CN113054606A - Transmission tower wind-induced vibration control method and device based on viscous damper - Google Patents
Transmission tower wind-induced vibration control method and device based on viscous damper Download PDFInfo
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- CN113054606A CN113054606A CN202110523496.0A CN202110523496A CN113054606A CN 113054606 A CN113054606 A CN 113054606A CN 202110523496 A CN202110523496 A CN 202110523496A CN 113054606 A CN113054606 A CN 113054606A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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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
- E04H12/24—Cross arms
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The application belongs to the technical field of wind resistance of power transmission towers. The application provides a transmission tower wind-induced vibration control method and device based on a viscous damper, wherein the method comprises the following steps: acquiring a wind load parameter and a residual structure performance parameter of the power transmission tower; carrying out wind resistance evaluation on the power transmission tower according to the wind load parameters and the residual structure performance parameters; determining the deformation weak position of the power transmission tower according to the result of the wind resistance performance evaluation; and arranging viscous dampers at the deformation weak positions of the power transmission tower according to a preset damper arrangement mode. The viscous damper is arranged at the weak position of the power transmission tower, so that the anti-vibration capability of the weak part of the power transmission tower structure is improved, the deformation and the internal force of wind-induced vibration are reduced, the wind resistance of a tower line system is improved, and the failure probability of the tower line system under strong wind is greatly reduced.
Description
Technical Field
The application belongs to the technical field of wind resistance of power transmission towers, and particularly relates to a wind-induced vibration control method and device of a power transmission tower based on a viscous damper.
Background
As an important component of a large complex lifeline system, the safety problem of a power transmission system directly affects the national production and construction and the order of life of people. The damage of the transmission line can cause the breakdown of the power supply system and possibly cause secondary disasters such as fire and the like, thereby causing serious economic loss. The transmission tower line system has the characteristics of high structure flexibility, large ground wire span, strong nonlinearity and the like, and is a wind sensitive structure system. The strong storm is a natural disaster which threatens the power transmission line most, and the damage accident of the power transmission line caused by the strong storm occurs sometimes.
From the last 90 years of century, 500kV power transmission lines gradually become power grid trunk lines in China, and the accumulated tower inverting times and the tower inverting base number of high-voltage power transmission lines also rise along with the increase of line span and tower height. During the period from 1989 to 2005, the more the wind-induced damage of a power transmission tower of more than 500kV in China is 43 bases, which causes serious economic loss. Wind-induced power transmission tower damage is reported in countries such as japan and australia. The transmission tower mainly bears the dead weight and the maximum wind load of the conductor, the ground wire and the tower, so the wind load plays a role in controlling in the design of the linear type self-standing transmission tower.
In order to maintain the overall performance of the structure and distribute shear force and torsion resistance, cross partition surfaces with certain intervals are arranged in the design of the transmission tower. Although the internal force of the transverse separation surface is small in design calculation, the effect of keeping the structural integrity is large, and under the action of wind power, the main material and the inclined material of the power transmission tower can generate large out-of-plane vibration. In severe cases, the transmission tower line system may be damaged, which affects regional power supply and causes great economic loss.
Disclosure of Invention
In view of the above, the present application aims to solve the problem that the main material or the diagonal material of the existing power transmission tower may generate large out-of-plane vibration under the action of a strong wind load, so that the power transmission tower is damaged.
In order to solve the technical problem, a first aspect of the present application provides a method for controlling wind-induced vibration of a transmission tower based on a viscous damper, including the following steps:
acquiring a wind load parameter and a residual structure performance parameter of the power transmission tower;
carrying out wind resistance evaluation on the power transmission tower according to the wind load parameters and the residual structure performance parameters;
determining the deformation weak position of the power transmission tower according to the result of the wind resistance performance evaluation;
and arranging viscous dampers at the deformation weak positions of the power transmission tower according to a preset damper arrangement mode.
Further, the deformation weak point specifically includes:
the weak position of the cross arm and the weak position of the cross diaphragm;
the preset damper arrangement mode specifically comprises:
the tower head cross arm haunch arrangement mode and the tower body cross partition arrangement mode;
the viscous damper arranged at the weak deformation position of the power transmission tower according to the preset damper arrangement mode specifically comprises the following steps:
viscous dampers are arranged at weak positions of cross arms of the power transmission tower according to a tower head cross arm haunch arrangement mode;
viscous dampers are arranged at the weak positions of the transverse partition surfaces of the power transmission tower according to the arrangement mode of the transverse partition surfaces of the tower body.
Further, the tower head cross arm haunched arrangement mode specifically is:
viscous dampers are obliquely arranged between the cross arm and the vertical section of the tower head of the power transmission tower and are respectively connected with the cross arm and the vertical section of the tower head through clamping type connecting pieces.
Further, the tower body horizontal plane arrangement mode specifically includes:
an X-shaped cross arrangement mode, a cross-shaped cross arrangement mode and a diamond arrangement mode;
determining the weak deformation position of the transmission tower according to the result of the wind resistance performance evaluation further comprises:
judging a wind-induced vibration mode of the power transmission tower according to the result of the wind resistance performance evaluation, wherein the wind-induced vibration mode comprises a main material vibration mode and an inclined material vibration mode;
the viscous damper is arranged at the weak position of the transverse parting surface of the power transmission tower according to the arrangement mode of the transverse parting surface of the tower body, and the viscous damper specifically comprises the following components:
if the wind-induced vibration mode of the power transmission tower is the main material vibration mode, arranging a viscous damper at the weak position of the diaphragm surface of the power transmission tower in an X-shaped cross arrangement mode;
and if the wind-induced vibration mode of the power transmission tower is an inclined material vibration mode, arranging viscous dampers at weak positions of a diaphragm surface of the power transmission tower in a cross-shaped crossed arrangement mode and/or a diamond arrangement mode.
Further, the X-shaped cross arrangement specifically includes:
and a viscous damper is horizontally arranged between the opposite main materials of the power transmission tower and is connected with the main materials through a clamping type connecting piece.
Further, the cross-shaped cross arrangement mode specifically comprises:
and a viscous damper is horizontally arranged between the opposite oblique material nodes of the power transmission tower and is connected with the oblique material through a clamping type connecting piece.
Further, the diamond arrangement mode specifically includes:
and a viscous damper is horizontally arranged between adjacent oblique material nodes of the power transmission tower and is connected with the oblique materials through a clamping type connecting piece.
Further, the clamp-on connector specifically includes:
ear plates, bolts, and clamping plates;
the clamping plates comprise a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are clamped on a main material or an inclined material of the power transmission tower through bolts;
one end of the lug plate is fixedly connected with the clamping plate, and the other end of the lug plate is hinged with one end of the viscous damper through a pin shaft.
Further, the result of the wind resistance evaluation specifically includes:
vibration condition and utilization rate of the power transmission tower.
The second aspect of the present application provides a transmission tower wind-induced vibration control device based on a viscous damper, which is characterized in that the device includes a processor and a memory:
the memory is used for storing the computer program and sending the instructions of the computer program to the processor;
and the processor executes the above-mentioned transmission tower wind-induced vibration control method based on the viscous damper according to the instructions of the computer program.
In conclusion, the application provides a wind-induced vibration control method and equipment for a power transmission tower based on a viscous damper, wherein the method comprises the steps of evaluating wind resistance of the power transmission tower by utilizing wind load parameters and residual structural performance parameters of the power transmission tower, judging a weak position of structural deformation of the power transmission tower, and arranging the viscous damper at the weak position of the power transmission tower, so that the vibration resistance of the weak part of the power transmission tower is improved, the deformation and the internal force of wind-induced vibration are reduced, the wind resistance of a tower line system is improved, and the failure probability of the tower line system under strong wind is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a transmission tower wind-induced vibration control method based on a viscous damper according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the overall structure of a transmission tower adopting a transmission tower wind-induced vibration control method based on a viscous damper according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a viscous damper arranged in a tower head cross arm haunch arrangement manner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of viscous dampers arranged in an X-shaped cross arrangement manner according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a viscous damper arranged in a cross-shaped cross arrangement according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of viscous dampers arranged in a diamond arrangement according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a clamp-type connector according to an embodiment of the present invention.
In the drawings: the method comprises the following steps of 1-arranging a tower head cross arm with an armpit, 2-arranging a tower body cross partition surface, 3-viscous dampers, 4-cross arms, 5-arranging a tower head vertical section, 6-main materials, 7-inclined materials, 8-clamping type connecting pieces, 9-lug plates, 10-bolts and 11-clamping plates.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a method for controlling wind-induced vibration of a transmission tower based on a viscous damper, including the following steps:
s101: and acquiring wind load parameters and residual structural performance parameters of the power transmission tower.
It should be noted that the wind load parameter is a local wind load parameter of the power transmission tower to be processed, and the residual structural performance parameters of the power transmission tower specifically include a residual utilization rate of a member of the power transmission tower, a residual stress ratio of a bolt, an amplitude of node vibration, and a vibration standard value.
S102: and evaluating the wind resistance of the power transmission tower according to the wind load parameter and the residual structure performance parameter.
It should be noted that the wind resistance performance evaluation of the power transmission tower is to use a structural analysis method, select appropriate finite element analysis software, input the wind load parameters obtained in the previous step and the remaining structural performance parameters of the power transmission tower, and establish a finite element model of the power transmission tower.
The specific wind resistance evaluation process is as follows:
1) carrying out pulsed power time-course analysis by adopting a finite element method to obtain the vibration condition of the power transmission tower, and obtaining the maximum vibration amplitude A of a calculation unit stage by taking a tower section (or a cross arm or a bracket) as a calculation unit1And maximum standard deviation A2. Further, a vibration measurement index a of the node on the calculation unit is obtained through calculation, and a calculation formula adopted by the vibration measurement index a is as follows:
A＝0.7A1+0.3A2
2) and calculating the residual utilization rate of the rod piece of the power transmission tower and the residual stress ratio of the bolt by adopting professional tower calculation software, and obtaining the average utilization rate of the rod piece of the calculation unit and the average stress ratio of the bolt by taking the tower section (or the cross arm and the bracket) as a calculation unit.
The average utilization rate is calculated as follows:
in the formula, B1For average utilization, Σ liN is the number of rods in the calculation unit.
The average stress ratio is calculated as follows:
in the formula, B2For average stress ratio, ∑ MiTo calculate the sum of the stress ratios of all bolts in a unit, n is the number of bolts in a unit.
Further, the utilization rate of the obtained calculation unit is:
B＝0.8B1+0.2B2
and B, the maximum value is a weak calculation unit, in the weak calculation unit, A is a weak node, and a viscous damper is arranged on the weak node of the weak calculation unit. In practical implementation, the deformation displacement of the rod piece is more than 3% of the maximum size of the rod piece at the deformation position, and the deformation weak position is regarded as the deformation displacement.
S103: and determining the deformation weak position of the power transmission tower according to the result of the wind resistance performance evaluation.
It should be noted that the weak deformation position of the transmission tower is determined according to the result of the wind resistance performance evaluation, that is, the weak deformation position of the transmission tower is determined according to the vibration condition and the utilization rate of the transmission tower. The vibration condition and the utilization rate of the power transmission tower are determined by specifically adopting the vibration measurement index A provided in the previous step and the utilization rate B of a calculation unit.
S104: and arranging the viscous damper 3 at the deformation weak position of the power transmission tower according to a preset damper arrangement mode.
It should be noted that the viscous damper 3 is a passive speed type dissipative vibration damping device using a viscous material as a damping medium. Since the cross arm 4 of the tower head of the power transmission tower and the main material 6 and the inclined material 7 of the tower body vibrate under the action of wind load, in order to absorb and consume wind-induced vibration energy to the maximum extent, the viscous damper 3 needs to be arranged at the weak position of the cross arm and the weak position of deformation of the cross diaphragm.
Referring to fig. 2, different viscous dampers 3 may generate different energy consumption and vibration reduction effects in different arrangement modes, and considering the wind vibration control effect and the transformation cost, a tower head cross arm 4 haunched arrangement mode 1 and a tower body cross wall arrangement mode 2 may be respectively adopted for the weak position of the cross arm 4 and the weak position of the deformation, that is, the viscous dampers 3 are arranged at the weak position of the cross arm 4 of the power transmission tower according to the tower head cross arm 4 haunched arrangement mode 1, and the viscous dampers 3 are arranged at the weak position of the cross wall of the power transmission tower according to the tower body cross wall arrangement mode 2.
Referring to fig. 3, the tower head cross arm 4 haunch arrangement mode 1 is intended to control the up-and-down swing of the cross arm 4 caused by the wind vibration of the conductor, thereby suppressing the wind-induced vibration of the whole tower line system. The specific arrangement method is that the viscous damper 3 is obliquely arranged between the cross arm 4 and the vertical section of the tower body, and when the cross arm 4 swings up and down due to the swinging of the lead, the viscous damper 3 is pulled to axially stretch. The viscous damper 3 provides extra damping force to consume wind-induced vibration energy due to the action of the viscous material, and reduces the wind vibration energy transmitted to the tower body, so that the vibration of the whole tower line system is controlled.
The tower body transverse bulkhead arrangement mode 2 aims to control the situation that when a tower line system bears wind load, the whole tower body is bent, sheared and twisted to deform due to vibration, and the position of a main material 6 or an inclined material 7 in a transverse bulkhead changes. The specific arrangement method is that the viscous damper 3 is installed in the transverse partition of the tower body, the two ends of the damper are connected with the main material 6 or the inclined material 7 of the tower body, when the tower body is subjected to bending, shearing and twisting combined deformation, the shape of the transverse partition is changed and is not a standard square or is not a contraction deformation due to structure twisting, the deformation drives the damper to axially stretch and retract, damping force consumption energy is generated, further the deformation of the transverse partition of the tower body is restrained, the out-of-plane deformation of the main material 6 and the inclined material 7 is reduced, and the risk of component damage is reduced.
According to the wind-induced vibration control method of the power transmission tower, the weak position of the structural deformation of the power transmission tower is judged by adopting a finite element analysis method for the power transmission tower, and then the viscous dampers 3 are arranged at the weak position of the cross arm 4 and the weak position of the cross diaphragm of the power transmission tower, so that the vibration of the cross arm 4 and the vibration of the main material 6 and the inclined material 7 in the power transmission tower are respectively controlled. By adopting the control method, the wind vibration energy on the power transmission tower can be effectively consumed, the wind-induced vibration of the power transmission tower structure is inhibited, and the risk of wind-induced damage is reduced.
The above is a detailed description of an embodiment of the transmission tower wind-induced vibration control method based on the viscous damper 3 provided by the present application, and the following is a detailed description of another embodiment of the transmission tower wind-induced vibration control method based on the viscous damper 3 provided by the present application.
The embodiment of the application provides a transmission tower wind-induced vibration control method based on a viscous damper, which comprises the following steps:
s201: and acquiring wind load parameters and residual structural performance parameters of the power transmission tower.
It should be noted that this step is the same as the specific implementation of step S101 in the previous embodiment, and is not described herein again.
S202: and evaluating the wind resistance of the power transmission tower according to the wind load parameter and the residual structure performance parameter.
It should be noted that this step is the same as the specific implementation of step S102 in the previous embodiment, and is not described herein again.
S203: and determining the deformation weak position of the power transmission tower according to the result of the wind resistance performance evaluation, and judging the wind-induced vibration mode of the power transmission tower, wherein the wind-induced vibration mode comprises a main material 6 vibration mode and an inclined material 7 vibration mode.
It should be noted that the main material vibration mode and the diagonal material vibration mode are mainly determined according to the main vibration mode of the power transmission tower, that is, if the power transmission tower is the main material 6 vibration mode in which the main material 6 mainly vibrates, the diagonal material 7 may also vibrate, and similarly, the diagonal material vibration mode of the power transmission tower may also have the main material 6 vibrate.
S204: arranging a viscous damper 3 at the weak position of a cross arm 4 of the power transmission tower according to a tower head cross arm 4 haunched arrangement mode 1; and arranging viscous dampers at the weak positions of the transverse parting surfaces of the power transmission tower according to the tower body transverse parting surface arrangement mode 2.
It can be understood that, for the wind-induced vibration processing mode of the weak position of the cross arm of the transmission tower, the tower head cross arm haunching arrangement mode 1 provided in step S104 in the previous embodiment may be adopted.
In addition, referring to fig. 4-6, an X-shaped cross arrangement manner, a cross-shaped cross arrangement manner, and a diamond arrangement manner are further proposed for the tower body diaphragm arrangement manner 2 in the present embodiment.
And when the wind-induced vibration mode of the power transmission tower is the main material vibration mode, arranging the viscous damper 3 at the weak deformation position of the power transmission tower in an X-shaped cross arrangement mode. The X-shaped cross arrangement mode is specifically that the viscous damper 3 is installed along the diagonal line in the transverse partition surface of the tower body of the power transmission tower, and two ends of the damper are respectively connected with the two opposite main materials 6. Since the cross-sectional shape of the tower is normally square, the viscous damper 3 installed along the diagonal line is formed into an X-shape. When the main material 6 is subjected to vibration deformation, the viscous dampers 3 arranged in a crossed mode can provide damping force to consume vibration energy, and deformation of the transverse partition surface is restrained.
And if the wind-induced vibration mode of the power transmission tower is the vibration mode of the inclined material 7, arranging the viscous dampers 3 at the deformation weak positions of the power transmission tower in a cross-shaped crossed arrangement mode and/or a diamond arrangement mode. The cross-shaped cross arrangement is characterized in that the viscous damper 3 is horizontally arranged between the nodes of the opposite oblique materials 7 of the power transmission tower, and the two ends of the damper are respectively connected with the nodes of the two opposite oblique materials 7, so that the damper forms a cross shape in a transverse partition. Because the damper is perpendicular to the plane of the inclined material 7 and the damper is directly connected with the inclined material 7, the vibration deformation of the inclined material 7 can be effectively inhibited under the action of wind load. The rhombic arrangement is specifically that the viscous damper 3 is horizontally arranged between the nodes of the adjacent oblique materials 7 of the power transmission tower, and the two ends of the damper are respectively connected with the nodes of the adjacent oblique materials 7, so that the damper forms a rhombic shape in a transverse partition, and is mainly used for inhibiting the vibration deformation of the oblique materials 7.
In addition, referring to fig. 7, in order to avoid structural damage caused by welding or drilling the original structure and reduce the design and construction cost, the two ends of the damper are not welded or bolted, but are connected by a clamping type connecting piece 8. Connecting piece one end is connected through otic placode 9 and is installed in the attenuator both ends, realize and the articulated connection between the attenuator, and the other end passes through bolt 10 and splint 11 and presss from both sides tightly on main material 6 or oblique material 7, has avoided the destructive construction to the original structure, and design and simple installation are simple and convenient simultaneously, are applicable to batchized transmission tower and transform the engineering.
According to the structure of the transformation position, the viscous damper 3 with the corresponding model is selected, and the connecting piece with the corresponding size is designed, mainly the size of the clamping plate 11 of the connecting piece is designed, so that the good fit between the connecting piece and the original structure is ensured. During installation construction, the connecting piece is firstly fastened at the installation position, and the angle is adjusted to ensure accurate installation of the subsequent damper. And then the two ends of the viscous damper 3 are hinged with the lug plates 9 of the connecting piece through pin shafts. In the design and installation process, in order to avoid the situation that the damper is not installed in place due to temperature change, the installation temperature is considered in the design process, and the construction temperature is controlled in the construction process. Meanwhile, wind-induced vibration is a long-term vibration load, certain anti-loosening treatment is carried out on the bolt 10 when the connecting piece is installed, and the phenomenon that the bolt 10 loosens to cause installation failure of the damper under the action of wind-induced vibration is avoided.
In the embodiment, when the damper is arranged at the weak position of the power transmission tower, the influence of the wind-induced vibration mode on the power transmission tower is further considered, the X-shaped cross arrangement mode is selected for the main material 6 vibration mode, so that the vibration deformation of the main material 6 can be effectively inhibited, and the cross-shaped cross arrangement mode and/or the rhombic arrangement mode is selected for the diagonal material 7 vibration mode, so that the vibration deformation of the diagonal material 7 can be effectively inhibited. Through the three transverse partition surface arrangement modes, the torsional deformation of the transverse partition surfaces can be effectively controlled, the out-of-plane deformation of the main material 6 and the oblique material 7 is reduced, and the risk of component damage is reduced.
The above is a detailed description of an embodiment of the transmission tower wind-induced vibration control method based on the viscous damper 3 provided by the present application, and the following is a detailed description of an embodiment of the transmission tower wind-induced vibration control method based on the viscous damper 3 provided by the present application.
A viscous damper-based wind-induced vibration control method and device for a power transmission tower are characterized by comprising a processor and a memory, wherein the processor comprises the following steps:
the memory is used for storing the computer program and sending the instructions of the computer program to the processor;
the processor executes a viscous damper-based transmission tower wind-induced vibration control method as the above-described embodiment according to instructions of the computer program.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A transmission tower wind-induced vibration control method based on a viscous damper is characterized by comprising the following steps:
acquiring a wind load parameter and a residual structure performance parameter of the power transmission tower;
carrying out wind resistance performance evaluation on the power transmission tower according to the wind load parameter and the residual structure performance parameter;
determining the deformation weak position of the power transmission tower according to the result of the wind resistance performance evaluation;
and arranging viscous dampers at the deformation weak positions of the power transmission tower according to a preset damper arrangement mode.
2. The method for controlling the wind-induced vibration of the transmission tower based on the viscous damper according to claim 1, wherein the weak deformation position specifically comprises:
the weak position of the cross arm and the weak position of the cross diaphragm;
the preset damper arrangement mode specifically comprises:
the tower head cross arm haunch arrangement mode and the tower body cross partition arrangement mode;
the viscous damper arranged at the weak deformation position of the power transmission tower according to a preset damper arrangement mode specifically comprises the following steps:
viscous dampers are arranged at the weak positions of the cross arms of the power transmission tower according to the arrangement mode of haunching the cross arms at the tower head;
and arranging viscous dampers at the weak positions of the transverse parting surfaces of the power transmission tower according to the arrangement mode of the transverse parting surfaces of the tower body.
3. The method for controlling the wind-induced vibration of the transmission tower based on the viscous damper according to claim 2, wherein the arrangement mode of the tower head cross arm haunched is as follows:
viscous dampers are obliquely arranged between the cross arm and the vertical section of the tower head of the power transmission tower, and the viscous dampers are respectively connected with the cross arm and the vertical section of the tower head through clamping type connecting pieces.
4. The viscous damper-based wind-induced vibration control method for the transmission tower according to claim 2, wherein the arrangement mode of the tower body cross section specifically comprises the following steps:
an X-shaped cross arrangement mode, a cross-shaped cross arrangement mode and a diamond arrangement mode;
the determining the weak deformation position of the transmission tower according to the result of the wind resistance performance evaluation further comprises:
judging a wind-induced vibration mode of the power transmission tower according to the result of the wind resistance performance evaluation, wherein the wind-induced vibration mode comprises a main material vibration mode and an inclined material vibration mode;
the viscous damper arranged at the weak position of the transverse bulkhead of the power transmission tower according to the tower body transverse bulkhead arrangement mode specifically comprises the following steps:
if the wind-induced vibration mode of the power transmission tower is a main material vibration mode, arranging a viscous damper at the weak position of the diaphragm surface of the power transmission tower in an X-shaped cross arrangement mode;
and if the wind-induced vibration mode of the power transmission tower is an inclined material vibration mode, arranging viscous dampers at weak positions of the diaphragm surface of the power transmission tower according to the cross-shaped cross arrangement mode and/or the rhombic arrangement mode.
5. The method for controlling the wind-induced vibration of the transmission tower based on the viscous damper according to claim 4, wherein the X-shaped cross arrangement mode is specifically as follows:
and a viscous damper is horizontally arranged between the opposite main materials of the transmission tower and is connected with the main materials through clamping type connecting pieces.
6. The viscous damper-based wind-induced vibration control method for the transmission tower according to claim 4, wherein the cross-shaped cross arrangement mode is specifically as follows:
and a viscous damper is horizontally arranged between the opposite oblique material nodes of the transmission tower and is connected with the oblique material through a clamping type connecting piece.
7. The method for controlling the wind-induced vibration of the transmission tower based on the viscous damper according to claim 4, wherein the diamond arrangement mode is specifically as follows:
and a viscous damper is horizontally arranged between adjacent diagonal material nodes of the power transmission tower and is connected with the diagonal materials through clamping type connecting pieces.
8. The viscous damper-based wind-induced vibration control method for the transmission tower according to any one of claims 3 and 5 to 7, wherein the clamping type connecting piece specifically comprises:
ear plates, bolts, and clamping plates;
the clamping plates comprise a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are clamped on the main material or the inclined material of the power transmission tower through the bolts;
one end of the ear plate is fixedly connected with the clamping plate, and the other end of the ear plate is hinged with one end of the viscous damper through a pin shaft.
9. The viscous damper-based wind-induced vibration control method for the transmission tower according to claim 1, wherein the result of the wind resistance performance evaluation specifically comprises:
vibration condition and utilization rate of the power transmission tower.
10. A viscous damper-based transmission tower wind induced vibration control apparatus, the apparatus comprising a processor and a memory:
the memory is used for storing a computer program and sending instructions of the computer program to the processor;
the processor executes a viscous damper-based transmission tower wind-induced vibration control method according to any one of claims 1 to 9 according to instructions of the computer program.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115370185A (en) * | 2022-09-30 | 2022-11-22 | 山东大学 | Local and whole buckling restrained reinforcement of angle steel and power consumption device |
| CN116150567A (en) * | 2023-04-21 | 2023-05-23 | 温州电力建设有限公司 | Optimization method of inhaul cable-lever rotation inertial-volume damper system in power transmission tower body |
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| CN114893053A (en) * | 2022-06-28 | 2022-08-12 | 广东电网有限责任公司 | Be applied to aluminum alloy power transmission tower in mountain area |
| CN114893053B (en) * | 2022-06-28 | 2023-12-29 | 广东电网有限责任公司 | Be applied to aluminum alloy transmission tower in mountain area |
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| CN115144173B (en) * | 2022-09-05 | 2022-11-25 | 济南百顿机械设备有限公司 | Power transmission tower monitoring method and device based on intelligent piezoelectric damper |
| CN115370185A (en) * | 2022-09-30 | 2022-11-22 | 山东大学 | Local and whole buckling restrained reinforcement of angle steel and power consumption device |
| CN115370185B (en) * | 2022-09-30 | 2023-08-29 | 山东大学 | Local and whole buckling-restrained reinforcing and energy dissipation device for angle steel |
| CN116150567A (en) * | 2023-04-21 | 2023-05-23 | 温州电力建设有限公司 | Optimization method of inhaul cable-lever rotation inertial-volume damper system in power transmission tower body |
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