Concrete retaining wall coping structure

Abstract

The utility model discloses a concrete retaining wall coping structure which can improve the connection stability of a coping and a concrete retaining wall, can prevent the coping and an anti-collision guardrail from falling off together when the anti-collision guardrail is collided, improves the road driving safety, and is beneficial to keeping the integrity of the coping and retaining wall structure. The concrete retaining wall coping structure comprises a coping, the coping comprises a wall top section and a wall back section, the wall top section is arranged at the top of a retaining wall, the bottom face of the wall top section makes contact with the top face of the retaining wall, the two ends of the wall top section horizontally extend out of the retaining wall, and the wall back section is arranged on the wall back of the retaining wall. The top face of the wall back section is integrally connected with the bottom face, extending out of the retaining wall, of the wall top section.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, and in particular to a concrete retaining wall capping structure. Background Technology

[0002] Retaining walls are usually installed along riverbanks or other adjacent areas of roads to support the roadbed fill or hillside soil, preventing soil deformation and instability at the road edge. The top of the retaining wall is usually capped, which can enhance the integrity and stability of the wall structure, prevent the top blocks from loosening and falling off due to weathering, collisions, etc., and prevent cracks from forming in the retaining wall. In some cases, the capping can also be connected to the crash barrier to improve road safety.

[0003] The coping of existing retaining walls is usually made by pouring fine aggregate concrete on the top surface of the retaining wall, such as... Figure 1 As shown, the bottom surface of the capping 1 contacts the top surface of the retaining wall 2, and its thickness is generally 50~200mm. The upper part of the capping 1 is connected to the guardrail 3. This structure has the following problems: Since the capping 1 contacts the top surface of the retaining wall 2 through its bottom surface, when an accident occurs on the road surface, the guardrail 3 is impacted. If the impact force is large, the guardrail 3 itself will fall off the capping 1, or the guardrail 3 will pull the capping 1 to fall off the retaining wall 2 together, which will affect road traffic safety, damage the structural integrity of the capping 1 and the retaining wall 2, and increase the maintenance cost of the capping 1 and the retaining wall 2. Utility Model Content

[0004] One of the objectives of this utility model is, at least, to provide a concrete retaining wall capping structure that can improve the stability of the connection between the capping and the concrete retaining wall, prevent the capping and the guardrail from falling off together when the guardrail is impacted, improve road traffic safety, and also help maintain the integrity of the capping and retaining wall structure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model includes the following aspects.

[0006] A concrete retaining wall capping structure includes: a capping, the capping including a top section and a back section, the top section being disposed on the top of the retaining wall, the bottom surface of the top section contacting the top surface of the retaining wall, both ends of the top section extending horizontally out of the retaining wall, the back section being disposed on the back of the retaining wall, the top surface of the back section being integrally connected to the bottom surface of the top section extending out of the retaining wall.

[0007] Preferably, the capping is a reinforced concrete structure, and two layers of parallel main reinforcement bars are provided in both the top section and the back section of the wall. The main reinforcement bars in the top section and the main reinforcement bars in the back section are connected to form an integral structure by the same stirrup.

[0008] Preferably, the retaining wall is provided with connecting ribs, which extend upward from the retaining wall into the capping.

[0009] Preferably, the connecting bar includes a vertical bar, the top and bottom of which are vertically connected to a horizontal bar, the top and bottom horizontal bars of which extend in the same direction, and the horizontal bar at the top of the vertical bar is located within the reinforcing steel skeleton of the capping, and is connected to the reinforcing steel skeleton and the capping concrete to form an integral structure.

[0010] Preferably, the backfill soil on the back side of the retaining wall forms a road surface from bottom to top, and the road surface is backfilled to the top section of the wall, with drainage grooves spaced at intervals along the length of the top section of the wall.

[0011] Preferably, the bottom of the top section of the wall is provided with a first protrusion and / or the contact surface between the back section of the wall and the back of the wall is provided with a second protrusion.

[0012] Preferably, the cross-section of the top section of the wall is a right trapezoid, the length of the bottom surface of the top section extending beyond the back of the wall is 20cm, and the height of the top section is 30cm; the cross-section of the back section of the wall is a parallelogram, the vertical height d1 of the back section is 30cm, and the horizontal width d2 of the back section is 20cm.

[0013] Preferably, the top surface of the wall top section is provided with a connecting seat, the anti-collision guardrail is installed on the connecting seat, the bottom of the vertical guardrail of the anti-collision guardrail is provided with a base, the base is connected to the connecting seat, and the connecting seat is pre-embedded in the wall top section.

[0014] Preferably, multiple reinforcing ribs are evenly arranged circumferentially at the connection between the bottom of the vertical guardrail and the base.

[0015] Preferably, the vertical guardrail is provided with multiple support members in the height direction. The support members are L-shaped. The first side of the support member is fixedly connected to the vertical guardrail. The second side of the support member is used to support the horizontal guardrail. The horizontal guardrail and the second side of the support member are detachably connected by a bolt assembly.

[0016] In summary, by adopting the above technical solution, this utility model has at least the following beneficial effects:

[0017] By configuring the retaining wall's coping as a top section and a back section, with the top section located at the top of the retaining wall and the back section at the back, and connecting the top and back sections integrally, the contact area between the coping and the retaining wall can be increased, enhancing the structural strength of the coping and improving the overall integrity and stability of both the coping and the retaining wall. When the crash barrier on the top section is impacted, it transfers the impact force to the coping structure. Since the back section of the coping is located on the back of the retaining wall, the retaining wall exerts a reaction force on the back section, preventing the coping and crash barrier from shifting, ensuring the stability of the coping and crash barrier at the top of the retaining wall, preventing the coping and crash barrier from falling off together, improving road driving safety, and reducing the maintenance costs of the coping and retaining wall on the road. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an existing concrete retaining wall coping structure.

[0019] Figure 2 This is a schematic diagram of a concrete retaining wall capping structure according to an exemplary embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of a concrete retaining wall capping structure, which is another exemplary embodiment of this utility model.

[0021] The diagram is labeled as follows: 1-Coping, 101-Top section of wall, 102-Back section of wall, 2-Retaining wall, 201-Back of wall, 202-Wall surface, 3-Bumper guardrail, 301-Vertical guardrail, 302-Horizontal guardrail, 4-Drainage hole, 5-Stirrup, 6-Main reinforcement, 7-Connecting reinforcement, 701-Vertical reinforcement, 702-Horizontal reinforcement, 8-Base, 9-Stiffening plate, 10-Connecting seat, 11-Road surface, 12-Supporting component, 13-First protrusion, 14-Second protrusion. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the purpose, technical solution and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figure 2 As shown, the concrete retaining wall capping structure of the exemplary embodiment of this utility model includes a capping 1, which includes a top section 101 and a back section 102. The top section 101 is disposed on the top of the retaining wall 2, and the bottom surface of the top section 101 is in contact with the top surface of the retaining wall 2. Both ends of the top section 101 extend horizontally out of the retaining wall 2. The back section 102 is disposed on the back 201 of the retaining wall 2, and the top surface of the back section 102 is integrally connected to the bottom surface of the top section 101 extending out of the retaining wall 2.

[0024] The concrete retaining wall capping structure of this utility model is provided with a top section 101 and a back section 102, which are integrally connected to form a whole structure. The back section 102 is set on the back of the retaining wall 201, which increases the contact area between the capping 1 and the retaining wall 2. When the anti-collision guardrail 3 on the capping 1 is impacted, the anti-collision guardrail 3 will cause the capping 1 to shift towards the wall 202. Since the back section 102 of the capping 1 is located on the back of the wall 201, the retaining wall 2 will prevent the capping 1 from shifting, thereby improving the stability of the capping 1 and the anti-collision guardrail 3 on the retaining wall 2 and improving road traffic safety.

[0025] The capping 1 is a reinforced concrete structure. Both the top section 101 and the back section 102 have two layers of parallel main reinforcement bars 6. The main reinforcement bars 6 in the top section 101 and the back section 102 are connected by the same stirrups 5 to form an integral structure, ensuring the integrity of the internal steel reinforcement skeleton of the capping 1, improving its structural strength and impact resistance. Furthermore, the diameter of both the stirrups 5 and the main reinforcement bars 6 is 12-20mm, and the spacing between adjacent stirrups 5 on the main reinforcement bars 6 is 20-30cm. The protective layer thickness of the capping 1 is 4-5cm, which effectively protects the internal steel reinforcement skeleton from corrosion when the capping 1 comes into contact with soil, water, or air.

[0026] In a preferred embodiment of this utility model, the cross-section of the top section 101 is generally a right trapezoid, the length of the top section 101 extending beyond the wall surface 202 is 5cm, the length of the bottom surface of the top section 101 extending beyond the back section 201 is 20cm, and the height of the top section 101 is 30cm; the cross-section of the back section 102 is a parallelogram, the vertical height d1 of the back section 102 is 30cm, and the horizontal width d2 is 20cm. The cross-sections of the top section 101 and the back section 102 can also vary according to the specific cross-sectional shape of the retaining wall 2.

[0027] The retaining wall 2 can be constructed using masonry or concrete. The retaining wall 2 is equipped with connecting bars 7, which extend upwards from the retaining wall 2 into the capping 1. The connecting bars 7 can enhance the integrity of the connection structure between the capping 1 and the retaining wall 2 and improve the stability of the connection between the capping 1 and the retaining wall 2. The length of the connecting bars 7 in the retaining wall 2 is greater than the vertical height d1 of the wall back section 102. The connecting bars 7 include vertical bars 701, and the top and bottom of the vertical bars 701 are vertically connected to horizontal bars 702. The horizontal bars 702 at the top and bottom of the vertical bars 701 extend in the same direction. The horizontal bars 702 at the top of the vertical bars 701 are located within the steel reinforcement cage of the capping 1 and are connected with the steel reinforcement cage and the concrete of the capping 1 to form an integral structure. During application, the connecting bar 7 can be connected to the top section 101 of the retaining wall 2 and the coping 1 (at this time, the connecting bar is set vertically), or the connecting bar 7 can be connected to the back section 102 of the retaining wall 2 and the coping 1 (at this time, the connecting bar is set at an angle), or the connecting bar 7 can be connected to the top section 101 of the retaining wall 2 and the back section 102 of the retaining wall 2 respectively.

[0028] The retaining wall 2's backfill side 201 forms a road surface 11 from bottom to top, extending to the top section 101 of the wall. The soil beneath the road surface 11 exerts lateral pressure on the top section 101 and the back section 102, further improving the integrity and stability of the connection between the capping 1 and the retaining wall 2. Drainage channels (not shown in the figure) are also provided at intervals (10-15m) along the length of the top section 101. These channels are 10-15cm wide and can drain water from the road surface 11 into the river or other drainage facilities on the side of the wall 201, preventing water accumulation on the road surface 11. When setting up the retaining wall structure, it can be combined with... Figure 1 Similar to the retaining wall structure, drainage holes are inclinedly installed inside the retaining wall to facilitate the drainage of water accumulated in the soil.

[0029] A connecting seat 10 is provided on the top surface of the top section 101 of the wall. The crash barrier 3 is set on the connecting seat 10. During the installation of the crash barrier 3, the connecting seat 10 can improve the linearity of the installation of the crash barrier 3 and reduce the installation difficulty of the crash barrier 3. The connecting seat 10 can be pre-embedded in the top section 101 of the wall during the construction of the top section 101 to improve the stability of the connection between the connecting seat 10 and the top section 101 of the wall. The bottom of the vertical guardrail 301 of the crash barrier 3 is provided with a base 8. The base 8 can be welded to the connecting seat 10 or integrally formed, which can improve the integrity between the crash barrier 3, the capping 1 and the retaining wall 2. The base 8 can also be directly connected to the top of the top section 101 of the wall by anchor bolts.

[0030] Multiple reinforcing plates 9 are evenly arranged circumferentially at the connection between the bottom of the vertical guardrail 301 and the base 8. The reinforcing plates 9 can improve the structural strength of the connection between the vertical guardrail 301 and the base 8, and prevent the vertical guardrail 301 from breaking at the base 8 when it is impacted. Multiple support members 12 are provided in the height direction of the vertical guardrail 301. The support members 12 are L-shaped (angle steel can be used). The first side of the support member 12 is set vertically and is fixedly connected to the vertical guardrail 301. The second side of the support member 12 is set horizontally and is used to support the horizontal guardrail 302. The second side of the support member 12 is provided with a through hole. The horizontal guardrail 302 is also provided with a through hole. The horizontal guardrail 302 and the second side of the support member 12 are detachably connected by a bolt assembly (bolt and nut). The vertical guardrail 301 and the horizontal guardrail 302 can work together to improve the protection effect of the road and ensure the safety of road traffic.

[0031] In application, a first protrusion 13 can also be provided at the bottom of the top section 101 and / or a second protrusion 14 can be provided on the contact surface between the back section 102 and the back wall (see reference). Figure 3 The first protrusion 13 and the second protrusion 14 can both be rectangular or other shapes. When constructing a new retaining wall 2, a first groove that matches the first protrusion 13 can be set on the top of the retaining wall 2 and / or a second groove that matches the second protrusion 14 can be set on the back of the wall 201. When pouring the capping 1, the concrete can enter the first groove and / or the second groove to further increase the stability of the connection between the capping 1 and the retaining wall 2.

[0032] This utility model's concrete retaining wall coping structure is applicable not only to newly constructed retaining walls but also to the renovation of existing retaining walls. By modifying the coping and guardrail structures of existing retaining walls, road traffic safety can be improved. During the renovation of the coping structure of an existing retaining wall, if there are no connecting bars on the existing retaining wall after removing the original coping structure, connecting bars can be inserted into the top of the existing retaining wall to improve the stability of the connection between the concrete retaining wall coping structure and the existing retaining wall. In the renovation of existing retaining walls, a first groove can also be provided on the top of the existing retaining wall and / or a second groove can be provided on the back of the wall to further increase the stability of the connection between the coping structure and the existing retaining wall.

[0033] The above description is merely a detailed illustration of specific embodiments of this utility model, and not a limitation thereof. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A concrete retaining wall coping structure, characterised in that, The application relates to a retaining wall (2) and a coping (1) of the retaining wall (2). The coping (1) is a steel-concrete structure, and two layers of mutually parallel main reinforcement bars (6) are arranged in the wall top section (101) and the wall back section (102).

2. The concrete retaining wall coping structure according to claim 1, wherein The retaining wall (2) is provided with a connecting reinforcement bar (7) extending upwards from the retaining wall (2) into the coping (1).

3. The concrete retaining wall coping structure according to claim 2, wherein The connecting reinforcement bar (7) comprises a vertical reinforcement bar (701), the top and bottom of the vertical reinforcement bar (701) are connected with horizontal reinforcement bars (702) in a vertical mode, the horizontal reinforcement bars (702) at the top and bottom of the vertical reinforcement bar (701) extend in the same direction, the horizontal reinforcement bar (702) at the top of the vertical reinforcement bar (701) is arranged in the steel reinforcement framework of the coping (1) and is connected with the steel reinforcement framework and the concrete of the coping (1) to form an integral structure.

4. The concrete retaining wall coping structure according to claim 3, wherein The wall back (201) side of the retaining wall (2) is filled with soil to form a road surface (11), the road surface (11) is filled to the wall top section (101), and drainage grooves are arranged in the length direction of the wall top section (101).

5. The concrete retaining wall cap structure according to claim 1, wherein The bottom of the wall top section (101) is provided with a first protrusion (13) and / or the contact surface of the wall back section (102) and the wall back is provided with a second protrusion (14).

6. The concrete retaining wall cap structure according to claim 1, wherein The wall top section (101) is in the shape of a right-angled trapezoid, the length of the bottom of the wall top section (101) extending out of the wall back (201) is 20 cm, and the height of the wall top section (101) is 30 cm; the wall back section (102) is in the shape of a parallelogram, the vertical height d1 of the wall back section (102) is 30 cm, and the horizontal width d2 of the wall back section (102) is 20 cm.

7. The concrete retaining wall cap structure according to claim 1, wherein The top surface of the wall top section (101) is provided with a connecting seat (10), a crash barrier (3) is arranged on the connecting seat (10), the bottom of a vertical guardrail (301) of the crash barrier (3) is provided with a base (8), the base (8) is connected with the connecting seat (10), and the connecting seat (10) is embedded in the wall top section (101).

8. The concrete retaining wall coping structure according to any one of claims 1 to 7, wherein The connecting position between the bottom of the vertical guardrail (301) and the base (8) is uniformly provided with a plurality of rib plates (9) in a circumferential mode.

9. The concrete retaining wall cap structure according to claim 8, wherein A plurality of supporting pieces (12) are arranged in the height direction of the vertical guardrail (301), the supporting piece (12) is in the shape of an L, a first side of the supporting piece (12) is fixedly connected with the vertical guardrail (301), a second side of the supporting piece (12) is used for supporting a horizontal guardrail (302), and the horizontal guardrail (302) and the second side of the supporting piece (12) are detachably connected through a bolt assembly.

10. The concrete retaining wall cap structure according to claim 8, wherein ​

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