CN113668932B - Long-span transmission tower shaft with function of tuned mass damper - Google Patents
Long-span transmission tower shaft with function of tuned mass damper Download PDFInfo
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- CN113668932B CN113668932B CN202110864356.XA CN202110864356A CN113668932B CN 113668932 B CN113668932 B CN 113668932B CN 202110864356 A CN202110864356 A CN 202110864356A CN 113668932 B CN113668932 B CN 113668932B
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- transmission tower
- shaft
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- mass damper
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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
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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
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/005—Lift shafts
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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
- 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
- E04H9/02—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 withstanding earthquake or sinking of ground
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- Architecture (AREA)
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- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a large-span transmission tower shaft with a tuned mass damper function, belonging to the technical field of transmission tower vibration reduction and comprising the following steps: a power transmission tower main body; the main rod is provided with a plurality of pieces which are respectively arranged on the periphery of the power transmission tower main body; the circular shaft is arranged at the inner center of the power transmission tower; the invention realizes the functions of the elevator shaft in windless and windless conditions and the vibration damping function of the tuned mass damper in strong wind conditions by arranging the vibration dampers, and has the advantages of simple and convenient installation and no increase of the installation space of the damper and the wind load of the damper.
Description
Technical Field
The invention relates to a large-span transmission tower shaft with a tuned mass damper function, and belongs to the technical field of transmission tower vibration reduction.
Background
The distribution and the demand of electric power resources in China are not matched, and an electric power transmission system needs to be developed vigorously to relieve the contradiction of power utilization. The transmission line needs to cross large rivers and large-span transmission towers, so that a large span between the two towers, such as more than 2km, can be realized. The height of the large-span power transmission tower can reach more than 300m, the maximum height of the large-span power transmission tower built in China at present reaches 385m, and wind load becomes the main control load of the large-span power transmission tower. Due to global climate change, extreme weather such as typhoon, thunderstorm wind, tornado and the like is frequent, and strong wind weather causes wind-induced response of the large-span power transmission tower to be increased, so that the use function of the large-span power transmission tower is influenced to a certain extent. Measures to reduce wind-induced responses such as top displacement and acceleration have been proposed for large-span transmission towers.
Common vibration reduction measures for large-span power transmission towers are to increase the rigidity of the structure and to increase the damping of the structure. Measures to increase the structural rigidity require the section of the structural mast to be enlarged, and since the section of the large-span power transmission tower is already large enough, increasing the size of the tower would entail greater investment, and therefore this method requires consideration. A more common measure is to increase the damping of the structure, i.e. by adding a damper. Due to the reasons of installation and the like, according to data research, no damper is installed on a large-span power transmission tower at present, and the reasons are that the dead weight of the large-span power transmission tower is too large, and the conventional friction type damper and the conventional viscous type damper are not suitable due to too small output; due to the fact that the tuned mass damper, the tuned liquid damper and the like are large in installation difficulty, need to occupy a certain installation space, increase wind load and the like, application of the tuned mass damper and the tuned liquid damper to a large-span power transmission tower is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a large-span power transmission tower shaft with a tuned mass damper function, and solves the problems that the tuned mass damper on a large-span power transmission tower is difficult to install, the damper occupies the space of the power transmission tower, and the wind load is increased after the damper is installed in the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides a large-span transmission tower shaft with a tuned mass damper function, which comprises:
a power transmission tower main body;
the main rod is provided with a plurality of pieces which are respectively arranged on the periphery of the power transmission tower main body;
the circular shaft is arranged at the inner center of the power transmission tower;
and a plurality of vibration damping devices are arranged and are respectively arranged between the circular shaft and the plurality of main rods.
Further, vibration damper includes first vaulting pole, second vaulting pole, damping element, spring element and two connecting plates, install damping element and spring element between first vaulting pole and the second vaulting pole, damping element and spring element parallel arrangement are on two connecting plates, connecting plate one end is connected with the mobile jib through first vaulting pole, and the other end is connected with circular pit shaft through the second vaulting pole.
Furthermore, an elevator is arranged inside the round shaft, and an artificial ladder stand is arranged outside the round shaft.
Further, the tower body of the power transmission tower main body is provided with a transverse partition surface, and the vibration damping device can select one transverse partition surface or a plurality of transverse partition surfaces to be arranged.
Further, the damping element and the spring element are matched with different damping values and rigidity values according to the self-vibration characteristics of different transmission tower bodies.
Further, the connecting point of the main rod and the first support rod is in rigid connection.
Further, the connection point of the second support rod and the circular shaft is in rigid connection.
Furthermore, on the same transverse partition surface, the damping parameters and the rigidity parameters of the damping element and the spring element which are connected with the main rod are kept consistent.
Compared with the prior art, the invention has the following beneficial effects:
the large-span power transmission tower shaft with the tuned mass damper function provided by the invention realizes the function of an elevator shaft in the absence of wind and in the presence of low wind and the vibration damping function of the tuned mass damper in the presence of high wind by arranging the vibration damping device, and has the advantages of simplicity and convenience in installation and no increase in the installation space of the damper and the wind load of the damper.
Drawings
FIG. 1 is a schematic diagram of a large span transmission tower wellbore incorporating tuned mass damper functionality according to an embodiment of the present invention;
fig. 2 is an external structural view of the transmission tower body shown in fig. 1;
fig. 3 is a schematic view of the construction of the circular shaft and the elevator and the artificial ladder shown in fig. 1.
In the figure: 1. a power transmission tower main body; 2. a main rod; 3. a circular wellbore; 4. an elevator; 5. manually climbing a ladder; 6. a transverse partition surface; 7. a first stay bar; 8. a second stay bar; 9. a damping element; 10. a spring element; 11. a connecting plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, 2 and 3, the embodiment of the present invention provides a long span power transmission tower wellbore with a tuned mass damper function, which includes: the elevator climbing type power transmission tower comprises a power transmission tower main body 1, four main rods 2 are arranged on the power transmission tower main body 1, a circular shaft 3 is arranged inside the power transmission tower main body 1, the circular shaft 3 is arranged in the center of the power transmission tower main body 1, an elevator 4 is arranged inside the circular shaft 3, an artificial ladder 5 is arranged outside the circular shaft and is convenient for workers to climb for installation, on a cross partition surface 6 of the power transmission tower, the circular shaft 3 and the four main rods 2 are connected through a vibration damping device, the vibration damping device comprises a first support rod 7, a second support rod 8, a damping element 9, a spring element 10 and a connecting plate 11, the damping element 9 and the spring element 10 are arranged between the first support rod 7 and the second support rod 8, the damping element 9 and the spring element 10 are connected in parallel on the two connecting plates 11, one end of the connecting plate 11 is connected with the main rods 2 of the power transmission tower through the first support rod 7, and the other end of the connecting plate is connected with the circular shaft 3 through the second support rod 8; under the effect of strong wind, when the main body 1 of the power transmission tower vibrates, the vibration of the circular shaft 3 of the main rod 2 of the power transmission tower is asynchronous, and the purpose of vibration reduction is achieved through the energy consumption of the damping element 9.
Preferably, the vibration damping device can select one transverse partition surface 6 or a plurality of transverse partition surfaces 6 to be arranged, so that the vibration damping effect is further improved;
preferably, the damping element 9 and the spring element 10 are matched with different damping values and stiffness values according to the self-vibration characteristics of different transmission tower bodies 1, and the adaptation degree is higher;
preferably, the connection point of the main rod 2 and the first stay 7 is a rigid connection.
Preferably, the connection point of the second brace 8 and the circular shaft 3 is a rigid connection.
Preferably, the damping and stiffness parameters of the damping element 9 and the spring element 10 associated with the primary rod 2 are kept identical on the same transversal surface 6.
Preferably, the damping device can be designed to damp and have rigidity according to the first several orders of natural vibration frequency of the transmission tower body 1, so as to reduce the vibration caused by different orders of resonance.
The large-span power transmission tower shaft with the tuned mass damper function provided by the invention realizes the function of an elevator shaft in the absence of wind and in the presence of low wind and the vibration damping function of the tuned mass damper in the presence of high wind by arranging the vibration damping device, and has the advantages of simplicity and convenience in installation and no increase in the installation space of the damper and the wind load of the damper.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A long-span transmission tower shaft with a function of a tuned mass damper is characterized by comprising:
a power transmission tower body (1);
the main rod (2) is provided with a plurality of main rods, and the main rods (2) are respectively arranged on the periphery of the power transmission tower main body (1);
the circular shaft (3) is arranged at the inner center position of the power transmission tower;
the vibration damping devices are arranged between the circular shaft (3) and the main rods (2);
the damping device comprises a first support rod (7), a second support rod (8), a damping element (9), a spring element (10) and two connecting plates (11), wherein the damping element (9) and the spring element (10) are installed between the first support rod (7) and the second support rod (8), the damping element (9) and the spring element (10) are arranged on the two connecting plates (11) in parallel, one end of each connecting plate (11) is connected with the main rod (2) through the first support rod (7), and the other end of each connecting plate is connected with the circular shaft (3) through the second support rod (8).
2. The long span transmission tower shaft with tuned mass damper function as claimed in claim 1 wherein the circular shaft (3) is fitted with an elevator (4) inside and a manual ladder (5) outside.
3. The long-span transmission tower shaft with the function of the tuned mass damper as claimed in claim 1, wherein the tower body of the transmission tower body (1) is provided with a transverse partition (6), and the vibration damping device can be arranged by selecting one transverse partition (6) or a plurality of transverse partitions (6).
4. The long span transmission tower shaft with tuned mass damper function as claimed in claim 1 wherein said damping element (9) and spring element (10) are matched to different damping and stiffness values according to the natural vibration characteristics of different transmission tower bodies (1).
5. The long span transmission tower shaft with tuned mass damper function as claimed in claim 1 wherein the junction of the main mast (2) and the first strut (7) is a rigid connection.
6. The long span transmission tower shaft with tuned mass damper function as claimed in claim 1 wherein the second brace rod (8) is rigidly connected to the circular shaft (3) at its connection point.
7. A long span transmission tower shaft with tuned mass damper function as claimed in claim 3 wherein the damping and stiffness parameters of the damping element (9) and spring element (10) connected to the main rod (2) are kept the same on the same cross section (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864356.XA CN113668932B (en) | 2021-07-29 | 2021-07-29 | Long-span transmission tower shaft with function of tuned mass damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864356.XA CN113668932B (en) | 2021-07-29 | 2021-07-29 | Long-span transmission tower shaft with function of tuned mass damper |
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| Publication Number | Publication Date |
|---|---|
| CN113668932A CN113668932A (en) | 2021-11-19 |
| CN113668932B true CN113668932B (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110864356.XA Active CN113668932B (en) | 2021-07-29 | 2021-07-29 | Long-span transmission tower shaft with function of tuned mass damper |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115110831B (en) * | 2022-08-29 | 2022-12-09 | 国网辽宁省电力有限公司 | Wind-resistant and inclination-resistant high-voltage power transmission line iron tower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008540918A (en) * | 2005-05-13 | 2008-11-20 | リヴィングストン，トレイシー | Structural tower |
| CN204782183U (en) * | 2015-06-03 | 2015-11-18 | 广东电网有限责任公司电力科学研究院 | Transmission tower tabula face with power consumption damping function |
| CN110414025A (en) * | 2018-04-28 | 2019-11-05 | 中国石油天然气集团有限公司 | A kind of frame tower and its design method |
| CN211775667U (en) * | 2019-12-12 | 2020-10-27 | 浙江省送变电工程有限公司 | Power transmission line crossing tower assembly high-altitude construction platform |
| CN211899933U (en) * | 2020-02-17 | 2020-11-10 | 刘占宝 | Tuned damping control device for quality of multi-story and high-rise buildings |
-
2021
- 2021-07-29 CN CN202110864356.XA patent/CN113668932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008540918A (en) * | 2005-05-13 | 2008-11-20 | リヴィングストン，トレイシー | Structural tower |
| CN204782183U (en) * | 2015-06-03 | 2015-11-18 | 广东电网有限责任公司电力科学研究院 | Transmission tower tabula face with power consumption damping function |
| CN110414025A (en) * | 2018-04-28 | 2019-11-05 | 中国石油天然气集团有限公司 | A kind of frame tower and its design method |
| CN211775667U (en) * | 2019-12-12 | 2020-10-27 | 浙江省送变电工程有限公司 | Power transmission line crossing tower assembly high-altitude construction platform |
| CN211899933U (en) * | 2020-02-17 | 2020-11-10 | 刘占宝 | Tuned damping control device for quality of multi-story and high-rise buildings |
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| Publication number | Publication date |
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| CN113668932A (en) | 2021-11-19 |
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