Bracket anchor type trenchless trench cover supporting structure

Abstract

The utility model belongs to the field of highway engineering, concretely relates to a bracket anchoring type trench cover plate supporting structure without excavation, which comprises a cover plate and a bracket assembly, wherein: one end of the cover plate is supported on the bracket assembly, and the other end is supported on a trench wall; the bracket assembly is fixed on a retaining wall or rock wall and used for supporting the cover plate, and comprises a bracket, bracket reinforcement and anchor reinforcement; the bracket is a concrete block, the bracket reinforcement is arranged in the bracket, one end of the anchor reinforcement is hooked on the bracket reinforcement and welded, and the other end is implanted in the retaining wall or rock wall. The bracket anchoring type trench cover plate supporting structure without excavation described above can realize construction without excavation by replacing the traditional base excavation with the anchor reinforcement implanted to fix the bracket.

Description

Technical Field

[0001] This utility model belongs to the field of highway engineering, specifically relating to a corbel-anchored, excavation-free trench cover support structure, which is particularly suitable for the installation of covers for side ditches and drainage ditches in restricted sections of highway subgrade. Background Technology

[0002] In recent years, people have paid increasing attention to the safety, comfort, and aesthetics of roads. For roadside ditches, drainage ditches, and pipe trenches near the roadbed edge, covers are often added for safety and aesthetic reasons, or when sidewalks need to be added. However, for road sections where the inner side of the roadbed is a retaining wall or steep bedrock, the terrain on the side closest to the wall or mountain restricts the installation of covers. This often requires treating the retaining wall or excavating the bedrock to create a cover base, but this approach is difficult to implement, expensive, and environmentally damaging, resulting in a poor overall effect. Another option is to demolish and rebuild the existing ditch, adding a base and cover, but this also has a high construction cost and reduces the available space in the ditch. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome the deficiencies and defects mentioned in the background art above, and to provide a bracket-anchored trench cover support structure that requires no excavation and has low construction difficulty. To solve the above technical problem, the technical solution proposed by this utility model is as follows:

[0004] A corbel-anchored trench cover support structure includes a cover plate and a corbel assembly, wherein:

[0005] One end of the cover plate is supported by the bracket assembly, and the other end is supported by the trench wall;

[0006] A corbel assembly, fixed to a retaining wall or rock face, is used to support a cover plate. It includes a corbel, corbel reinforcement bars, and anchor bars. The corbel is a concrete block, the corbel reinforcement bars are placed inside the corbel, one end of the anchor bars hooks onto the corbel reinforcement bars and is welded to the corbel reinforcement bars, and the other end is embedded in the retaining wall or rock face.

[0007] In one embodiment, the cow leg is a wedge-shaped block.

[0008] In one embodiment, a support steel plate is provided at the lower part of the surface of the corbel that is in contact with the retaining wall or rock wall.

[0009] In one embodiment, the anchor bar is a hot-rolled ribbed steel bar or a fully threaded anchor rod.

[0010] In one embodiment, the end hook of the anchor bar hooks onto the corbel reinforcement bar and is fully welded together.

[0011] In one embodiment, the cover plate is made of reinforced concrete or lightweight high-strength concrete.

[0012] In one embodiment, the top of the cover plate is provided with a paving layer, which is a waterproof concrete paving layer or an asphalt concrete paving layer.

[0013] In one embodiment, concrete or mortar is poured into the groove near the junction of the cover plate and the retaining wall or rock wall.

[0014] In one embodiment, a pad, which is a concrete block, is provided between the cover plate and the trench wall.

[0015] In one embodiment, the cover plate is supported on the outer side of one end of the trench wall by a curb stone, which connects to the road surface structure layer.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: In the above-mentioned corbel anchored trench cover support structure, anchor bars are directly implanted into the bedrock steep wall or retaining wall to fix the corbel, avoiding the damage to the existing rock mass or retaining wall caused by traditional foundation excavation, resulting in high construction efficiency and minimal environmental impact; the implantation angle of the anchor bars can be dynamically adjusted according to the rock wall inclination angle, and their strength and depth are precisely designed based on the cover plate load and rock mass parameters, and welded with the corbel reinforcement to form an integral skeleton, making construction convenient and highly practical; the support steel plate pre-embedded in the lower part of the corbel contact surface further enhances the shear bearing capacity, significantly increasing the service life of the support structure; this design breaks through the limitations of steep terrain, successfully achieving rapid installation of trench covers in roadbed retaining walls or rock wall sections, reducing overall costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a bracket-anchored trench cover support structure according to one embodiment.

[0019] Attached reference numerals: 1: corbel; 2: corbel reinforcement; 3: anchor bar; 4: support plate; 5: cover plate; 6: trench wall; 7: road structure layer; 8: pad block; 9: curb stone; 10: pavement layer. Detailed Implementation

[0020] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0022] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0023] Please see Figure 1 An embodiment of the corbel-anchored trench cover support structure mainly includes: corbel 1, corbel reinforcement 2, anchor bars 3, and cover plate 5. The corbel 1, corbel reinforcement 2, and anchor bars 3 constitute a corbel assembly. The corbel assembly supports the cover plate 5. The corbel 1 is a concrete block, and the corbel reinforcement 2 is placed inside the corbel 1. The corbel 1 is connected to a retaining wall or rock wall via the anchor bars 3. One end of the anchor bar 3 is embedded in the retaining wall or rock wall, and the other end hooks onto the corbel reinforcement 2 and is welded to it to form an integral skeleton, so that when the weight of the cover plate 5 is transferred to the corbel 1, the reinforcement resists the shear force. The cover plate 5 is supported at one end by the corbel assembly and at the other end by the trench wall.

[0024] Specifically, the corbel 1 is a wedge-shaped block structure that fits into the retaining wall or rock face to achieve excavation-free anchoring.

[0025] Specifically, a support steel plate 4 is pre-embedded in the lower part of the surface where the corbel 1 contacts the retaining wall or rock wall to further ensure structural stability.

[0026] Specifically, the anchor bar 3 is a hot-rolled ribbed steel bar or a fully threaded anchor rod. The end hook of the anchor bar 3 hooks onto the corbel steel bar 2 and is then fully welded. The weld point is encased in the concrete of the corbel 1 to avoid damage from blasting impact.

[0027] Specifically, a pad 8 is provided between the cover plate 5 and the trench wall 6. The pad 8 is a concrete block that can be cut on site to fit different trench heights.

[0028] Specifically, the cover plate 5 is supported at one end of the trench wall 6 by a curb stone 9, which connects to the road surface structure layer 7.

[0029] Specifically, the groove of the cover plate 5 near the junction of the corbel 1 and the retaining wall or rock wall is filled with cast-in-place concrete or mortar to prevent rainwater from seeping in and corroding the anchor bar 3.

[0030] Preferably, the main body of the cover plate 5 is reinforced concrete or lightweight high-strength concrete, which can reduce the load on the corbel 1.

[0031] Preferably, the top of the cover plate 5 is integrally cast with a pavement layer 10, which is a waterproof concrete pavement layer or an asphalt concrete pavement layer, effectively resisting daily wear and tear and extending durability.

[0032] The working process of the above-mentioned corbel anchored trench cover support structure is as follows: Drill holes in the retaining wall or rock wall, clean the holes and inject adhesive, insert the anchor bar 3 into the hole, and cure it. Then, tie the corbel bar 2 to the outer anchor bar 3, hook it to the transverse corbel bar 2 and weld the connected parts. Embed the support steel plate 4 at the lower end of the side of the wall or rock wall. Then, set up the formwork on site and pour concrete to complete the corbel 1, realizing the construction of the trenchless base. Next, install the pad block 8 on the upper part of the existing trench wall 6. The cover plate 5 is supported on one end of the pad block 8 and the curb stone 9 is set. The curb stone 9 connects to the road structure layer 7. After the installation is completed, place the pre-made trench cover plate 5 on it. Finally, pour the pavement layer 10 on the cover plate 5.

[0033] This corbel-anchored, excavation-free trench cover support structure uses embedded anchor bars 3 to fix the corbel 1 to the retaining wall or rock face, forming the base of the cover 5. Construction is convenient and highly practical. The integral skeleton formed by welding the corbel reinforcement 2 and anchor bars 3 significantly enhances the load-bearing capacity, allowing the reinforcement to resist shear force when the weight of the cover 5 is transferred to the corbel 1, ensuring structural stability. The pre-embedded support plate 4 at the bottom of the corbel 1 effectively improves its strength and stability. By setting pads 8 and curb stones 9 above the trench wall 6, a separable structure is formed between the cover 5, the trench wall 6, and the pavement structure layer 7, facilitating the installation, replacement, and maintenance of the cover 5. The additional pavement layer 10 on top of the cover 5 effectively resists daily wear and tear, extending its durability. The overall structural materials and dimensions are flexibly designed as needed, combining simplicity, economy, and engineering adaptability, demonstrating significant effectiveness in applications involving retaining walls in road cuts and steep bedrock sections (such as the Xiangjiaba Power Plant road).

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bracket-anchored, excavation-free trench cover support structure, characterized in that, include: Cover plate and bracket assembly, wherein: One end of the cover plate is supported by the bracket assembly, and the other end is supported by the trench wall; A corbel assembly, fixed to a retaining wall or rock face, is used to support a cover plate. It includes a corbel, corbel reinforcement bars, and anchor bars. The corbel is a concrete block, the corbel reinforcement bars are placed inside the corbel, one end of the anchor bars hooks onto the corbel reinforcement bars and is welded to the corbel reinforcement bars, and the other end is embedded in the retaining wall or rock face.

2. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The cow leg is wedge-shaped.

3. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The lower part of the corbel that is in contact with the retaining wall or rock wall is provided with a support steel plate.

4. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The anchor bar is a hot-rolled ribbed steel bar or a fully threaded anchor rod.

5. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The end hook of the anchor bar is hooked onto the corbel reinforcement bar and fully welded together.

6. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The cover plate is made of reinforced concrete or lightweight high-strength concrete.

7. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The top of the cover plate is provided with a paving layer, which is a waterproof concrete paving layer or an asphalt concrete paving layer.

8. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The cover plate is placed in a groove near the junction of the corbel and the retaining wall or rock wall, where concrete or mortar is poured in place.

9. The bracket-anchored trench cover support structure according to claim 1, characterized in that, A pad, which is a concrete block, is provided between the cover plate and the trench wall.

10. The bracket-anchored trench cover support structure according to claim 1, characterized in that, The cover plate is supported on the outer side of one end of the trench wall and has a curb stone, which connects to the road surface structure layer.

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