CN206448131U - Pavement underdrain structure - Google Patents

Abstract

The utility model discloses a sidewalk culvert structure, which aims to provide a sidewalk culvert structure which has the advantages of little disturbance to the road surface and roadbed and is not prone to quality problems. Sidewalk pavement, there is a drainage channel between the sidewalk surface and the base layer. The drainage channel is surrounded by a "C"-shaped cast-in-place concrete layer and the sidewalk pavement. Both ends of the drainage channel are provided with side stones with holes. The cross-section of the hole side stone is the same as that of the cast-in-place concrete layer, no need to excavate the road, the project scale is small, the construction difficulty is low, the impact on driving is small, and it also has a larger cross-section and a higher Durability, not easy to be blocked by leaves and other sundries, easy maintenance in the later period, and roads and drainage channels are not prone to quality problems.

Description

sidewalk culvert structure

technical field

The utility model relates to the field of pavement drainage systems, in particular to a sidewalk dark ditch structure.

Background technique

With the improvement of the current level of urbanization, the requirements for the pedestrian system of secondary and tertiary highways are also gradually increasing. In order to reduce the amount of construction and damage to the road surface, sidewalks can be directly built on both sides of the road surface, and roads generally use Flood drainage or side ditch drainage is used to discharge the pavement water, and the addition of sidewalks will prevent the accumulated water from entering the side ditch, resulting in drainage problems.

Therefore, people generally bury rainwater pipes at the bottom of the sidewalk to solve the discharge problem of road surface water.

At present, the Chinese patent with the publication number CN202187415U discloses a drainage structure for sidewalks, which includes sidewalk slabs, roadbeds and curbs, a rainwater outlet is provided beside the sidewalk, and a water-resistant layer is provided on the roadbed. A drainage layer is arranged between the floor and the pavement slab, and the drainage layer communicates with the rainwater outlet through the drainage pipe.

Although this kind of pavement drainage structure prevents the sidewalk water from infiltrating into the subgrade to a certain extent and causes damage to the subgrade, but when it is applied to secondary and tertiary highways, due to the high quality of the highway and the high cost, the burying of the rainwater pipe needs to be carried out on the road. Excavation on the surface is not only unsightly, but also greatly disturbs the road surface and roadbed, and quality problems are likely to exist in the later stage.

Utility model content

The purpose of the utility model is to provide a sidewalk culvert structure, which has the advantages of less disturbance to the road surface and roadbed, and less quality problems.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A sidewalk culvert structure, comprising a sidewalk surface and a base course, the sidewalk surface includes a permeable concrete layer and a sidewalk pavement, and a drainage channel is arranged between the sidewalk surface and the base course, and the drainage channel is formed by cast-in-place concrete in the shape of a "U". The floor and sidewalk pavement are surrounded by side stones with holes at both ends of the drainage channel. The cross section of the side stones with holes is the same as that of the cast-in-place concrete layer.

With such a setting, the accumulated water on the road surface can be discharged into the drainage channel in the cast-in-place concrete layer through the holes on the side stones with holes. Compared with the buried drainage pipe, the construction amount is small and the drainage is more convenient. At the same time, the drainage channel can be connected with the sidewalk. Constructed at the same time, no excavation of the road is required, the project scale is small, the construction difficulty is low, and the impact on driving is small. Since the drainage pipe is easy to rust, the use of the drainage channel can have a larger cross-section and higher durability. It is easy to be blocked by debris such as leaves, and it is easy to maintain in the later stage, and roads and drainage channels are not prone to quality problems.

Further setting: the side stone with holes is provided with a drainage outlet, and the drainage outlet is set correspondingly to the position of the drainage channel.

With this arrangement, the accumulated water and rainwater on the surface of the road can be collected and discharged into the drainage channel through the drainage channel with side stones. It is suitable for collecting accumulated water, so as to achieve better drainage effect.

Further setting: the opening side of the side stone with holes is set towards the side of the foundation base, and is in conflict with the cast-in-place concrete layer.

In this way, the function of side stones with holes is to discharge accumulated water on the one hand, and on the other hand, it is to facilitate pedestrians to walk and have an aesthetic effect. This setting can achieve a more beautiful effect without affecting its drainage effect. On the cast-in-place concrete layer, water can be prevented from leaking outward when passing through the drainage outlet in the side stone, thereby reducing the possibility of road damage.

Further setting: the width of the sidewalk surface is 150cm.

In this setting, the width of the sidewalk is generally 75cm to 100cm, and the traffic capacity is about 800 to 1000 people/hour. Since the sidewalk here is set next to the road, the flow of pedestrians is relatively large, and sometimes bicycles enter, so the width of the sidewalk surface is set at 150cm can increase its traffic capacity and prevent the sidewalk from being blocked due to the entry of bicycles.

Further setting: a permeable layer is provided between the permeable concrete layer and the base course.

With such a setting, since the sidewalk has no other drainage facilities except the drainage channel, when the precipitation is large, it is easy to accumulate water in the sidewalk. Drainage pressure, to achieve better results.

Further setting: the permeable layer includes a medium-coarse sand layer, a sand-free concrete layer and a graded crushed stone layer arranged in sequence toward the base layer of the permeable concrete layer.

In this way, the medium-coarse sand layer can preliminarily filter the residues in the accumulated water, and the accumulated water will infiltrate from the sand-free concrete layer. Due to the large pores in the sand-free concrete, the heat transfer is low and the water permeability is good. After passing through the sand-free concrete layer, the infiltration discharge is carried out through the graded crushed stone layer.

Further setting: the side stones with holes are embedded in the permeable layer.

In this way, the side stones with holes are impermeable, and inlaying them in the permeable layer can prevent the gap between the drain outlet and the permeable layer, reduce the possibility of water in the drainage channel seeping outward, and achieve a more stable use effect .

As a preference, the interval between the two adjacent drains is 1500cm.

In this way, if the distance between the two drainage channels is too small, the structure of the entire sidewalk will be unstable and easy to form collapse, while the distance between the two drainage channels is too large to easily make drainage difficult, so the interval is set at 1500cm is more suitable.

In summary, the utility model has the following beneficial effects:

There is no need to excavate the road, the project scale is small, the construction difficulty is low, and the impact on driving is small. It also has a larger cross-section and higher durability. It is not easy to be blocked by leaves and other debris, and it is convenient for later maintenance. Roads and drains are not prone to quality problems.

Description of drawings

Fig. 1 is the structural representation of sidewalk surface in embodiment 1;

Fig. 2 is the sectional view of A-A place among the embodiment 1;

Fig. 3 is a schematic diagram for displaying side stones with holes in embodiment 1;

Fig. 4 is a schematic diagram of installation of side stones with holes in embodiment 1.

In the figure, 1. Foundation base; 2. Sidewalk surface; 21. Permeable concrete layer; 22. Sidewalk pavement; 3. Drainage channel; 4. Cast-in-place concrete layer; 5. Side stone with holes; 51. Outlet; 6 , permeable layer; 61, medium-coarse sand layer; 62, no-sand concrete layer; 63, graded gravel layer.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment 1: a kind of sidewalk culvert structure, as shown in Figure 1, it comprises the sidewalk surface 2 that extends from left to right, and the sidewalk surface 2 below equidistant is provided with the drainage channel 3 that is used to discharge road area water, the drainage channel 3 Side stones 5 with holes are arranged at the upper and lower ends, that is, the edges of the sidewalk surface 2. The accumulated water on the road surface can enter the drainage channel 3 through the side stones 5 with holes, and then be discharged from the drainage channel 3. The width of the sidewalk surface 2 It is 150cm, which is wider than the standard sidewalk surface 2, which can increase the traffic capacity of the whole sidewalk.

As shown in Figure 2, the cast-in-place concrete layer 4 is directly below the sidewalk surface 2, and the cast-in-place concrete layer 4 is arranged in a "U" shape and is formed by pouring concrete. Drainage channel 3 with accumulated water, the cross-section of drainage channel 3 is rectangular, the width of drainage channel 3 is relatively large, the cross-section of water is large, and it is not easy to be blocked by sundries such as leaves, it is more convenient for operators to maintain, and the cast-in-place concrete layer 4 Concrete is poured for high durability.

As shown in Figure 2, the top of cast-in-place concrete layer 4 is sidewalk pavement 22, and the width of sidewalk pavement 22 is identical with the width of cast-in-place concrete layer 4, and the top of drainage channel 3 can be closed like this, and the sidewalk pavement 22 There are permeable concrete layers 21 on both sides, and a permeable layer 6 is arranged between the permeable concrete layer 21 and the base layer 1. The permeable layer 6 includes three parts, from top to bottom are medium coarse sand layer 61, sandless concrete layer 62 and Graded crushed stone layer 63 .

As shown in Figure 2, the thickness of the medium coarse sand layer 61 is the smallest, which is 3cm, followed by the sandless concrete layer 62, with a thickness of 10cm, and the largest thickness is the graded crushed stone layer 63, which is 20cm in thickness. In addition to being discharged through the drain 3 , the accumulated water on the surface 2 can also permeate downward through the permeable concrete layer 21 , and then gradually permeate and discharge through the permeable layer 6 .

As shown in Figure 3, the side stone 5 with holes is a rectangle as a whole, and its middle position is provided with a drainage port 51. The size of the drainage port 51 is exactly the same as that of the drainage channel 3. When the side stone 5 with holes is installed in the sidewalk Referring to Fig. 4, the width of the side stone 5 with holes is greater than the width of the cast-in-place concrete layer 4, the opening of the drain 51 is set downwards, the bottom surface height is the same as the bottom surface of the drainage channel 3, and the left and right sides of the side stone 5 with holes are inlaid in the In the water-permeable layers 6 on both sides, it is possible to prevent the accumulated water in the drainage channel 3 from infiltrating outwards.

The above-mentioned embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution according to needs after reading this description, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of pavement underdrain structure, including pavement face（2）And ground layer（1）, it is characterised in that：The pavement face （2）Including pervious concrete layer（21）Mat formation with pavement（22）, pavement face（2）With ground layer（1）Between be provided with drainage （3）, drainage（3）By the cast-in-place concrete layer in "U" shaped（4）Mat formation with pavement（22）Around into drainage（3）Two ends Provided with kerbstone with holes（5）, kerbstone with holes（5）Cross section and cast-in-place concrete layer（4）Cross section it is identical.

2. pavement underdrain structure according to claim 1, it is characterised in that：The kerbstone with holes（5）It is provided with draining Mouthful（51）, discharge outlet（51）With drainage（3）Position be correspondingly arranged.

3. pavement underdrain structure according to claim 2, it is characterised in that：The kerbstone with holes（5）Be open side court To ground layer（1）Side set, and with cast-in-place concrete layer（4）It is inconsistent.

4. pavement underdrain structure according to claim 1, it is characterised in that：The pavement face（2）Width be 150cm。

5. pavement underdrain structure according to claim 1, it is characterised in that：The pervious concrete layer（21）With ground Layer（1）Between be provided with pervious bed（6）.

6. pavement underdrain structure according to claim 5, it is characterised in that：The pervious bed（6）Including permeable coagulation Soil layer（21）Towards ground layer（1）The medium-sand seam set gradually（61）, non-sand concrete layer（62）With graded broken stone layer（63）.

7. pavement underdrain structure according to claim 5, it is characterised in that：The kerbstone with holes（5）It is embedded in permeable Layer（6）It is interior.

8. pavement underdrain structure according to claim 1, it is characterised in that：Two adjacent drainage（3）It Between be spaced 1500cm.