An ultra-high performance concrete cross web post type support for an electrified railway overhead contact system

Abstract

The application provides an ultra-high performance concrete horizontal web bar type support for an electrified railway contact network, which aims to solve the problems of low strength of support bearing capacity, cracks on the surface of the support and inconvenience in climbing. The ultra-high performance concrete horizontal web bar type support for the electrified railway contact network comprises a base, a column body arranged on the base, the column body is in the shape of an isosceles trapezoid, the column body comprises two symmetrically arranged inclined downward column plates, the column plates are connected through a plurality of webs, a climbing opening is formed between adjacent webs, a reinforcing rib is arranged in the column plate, the reinforcing rib is in an S-shaped distribution, a plurality of reinforcing plates are arranged on the reinforcing rib, a pouring hole is arranged on the reinforcing plate, the upper ends of the two reinforcing ribs are connected through a bearing rib, the bearing rib is arranged in the uppermost web, a supporting rib is arranged at the lower end of the bearing rib, and the supporting rib penetrates through the web and is connected with the base. The support structure has high supporting strength, the cracks on the surface of the support and the climbing opening are reduced, and the quality of the support is improved.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line supports for electrified railways, and in particular to an ultra-high performance concrete horizontal web support for overhead contact lines of electrified railways. Background Technology

[0002] Since my country's railway construction entered the era of high-speed electrification, prestressed concrete cross-braced supports for electrified railway contact networks have been widely used in railway engineering. However, because these cross-braced supports are square channel columns, the force is directional, and the two sides of the support have a large surface area. Under stress conditions and extreme weather, they are at higher risk of overturning, resulting in low load-bearing capacity. Furthermore, the concrete on the surface of the support and at the connection points is prone to cracks of varying degrees, affecting the durability of the support and posing safety hazards. At the same time, due to the current manufacturing process, the connecting crossbars of the supports are small in area and sharp, with few stress points, making it inconvenient for workers to climb and carry out construction and maintenance during construction and installation. Summary of the Invention

[0003] This invention proposes an ultra-high performance concrete horizontal web bar support for electrified railway catenary, which solves the problems of low load-bearing capacity, easy cracking, and inconvenience in climbing current supports.

[0004] The technical solution of this invention is implemented as follows:

[0005] A high-performance concrete horizontal web-type support for electrified railway catenary includes a base, a column on the base, the column being an isosceles trapezoidal shape, the column comprising two symmetrically inclined downward-facing column plates, the column plates being connected by several web plates, and climbing openings forming between adjacent web plates, the column plates containing reinforcing ribs arranged in an S-shape, the reinforcing ribs having several reinforcing plates with casting holes, the upper ends of two reinforcing ribs being connected by load-bearing ribs, the load-bearing ribs being located in the uppermost web plate, the lower ends of the load-bearing ribs having supporting ribs, the supporting ribs penetrating the web plates and connected to the base.

[0006] The web is arranged in a stepped shape, with the lowest web extending the longest distance. Springs are symmetrically arranged on the web, and climbing boards are mounted on the springs. The climbing boards are located inside the climbing opening and are slidably connected to the support reinforcement. The stepped web increases the force points for workers to climb, making it easier for them to climb. At the same time, the springs support the climbing boards, and the connection between the climbing boards and the support reinforcement allows the weight exerted by the climbing boards on the web to be absorbed by the springs, and part of the weight to be transferred by the support reinforcement. This avoids the problem of cracks appearing in the concrete at the climbing opening of the support due to climbing and trampling.

[0007] The support ribs are provided with grooves and limiting holes. The climbing board is provided with a sliding rod at one end near the support ribs. The sliding rod slides in the grooves and the end of the sliding rod is provided with a limiting ball that cooperates with the limiting hole, which facilitates the installation of the climbing board.

[0008] The base has symmetrically embedded plates at its bottom, which are inclined at the same angle as the column plate. Support rods are provided on both sides of the embedded plates, and anti-tilting plates are provided at both ends of the support rods, which further improves the lateral load-bearing strength of the support column and prevents the support column from overturning.

[0009] The base has a pre-embedded limiting seat at the bottom. The supporting rib passes through the base and is connected to the pre-embedded limiting seat, which can locate the installation position of the support body and provide a certain support to the support body, thereby improving the strength of the support body to resist external forces.

[0010] The base is equipped with a protective net at the bottom, which works together with the ultra-high performance concrete to not only reduce the electrical flux of the concrete and the migration of harmful chloride ions, and improve the resistance to freeze-thaw cycles and sulfate corrosion, but also prevent the concrete and steel bars at the base from being corroded by the environment, thus improving the durability of the support column.

[0011] Several reinforcing ribs are provided between the two column plates. The reinforcing ribs are located on both sides of the web plate, which further improves the connection tension between the two column plates, making the overall structure more compact and more stable.

[0012] Beneficial effects

[0013] This invention increases the contact area between the support and the ground by setting the support body in an isosceles trapezoidal shape, making the support more stable. At the same time, the reinforcement bars and reinforcement plates further enhance the hardness and tensile strength of the support. The load-bearing bars transfer part of the force on the support, reducing the load on the support and improving the support's load-bearing capacity, thus reducing the risk of overturning under abnormal conditions. By using ultra-high performance concrete and reinforcement plates to separate the large surface area of ​​the support, the characteristics of ultra-high performance concrete make it easier to make the concrete in each part of the support denser, more compact, and stronger during production. The shrinkage and creep of the concrete are minimized, avoiding the gradual formation of cracks caused by shrinkage and creep due to the large concrete area, such as voids, pitting, porosity, and decreased viscosity, thus improving the quality of the support. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view schematic diagram of the present invention;

[0016] Figure 2 This is a side view schematic diagram of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a schematic diagram of a climbing board;

[0019] Figure 5 This is a schematic diagram of a reinforcing rib. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] like Figures 1-2 As shown, a high-performance concrete horizontal web-type support for electrified railway contact networks includes a base 1, on which a column is mounted. The column is in the shape of an isosceles trapezoid and includes two symmetrically inclined downward-facing column plates 2. The column plates 2 are connected by several web plates 11, and climbing openings 10 are formed between adjacent web plates 11. Reinforcing ribs 4 are provided inside the column plates 2, and the reinforcing ribs 4 are distributed in an S-shape. Several reinforcing plates 3 are provided on the reinforcing ribs 4, and casting holes 5 are provided on the reinforcing plates 3 to facilitate the casting and molding of the column. The upper ends of the two reinforcing ribs 4 are connected by load-bearing ribs 6, which are located in the uppermost web plate 11. Supporting ribs 7 are provided at the lower ends of the load-bearing ribs 6, and the supporting ribs 7 pass through the web plates 11 and are connected to the base 1.

[0023] The working principle of this embodiment is as follows: The isosceles trapezoidal support structure increases the contact area between the support and the ground, making it more stable than a rectangular support structure. Simultaneously, the reinforcing ribs 4 and reinforcing plates 3 further enhance the concrete strength and tensile strength of the support. The load-bearing ribs 6 and supporting ribs 7 transfer some of the force on the support, reducing the pressure under external loads and improving the support's load-bearing capacity, thus lowering the risk of overturning. The use of ultra-high performance concrete, with the support surface and interior divided into several sections by the reinforcing plates 3, makes each section of concrete denser, stronger, and reduces shrinkage and creep, preventing the support surface and interior from collapsing due to concrete compaction. The large concrete area leads to shrinkage and creep, causing factors such as porosity, pitting, loosening, and decreased viscosity, resulting in cracks that improve the quality of the support pillars. This invention utilizes a new material, ultra-high performance concrete, and incorporates basalt fibers to enhance the crack resistance and durability of the support pillars. By adjusting the pillar structure design and following the pillar production process, this invention effectively overcomes the quality problems of existing pillars that are prone to cracking, improves the durability of the pillars under normal operating conditions, reduces production costs and maintenance expenses, increases the safety factor, and meets the strength and standard requirements for railway line operation support pillars.

[0024] Example 2

[0025] Preferably, the web 11 is arranged in a stepped shape, with the lowest web 11 extending the longest distance. Springs 18 are symmetrically arranged on the web 11, and climbing boards 19 are mounted on the springs 18. The climbing boards 19 are located within the climbing opening 10 and are slidably connected to the supporting ribs 7. The stepped web 11 increases the force points for workers climbing, facilitating climbing. Simultaneously, the springs 18 support the climbing boards 19, and the connection between the climbing boards 19 and the supporting ribs 7 allows the climbing boards 19 to apply force to the web 11. The weight of the board 11 is absorbed by the spring 18, and part of the weight is transferred by the support rib 7, avoiding the problem of concrete cracking at the climbing opening of the support due to climbing and stepping. The support rib 7 is provided with a groove 9, and the groove 9 is provided with a limiting hole 8. The end of the climbing board 19 near the support rib 7 is provided with a sliding rod 20, which slides in the groove 9. The end of the sliding rod 20 is provided with a limiting ball 21 that cooperates with the limiting hole 8, which facilitates the installation of the climbing board 19. Embedded plates 13 are symmetrically provided below the base 1. The embedded plate 13 is inclined and at the same angle as the column plate 2. Support rods 14 are provided on both sides of the embedded plate 13, and anti-tilting plates 15 are provided at both ends of the support rods 14, which further improves the lateral bearing capacity of the support body and prevents the support body from overturning. An embedded limiting seat 16 is provided below the base 1. The support rib 7 passes through the base 1 and is connected to the embedded limiting seat 16, which can position the installation position of the support body and provide a certain support to the support body, thereby improving the strength of the support body against external forces. A protective net 17 is provided at the lower end of the base 1. Working together with the ultra-high performance concrete, it can not only reduce the electrical flux of the concrete and the amount of harmful chloride ion migration, and improve the resistance to freeze-thaw and sulfate corrosion, but also prevent the root concrete and steel bars from being corroded by the environment, thereby improving the durability of the support. Several reinforcing ribs 12 are provided between the two column plates 2. The reinforcing ribs 12 are located on both sides of the web plate 11, which further improves the connection tension between the two column plates 2, making the overall structure more compact and more stable.

[0026] The other structures in this embodiment are the same as in Embodiment 1.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-performance concrete horizontal web support for electrified railway catenary, comprising a base (1), characterized in that: A column is provided on the base (1). The column is in the shape of an isosceles trapezoid. The column includes two symmetrically inclined column plates (2) that are set downwards. The column plates (2) are connected by several web plates (11). Climbing openings (10) are formed between adjacent web plates (11). The column plates (2) are provided with reinforcing ribs (4). The reinforcing ribs (4) are distributed in an S-shape. Several reinforcing plates (3) are provided on the reinforcing ribs (4). The reinforcing plates (3) are provided with casting holes (5). The upper ends of the two reinforcing ribs (4) are connected by load-bearing ribs (6). The load-bearing ribs (6) are located in the uppermost web plate (11). The lower end of the load-bearing ribs (6) is provided with supporting ribs (7). The supporting ribs (7) pass through the web plate (11) and are connected to the base (1).

2. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 1, characterized in that: The web (11) is arranged in a stepped shape, with the lowest web (11) extending the longest distance. Springs (18) are symmetrically arranged on the web (11), and climbing boards (19) are arranged on the springs (18). The climbing boards (19) are located inside the climbing opening (10), and the climbing boards (19) are slidably connected to the support ribs (7).

3. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 2, characterized in that: The support rib (7) is provided with a groove (9), and the groove (9) is provided with a limiting hole (8). The climbing board (19) is provided with a sliding rod (20) at one end near the support rib (7). The sliding rod (20) is slidably disposed in the groove (9), and the end of the sliding rod (20) is provided with a limiting ball (21) that cooperates with the limiting hole (8).

4. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 1, characterized in that: Embedded plates (13) are symmetrically arranged below the base (1). The embedded plates (13) are inclined and have the same inclination angle as the column plate (2). Support rods (14) are provided on both sides of the embedded plates (13), and anti-tilting plates (15) are provided at both ends of the support rods (14).

5. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 1, characterized in that: A pre-embedded limiting seat (16) is provided below the base (1), and the supporting rib (7) passes through the base (1) and is connected to the pre-embedded limiting seat (16).

6. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 1, characterized in that: The lower end of the base (1) is provided with a protective net (17).

7. The ultra-high performance concrete horizontal web support for electrified railway contact networks according to claim 1, characterized in that: Several reinforcing ribs (12) are provided between the two column plates (2), and the reinforcing ribs (12) are provided on both sides of the web plate (11).

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