Drainage ditch structure

Abstract

The utility model discloses a drainage ditch structure which comprises a road surface and a retaining wall, and a drainage side ditch is arranged on one side of the retaining wall and located below the road surface. The drainage side ditch comprises a bottom plate, the side, close to the road surface, of the bottom plate is fixedly connected with the retaining wall, and the side, away from the road surface, of the bottom plate is provided with a side wall; the drainage side ditch for discharging water flow is formed among the retaining wall, the side wall and the bottom plate; the retaining wall is provided with a drainage hole extending towards the interior of the drainage side ditch. The prefabricated drainage ditch is suitable for a pavement drainage project with a very narrow and limited construction space, and the construction progress and the construction quality are effectively guaranteed by prefabricating the drainage ditch, so that the prefabricated drainage ditch has obvious advantages in the aspects of economy, construction convenience, construction period and the like.

Description

Technical Field

[0001] The utility model relates to a drainage ditch structure and belongs to the technical field of road engineering. Background Art

[0002] In road construction, if the inner side of the road is a high and steep mountain and the outer side is close to the river, in order to reduce the excavation of the mountain and environmental damage, the widening of the road needs to be mainly to the outside of the road. However, due to the steep slope of the outer side and the proximity to the river, there is basically no slope reduction condition. Therefore, the roadbed widening is mainly to set up a shoulder retaining wall on the outside. Conventionally, drainage ditches are generally not set up on the outside of the shoulder retaining wall, and road surface drainage is mainly scattered. However, if the road is built in a water source protection area, the road surface drainage cannot be directly discharged into the river belonging to the water source protection area. It is necessary to set up a drainage ditch on the outside of the retaining wall to collect the water, and then flow it into the sedimentation tank and oil-water separation tank for treatment before it can be discharged into the river.

[0003] The applicant's prior application CN219972849U discloses an assembled drainage ditch, which includes a number of ditch sections connected in sequence, and the ditch sections are arranged between the road cut slope and the highway; the ditch sections include a first concrete body and a second concrete body; the first concrete body and the second concrete body both have a docking structure that enables the first concrete body and the second concrete body to be staggered and spliced ​​into a whole ditch section; however, adding drainage ditch templates for comprehensive splicing requires re-customization of the templates and training of workers, and the bottom of the drainage ditch needs to drain water in a specific direction according to a certain slope, which requires that the splicing elevation of the template be adjusted and corrected during the construction process to ensure that the bottom of the drainage ditch is smooth, otherwise some sections will not drain well, water will overflow, and the desired effect will not be achieved. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provide a drainage ditch structure which is convenient for construction and can shorten the construction period.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A drainage ditch structure comprises a road surface and a retaining wall, wherein a drainage ditch is arranged on one side of the retaining wall and below the road surface; the drainage ditch comprises a bottom plate, the side of the bottom plate close to the road surface is fixedly connected to the retaining wall, and the side of the bottom plate away from the road surface is provided with a side wall; the drainage ditch for water flow discharge is formed between the retaining wall, the side wall and the bottom plate; and the retaining wall is provided with a drainage hole extending into the drainage ditch.

[0007] Therefore, in order to ensure that the impact on the water source protection area is minimized as much as possible, and at the same time limited by the steep terrain conditions of the river and along the line, the installation and construction steps of the drainage ditch of the utility model are simple. It is only necessary to connect the bottom plate of the drainage ditch with the retaining wall, and use the retaining wall as the other side wall of the drainage ditch, which saves construction space and reduces the difficulty of prefabrication and installation of the drainage ditch.

[0008] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization:

[0009] In order to facilitate installation and adapt to different road slopes, specifically, the drainage ditch includes a number of ditch sections connected in sequence, and the ditch section includes a first concrete body and a second concrete body; the first concrete body and the second concrete body both have a docking structure that enables the first concrete body and the second concrete body to be staggered and spliced ​​into a complete ditch section.

[0010] Specifically, the first concrete body includes the side wall, a first bottom wall arranged at the bottom of the side wall, and a docking structure arranged on one side of the first bottom wall; the second concrete body includes a second bottom wall and a docking structure arranged on one side of the second bottom wall; the first concrete body and the second concrete body are spliced ​​together through the docking structure to form a complete bottom plate.

[0011] Specifically, the docking structure includes a first protrusion arranged on the first bottom wall and a first groove arranged on one side of the first protrusion, and also includes a second groove and a second protrusion on the second bottom wall that match the first protrusion and the first groove.

[0012] Specifically, the drainage hole is arranged to be inclined downward toward one side of the drainage ditch.

[0013] In order to make the installation of the drainage ditch section more stable, specifically, a roughened surface is provided at the connection between the retaining wall and the bottom plate of the drainage ditch.

[0014] Specifically, the retaining wall and the drainage ditch are fixedly connected by cement mortar.

[0015] Specifically, a plurality of the side ditch sections connected together are fixedly connected by cement mortar; cement mortar for fixing the first concrete body and the second concrete body is poured between the joint surfaces of the first concrete body and the second concrete body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The drainage ditch structure of the utility model is suitable for road drainage projects with very narrow and limited construction space. By prefabricating the drainage ditch, the construction progress and construction quality are effectively guaranteed, which improves the economy and construction convenience and shortens the construction period. One section of the side ditch is composed of two assembled structures, and the assembled gaps are filled and smoothed with cement mortar, and the prefabricated blocks can be prefabricated using existing prefabrication sites, which can also greatly reduce the construction difficulty and improve the convenience of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the side ditch section of the utility model.

[0020] In the figure

[0021] 1-retaining wall; 2-drainage ditch; 20-ditch section; 201-first concrete body; 202-second concrete body; 21-bottom plate; 22-side wall; 23-first bottom wall; 24-second bottom wall; 3-drainage hole; 4-docking structure; 41-first protrusion; 42-first groove; 43-second groove; 44-second protrusion; 5-pavement surface. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0023] like Figure 1 As shown, the drainage ditch structure of this embodiment includes a road surface 5 and a retaining wall 1, and a drainage ditch 2 is arranged on one side of the retaining wall 1 and below the road surface 5; the drainage ditch 2 includes a drainage ditch 21, the side of the bottom plate 21 close to the road surface 5 is fixedly connected to the retaining wall 1, and the side of the bottom plate 21 away from the road surface 5 is provided with a side wall 22; the drainage ditch 2 for water flow to be discharged is formed between the retaining wall 1, the side wall 22 and the bottom plate 21. In order to enhance the connection stability between the drainage ditch 2 and the retaining wall 1, the connection between the retaining wall 1 and the bottom plate 21 of the drainage ditch 2 is provided with a roughened surface; the retaining wall 1 and the drainage ditch 2 are fixedly connected by cement mortar.

[0024] The drainage ditch 2 includes a plurality of ditch sections 20 connected in sequence, and the ditch section 20 includes a first concrete body 201 and a second concrete body 202; the first concrete body 201 and the second concrete body 202 are provided with a docking structure 4 that enables the first concrete body 201 and the second concrete body 202 to be staggered and spliced ​​into a complete ditch section 20. The first concrete body 201 includes the side wall 22, a first bottom wall 23 arranged at the bottom of the side wall 22, and a docking structure 4 arranged on one side of the first bottom wall 23; the second concrete body 202 includes a second bottom wall 24 and a docking structure 4 arranged on one side of the second bottom wall 24; the first concrete body 201 and the second concrete body 202 are spliced ​​together through the docking structure 4 to form a complete bottom plate 21.

[0025] The docking structure 4 includes a first protrusion 41 provided on the first bottom wall 23 and a first groove 42 provided on one side of the first protrusion 41, and also includes a second groove 43 and a second protrusion 44 provided on the second bottom wall 24 and matching with the first protrusion 41 and the first groove 42. The plurality of connected side ditch sections 20 are fixedly connected by cement mortar; cement mortar for fixing the first concrete body 201 and the second concrete body 202 is poured between the joint surfaces of the first concrete body 201 and the second concrete body 202.

[0026] The first protrusion 41 on the first concrete body 201 is butted with the second groove 43 on the second concrete body 202, and the first groove 42 on the first concrete body 201 is butted with the second protrusion 44 on the second concrete body 202. In this way, the first bottom wall 23, the butt joint structure 4 and the second bottom wall 24 can be assembled into a complete drainage ditch bottom plate 21, and the spliced ​​ditch section 20 has only one side wall 22. Then, the side of the bottom plate 21 without the side wall is connected to the retaining wall 1 to form the drainage ditch 2 for water flow discharge. Since the first concrete body 201 and the second concrete body are only provided with one protrusion for splicing, the structure of the first concrete body 201 and the second concrete body 202 is more stable, and the difficulty of assembly is also reduced.

[0027] The retaining wall 1 is provided with a drainage hole 3 extending toward the inside of the drainage ditch 2 , and the drainage hole 3 is arranged to be inclined downward toward one side of the drainage ditch 2 .

[0028] The present embodiment provides a drainage ditch structure, specifically a combined structure of a retaining wall and a drainage ditch, which effectively solves the problem of drainage of retaining wall sections on shoulders in environmentally sensitive areas. Conventional drainage ditches are set at the foot of the fill slope, and the main construction procedures are: clean the construction area and mark the location of the drainage ditch → measure and determine the elevation and slope of the drainage ditch → dig the ditch → make a concrete drainage ditch template → pour concrete → smooth the concrete surface → maintain concrete → clean the construction site and inspect. When there are many vehicles passing through the road, especially tourist buses, during the construction process, full-width closed construction cannot be adopted. Most of the time, only half-width closed construction can be adopted, which results in an abnormal shortage of construction platform surfaces. In addition, the width of the existing road surface 5 is relatively narrow, and the construction platform surfaces that can be provided are relatively limited.

[0029] Therefore, after the shoulder retaining wall is completed and reaches the design strength, the drainage ditch route is laid out on the outside of the retaining wall, and the drainage ditch construction position, the corresponding installation position of the drainage ditch and the retaining wall, the outer side of the retaining wall is roughened, and then the drainage ditch is constructed. Since the on-site construction working surface is narrow, it is not conducive to the on-site pouring of the drainage ditch. We propose to use the existing prefabrication site for centralized prefabrication, and after reaching the design strength, transport it to the site for splicing and assembly, fill and smooth the bonding with the retaining wall and the splicing position of the drainage ditch with cement mortar, and do a good job of anti-seepage treatment.

[0030] After roughening the outer side of the conventional shoulder retaining wall, a prefabricated drainage ditch is constructed to make it a retaining wall and drainage ditch combined structure with retaining and drainage functions. Since the project is located in a water source protection area and is close to the river, the number of sedimentation tanks and oil-water separation tanks set up along the line is limited and the spacing is far. Therefore, for drainage in a specific direction, the most basic requirement is continuity and smoothness. The outer side of the retaining wall is roughened to ensure that the prefabricated drainage ditch can better bond with the retaining wall. The anti-seepage treatment at the bonding point is to prevent water from seeping in and scouring the retaining wall foundation. The prefabricated blocks of the drainage ditch side ditch section are 0.5 meters each, and each section consists of two assembled structures. The gaps between the assemblies are filled and smoothed with cement mortar, and the prefabricated blocks can be prefabricated using existing prefabrication sites, which can also greatly reduce the difficulty of construction and improve the convenience of construction.

[0031] The drainage ditch structure of this embodiment is suitable for road surface drainage projects with very narrow and limited construction space. By prefabricating the drainage ditch, the construction progress and quality are effectively guaranteed, which has obvious advantages in terms of economy, construction convenience, construction period, etc.

[0032] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

Claims

1. A drainage ditch structure, comprising a road surface (5) and a retaining wall (1), characterized in that: A drainage ditch (2) is provided on one side of the retaining wall (1) and below the road surface (5); the drainage ditch (2) comprises a bottom plate (21), the side of the bottom plate (21) close to the road surface (5) is fixedly connected to the retaining wall (1), and the side of the bottom plate (21) away from the road surface (5) is provided with a side wall (22); the drainage ditch (2) for water flow to be discharged is formed between the retaining wall (1), the side wall (22) and the bottom plate (21); and a drainage hole (3) extending into the interior of the drainage ditch (2) is provided on the retaining wall (1).

2. The drainage ditch structure according to claim 1, characterized in that: The drainage ditch (2) comprises a plurality of ditch sections (20) connected in sequence, wherein the ditch section (20) comprises a first concrete body (201) and a second concrete body (202); the first concrete body (201) and the second concrete body (202) are both provided with a butt joint structure (4) capable of staggered splicing of the first concrete body (201) and the second concrete body (202) into a complete ditch section (20).

3. The drainage ditch structure according to claim 2, characterized in that: The first concrete body (201) comprises the side wall (22), a first bottom wall (23) arranged at the bottom of the side wall (22), and a docking structure (4) arranged on one side of the first bottom wall (23); the second concrete body (202) comprises a second bottom wall (24) and a docking structure (4) arranged on one side of the second bottom wall (24); after the first concrete body (201) and the second concrete body (202) are spliced ​​together via the docking structure (4), a complete bottom plate (21) is formed.

4. The drainage ditch structure according to claim 3, characterized in that: The docking structure (4) comprises a first protrusion (41) arranged on the first bottom wall (23) and a first groove (42) arranged on one side of the first protrusion (41), and also comprises a second groove (43) and a second protrusion (44) arranged on the second bottom wall (24) and matching with the first protrusion (41) and the first groove (42).

5. The drainage ditch structure according to claim 1, characterized in that: The drainage hole (3) is arranged to be inclined downward toward one side of the drainage ditch (2).

6. The drainage ditch structure according to claim 1, characterized in that: A roughened surface is provided at the connection between the retaining wall (1) and the bottom plate (21) of the drainage ditch (2).

7. The drainage ditch structure according to claim 1, characterized in that: The retaining wall (1) and the drainage ditch (2) are fixedly connected by cement mortar.

8. The drainage ditch structure according to claim 2, characterized in that: The plurality of side ditch sections (20) connected together are fixedly connected by cement mortar; cement mortar for fixing the first concrete body (201) and the second concrete body (202) is poured between the joint surfaces of the first concrete body (201) and the second concrete body (202).

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