, the bottom diameter of the straight rod is 340mm, the top diameter is 100mm, and the bottom diameter of the hollow cavity of the straight rod is 200mm and the top diameter is 40mm.

[0012] The beneficial effects of this utility model are as follows: By dividing the pole body into an embedded part, an expansion part, and a straight part, and making the embedded part an inverted cone shape and the expansion part an inverted frustum shape, this utility model converts the vertical frost heave force into circumferential compressive stress when water or surrounding soil expands and is pulled upwards due to freezing, thus preventing the bottom of the pole body from cracking. Furthermore, due to the obliquely arranged steel bars and steel sleeves, the expansion part is doubly constrained by the sleeves, which can convert the 30kN frost pull force into 1.8MPa circumferential compressive stress, which is less than 5% of the axial compressive strength of C50 concrete. Moreover, this structure forms an ice-breaking body, so that when the soil expands, it will crack preferentially at the location of the steel bars and steel sleeves, further dispersing the stress on the pole body. Furthermore, since the pole body is formed with hollow cavities of different shapes from bottom to top, the degree of thermal expansion and contraction of the pole body is better controlled. Moreover, the above-mentioned configuration does not require external reinforcement mechanisms on the pole, nor does it require digging deeper and larger foundation pits for assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] In the diagram: Embedded part 1; Expansion part 2; Straight rod part 3; Fastening device 4. Detailed Implementation

[0016] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0017] Example 1: As Figure 1 As shown, the present invention aims to at least solve one of the technical problems existing in the prior art.

[0018] Therefore, the technical solution adopted by this utility model to solve the technical problem is: to provide a frost-resistant and crack-resistant concrete pole, including a pole body, which includes an embedded part 1, an expansion part 2 and a straight part 3 from bottom to top. The embedded part 1, the expansion part 2 and the straight part 3 are all hollow. The embedded part 1 is in the shape of an inverted cone, the expansion part 2 is in the shape of an inverted frustum, and the straight part 3 is in the shape of an elongated cylinder. The expansion part 2 is formed with multiple grooves, and a fastening device 4 is fitted inside the grooves.

[0019] The height of the embedded part 1 is 1m to 1.8m, and the top diameter of the embedded part 1 is 320mm.

[0020] The bottom diameter of the expansion part 2 is 320mm, the top diameter is 340mm, and the height of the expansion part 2 is 1m to 1.2m.

[0021] There are a total of 6 grooves, which are evenly spaced and obliquely distributed around the outer wall of the expansion part 2. The depth of the grooves is 10mm to 20mm and the inclination angle is 60° to 80°.

[0022] The fastening device 4 includes a reinforcing bar and a steel sleeve. The reinforcing bar is embedded in the groove, and the steel sleeve is fixed to the outside of the reinforcing bar by bolts.

[0023] The bottom of the embedded part 1 is solid, while the portion of the embedded part 1 from 0.8m upwards is hollow. The hollow cavity of the embedded part 1 is also in the shape of an inverted cone, and the top diameter of the hollow cavity of the embedded part 1 is 160mm.

[0024] The hollow cavity of the expansion section 2 is in the shape of an inverted frustum. The bottom diameter of the hollow cavity of the expansion section 2 is 160mm and the top diameter is 200mm.

[0025] The height of the straight rod part 3 is 8m to 10m. The bottom diameter of the straight rod part 3 is 340mm and the top diameter is 100mm. The bottom diameter of the hollow cavity of the straight rod part 3 is 200mm and the top diameter is 40mm.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the embodiments of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A frost-resistant and crack-resistant concrete utility pole, comprising a pole body, characterized in that: The pole body comprises, from bottom to top, an embedded part, an expansion part, and a straight part. The embedded part, expansion part, and straight part are all hollow. The embedded part is in the shape of an inverted cone, the expansion part is in the shape of an inverted frustum, and the straight part is in the shape of an elongated cylinder. The expansion part is formed with multiple grooves, and fastening devices are fitted inside the grooves.

2. The frost-resistant and crack-resistant concrete pole according to claim 1, characterized in that: The height of the embedded part is 1m to 1.8m, and the top diameter of the embedded part is 320mm.

3. The frost-resistant and crack-resistant concrete pole according to claim 2, characterized in that: The bottom diameter of the expansion part is 320mm, the top diameter is 340mm, and the height of the expansion part is 1m to 1.2m.

4. The frost-resistant and crack-resistant concrete pole according to claim 3, characterized in that: There are a total of 6 grooves, which are evenly spaced and obliquely distributed around the outer wall of the expansion part. The depth of the grooves is 10mm to 20mm and the inclination angle is 60° to 80°.

5. The frost-resistant and crack-resistant concrete pole according to claim 1, characterized in that: The fastening device includes a reinforcing bar and a steel sleeve. The reinforcing bar is embedded in a groove, and the steel sleeve is fixed to the outside of the reinforcing bar by bolts.

6. The frost-resistant and crack-resistant concrete pole according to claim 3, characterized in that: The bottom of the embedded part is solid, the portion of the embedded part 0.8m and above is hollow, the hollow cavity of the embedded part is also inverted conical, and the top diameter of the hollow cavity of the embedded part is 160mm.

7. A frost-resistant and crack-resistant concrete pole according to claim 3, characterized in that: The hollow cavity of the expansion section is in the shape of an inverted frustum, with a bottom diameter of 160 mm and a top diameter of 200 mm.

8. A frost-resistant and crack-resistant concrete pole according to claim 3, characterized in that: The height of the straight rod section is 8m to 10m, the bottom diameter of the straight rod section is 340mm, the top diameter is 100mm, the bottom diameter of the hollow cavity of the straight rod section is 200mm, and the top diameter is 40mm.

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