A pedestrian railing for a bridge metal post guardrail

Abstract

The utility model relates to bridge engineering guardrail technical field discloses a kind of pedestrian rail for bridge metal upright guardrail. The pedestrian rail for bridge metal upright guardrail includes several vehicle guardrail uprights, and one side of each vehicle guardrail upright is equipped with half pedestrian rail, and the half pedestrian rail between adjacent vehicle guardrail uprights is spliced to constitute integral pedestrian rail by connecting sleeve, and unilateral free expansion can be realized at expansion joint. The utility model solves the problem that low-grade highway bridge guardrail has single function, complex installation, poor appearance and insufficient adaptability, has the characteristics of convenient construction, economic efficiency, safety and reliability, improves installation efficiency and maintenance convenience, and enhances the safety protection ability of pedestrians, ensures that the guardrail remains stable during bridge expansion deformation.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering guardrail technology, and in particular to a pedestrian railing for bridge metal column guardrails. Background Technology

[0002] In the design and construction of low-grade highway bridges, guardrails, as important safety facilities, are typically installed only on both sides of the bridge edge. These guardrails need to meet the safety needs of both vehicles and pedestrians. However, existing guardrail designs primarily focus on vehicular traffic, emphasizing safety after a vehicle collision, while neglecting the protection of pedestrian safety.

[0003] The current problems are mainly reflected in the following aspects:

[0004] 1. Limited functionality: Existing vehicle guardrails are designed only for vehicle collision protection and do not fully consider the function of preventing pedestrians from crossing or falling. Especially in low-grade highway bridges, pedestrian safety cannot be effectively guaranteed.

[0005] 2. Complex installation: When pedestrian railings need to be added to bridges, they usually need to be installed separately behind the vehicular guardrails. This construction method not only increases the safety risks of working near the edge, but also leads to low construction efficiency and significantly increased economic costs.

[0006] 3. Poor aesthetics: The independently installed pedestrian railings lack a unified design with the existing vehicular railings, resulting in an overall uncoordinated appearance and affecting the overall aesthetics of the bridge.

[0007] 4. Insufficient adaptability: In special locations such as bridge expansion joints, the existing guardrail structure is difficult to flexibly adapt to the expansion and contraction deformation of the bridge, which can easily lead to damage or failure of the guardrail.

[0008] In summary, the main technical problem in the current design of guardrails for low-grade highway bridges is: how to effectively improve the protection of pedestrian safety while ensuring vehicle safety, and to solve the problems of complex installation, poor aesthetics, and insufficient adaptability of traditional pedestrian guardrails. Utility Model Content

[0009] To address the aforementioned issues, this utility model provides a pedestrian railing for bridge metal column guardrails, which is compatible with existing vehicular metal column guardrails, offering convenient construction and high installation efficiency.

[0010] The technical solution adopted in this utility model is as follows:

[0011] A pedestrian railing for bridge metal column guardrails includes several vehicular guardrail columns, with a half-section of pedestrian railing installed on one side of each vehicular guardrail column. The half-sections of pedestrian railing between adjacent vehicular guardrail columns are spliced ​​together by connecting sleeves to form an integral pedestrian railing.

[0012] Furthermore, the vehicle guardrail post includes a metal base plate and a square steel tube post welded and fixed to the metal base plate.

[0013] Furthermore, the half-piece pedestrian railing includes a C-shaped outer frame made of square steel pipes welded together, and several vertical steel posts welded and fixed to the inside of the C-shaped outer frame.

[0014] Furthermore, the vehicle guardrail posts and pedestrian railings are connected by connectors; the connectors are metal plates bent into the shape of isosceles trapezoids, with their short base side connected to the pedestrian railings by bolts, and their long base side forming an outwardly extending connecting plate, which is welded and fixed to the vehicle guardrail posts.

[0015] Furthermore, the vehicle guardrail post and the pedestrian guardrail are connected by a connector; the connector is a threaded rod that passes through the vehicle guardrail post and half of the pedestrian guardrail, and nuts are installed at both ends of the threaded rod.

[0016] Furthermore, the connecting sleeve is installed on the upper and lower parts of the half of the pedestrian railing between adjacent vehicle guardrail posts; the connecting sleeve is a square steel pipe with a diameter smaller than that of the C-shaped outer frame, and its two ends are inserted into the two adjacent C-shaped outer frames, and one or both ends of the connecting sleeve are bolted to the C-shaped outer frame.

[0017] The beneficial effects of this utility model are:

[0018] 1. Improve pedestrian safety: The integrated design of the half-section pedestrian railing and the vehicle guardrail post effectively prevents pedestrians from crossing or falling, significantly improving the protection of pedestrian safety and solving the problem of the single function of traditional guardrails.

[0019] 2. Convenient and efficient construction: The pedestrian guardrails can be quickly connected to the existing vehicular guardrail posts via connectors, eliminating the need for additional safety measures for working near edges, greatly reducing construction difficulty and improving installation efficiency. The connecting sleeves use bolt connections, facilitating on-site assembly and shortening the construction cycle.

[0020] 3. Cost savings: Pedestrian railings are directly compatible with existing vehicle guardrails, avoiding the additional materials and complex procedures required for independent installation of pedestrian railings, thereby reducing construction costs and maintenance expenses.

[0021] 4. Enhanced Aesthetics: The pedestrian railings and vehicular railings are designed in a unified manner, resulting in a harmonious overall appearance that enhances the bridge's aesthetic appeal and meets the aesthetic requirements of modern bridge construction.

[0022] 5. High adaptability and reliability: The design of the connecting sleeve can flexibly adapt to the needs of special parts such as bridge expansion joints, ensuring that the guardrail maintains stability and functionality even when the bridge deforms, avoiding safety hazards caused by structural failure. The adjustable connection method further enhances the adaptability of the structure, meeting the installation requirements of different bridge environments.

[0023] 6. Stable structure and good durability: The pedestrian railing is made of welded steel structure with reasonable spacing between vertical steel posts. Combined with the design of C-shaped outer frame and connecting sleeve, the overall structure is more stable and can withstand various loads during long-term use.

[0024] 7. Modular design for easy maintenance: The half-section pedestrian guardrail and connecting sleeve adopt a modular design, which facilitates transportation, installation, and subsequent maintenance. In case of partial damage, the damaged parts can be quickly replaced, reducing repair time and costs. Attached Figure Description

[0025] Figure 1 This is a front view of a pedestrian railing used for bridge metal post guardrails;

[0026] Figure 2 A side view of a pedestrian railing used for bridge metal post guardrails;

[0027] Figure 3 A top view of a pedestrian railing used for bridge metal column guardrails;

[0028] Figure 4 This is a sectional view of the connection between the connecting sleeve and the pedestrian guardrail;

[0029] Figure 5 This is an enlarged schematic diagram of the connector.

[0030] Figure 6 This is a schematic diagram of the overall structure of the connector;

[0031] Figure 7 Installation diagram when a threaded rod is used for the connector;

[0032] Figure 8 This is a schematic diagram of the sleeve connection method at the bridge expansion joint;

[0033] In the diagram, 1—vehicle guardrail post, 2—half of a pedestrian guardrail, 3—connector, 31—connecting plate, 32—elliptical opening, 4—bolt, 5—connecting sleeve, 6—bolt. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] To address the problems existing in the current design of guardrails for low-grade highway bridges, this embodiment provides a pedestrian railing for bridge metal post guardrails; such as Figures 1 to 3 As shown, the pedestrian railing used for bridge metal column guardrails mainly includes a vehicle guardrail post 1, a half-piece pedestrian railing 2, and a connecting sleeve 5.

[0036] The specific structure is as follows:

[0037] like Figure 1 and Figure 3 As shown, the vehicle guardrail post 1 consists of a metal base plate and welded square steel pipes, with a half-section pedestrian guardrail 2 installed on its side. The half-section pedestrian guardrail 2 is made of square steel pipes welded into a C-shaped outer frame, and six vertical steel posts are welded inside. The spacing between the vertical steel posts is ≤14cm to ensure the function of preventing pedestrians from crossing or falling.

[0038] While ensuring structural strength, this embodiment does not use the traditional fully welded structure of pedestrian guardrail and vehicle guardrail post 1. Instead, it uses connector 3 to connect vehicle guardrail post 1 and half of pedestrian guardrail 2 to facilitate rapid construction.

[0039] Method 1: For example Figure 1 , Figure 5 and Figure 6 As shown, the connector 3 is a metal plate bent into the shape of an isosceles trapezoid. Its shorter base has an elliptical opening 32. A bolt 4 passes through the elliptical opening 32 and the half-piece of the pedestrian railing 2, connecting the connector 3 to the half-piece. The longer base of the connector 3 forms an outwardly extending connecting plate 31, which is welded to the side of the vehicle guardrail post 1, thus fixing the connector 3 to the vehicle guardrail post 1. Each half-piece of the pedestrian railing 2 can be quickly installed to the vehicle guardrail post 1 using two connectors 3.

[0040] Method 2: For example Figure 7 As shown, the connector 3 is a threaded rod that passes through the C-shaped outer frame of the vehicle guardrail post 1 and the two half-pieces of pedestrian guardrail 2 on both sides of the vehicle guardrail post 1. Nuts are installed at both ends of the threaded rod to prevent the two half-pieces of pedestrian guardrail 2 from slipping off.

[0041] Regarding the connection between the two half-panels of pedestrian guardrail 2, such as Figure 1, Figure 3 , Figure 4 As shown, in this embodiment, connecting sleeves 5 are installed at the upper and lower parts of the half-piece pedestrian railing 2 between adjacent vehicle guardrail posts 1, so that adjacent half-piece pedestrian railings 2 are spliced ​​together by connecting sleeves 5 to form an integral pedestrian railing. The connecting sleeve 5 is a square steel pipe with a diameter smaller than that of the C-shaped outer frame, and both ends of the connecting sleeve 5 are inserted into the two adjacent C-shaped outer frames and fixed by bolts 6.

[0042] In this embodiment, the pedestrian railing and connecting sleeve 5 can be connected in various ways according to the requirements of the bridge expansion joint;

[0043] Connection method 1: such as Figure 1 , Figure 2 and Figure 3 As shown, the two ends of the connecting sleeve 5 are inserted into the C-shaped outer frame of the adjacent half of the pedestrian railing 2, and the adjacent half of the pedestrian railing 2 is fixed by bolts 6 passing through the C-shaped outer frame and the connecting sleeve 5.

[0044] Connection method two: such as Figure 8 As shown, when pedestrian railings are installed across bridge expansion joints, only one side of the pedestrian railing 2 is bolted to the connecting sleeve 5 and fixed with bolts 6 according to the bridge's expansion and contraction requirements, while the other side can expand and contract freely. If connection method two is adopted, the length of the connecting sleeve 5 inserted into the C-shaped outer frame is greater than the maximum expansion and contraction amount designed for the expansion joint; at the same time, if the connecting part 3 is a threaded rod, the distance between the half-pedestrian railing 2 and the vehicle guardrail post 1 must be controlled to be less than the length of the connecting sleeve 5 inserted into the C-shaped outer frame to prevent the free expansion and contraction end of the connecting sleeve 5 from detaching.

[0045] Based on the aforementioned pedestrian railings for bridge metal post guardrails, taking a low-grade highway bridge as an example, during installation, the connector 3 is first welded to the side of the vehicular guardrail post 1. Then, the half-section of the pedestrian railing 2 is fixed to the connector 3 using bolts 4. The half-sections of the pedestrian railing 2 between adjacent posts are spliced ​​together into a whole using connecting sleeves 5, ensuring that the connecting sleeves 5 can freely expand and contract on one side at the expansion joints. The entire installation process is efficient and quick, and the modular design facilitates later maintenance.

[0046] This pedestrian railing for bridge metal post guardrails effectively prevents pedestrians from crossing or falling by using a design with half-panel pedestrian railings 2 and vertical steel post spacing ≤14cm, significantly improving pedestrian safety. The half-panel pedestrian railing 2 is quickly fixed to the existing vehicular guardrail post 1 via connector 3, eliminating the need for additional edge work, reducing construction difficulty, and improving installation efficiency. This pedestrian railing for bridge metal post guardrails integrates pedestrian and vehicular guardrails in a unified design, enhancing the overall aesthetics of the bridge. Furthermore, the single-sided free expansion and contraction design of the connecting sleeve 5 flexibly adapts to the expansion and contraction needs of the bridge, avoiding safety hazards caused by structural failure.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pedestrian railing for bridge metal post guardrails, characterized in that: The pedestrian railing used for bridge metal column guardrails includes several vehicular guardrail columns, with a half-section of pedestrian railing installed on one side of each vehicular guardrail column. The half-sections of pedestrian railing between adjacent vehicular guardrail columns are spliced ​​together by connecting sleeves to form an integral pedestrian railing.

2. The pedestrian railing of the bridge metal column guardrail according to claim 1, characterized in that: The vehicle guardrail post includes a metal base plate and a square steel tube post welded and fixed to the metal base plate.

3. The pedestrian railing of the bridge metal column guardrail according to claim 1, characterized in that: The half-section pedestrian railing includes a C-shaped outer frame made of welded square steel pipes, and several vertical steel posts welded and fixed to the inside of the C-shaped outer frame.

4. The pedestrian railing of the bridge metal column guardrail according to claim 1, characterized in that: The vehicle guardrail posts and pedestrian railings are connected by connectors; the connectors are metal plates bent into the shape of isosceles trapezoids, with their short bottom side connected to the pedestrian railings by bolts, and their long bottom side forming an outwardly extending connecting plate, which is welded and fixed to the vehicle guardrail posts.

5. The pedestrian railing of the bridge metal column guardrail according to claim 1, characterized in that: The vehicle guardrail posts and pedestrian railings are connected by connectors; the connectors are threaded rods that pass through the vehicle guardrail posts and half of the pedestrian railings, and nuts are installed at both ends of the threaded rods.

6. The pedestrian railing of the bridge metal column guardrail according to claim 3, characterized in that: The connecting sleeve is installed on the upper and lower parts of the half of the pedestrian guardrail between adjacent vehicle guardrail posts; the connecting sleeve is a square steel pipe with a diameter smaller than that of the C-shaped outer frame, and its two ends are inserted into the two adjacent C-shaped outer frames, and one or both ends of the connecting sleeve are bolted to the C-shaped outer frame.

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