CN202706638U - Steel tube tower structure capable of effectively controlling breeze vibration - Google Patents
Steel tube tower structure capable of effectively controlling breeze vibration Download PDFInfo
- Publication number
- CN202706638U CN202706638U CN 201220353962 CN201220353962U CN202706638U CN 202706638 U CN202706638 U CN 202706638U CN 201220353962 CN201220353962 CN 201220353962 CN 201220353962 U CN201220353962 U CN 201220353962U CN 202706638 U CN202706638 U CN 202706638U
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- steel tube
- tube tower
- tower structure
- circular cross
- vibration
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Abstract
The utility model provides a steel tube tower structure capable of effectively controlling breeze vibration. Since breezed vibration of the component easily occurs, component of the steel tube tower is changed to a non-circular section component so that probability of occurrence of breeze vibration is effectively reduced. The most fundamental reason of breeze vibration of the steel tube tower is that a circular section is adopted by the component, the shape of the circular section is changed, so that difficulty of breeze vibration generating can be increased, and therefore, the non-circular section component which can not obviously increase structural wind load can reduce the probability of occurrence of breeze resonance. The steel tube tower structure capable of effectively controlling breeze vibration is simple in structure and easy to implement, and can choose more convenient and economical measures in the project according to actual needs.
Description
[technical field]
The utility model relates to the steel tube tower in electric transmission line field, refers in particular to a kind of steel tube tower structure of effective control aeolian vibration.
[background technology]
Because the structural formula steel tube tower shows the superiority stronger than angle steel tower in all many-sides, thereby in recent years in the construction of iron tower of power transmission line, constantly adopt the lattice steel tube tower take the circular section steel pipe as main member to replace angle steel tower.But the member that particularly is tending towards horizontal arrangement that some slenderness ratio in the steel tube tower is larger than a hour easy oscillation crosswise that occurs perpendicular to wind direction, often is called aeolian vibration at wind speed on the engineering.Because circuit is in the lower environment of wind speed for a long time, this vibration that continues repeatedly may cause the shaft tower bolt to connect loosening and component fatigue destroys.Owing to the vibration coupling effect of steel tower and lead wire and earth wire, the dither of hanging point position steel tube component can produce resonance with the high frequent vibration of wire, affects the effect of lead wire and earth wire antihunting device simultaneously.In order to address the above problem, mainly be to carry out according to existing tower structure design discipline at present, go to evade from design angle as far as possible.The problem of its existence is: find in practice can not very effectively control according to present rules the aeolian vibration of steel tube tower structure.
[summary of the invention]
The purpose of this utility model is to provide a kind of steel tube tower structure of effective control aeolian vibration.
For realizing the utility model purpose, provide following technical scheme:
The utility model provides a kind of steel tube tower structure of effective control aeolian vibration, and the member of the easy generation aeolian vibration of this steel tube tower changes into and adopts the on-circular cross-section member, can effectively reduce the occurrence probability of aeolian vibration.
What this on-circular cross-section member generally adopted is the member that can significantly not increase wind loads on structure.The the underlying cause of steel tube tower generation aeolian vibration is that member has adopted circular cross-section, change the shape of circular section, just can increase the difficulty that aeolian vibration produces, significantly not increase the occurrence probability that the on-circular cross-section of wind loads on structure member can reduce gentle breeze resonance so use instead.
In certain embodiments, to a small amount of stressed less or member of not stressing, can replace the circular section steel pipe with many ribs steel pipe that angle steel replaces original circular section steel pipe or adopts steel plate to roll.
In certain embodiments, can also reduce by appropriately choosing starting of oscillation critical wind velocity checking computations formula the occurrence probability of gentle breeze resonance.For example: for bolted plate pattern joint structure steel tube component, if the bolt axis is consistent with the aeolian vibration direction, choose the hinged corresponding critical wind velocity calculating formula in two ends; If bolt axis and aeolian vibration perpendicular direction are chosen the affixed corresponding critical wind velocity calculating formula in two ends; For the steel tube component that flange connects, its rod end constraint considers and chooses a critical wind velocity empirical formula between two ends are affixed and hinged.Its principle is: come the critical wind velocity of selected member to check formula according to the real border condition of member, and more can be from effectively control aeolian vibration of design stage.
In certain embodiments, this on-circular cross-section member is provided with the supplemental support material, can reduce the slenderness ratio of vibration component.This supplemental support material is chosen and is not stressed or stressed very little auxiliary material.Its slenderness ratio of member that gentle breeze resonance easily occurs is all larger, bending rigidity is little, member to vibration-generating, practical structures according to shaft tower, do not stress or stressed very little supplemental support material in the local location increase, increase bending rigidity, dwindle slenderness ratio, can improve its starting of oscillation critical wind velocity, reduce the occurrence probability of aeolian vibration.
In certain embodiments, this on-circular cross-section member is provided with direct-axis to the short rib of the interruption that distributes.
In further embodiments, this on-circular cross-section member is provided with direct-axis to the open sleeve that distributes.
In further embodiments, this on-circular cross-section member is provided with direct-axis to the staggered fin keel that distributes.
In certain embodiments, this on-circular cross-section component surface is wound with the flow-disturbing line.To some intrinsic frequency and the characteristic size member of malleable not, can suppress aeolian vibration by twining flow-disturbing line on its surface.
In certain embodiments, the canoe of this flow-disturbing line is the form of spirality cringle.The intrinsic frequency of some member, characteristic size etc. are malleable not, can reach the purpose that suppresses aeolian vibration by the Strouhal number that increases structure in this case, aeolian vibration for the working line steel tube tower, increase Strouhal number under the prerequisite that does not change the circular section basic configuration, increasing the spirality cringle in component surface is the most simple method.In further embodiments, the canoe of this flow-disturbing line is the form of stiff rib whirlpool countermeasure set.
In certain embodiments, be provided with damping material in on-circular cross-section member junction or component inside.The damping ratio content that improves structure can suppress vortex-induced vibration, particularly when the numeric ratio of damping ratio hour, effect is more obvious, increases damping and can reduce the amplitude that resonates, damping vibration is to structural damage.
The contrast prior art the utlity model has following advantage:
The utility model can effectively be controlled the aeolian vibration of steel tube tower structure, and easy enforcement simple in structure, can choose more convenient and economic measure according to actual conditions in engineering.
[description of drawings]
Fig. 1 is the schematic diagram of one of the utility model member embodiment;
Fig. 2 is the cross sectional view of Fig. 1;
Fig. 3 is two schematic diagram of the utility model member embodiment;
Fig. 4 is the cross sectional view of Fig. 3;
Fig. 5 is three schematic diagram of the utility model member embodiment;
Fig. 6 is four schematic diagram of the utility model member embodiment;
Fig. 7 is the cross sectional view of Fig. 6.
[specific embodiment]
The utility model provides a kind of steel tube tower structure of effective control aeolian vibration, and the member of the easy generation aeolian vibration of this steel tube tower changes into and adopts the on-circular cross-section member, can effectively reduce the occurrence probability of aeolian vibration.To a small amount of stressed less or member of not stressing, can replace the circular section steel pipe with many ribs steel pipe that angle steel replaces original circular section steel pipe or adopts steel plate to roll.
Can also reduce by appropriately choosing starting of oscillation critical wind velocity checking computations formula the occurrence probability of gentle breeze resonance.For example: for bolted plate pattern joint structure steel tube component, if the bolt axis is consistent with the aeolian vibration direction, choose the hinged corresponding critical wind velocity calculating formula in two ends; If bolt axis and aeolian vibration perpendicular direction are chosen the affixed corresponding critical wind velocity calculating formula in two ends; For the steel tube component that flange connects, its rod end constraint considers and chooses a critical wind velocity empirical formula between two ends are affixed and hinged.Its principle is: come the critical wind velocity of selected member to check formula according to the real border condition of member, and more can be from effectively control aeolian vibration of design stage.
This on-circular cross-section member is provided with and does not stress or stressed very little supplemental support material, can reduce the slenderness ratio of vibration component, increases bending rigidity, dwindles slenderness ratio, can improve its starting of oscillation critical wind velocity, reduces the occurrence probability of aeolian vibration.
See also Fig. 1 and Fig. 2, this on-circular cross-section member of the utility model embodiment one is provided with direct-axis to the short rib 1 of the interruption that distributes.
See also Fig. 3 and Fig. 4, this on-circular cross-section member of the utility model embodiment two is provided with direct-axis to the open sleeve 2 that distributes.
See also Fig. 5, this on-circular cross-section member of the utility model embodiment three is provided with direct-axis to the staggered fin keel that distributes.
See also Fig. 6 and Fig. 7, this on-circular cross-section component surface of the utility model embodiment four is wound with the flow-disturbing line, and the canoe of this flow-disturbing line is the form of spirality cringle.Can reach the purpose that suppresses aeolian vibration by the Strouhal number that increases structure.
Further, be provided with damping material in on-circular cross-section member junction or component inside.The damping ratio content that improves structure can suppress vortex-induced vibration, particularly when the numeric ratio of damping ratio hour, effect is more obvious, increases damping and can reduce the amplitude that resonates, damping vibration is to structural damage.
The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited to this, anyly all belongs within the utility model protection domain based on the equivalent transformation on the technical solutions of the utility model.
Claims (10)
1. a steel tube tower structure of effectively controlling aeolian vibration is characterized in that, the member of the easy generation aeolian vibration of this steel tube tower changes into and adopts the on-circular cross-section member.
2. the steel tube tower structure of effective control aeolian vibration as claimed in claim 1 is characterized in that, many ribs steel pipe that this on-circular cross-section member adopts angle steel or steel plate to roll.
3. the steel tube tower structure of effective control aeolian vibration as claimed in claim 1 is characterized in that, this on-circular cross-section member is provided with the supplemental support material.
4. the steel tube tower structure of effective control aeolian vibration as claimed in claim 3 is characterized in that, this on-circular cross-section member is provided with direct-axis to the short rib of the interruption that distributes.
5. the steel tube tower structure of effective control aeolian vibration as claimed in claim 3 is characterized in that, this on-circular cross-section member is provided with direct-axis to the open sleeve that distributes.
6. the steel tube tower structure of effective control aeolian vibration as claimed in claim 3 is characterized in that, this on-circular cross-section member is provided with direct-axis to the staggered fin keel that distributes.
7. such as the steel tube tower structure of claim 1 or 2 or 3 described effective control aeolian vibrations, it is characterized in that this on-circular cross-section component surface is wound with the flow-disturbing line.
8. the steel tube tower structure of effective control aeolian vibration as claimed in claim 7 is characterized in that, the canoe of this flow-disturbing line is the form of spirality cringle.
9. the steel tube tower structure of effective control aeolian vibration as claimed in claim 7 is characterized in that, the canoe of this flow-disturbing line is the form of stiff rib whirlpool countermeasure set.
10. such as the steel tube tower structure of claim 1 or 2 or 3 described effective control aeolian vibrations, it is characterized in that, be provided with damping material in on-circular cross-section member junction or component inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353962 CN202706638U (en) | 2012-07-20 | 2012-07-20 | Steel tube tower structure capable of effectively controlling breeze vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353962 CN202706638U (en) | 2012-07-20 | 2012-07-20 | Steel tube tower structure capable of effectively controlling breeze vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202706638U true CN202706638U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220353962 Expired - Lifetime CN202706638U (en) | 2012-07-20 | 2012-07-20 | Steel tube tower structure capable of effectively controlling breeze vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202706638U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265052A (en) * | 2014-10-21 | 2015-01-07 | 国家电网公司 | Vibration preventing hammer control method for vortex-induced wind vibration of electric power tower frame steel tube member |
| CN110847674A (en) * | 2019-11-22 | 2020-02-28 | 山东大学 | Breeze vibration energy consumption suppression device for rod piece of service steel pipe tower |
-
2012
- 2012-07-20 CN CN 201220353962 patent/CN202706638U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265052A (en) * | 2014-10-21 | 2015-01-07 | 国家电网公司 | Vibration preventing hammer control method for vortex-induced wind vibration of electric power tower frame steel tube member |
| CN110847674A (en) * | 2019-11-22 | 2020-02-28 | 山东大学 | Breeze vibration energy consumption suppression device for rod piece of service steel pipe tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |