CN110744698A - Manufacturing method of CFRP (carbon fiber reinforced plastics) concrete electric pole - Google Patents
Manufacturing method of CFRP (carbon fiber reinforced plastics) concrete electric pole Download PDFInfo
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- CN110744698A CN110744698A CN201911051426.9A CN201911051426A CN110744698A CN 110744698 A CN110744698 A CN 110744698A CN 201911051426 A CN201911051426 A CN 201911051426A CN 110744698 A CN110744698 A CN 110744698A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/04—Methods or machines specially adapted for the production of tubular articles by casting into moulds by simple casting, the material being neither positively compacted nor forcibly fed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention belongs to the technical field of power transmission equipment, and discloses a manufacturing method of a CFRP (carbon fiber reinforced plastics) reinforced concrete pole, which comprises the following steps: (1) manufacturing an outer pipe template and an inner pipe template of the electric pole, wherein the diameter of the inner pipe template is smaller than that of the outer pipe template; (2) an inner frame body of the electric pole is manufactured by CFRP ribs, and the inner frame body comprises vertical main ribs, an inner steel hoop, spiral ribs and a limiting clamping ring; (3) the combined inner frame body is placed between the outer pipe template and the inner pipe template, the inner frame body and the outer pipe template are sequentially coaxially arranged, concrete is poured between the outer pipe template and the inner pipe template, the top of the electric pole is capped by the concrete, and the concrete strength is required to be up to 80% of the design strength after the form is removed. The electric pole manufactured by the method has high structural strength and lighter weight, can effectively reduce or eliminate longitudinal cracks of the concrete electric pole, improves the yield, can effectively improve the relevant bearing index and durability of the electric pole, and prolongs the service life of the electric pole.
Description
Technical Field
The invention belongs to the technical field of power transmission equipment, and particularly relates to a manufacturing method of a CFRP (carbon fiber reinforced plastics) concrete pole.
Background
With the gradual and compact construction of power grids, the working performance of various on-service power transmission lines is directly related to the development of national economy, most of the existing various transmission and distribution power supply lines are erected by concrete poles (cement poles), and the safety of the existing various transmission and distribution power supply lines is the key for ensuring the normal operation of the power transmission lines. The durability of traditional concrete pole under outdoor environment erosion can not be guaranteed, the main reason derives from the reinforcing bar corrosion, greatly reduced the service life of pole, serious easy emergence destroys the condition that causes the outage suddenly, brings great inconvenience for people's production life, causes huge loss of property and casualties accident. Therefore, the CFRP bar is used for replacing the traditional reinforcing bar, the problem of reinforcing bar corrosion can be better solved, the durability of the electric pole is improved, and the service life of the electric pole is prolonged.
The CFRP is a carbon fiber reinforced composite material, has the characteristics of high strength, low density, difficult corrosion, good durability and the like, and has the following advantages: (1) the corrosion resistance of the structure is improved; (2) the bearing capacity of the structure is improved; (3) the ductility and other shock resistance of the structure are enhanced; (4) this kind of arrangement of reinforcement mode has combined the advantage of CFRP muscle and traditional reinforcing bar, the effectual reinforcing bar corrosion scheduling problem that has prevented.
Chinese patent CN201420387581.4 discloses an annular FRP reinforced concrete pole, which adopts annular FRP ribs and cross ribs. The FRP reinforced concrete pole improves the durability of the pole to a certain extent, but the reinforcement is complex in form and difficult to construct. In addition, chinese patent CN201810451197.9 discloses an FRP thin-walled pole and a method for manufacturing the same, which is an integrated hollow structure made of FRP material by winding process. The FRP thin-wall electric pole improves the durability and the wind resistance of the electric pole to a certain extent, but the electric pole is easy to generate longitudinal cracks when concrete shrinks, so that waste products are generated, and potential safety hazards are brought.
Disclosure of Invention
The invention aims to provide a manufacturing method of a CFRP (carbon fiber reinforced plastics) concrete pole, which has the advantages of high structural strength, light weight, capability of effectively reducing or eliminating longitudinal cracks of the concrete pole, improvement of the yield, capability of effectively improving the relevant bearing index and durability of the pole and prolonging the service life of the pole.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a manufacturing method of a CFRP reinforced concrete pole comprises the following steps:
(1) manufacturing an outer pipe template and an inner pipe template of the electric pole according to a construction drawing, wherein the diameter of the inner pipe template is smaller than that of the outer pipe template;
(2) the inner frame body of the electric pole is made of CFRP (carbon fiber reinforced plastics) ribs and comprises vertical main ribs, inner steel hoops, spiral ribs and a limiting clamping ring; the inner steel hoop is of an annular structure, a plurality of limiting clamping rings are uniformly distributed outside the outer ring of the inner steel hoop, the vertical main rib is inserted into the limiting clamping rings and welded with the limiting clamping rings, the spiral rib extends spirally along the length direction of the vertical main rib, and the inner steel hoop is arranged in the inner ring of the spiral rib along the length direction of the vertical main rib; uniformly binding limiting clamping rings on the outer wall of the inner steel hoop in the circumferential direction, inserting the vertical main ribs into the corresponding limiting clamping rings, and finally spirally winding the spiral ribs on the periphery of the vertical main ribs;
(3) the combined inner frame body is placed between the outer pipe template and the inner pipe template, the inner frame body and the outer pipe template are sequentially coaxially arranged, concrete is poured between the outer pipe template and the inner pipe template, the top of the electric pole is capped by the concrete, and the concrete strength is required to be up to 80% of the design strength after the form is removed.
Further, the concrete comprises, by weight, 450 parts of Portland cement 350-.
Further, the pole is conical columnar structure, the radius of interior steel hoop by the pole top extremely the pole bottom grow gradually.
Furthermore, the vertical main ribs are 10-14 and are uniformly distributed around the central shaft of the electric pole.
Furthermore, the distance between the spiral ribs is 50-110 mm.
Further, the distance between the inner steel hoops is 500-600 mm.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the manufacturing method of the CFRP reinforced concrete pole can effectively overcome the defect that the traditional concrete pole is easy to generate longitudinal cracks to cause waste products when the concrete is solidified and shrunk, can effectively improve the relevant bearing index and durability of the pole, and prolongs the service life of the pole. The inner frame body formed by CFRP ribs can better solve the problem of corrosion of the steel bars, improve the durability of the electric pole and prolong the service life of the electric pole; by arranging the vertical main ribs, the structural strength of each position of the electric pole can be reasonably controlled so as to adapt to the structural requirements of transportation and installation; by arranging the spiral ribs, the strength of the side wall of the electric pole is effectively enhanced, the electric pole is not easy to damage even if being impacted, and the product quality is improved; the limiting clamping ring is arranged on the inner steel hoop to play a role in positioning, so that the vertical main reinforcement and the inner steel hoop are conveniently connected and fixed.
The concrete provided by the invention takes portland cement, stones, mineral powder, silica sand, water and a water reducing agent as raw materials, is reasonable in formula, ensures that each component achieves a better synergistic effect through determination of the content range of each component, and enables the concrete to have the effects of impact resistance, wear resistance, water reduction and crack resistance.
Drawings
FIG. 1 is a schematic structural view of a CFRP reinforced concrete pole of the present invention;
fig. 2 is a sectional view taken along line a-a of fig. 1.
Wherein, labeled in the figures: 1-vertical main reinforcement; 2-inner steel hoop; 3-spiral ribs; 4-a limit retainer ring; 5-concrete.
Detailed Description
The invention is further described with reference to the following figures and examples. It should be noted that the specific embodiments of the present invention are only for clearly describing the technical solutions, and should not be taken as a limitation to the scope of the present invention.
A manufacturing method of a CFRP reinforced concrete pole comprises the following steps:
(1) manufacturing an outer pipe template and an inner pipe template of the electric pole according to a construction drawing, wherein the diameter of the inner pipe template is smaller than that of the outer pipe template;
(2) an inner frame body of the electric pole is made of CFRP (carbon fiber reinforced plastics) ribs, and the inner frame body comprises vertical main ribs 1, inner steel hoops 2, spiral ribs 3 and a limiting retainer ring 4; the inner steel hoops 2 are provided with a plurality of inner steel hoops, the distance between the inner steel hoops 2 is 500-600mm, any one of the inner steel hoops 2 is of an annular structure, 10-14 limiting clamping rings 4 are uniformly distributed outside the outer ring of the inner steel hoop 2, the vertical main rib 1 is inserted into the limiting clamping rings 4 and welded with the limiting clamping rings 4, the spiral rib 3 extends spirally along the length direction of the vertical main rib 1, and the inner steel hoop 2 is arranged in the inner ring of the spiral rib 3 along the length direction of the vertical main rib 1; the limiting clamping rings 4 are uniformly bound on the outer wall of the inner steel hoop 2 in the circumferential direction, the vertical main ribs 1 are inserted into the corresponding limiting clamping rings 4, and finally the spiral ribs 3 are spirally wound on the periphery of the vertical main ribs 1, wherein the distance between the spiral ribs 3 is 50-110 mm; the pole is conical columnar structure, the radius of interior steel hoop 2 by the pole top extremely the pole bottom grow gradually. In this embodiment, the interval between the inner steel hoop 2 is 500mm, the vertical main reinforcement 1 is provided with 12, and the interval of the spiral reinforcement 3 is 50 mm.
(3) Place the inner frame body that will make up between outer tube template and inner tube template, inner frame body and outer tube template are coaxial setting in proper order to pour concrete 5 between outer tube template and inner tube template, simultaneously with concrete 5 with the pole top capping, treat that concrete 5 intensity reaches design intensity more than 80% form removal can.
The manufacturing method of the CFRP reinforced concrete pole can effectively overcome the defect that the traditional concrete 5 pole is easy to generate longitudinal cracks when the concrete 5 is solidified and shrunk to cause waste products, can effectively improve the relevant bearing index and durability of the pole, and prolongs the service life of the pole. The inner frame body formed by CFRP ribs can better solve the problem of corrosion of the steel bars, improve the durability of the electric pole and prolong the service life of the electric pole; by arranging the vertical main ribs 1, the structural strength of each position of the electric pole can be reasonably controlled so as to adapt to the structural requirements of transportation and installation; by arranging the spiral ribs 3, the strength of the side wall of the electric pole is effectively enhanced, the electric pole is not easy to damage even if being impacted, and the product quality is improved; through set up spacing rand 4 and play the effect of location on interior ferrule 2, be convenient for be connected fixedly with vertical main muscle 1 and interior ferrule 2.
According to the invention, by adjusting the proportion of the concrete 5 used by the electric pole and the selection of the raw materials, the production link can be simplified, the cost is saved, and the durability of the concrete 5 electric pole product is improved, wherein the concrete 5 comprises, by weight, 450 parts of Portland cement 350-. By determining the content range of each component, each component is ensured to achieve a better synergistic effect, so that the concrete 5 has the effects of impact resistance, wear resistance, water reduction and crack resistance.
The concrete pole greatly improves the structural stability by combining the inner frame body formed by CFRP ribs with concrete, and further strengthens the stability of the concrete pole, so that the concrete pole has good strength and bending moment resistance, and good toughness and crack resistance. The CFRP rib is a novel concrete structure reinforcing bar material, and has the advantages of high tensile strength, linear elasticity, light weight, strong corrosion resistance, economy and environmental protection. The reinforced concrete structure is arranged in the reinforced concrete structure, so that the bearing capacity of the structure can be improved. Compared with the traditional method for manufacturing the electric pole by using the steel bars, the CFRP steel bars are adopted to completely replace the steel bars to manufacture the electric pole, so that the problems of corrosion of the steel bars and the like are effectively solved.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (6)
1. A manufacturing method of a CFRP reinforced concrete pole is characterized by comprising the following steps:
(1) manufacturing an outer pipe template and an inner pipe template of the electric pole according to a construction drawing, wherein the diameter of the inner pipe template is smaller than that of the outer pipe template;
(2) the inner frame body of the electric pole is made of CFRP (carbon fiber reinforced plastics) ribs and comprises vertical main ribs, inner steel hoops, spiral ribs and a limiting clamping ring; the inner steel hoop is of an annular structure, a plurality of limiting clamping rings are uniformly distributed outside the outer ring of the inner steel hoop, the vertical main rib is inserted into the limiting clamping rings and welded with the limiting clamping rings, the spiral rib extends spirally along the length direction of the vertical main rib, and the inner steel hoop is arranged in the inner ring of the spiral rib along the length direction of the vertical main rib; uniformly binding limiting clamping rings on the outer wall of the inner steel hoop in the circumferential direction, inserting the vertical main ribs into the corresponding limiting clamping rings, and finally spirally winding the spiral ribs on the periphery of the vertical main ribs;
(3) the combined inner frame body is placed between the outer pipe template and the inner pipe template, the inner frame body and the outer pipe template are sequentially coaxially arranged, concrete is poured between the outer pipe template and the inner pipe template, the top of the electric pole is capped by the concrete, and the concrete strength is required to be up to 80% of the design strength after the form is removed.
2. The method as claimed in claim 1, wherein the concrete comprises, by weight, 450 parts of Portland cement 350-.
3. The method as claimed in claim 1, wherein the pole is a tapered cylindrical structure, and the radius of the inner steel hoop is gradually increased from the top of the pole to the bottom of the pole.
4. The method for manufacturing the CFRP reinforced concrete pole as recited in claim 1, wherein said vertical main reinforcement is 10-14 and is uniformly distributed around the central axis of the pole.
5. The manufacturing method of the CFRP reinforced concrete pole as recited in claim 1, wherein the pitch of the spiral ribs is 50-110 mm.
6. The method as claimed in claim 1, wherein the distance between the inner steel hoops is 500-600 mm.
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| CN201911051426.9A CN110744698B (en) | 2019-10-30 | 2019-10-30 | Manufacturing method of CFRP (carbon fiber reinforced plastics) concrete electric pole |
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| CN201911051426.9A CN110744698B (en) | 2019-10-30 | 2019-10-30 | Manufacturing method of CFRP (carbon fiber reinforced plastics) concrete electric pole |
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| CN110744698A true CN110744698A (en) | 2020-02-04 |
| CN110744698B CN110744698B (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113119297A (en) * | 2021-04-22 | 2021-07-16 | 哈尔滨工业大学（深圳） | Preparation mold and preparation method of fiber reinforced cement-based composite material prefabricated pipe |
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