CN101824931A - Annular partially prestressed concrete electric pole - Google Patents
Annular partially prestressed concrete electric pole Download PDFInfo
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- CN101824931A CN101824931A CN 201010119974 CN201010119974A CN101824931A CN 101824931 A CN101824931 A CN 101824931A CN 201010119974 CN201010119974 CN 201010119974 CN 201010119974 A CN201010119974 A CN 201010119974A CN 101824931 A CN101824931 A CN 101824931A
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Abstract
The invention provides an annular partially prestressed concrete electric pole, which contains lining steel hoops, reinforced steel bars and concrete, wherein the concrete is poured in the electric pole; the reinforced steel bars include longitudinally stressed straight steel bars and spiral steel bars; and the longitudinally stressed straight steel bars comprise mixed steel bars of prestressed steel bars and nonprestressed steel bars. The prestressed steel bars are arranged on the circumferential outside surfaces of the spiral steel bars; the nonprestressed steel bars are arranged on the inner walls of the peripheries of the spiral steel bars; the total cross section area of the longitudinally stressed straight steel bars is 20 to 40 percent of the total cross section area of the concrete electric pole; and the number of the nonprestressed steel bars is over 6. The annular partially prestressed concrete electric pole of the invention has high strength, bending moment resistance, toughness and crack resistance.
Description
Technical field
The present invention relates to a kind of circular pole, is a kind of annular concrete electric pole specifically, particularly a kind of annular partially prestressed concrete electric pole.
Background technology
The electric pole that is used for aerial cable line at present generally has concurrent and iron tower, and wherein concurrent generally is used for built on stilts 10kV nude cable and insulated cable, and iron tower generally is used for aerial high-voltage cable or extra-high-tension cable.Concurrent is subjected to the influence of concrete strength, generally has only tens meters long.Along with the continuous expansion of city size, some 110kV, 220kV transformer station begin to be built in the urban district, therefore the defeated modified line road of 110kV, 220kV need be transported to these transformer stations by the sky, city.Owing to be subjected to the restriction of concrete electric pole length, what be used for the built on stilts 220kV general use in defeated modified line road at present is iron tower.
Have problems and use iron tower to set up the defeated modified line road of 110kV, 220kV in the city, big as floor space, construction and installation difficulty, maintenance cost are high.Therefore, begin on some power transmission and transformation lines to consider to use concurrent to replace iron tower in order to set up the defeated modified line road of 110kV, 220kV, so the quality of concurrent is had higher requirement.
Be exactly in addition present concurrent because the performance of its intensity and bending resistance square is lower, the poor toughness of prestressed reinforced concrete electric pole, impact resistance is not strong, is prone to brittle fracture.And use the ordinary reinforced concrete electric pole, and though toughness improves, be not prone to brittle fracture,, crack resistance is poor, easily produces the hoop crack in production, use.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of annular partially prestressed concrete electric pole is provided, and this electric pole not only has good intensity and bending resistance square performance, also has good toughness and crack resistance.
In order to solve the problems of the technologies described above, the present invention is by the following technical solutions: a kind of annular partially prestressed concrete electric pole, it includes the liner stirrup, reinforcing bar and concrete, described concrete pouring is in electric pole, described reinforcing bar is divided into straight reinforcing bar of longitudinal stress and spiral reinforcement, the straight reinforcing bar of described longitudinal stress comprises spaced apart prestressed reinforcement and nonprestressed reinforcement, described prestressed reinforcement and nonprestressed reinforcement are positioned at spiral reinforcement, total cross-sectional area of the straight reinforcing bar of wherein said longitudinal stress accounts for the 20%-40% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement is more than 6.Electric pole not only has good intensity and bending resistance square performance like this, also have good toughness and crack resistance, and cost is also lower.
According to concurrent of the present invention, be preferably, total cross-sectional area of the straight reinforcing bar of described longitudinal stress accounts for the 25%-35% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement (3) is the 8-20 root.
According to concurrent of the present invention, be preferably, the clear distance of spaced apart prestressed reinforcement of described employing and nonprestressed reinforcement is not less than 30mm.
According to concurrent of the present invention, be preferably, the straight reinforcing bar of described longitudinal stress adopts the double joint spacing parallel arranging to arrange, can gain in strength like this and bending resistance square performance.
According to concurrent of the present invention, be preferably, the straight reinforcing bar of described longitudinal stress has clean topping, and this clean topping is not less than 15mm.
According to concurrent of the present invention, be preferably, the diameter of described spiral reinforcement is 4-6mm.
According to concurrent of the present invention, be preferably, described spiral reinforcement is tightr than intermediate distribution at the two ends of described concurrent.
According to concurrent of the present invention, be preferably, described concrete electric boom end has joint component, and electric pole can the segmentation manufacturing like this, connects the back and uses, and enhances productivity.
According to concurrent of the present invention, be preferably, described joint component is a steel plate ring, and this steel plate ring can be by arc welding and the welding of main muscle, and steel plate ring connects more convenient, also firm safety.
According to concurrent of the present invention, be preferably, the top of the straight reinforcing bar of longitudinal stress at described joint component place has anticorrosive coat, improves antiseptic power, can prolong the application life of electric pole.
Annular partially prestressed concrete electric pole of the present invention not only has good intensity and bending resistance square performance, also has good toughness and crack resistance.
Description of drawings
Fig. 1 is the cross section structure schematic diagram of concurrent of the present invention;
Fig. 2 is another cross section structure schematic diagram of concurrent of the present invention;
Fig. 3 is another cross section structure schematic diagram of concurrent of the present invention;
Fig. 4 is another cross section structure schematic diagram of concurrent of the present invention;
Fig. 5 is another cross section structure schematic diagram of concurrent of the present invention.
The specific embodiment
Below, for a more detailed description to the present invention in conjunction with the accompanying drawings with embodiment.These embodiment only are the descriptions to best mode for carrying out the invention, scope of the present invention are not had any restriction.
As shown in Figure 1, 2, be the structural representation of concurrent of the present invention.This electric pole contains liner stirrup 1, reinforcing bar and concrete 4, described concrete 4 is cast in the electric pole, described reinforcing bar is divided into straight reinforcing bar of longitudinal stress and spiral reinforcement 5, spiral reinforcement 5 is axially perpendicular to ground, straight reinforcing bar comprises spaced apart prestressed reinforcement 2 and nonprestressed reinforcement 3 hybrid reinforcements, and described prestressed reinforcement 2 and nonprestressed reinforcement 3 are positioned at the circumference of described spiral reinforcement 5.Be to put into earlier liner stirrup 1, spiral reinforcement 5, prestressed reinforcement 2 and nonprestressed reinforcement 3 in mould during production, with concrete 4 cast, the demoulding becomes reinforced concrete pole again after prestressed reinforcement 2 and nonprestressed reinforcement 3 hybrid reinforcements.Such reinforced concrete pole is because the hybrid reinforcement of prestressed reinforcement 2 and nonprestressed reinforcement 3 has toughness and crack resistance preferably.Total cross-sectional area of the straight reinforcing bar of the wherein said longitudinal stress of wherein said longitudinal stress accounts for 20.5% of the total cross-sectional area of described concurrent, the quantity of described nonprestressed reinforcement 3 is 18, electric pole not only has good intensity and bending resistance square performance and good toughness and crack resistance like this, and cost is also lower.
As a further improvement on the present invention, the straight bar space of described longitudinal stress is no less than 30mm, gets 32mm, 35mm, and one of 40mm is preferable.At tapered rod microcephaly place, the straight bar space of longitudinal stress is no less than 25mm.When arrangement of reinforcement was too close, the straight reinforcing bar of described longitudinal stress can adopt double joint to be arranged in juxtaposition, and can gain in strength like this and bending resistance square performance.
As a further improvement on the present invention, the straight reinforcing bar of described longitudinal stress has clean topping, and the thickness of this topping is no less than 21mm, and its thickness is got 22mm, 25mm, and one of 30mm is preferable, can not only play a very good protection like this, also may be controlled to this.
As another step improvement of the present invention, the diameter of described spiral reinforcement 5 is 4-6mm, and its two ends at described concurrent are tightr than intermediate distribution, can increase the intensity and the bending resistance square performance of electric pole like this.
Improve as a step more of the present invention, described concrete electric boom end has joint component, and described joint component is a steel plate ring, and electric pole can the segmentation manufacturing like this, connects the back use, enhances productivity.
According to concurrent of the present invention, be preferably, described joint component is a steel plate ring, and this steel plate ring can be by arc welding and the welding of main muscle, and steel plate ring connects more convenient, also firm safety.Top at the straight reinforcing bar of longitudinal stress at joint component place has anticorrosive coat, improves antiseptic power, can prolong the application life of electric pole.
Annular partially prestressed concrete electric pole of the present invention not only has good intensity and bending resistance square performance, also has good toughness and crack resistance.
Total cross-sectional area of the straight reinforcing bar of the wherein said longitudinal stress of longitudinal stress described in the present embodiment accounts for 25.5% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement 3 is 15, and other are identical with embodiment 1.
Total cross-sectional area of the straight reinforcing bar of the wherein said longitudinal stress of longitudinal stress described in the present embodiment accounts for 32.1% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement 3 is 12, as shown in Figure 3.Other are identical with embodiment 1.
Total cross-sectional area of the straight reinforcing bar of the wherein said longitudinal stress of longitudinal stress described in the present embodiment accounts for 35.5% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement 3 is 9, as shown in Figure 4.Other are identical with embodiment 1.
Total cross-sectional area of the straight reinforcing bar of the wherein said longitudinal stress of longitudinal stress described in the present embodiment accounts for 38.5% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement 3 is 7, as shown in Figure 5.Other are identical with embodiment 1.
Claims (10)
1. annular partially prestressed concrete electric pole, it includes liner stirrup (1), reinforcing bar and concrete (4), described concrete (4) is cast in the electric pole, described reinforcing bar is divided into straight reinforcing bar of longitudinal stress and spiral reinforcement (5), the straight reinforcing bar of described longitudinal stress comprises spaced apart prestressed reinforcement (2) and nonprestressed reinforcement (3), described prestressed reinforcement (2) and nonprestressed reinforcement (3) are positioned at spiral reinforcement (5), it is characterized in that:
Total cross-sectional area of the straight reinforcing bar of described longitudinal stress accounts for the 20%-40% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement (3) is more than 6.
2. concurrent according to claim 1 is characterized in that: total cross-sectional area of the straight reinforcing bar of described longitudinal stress accounts for the 25%-35% of the total cross-sectional area of described concurrent, and the quantity of described nonprestressed reinforcement (3) is the 8-20 root.
3. concurrent according to claim 1 is characterized in that: the clear distance of spaced apart prestressed reinforcement of described employing (2) and nonprestressed reinforcement (3) is not less than 30mm.
4. concurrent according to claim 3 is characterized in that: the straight reinforcing bar of described longitudinal stress adopts double joint to be arranged in juxtaposition.
5. concurrent according to claim 1 is characterized in that: the straight reinforcing bar of described longitudinal stress has clean topping, and this clean topping is not less than 15mm.
6. concurrent according to claim 1 is characterized in that: the diameter of described spiral reinforcement (5) is 4-6mm.
7. concurrent according to claim 6 is characterized in that: described spiral reinforcement (5) is tightr than intermediate distribution at the two ends of described concurrent.
8. concurrent according to claim 1 is characterized in that: described concrete electric boom end has joint component.
9. concurrent according to claim 8 is characterized in that: described joint component is a steel plate ring, and this steel plate ring can be by arc welding and the welding of main muscle.
10. according to Claim 8 or 9 described concurrents, it is characterized in that: the top of the straight reinforcing bar of longitudinal stress at described joint component place has anticorrosive coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119974 CN101824931A (en) | 2010-03-09 | 2010-03-09 | Annular partially prestressed concrete electric pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119974 CN101824931A (en) | 2010-03-09 | 2010-03-09 | Annular partially prestressed concrete electric pole |
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| CN101824931A true CN101824931A (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010119974 Pending CN101824931A (en) | 2010-03-09 | 2010-03-09 | Annular partially prestressed concrete electric pole |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877681A (en) * | 2012-09-14 | 2013-01-16 | 陆宏之 | Partially prestressed concrete electric pole |
| CN103375043A (en) * | 2013-07-17 | 2013-10-30 | 上海交通大学 | Prestressed ultra-high-performance concrete offshore wind power tower |
| CN108868287A (en) * | 2017-09-12 | 2018-11-23 | 儋州宇顺实业有限公司 | A kind of partially prestressed concrete electric pole bilayer erects circle and its application |
| CN112412148A (en) * | 2020-12-08 | 2021-02-26 | 国网福建省电力有限公司经济技术研究院 | Concrete pole with up-down segmented structure and manufacturing method thereof |
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| CN2758384Y (en) * | 2004-09-24 | 2006-02-15 | 深圳市达盈信实业有限公司 | Reinforced concrete electrical pole |
| CN1958262A (en) * | 2006-09-29 | 2007-05-09 | 上海电力线路器材有限公司 | Concrete in use for high strength reinforced concrete pole with large bending moment |
| CN200940358Y (en) * | 2006-08-30 | 2007-08-29 | 林兴 | Large bending torque part prestress concrete electric pole |
| CN101029540A (en) * | 2007-03-09 | 2007-09-05 | 罗定市水泥制品有限公司 | Prestressed concrete electrical pole and its production |
| CN200943329Y (en) * | 2006-08-30 | 2007-09-05 | 林兴 | High intensity prestressed concrete pole |
| CN200952256Y (en) * | 2006-09-29 | 2007-09-26 | 上海电力线路器材有限公司 | Large-bending moment high-strength concrete electrical pole |
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2010
- 2010-03-09 CN CN 201010119974 patent/CN101824931A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| CN2758384Y (en) * | 2004-09-24 | 2006-02-15 | 深圳市达盈信实业有限公司 | Reinforced concrete electrical pole |
| CN200940358Y (en) * | 2006-08-30 | 2007-08-29 | 林兴 | Large bending torque part prestress concrete electric pole |
| CN200943329Y (en) * | 2006-08-30 | 2007-09-05 | 林兴 | High intensity prestressed concrete pole |
| CN1958262A (en) * | 2006-09-29 | 2007-05-09 | 上海电力线路器材有限公司 | Concrete in use for high strength reinforced concrete pole with large bending moment |
| CN200952256Y (en) * | 2006-09-29 | 2007-09-26 | 上海电力线路器材有限公司 | Large-bending moment high-strength concrete electrical pole |
| CN101029540A (en) * | 2007-03-09 | 2007-09-05 | 罗定市水泥制品有限公司 | Prestressed concrete electrical pole and its production |
Non-Patent Citations (2)
| Title |
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| 《混凝土世界》 20091130 陈伟信; 陶春凤; 15m高强度环形部分预应力混凝土电杆的研制与开发 56-59 , 第05期 2 * |
| 《环形混凝土电杆国家标准》 20060718 中华人民共和国国家质量监督检验检疫总局等 环形混凝土电杆 1-14 , 1 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877681A (en) * | 2012-09-14 | 2013-01-16 | 陆宏之 | Partially prestressed concrete electric pole |
| CN103375043A (en) * | 2013-07-17 | 2013-10-30 | 上海交通大学 | Prestressed ultra-high-performance concrete offshore wind power tower |
| CN103375043B (en) * | 2013-07-17 | 2015-12-23 | 上海交通大学 | A kind of prestressing force ultra-high performance concrete offshore wind farm pylon |
| CN108868287A (en) * | 2017-09-12 | 2018-11-23 | 儋州宇顺实业有限公司 | A kind of partially prestressed concrete electric pole bilayer erects circle and its application |
| CN112412148A (en) * | 2020-12-08 | 2021-02-26 | 国网福建省电力有限公司经济技术研究院 | Concrete pole with up-down segmented structure and manufacturing method thereof |
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Open date: 20100908 |