CN110670937B - Interval reinforcing device and method for service power transmission tower - Google Patents
Interval reinforcing device and method for service power transmission tower Download PDFInfo
- Publication number
- CN110670937B CN110670937B CN201910993574.6A CN201910993574A CN110670937B CN 110670937 B CN110670937 B CN 110670937B CN 201910993574 A CN201910993574 A CN 201910993574A CN 110670937 B CN110670937 B CN 110670937B
- Authority
- CN
- China
- Prior art keywords
- sub
- cylindrical
- component
- rectangular frame
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- 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
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
Abstract
The invention discloses a device and a method for strengthening a service power transmission tower interval, wherein the device comprises three sets of different components; the first kit of parts comprises a first sub-part and a second sub-part; the first sub-component and the second sub-component respectively comprise a cylindrical clamp, and the first sub-component and the second sub-component are connected together through a bolt sleeve and a threaded rod to form a first rectangular frame reinforcing structure; the second set of members comprises a third subsection, the third subsection comprises two cylindrical clamps, the two cylindrical clamps are respectively connected to the middle part of the side length of the first rectangular frame reinforcing structure, and the four third subsections form a second rectangular frame reinforcing structure positioned in the first rectangular frame reinforcing structure; the third set of components includes a cross bar and a fourth section; one end of each fourth component is connected with the internal thread of the cross rod; the other ends of the four fourth components are cylindrical clamps which are connected to the middle part of the side length of the second rectangular frame structure.
Description
Technical Field
The invention relates to the technical field of power transmission equipment, in particular to a novel cross partition device capable of being freely installed and detached and a method, which are mainly applied to reinforcement and reconstruction of a power transmission tower or a communication tower.
Background
The transmission line is used as a lifeline project, and the safety and stability of the transmission line are related to the life and property safety of people. With the high-speed growth of national economy in China, the investment of the nation on a power grid is increased day by day, the power construction is upgraded and updated continuously, and a large number of extra-high voltage, large-capacity and other complex power transmission lines are built. As an important component of a power transmission network, the reliability of a power transmission tower is related to the safety degree of the whole power grid. The development process of the power transmission iron tower in China can be mainly divided into two stages, the requirement on the bearing capacity of the iron tower is not high before 2005, the power transmission iron tower in China mainly takes an angle steel tower built by Q235 and Q345 steel as a main part, and a large part of the power transmission iron tower enters an overdue service period aiming at the condition that the design service life of the power transmission iron tower is only 30 years. After 2005, with the increasing demand for electricity and the increasing complexity of transmission lines, the load bearing capacity of transmission towers is increasing, resulting in higher and higher requirements for the bearing capacity of the towers. At present, many transmission towers are designed and constructed based on the current technical standards, functional requirements and service performance. After the material is put into use for years, under new use conditions, the load or force transmission path and the like are changed, or under the action of an external environment, inevitable damage and defects occur, so that the macroscopic mechanical property is deteriorated, and engineering accidents occur and the material is buried and maliciously. Therefore, the reinforcing and reinforcing reconstruction of the existing iron tower is urgent.
The power transmission tower designed according to the existing power transmission line tower design specifications generally has the problem that the cross partition surfaces of the tower body are less in arrangement. Under the condition, the local vibration mode of the iron tower is very serious, and under the action of adverse loads such as earthquake, wind and the like, if the iron tower is excited to have the local vibration mode, local damage of a certain internode is possibly caused, further successive failure of adjacent rod pieces is caused, finally, the whole collapse of the power transmission iron tower is caused, and the life and property safety of human beings is seriously threatened.
The power transmission iron tower is a special steel structure, the structural form of the power transmission iron tower is complex and special, and the normal operation of a power transmission line is often required during reinforcement, which brings more limitations to the reinforcement mode and method, so that the research on reinforcement of the power transmission iron tower is a difficult point and a hot spot in steel structure reinforcement.
Currently, two of the most common methods for power transmission tower reinforcement are: firstly, a force transmission path of a structure is adjusted by adopting a method of changing a calculation graph so as to carry out reinforcement; and secondly, reinforcing the main material of the power transmission iron tower by adopting a section enlarging method. The invention finds out from experience and actual construction process that the stress of the iron tower structure is very complex, and the influence on the stress of the iron tower and the force transmission of a component is large when the iron tower is reinforced by adopting a method of changing a calculation graph, so that a lot of uncertainty can be caused, and therefore, the method is not particularly widely applied to the actual iron tower reinforcement. The method for increasing the cross section is generally only suitable for reinforcing and transforming local rod pieces of the power transmission iron tower, and cannot realize the integral reinforcement of weak sections of the power transmission iron tower.
Disclosure of Invention
The invention aims to provide a device and a method for strengthening a service power transmission tower interval, aiming at reducing the influence of local vibration mode of a power transmission tower under the action of adverse load and enhancing the overall stability of a weak section. The device is connected with main material components at the same height position of the power transmission tower body through three sets of independent reinforcing components, and a set of new cross partitions capable of being freely installed and disassembled are assembled and combined, so that the overall stability of a weak joint is enhanced, the influence of local vibration modes is eliminated, and a good reinforcing effect is achieved on the power transmission tower.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a service power transmission tower interval reinforcing device, which comprises three sets of different components:
the first set of components comprises two first sub-parts of identical structure and two second sub-parts of identical structure; the first sub-component and the second sub-component respectively comprise a cylindrical clamp, and the first sub-component and the second sub-component are connected together through a bolt sleeve and a threaded rod to form a first rectangular frame reinforcing structure;
the second set of members comprises four third sub-parts with the same structure, each third sub-part comprises two cylindrical clamps, the two cylindrical clamps are respectively connected to the middle part of the side length of the first rectangular frame reinforcing structure, and the four third sub-parts form a second rectangular frame reinforcing structure positioned in the first rectangular frame reinforcing structure;
the third set of components comprises a cross bar and four fourth parts with the same structure; one end of each fourth component is connected with the internal thread of the cross rod; the other ends of the four fourth components are cylindrical clamps, and the cylindrical clamps are connected with the middle part of the side length of the second rectangular frame reinforcing structure; the third set of members is combined with the second set of members to form a reinforcement member in the form of a "field".
The three sets of reinforcing members are sequentially assembled and combined in sequence and fixedly connected with main materials at the same horizontal height position of the power transmission iron tower to be reinforced, so that a reinforcing crossroom with unchanged geometry is formed.
As a further technical scheme, the first sub-component comprises a first cylindrical clamp, two bolt sleeves are arranged on the first cylindrical clamp, the two bolt sleeves are perpendicular to each other, a cylindrical opening is arranged at the tail end of each bolt sleeve, and threads are arranged on the inner wall of each cylindrical opening; the second sub-component comprises a second cylindrical clamp, the second cylindrical clamp is connected with two solid steel pipes through two universal spherical hinges, the two solid steel pipes are mutually vertical, and the threaded rod is fixed at the tail ends of the solid steel pipes; the threaded rod is matched with the internal thread of the bolt sleeve; and connecting the adjacent first sub-component and the second sub-component to form a first rectangular frame reinforcing structure.
As a further technical scheme, the third sub-component comprises a third cylindrical clamp and a fourth cylindrical clamp, the third cylindrical clamp is fixedly connected with one end of a bent bolt sleeve, the other end of the bolt sleeve is provided with a cylindrical opening, and the inner wall of the cylindrical opening is provided with threads; the fourth cylinder clamp is connected with a solid steel pipe through a rotating bearing, and the threaded rod is fixed at the tail end of the solid steel pipe; the threaded rod is matched with the internal thread of the bolt sleeve.
As a further technical scheme, the fourth sub-assembly comprises a fifth cylindrical clamp, the bottom of the fifth cylindrical clamp is connected with a threaded rod through a rotating bearing, and free rotation can be realized; the cross rod inner wall screw thread is matched with four threaded rods.
As a further technical scheme, the first cylindrical clamp, the second cylindrical clamp, the third cylindrical clamp and the fourth cylindrical clamp have the same structure and respectively comprise two semi-circular cylinders, one sides of the two semi-circular cylinders are connected through bolts, and the other sides of the two semi-circular cylinders are connected through connecting blocks; so that free opening and closing of the cylinder jig can be achieved.
As a further technical scheme, the cylindrical clamp is made of the same steel material as the power transmission iron tower to be reinforced, and the surface of the cylindrical clamp is coated with epoxy resin anticorrosive paint for anticorrosive treatment.
As a further technical scheme, the solid steel pipe is made of the same steel material as the power transmission tower to be reinforced, and the surface of the solid steel pipe is coated with epoxy resin anticorrosive paint for anticorrosive treatment.
As a further technical scheme, the cylindrical fixture is connected with the solid steel pipe through a universal ball joint or a rotating bearing, free rotation can be achieved, and therefore fixed connection among all parts is facilitated.
In a second aspect, the invention provides a method for a serving power transmission tower interval reinforcing device, which specifically comprises the following steps:
for the power transmission iron tower needing to be reinforced, finite element modeling is carried out on the power transmission iron tower to be reinforced, the appearance position of a local vibration mode is found out through modal analysis, and the vulnerability of the structure is analyzed to find out a weak region;
then simulating the power characteristics of the power transmission tower after partitions are added at different heights of the weak area, and finding out the optimal reinforcing position;
according to the result of finite element simulation, at the optimal reinforcing position, firstly connecting the cylindrical clamps of each sub-component in the first set of component with the main materials at the same height position along the tower body, and then adjusting the length of the threaded rods screwed into the bolt sleeves in the sub-components according to the distance between two adjacent main materials so as to form a first rectangular frame reinforcing structure in a combined manner;
connecting the cylindrical fixture of each part in the second set of members to the middle part of each side of the first rectangular frame reinforcing structure, and then adjusting the length of the threaded rod screwed into the bolt sleeve according to the distance between the adjacent parts in the first set of members, thereby forming a second rectangular frame reinforcing structure;
and respectively connecting four cylindrical fixtures in a third set of members to the middle part of each side length in the second rectangular frame reinforcing structure, screwing bolts, adjusting the length of the threaded rod screwed into the cross stress application rod according to the distance between two opposite side parts in the second set of members, and screwing to ensure that the threaded rod is firmly connected with the nuts, so that the third set of reinforcing members are formed and form a combined reinforcing member in a shape like a Chinese character 'tian' with the second rectangular frame reinforcing structure.
Finally, three sets of reinforcing members are spliced and combined, and a new reinforcing cross partition is formed in the weak area of the power transmission tower to be reinforced.
The working principle of the invention is as follows:
firstly, finite element modeling is carried out on a power transmission iron tower to be reinforced, the appearance position of a local vibration mode is found out through modal analysis, and the vulnerability of the structure is analyzed to find out a weak region. And then simulating the dynamic characteristics of the power transmission tower after transverse partitions are added at different heights in the weak area through finite element software, and finding out the optimal reinforcing position. And (3) according to the result of the finite element simulation, at the optimal reinforcement position, combining and connecting three sets of independent components according to the assembly sequence and connecting the three sets of independent components with main materials at the same height position of the tower body, thereby forming a new reinforcement crossroom. According to the invention, the overall stability of the weak joints can be enhanced and the influence of local vibration mode can be eliminated by increasing the number of cross partitions of the power transmission tower.
The invention has the beneficial effects that:
(1) the solid steel pipe is adopted as a main supporting structure of the reinforcing device, so that the stability is strong, and the installation is convenient. The reinforcing beam formed by combining and assembling the three sets of reinforcing members has good stability, the overall stability of a weak area can be obviously improved, the influence of local vibration mode can be eliminated, the wind resistance, the earthquake resistance and the ice resistance bearing capacity of the power transmission tower are further improved, and the overall stability of the structure is enhanced;
(2) the three sets of reinforcing members are combined and connected according to the assembling sequence and are connected with the main material at the same height position of the tower body, so that a cross partition system with unchanged geometry is formed, a weak area and a local vibration mode area of the power transmission tower are stably and effectively supported, and the stability of the whole structure is further improved;
(3) the self-connection of the reinforcing device and the connection with the main material component of the power transmission tower are connected by adopting a clamp, the clamp is cylindrical, the reinforcing device can be applied to both a steel pipe tower and an angle steel tower, any punching, welding and dismounting are not needed, the mounting and dismounting are simple, and the reliability is high;
(4) the invention has simple structure, high flexibility and convenient replacement, can effectively improve the overall stability of the power transmission tower, is suitable for the overall reinforcement of the angle steel tower and the steel pipe tower, basically meets the reinforcement and transformation of the existing weak section of the operating power transmission tower, and has good social benefit and economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic diagram of a first set of components a of an in-service inter-tower reinforcing apparatus provided by the present invention;
fig. 2 is a schematic diagram of a second set of members B of an in-service inter-tower reinforcement provided by the present invention;
fig. 3 is a schematic diagram of a third set of components C of the inter-block reinforcement for a transmission tower in service according to the present invention;
fig. 4 is a schematic diagram of the third set of members C of the inter-service power transmission tower interval reinforcing device provided by the invention after the threaded rods are screwed out;
fig. 5 is a partial schematic view of a cylindrical fixture and a solid steel pipe of the inter-interval reinforcing device and method for a service power transmission tower according to the present invention, which are connected through a rotating bearing;
fig. 6 is a partial schematic view of a cylindrical fixture and a solid steel pipe of the inter-interval reinforcing device and method for a service power transmission tower according to the present invention, which are connected by a universal ball joint;
fig. 7 is a schematic overall view of three sets of members A, B, C assembled and combined in service power transmission tower interval reinforcement device provided by the invention.
In the figure: 1 bolt, 2 cylinder formula anchor clamps, 3 solid steel pipes, 4 threaded rods, 5 bolt sleeves, 6 connecting blocks, 7 universal ball pivot, 8 rolling bearing, 9 cross bars, 10 nuts.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, combinations, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The following describes embodiments of the present invention in detail with reference to the drawings.
The invention provides a service power transmission tower interval reinforcing device which comprises three sets of independent members, a first set of member A, a second set of member B and a third set of member C. Each set of component comprises a plurality of sub-components, and each sub-component consists of a cylindrical clamp and a solid steel pipe; one end of the cylindrical clamp can be fixedly connected together through a bolt, and the other end of the cylindrical clamp is connected with the solid steel pipe through a universal ball joint or a rotating bearing. The solid steel pipes are divided into two types, and the two types of solid steel pipes can be connected with the threaded rod in a matched mode through the bolt sleeve.
Specifically, the first set of component a comprises two first sub-parts with the same structure and two second sub-parts with the same structure; the first sub-component and the second sub-component are connected together through a bolt sleeve and a threaded rod to form a first rectangular frame reinforcing structure; the second set of member B comprises four third sub-parts with the same structure, two ends of each third sub-part are respectively connected to the central position of a connecting rod formed by a bolt sleeve and a threaded rod in the first rectangular frame structure, the four third sub-parts form a second rectangular frame reinforcing structure positioned in the first rectangular frame reinforcing structure, and the third set of member C comprises a cross rod and four same fourth sub-parts; one end of each fourth component is matched and connected with the internal thread of the cross rod; the other ends of the four fourth members are connected to the second rectangular frame reinforcing structure by cylindrical clamps at the ends.
In this embodiment, as shown in fig. 1, the component a includes four sub-components, two of the sub-components have the same structure, and the other two sub-components have the same structure; in fig. 1, the two sub-components at the upper left corner and the lower right corner have the same structure; the structures of the two sub-components at the left lower corner and the right upper corner are the same;
the structure of the two sub-components positioned at the upper left corner and the lower right corner comprises a cylindrical clamp 2, the cylindrical clamp 2 consists of two groups of semi-circular cylinders, the top parts of the cylindrical clamp 2 can be connected through a bolt 1, and the lower parts of the cylindrical clamp are connected through a connecting block 6 so as to realize free opening and closing; two bolt sleeves 5 are arranged on the cylindrical clamp 2, the two bolt sleeves 5 are perpendicular to each other, a cylindrical opening is arranged at the tail end of each bolt sleeve 5, and threads are arranged on the inner wall of each cylindrical opening.
The structure of the two sub-components positioned at the left lower corner and the right upper corner comprises a cylindrical clamp 2, the cylindrical clamp 2 consists of two groups of semi-circular cylinders, the top parts of the cylindrical clamp 2 can be connected through a bolt 1, and the lower parts of the cylindrical clamp are connected through a connecting block 6 so as to realize free opening and closing; the cylindrical fixture 2 is connected with the two solid steel pipes 3 through two universal spherical hinges 7, and the two solid steel pipes 3 are vertical to each other; the two solid steel pipes 3 can freely rotate, and the threaded rod 4 is fixed at the tail ends of the solid steel pipes 3; the threaded rod 4 is matched with the internal thread of the bolt sleeve 5;
the four sub-assemblies, when combined, may form a rectangular frame structure, preferably a square reinforcement structure.
In this embodiment, as shown in fig. 2, the second set of members B includes four third parts having the same structure, each third part includes two parts, one of the parts is shown as the upper part of fig. 2 and includes a cylindrical fixture 2, the cylindrical fixture 2 is composed of two groups of semi-circular cylinders, the top of the cylindrical fixture 2 can be connected by a bolt 1, and the lower parts are connected by a connecting block 6 to realize free opening and closing; the cylindrical clamp 2 is provided with a bolt sleeve 5, the tail end of the bolt sleeve 5 is provided with a cylindrical opening, and the inner wall of the cylindrical opening is provided with threads; the bolt sleeve 5 is a bent piece bent at 135 degrees.
The other part is shown as the part at the lower part of fig. 2 and comprises a cylindrical clamp 2, the cylindrical clamp 2 consists of two groups of semi-circular cylinders, the top parts of the cylindrical clamps 2 can be connected through bolts 1, and the lower parts of the cylindrical clamps are connected through connecting blocks 6 so as to realize free opening and closing; the cylindrical fixture 2 is connected with a solid steel pipe 3, and the threaded rod 4 is fixed at the tail end of the solid steel pipe 3; the threaded rod 4 is matched with the internal thread of the bolt sleeve 5, and the threaded rod 4 is a bending piece bent by 135 degrees.
Two cylindrical clamps 2 of four third sub-parts with the same structure are respectively connected to the middle position of the side length of the rectangular reinforcing structure formed by the component A.
In this embodiment, as shown in fig. 3 and 4, the third component C includes five sub-components, wherein the four sub-components have the same structure, and include a cylindrical fixture 2, the cylindrical fixture 2 is composed of two sets of semi-circular cylinders, the top of the cylindrical fixture 2 can be connected by a bolt 1, and the lower part of the cylindrical fixture 2 is connected by a connecting block 6 to realize free opening and closing; the bottom of the cylindrical clamp 2 is connected with the threaded rod 4 through the rotating bearing 8, and free rotation can be achieved. The fifth sub-component is a cross rod 9, the inner wall of the cross rod 9 is provided with threads, nuts 10 are welded at four ends of the cross rod 9, four threaded rods 4 are matched with four rod bodies of the stress application rod 9, and the threaded rods 4 can be screwed with the nuts 10.
In the first set of component a, the four divided cylindrical clamps 2 are respectively connected with the main materials at the same height position along the tower body, and then the length of the bolt rod 4 screwed into the bolt sleeve 5 is adjusted according to the distance between two adjacent main materials.
And in the second set of component B, the cylindrical clamps 2 of the four third sub-components are respectively connected to the middle part of the component A after being assembled and combined to form a square structure with side length, and then the length of the threaded rod 4 screwed into the bolt sleeve 5 is adjusted according to the distance between two adjacent sub-components in the component A.
In the third set of component C, four cylindrical clamps 2 are respectively connected to the middle positions of the sub-components in the four components B, the length of the threaded rod 4 screwed into the cross rod 9 is adjusted according to the distance between the two opposite side sub-components in the components B, and finally the threaded rod 4 and the nut 10 are screwed tightly by applying force.
In the component A, B, C, the cylindrical clamp 2 is connected with the solid steel tube 3 and the cross rod 9 through the rotating bearing 8 or the universal ball joint 7, so that the cylindrical clamp 2 can freely rotate independently of the solid steel tube 3 and the cross rod 9, and the threaded rod 4 can be conveniently screwed.
In the component A, B, C, the cylindrical clamp 2 is composed of two groups of semi-circular cylinders, and the size is determined by the size of the main material and the size of each sub-component at the weak section of the power transmission tower to be reinforced. The top of the cylindrical clamp 2 is connected through the bolt 1, and the lower part of the cylindrical clamp is connected through the connecting block 6, so that the cylindrical clamp can be freely opened and closed, and is conveniently and fixedly connected with a main material and each sub-component of the power transmission tower.
For the power transmission iron tower needing to be reinforced, finite element modeling is carried out on the power transmission iron tower to be reinforced, the appearance position of a local vibration mode is found out through modal analysis, and the weak region is found out through vulnerability analysis on the structure. And then simulating the power characteristics of the power transmission tower after partitions are added at different heights of the weak area, and finding out the optimal reinforcing position. According to the result of finite element simulation, at the optimal reinforcing position, firstly connecting the cylindrical clamps 2 of each sub-component in the component A with main materials at the same height position along the tower body and screwing the bolts 1, and then adjusting the length of the threaded rods 4 screwed into the bolt sleeves 5 in the sub-components according to the distance between two adjacent main materials so as to form a first set of square reinforcing component A; after the component A is assembled, connecting the cylindrical clamp 2 of each sub-component in the component B to the middle part of each side length of the square reinforcing component A, screwing the bolt 1, and then adjusting the length of the threaded rod 4 screwed into the bolt sleeve 5 according to the distance between two adjacent sub-components in the component A, thereby forming a second set of square reinforcing component B; after the component B is assembled, four cylindrical clamps 2 in the component C are respectively connected to the middle part of each side length in the square reinforcing component B, bolts 1 are screwed, the length of the threaded rod 4 screwed into the cross rod 9 is adjusted according to the distance between two opposite side parts in the component B, then the threaded rod 4 is firmly connected with the nut 10 through forced screwing, and therefore a third set of combined reinforcing component C is formed and forms a reinforcing component in a shape of Chinese character 'tian' with the component B. Finally, three groups of reinforcing members A, B, C are spliced and combined, and a new reinforcing transverse partition is formed in the weak area of the power transmission tower to be reinforced.
When the reinforcing crossroom is constructed on site, the construction sequence is strictly observed, certain meteorological conditions are required to be met, and the three sets of reinforcing members are sequentially operated under the condition of low wind (below third wind). When the bolts are screwed down, the bolts are fastened one by one, the torque value of the bolts reaches the relevant standard, and the torque value of the bolts needs to be checked after a set of components are connected and the whole set of components are assembled.
The reinforcing cross partition is formed by sequentially assembling and combining three sets of reinforcing members, and the three sets of members are sequentially and fixedly connected with a main material of the power transmission tower to be reinforced, so that a cross partition surface with unchanged geometry is formed, the effects of transferring horizontal shear force and reasonably distributing the shear force can be achieved, and the overall stability of a weak section of the power transmission tower is improved.
In the beam reinforcing partition, each set of reinforcing members adopts a cylindrical clamp, so that the clamp can be connected with steel pipes and equilateral angle steels, the reinforcing device is preferentially suitable for steel pipe towers, can meet the reinforcing treatment of the angle steel towers and has good universality.
The above embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above structures of the present invention without departing from the basic technical concept of the present invention as described above based on the above general technical knowledge and conventional means of the present patent.
Claims (7)
1. The utility model provides an interval reinforcing apparatus of transmission tower in service which characterized in that includes three sets of different components:
the first set of components comprises two first sub-parts of identical structure and two second sub-parts of identical structure; the first sub-component and the second sub-component respectively comprise a cylindrical clamp, and the first sub-component and the second sub-component are connected together through a bolt sleeve and a threaded rod to form a first rectangular frame reinforcing structure;
the second set of members comprises four third sub-parts with the same structure, each third sub-part comprises two cylindrical clamps, the two cylindrical clamps are respectively connected to the middle part of the side length of the first rectangular frame reinforcing structure, and the four third sub-parts form a second rectangular frame reinforcing structure positioned in the first rectangular frame reinforcing structure;
the third set of components comprises a cross bar and four fourth parts with the same structure; one end of each fourth component is connected with the internal thread of the cross rod; the other ends of the four fourth components are cylindrical clamps, and the cylindrical clamps are connected with the middle part of the side length of the second rectangular frame reinforcing structure; the third set of members and the second set of members are combined together to form a reinforcing member in the shape of a Chinese character 'tian';
the first sub-component comprises a first cylindrical clamp, two bolt sleeves are arranged on the first cylindrical clamp and are perpendicular to each other, a cylindrical opening is formed in the tail end of each bolt sleeve, and threads are arranged on the inner wall of each cylindrical opening; the second sub-component comprises a second cylindrical clamp, the second cylindrical clamp is connected with two solid steel pipes through two universal spherical hinges, the two solid steel pipes are mutually vertical, and the threaded rod is fixed at the tail ends of the solid steel pipes; the threaded rod is matched with the internal thread of the bolt sleeve; realizing the connection of the adjacent first sub-component and the second sub-component to form a first rectangular frame reinforcing structure;
the fourth sub-assembly comprises a fifth cylindrical clamp, and the bottom of the fifth cylindrical clamp is connected with the threaded rod through a rotating bearing.
2. The service transmission tower interval strengthening device of claim 1, wherein the first cylindrical clamp and the second cylindrical clamp are identical in structure and each comprises two semi-circular cylinders, one side of each semi-circular cylinder is connected through a bolt, and the other side of each semi-circular cylinder is connected through a connecting block.
3. The service transmission tower interval strengthening device of claim 1, wherein the third sub-component comprises a third cylindrical clamp and a fourth cylindrical clamp, the third cylindrical clamp is provided with a bent bolt sleeve, a cylindrical opening is formed at the tail end of the bolt sleeve, and threads are formed on the inner wall of the cylindrical opening; the fourth cylindrical clamp is connected with a solid steel pipe, and the threaded rod is fixed at the tail end of the solid steel pipe; the threaded rod is matched with the internal thread of the bolt sleeve.
4. The service transmission tower interval reinforcement device of claim 3, wherein the third cylindrical clamp and the fourth cylindrical clamp are identical in structure and respectively comprise two semi-circular cylinders, one sides of the two semi-circular cylinders are connected through bolts, and the other sides of the two semi-circular cylinders are connected through connecting blocks; so that free opening and closing of the cylinder jig can be achieved.
5. The service power transmission tower interval reinforcing device according to claim 1, wherein the cylindrical clamp is made of the same steel material as the power transmission tower to be reinforced, and the surface of the cylindrical clamp is coated with epoxy resin anticorrosive paint for anticorrosive treatment.
6. The service power transmission tower interval reinforcing device according to claim 1 or 3, wherein the solid steel pipe is made of the same steel material as the power transmission tower to be reinforced, and the surface of the solid steel pipe is coated with epoxy resin anticorrosive paint for anticorrosive treatment.
7. The method for inter-tower strengthening in service according to any of claims 1 to 6, comprising the following steps:
firstly, finite element modeling is carried out on a power transmission iron tower to be reinforced, the appearance position of a local vibration mode is found out through modal analysis, and the vulnerability of the structure is analyzed to find out a weak region;
then simulating the power characteristics of the power transmission tower after partitions are added at different heights of the weak area, and finding out the optimal reinforcing position;
according to the result of finite element simulation, at the optimal reinforcing position, firstly connecting the cylindrical clamps of each sub-component in the first set of component with the main materials at the same height position along the tower body, and then adjusting the length of the threaded rods screwed into the bolt sleeves in the sub-components according to the distance between two adjacent main materials so as to form a first rectangular frame reinforcing structure in a combined manner;
connecting the cylindrical clamps in the parts of the second set of members to the middle part of each side of the first rectangular frame reinforcing structure, and then adjusting the length of the threaded rod screwed into the bolt sleeve according to the distance between the adjacent parts of the first set of members so as to form a second rectangular frame reinforcing structure;
connecting four cylindrical fixtures in a third set of members to the middle part of each side length in the second rectangular frame reinforcing structure respectively, screwing bolts, adjusting the length of a threaded rod screwed into the cross-shaped rod according to the distance between two opposite side parts in the second set of members, and then screwing under stress to firmly connect the threaded rod with nuts so as to form a third set of combined reinforcing member and form a 'field' type reinforcing member together with the second rectangular frame reinforcing structure;
finally, three groups of reinforcing members are spliced and combined, and a new reinforcing cross partition is formed in the weak area of the power transmission tower to be reinforced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993574.6A CN110670937B (en) | 2019-10-18 | 2019-10-18 | Interval reinforcing device and method for service power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993574.6A CN110670937B (en) | 2019-10-18 | 2019-10-18 | Interval reinforcing device and method for service power transmission tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110670937A CN110670937A (en) | 2020-01-10 |
| CN110670937B true CN110670937B (en) | 2020-05-08 |
Family
ID=69083013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910993574.6A Active CN110670937B (en) | 2019-10-18 | 2019-10-18 | Interval reinforcing device and method for service power transmission tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110670937B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427587A (en) * | 2020-09-29 | 2022-05-03 | 中国石油化工股份有限公司 | Side support connecting structure for vibration reduction of high-rise equipment |
| CN114427648A (en) * | 2020-09-29 | 2022-05-03 | 中国石油化工股份有限公司 | Side support connecting structure for vibration reduction of high-rise equipment |
| CN114809701B (en) * | 2022-05-12 | 2023-10-03 | 国网黑龙江省电力有限公司鸡西供电公司 | Sleeve type reinforcing device for power transmission tower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014237991A (en) * | 2013-06-10 | 2014-12-18 | 中国電力株式会社 | Tower structure having allowable collapse direction |
| CN204590652U (en) * | 2015-04-29 | 2015-08-26 | 中南大学 | A kind of ruggedized construction of steel structure net rack component |
| CN208830758U (en) * | 2018-09-12 | 2019-05-07 | 曾福英 | A kind of ancient building bracing means |
| CN209144788U (en) * | 2018-11-26 | 2019-07-23 | 刘杨 | A kind of highway bridge consolidation of pile device |
-
2019
- 2019-10-18 CN CN201910993574.6A patent/CN110670937B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014237991A (en) * | 2013-06-10 | 2014-12-18 | 中国電力株式会社 | Tower structure having allowable collapse direction |
| CN204590652U (en) * | 2015-04-29 | 2015-08-26 | 中南大学 | A kind of ruggedized construction of steel structure net rack component |
| CN208830758U (en) * | 2018-09-12 | 2019-05-07 | 曾福英 | A kind of ancient building bracing means |
| CN209144788U (en) * | 2018-11-26 | 2019-07-23 | 刘杨 | A kind of highway bridge consolidation of pile device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110670937A (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110670937B (en) | Interval reinforcing device and method for service power transmission tower | |
| CN112900626B (en) | Beam-column joint structure of fabricated building and construction method thereof | |
| CN208633269U (en) | A kind of detachable assembling type column and basic ductility joint connection type | |
| CN108060718A (en) | A kind of detachable assembling type column and basic ductility joint connection mode | |
| CN109356292B (en) | Assembled prestressing force large-span beam structure | |
| CN111321846A (en) | Assembled H-shaped prestressed stay bar steel column | |
| CN201332353Y (en) | Support and connection structure of high-voltage DC converter valve | |
| CN202611312U (en) | Three-pipe sleeve type chimney installation structure | |
| CN113550616A (en) | Reinforcing rod based on hoop connection and reinforcing method thereof | |
| CN102011432B (en) | Novel polygonal combined steel pipe | |
| CN210422095U (en) | Iron tower foundation reinforcing support and iron tower supporting structure | |
| CN202831237U (en) | Shaft flange joint structure for assembly-type cold rolled section steel structure connection | |
| CN205025156U (en) | Hyperbola double layer reticulated shell steel construction cooling tower | |
| CN215803422U (en) | Cross-shaped cross-section fixture type reinforcing device for main material of single angle steel | |
| CN108625508A (en) | A kind of Self-resetting assembly of shear wall structure attachment device | |
| CN213477166U (en) | Large-span steel structure | |
| CN204554076U (en) | Rod-cable support hanger structure | |
| CN203859400U (en) | Bus framework for 110kV outdoor power distribution unit | |
| CN209293225U (en) | A kind of Self-resetting repairs U-shaped mild steel energy-dissipating support fastly | |
| CN203475920U (en) | Flange assembled type power transformation framework column | |
| CN210086476U (en) | Assembled steel frame structure support node and connecting device thereof | |
| CN207749722U (en) | The high end valve Room parallel chord truss structured steel pipe roof truss of one kind ± 1100kV current conversion stations | |
| CN204040210U (en) | A kind of plane grid device | |
| CN214613549U (en) | Inner supporting structure capable of being assembled in adjustable mode for corrugated steel web bridge | |
| CN218067496U (en) | Pseudo-static test loading device of assembled tubular pier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |