A high-corrosion-resistant ring-shaped support for overhead contact lines on coastal high-speed railways

Abstract

This utility model belongs to the technical field of electrified railway catenary line facilities, specifically disclosing a highly corrosion-resistant ring-shaped support for coastal high-speed railway catenary. It includes a concrete support body, a support base, and a cantilever base grounding structure. The concrete support body includes a steel reinforcement skeleton and concrete wrapped around the skeleton, using corrosion-resistant fiber-reinforced concrete. The support base is located at the bottom of the concrete support body, and an anti-corrosion layer is provided on the outside of the support base. The cantilever base grounding structure includes two sets of steel pipe groups, two sets of connecting rib groups, and grounding ribs. This utility model can effectively improve the normal operating life of the ring-shaped support in near-shore environments, enabling it to operate normally in near-shore environments with high corrosion levels of RC5 and RCX. It strengthens the overall wind and crack resistance of the support, improves its overall corrosion resistance, ensures effective operation under high-density rainwater and seawater erosion and strong winds, and reduces subsequent on-site line maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrified railway catenary line facilities, and specifically relates to a highly corrosion-resistant catenary ring support for coastal high-speed railways. Background Technology

[0002] With the rapid development of my country's railway industry, especially the continuous advancement of the construction of high-speed railways along the coast, the overhead contact line ring supports face severe challenges in the unique coastal environment.

[0003] Conventional concrete ring supports are typically used in railway subgrades with train speeds of 200km / h-250km / h and below. However, their corrosion resistance and strength are limited in actual use. Coastal environments are often more corrosive, potentially reaching RC5 or even similar high corrosion levels like RCX. Conventional concrete ring supports can only be used in environments with corrosion levels of RC3 and below. Moreover, coastal areas also face the risk of erosion from strong winds and high-density rainwater and seawater. The strength of traditional concrete ring supports cannot meet the normal service life requirements of coastal environments.

[0004] Therefore, it is particularly important to develop a highly corrosion-resistant ring-shaped support for the overhead contact line of a high-speed railway along the coast. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a highly corrosion-resistant ring-shaped support for the overhead contact line of a high-speed railway along the coast, which can effectively improve the normal operating life of the ring-shaped support in the near-shore environment.

[0006] The technical solution of this utility model is: a high corrosion-resistant ring support for the overhead contact line of a high-speed railway along the coast, comprising a concrete support body, a support base, and a cantilever base grounding structure.

[0007] The main body of the concrete column includes a steel reinforcement cage and concrete wrapped around the outside of the steel reinforcement cage. The concrete is corrosion-resistant fiber-reinforced concrete. The column base is located at the bottom of the main body of the concrete column, and the exterior of the column base is covered with an anti-corrosion layer. The grounding structure of the cantilever base includes two sets of steel pipe groups, two sets of connecting bar groups, and grounding bars. Each set of steel pipes includes multiple steel pipes, each of which is pre-embedded in the main body of the concrete column. At least one end of each steel pipe penetrates the side wall of the main body of the concrete column to form an installation hole for installing the cantilever base. Each set of connecting bar groups is connected to multiple steel pipes in each set of steel pipe groups, and each set of connecting bar groups includes at least one connecting bar. The grounding bars are located inside the main body of the concrete column, with one end connected to the connecting bars of the two sets of connecting bar groups, and the other end grounded.

[0008] Furthermore, the main body of the concrete column is a prestressed concrete column, and the concrete is basalt fiber concrete.

[0009] Furthermore, the anti-corrosion layer includes a first anti-corrosion layer and a second anti-corrosion layer. The first anti-corrosion layer is wrapped around the outside of the support base and is made of zinc plating. The second anti-corrosion layer is wrapped around the outside of the first anti-corrosion layer and is made of fluorocarbon coating.

[0010] Furthermore, each group of steel pipes comprises four steel pipes, and the two groups of steel pipes are distributed in the upper half of the main body of the concrete support, with the four steel pipes of the two groups distributed sequentially. The four steel pipes of the upper group form the upper cantilever arm base hole, and the four steel pipes of the lower group form the lower cantilever arm base hole.

[0011] Furthermore, the connecting bar group includes two connecting bars, which are located on both sides of the steel pipe and connected to the steel pipe. The grounding bar of each connecting bar group is connected to any one of the connecting bars.

[0012] Furthermore, the cantilever base grounding structure also includes a grounding input terminal and a grounding output terminal. The grounding input terminal is located inside the concrete column body, between the two sets of steel pipes, and is connected to the grounding reinforcing steel. The grounding output terminal is located inside the concrete column body, at the bottom of the concrete column body and above the column base, and is connected to the grounding reinforcing steel and connected to the ground.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model can effectively improve the normal operating life of the ring support in the near-shore environment, and the ring support can operate normally in the near-shore environment with high corrosion levels of RC5 and RCX. It strengthens the overall wind and crack resistance of the support, improves the overall corrosion resistance of the support, ensures effective operation under the erosion of high density rainwater and seawater and strong wind environment, and reduces the need for on-site line maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the steel pipe assembly and connecting bar assembly of this utility model.

[0016] Among them, 1-concrete column body, 2-column base, 3-cantilever base grounding structure, 301-upper cantilever base hole, 302-lower cantilever base hole, 31-steel pipe assembly, 32-connecting bar assembly, 33-grounding bar, 34-grounding input terminal, 35-grounding output terminal. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 To the attached Figure 2The specific embodiments of this utility model will be described in detail below. In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] Example

[0020] like Figure 1 The diagram shows a high-corrosion-resistant ring-shaped support for the overhead contact line of a high-speed railway along the coast, comprising a concrete support body 1, a support base 2, and a cantilever base grounding structure 3.

[0021] The concrete support body 1 includes a steel reinforcement cage and concrete wrapped around the outside of the steel reinforcement cage. The concrete is corrosion-resistant fiber concrete. The support base 2 is located at the bottom of the concrete support body 1, and the support base 2 is covered with an anti-corrosion layer. The cantilever base grounding structure 3 includes two sets of steel pipe groups 31, two sets of connecting bar groups 32, and grounding bar 33. Each set of steel pipes includes multiple steel pipes, and each steel pipe is pre-embedded in the concrete support body 1. At least one end of the steel pipe penetrates through the side wall of the concrete support body 1 to form an installation hole for installing the cantilever base. Each set of connecting bar groups 32 is connected to multiple steel pipes of each set of steel pipe groups 31, and each set of connecting bar groups 32 includes at least one connecting bar. The grounding bar 33 is located inside the concrete support body 1, with one end connected to the connecting bars of the two sets of connecting bar groups 32 respectively, and the other end grounded.

[0022] In this embodiment, the support base 2 uses a flange. During use, the flange is fixed to the anchor bolts, and the double-layer bolt structure ensures the installation stability of the support base 2. The anchor bolts are pre-embedded in the ground foundation.

[0023] The main body 1 of the concrete column is cast using anti-corrosion fiber concrete, and the base 2 of the column is provided with an anti-corrosion layer to form an overall anti-corrosion protection.

[0024] The grounding structure 3 at the base of the cantilever arm effectively ensures the overall conductivity. Since the contact network is energized, the current is conducted to the ground through the grounding structure 3 at the base of the cantilever arm, effectively protecting the support column and other components installed on it.

[0025] Specifically, the steel pipe groups 31 are connected together using connecting reinforcement groups 32. After modularization, the entire assembly is connected to the grounding reinforcement 33, effectively achieving lightning protection grounding connectivity. It should be noted that the connection between the steel pipes and the connecting reinforcement, as well as the connection between the connecting reinforcement and the grounding reinforcement 33, are all achieved by welding.

[0026] Preferably, the main body 1 of the concrete column is a prestressed concrete column, and the concrete is basalt fiber concrete. Basalt fiber concrete has excellent crack resistance and corrosion resistance. Current marine engineering applications have proven that basalt fiber concrete can extend the service life of marine engineering by 20%-30%. Furthermore, prestressed concrete columns cast using basalt fiber concrete possess superior mechanical properties, including high load-bearing capacity, low deformation and crack resistance, and enhanced stiffness.

[0027] Preferably, the anti-corrosion layer includes a first anti-corrosion layer and a second anti-corrosion layer. The first anti-corrosion layer is wrapped around the outside of the support base 2 and is made of zinc plating. The second anti-corrosion layer is wrapped around the outside of the first anti-corrosion layer and is made of fluorocarbon coating.

[0028] Preferred, such as Figure 2 As shown, each group of steel pipes 31 includes four steel pipes. The two groups of steel pipes 31 are distributed in the upper half of the concrete support body 1, and the four steel pipes of the two groups of steel pipes 31 are distributed sequentially. The four steel pipes of the upper position of the steel pipe group 31 form the upper cantilever base hole 301, and the four steel pipes of the lower position of the steel pipe group 31 form the lower cantilever base hole 302.

[0029] Preferably, the connecting bar group 32 includes two connecting bars, which are located on both sides of the steel pipe and connected to the steel pipe. The grounding bar 33 of each connecting bar group 32 is connected to any one of the connecting bars.

[0030] Preferably, the cantilever base grounding structure 3 further includes a grounding input terminal 34 and a grounding output terminal 35. The grounding input terminal 34 is located inside the concrete support body 1, between the two sets of steel pipe groups 31, and is connected to the grounding reinforcing bar 33; the grounding output terminal 35 is located inside the concrete support body 1, at the bottom of the concrete support body 1 and above the support base 2, and is connected to the grounding reinforcing bar 33, and is connected to the ground.

[0031] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and does not limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.

Claims

1. A highly corrosion-resistant ring-shaped support for the overhead contact line of a high-speed coastal railway, characterized in that, include: The main body of the concrete column (1) includes a steel reinforcement cage and concrete wrapped around the outside of the steel reinforcement cage. The concrete is corrosion-resistant fiber concrete. The support base (2) is set at the bottom of the concrete support body (1), and the support base (2) is provided with an anti-corrosion layer on the outside; The cantilever base grounding structure (3) includes: two sets of steel pipe groups (31), each set of steel pipes includes multiple steel pipes, each steel pipe is pre-embedded in the concrete support body (1), and at least one end of the steel pipe penetrates through the side wall of the concrete support body (1) to form an installation hole, which is used to install the cantilever base; two sets of connecting bar groups (32), each set of connecting bar groups (32) is connected to multiple steel pipes of each set of steel pipe groups (31), and each set of connecting bar groups (32) includes at least one connecting bar; and grounding bar (33), which is set inside the concrete support body (1), with one end connected to the connecting bar of the two sets of connecting bar groups (32) respectively, and the other end grounded.

2. A high corrosion resistant catenary loop support for a high speed railway along a coastline according to claim 1, wherein The main body of the concrete column (1) is a prestressed concrete column, and the concrete is basalt fiber concrete.

3. A high corrosion resistant catenary loop support for high speed coastal railway lines as claimed in claim 1, wherein The anti-corrosion layer includes: The first anti-corrosion layer is wrapped around the outside of the support base (2), and the first anti-corrosion layer is a galvanized layer; The second anti-corrosion layer is wrapped around the outside of the first anti-corrosion layer, and the second anti-corrosion layer is made of fluorocarbon coating.

4. A high corrosion resistant catenary loop support for high speed coastal railway lines as claimed in claim 1, wherein Each group of steel pipes (31) includes 4 steel pipes. The two groups of steel pipes (31) are distributed in the upper half of the concrete support body (1). The 4 steel pipes of the two groups of steel pipes (31) are distributed in sequence. The four steel pipes of the upper steel pipe group (31) form the upper cantilever base hole (301), and the four steel pipes of the lower steel pipe group (31) form the lower cantilever base hole (302).

5. A high corrosion resistant catenary loop post for a high speed railway along a coastline according to claim 4, wherein The connecting bar group (32) includes two connecting bars, which are located on both sides of the steel pipe and connected to the steel pipe. The grounding bar (33) of each connecting bar group (32) is connected to any connecting bar.

6. A high-corrosion-resistant ring-shaped support for the overhead contact line of a high-speed railway along a coastline as described in claim 5, characterized in that, The wrist arm base grounding structure (3) also includes: The grounding input terminal (34) is set inside the concrete support body (1) and located between two sets of steel pipe groups (31). The grounding input terminal (34) is connected to the grounding steel bar (33). The grounding output terminal (35) is located inside the concrete support body (1), at the bottom of the concrete support body (1) and above the support base (2). The grounding output terminal (35) is connected to the grounding steel bar (33) and the grounding output terminal (35) is connected to the ground.

Images