CN1012691B - Partially prestressed electric wire pole with equal diameter - Google Patents
Partially prestressed electric wire pole with equal diameterInfo
- Publication number
- CN1012691B CN1012691B CN 89106938 CN89106938A CN1012691B CN 1012691 B CN1012691 B CN 1012691B CN 89106938 CN89106938 CN 89106938 CN 89106938 A CN89106938 A CN 89106938A CN 1012691 B CN1012691 B CN 1012691B
- Authority
- CN
- China
- Prior art keywords
- prestressed
- steel ring
- muscle
- main muscle
- prestressed main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a partially prestressed electric wire pole with an equal diameter, an upper section, a middle section and a lower section, which is composed of a whole non-prestressed main rib without breaking and overlapping, a prestressed main rib, an outer spiral rib, a rib penetrating board, a stretching steel ring, a joint steel ring, a pre-embedded steel tube, grounding nuts and concrete. The present invention is mainly used for a power transmission sequence with the high voltage of 35 to 220KV, and can be also used as a power transformation frame. The strength, the crack resistance and the rigidity of the product of the present invention all reach or beyond the requirements of national standards, longitudinal cracks can be overcome, brittle fractures are prevented, a grounding problem is effectively solved, construction and construction are convenient, and engineering quality is raised.
Description
The present invention relates to the post of prestressed structure and make tubulose or reinforcement goods with the mixture that contains cement material, relate in particular to a kind of partially prestressed electric wire pole with equal diameter, it is mainly used on the high voltage circuit of 35-220 kilovolt, also can be used as the power transformation framework.
The partly prestressed pole that grew up in recent years, have the advantage of prestressed reinforced concrete electric pole and ordinary reinforced concrete electric pole concurrently, avoided their shortcomings everywhere, particularly solved prestressed electric wire pole and the unreliable problem of longitudinal crack and ground connection in use generally occurred.1986 the 12nd phases of " power technology " monthly magazine that hydraulic and electric engineering publishing house publishes, publish " the ultra-high-tension power transmission line development of partial prestressing reinforced concrete pole (BJM60-85) " paper that the power survey and design institute beam auspicious auspicious people of grade in the Inner Mongol writes, introduced a kind of design, structure and test situation of naming to the partial prestressing reinforced concrete pole of BJM60-85.The non-prestressed main muscle in this partly prestressed pole stage casing is taked two ends and the welding of electric pole joint steel ring, and there are two subject matters significantly in the overlapping mode that staggers again after cut-offfing in the middle of electric pole.One does not structurally possess the uniformity and the integrality of whole bar section, easily produces stress at overlapping part and concentrates; Its two in electric connection overlapping part be non-continuous conductor, under non-prestressed main muscle double as down conductor situation, non-prestressed main muscle has rust can cause lap-joint's loose contact in mass-producted electric pole, and colligation is not firm or stretch-draw gets loose and will cause ground connection obstructed when centrifugal, becomes the hidden danger of line thunder protection.
Purpose of the present invention proposes a kind of improved partially prestressed electric wire pole with equal diameter at the problems referred to above just.
The present invention is the partially prestressed electric wire pole with equal diameter of prior art roughly the same, be the ring section, divide the upper, middle and lower section, be made up of non-prestressed main muscle, prestressing force master muscle, external spiral tendon, web plate, stretch-draw steel ring, joint steel ring, embedded steel tube, grounding nut, interior stirrup and concrete, whole of last hypomere employing, middle nothing are cut-off the non-prestressed main muscle and the prestressing force master muscle of overlap joint.And the invention is characterized in that the electric pole stage casing also adopts whole, middle do not have non-prestressed main muscle and a prestressing force master muscle that cut-offs overlap joint, with the uniformity that guarantees whole section electric pole structure be electrically connected reliably.With the elongated configuration of non-prestressed main muscle, make whole each section of bar section that non-prestressed main muscle all be arranged, can reduce the suffered pressure of answering in advance of concrete, prevent longitudinal crack effectively.
Non-prestressed main muscle generally adopts the A3 primes, is no less than 6 according to the non-prestressed main muscle arrangement of reinforcement number of national Specification on same section.The non-prestressed main muscle at epimere masthead and hypomere pole-footing position is freely placed on the stretch-draw steel ring of top or root after passing the macropore of web plate, and the other end welds with the joint steel ring after passing the macropore of web plate; And the non-prestressed main muscle of stage casing electric pole passes behind the macropore of two ends web plate all and every end joint steel ring welding.
Prestressing force master muscle generally adopts high strength cast iron, and its arrangement of reinforcement number is generally 2-3 times of non-prestressed main muscle, should uniformly-spaced evenly distribute by main muscle in advance with non-on annular section.Prestressing force master muscle is wanted stretching rust cleaning, accurately blanking, its error in length be no more than ten thousand of total length/, earlier rivet-like is upset in an end termination, behind the aperture that passes the two ends web plate, again rivet-like is upset in other end termination.
The joint steel ring is identical with the structure of stretch-draw steel ring, and material is identical, generally adopts the A3F steel, but their length is different, and the former is longer than the latter.The stretch-draw steel ring only plays the anchoring effect to prestressing force master muscle, and the joint steel ring is except that as also being used for the anchored end of nonprestressed reinforcement and prestressed reinforcement upper, middle and lower section electric pole being welded into designing requirement equal-diameter pole highly.The joint steel ring of the partly prestressed pole of the non-prestressed main muscle of elongated configuration will be grown than the joint steel ring of other kind, generally be advisable in 160 millimeter, because on the joint steel ring, should guarantee the weld length of non-prestressed main muscle, also to hang prestressing force master muscle, and leave the moving position of the stretch-draw dish of stretch-draw prestressing force master muscle.
External spiral tendon generally adopts the reinforcing bar of 4 millimeters of diameter phi, is coiled on non-prestressed main muscle and the prestressing force master muscle by certain spacing, no matter be upper and lower section electric pole, or the stage casing electric pole, the two ends spacing is little, and middle ware is apart from big.External spiral tendon and every non-prestressed main muscle welding with the colligation of every prestressing force master muscle, thereby make whole section cage of reinforcement have good rigidity, and the spacing of external spiral tendon is guaranteed.
For stopping the obstructed or loose contact situation of ground connection, be provided with embedded steel tube on the one hand, require to weld with non-prestressed main muscle, make it accurate location, thereby improve the electric pole quality effectively, embedded steel tube mainly connects cross-arm or ground line bracket, to hang lead or ground wire; Exceed the pre-buried grounding nut in position of buried depth on the other hand above the hypomere pole-footing, it also welds with non-prestressed main muscle, and grounding nut is used to connect ground connector.Embedded steel tube and grounding nut all require to carry out the galvanizing preservative treatment.
For supporting whole cage of reinforcement, also be provided with interior stirrup, adopt diameter phi 6-8 millimeter reinforcing bar to be provided with along bar is long by spacing 500-1000 millimeter, also respectively weld an interior stirrup in the upper and lower part of embedded steel tube and grounding nut in addition.Stirrup and every non-prestressed main muscle spot welding in these, with the colligation of every prestressing force master muscle, thereby the stiffener skeleton guarantees especially that non-prestressed main muscle double as down conductor has reliably to be electrically connected.
Concrete is an important component part of the present invention, and general requirements is
#400-
#500.
Make partially prestressed electric wire pole with equal diameter of the present invention, require outside mould, to carry out initial tensioning, the moulding outside mould of whole cage of reinforcement.The joint steel ring of a non-prestressed main muscle elder generation and an end welds, external spiral tendon spacing coiling in accordance with regulations is with every non-prestressed main muscle spot welding, with the colligation of prestressing force master muscle, interior stirrup also welds with non-prestressed main muscle respectively, with the colligation of prestressing force master muscle, fluid concrete then, punching block closes, in mould with the stretch-draw of prestressing force master muscle, in advance with fixing, the non-prestressed main muscle of the other end of burn-oning again requires to take safety measures in twice stretching process when reaching the designing requirement value.Behind the centrifugal forming, carry out steam-cured.
Product of the present invention is is all meeting or exceeding the national standard requirement aspect intensity, crack resistance, the rigidity, can overcome longitudinal crack, prevent brittle fracture, solve problem with grounding effectively, it is less on the make to control stretching force, and the stretch-draw steel ring is not fragile, and embedded steel tube can accurately be located, make things convenient for construction and installation, improved workmanship.
The present invention has the following drawings:
Fig. 1 is an epimere structural representation of the present invention;
Fig. 2 is a stage casing of the present invention structural representation;
Fig. 3 is a hypomere structural representation of the present invention;
Fig. 4 is web plate, stretch-draw steel ring and joint steel ring front view;
Fig. 5 is web plate, stretch-draw steel ring and joint steel ring sectional view;
Embodiment
400 millimeters partially prestressed electric wire pole with equal diameter of φ are referring to accompanying drawing
10 millimeters A3 primes of non-prestressed main muscle 1:7 root φ reinforcing bar;
Prestressing force master muscle 2:21 root φ
95 millimeters high strength cast irons;
Spacing is 50 millimeters in 4 millimeters reinforcing bars of external spiral tendon 3: φ, the 0.5 millimeter scope in section two ends, upper, middle and lower, and the middle ware distance is 75 millimeters;
Web plate 4: thick 12 millimeters steel plates;
Stretch-draw steel ring 5: long 100 millimeters A3F steel;
Joint steel ring 6: long 140 millimeters A3F steel;
33.5/25 millimeter coating steel pipe of embedded steel tube 7:398 * φ;
Grounding nut 8:40 * 40 * 40 millimeter, screw hole M16 millimeter, grey iron is zinc-plated, and pre-buried position is apart from 0.5 meter of electric pole butt buried depth lengthening;
7 of 6 millimeters reinforcement fabrications of interior stirrup 9: φ, 4 of 8 millimeters reinforcement fabrications of φ;
Concrete 10:
#φ 400
This electric pole measured performance parameter: cracking resistance moment of flexure 4315.0 kilogram-metres, ultimate bending moment 8910.0 kilogram-metres, factor of safety against cracking 0.87.
Claims (1)
1, a kind of partially prestressed electric wire pole with equal diameter, be the ring section, on the branch, in, hypomere, by non-prestressed main muscle 1, prestressing force master muscle 2, external spiral tendon 3, web plate 4, stretch-draw steel ring 5, joint steel ring 6, embedded steel tube 7, grounding nut 8, interior stirrup 9 and concrete 10 are formed, on, hypomere adopts whole, middle nothing is cut-off the non-prestressed main muscle 1 and the prestressing force master muscle 2 of overlap joint, it is characterized in that the electric pole stage casing also adopts whole, middle nothing is cut-off the non-prestressed main muscle 1 and the prestressing force master muscle 2 of overlap joint, and non-prestressed main muscle 1 passes behind the macropore of two ends web plate 4 all and every end joint steel ring 6 welding, and prestressing force master muscle 2 is upset into rivet-like with an end termination earlier, again rivet-like is upset in other end termination behind the aperture that passes two ends web plate 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106938 CN1012691B (en) | 1989-09-02 | 1989-09-02 | Partially prestressed electric wire pole with equal diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106938 CN1012691B (en) | 1989-09-02 | 1989-09-02 | Partially prestressed electric wire pole with equal diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041807A CN1041807A (en) | 1990-05-02 |
| CN1012691B true CN1012691B (en) | 1991-05-29 |
Family
ID=4856987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106938 Expired CN1012691B (en) | 1989-09-02 | 1989-09-02 | Partially prestressed electric wire pole with equal diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012691B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915006A (en) * | 2010-08-31 | 2010-12-15 | 上海电力线路器材有限公司 | High-strength electric pole |
| CN102010158B (en) * | 2010-09-27 | 2012-11-21 | 东莞市大忠电子有限公司 | Steel rim concrete |
| CN103031841A (en) * | 2012-12-31 | 2013-04-10 | 中国建筑西南勘察设计研究院有限公司 | Post-tensioned prestressing rectangular hollow foundation pit support pile |
| CN103485573B (en) * | 2013-08-30 | 2017-03-01 | 国家电网公司 | A kind of annular steel bar-sea sand concrete high-strength pole |
| CN109057503B (en) * | 2018-07-18 | 2020-09-11 | 安徽联众电力科技有限公司 | Construction convenience's high strength concrete pole |
| CN110863691A (en) * | 2019-09-12 | 2020-03-06 | 长沙晟丰电杆制造有限公司 | Special high-strength prestressed concrete pole |
-
1989
- 1989-09-02 CN CN 89106938 patent/CN1012691B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041807A (en) | 1990-05-02 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |