KR102362469B1 - Rainwater penetration and storage type shoulder structure for impermeable pavement road and construction method thereof - Google Patents

Abstract

The present invention relates to a rainwater penetration storage shoulder structure of an impervious pavement to which a LID (Low Impact Development) function that can penetrate, store, and circulate rainwater by improving the gutter of an existing or new road facility, and a construction method thereof, Specifically, it is formed in the boundary section between the road and the sidewalk having an impermeable pavement and includes a side gutter for downward penetration and storage of rainwater flowing from the road, wherein the side gutter is perpendicular to the interface with the impermeable pavement layer of the road. one or more boundary blocks disposed in the direction and made of an impermeable material; and a water permeable pavement layer on the upper portion and a base layer formed by filling of aggregate at the lower portion of the water permeable pavement layer, and a permeation storage layer provided between the boundary block and the sidewalk in the boundary section.

Description

Rainwater penetration and storage type shoulder structure for impermeable pavement road and construction method thereof

The present invention relates to a rainwater penetration storage shoulder structure of an impervious pavement to which a LID (Low Impact Development) function capable of penetrating, storing, and circulating rainwater by improving the gutter of an existing or new road facility is provided, and a construction method thereof.

As water quality problems have been raised due to rapid industrial development and urbanization, many cities around the world have begun to mention the need for an economically efficient and sustainable water circulation system to protect water quality.

Questions have also been raised about the effectiveness of existing water management systems in protecting ecosystems and managing water quality. This is because various problems such as flood damage, urban non-point pollution damage, groundwater depletion and consequent subsidence, and dryness of rivers are getting worse as the impermeable layer increases due to the change in land use pattern due to urbanization.

Meanwhile, due to the recent abnormal climate, unexpected precipitation in summer or environmental damage due to prolonged drought and abnormal high temperature has occurred.

In particular, in the case of urban areas, since most of the ground is impervious, natural water circulation through the land is difficult, and most of the rainwater that falls on the ground flows out into rivers, so the environmental damage is further aggravated in downtown areas.

Republic of Korea Patent No. 0704723

Therefore, the present invention has been devised to solve the above problems, and by improving the gutter of an existing or new road facility, rainwater on an impervious pavement road with a LID (Low Impact Development) function that can penetrate, store, and circulate rainwater An object of the present invention is to provide a permeation retention type shoulder structure and a construction method thereof.

As a means for solving the above problems, the rainwater penetration storage shoulder structure of the impervious pavement according to the present invention (hereinafter referred to as the 'shoulder structure of the present invention') is formed in the boundary section between the driveway and the sidewalk having an impermeable pavement layer one or more boundary blocks disposed in the vertical direction at the interface with the impermeable pavement layer of the roadway and composed of an impermeable material; and a water permeable pavement layer on the upper portion and a base layer formed by filling of aggregate at the lower portion of the water permeable pavement layer, and a permeation storage layer provided between the boundary block and the sidewalk in the boundary section.

As an example, the permeable pavement layer is characterized in that a downward slope toward the sidewalk is formed.

As an example, the side section, the permeable sheet provided on the side exposed to the lower portion of the permeation storage layer and the boundary section of the road or sidewalk, respectively; characterized in that it further comprises.

As an example, the side mouth part, one or more water permeable blocks disposed in parallel with the boundary block at the boundary surface between the boundary block and the permeation storage layer and made of a water permeable material; characterized in that it further comprises.

As an example, the side gutter part, the reinforcing grid provided between the lower part of the permeable storage layer and the permeable block and the upper part of the original ground; is characterized in that it further comprises.

As an example, the reinforcing grid is characterized in that it extends laterally to the lower side of the impermeable pavement layer of the roadway.

As an example, it is installed at regular intervals along the longitudinal direction in the boundary section of the road and the sidewalk, and a grating is provided on the upper part to allow rainwater to flow in and to drain it to the outside; further comprising; the side port includes a plurality of The rainwater penetration storage shoulder structure of the impermeable pavement, characterized in that it further comprises; a vertical drainage pipe having a through hole and communicating with the rainwater storage tank and embedded in the lower part of the permeable block.

On the other hand, the construction method of the rainwater infiltration storage type shoulder structure of the impermeable pavement according to the present invention (hereinafter referred to as the 'construction method of the present invention') according to the present invention, in the construction method of the gutter structure for the existing road facilities, the driveway and setting a boundary section to be constructed with a gutter between sidewalks; digging the boundary section to a certain depth, excavating a depth of the impermeable pavement layer of the roadway included in the boundary section to be shallower than that of the penetration storage layer to secure a construction space; First filling and compacting the aggregate from the construction space to the excavated line of the roadway; disposing a reinforcing grid over the top of the primary filled aggregate layer and over the dug line of the driveway; arranging the boundary block and the water permeable block side by side on the boundary surface with the impermeable pavement layer in the excavated space of the driveway; and secondary filling of aggregate in the remaining exposed construction space to form a base layer of the permeation storage layer and paving the water permeable pavement layer thereon.

In addition, the construction method of the present invention is another example in the construction method of a gutter structure for a new road facility, comprising the steps of: setting a boundary section in which a gutter is to be constructed between a roadway and a sidewalk; disposing a reinforcing grid on the top of the original ground on which the driveway and the side gutter are to be constructed; arranging the boundary block and the permeable block side by side so as to be supported on the reinforcement grid at the virtual boundary surface with the roadway; pre-constructing the base layer of the penetration storage layer by filling and compacting the aggregate to a certain height on the upper part of the base on which the penetration storage layer is to be formed; constructing an impermeable pavement layer on the side of the roadway so as to be in contact with the boundary block; And it is characterized in that it comprises a; and the step of installing a footbridge in turn on the sidewalk side of the foundation structure and the upper portion of the foundation structure, and paving the permeable pavement layer on the base layer of the permeation storage layer.

As described above, the shoulder structure and its construction method according to the present invention are LID (Low Impact Development) that can penetrate, store and circulate rainwater by improving the gutter of an existing or new road facility occupying a large area in downtown areas, etc. By providing a function, there is an effect that can contribute to the prevention of the urban heat island phenomenon while reducing the runoff of rainwater to the environment.

1 is a side cross-sectional view showing the shoulder structure of the present invention.
Figure 2 is a side cross-sectional view showing the infiltration and storage process of rainwater according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the lateral pressure resistance of the side mouth according to an embodiment of the present invention.
4 is a side cross-sectional view showing the configuration of a rainwater storage tank and a vertical drain pipe according to an embodiment of the present invention.
5A and 5B are side cross-sectional views showing an operating state of the rainwater storage tank shown in FIG.
6 is a side cross-sectional view showing an example of constructing the shoulder structure of the present invention to an existing road facility.
7 is a side cross-sectional view showing an example of constructing the shoulder structure of the present invention to a new road facility.

Hereinafter, the configuration and operation of the present invention will be described in more detail based on the accompanying drawings. In describing the present invention, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of the term in order to best describe his or her invention. It should be interpreted as meaning and concept consistent with the technical idea of

Figure 1 is a side cross-sectional view showing the shoulder structure of the present invention, Figure 2 is a side cross-sectional view showing the infiltration and storage process of rainwater according to an embodiment of the present invention, Figure 3 is a side section according to an embodiment of the present invention It is a side cross-sectional view showing the lateral pressure resistance.

The shoulder structure of the present invention is formed in the boundary section (a) of the roadway (1) and the sidewalk (2) having an impermeable pavement layer (10) in an existing or new road facility, and the rainwater flowing from the roadway (1) downward It includes a side section 100 for inducing penetration and retention.

Specifically, as shown in FIG. 1, the side section 100 is disposed in the vertical direction at the interface with the impervious pavement layer 10 of the roadway 1 and is made of an impermeable material. One or more boundary blocks 110 and It includes a water permeable pavement layer 121 on the upper portion and a base layer 122 formed by filling of aggregate at the lower portion of the water permeable pavement layer 121, and the boundary block 110 and the sidewalk in the boundary section (a). (2) includes a permeation storage layer 120 provided between.

The boundary block 110 is provided at the interface between the surface layer of the roadway 1 and the infiltration storage layer 120 .

The boundary block 110 is preferably composed of a concrete block containing an impermeable material and having a sufficient resistance to the lateral pressure applied from the surface layer of the roadway (1) is embedded with reinforcing bars.

In addition, the boundary block 110 is configured to have a thinner thickness than the permeable block 150 to be described below in consideration of the limited width of the side gutter 100, so that the area of the inflow and infiltration section of rainwater can be relatively expanded. .

Referring to FIG. 1 , the side gutter 100 presented in the present invention is disposed parallel to the boundary block 110 at the boundary surface between the boundary block 110 and the infiltration storage layer 120 and is made of a water-permeable material. It may further include one or more permeable blocks 150 .

The water-permeable block 150 is provided side by side with the boundary block 110 at the interface between the surface layer of the roadway 1 and the infiltration storage layer 120, and is formed to be thicker than the boundary block 110 as mentioned above. , serves to induce and separate the penetrating rainwater so as to penetrate downward in the side section (100).

Such a permeable block 150 prevents factors that impair the stability of the pavement layer for the roadway 1 by allowing the penetration and storage of rainwater to be performed only in the section of the side gutter 100, and the surface layer boundary of the roadway 1 prevent damage to

The permeable block 150 is provided between the roadway 1 and the infiltration storage layer 120 together with the boundary block 110 to resist the lateral pressure applied to each other, and according to the balance of the lateral pressure occurring on both sides, there is no bending phenomenon. It is to enable the function of rainwater infiltration to be performed in the boundary section (a) between the roadway (1) and the footpath.

That is, the water-permeable block 150 is a boundary between the surface layers like the roadway 1 having the existing impermeable pavement layer 10 and the water-permeable pavement layer 121 of the side gutter 100, and in particular, the soil pouring at the boundary point. As it performs the role of a retaining wall body, such as prevention of and increasing the compaction effect of the base layer, this retaining wall function can be further doubled through combination with the reinforcing grid 130 to be described below.

The water-permeable material of the water-permeable block 150 can be applied by selecting a suitable one of the known water-permeable materials, and a detailed description thereof will be omitted.

On the other hand, the infiltration storage layer 120 is formed in the remaining section except for the boundary block 110 and the permeable block 150 in the set boundary section (a) of the roadway (1) and the sidewalk (2), and the penetration of rainwater and The water permeable pavement layer 121 is configured on the upper part so that the storage can be induced, and the base layer 122 is configured on the lower part.

The water permeable pavement layer 121 may be a normal inorganic permeable concrete pavement layer, and allows rainwater flowing from the roadway 1 to permeate into the base layer 122 .

At this time, the water permeable pavement layer 121 forms a downward slope toward the sidewalk 2 so that rainwater flowing in from the roadway 1 can be smoothly guided to the sidewalk side.

The base layer 122 is formed by filling with aggregate, and may be a mixed form of crushed stone aggregate, circulating aggregate, etc. having a maximum particle diameter of 25 to 40 mm in consideration of water permeability and vehicle load support performance.

In addition, in consideration of functionality, the base layer 122 may form at least two or more layers using aggregate having a larger particle diameter toward the bottom.

As shown in FIG. 2, the side gutter 100 receives rainwater flowing from the surface of the driveway 1 through the water permeable pavement layer 121 of the permeable block 150 and the infiltration storage layer 120 through the side gutter ( 100), and the rainwater stored through the base layer 122 of the infiltration storage layer 120 and stored through the base layer 122 of the infiltration storage layer 120 to penetrate into the original ground on the lower side of the side gutter 100 and the original ground on the lower side of the foot adjacent to it. It is designed to minimize environmental damage by allowing natural water circulation to occur in spite of insufficient precipitation or prolonged drought.

On the other hand, the side mouth part 100 according to an embodiment of the present invention includes a reinforcement grid 130 and a water permeable sheet 140 as shown in FIG. 1 in order to prevent the protection and durability of the penetration storage layer 120 from being impaired. may include more.

The reinforcing grid 130 is the bottom and the circle of the permeation storage layer 120 and the permeable block 150, as shown in FIG.
It is provided between the upper parts of the ground. And the reinforcing grid 130 allows the lower part of the water permeable block 150 to be fixed by the load pressure and friction resistance of the aggregate of the upper base layer 122, so that the auxiliary base layer of the driveway 1 is installed and compacted. Prevents the permeable block 150 from being pushed or overturned by

And the reinforcing grid 130 is to improve the support for the aggregate of the base layer 122 to perform a function of preventing settlement and improving flatness, in this case, the reinforcing grid 130 is applied to the impermeable pavement layer of the roadway 1 ( 10) By installing so as to extend laterally to the lower side, the aforementioned reinforcing function can be equally performed in the joint section between the impermeable pavement layer 10 and the side section 100 of the roadway 1 .

The water permeable sheet 140 is provided on the side exposed to the lower portion of the penetration storage layer 120 and the boundary section (a) of the roadway (1) or sidewalk (2), respectively, before construction of the penetration storage layer (120). It can be arranged and constructed in advance in the dug space, that is, the dug floor and each side of the side gutter 100 .

Such a water permeable sheet 140 allows rainwater penetrating into the permeation storage layer 120 to flow into the base, while preventing the inflow of soil and soil from the base into the base layer 122 of the permeation storage layer 120. This is to ensure that the infiltration and retention functions are not impaired.

4 is a side cross-sectional view showing the configuration of a rainwater storage tank and a vertical drain pipe according to an embodiment of the present invention, and FIGS. 5A and 5B are side cross-sectional views showing an operating state of the rainwater storage tank shown in FIG. 4 .

Meanwhile, the shoulder structure according to an embodiment of the present invention may further include a rainwater storage tank 30 as shown in FIG. 4 , and the side port 100 is a vertical drain pipe communicating with the rainwater storage tank 30 . (50) provides a configuration that further includes.

The rainwater storage tank 30 is installed at regular intervals along the longitudinal direction of the roadway 1 and the sidewalk 2 in the boundary section (a) of the roadway 1 and the sidewalk 2, and the upper part is on the grating 300. is opened to allow rainwater to flow in from the driveway 1 or the sidewalk 2, and a drain pipe 40 for draining the introduced rainwater to the outside is configured at the lower end.

At this time, the height of the drain pipe 40 is preferably formed at a position relatively higher than that of the vertical drain pipe 50 of the side mouth part 100 to be described below.

And the side port 100 has a plurality of through-holes 500 are formed, communicates with the rainwater storage tank 30 and further includes a vertical drain pipe 50 embedded in the lower part of the permeable block 150 .

Specifically, according to this embodiment, when a large amount of rainwater is temporarily generated due to the occurrence of heavy rain during the rainy season, rainwater is directly transferred from the roadway 1 or the sidewalk 2 to the grating 300 as shown in FIG. 5a. ) through the rainwater storage tank 30 and temporarily stored in the rainwater storage tank 30 to be drained to the outside through the drain pipe 40, and as shown in FIG. 5b, when general rainwater flows As rainwater penetrates and stores the side gutter 100 , rainwater that has penetrated through the permeable block 150 may be introduced into the rainwater storage tank 30 through the through hole 500 of the vertical drain pipe 50 , and rainwater When rainwater introduced into the storage tank 30 is stored up to the height of the drain pipe 33 , it is drained to the outside through the drain pipe 33 .

Although not shown in the drawing, the vertical drain pipe 50 is preferably equipped with a screen to surround the outer periphery so that foreign substances with large particles are filtered out of the rainwater flowing through the through hole 500 .

In addition, the vertical drain pipe 50 may be configured in a form embedded in the lower portion of the water permeable block 150 as mentioned above, but is not limited thereto. It is natural that it may have a structure that is installed by in-situ casting from the lower part of the permeable block 150 before installation of 150).

According to the configuration of this embodiment as described above, it is possible to increase the collection, longitudinal drainage capacity and efficiency of rainwater or running water (heat-reducing sprinkling, cleaning water) penetrating into the side port 100, and in particular, the rainwater storage tank 30 ), so that the rainwater and running water collected in the lower part of the side gutter 100 can be introduced into the rainwater storage tank 30, the vertical drain pipe 50 can serve as an underground waterway.

In addition, in the case of rainwater flowing in through the vertical drain pipe 50 , the initial rainwater penetrating the side gutter 100 is partially purified of surface contaminated water in the downward penetration process of the side gutter 100 , so that the effect of heavy water treatment and water collection Afterwards, the water can be reused.

6 is a side cross-sectional view showing an example of constructing the shoulder structure of the present invention to an existing road facility.

Referring to FIG. 6 , the construction method of the shoulder structure according to an embodiment of the present invention is a method for additionally constructing the side guiding part 100 to an existing road facility.

First, a boundary section (a) is set between the roadway (1) and the sidewalk (2) to be constructed, and then the boundary section (a) is excavated to a certain depth and excavated to secure a construction space. .

In this process, the process of cutting and removing the part that invades the boundary section (a) among the foundation structures 21 of the crosswalk boundary stone 20 exposed by the excavation, and arranging the floor surface of the construction space secured by the excavation process may be included.

Here, in the case of existing road facilities, when the roadway 1 is excessively excavated, disturbance may occur in the surface layer of the impermeable pavement layer 10, that is, the support layer supporting the surface of the impermeable pavement layer 10, the impermeable pavement of the roadway 1 It is desirable to minimize the trench depth for the layer 10 .

Then, as shown in FIG. 6, aggregate including crushed stone is first filled up to the excavated line of the driveway 1 in the construction space secured through the excavation process, and the aggregate layer and the driveway filled through the compaction process Make sure that the excavated bottom surface of (1) coincides.

And the reinforcement grid 130 is installed on the upper part of the first filled aggregate layer and the excavated bottom surface of the roadway 1, and the surface layer of the impermeable pavement layer 10 is formed in the excavated space of the roadway 1 The boundary block 110 is arranged on the boundary surface, and the permeable block 150 is arranged on one side of the boundary block 110 facing the walking side.

After that, the base layer 122 of the infiltration storage layer 120 is formed first by secondary filling of the remaining exposed construction space with aggregate including crushed stone, and then, a water permeable pavement layer at a height corresponding to the roadway 1 on the upper part. By paving the 121, the penetration storage layer 120 can be constructed.

At this time, in the case of the water permeable pavement layer 121, as mentioned above, by paving so that a downward slope is formed toward the sidewalk 2, rainwater from the roadway 1 can easily flow into the side port 100. induce

7 is a side cross-sectional view showing an example of constructing the shoulder structure of the present invention in a new road facility.

Referring to FIG. 7 , a method for constructing a shoulder structure according to another embodiment of the present invention is a method for constructing a side gutter 100 in a new road facility.

First, the boundary section (a) in which the gutter part 100 is to be constructed is set between the roadway (1) and the sidewalk (2), and then, before construction of the roadway (1) and the sidewalk (2), on the virtual interface with the roadway (1) By disposing the boundary block 110, and arranging the permeable block 150 on one side of the boundary block 110 facing the walking side, the area where the roadway 1 will be constructed and the penetration storage layer 120 of the side gate 100 The area to be constructed should be demarcated.

At this time, as shown in FIG. 7 , the reinforcement grid 130 is pre-installed on the top of the original ground on which the roadway 1 and the side section 100 are to be constructed, so that the boundary block 110 and the permeable block 150 are disposed. do.

After that, aggregate including crushed stone, etc. is filled to a certain height on the upper part of the base on which the penetration storage layer 120 is to be formed, and the base layer 122 of the penetration storage layer 120 is first formed through a compaction process, and the impermeability of the roadway (1) By constructing the pavement layer 10 , the boundary block 110 and the water permeable block 150 can resist lateral pressure generated during the filling and compaction process in constructing the impermeable pavement layer 10 .

Then, on the sidewalk (2) side, the foundation structure 21 is constructed so that a part of the infiltration storage layer 120 can be embedded, and the sidewalk boundary stone 20 is sequentially constructed on the upper part of the foundation structure 21, and finally By paving the water permeable pavement layer 121 on the base layer 122 of the permeation storage layer 120, the construction of the permeation storage layer 120 can be completed.

Those skilled in the art from the above description will be able to see that various changes and modifications are possible without departing from the technical spirit of the present invention. Accordingly, the technical scope of the present invention should not be limited to the content described in the detailed description of the specification, but should be defined by the claims.

1: driveway 2: sidewalk
10: impermeable pavement layer 20: boundary stone
30: rainwater storage tank 50: vertical drain pipe
21: sidewalk block 22: basic structure
100: side section 110: boundary block
120: seepage storage layer 121: permeable pavement layer
122: base layer 130: reinforcement grid
140: pitching sheet 150: pitching block

Claims (9)

It is formed in the boundary section between the roadway and the sidewalk having an impermeable pavement layer, and includes a gutter for downward penetration and storage of rainwater flowing from the roadway,
The side section,
one or more boundary blocks disposed in a vertical direction at the interface with the impermeable pavement layer of the roadway and made of an impermeable material;
a permeation storage layer comprising a water permeable pavement layer on the upper portion and a base layer formed by filling of aggregate at the lower portion of the water permeable pavement layer and provided between the boundary block and the sidewalk in the boundary section;
At least one water-permeable block is disposed parallel to the boundary block with a relatively thicker thickness than the boundary block at the boundary surface between the boundary block and the permeation storage layer and is made of a water-permeable material;
It is provided between the lower part of the permeable storage layer and the permeable block and the upper part of the base so that the lower part of the permeable block can be fixed by the load pressure and frictional resistance of the aggregate of the upper base layer, and in the transverse direction to the lower side of the impermeable pavement layer of the driveway. a reinforcing grid extending to have a reinforcing function even in the joint section of the impermeable pavement layer of the roadway and the side gutter; and
A permeable sheet provided on the lower portion of the infiltration storage layer and on the side exposed to the boundary section of the driveway or sidewalk, respectively, so that rainwater penetrating into the infiltration storage layer flows into the original soil while preventing the inflow of soil and soil from the original soil into the base layer of the infiltration storage layer; Rainwater penetration storage shoulder structure of the impermeable pavement, characterized in that it comprises a.
The method of claim 1,
The water permeable packaging layer,
Rainwater penetration storage-type shoulder structure of an impervious pavement, characterized in that a downward slope is formed toward the sidewalk.
delete delete delete delete The method of claim 1,
It further includes; a rainwater storage tank installed at regular intervals along the longitudinal direction in the boundary section between the road and the sidewalk and provided with a grating on the upper part to allow rainwater to flow in and to drain it to the outside;
The side section,
A rainwater penetration storage shoulder structure of an impervious pavement, characterized in that it further comprises; a plurality of through-holes are formed and communicate with the rainwater storage tank and are embedded in the lower portion of the permeable block.
delete In the construction method of a shoulder structure for a new road facility,
setting a boundary section between the roadway and the sidewalk in which the gutter is to be constructed;
disposing a water permeable sheet on the upper side of the base to be constructed with the side gutter and the side facing the sidewalk, respectively, and disposing a reinforcement grid on the upper part of the base to be constructed with the driveway and the side gutter;
arranging the boundary block and the permeable block side by side so as to be supported by the reinforcement grid at the virtual boundary surface with the roadway;
pre-constructing the base layer of the infiltration storage layer by filling and compacting the aggregate to a certain height on the upper part of the base on which the penetration storage layer is to be formed;
constructing an impermeable pavement layer on the side of the roadway so as to be in contact with the boundary block; and
Rainwater infiltration storage shoulder structure of an impervious pavement comprising the steps of sequentially installing a footbridge boundary stone on the sidewalk side of the foundation structure and the upper portion of the foundation structure, and paving the permeable pavement layer on the upper part of the base layer of the infiltration storage layer construction method.

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