CN204001928U - Transmission line angle-steel tower leg structure after a kind of reinforcing - Google Patents
Transmission line angle-steel tower leg structure after a kind of reinforcing Download PDFInfo
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- CN204001928U CN204001928U CN201420115683.0U CN201420115683U CN204001928U CN 204001928 U CN204001928 U CN 204001928U CN 201420115683 U CN201420115683 U CN 201420115683U CN 204001928 U CN204001928 U CN 204001928U
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- Prior art keywords
- angle
- reinforcing
- tower leg
- steel
- tower
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 72
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 50
- 230000002787 reinforcement Effects 0.000 claims abstract description 16
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses the transmission line angle-steel tower leg structure after a kind of reinforcing, comprise tower leg main material, oblique material and boots plate, on tower leg main material top, be welded with reinforcing angle I, on boots plate, be welded with sketch plate, on reinforcing angle I and sketch plate, be fixed with reinforcing angle II, wherein, the top of the lower end reinforcement of weld angle steel II of reinforcing angle I, the bottom of the inner side reinforcement of weld angle steel II of sketch plate, reinforcing angle I, reinforcing angle II are connected by weld seam with sketch plate three.The utility model is that reinforcing angle and former tower leg angle steel are metallurgical binding, and the secondary loading phenomenon of having avoided bolt power transmission to cause, can improve consolidation effect to greatest extent; Have advantages of that intensity is large, firm and durable.
Description
Technical field
The utility model relates to the transmission line angle-steel tower leg structure after a kind of reinforcing.
Background technology
Overhead power transmission is erected at transmission pressure on shaft tower with insulator and gold utensil, thereby wire is maintained a certain distance ground and building.With cable power transmission, compare, overhead power transmission has small investment, Maintenance and Repair advantage easily, is therefore applied widely.For the higher overhead wire of electric pressure, generally select load ability to bear strong, floor space is little, and the steel tower of service life length is as holder.Yet because the old circuit of part pattern exists design defect, in when design, exist and bear that wind carries and the shortcoming of anti-ice cover ability, in use occur the accident of falling tower, need carry out consolidation process.
(7727) the 110 kilovolts of double loop straight line towers of ZGU2 of take are example, and this tower is widely used in line design in the past in 2005.After within 2005, national grid Typical Design of Transmission Lines within Voltage is published, this tower has not been made recommendation.Because the tower material size design remaining of ZGU2 tower is not enough, under extreme weather conditions, easily cause steel tower to topple, bring serious potential safety hazard, therefore need carry out consolidation process.
Tower leg is partly positioned at the foot of steel tower, and the upper end of tower leg is connected with tower body, and hypomere is connected with basis, in iron tower structure, the stressed maximum of tower leg part, therefore from meeting intensity, stability and deformation requirements aspect, it is to improve the vital link of steel tower overall performance that steel tower tower leg is reinforced.
Existing technology adopts the increasing section technology of bolt angle steel in parallel, in the side of former member, passes through junction plate and a bolt new same specification angle steel in parallel, forms new compound section member, and then improves the supporting capacity of structure.Yet adopt this reinforcement means to carry out the reinforcing of steel tower tower leg, have following shortcoming:
(1) adopt bolt that reinforcing angle is reinforced to tower leg with the method for former tower material parallel connection, need on the boots plate of the main material of former angle steel and steel tower, open a large amount of bolts hole, the remitted its fury that not only complex process, and perforate causes also becomes potential safety hazard.
(2) reinforcing of angle member at present, the new angle iron component of parallel connection with bolts forms this method of combined member.Adopting this kind of method, newly add member and have stress hysteresis, there is secondary loading phenomenon in whole composite reinforcement part, gives the stressed adverse effect of bringing of integral body of steel tower.
(3), there is main material, tiltedly material is with boots board connecting structure in angle-steel tower shank position, complex-shaped and bolt quantity is more, when arranging girth member, usually causes reinforcing limited location, to reinforcing, brings larger difficulty.
All there is the shortcoming insecure, intensity is little in the tower leg that utilizes said method to reinforce.
Utility model content
For addressing the above problem, the utility model, for (7727) 110 kilovolts of double loop straight line towers of ZGU2, proposes the transmission line angle-steel tower leg structure after a kind of reinforcing, and this structure has advantages of that intensity is large, firm and durable.
To achieve these goals, the utility model adopts following technical scheme.
Transmission line angle-steel tower leg structure after a kind of reinforcing, comprise tower leg main material, oblique material and boots plate, on tower leg main material top, be welded with reinforcing angle I, on boots plate, be welded with sketch plate, on reinforcing angle I and sketch plate, be fixed with reinforcing angle II, wherein, the top of the lower end reinforcement of weld angle steel II of reinforcing angle I, the bottom of the inner side reinforcement of weld angle steel II of sketch plate, reinforcing angle I, reinforcing angle II are connected by weld seam with sketch plate three.
Described reinforcing angle I is than the wide 0-30mm of length on tower leg main material angle steel limit, and selected reinforcing angle I is than the large 0-10mm of thickness on tower leg main material angle steel limit.
Described reinforcing angle II is than the wide 0-30mm of length on tower leg main material angle steel limit, and selected reinforcing angle II is than the large 0-10mm of thickness on tower leg main material angle steel limit.
Described sketch plate is quadrangle steel plate, and these tetragonal two diagonal angles are right angle, and the difference of the number of degrees at another angle and tower leg main material and tiltedly the angle number of degrees of material is in [5 °, 5 °].
The function of the utility model main innovation:
The Promethean mode of welding that adopted of the utility model is reinforced tower leg, and the tower leg after this reinforcing adopts finite element program to calculate power transmission tower bearing load ability before and after reinforcing.Result shows that the equivalent stress maximum value of former tower leg main limb of (30m/s) steel tower under typhoon is far more than design value for strength of material, and rod member intensity does not meet instructions for use, will cause toppling.Tower leg steel tower equivalent stress value after reinforcing declines obviously, and Q345 angle steel stress maximum value is 156MPa, much smaller than Intensity Design value 310MPa.Steel tower wind load resistance ability significantly improves, and meets the requirement of safe operation completely.
The beneficial effects of the utility model: compare with former bolt connection, tool has the following advantages:
(1) angle steel newly increasing directly links together with former member by the mode being welded to connect, and forms firmly metallurgical binding, and without carrying out perforate processing, the remitted its fury hidden danger of having avoided perforate to cause, has improved reinforcing safety.
(2) reinforcing angle and former tower leg angle steel are metallurgical binding, and the secondary loading phenomenon of having avoided bolt power transmission to cause can improve consolidation effect to greatest extent.
(3) have advantages of that intensity is large, firm and durable.
Accompanying drawing explanation
Fig. 1 is angle steel tower tower leg reinforcing portion position schematic diagram;
Fig. 2 a is former tower leg schematic diagram;
Fig. 2 b is former tower leg top view;
Fig. 3 a is the tower leg schematic diagram after reinforcement of weld angle steel I;
Fig. 3 b is the tower leg top view after reinforcement of weld angle steel I;
Fig. 4 a is for welding the tower leg schematic diagram after sketch plate;
Fig. 4 b is for welding the tower leg top view after sketch plate;
Fig. 5 a is the tower leg schematic diagram after reinforcement of weld angle steel II;
Fig. 5 b is the tower leg top view after reinforcement of weld angle steel II.
Wherein: 1, tower leg main material; 2, boots plate; 3, seat board; 4, oblique material; 5, reinforcing angle I; 6, sketch plate; 7, reinforcing angle II; 8, weld seam.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 5 a, transmission line angle-steel tower leg structure after a kind of reinforcing, comprise tower leg main material 1, oblique material 4 and boots plate 2, on tower leg main material 1 top, be welded with reinforcing angle I5, on boots plate 2, be welded with sketch plate 6, on reinforcing angle I and sketch plate, be fixed with reinforcing angle II, wherein, the top of the lower end reinforcement of weld angle steel II7 of reinforcing angle I, the bottom of the inner side reinforcement of weld angle steel II7 of sketch plate 6, reinforcing angle I5, reinforcing angle II7 are connected by weld seam with sketch plate 6 threes.
Reinforcing angle I5 is than the wide 0-30mm of length on tower leg main material 1 angle steel limit, and selected reinforcing angle I5 is than the large 0-10mm of thickness on tower leg main material 1 angle steel limit.
Reinforcing angle II7 is than the wide 0-30mm of length on tower leg main material 1 angle steel limit, and selected reinforcing angle II7 is than the large 0-10mm of thickness on tower leg main material 1 angle steel limit.
Sketch plate 6 is quadrangle steel plate, and these tetragonal two diagonal angles are right angle, the number of degrees at another angle and tower leg main material 1 with the difference of the oblique angle number of degrees of material 4 in [5 °, 5 °].
The reinforcement of weld method of above-mentioned tower leg structure is:
1. according to former tower leg main material, 1 dimensions is selected to need to reinforce to use angle steel size, selected reinforcing angle I5, reinforcing angle II7,7mm larger 6 than the main material angle steel of former angle steel tower tower leg hem width b respectively in tower leg main material 1 angle steel size, reinforcing angle I5, reinforcing angle II7 are respectively than thick large 4, the 5mm in the main material angle steel of former angle steel tower tower leg limit.
2. in reinforcing process, girth member is selected welding manner with the connection of former angle steel tower parts, and welding method is selected stick electrode arc welding, and welding material recommends to select E4303 model welding rod.
3. welding current is selected: adopt diameter 2.5mm welding rod, welding current is 60A-100A;
4. girth member fillet weld fillet weld size is 3mm-8mm.
5. angle steel tower footing as shown in Figure 1, is the connected tower leg main material of same boots plate.
6. unguyed front angle steel tower tower leg is as shown in Fig. 2 a, Fig. 2 b, and the main material of angle steel links together with boots plate by bolt.
7., while reinforcing, first carry out the reinforcing angle welding of tower leg main material top.Adopt step 2,3 to recommend technological parameter to weld.Adopt weld seam 8 in Fig. 3 a, Fig. 3 b that reinforcing angle I5 is welded together with iron tower main material.
8. after completing the welding of tower leg top angle steel reinforced, carry out the sketch plate welding of boots board position, sketch plate 6 shapes are shown in shown in Fig. 4 a, Fig. 4 b, and sketch plate 6 is connected on boots plate 2 by weld seam in Fig. 4 a, Fig. 4 b.
9. carry out tower leg bottom and reinforce main material welding, this part reinforcing angle connects with top reinforcing angle by weld seam 8 in Fig. 5 a, Fig. 5 b, and bottom connects with sketch plate by weld seam 8, by this sketch plate 6, is connected on former tower leg boots plate 2.
10. after having reinforced, adopt Angle polishing machine, or component surface zinc coat is occurred to destroy wire brush and Polluted area is cleared up, guarantee that former supporting leg and girth member surface thereof are without oil, rust, oxide skin and other dirts, metallic luster must expose in former zinc coat destruction place.
The position, gap that 11. reinforcing angles form with tower leg main material and boots plate and seat board, recommends to select neutral mildew-resistant weather-resistant glue to carry out encapsulation process, prevents from that rainwater etc. from entering to cause corrosion.
12. component surface polishings meet requirement in step 9, and fluid sealant solidifies the rear zinc-rich paint that sprays in time to be processed.Adopt zinc content to be greater than 90% cold galvanizing spray and carry out preservative treatment.In cold galvanizing process, first zinc layer can spray second after being dried, and carries out antiseptic cold galvanizing layer thickness average and is not less than 116 μ m, and minimum value is not less than 100 μ m.After brushing or having sprayed, must guarantee anticorrosive coat uniformity, without defects such as holiday, bubble, variable color, loss of gloss.
Adopt finite element program to calculate power transmission tower bearing load ability before and after reinforcing.Before result shows to reinforce, under typhoon, the equivalent stress maximum value of the main limb of (30m/s) steel tower is far more than design value for strength of material, and rod member intensity does not meet instructions for use, will cause toppling.After adopting reinforcement of weld, steel tower equivalent stress value declines obviously, and Q345 angle steel stress maximum value is 156MPa, much smaller than Intensity Design value 310MPa.Steel tower wind load resistance ability significantly improves, and meets the requirement of safe operation completely.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (4)
1. the transmission line angle-steel tower leg structure after a reinforcing, comprise tower leg main material, oblique material and boots plate, it is characterized in that: on tower leg main material top, be welded with reinforcing angle I, on boots plate, be welded with sketch plate, on reinforcing angle I and sketch plate, be fixed with reinforcing angle II, wherein, the top of the lower end reinforcement of weld angle steel II of reinforcing angle I, the bottom of the inner side reinforcement of weld angle steel II of sketch plate, the space between reinforcing angle I, reinforcing angle II and sketch plate three connects by weld seam.
2. the transmission line angle-steel tower leg structure after a kind of reinforcing as claimed in claim 1, is characterized in that: described reinforcing angle I is than the wide 0-30mm of length on tower leg main material angle steel limit, and selected reinforcing angle I is than the large 0-10mm of thickness on tower leg main material angle steel limit.
3. the transmission line angle-steel tower leg structure after a kind of reinforcing as claimed in claim 1, is characterized in that: described reinforcing angle II is than the wide 0-30mm of length on tower leg main material angle steel limit, and selected reinforcing angle II is than the large 0-10mm of thickness on tower leg main material angle steel limit.
4. the transmission line angle-steel tower leg structure after a kind of reinforce as claimed in claim 1, it is characterized in that: described sketch plate is quadrangle steel plate, and these tetragonal two diagonal angles are right angle, the difference of the number of degrees at another angle and tower leg main material and tiltedly the angle number of degrees of material is in [5 °, 5 °].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115683.0U CN204001928U (en) | 2014-03-14 | 2014-03-14 | Transmission line angle-steel tower leg structure after a kind of reinforcing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115683.0U CN204001928U (en) | 2014-03-14 | 2014-03-14 | Transmission line angle-steel tower leg structure after a kind of reinforcing |
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| Publication Number | Publication Date |
|---|---|
| CN204001928U true CN204001928U (en) | 2014-12-10 |
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| CN201420115683.0U Expired - Lifetime CN204001928U (en) | 2014-03-14 | 2014-03-14 | Transmission line angle-steel tower leg structure after a kind of reinforcing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798188A (en) * | 2018-08-29 | 2018-11-13 | 国网江苏省电力有限公司 | Steel tower section reinforced structure |
| CN113482034A (en) * | 2021-06-23 | 2021-10-08 | 国网山西省电力公司阳泉供电公司 | Deviation rectifying method for uneven settlement of power transmission iron tower |
| CN114233036A (en) * | 2021-12-10 | 2022-03-25 | 南方电网科学研究院有限责任公司 | Through-type angle steel transmission tower reinforcing apparatus |
-
2014
- 2014-03-14 CN CN201420115683.0U patent/CN204001928U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798188A (en) * | 2018-08-29 | 2018-11-13 | 国网江苏省电力有限公司 | Steel tower section reinforced structure |
| CN113482034A (en) * | 2021-06-23 | 2021-10-08 | 国网山西省电力公司阳泉供电公司 | Deviation rectifying method for uneven settlement of power transmission iron tower |
| CN113482034B (en) * | 2021-06-23 | 2023-07-14 | 国网山西省电力公司阳泉供电公司 | Deviation correcting method for differential settlement of power transmission tower |
| CN114233036A (en) * | 2021-12-10 | 2022-03-25 | 南方电网科学研究院有限责任公司 | Through-type angle steel transmission tower reinforcing apparatus |
| CN114233036B (en) * | 2021-12-10 | 2023-07-11 | 南方电网科学研究院有限责任公司 | Through type angle steel transmission tower reinforcing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wang Yue Central Road Ji'nan City, Shandong province 250002 City No. 2000 Patentee after: State Grid Corporation of China Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: SHANDONG ELECTRIC POWER INDUSTRY BOILER AND PRESSURE VESSEL INSPECTION CENTER Co.,Ltd. Address before: Wang Yue Central Road Ji'nan City, Shandong province 250002 City No. 2000 Patentee before: State Grid Corporation of China Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: SHANDONG ELECTRIC INDUSTRIAL BOILER AND PRESSURE VESSEL INSPECTION CENTER |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |
|
| CX01 | Expiry of patent term |