Mixed reinforced concrete pole

Abstract

The utility model relates to the related technical field of power transmission and distribution, in particular to a mixed reinforced concrete pole which comprises prestressed steel bars, common steel bars are arranged on one sides of the prestressed steel bars, and concrete pole bodies are arranged on the surfaces of the common steel bars. The pre-stressed steel bars arranged in the spiral line shape can enable stress distribution to be more uniform when the concrete pole bears bending moment and axial force, compared with linear arrangement, the pre-stressed steel bars arranged in the spiral line shape can provide extra torsion resistance when the concrete pole bears torque, and therefore the concrete pole can be prevented from being damaged. The spiral-line-shaped prestressed steel bars can provide a continuous shear-resistant effect at all height positions of the concrete electric pole and are high in bonding performance with concrete, the common steel bars are matched with the external spiral-line-shaped prestressed steel bars, the device can have better strength, and the use efficiency of the electric pole is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of power transmission and distribution, and in particular to reinforced concrete poles. Background Technology

[0002] Early concrete poles mainly used ordinary reinforced concrete structures. However, with the continuous increase in the demand for power transmission, higher requirements have been placed on the strength, durability and other properties of the poles. Hybrid reinforced concrete poles are a widely used support structure in overhead power and communication lines. Hybrid reinforced concrete poles usually use both prestressed steel bars and ordinary steel bars. Their cross-sectional shape is generally circular or annular. This shape has good mechanical properties and stability and can evenly bear various loads from overhead lines. Therefore, hybrid reinforced concrete poles are particularly needed.

[0003] However, existing concrete poles, due to the low tensile strength of concrete, are prone to cracking in bending and tension areas during use. These cracks not only reduce the aesthetics of the pole but also accelerate the corrosion of the reinforcing steel, thereby affecting the service life and structural safety of the pole and impacting its efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a hybrid reinforced concrete pole to solve the problem mentioned in the background art. In the process of use, ordinary reinforced concrete poles are prone to cracks in bending and tension parts due to the low tensile strength of concrete. These cracks not only reduce the aesthetics of the pole, but also accelerate the corrosion of the reinforcing steel, thereby affecting the service life and structural safety of the pole and the efficiency of its use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mixed-reinforced concrete pole, comprising prestressed steel bars, with ordinary steel bars provided on one side of the prestressed steel bars, and a concrete pole provided on the surface of the ordinary steel bars, a first reinforcing stirrup fixedly connected to the other side of the prestressed steel bars, a spiral stirrup provided on one side of the ordinary steel bars, and a second reinforcing stirrup fixedly connected to the other side of the ordinary steel bars.

[0006] Preferably, the first reinforcing stirrup is in the shape of a ring, and the prestressed steel bars are provided in five sets.

[0007] Preferably, the prestressed steel bars are spirally distributed, and the ordinary steel bars are HRB400 grade hot-rolled ribbed steel bars with a diameter of 8mm.

[0008] Preferably, the first reinforcing stirrups are provided in ten sets, and the second reinforcing stirrups are provided in eight sets.

[0009] Preferably, the ordinary reinforcing bars are provided in seven groups with a spacing of 150mm, and the spiral stirrups are fixedly connected to the prestressed reinforcing bars.

[0010] Preferably, the concrete strength grade of the concrete pole body is C50.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the hybrid reinforced concrete pole, through the spiral arrangement of the prestressed steel bars and the reasonable arrangement of ordinary steel bars, as well as the corresponding structural measures, can effectively resist the action of various forces under the design load. This steel bar arrangement scheme not only meets the requirements of strength, stiffness and crack resistance, but also takes into account the operability and economy of the actual project, providing a reliable structural guarantee for the safe and stable operation of the pole and greatly improving the efficiency of the pole's use. Attached Figure Description

[0012] Figure 1 This is a side view of the appearance structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure in which some of the prestressed steel bars and the first reinforcing stirrups cooperate with each other in this utility model;

[0014] Figure 3 This is a schematic diagram of the structure in which ordinary steel bars and second reinforcing stirrups cooperate with each other in this utility model.

[0015] In the diagram: 1. Prestressed steel bars; 2. Ordinary steel bars; 3. Concrete pole; 4. First reinforcing stirrup; 5. Spiral stirrup; 6. Second reinforcing stirrup. Detailed Implementation

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a mixed reinforced concrete pole, including a prestressed steel bar 1, an ordinary steel bar 2 is provided on one side of the prestressed steel bar 1, a concrete pole 3 is provided on the surface of the ordinary steel bar 2, a first reinforcing stirrup 4 is fixedly connected to the other side of the prestressed steel bar 1, a spiral stirrup 5 is provided on one side of the ordinary steel bar 2, and a second reinforcing stirrup 6 is fixedly connected to the other side of the ordinary steel bar 2.

[0018] Furthermore, the first reinforcing stirrup 4 is in the shape of a ring, and five sets of prestressed steel bars 1 are provided. By setting the first reinforcing stirrup 4, the prestressed steel bars 1 can be fully fixed, thereby increasing the stability of the device itself. By setting the five sets of prestressed steel bars 1, the mutual cooperation of the five sets of prestressed steel bars 1 can enable the device to better bear the load and improve its stability.

[0019] Furthermore, the prestressed steel bars 1 are spirally distributed, and the ordinary steel bars 2 are HRB400 grade hot-rolled ribbed steel bars with a diameter of 8mm. Through the spiral distribution of the prestressed steel bars 1, the spiral arrangement of the prestressed steel bars 1 enables the concrete pole 3 to have a more uniform stress distribution when subjected to bending moment and axial force. Compared to a straight arrangement, the spiral shape can better adapt to the stress changes of the concrete pole 3 at different heights and cross-sectional positions, effectively reducing stress concentration and improving the overall load-bearing capacity of the concrete pole 3. The spiral prestressed steel bars 1 can provide additional torsional resistance when the concrete pole 3 is subjected to torque. Due to the spiral direction of the prestressed steel bars 1, they can generate a similar effect to a helical spring when resisting torque, enhancing the torsional stiffness of the concrete pole 3, enabling the concrete pole 3 to withstand complex stress environments, such as lateral wind loads. When subjected to loads or unbalanced conductor tension, the prestressed steel bars 1 are more stable and reliable. The helical arrangement of the prestressed steel bars 1 forms a more effective circumferential constraint on the concrete. When the concrete pole 3 is under load, this constraint can limit the lateral deformation of the concrete, improve the compressive strength and ductility of the concrete, thereby enhancing the overall structural stability of the concrete pole 3 and reducing the generation and development of cracks. The helical prestressed steel bars 1 can provide continuous shear resistance at various height positions of the concrete pole 3. The helical arrangement of the prestressed steel bars 1 will not cause significant obstacles to the pouring of concrete. With the setting of ordinary steel bars 2 made of HRB400 grade hot-rolled ribbed steel bars, the HRB400 grade hot-rolled ribbed steel bars have good mechanical properties and strong bonding performance with concrete. Furthermore, the cooperation between the ordinary steel bars 2 and the externally helical arrangement of the prestressed steel bars 1 can give the device better strength.

[0020] Furthermore, ten sets of first reinforcing stirrups 4 and eight sets of second reinforcing stirrups 6 are provided. The ten sets of first reinforcing stirrups 4 can fully fix the prestressed steel bars 1, thereby improving the tensile and shear resistance of the device. The eight sets of second reinforcing stirrups 6 can fully fix the ordinary steel bars 2, which can provide strong internal support for the concrete pole 3, thereby improving the overall rigidity of the device.

[0021] Furthermore, seven sets of ordinary steel bars 2 are provided, with a spacing of 150mm. The spiral stirrups 5 are fixedly connected to the prestressed steel bars 1. By setting seven sets of ordinary steel bars 2, this arrangement can significantly improve the bending and shear strength of the concrete pole 3 and effectively resist the large load borne by the concrete pole 3. The spiral stirrups 5 and the prestressed steel bars 1 are used to enhance the local strength of the concrete pole 3 and prevent damage.

[0022] Furthermore, the concrete strength grade of the concrete pole 3 body is C50. By setting the C50 concrete pole 3, the C50 concrete can ensure that the concrete pole 3 has sufficient compressive strength and durability, thus extending the service life of the concrete pole 3.

[0023] Working Principle: During use, the spiral-shaped distribution of prestressed steel bars 1 ensures a more uniform stress distribution on the concrete pole 3 when subjected to bending moment and axial force. Compared to a straight arrangement, the spiral shape better adapts to the stress changes at different heights and cross-sectional positions of the concrete pole 3, effectively reducing stress concentration and improving the overall load-bearing capacity of the concrete pole 3. The spiral-shaped prestressed steel bars 1 provide additional torsional resistance when the concrete pole 3 is subjected to torque. Due to the spiral direction of the prestressed steel bars 1, they can act like a helical spring when resisting torque, enhancing the torsional stiffness of the concrete pole 3. This makes the concrete pole 3 more stable and reliable under complex stress environments, such as when subjected to lateral wind loads or unbalanced conductor tension. The spiral arrangement of the prestressed steel bars 1 provides a more effective circumferential constraint on the concrete. When the concrete pole 3 is under load, this constraint can limit the lateral deformation of the concrete, improve the compressive strength and ductility of the concrete, thereby enhancing the overall structural stability of the concrete pole 3 and reducing the generation and development of cracks. The spiral prestressed steel bars 1 can provide continuous shear resistance at various height positions of the concrete pole 3. The spiral arrangement of the prestressed steel bars 1 will not cause significant obstacles to the pouring of concrete. With the setting of ordinary steel bars 2 made of HRB400 grade hot-rolled ribbed steel bars, which have good mechanical properties and strong bonding performance with concrete, and through the interaction between the ordinary steel bars 2 and the externally spirally arranged prestressed steel bars 1, the device can have better strength and greatly improve the utilization efficiency of the pole.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixed-reinforced concrete pole, comprising prestressed steel bars (1), characterized in that: One side of the prestressed steel bar (1) is provided with an ordinary steel bar (2), and a concrete pole (3) is provided on the surface of the ordinary steel bar (2). The other side of the prestressed steel bar (1) is fixedly connected with a first reinforcing stirrup (4). One side of the ordinary steel bar (2) is provided with a spiral stirrup (5), and the other side of the ordinary steel bar (2) is fixedly connected with a second reinforcing stirrup (6).

2. The reinforced concrete pole according to claim 1, characterized in that: The first reinforcing stirrup (4) is in the shape of a ring, and the prestressed steel bar (1) is provided in five sets.

3. The hybrid reinforced concrete pole according to claim 1, characterized in that: The prestressed steel bars (1) are spirally distributed, and the ordinary steel bars (2) are HRB400 grade hot-rolled ribbed steel bars with a diameter of 8mm.

4. The hybrid reinforced concrete pole according to claim 1, characterized in that: The first reinforcing stirrup (4) has ten sets, and the second reinforcing stirrup (6) has eight sets.

5. The mixed-reinforced concrete pole according to claim 1, characterized in that: The ordinary steel bars (2) are provided in seven groups with a spacing of 150mm, and the spiral stirrups (5) are fixedly connected to the prestressed steel bars (1).

6. The hybrid reinforced concrete pole according to claim 1, characterized in that: The concrete strength grade of the concrete pole (3) is C50.

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