CN214831933U

CN214831933U - Cable tower

Info

Publication number: CN214831933U
Application number: CN202121628681.8U
Authority: CN
Inventors: 张磊; 郭永兵; 荣伟; 张俭成; 宋国胜; 曾雄星; 时继浩; 刘宸安; 黄克森; 李德强; 王必成; 张传龙
Original assignee: Third Engineering Co Ltd of Highway Engineering Bureau of CCCC; CCCC First Highway Engineering Co Ltd
Current assignee: Third Engineering Co Ltd of Highway Engineering Bureau of CCCC; CCCC First Highway Engineering Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-11-23
Anticipated expiration: 2031-07-16

Abstract

The utility model provides a cable tower relates to bridge construction technical field. The cable tower comprises a first tensile assembly and a second tensile assembly; the first tensile component is connected between the first tower columns on two sides, which are inclined outwards from bottom to top, below the bent part of the cable tower column so as to apply tensile force to the first tower columns; the second tensile assembly is connected between the second tower columns which are inclined inwards from bottom to top above the bent positions of the cable tower columns so as to apply tensile force to the second tower columns. The utility model discloses a cable tower frame is used for construction tower post to have the special-shaped cable tower of the convex department of buckling outwards, and it applys pulling force inwards to the first tower post in both sides by lower supreme outwards slope through first tensile subassembly, applys pulling force inwards to the both sides second tower post by lower supreme inwards slope through second tensile subassembly, and then can effectively improve cable tower post because of the stress change that the department of buckling produced, the support strength of the support system of reinforcing pylon.

Description

Cable tower

Technical Field

The utility model belongs to the technical field of the bridge construction technique and specifically relates to a cable tower pylon is related to.

Background

The cable tower refers to a tower-shaped structure supporting a main cable on a suspension bridge or a cable-stayed bridge, and the existing cable tower structure is generally in a door type, a slant-legged door type, an inverted V-shaped, a Y-shaped, an A-shaped, a herringbone shape or an H-shaped structure. The towers which are erected in the construction process of the cable towers in various shapes and used for supporting the templates are formed by combining supports which are correspondingly erected on the tower columns, the cross beams and other members of the cable towers according to the shapes of the cable towers, and a supporting system of the towers has enough supporting strength and can meet the construction requirements of the cable towers in various shapes.

However, for a special-shaped cable tower, such as a long-neck bottle-shaped cable tower, an outwardly protruding bending part is arranged between a lower tower column and a middle tower column, and the bending part enables the lower tower column and the middle tower column to be respectively inclined outwards and inwards, so that the stress of the tower columns is greatly changed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable tower to alleviate the special-shaped cable tower such as the long-neck bottle type cable tower that has convex department of buckling outwards to the pylon that exists among the prior art, if according to present pylon construction mode at the pylon of cable tower, component department such as crossbeam correspondence set up the support and form the pylon with the combination, then there is the technical problem who supports the not enough condition of intensity in the support system of this pylon.

In a first aspect, the present invention provides a cable tower comprising a first tension resistant assembly and a second tension resistant assembly;

the first tensile component is connected between the first tower columns on two sides, which are inclined from bottom to top outwards, below the bent part of the cable tower column so as to apply tensile force to the first tower columns;

the second tensile assembly is connected between second tower columns which are inclined inwards from bottom to top above the bent positions of the cable tower columns so as to apply tensile force to the second tower columns.

In an alternative embodiment, the second tension resistant assembly comprises a first connecting rod, a second connecting rod, and a third connecting rod;

the first connecting rod, the second connecting rod and the third connecting rod are distributed at intervals from bottom to top along the vertical direction, and the first connecting rod, the second connecting rod and the third connecting rod are horizontally connected between the second tower columns on two sides of the middle part of the cable tower.

In an alternative embodiment, the first, second and third connecting bars are all prestressed connecting bars.

In an alternative embodiment, the prestress of the first connecting rod and the prestress of the second connecting rod are both greater than the prestress of the third connecting rod.

In an optional embodiment, a first diagonal brace is connected between the first connecting rod and the second tower column, a second diagonal brace is connected between the second connecting rod and the second tower column, and a third diagonal brace is connected between the third connecting rod and the second tower column.

In an optional embodiment, the number of the first connecting rods is multiple, the multiple first connecting rods are distributed on the same horizontal plane in parallel, and a first reinforcing rod is vertically connected between two adjacent first connecting rods;

the number of the second connecting rods is multiple, the second connecting rods are distributed on the same horizontal plane in parallel, and a second reinforcing rod is vertically connected between every two adjacent second connecting rods;

the third connecting rod is a plurality of, and is a plurality of third connecting rod parallel distribution is on same horizontal plane, and adjacent two be connected with the third stiffener between the third connecting rod perpendicularly.

In an alternative embodiment, the first tension member includes a tension rod horizontally connected between the first towers at both sides of the lower portion of the pylon.

In an alternative embodiment, the number of the pull rods is multiple, and the pull rods are distributed on the same horizontal plane in parallel.

In an optional embodiment, the cable tower further comprises a first beam bracket, wherein the first beam bracket is connected between the first towers on two sides, and the end part of the first beam bracket is positioned below the joint of the first tower and the second tower of the cable tower.

In an optional embodiment, the tower further comprises a second beam bracket with an arched top, the second beam bracket is connected between the second towers on two sides, and the second beam bracket is located between the second tensile assembly and the top of the second tower of the cable tower.

The utility model provides a cable tower frame, which comprises a first tensile component and a second tensile component; the first tensile component is connected between the first tower columns on two sides, which are inclined outwards from bottom to top, below the bent part of the cable tower column so as to apply tensile force to the first tower columns; the second tensile assembly is connected between the second tower columns which are inclined inwards from bottom to top above the bent positions of the cable tower columns so as to apply tensile force to the second tower columns. The utility model discloses a cable tower frame is used for the construction column to have the special-shaped cable tower of the convex department of buckling outwards, and special-shaped cable tower is like long neck bottle type cable tower. This cable tower frame exerts the pulling force inwards to the first pylon of both sides from lower to upper outside slope through first tensile subassembly, and then can improve the stress change that is located the first pylon of kink below because of kink department produces, promotes the structural stability of first pylon. And the cable tower frame applies inward tension to the second tower columns on two sides inclined inwards from bottom to top through the second tensile assembly, so that the stress change of the second tower column above the bent part due to the bent part can be improved, and the structural stability of the second tower column is improved. Consequently the utility model discloses a cable tower frame mutually supports through first tensile subassembly and second tensile subassembly and can effectively improve the stress change that cable tower column produced because of buckling, strengthens the support intensity of the support system of pylon.

Compared with the prior art, the utility model provides a cable tower frame can apply interior pulling force to the first pylon in both sides by supreme outside slope down of pylon department below of buckling through using first tensile subassembly, can apply interior pulling force to the both sides second pylon by supreme inside slope down of pylon department top of buckling through the second tensile subassembly, and then can effectively improve cable tower column because of the stress change that the department of buckling produced, the support intensity of the support system of reinforcing pylon.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a pylon column, a first tensile assembly, and a second tensile assembly provided in an embodiment of the present invention;

fig. 2 is a cross-sectional view of a pylon column, a first tension assembly, and a second tension assembly provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first tensile member according to an embodiment of the present invention;

figure 4 is a cross-sectional view of a first tensile member provided in accordance with an embodiment of the present invention;

fig. 5 is a front view of a first connecting rod according to an embodiment of the present invention;

fig. 6 is a top view of a first connecting rod according to an embodiment of the present invention;

fig. 7 is a front view of a second connecting rod according to an embodiment of the present invention;

fig. 8 is a top view of a second connecting rod according to an embodiment of the present invention;

fig. 9 is a front view of a third connecting rod provided in the embodiment of the present invention;

fig. 10 is a top view of a third connecting rod provided in the embodiment of the present invention;

fig. 11 is a schematic structural view of a first beam bracket according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a second beam bracket according to an embodiment of the present invention.

Icon: 1-a first tensile member; 10-a pull rod; 2-a second tensile assembly; 20-a first connecting rod; 200-a first reinforcement bar; 21-a second connecting rod; 210-a second reinforcement bar; 22-a third connecting rod; 220-third reinforcement bar; 3-a first tower; 4-a second tower; 5-a first inclined strut; 6-a second inclined strut; 7-a third diagonal brace; 8-a first beam support; 80-a first beam; 9-a second beam support; 90-second beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example (b):

as shown in fig. 1 and 2, the cable tower provided in the present embodiment includes a first tensile member 1 and a second tensile member 2; the first tensile component 1 is connected between the first towers 3 at two sides inclined from bottom to top outwards below the bent part of the cable tower column so as to apply tensile force to the first towers 3; the second tensile assembly 2 is connected between the second tower columns 4 which are inclined inwards from bottom to top above the bent part of the cable tower column so as to apply tensile force to the second tower columns 4.

The cable tower frame of the embodiment is used for constructing a special-shaped cable tower with a bent part protruding outwards, such as a long-neck bottle-shaped cable tower. This cable tower frame exerts the pulling force inwards to the first column 3 of both sides from lower to upper outside slope through first tensile subassembly 1, and then can improve the stress change that first column 3 that is located the below of buckling department produced because of buckling department, promotes the structural stability of first column 3. And the cable tower frame applies inward pulling force to the second tower columns 4 on two sides inclined inwards from bottom to top through the second tensile component 2, so that the stress change of the second tower columns 4 above the bent positions due to the bent positions can be improved, and the structural stability of the second tower columns 4 is improved.

When the special-shaped cable tower is a long-neck bottle-shaped cable tower, the bent part is usually arranged between the middle tower column and the lower tower column of the cable tower, at the moment, the first tower column 3 is the lower tower column close to the root part of the cable tower, and the second tower column 4 is the middle tower column of the cable tower. Because the design of department of buckling, supreme slope inwards is down followed to the well pylon of cable tower, and supreme slope outwards is down followed to the lower pylon, leads to the pylon of cable tower can produce great cross sectional stress change in department of buckling, mutually supports through first tensile subassembly 1 and second tensile subassembly 2 this moment, can effectively overcome the cross sectional stress change that the department of buckling produced to the support intensity of the whole support system of reinforcing pylon.

Compared with the prior art, the cable tower provided by the embodiment can apply inward tension to the first towers 3 at two sides inclined outwards from bottom to top below the bent part of the tower by using the first tensile assembly 1, and can apply inward tension to the second towers 4 at two sides inclined inwards from bottom to top above the bent part of the tower by using the second tensile assembly 2, so that the stress change of the cable tower due to the bent part of the cable tower can be effectively improved, and the support strength of the support system of the tower is enhanced.

By checking and calculating by using the existing stress calculation method, when the first tensile assembly 1 is not arranged between the first towers 3 at two sides, the tensile stress appears at the bottom of the first tower 3, the maximum tensile stress can reach 0.77 MPa, and after the first tensile assembly 1 is arranged, the tensile stress does not appear at the bottom of the first tower 3. When the second tensile assembly 2 is not arranged between the second tower columns 4 on the two sides, the tensile stress is generated at the bottom of the second tower columns 4, the maximum tensile stress can reach 6.1 MPa, and after the second tensile assembly 2 is arranged, the tensile stress is not generated at the bottom of the second tower columns 4.

It should be noted that the cable tower in this embodiment is a temporary support, and is used to improve the stress variation caused by the bending design of the first tower column 3 and the second tower column 4 that have already been constructed, so as to ensure the normal and stable construction of the rest of the tower columns.

And after the integral construction of the cable tower column is finished, the cable tower column can be detached. For example, the first tensile assembly 1 can be fixed between the first tower columns 3 on the two sides in an embedded mode, the second tensile assembly 2 can also be fixed between the second tower columns 4 on the two sides in an embedded mode, and after the whole construction of the cable tower column is finished, the first tensile assembly 1 and the second tensile assembly 2 are detached through a cutting mode. Or, can all pre-buried sleeve pipe on first pylon 3 of both sides and both sides second pylon 4, reuse fasteners such as pre-buried sleeve pipe and nut and realize the fixed connection between first tensile subassembly 1 and the first pylon 3 to and realize the fixed connection between second tensile subassembly 2 and the second pylon 4.

As shown in fig. 3 and 4, the first tension preventing member 1 includes a tension rod 10, and the tension rod 10 is horizontally connected between the first columns 3 at both sides of the lower portion of the pylon.

In order to effectively improve the effect of the first tensile member 1, the tension rod 10 may be plural.

Wherein, the pull rod 10 can be made of a steel strand with the diameter of 15.24 mm.

Furthermore, there are a plurality of pull rods 10, and a plurality of pull rods 10 are distributed in parallel on the same horizontal plane.

For example, 20 tie rods 10 may be provided, with 20 tie rods 10 arranged in two groups. As shown in fig. 4, the two sets of tie rods 10 are spaced apart and disposed on the same horizontal plane.

In this embodiment, the tension of each tie rod 10 can be 100 kn.

As shown in fig. 5, 7 and 9, the second tensile assembly 2 includes a first connecting rod 20, a second connecting rod 21 and a third connecting rod 22. The first connecting rod 20, the second connecting rod 21 and the third connecting rod 22 are distributed at intervals from bottom to top along the vertical direction, and the first connecting rod 20, the second connecting rod 21 and the third connecting rod 22 are horizontally connected between the second tower columns 4 on two sides of the middle part of the cable tower.

First tensile subassembly 1 is including a plurality of pull rods 10 of parallel distribution on same horizontal plane, and when second tensile subassembly 2 includes head rod 20, second connecting rod 21 and third connecting rod 22, can effectively guarantee moment of flexure and stress control to the whole pylon of cable tower to effectively guarantee the support strength of whole cable tower pylon.

In order to effectively control the section stress and displacement of the tower, the interval between the first connecting rod 20 and the second connecting rod 21, and the interval between the second connecting rod 21 and the third connecting rod 22 are required to meet the design requirements.

It is preferable in this embodiment that the interval between the first connecting rod 20 and the second connecting rod 21 is greater than the interval between the second connecting rod 21 and the third connecting rod 22. For example, the interval between the first connecting rod 20 and the second connecting rod 21 may be 18 m, and the interval between the second connecting rod 21 and the third connecting rod 22 may be 13.5 m.

In order to ensure the structural stability of the first connecting rod 20, the second connecting rod 21 and the third connecting rod 22, so as to prolong the service life thereof, it is preferable that the first connecting rod 20, the second connecting rod 21 and the third connecting rod 22 are all prestressed connecting rods.

Wherein the prestressing of the first 20, second 21 and third 22 connecting rods is a pre-applied pressure, which may be loaded by arranging a jack at one of the ends of the connecting rods.

Further, the prestress of the first connecting rod 20 and the prestress of the second connecting rod 21 are both greater than the prestress of the third connecting rod 22.

Because the second tower columns 4 on the two sides incline inwards from bottom to top, the horizontal distance between the second tower columns 4 on the two sides is gradually reduced from bottom to top, and at the moment, the prestress of the first connecting rod 20 and the prestress of the second connecting rod 21 are both greater than the prestress of the third connecting rod 22, so that the second tensile assembly 2 can achieve a good tensile effect.

In practical applications, the prestress of the first connecting rod 20 and the second connecting rod 21 can be 2000 kn, and the prestress of the third connecting rod 22 is 1800 kn.

In this embodiment, for the convenience of turnover use pull rod 10, head rod 20, second connecting rod 21 and third connecting rod 22 under the construction operating mode of difference, pull rod 10, head rod 20, second connecting rod 21 and third connecting rod 22 all can be the telescopic link, and the length of telescopic link can be adjusted to can be applicable to not unidimensional pylon.

Wherein, the telescopic link includes that the inner wall is provided with the screw rod of internal screw thread screw sleeve pipe and outer wall and is provided with the screw rod of external screw thread, and screw rod threaded connection is intraductal in the screw sleeve, and the length of telescopic link can be adjusted through twisting the screw rod at screw sleeve intraductal rotation.

As shown in fig. 5, 7 and 9, a first diagonal brace 5 is connected between the first connecting rod 20 and the second tower column 4, a second diagonal brace 6 is connected between the second connecting rod 21 and the second tower column 4, and a third diagonal brace 7 is connected between the third connecting rod 22 and the second tower column 4.

The first inclined strut 5, the second inclined strut 6 and the third inclined strut 7 can further enhance the tensile effect of the second tensile assembly 2, further effectively improve the stress change at the second tower column 4, and improve the supporting strength of the cable tower.

In the present embodiment, the first inclined strut 5, the second inclined strut 6 and the third inclined strut 7 may be all existing construction members, such as steel brackets.

As shown in fig. 6, 8 and 10, there are a plurality of first connecting rods 20, the plurality of first connecting rods 20 are distributed in parallel on the same horizontal plane, and a first reinforcing rod 200 is vertically connected between two adjacent first connecting rods 20; the number of the second connecting rods 21 is multiple, the multiple second connecting rods 21 are distributed on the same horizontal plane in parallel, and a second reinforcing rod 210 is vertically connected between two adjacent second connecting rods 21; the number of the third connecting rods 22 is multiple, the multiple third connecting rods 22 are distributed on the same horizontal plane in parallel, and a third reinforcing rod 220 is vertically connected between two adjacent third connecting rods 22.

The first connecting rods 20 distributed in parallel, the second connecting rods 21 distributed in parallel and the third connecting rods 22 distributed in parallel can balance and effectively improve the tensile effect of the second tensile assembly 2, and further effectively improve the stress change of the second tower column 4 caused by the bending position of the tower column.

And first reinforcing rod 200 then can promote the overall stability and the bulk strength between a plurality of first connecting rod 20, and second reinforcing rod 210 can promote the overall stability and the bulk strength between a plurality of second connecting rod 21, and overall stability and the bulk strength between a plurality of third connecting rod 22 can be promoted to third reinforcing rod 220, and first reinforcing rod 200, second reinforcing rod 210 and third reinforcing rod 220 can mutually support the effect, effectively promote the connection stability and the life of second tensile assembly 2.

As shown in fig. 11, the cable tower provided in this embodiment may further include a first beam bracket 8, the first beam bracket 8 is connected between the first towers 3 on both sides, and an end of the first beam bracket 8 is located below a connection position of the first tower 3 and the second tower 4 of the cable tower.

The first beam support 8 is used as a support frame of the first beam 80, so that the first beam 80 is conveniently constructed at the bending part between the first tower column 3 and the second tower column 4, and the first beam 80 is a fixing structure of the cable tower and is used for ensuring the stability of the bending part of the cable tower column in the subsequent use process of the cable tower.

The first beam support 8 is also a temporary support, and after the first beam 80 is constructed, the first beam support 8 can be removed. Specifically, the first tensile assembly 1 may be connected between the first towers 3 on both sides after the first beam 80 is constructed and the first beam bracket 8 is removed.

In this embodiment, the first beam bracket 8 may be an existing beret bracket, and a floor steel pipe may be installed below the beret bracket as a pillar.

Furthermore, the bailey bracket can be formed by connecting a plurality of upper chords, lower chords, vertical chords, cross beams and other connecting rods.

As shown in fig. 12, the cable tower provided in this embodiment may further include a second beam support 9 having an arched top, the second beam support 9 is connected between the second towers 4 on both sides, and the second beam support 9 is located between the second tension resisting assembly 2 and the tops of the second towers 4 of the cable tower.

The second beam support 9 is used as a support frame for the second beam 90, so that the second beam 90 with the bottom being arched is conveniently constructed between the second towers 4 on two sides, and the second beam 90 is also a fixing structure of the cable tower and is used for ensuring the stability of the top of the second tower 4 of the cable tower in the subsequent use process of the cable tower.

The second beam support 9 is also a temporary support, and after the second beam 90 is constructed, the second beam support 9 can be removed.

In this embodiment, the second beam support 9 may be an arch support with an arch top, and a steel bracket may be connected between the lower part of the arch support and the second tower column 4. Further, the steel bracket can be connected with the second tower column 4 through a steel plate embedded in the second tower column 4.

The arched bracket may be a truss structure, which may be formed by joining i-beams.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A cable tower, characterized by comprising a first tensile component (1) and a second tensile component (2);

the first tensile component (1) is connected between the first tower columns (3) on two sides, which are inclined outwards from bottom to top, below the bent part of the cable tower column so as to apply tensile force to the first tower columns (3);

the second tensile assembly (2) is connected between second towers (4) which are inclined inwards from bottom to top above the bent part of the cable tower, so that tensile force is applied to the second towers (4).

2. Pylon according to claim 1, characterized in that said second tensile assembly (2) comprises a first connecting rod (20), a second connecting rod (21) and a third connecting rod (22);

the first connecting rod (20), the second connecting rod (21) and the third connecting rod (22) are distributed at intervals from bottom to top along the vertical direction, and the first connecting rod (20), the second connecting rod (21) and the third connecting rod (22) are horizontally connected between the second tower columns (4) on the two sides of the middle part of the cable tower.

3. Pylon according to claim 2, characterized in that said first (20), second (21) and third (22) connecting rods are all prestressed connecting rods.

4. Pylon according to claim 3, characterised in that the prestress of the first connecting rod (20) and of the second connecting rod (21) are each greater than the prestress of the third connecting rod (22).

5. Pylon according to claim 2, characterized in that a first diagonal brace (5) is connected between the first connecting rod (20) and the second pylon (4), a second diagonal brace (6) is connected between the second connecting rod (21) and the second pylon (4), and a third diagonal brace (7) is connected between the third connecting rod (22) and the second pylon (4).

6. The cable tower of claim 2, wherein the first connecting rods (20) are multiple, the multiple first connecting rods (20) are distributed in parallel on the same horizontal plane, and a first reinforcing rod (200) is vertically connected between two adjacent first connecting rods (20);

the number of the second connecting rods (21) is multiple, the second connecting rods (21) are distributed on the same horizontal plane in parallel, and a second reinforcing rod (210) is vertically connected between every two adjacent second connecting rods (21);

the number of the third connecting rods (22) is multiple, the third connecting rods (22) are distributed on the same horizontal plane in parallel, and a third reinforcing rod (220) is vertically connected between every two adjacent third connecting rods (22).

7. Pylon according to any of claims 1 to 6, characterised in that the first tension element (1) comprises a tie rod (10), the tie rod (10) being connected horizontally between the first pylons (3) on both sides of the lower part of the pylon.

8. Pylon according to claim 7, characterised in that said tie rods (10) are in plurality, said tie rods (10) being distributed in parallel on a same horizontal plane.

9. Pylon according to any of claims 1 to 6, further comprising a first beam bracket (8), said first beam bracket (8) being connected between the first towers (3) on both sides, and the ends of said first beam bracket (8) being located below the connection of the first (3) and second (4) towers of the pylon.

10. Pylon according to any one of claims 1 to 6, further comprising a second beam support (9) arched at the top, said second beam support (9) being connected between the second pylons (4) on both sides, and said second beam support (9) being located between the second tensile assembly (2) and the top of the second pylon (4) of the pylon.