Novel metal anti-throwing and guardrail structure of overcrossing railway pedestrian overpass

Abstract

The utility model relates to the technical field of bridge ancillary facilities, in particular to a novel metal anti-throwing and guardrail structure of an over-crossing railway pedestrian overpass, which comprises steel upright posts with U-shaped sections and anti-throwing plates, a plurality of steel upright posts are respectively and fixedly mounted on a bridge floor at certain intervals, and the anti-throwing plates are fixedly mounted between adjacent steel upright posts. A reserved hole used for installing a bridge guardrail or a barrier-free handrail is formed in the side face of the steel stand column. The utility model has the advantages of convenience in field implementation, good structural integrity and safety, good durability, simplicity and convenience in repair and maintenance and good landscape property.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge auxiliary facilities, in particular to a novel metal anti-throwing and guardrail structure for a pedestrian overpass spanning a railway. Background Technique

[0002] According to the relevant requirements of the railway department, strong anti-throwing nets (plates) must be installed on both sides of the highways and municipal bridges spanning railways for vertical isolation and enclosure to prevent objects thrown from the bridge from falling onto the railway line and causing safety accidents. The anti-throwing nets on both sides of traditional pedestrian overpasses spanning railways mostly consist of steel columns and intermediate anti-throwing net sheets, which are generally installed on the outermost side of the bridge deck. The steel columns of the anti-throwing nets are generally fixed on the bridge deck with steel members such as round steel pipes, square steel pipes or H-shaped steel. The surfaces of the steel columns are treated with hot-dip galvanizing and dip coating for rust prevention, and the longitudinal spacing is generally set at about 2m. The anti-throwing net sheets are generally woven from low-carbon steel wires through zinc dipping and plastic dipping processes and are fixed on the steel columns through various connecting pieces. The bridge deck guardrails and handrails are generally independently arranged from the anti-throwing nets and are installed inside the anti-throwing nets.

[0003] Traditional anti-throwing nets and guardrails have the advantages of simple installation and low cost, but there are also quite a few deficiencies. First of all, the zinc-dipped and plastic-dipped low-carbon steel wires used for the anti-throwing net sheets have the disadvantages of low durability and poor appearance effect. Long-term exposure in the outdoor environment will cause problems such as peeling of the plastic dipping layer and rusting of the steel wires, resulting in a short service life and affecting the bridge and urban landscape. Secondly, the anti-throwing nets are erected outside the guardrails, making it inconvenient for daily inspection and maintenance, and it is difficult to detect the diseases of the anti-throwing nets. Finally, the anti-throwing nets and guardrails are independently arranged, and the anti-throwing nets are located outside the guardrails. Once the diseases of the anti-throwing net columns are not detected in time, they are likely to break and overturn onto the railway line in bad weather, causing major safety accidents. Summary of the Invention

[0004] The purpose of the utility model is to provide a novel metal anti-throwing and guardrail structure for a pedestrian overpass spanning a railway according to the deficiencies of the above-mentioned existing technologies. By adopting a combined structure of steel columns and anti-throwing plates and further optimizing, the deficiencies in safety, durability, practicality, aesthetics, etc. of the traditional technology are solved, and good social and economic benefits are generated.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A novel metal anti-throwing and guardrail structure for a pedestrian overpass spanning a railway, characterized in that: it includes steel columns with a U-shaped cross-section and anti-throwing plates. Among them, several of the steel columns are respectively fixed and installed on the bridge deck at a certain distance interval, the anti-throwing plates are fixed and installed between the adjacent steel columns, and reserved openings for installing bridge guardrails or barrier-free handrails are arranged on the side surfaces of the steel columns.

[0007] A column base is arranged at the bottom of the steel column along the direction of the bridge, the column base is welded to the bridge deck, and the steel column is welded to the column base.

[0008] The anti-throwing plate is assembled from a plurality of aluminum veneers arranged vertically, and the side edges of the aluminum veneers are folded and bolted to the side edges of the steel columns.

[0009] The bolt connection adopts a connecting bolt and a double-stacked self-locking anti-loosening gasket and a double-nut structure, and the double nut and the double-stacked self-locking anti-loosening gasket are both located on the inner side of the U-shaped opening of the steel column.

[0010] The upper and lower side edges of the aluminum single plate are both folded.

[0011] The guardrail or the barrier-free handrail is made of a steel pipe, and the steel pipe passes through and is fixed at the reserved opening positions at the corresponding positions opened on the plurality of steel columns.

[0012] The U-shaped opening of the steel column is closed by means of a bayonet or a bolt connection.

[0013] The advantages of the utility model are:

[0014] 1) Convenient on-site implementation: Compared with the traditional anti-throwing net and guardrail which adopt two independent structures, the utility model adopts an integrated anti-throwing and guardrail structure, and all the connecting parts are located on the inner side of the bridge deck, which is convenient for on-site installation.

[0015] 2) Good structural integrity and safety: The U-shaped stainless steel columns and aluminum panels used in the utility model have the characteristics of high structural strength and good durability. There are fewer other parts and components. Welding, high-strength anti-loosening bolts and other connection methods are used on site. The degree of integration is high, which can ensure the overall safety of the structure.

[0016] 3) Good durability and easy maintenance: The steel components used in the utility model are basically made of stainless steel structure, which has high durability. The perforated aluminum plate adopts fluorocarbon anti-corrosion coating, which has good durability. The connecting bolts are all located in the opening of the U-shaped steel toward the inner side of the bridge deck, and are usually closed for protection and convenient maintenance.

[0017] 4) Good landscape: The utility model adopts stainless steel and perforated aluminum veneer, which has good durability and is not easy to corrode; the structure has good integrity, simple and beautiful appearance, and has a good urban landscape effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic elevation diagram of the anti-throwing plate structure in the utility model;

[0019] Figure 2 This is a schematic elevation diagram of the guardrail structure in the utility model;

[0020] Figure 3 Partial plan structure diagram of the utility model (at the guardrail);

[0021] Figure 4 Partial plan structure diagram of the utility model (at the barrier-free handrail);

[0022] Figure 5 Side structure diagram of the utility model. Specific implementation manners

[0023] The features of the utility model and other related features are further described in detail below with reference to the accompanying drawings through embodiments for the understanding of those skilled in the same industry:

[0024] As Figures 1-5 shown, the markings 1-8 and A, B in the figure respectively represent: steel column 1, column base 2, aluminum single plate 3, connecting bolt assembly 4, barrier-free handrail 5, railing 6, horizontal railing 7, vertical railing 8, inside of the bridge A, outside of the bridge B.

[0025] Embodiment: As Figures 1 to 5 shown, the new metal anti-throwing and guardrail structure of the overpass railway pedestrian bridge in this embodiment specifically includes the following structures:

[0026] Combined with Figure 1 and Figure 5 shown, a steel column 1 is arranged on both sides of the bridge deck of the pedestrian bridge at intervals of about 1.5 - 2.0 m. The steel column 1 is a stainless steel column with a U-shaped cross-section. A steel structure column base 2 is arranged along the longitudinal direction of the bridge deck at the bottom of the steel column 1. The column base 2 is welded and fixed to the bridge deck of the main bridge. The steel column 1 and the column base 2 are connected by welding, so as to realize the fixation between the steel column 1 and the bridge deck of the pedestrian bridge. In this embodiment, the U-shaped opening side of the steel column 1 faces the inside of the bridge deck for the convenience of structure installation.

[0027] Combined with Figure 1 and Figure 3 shown, an anti-throwing plate is arranged between adjacent steel columns 1. The anti-throwing plate can play a role in preventing throwing and avoid sundries from falling into the railway line. In this embodiment, the anti-throwing plate is assembled vertically by a plurality of aluminum single plates 3. After the side edges of each aluminum single plate 3 are folded, they are fixedly bolted to the side of the steel column 1 by a connecting bolt assembly 4.

[0028] In this embodiment, the connecting bolt assembly 4 includes a connecting bolt, a double-stack self-locking anti-loosening gasket, and a double-nut combination. The nut and the gasket are both located inside the U-shaped opening of the steel column 1 to effectively protect the connecting bolt assembly 4. In some cases, the upper and lower sides of the aluminum single plate 3 are flanged to enhance the overall stiffness of the plate body. The aluminum single plate 3 is a perforated aluminum plate, and the arrangement of its mesh is considered comprehensively in combination with structural strength, railway technical requirements, landscape design, etc. After the aluminum single plate 3 is processed, its outer surface is fluorocarbon sprayed to enhance its anti-corrosion and durability.

[0029] Combined with Figures 2 to 5 As shown, according to the installation requirements of the bridge guardrail 6 and the barrier-free handrail 5, openings are reserved at corresponding positions on the side of the steel column 1. Both the guardrail 6 and the barrier-free handrail 5 are made of stainless steel pipes. After the steel column 1 and the anti-throwing plate (aluminum single plate 3) are installed on the bridge deck, they are passed through and fixed from the openings reserved in each steel column 1.

[0030] In this embodiment, combined with Figure 2 and Figure 3 As shown, the guardrail 6 is composed of a horizontal railing 7 and a vertical railing 8. The horizontal guardrail 7 is a stainless steel pipe passed through and fixed from the opening reserved on the steel column 1, while the vertical railing 8 is a stainless steel pipe arranged between the upper and lower horizontal guardrails 7. During installation, it can be assembled by reserving positions on the horizontal railing 7 and installing the vertical railing 8 after the horizontal railing 7 is installed, or the horizontal guardrail 7 and the vertical railing 8 can be divided into several modules along the longitudinal direction of the bridge to install the guardrail 6 in a modular manner.

[0031] For the protection of the connecting bolt assembly 4 and for aesthetic needs, after the anti-throwing plate and the guardrail 6 are installed, the U-shaped opening on the inner side of the steel column facing the bridge deck is closed with a stainless steel plate or other materials by means of snap-fastening or bolting. It can be temporarily opened for convenient maintenance during later maintenance.

[0032] Although the above embodiments have described in detail the concept and embodiments of the purpose of the present invention with reference to the accompanying drawings, those of ordinary skill in the art can recognize that various improvements and transformations can still be made to the present invention without departing from the scope defined by the claims. Therefore, they are not elaborated one by one here.

Claims

1. A new type of metal anti-throw and guardrail structure for a pedestrian bridge over a railway, characterized by: It includes steel columns with U-shaped cross-sections and anti-throw plates, wherein several of the steel columns are fixedly installed on the bridge deck at a certain interval, the anti-throw plates are fixedly installed between adjacent steel columns, and reserved openings for installing bridge guardrails or barrier-free handrails are provided on the sides of the steel columns.

2. According to claim 1, a new metal anti-throw and guardrail structure for a pedestrian bridge over a railway, characterized in that: A column base is arranged at the bottom of the steel column along the direction of the bridge, the column base is welded to the bridge deck, and the steel column is welded to the column base.

3. According to claim 1, a new metal anti-throw and guardrail structure for a pedestrian bridge over a railway, characterized in that: The anti-throwing plate is assembled from a plurality of aluminum veneers arranged vertically, and the side edges of the aluminum veneers are folded and bolted to the side edges of the steel columns.

4. According to claim 3, a new metal anti-throw and guardrail structure for a pedestrian bridge over a railway is characterized by: The bolt connection adopts a connecting bolt and a double-stacked self-locking anti-loosening gasket and a double-nut structure, and the double nut and the double-stacked self-locking anti-loosening gasket are both located on the inner side of the U-shaped opening of the steel column.

5. According to claim 3, the new metal anti-throw and guardrail structure for a pedestrian bridge over a railway is characterized by: The upper and lower side edges of the aluminum single plate are both folded.

6. The novel metal anti-throw and guardrail structure for a pedestrian bridge over a railway according to claim 1 is characterized in that: The guardrail or the barrier-free handrail is made of a steel pipe, and the steel pipe passes through and is fixed at the reserved opening positions at the corresponding positions opened on the plurality of steel columns.

7. The new metal anti-throw and guardrail structure for a pedestrian bridge over a railway according to claim 1 is characterized by: The U-shaped opening of the steel column is closed by means of a bayonet or a bolt connection.

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