CN211547155U

CN211547155U - Water permeable flat curb for road

Info

Publication number: CN211547155U
Application number: CN201921580760.9U
Authority: CN
Inventors: 于政; 王艳华; 李力; 毛万全
Original assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-09-22
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses a permeable flat kerb for roads, which is a composite structure with an upper layer and a lower layer, and comprises an upper layer structure of a common concrete structure and a lower layer structure of a porous concrete structure; the outer side of the bottom of the lower-layer structure is longitudinally provided with a plurality of drainage grooves along a road. The utility model discloses a flat kerb permeates water possesses the function of permeating water, can effectively discharge the inside ponding of road surface structure, avoids the road surface structure early destruction to appear under the effect of water, can effectively prolong the life of road.

Description

Water permeable flat curb for road

Technical Field

The utility model belongs to the technical field of the town road construction, concretely relates to used plain curb that has the function of permeating water in road, also be called a side flat stone or the stone of crouching of permeating water.

Background

The kerbstone is a monument which is arranged between a road surface and other structures, and the kerbstone is generally required to be arranged between a separation zone and the road surface of an urban road and between a sidewalk and the road surface. The flat kerbstone is a plane marking stone arranged between a road surface and a vertical kerbstone, and is one type of the kerbstone.

The existing kerbstone is generally composed of materials in two forms, wherein one is prefabricated by common concrete, the other is processed by stone materials, and the materials are all waterproof materials. The foundation under the kerbstone is typically fine-stone concrete, also a water-impermeable material. Because pavement structure bottom is great rolling or tamp basic unit for thickness, is impervious water layer, and curb and lower part foundation are all not permeable water in addition, lead to the inside ponding of pavement surface course to ooze down or discharge through curb and basis. The accumulated water on the surface layer of the pavement and the interface between the surface layer and the base layer can not be smoothly discharged out of the pavement structure, and is one of the main causes of early damage of the pavement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a novel road is with concrete plain kerb that permeates water, the purpose of the invention is to provide a plain kerb that permeates water for solve the problem that the ponding of road surface layer and surface course and basal layer interface can not smoothly be discharged.

The invention discloses a permeable flat curb for a road, which is of an upper-lower double-layer composite structure and comprises an upper-layer structure of a common concrete structure and a lower-layer structure of a porous concrete structure; the outer side of the bottom of the lower-layer structure is longitudinally provided with a plurality of drainage grooves along a road.

Preferably, the cross section of the drainage groove is semicircular.

Preferably, the whole shape of the permeable flat kerb is a cuboid.

Preferably, the lower layer structure is a pervious concrete structure layer, and the thickness of the lower layer structure is 6-8 cm.

Preferably, the drainage grooves of all the permeable flat kerbs are longitudinally communicated to form a flow guide drainage channel.

Preferably, the difference between the total thickness of the water permeable flat kerbstone and the thickness of the road surface layer is not less than 2 cm.

The utility model provides a pair of road is with flat kerb that permeates water possesses the function of permeating water, can effectively discharge the inside ponding of road surface structure, avoids the road surface structure to appear early destruction under the effect of water, can effectively prolong the life of road.

Drawings

FIG. 1 is a perspective view of a water permeable flat curb for roads according to the present invention;

fig. 2 is the relative position relationship diagram of the permeable flat edge stone and the pavement structure layer of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1-2, the present invention provides a permeable flat curb, which is a composite structure with upper and lower layers, including an upper layer structure 1 of a common concrete structure and a lower layer structure 2 of a porous concrete structure; the outer side of the bottom of the lower-layer structure 2 is provided with a plurality of concave drainage channels 3 along the longitudinal direction of the road.

Further, the cross section of the concave drainage channel 3 is semicircular.

Furthermore, the whole shape of the permeable flat kerb is cuboid.

Further, the lower layer structure is a pervious concrete structure layer, and the thickness of the lower layer structure is 6-8 cm.

Furthermore, the drainage grooves of all the permeable flat kerbs are longitudinally communicated to form a flow guide drainage channel. And water in the permeable structure layer seeps into the semicircular water drain holes and is drained to the adjacent rainwater openings through the semicircular water drain grooves.

Furthermore, the difference value of the total thickness of the permeable flat kerb minus the thickness of the road surface layer 4 is not less than 2cm, so that the water inside the road surface layer and the water on the interface of the surface layer and the base layer are smoothly discharged into the permeable layer. The relative position between the permeable flat kerb and the pavement structure layer of the present invention is shown in fig. 2. in fig. 2, the pavement structure layer includes a road surface layer 4 located on the upper layer and a road base layer 5 located on the lower layer.

The utility model provides a have the semicircular water drainage tank of indent along road longitudinal extension in the bottom surface outside of flat kerb that permeates water, utilize understructure's porous concrete of water permeability, with road surface layer and surface course and the infiltration of basement layer interface area water to water drainage tank, by water drainage tank with road surface structure layer infiltration guide emit into the inlet for stom water that closes on again. Thereby effectively discharge the inside ponding of road surface structure, avoid the early damage of road surface structure to appear under the effect of water, can effectively prolong the life of road.

The utility model discloses an embodiment does:

prefabricating a permeable flat kerb:

according to the thickness of the road surface layer and the type of the base layer, the thickness of the upper layer common concrete and the lower layer porous concrete of the flat kerbstone are determined, and the number and the size of the drainage grooves are comprehensively considered according to the local rainstorm intensity and the dredging condition in the using process.

And (3) erecting the mould, mixing the common concrete and the porous concrete for later use, pouring a common concrete layer of the plain kerbstone in the mould according to the required thickness, and then pouring a porous concrete layer in the mould according to the required thickness, wherein the porous concrete layer is provided with a drainage channel according to the requirement. The maintenance of the flat kerbstone and other requirements are the same as those of the existing prefabricated kerbstone. The mechanical properties of the flat kerbstone should meet the relevant requirements in the specifications for concrete kerbstones.

Example 1: water permeable flat kerb for asphalt pavement

The permeable flat kerb for the asphalt pavement is similar to the existing flat kerb in overall dimension and is of a rectangular structure, the length, width and thickness of the permeable flat kerb are respectively 75cm multiplied by 35cm multiplied by 12.5cm, the upper layer is made of common concrete with the thickness of 6.5cm, the lower layer is made of porous concrete with the thickness of 6cm through composite pouring, and the outer side of the bottom surface is provided with a through concave semicircular drainage groove with the length of R being 3cm along the longitudinal direction of a road. The flat kerbstone is suitable for roads with the thickness of an asphalt surface course not more than 10.5cm (the thickness of the asphalt surface course is more than 10.5cm, and the thickness of the flat kerbstone is correspondingly increased so as to ensure that the difference value of the total thickness of the flat kerbstone minus the thickness of the asphalt surface course is not less than 2 cm). The accumulated water in the asphalt surface layer structure seeps downwards to the top surface of the base layer, flows to the roadside under the action of gravity together with interfacial water (the main source of the interfacial water is water in the asphalt surface layer structure, ground water entering the interface from the edge of the road or a road gap, underground water penetrating through the base layer and the like), and then flows to the semicircular drainage groove through the porous concrete of the flat kerbstone, and then flows to the rainwater port through the semicircular drainage groove, so that the accumulated water in the road surface layer is discharged. For asphalt concrete pavements with large void ratio, such as half-open graded or open graded asphalt concrete pavements, the number of drainage grooves should be increased in the bottom of the flat kerb in the longitudinal direction and the transverse direction so as to facilitate rainwater drainage during rainfall.

Example 2: permeable flat kerb for cement concrete pavement

The novel flat kerbstone for the cement concrete pavement is similar to the existing kerbstone in external dimension and is of a rectangular structure, the length, the width and the thickness of the novel flat kerbstone are respectively 75cm multiplied by 35cm multiplied by 25cm, the upper layer is 17cm thick common concrete, the lower layer is formed by compositely pouring 8cm thick porous concrete, and the outer side of the bottom surface is longitudinally provided with a through inner concave semicircular drainage groove with the length of 3 cm. The flat kerbstone is suitable for roads with the thickness of a cement concrete surface layer of 25cm (the thickness of the cement concrete surface layer is larger than or smaller than 25cm, and the thickness of the kerbstone is correspondingly increased or reduced so as to ensure that the difference between the total thickness of the flat kerbstone and the thickness of the cement concrete surface layer is not smaller than 2 cm). The water in the cement concrete surface layer structure seeps to the top surface of the base layer, flows to the roadside under the action of gravity together with interfacial water (the main source of the interfacial water is water in the cement concrete surface structure, ground water entering the interface from the edge or the gap of the road surface, underground water penetrating the base layer and the like) between the surface layer and the base layer, and then flows to the semicircular water drainage groove through the porous concrete and then flows to the rainwater port through the semicircular water drainage groove, so that the water in the road surface layer is discharged. For the cement concrete pavement with shallow underground water level or a permeable base course, the number of the drainage grooves is increased in the longitudinal direction and the transverse direction of the bottom of the flat kerb so as to be beneficial to the drainage of interfacial water between the surface course and the base course.

The utility model discloses a flat kerbstone work progress of permeating water as follows:

1) the corresponding part of the gully is provided with holes, and the number and the size of the holes are the same as the number of the holes of the water permeable flat kerb; the holes of the gully should be inclined downwards from outside to inside, and the inclination angle of the lower edge of the hole is not smaller than 15 degrees.

2) And pouring a fine stone concrete foundation, and placing a road vertical kerb, wherein the vertical kerb is prefabricated by common concrete. For roads with only flat kerbs, the vertical surface of the foundation should be leveled when the fine stone concrete foundation is poured.

3) The base is leveled and the flatness of the notch of the novel flat kerbstone is ensured, and the base at the drainage groove is preferably subjected to mortar plastering treatment.

4) Laying a novel flat kerbstone, wherein a common concrete layer is arranged on the upper portion and a porous concrete layer is arranged on the lower portion.

5) And (4) checking the drainage channel between every 2 rainwater mouths so as to ensure that the drainage channel is communicated.

6) Before the surface layer construction, the upper layer common concrete side surface of the flat kerb is coated with coating oil, and the lower layer porous concrete side surface of the flat kerb is shielded when the coating oil is coated.

7) The other construction requirements are the same as the prior curb construction technology.

It should be clear that, above is the preferred embodiment of the present invention, the present invention also has other implementation manners, such as the present invention changes any process parameters and the like within the range. This is readily accomplished by one of ordinary skill in the art.

While the above embodiments have been described for the purpose of illustration, it is not intended to limit the invention, and various other changes and modifications may be made by those skilled in the art based on the technical idea of the invention, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

1. The permeable horizontal kerb for the road is characterized in that the permeable horizontal kerb is of an upper-lower double-layer composite structure and comprises an upper-layer structure (1) of a common concrete structure and a lower-layer structure (2) of a porous concrete structure; one or more drainage channels (3) are arranged on the outer side of the bottom of the lower-layer structure along the longitudinal direction of the road.

2. The water-permeable flat kerb for road use according to claim 1, characterized in that the cross-section of the drainage channel (3) is semicircular.

3. The water permeable flat curb for road according to claim 1, wherein the whole shape of the water permeable flat curb is a rectangular parallelepiped.

4. The permeable flat curb for the road according to claim 1, characterized in that the understructure (2) is a permeable concrete structure layer with a thickness of 6-8 cm.

5. The road used water permeable flat kerb according to claim 1, characterized in that a plurality of water drainage channels (3) of the water permeable flat kerb are longitudinally communicated to form a diversion drainage channel.

6. The road-used water-permeable flat kerb according to claim 1, wherein the difference between the total thickness of the water-permeable flat kerb and the thickness of the road surface layer is 2-30 cm.