CN114837316A - Method for inhibiting vortex-induced vibration of electric tower - Google Patents
Method for inhibiting vortex-induced vibration of electric tower Download PDFInfo
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- CN114837316A CN114837316A CN202210503428.2A CN202210503428A CN114837316A CN 114837316 A CN114837316 A CN 114837316A CN 202210503428 A CN202210503428 A CN 202210503428A CN 114837316 A CN114837316 A CN 114837316A
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- steel wire
- wire rope
- tower
- vortex
- electric tower
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002401 inhibitory effect Effects 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 238000013016 damping Methods 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000001629 suppression Effects 0.000 claims abstract description 5
- 241000446313 Lamella Species 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 4
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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
-
- 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
- E04H12/24—Cross arms
-
- 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
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
An electric tower vortex-induced vibration suppression method belongs to the technical field of power transmission and transformation tower vortex-induced vibration suppression. The upper ends of a plurality of steel wire rope damping devices are connected with the cross arm at the lowest layer of the electric tower, the lower ends of the steel wire rope damping devices are connected with the electric tower foundation, the plurality of steel wire rope damping devices form an elastic peripheral frame of the electric tower, when the tower body deforms under the action of wind and cable galloping, the steel wire rope damping devices generate pulling force on the tower body, the tower body is restrained from further deforming, and the vortex vibration frequency of wind and the cable galloping frequency cannot be consistent with the natural frequency of the tower body due to the fact that the pulling force changes along with the wind force, and therefore vortex-induced vibration suppression of the electric tower is achieved. The steel wire rope damping device is structurally characterized in that: one end of the steel wire rope penetrates through the bayonet hanging ring I and then is bundled and fixed by the steel wire rope clamp I, the other end of the steel wire rope penetrates through the flower basket hanging ring II and then is bundled and fixed by the steel wire rope clamp II, one end of the steel wire rope II penetrates through the flower basket hanging ring III and then is bundled by the steel wire rope clamp III, and the other end of the steel wire rope penetrates through the foundation bolt hanging ring IV and then is bundled and fixed by the steel wire rope clamp IV. The method is used for suppressing the vortex-induced vibration of the electric tower.
Description
Technical Field
The invention belongs to the technical field of transmission and transformation tower vortex-induced vibration suppression, and particularly relates to a method for suppressing electric tower vortex-induced vibration.
Background
The existing power transmission and transformation tower is generally formed by a multi-section truss structure, the truss structure is connected in a bolt connection or welding mode, and under the action of wind, the wind-tower line system generates resonance to cause the structural damage of the power tower.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for inhibiting electric tower vortex-induced vibration.
The invention adopts variable damping technology, and connects a plurality of steel wire rope damping devices between the lowermost cross arm and the electric tower foundation of the electric tower, thereby forming a damping frame surrounding the electric tower, and the frame comprises a tower section from the lowermost cross arm to the electric tower foundation, so that wind vortex vibration frequency and cables can not generate resonance, and the structural damage of the electric tower is avoided.
In order to realize the purpose, the technical scheme of the invention is as follows:
a method for suppressing vortex-induced vibration of an electric tower comprises the following steps: the upper ends of a plurality of steel wire rope damping devices are fixedly connected with the cross arm at the lowest layer of the electric tower, the lower ends of the plurality of steel wire rope damping devices are fixedly connected with the electric tower foundation, the plurality of steel wire rope damping devices form an elastic peripheral frame of the electric tower, when the tower body deforms under the action of wind and cable galloping, the steel wire rope damping devices generate tensile force on the tower body to inhibit the tower body from further deforming, and the vortex vibration frequency and the cable galloping frequency of wind cannot be consistent with the natural frequency of the tower body due to the fact that the tensile force changes along with the wind force, and therefore vortex-induced vibration inhibition of the electric tower is achieved.
Furthermore, each of the steel wire rope damping devices comprises a buckle, a first steel wire rope, a basket, a second steel wire rope and a foundation bolt; one end of the steel wire rope penetrates through a first hanging ring at the lower end of the bayonet and then is bundled and fixed by a plurality of first steel wire rope clamps, the other end of the steel wire rope penetrates through a second hanging ring at one end of the flower basket and then is bundled and fixed by a plurality of second steel wire rope clamps, one end of the steel wire rope penetrates through a third hanging ring at the other end of the flower basket and then is bundled by a plurality of third steel wire rope clamps, and the other end of the steel wire rope penetrates through a fourth hanging ring of the foundation bolt and then is bundled and fixed by a plurality of fourth steel wire rope clamps; the buckle and the cross arm at the lowest layer of the electric tower are fixedly connected, and the foundation bolt is fixedly connected with the electric tower foundation.
Furthermore, the buckle comprises a first hanging ring and two buckle petals; the middle parts of the two buckle petals are respectively provided with a semicircular groove, the two semicircular grooves of the two buckle petals are oppositely arranged, the upper end and the lower end of the two buckle petals are respectively provided with a through hole, the semicircular grooves of the two buckle petals surround the oblique main string at the bottom of the cross arm of the electric tower, the first hanging ring is arranged between the lower ends of the two buckle petals, a connecting bolt penetrates through the through holes at the upper ends of the two buckle petals and is locked and fixed through a gasket and a nut, and a connecting bolt penetrates through the through holes at the lower ends of the two buckle petals and the first hanging ring and is locked and fixed through a gasket and a nut.
Further, the number of the plurality of wire rope damping devices is four.
The number of the plurality of steel wire rope clamps I, the number of the plurality of steel wire rope clamps II, the number of the plurality of steel wire rope clamps III and the number of the plurality of steel wire rope clamps IV are at least three respectively.
Compared with the prior art, the invention has the beneficial effects that: the steel wire rope damping device is simple in structure and convenient to install and use. The method of the invention is utilized to form a damping outer frame by a plurality of steel wire rope damping devices at the periphery of the tower body, and utilizes the characteristic that the steel wire ropes and the flower baskets have elasticity, when the tower body deforms under the action of wind and cable galloping, the steel wire ropes and the flower baskets generate pulling force on the tower body to restrain the further deformation of the tower body.
Drawings
FIG. 1 is a schematic structural view of a steel wire rope damping device of the present invention connected to a power transmission and transformation tower;
FIG. 2 is a front view of the buckle;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a perspective view of the buckle;
FIG. 5 is an enlarged view of a portion of FIG. 1 at A;
fig. 6 is a partially enlarged view of fig. 1 at B.
The names and reference numbers of the components referred to in the above figures are as follows:
the electric tower comprises a cross arm 1 at the lowest layer, a buckle 2, a first steel wire rope 3, a flower basket 4, a second steel wire rope 5, a foundation bolt 6, a buckle flap 7, a first hanging ring 8, a gasket 9 and a connecting bolt 10.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 to 6, the present embodiment describes a method for suppressing electric tower vortex-induced vibration, the method including: the upper ends of a plurality of steel wire rope damping devices are fixedly connected with the cross arm 1 at the lowest layer of the electric tower, the lower ends of the plurality of steel wire rope damping devices are fixedly connected with the electric tower foundation, the plurality of steel wire rope damping devices form an elastic peripheral frame of the electric tower, when the tower body deforms under the action of wind and cable galloping, the steel wire rope damping devices generate tensile force on the tower body to inhibit the tower body from further deforming, and the vortex vibration frequency and the cable galloping frequency of wind cannot be consistent with the natural frequency of the tower body due to the fact that the tensile force changes along with the wind force, and therefore vortex-induced vibration inhibition of the electric tower is achieved.
Further, as shown in fig. 1 to 6, each of the plurality of steel wire rope damping devices includes a buckle 2, a first steel wire rope 3, a flower basket 4 (which is an existing component), a second steel wire rope 5, and an anchor bolt 6; one end of the first steel wire rope 3 penetrates through a first hanging ring 8 at the lower end of the bayonet 2 and is then bundled and fixed by a plurality of first steel wire rope clamps, the other end of the first steel wire rope 3 penetrates through a second hanging ring at one end of the flower basket 4 and is then bundled and fixed by a plurality of second steel wire rope clamps, one end of the second steel wire rope 5 penetrates through a third hanging ring at the other end of the flower basket 4 and is then bundled by a plurality of third steel wire rope clamps, and the other end of the second steel wire rope 5 penetrates through a fourth hanging ring of the foundation bolt 6 and is then bundled and fixed by a plurality of fourth steel wire rope clamps; the buckle 2 is fixedly connected with the cross arm 1 at the lowest layer of the electric tower, and the foundation bolt 6 is fixedly connected with the foundation of the electric tower.
Further, as shown in fig. 1 to 6, the buckle 2 includes a hanging ring one 8 and two buckle flaps 7; the middle part of two buckle lamella 7 all is equipped with semicircular groove, and two semicircular groove of two buckle lamella 7 set up relatively, and the upper and lower both ends of two buckle lamella 7 all are equipped with the through-hole, and the semicircular groove of two buckle lamella 7 surrounds the oblique main chord in 1 bottom of electricity tower cross arm, rings 8 set up between the lower extreme of two buckle lamella 7, and it has connecting bolt 10 and through packing ring 9 and nut locking fixed to penetrate in the through-hole of two buckle lamella 7 upper ends, has penetrated connecting bolt 10 in through-hole and the rings 8 of two buckle lamella 7 lower extremes to it is fixed through packing ring 9 and nut locking.
Further, the number of the plurality of wire rope damping devices is four.
Furthermore, the number of the plurality of first wire rope clamps, the number of the plurality of second wire rope clamps, the number of the plurality of third wire rope clamps and the number of the plurality of fourth wire rope clamps are at least three respectively (the binding can be firmer).
The working principle is as follows: the upper ends of a plurality of steel wire rope damping devices (preferably the number of the steel wire rope damping devices is four) are connected with the cross arm 1 at the lowest layer of the electric tower, the lower ends of the steel wire rope damping devices are connected with the electric tower foundation, and the steel wire rope damping devices form an elastic peripheral frame of the electric tower. When the tower body of the electric tower deforms under the action of wind and cable galloping, the corresponding steel wire rope damping device is pulled to restrain the deformation of the tower body, and the tensile force generated by the steel wire rope damping device (the steel wire rope-basket damping device) on the tower body is changed along with the wind power, so that the vortex vibration frequency and the cable galloping frequency of wind cannot resonate with the natural frequency of the tower body, and the structure of the tower body is damaged.
The above embodiments are merely illustrative of the present patent and do not limit the scope of the patent, and those skilled in the art can make modifications to the parts thereof without departing from the spirit and scope of the patent.
Claims (5)
1. A method for suppressing vortex-induced vibration of an electric tower is characterized by comprising the following steps: the method comprises the following steps: the upper ends of a plurality of steel wire rope damping devices are fixedly connected with a cross arm (1) at the lowest layer of an electric tower, the lower ends of the steel wire rope damping devices are fixedly connected with an electric tower foundation, an elastic peripheral frame of the electric tower is formed by the steel wire rope damping devices, when a tower body deforms under the action of wind and cable galloping, the steel wire rope damping devices generate pulling force on the tower body to inhibit the tower body from further deforming, and the vortex vibration frequency of the wind and the cable galloping frequency cannot be consistent with the natural frequency of the tower body due to the fact that the pulling force changes along with the wind force, so that the vortex-induced vibration inhibition of the electric tower is achieved.
2. The method for suppressing electric tower vortex-induced vibration of claim 1, wherein: the steel wire rope damping devices comprise buckles (2), first steel wire ropes (3), flower baskets (4), second steel wire ropes (5) and foundation bolts (6); one end of the first steel wire rope (3) penetrates through a first hanging ring (8) at the lower end of the bayonet (2) and then is bundled and fixed by a plurality of first steel wire rope clamps, the other end of the first steel wire rope (3) penetrates through a second hanging ring at one end of the flower basket (4) and then is bundled and fixed by a plurality of second steel wire rope clamps, one end of the second steel wire rope (5) penetrates through a third hanging ring at the other end of the flower basket (4) and then is bundled by a plurality of third steel wire rope clamps, and the other end of the second steel wire rope (5) penetrates through a fourth hanging ring of the foundation bolt (6) and then is bundled and fixed by a plurality of fourth steel wire rope clamps; the buckle (2) is fixedly connected with the cross arm (1) at the lowest layer of the electric tower, and the foundation bolt (6) is fixedly connected with the electric tower foundation.
3. The method for suppressing electric tower vortex-induced vibration of claim 2, wherein: the buckle (2) comprises a first hanging ring (8) and two buckle flaps (7); the middle part of two buckle lamella (7) all is equipped with semicircular groove, and two semicircular groove of two buckle lamella (7) set up relatively, and the upper and lower both ends of two buckle lamella (7) all are equipped with the through-hole, and the semicircular groove of two buckle lamella (7) surrounds the oblique major chord in electricity tower cross arm (1) bottom, rings (8) set up between the lower extreme of two buckle lamella (7), and it has connecting bolt (10) and through packing ring (9) and nut locking fixed to penetrate in the through-hole of two buckle lamella (7) upper end, and through-hole and rings (8) of two buckle lamella (7) lower extreme penetrate connecting bolt (10) to it is fixed to lock through packing ring (9) and nut.
4. An electric tower vortex induced vibration suppression method according to claim 1 or 2, characterized in that: the number of the plurality of steel wire rope damping devices is four.
5. The method for suppressing electric tower vortex-induced vibration of claim 1, wherein: the number of the plurality of steel wire rope clamps I, the number of the plurality of steel wire rope clamps II, the number of the plurality of steel wire rope clamps III and the number of the plurality of steel wire rope clamps IV are at least three respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210503428.2A CN114837316A (en) | 2022-05-09 | 2022-05-09 | Method for inhibiting vortex-induced vibration of electric tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210503428.2A CN114837316A (en) | 2022-05-09 | 2022-05-09 | Method for inhibiting vortex-induced vibration of electric tower |
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| Publication Number | Publication Date |
|---|---|
| CN114837316A true CN114837316A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210503428.2A Pending CN114837316A (en) | 2022-05-09 | 2022-05-09 | Method for inhibiting vortex-induced vibration of electric tower |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148674Y (en) * | 2007-12-27 | 2008-11-12 | 华东电网有限公司 | Viscoelasticity wind vibration fatigue control damper |
| CN209040660U (en) * | 2018-09-09 | 2019-06-28 | 周剑锋 | One kind can prevent inclined transmission of electricity lever system |
| CN110374010A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | A kind of constructing device and its application method of the interim vibration damping of suspension cable |
| CN214170119U (en) * | 2020-11-26 | 2021-09-10 | 东亚电力建设有限公司 | Iron tower with strong wind resistance for high-voltage power transmission line engineering |
| CN215107815U (en) * | 2021-01-28 | 2021-12-10 | 浙江八达电子仪表有限公司铁塔分公司 | Strong wind-resistant shockproof transmission tower |
| CN215168585U (en) * | 2021-01-28 | 2021-12-14 | 无锡市顺天铁塔器材制造有限公司 | Antidumping reinforcement type high tension transmission line iron tower with drive bird lightning protection function |
-
2022
- 2022-05-09 CN CN202210503428.2A patent/CN114837316A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148674Y (en) * | 2007-12-27 | 2008-11-12 | 华东电网有限公司 | Viscoelasticity wind vibration fatigue control damper |
| CN209040660U (en) * | 2018-09-09 | 2019-06-28 | 周剑锋 | One kind can prevent inclined transmission of electricity lever system |
| CN110374010A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | A kind of constructing device and its application method of the interim vibration damping of suspension cable |
| CN214170119U (en) * | 2020-11-26 | 2021-09-10 | 东亚电力建设有限公司 | Iron tower with strong wind resistance for high-voltage power transmission line engineering |
| CN215107815U (en) * | 2021-01-28 | 2021-12-10 | 浙江八达电子仪表有限公司铁塔分公司 | Strong wind-resistant shockproof transmission tower |
| CN215168585U (en) * | 2021-01-28 | 2021-12-14 | 无锡市顺天铁塔器材制造有限公司 | Antidumping reinforcement type high tension transmission line iron tower with drive bird lightning protection function |
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Application publication date: 20220802 |