Corrosion-resistant concrete pole with high crack resistance

Abstract

The utility model discloses a corrosion-resistant concrete pole with high crack resistance, which is formed by pouring corrosion-resistant concrete on a framework, a plurality of GFRP (glass fiber reinforced plastic) rib rings are arranged on the framework, a plurality of GFRP ribs are distributed at intervals along the length direction of the framework, and each GFRP rib ring is respectively bound on the framework through stirrups. The GFRP rib ring forms active constraint on concrete in the framework, and when the electric pole is subjected to external force, the GFRP rib ring bears circumferential tensile stress through a shear stress transfer mechanism, so that the compressive strength and the crack resistance of the electric pole are remarkably improved; and the GFRP bars have high elasticity modulus, crack width development of the concrete pole can be displayed in a limited mode, corrosion can be reduced, and the service life can be prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of column structures with internal reinforcement made of concrete, and in particular to a high-anti-cracking corrosion-resistant concrete pole. BACKGROUND

[0002] The mechanism of cracks caused by temperature deformation differences in a reinforced concrete pole can be analyzed as follows: the structure is formed by pouring the internal steel framework and the external concrete. Due to the difference in linear expansion coefficients between steel and concrete, temperature deformation constraint stress is generated at the interface when the ambient temperature changes. When the cumulative stress exceeds the tensile strength limit of the concrete, micro-cracks in the matrix material will expand, and eventually form through cracks. The extension and development of such cracks will directly affect the structural integrity and durability of the pole. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a corrosion-resistant concrete pole with improved anti-cracking performance, which adopts the technical solution of:

[0004] A high-anti-cracking corrosion-resistant concrete pole is made of a framework poured with corrosion-resistant concrete, wherein a plurality of GFRP tendon rings are provided on the framework, and a plurality of GFRP tendons are distributed along the length direction of the framework at intervals, and each GFRP tendon ring is bound to the framework by a stirrup.

[0005] In one embodiment of the present application, the technical solution adopted to solve the technical problem is that the framework includes a plurality of main steel bars and a plurality of reinforcing steel bars, the plurality of main steel bars are distributed at intervals in a circle, the plurality of reinforcing steel bars are arranged outside the circle formed by the plurality of reinforcing steel bars, and the plurality of reinforcing steel bars are distributed at intervals along the axial direction of the main steel bars and are welded to the main steel bars.

[0006] In one embodiment of the present application, the technical solution adopted to solve the technical problem is that each GFRP tendon ring is arranged between two adjacent reinforcing steel bars.

[0007] In one embodiment of the present application, the technical solution adopted to solve the technical problem is that the GFRP tendon ring is formed by hot melting the ends of the GFRP tendons.

[0008] In one embodiment of the present application, the technical solution adopted to solve the technical problem is that the GFRP tendon ring is formed by hot melting the ends of the GFRP tendons.

[0009] The present application has the following beneficial effects:

[0010] In the application, the GFRP ring is bound on the framework, the GFRP ring forms active constraint to the concrete in the framework, when the pole is subjected to external force, the GFRP ring bears the hoop tensile stress through the shear stress transmission mechanism, so that the compressive strength and crack resistance of the pole are improved significantly; and the GFRP rod has high elastic modulus, can limit the development of crack width of the concrete pole, is beneficial to reducing corrosion and prolonging service life. BRIEF DESCRIPTION OF DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0012] Figure 1 It is a structural schematic view of the framework in the embodiments of the application. DETAILED DESCRIPTION

[0013] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the drawings are used to supplement the description of the text part, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as the limitation of the protection scope of the present application.

[0014] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. are not included in the number, above, below, etc. are included in the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0015] In the description of the present application, it is understood that the position description is involved, for example, the position or location relationship indicated by up, down, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present application.

[0016] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0017] Refer toFigure 1 The application provides a high-anti-cracking corrosion-resistant concrete electric pole which is made of a framework 10 and corrosion-resistant concrete, wherein a plurality of GFRP ring 20 are arranged on the framework 10, and the GFRP rings are distributed along the length direction of the framework 10 and are bound on the framework 10 by the stirrups.

[0018] In the application, the GFRP rings 20 are bound on the framework 10, the GFRP rings 20 actively constrain the concrete in the framework 10, and the electric pole bears the circumferential tensile stress by the shear stress transmission mechanism when subjected to external force, so that the compressive strength and the anti-cracking performance of the electric pole are improved significantly; and the GFRP ring has a high elastic modulus, can limit the development of the crack width of the concrete electric pole, is beneficial to reducing corrosion and prolonging the service life.

[0019] The GFRP ring has a low density and cannot cause a large increase in the weight of the electric pole.

[0020] The GFRP ring is corrosion-resistant and suitable for harsh environments, and the cooperation of the GFRP ring and the corrosion-resistant concrete makes the electric pole suitable for high-corrosion scenes.

[0021] Specifically, the framework 10 comprises a plurality of main steel bars 11 and a plurality of reinforcing steel bars 12, the main steel bars 11 are distributed at intervals in a circle, the reinforcing steel bars 12 are arranged outside the circle formed by the reinforcing steel bars 12, and the reinforcing steel bars 12 are distributed at intervals along the axial direction of the main steel bars 11 and are welded to the main steel bars 11.

[0022] The main steel bars 11 are distributed at intervals in a circle, the reinforcing steel bars 12 are arranged inside the main steel bars 11 and are welded at intervals along the axial direction of the main steel bars 11, the axial and circumferential bearing capacity of the electric pole is increased, the framework 10 has high structural strength and rigidity, and the structural strength and rigidity of the electric pole are improved.

[0023] In the embodiment, each GFRP ring 20 is arranged between two adjacent reinforcing steel bars 12, so that the GFRP ring 20 can effectively constrain the concrete, and the GFRP ring 20 does not affect the molding of the concrete electric pole and does not need to modify the existing molding mold of the electric pole.

[0024] In the embodiment, the GFRP ring 20 is formed by hot melting the GFRP ring at the head and tail, so that the tensile strength of the GFRP ring 20 as a whole is ensured.

[0025] Preferably, the surface of the GFRP ring 20 is provided with scratches, so that the adhesion between the GFRP ring 20 and the concrete is increased, the slippage between the GFRP ring 20 and the concrete is reduced, and the constraint of the GFRP ring 20 on the concrete is ensured.

[0026] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent transformations or replacements without departing from the spirit of the utility model, and these equivalent transformations and replacements are all included in the range defined by the claims of the application.

Claims

1. A corrosion resistant concrete pole with high crack resistance, characterized in that, It is made of corrosion-resistant concrete casted by a skeleton (10) on which a plurality of GFRP ring (20) is arranged, a plurality of GFRP bars are distributed along the length direction of the skeleton (10), and each GFRP ring (20) is tied on the skeleton (10) by stirrups.

2. A high crack resistance corrosion resistant concrete pole according to claim 1, characterized in that, The skeleton (10) comprises a plurality of main steel bars (11) and a plurality of reinforcing steel bars (12), the plurality of main steel bars (11) are distributed in a circle, the plurality of reinforcing steel bars (12) are arranged outside the circle enclosed by the plurality of reinforcing steel bars (12), and the plurality of reinforcing steel bars (12) are distributed along the axial direction of the main steel bars (11) and welded with the main steel bars (11).

3. The high crack-resistant performance corrosion resistant concrete pole according to claim 2, characterized in that, Each GFRP ring (20) is arranged between two adjacent reinforcing steel bars (12).

4. The high crack resistance corrosion resistant concrete pole according to claim 1, characterized in that, The GFRP ring (20) is formed by hot melting connection of GFRP bars.

5. The high crack resistance and corrosion-resistant concrete pole according to claim 4, characterized in that, The GFRP bars are provided with scratches on the surface.

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