Cavity UHPC prefabricated isolation guardrail

Abstract

The application relates to the technical field of isolation fences, in particular to a cavity UHPC prefabricated isolation fence. The cavity UHPC prefabricated isolation fence is composed of a plurality of fence connection groups, the fence is composed of UHPC, a hollow structure is arranged in the fence, and a plurality of adjacent fences are connected through splicing; one side of a single fence is provided with an A plate, the other side is provided with a B plate, the A plate and the B plate of adjacent fences are vertically clamped and limited; the adjacent fences are provided with a limiting convex and a limiting groove for transverse clamping and limiting. The cavity UHPC prefabricated isolation fence provided by the application has the characteristics of wind resistance stability, high durability, light structure weight and the like.

Description

Technical Field

[0001] This application relates to the field of isolation barrier technology, and in particular to a cavity UHPC prefabricated isolation barrier. Background Technology

[0002] In the current implementation of temporary road traffic enclosure, semi-permanent enclosure, diversion and isolation in the transportation industry, traffic cones, plastic water barriers and ordinary concrete stone barriers are mostly used. The above three products have the following drawbacks: (1) Traffic cones have poor structural stability and are easily tipped over by wind or vehicle airflow. The material durability is insufficient. (2) Plastic water barriers have insufficient impact resistance, are easily damaged, have poor stability, and are easily tipped over. When the wind force is ≥6 (10.8m / s), the tipping rate is greater than 30%. (3) Ordinary C20 concrete stone barriers have a heavy structure, high transportation and installation costs, insufficient durability, are prone to cracking and peeling outdoors, have a large amount of concrete, and high carbon emissions.

[0003] This demonstrates that existing isolation products in related technologies have significant shortcomings. Utility Model Content

[0004] In order to overcome the shortcomings of related technologies, this application provides a cavity UHPC prefabricated isolation guardrail.

[0005] A prefabricated isolation barrier made of UHPC (Ultra-High-Pressure Polymer) is composed of multiple interconnected barriers. The barriers are made of UHPC and have a hollow structure inside. Multiple adjacent barriers are connected by splicing. Each barrier has an A plate on one side and a B plate on the other side. The A plates and B plates of adjacent barriers are vertically locked together for positioning. Each barrier has a limiting groove at one end and a limiting protrusion at the other end. The limiting protrusions and limiting grooves of adjacent barriers are horizontally locked together for positioning. Furthermore, the guardrail is configured as a convex or L-shaped guardrail; the hollow structure is configured as a convex or L-shaped hollow structure.

[0006] Furthermore, both board A and board B are designed as polygonal shapes.

[0007] Furthermore, the A and B plates are made of plastic or steel, and are fixed to the inner wall of the hollow structure of the guardrail by pre-embedded bolts.

[0008] Furthermore, multiple positioning plates are provided at the outer corners of the fold lines of plates A and B.

[0009] Furthermore, multiple perforations are provided on plates A and B for inserting weight-adding rods.

[0010] Furthermore, the bottom is provided with multiple drainage channels.

[0011] Furthermore, the positioning plate is made of angle steel, and the angle steel on plates A and B are vertically interlocked when plates A and B are spliced ​​together.

[0012] Furthermore, a mounting groove is provided at the top of the guardrail.

[0013] Furthermore, at least one counterweight cavity is provided at the bottom of the guardrail.

[0014] This application has at least one of the following beneficial effects: 1. This application provides a cavity UHPC prefabricated isolation guardrail with characteristics such as wind resistance stability, high durability, and lightweight structure.

[0015] 2. This application utilizes ultra-high performance concrete (UHPC) and optimizes the structural design, ensuring structural stability to meet wind resistance requirements while improving product durability. Simultaneously, it simplifies and expedites transportation and installation, significantly reducing installation equipment and labor costs. This effectively lowers maintenance costs and enhances traffic safety and environmental friendliness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the A-plate structure according to an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the B-plate structure according to an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the overall mating connection structure of an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the drainage channel and installation channel structure according to an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the counterweight cavity structure according to an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the embedded bolts in an embodiment of this application.

[0022] Attached reference numerals: 1. Plate A; 2. Plate B; 3. Limiting protrusion; 4. Limiting groove; 5. Perforation; 6. Weighting rod; 7. Counterweight cavity; 8. Drainage groove; 9. Mounting groove; 10. Positioning plate; 11. Mounting plate; 12. Embedded bolt. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] Example 1 Reference Figure 1 , Figure 2 and Figure 3 A hollow UHPC prefabricated isolation fence is disclosed, composed of multiple interconnected fences. The fences are prefabricated in one piece using ultra-high performance concrete (UHPC) through a mold. The fence material design uses UHPC120-UHPC150 ultra-high performance concrete, with the main material composition as follows: 40%-50% silicate cement, 25%-35% quartz sand, 3%-5% nano-silica, 1%-2% steel fiber, 0.5%-1% polymer anti-permeability agent, 0.3%-0.5% water-reducing agent, and the remainder water. The fence has a hollow internal structure, which can significantly reduce material usage and production costs, while allowing for the passage of power and communication cables. Multiple adjacent fences are connected by splicing; each fence has an A plate 1 on one side and a B plate 2 on the other side, with the A plates 1 and B plates 2 of adjacent fences vertically interlocked for restraint. The guardrails are designed as convex or L-shaped railings; the hollow structure is designed as a convex or L-shaped perforated structure. The guardrails are designed with a thin-walled structure, with an overall height of 0.4m to 1.1mm, adjustable according to actual needs. The guardrail length is designed in segments, with segment lengths of 0.5m to 1.5m, also adjustable according to actual needs. The thickness of the hollow UHPC prefabricated isolation guardrail is 3cm to 5cm, reducing concrete usage by 40% to 60% and weight by 40% to 60% compared to traditional ordinary concrete barriers of the same cross-section, simplifying transportation and installation requirements and reducing transportation and installation costs. Furthermore, under wind conditions ≥12 (36.9m / s), the hollow UHPC prefabricated isolation guardrail can meet the overturning resistance coefficient requirements based solely on its own weight, improving stability several times compared to traditional traffic cones and plastic water-filled barriers, significantly enhancing driving safety.

[0028] Both plate A1 and plate B2 are designed with a zigzag shape. Plate A1 and plate B2 are made of plastic or steel, and are fixed to the inner wall of the hollow structure of the guardrail using pre-embedded bolts 12. (Refer to...) Figure 6 For example, the top of plate B2 has an outward-folding mounting plate 11, on which two pre-embedded bolts 12 are provided to fix plate B2. The mounting plate 11 at the bottom of plate B2 folds inward. Optionally, the mounting plates at the top and bottom of plates A1 and B2 can be configured to fold inward or outward, and the mounting plates 11 at corresponding positions of plates A1 and B2 can be configured to fold in opposite directions. A limit groove 4 is provided at one end of a single guardrail, and a limit protrusion 3 is provided at the other end. The limit protrusion 3 and the limit groove 4 of adjacent guardrails are horizontally engaged for limiting. The unique splicing structure design of this application can not only strengthen the connection between segments and increase stability and safety, but also facilitate replacement, transfer, and dismantling. The limit groove 4 and the limit protrusion 3 serve both as guides and as reinforcements for the connection.

[0029] Plate A1 and Plate B2 fit together perfectly, and multiple positioning plates 10 are provided at the outer corners of the fold lines of Plate A1 and Plate B2. In this embodiment, the positioning plates 10 are angle steel. When Plate A1 and Plate B2 are spliced, the angle steel on Plate A1 and Plate B2 is vertically interlocked. The angle steel serves as a guide, but more importantly, it can interlock, support, and reinforce, and greatly enhance the overall rigidity.

[0030] Multiple through holes 5 are provided on the A plate 1 and B plate 2 for inserting the weight-adding rods 6. The weight-adding rods 6 are steel reinforcement weight-adding rods 6.

[0031] Reference Figure 4 The guardrail has a mounting slot 9 at the top for inserting a connecting pin or connecting rod; the connecting rod is used to install external devices for road ancillary facilities such as warning lights, signs, and surveillance cameras. The guardrail can be equipped with appropriate colors, such as gray or yellow, depending on the usage scenario.

[0032] Reference Figure 5 The counterweight cavity 7 is a through cavity or independent chamber located at the bottom of the guardrail body. Preferably, the counterweight cavity 7 is filled with counterweights, which are dry sand, metal particles, or water. This is used to cope with special situations such as extreme weather or disasters.

[0033] Multiple drainage channels 8 are provided on the side of the guardrail. At least one drainage channel 8 is opened at the bottom of the counterweight chamber 7, and the opening is covered with a removable stainless steel filter screen to prevent debris from clogging it. Sealing end caps with waterproof rubber rings are provided at both ends of the counterweight chamber 7, which facilitates the filling of sand and gravel for counterweight and makes it easy to clean the inside of the chamber in the future.

[0034] This application has a simple structure and is easy and quick to operate. The guardrail units are quickly connected through plate A1 and plate B2, and no tools are required during the installation process.

[0035] This application utilizes the high strength, high durability, and corrosion resistance of ultra-high performance concrete (UHPC) to significantly improve the durability of guardrails, increase their service life, and avoid the risks to traffic caused by traditional concrete spalling. Furthermore, in terms of energy conservation and emission reduction, it extends product lifespan, reduces concrete usage, and significantly lowers product carbon emissions. Factory prefabrication reduces on-site work, noise, and pollution, aligning with green building principles.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated isolation barrier made of hollow UHPC, characterized in that, Composed of multiple guardrails connected together, the guardrails are made of UHPC and have a hollow structure inside. Multiple adjacent guardrails are connected by splicing. Each guardrail has an A plate (1) on one side and a B plate (2) on the other side. The A plates (1) and B plates (2) of adjacent guardrails are vertically locked and limited. Each guardrail has a limit groove (4) at one end and a limit protrusion (3) at the other end. The limit protrusion (3) and limit groove (4) of adjacent guardrails are horizontally locked and limited.

2. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, The guardrail is configured as a convex or L-shaped guardrail; the hollow structure is configured as a convex or L-shaped hollow structure.

3. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, Both plate A (1) and plate B (2) are set to a broken line shape.

4. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, The materials of plate A (1) and plate B (2) are set to plastic or steel. Plate A (1) and plate B (2) are fixed to the inner wall of the hollow structure of the guardrail by pre-embedded bolts (12).

5. The prefabricated UHPC cavity isolation barrier according to claim 3, characterized in that, Multiple positioning plates (10) are provided at the outer corners of the broken lines of plates A (1) and B (2).

6. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, The A plate (1) and B plate (2) are provided with multiple through holes (5) for inserting weight-adding rods (6).

7. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, The bottom of the guardrail is provided with multiple drainage channels (8).

8. The prefabricated UHPC cavity isolation barrier according to claim 5, characterized in that, The positioning plate (10) is set as angle steel. When the A plate (1) and the B plate (2) are spliced, the angle steel on the A plate (1) and the B plate (2) are vertically clamped together.

9. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, The top of the guardrail is provided with an installation slot (9).

10. The prefabricated UHPC cavity isolation barrier according to claim 1, characterized in that, At least one counterweight cavity (7) is provided at the bottom of the guardrail.

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