CN211256535U

CN211256535U - A concrete road surface structure that permeates water for heavy-duty traffic

Info

Publication number: CN211256535U
Application number: CN201921187724.6U
Authority: CN
Inventors: 李辉; 张毅; 王寒冰; 李昊臻; 周浩南; 梁霄
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-08-14
Anticipated expiration: 2029-07-26

Abstract

The utility model provides a concrete pavement structure permeates water for heavy traffic, including the soil bed of mating formation and the concrete surface course that permeates water, the soil bed upper berth of mating formation is equipped with the large pore gap basic unit that permeates water, the soil bed of mating formation with the large pore gap is permeated water and has been laid anti-geotechnological cloth between the basic unit, the large pore gap basic unit upper berth that permeates water is equipped with graded broken stone basic unit, the concrete surface course that permeates water is laid in on the graded broken stone basic unit. The utility model discloses a bearing capacity and water permeability are further strengthened to the road surface structure.

Description

A concrete road surface structure that permeates water for heavy-duty traffic

Technical Field

The utility model belongs to the technical field of the road surface structure, a concrete road surface structure that permeates water for heavy traffic is related to.

Background

At present, pervious concrete pavements are mostly used for light-load traffic roads such as sidewalks, bicycle lanes, residential roads and the like, and in order to meet the construction of modern urban roads, the structure and materials of the pervious concrete pavements need to be optimized so as to meet the traffic requirements of heavy-load traffic.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, a pervious concrete pavement structure for heavy traffic is provided so as to further enhance the bearing performance and the water permeability.

To achieve the above object, the solution of the present invention is: the utility model provides a concrete pavement structure permeates water for heavy-duty traffic, including the concrete pavement of mating formation base and the concrete surface course that permeates water, the concrete pavement of mating formation base upper berth is equipped with the permeable basic unit of macroporosity gap, the concrete pavement with the anti-geotechnological cloth of straining has been laid between the permeable basic unit of macroporosity gap, the permeable basic unit upper berth of macroporosity is equipped with graded broken stone basic unit, the concrete surface course that permeates water is laid in graded broken stone basic unit is last.

Preferably, a leveling layer is laid between the permeable concrete surface layer and the graded broken stone base layer.

Preferably, the leveling layer is formed by paving coarse sand in a water-permeable mode, the thickness of the leveling layer is within the range of 2-3 cm, and the particle size of the coarse sand is within the range of 0.5-1 cm.

Preferably, the graded crushed stone base layer has a thickness in the range of 20 to 40cm, a porosity of 40% and a crushed stone particle size in the range of 2 to 5 cm.

Preferably, the paving soil base comprises a plain soil compacted layer and the soil base compaction degree thereof is in the range of 90% to 93%.

Preferably, the permeable concrete surface layer has a porosity of 18% to 22%, a thickness of 15 to 30cm, a compressive strength of not less than 30MPa, and a flexural tensile strength of not less than 3.5 MPa.

Preferably, the large-pore water-permeable base layer is large-pore water-permeable concrete, the thickness of the large-pore water-permeable base layer is within the range of 10-20 cm, the porosity is within the range of 18-25%, the compressive strength is not lower than 20MPa, and the bending tensile strength is not lower than 2.5 MPa.

The utility model discloses a concrete road surface structure that permeates water for heavy traffic's beneficial effect includes:

1) the large-pore permeable concrete and the graded broken stone double-layer base layer are adopted, and the high-strength surface layer is used for restricting the graded broken stone layer, so that the deformation is limited, and the heavy-load traffic passing requirement is met;

2) the large-pore graded broken stone base layer with a certain thickness has good water storage capacity, and can reduce urban rainfall flood risks;

3) the porosity of the concrete pavement material is controlled to ensure that the concrete pavement material has enough water permeability coefficient, so that the concrete pavement material can quickly infiltrate rainwater on a road surface to avoid forming road surface runoff;

4) the surface layer pavement has a large number of pore structures, and can absorb part of tire-pavement contact noise; when the temperature is higher, the pavement temperature can be reduced by a method of sprinkling water to absorb heat and reduce the temperature, and then the effect of relieving the urban heat island effect is achieved.

Drawings

Fig. 1 is the utility model discloses a section view schematic diagram of a concrete road surface structure that permeates water for heavy traffic.

Reference numbers in the figures:

1-pervious concrete pavement; 2-coarse sand leveling layer; 3- -graded macadam foundation II; 4-large-pore permeable concrete base layer I; 5-reverse filtration geotextile; 6-plain soil layer.

Detailed Description

The invention will be further described with reference to the following examples shown in the drawings.

As shown in fig. 1, the utility model provides an at first concrete pavement structure permeates water for heavy traffic, including the soil matrix of mating formation 6 and the concrete surface course 1 that permeates water, the soil matrix of mating formation 6 upper berth is equipped with the large pore basic unit 4 that permeates water, the soil matrix of mating formation 6 with the geotechnological cloth 5 that has the anti-effect of straining has been laid between the large pore basic unit 4 that permeates water, the large pore basic unit 4 upper berth that permeates water is equipped with graded broken stone basic unit 3, the concrete surface course 1 that permeates water is laid on graded broken stone basic unit 3. Wherein:

and a leveling layer is laid between the pervious concrete surface layer 1 and the graded broken stone base layer 3. The leveling layer 3 is formed by paving coarse sand in a water-permeable mode, the thickness of the leveling layer is within the range of 2-3 cm, and the grain size of the coarse sand is within the range of 0.5-1 cm.

The graded crushed stone base layer 4 has a thickness in the range of 20 to 40cm, a porosity of 40% and a crushed stone particle size in the range of 2 to 5 cm.

The large-pore permeable base layer 4 is made of large-pore permeable concrete, the thickness of the large-pore permeable base layer 4 is within the range of 10-20 cm, the porosity is within the range of 18-25%, and the bending tensile strength is not lower than 20 MPa.

The paving soil foundation 6 comprises a plain soil compaction layer and the soil foundation compaction degree is in the range of 90-93%.

The pervious concrete surface layer 1 is in a concrete pavement form, the porosity of the pervious concrete surface layer is 18-22%, the thickness of the pervious concrete surface layer is 15-30 cm, the compressive strength is not lower than 30MPa, and the bending tensile strength is not lower than 3.5 MPa.

After accomplishing above-mentioned implementation process, should be able to embody the utility model discloses a following characteristics:

the utility model provides a concrete pavement structure that permeates water that can be used to heavy traffic, on taking into account that heavy traffic uses the basis of bearing capacity, select to use the concrete that permeates water as the subbase in the basic unit, the graded broken stone is as last basic unit to ensure permeating water and retaining function of concrete pavement that permeates water, a large amount of holes of surface course can play the effect of making an uproar and cooling down.

The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a concrete road surface structure that permeates water for heavy-duty traffic which characterized in that: the paving material comprises a paving soil base and a permeable concrete surface layer, wherein a large-pore permeable base layer is paved on the paving soil base, reverse filter geotextile is paved between the paving soil base and the large-pore permeable base layer, a graded broken stone base layer is paved on the large-pore permeable base layer, and the permeable concrete surface layer is paved on the graded broken stone base layer;

a leveling layer is laid between the pervious concrete surface layer and the graded broken stone base layer;

the leveling layer is formed by paving coarse sand in a water-permeable mode, the thickness of the leveling layer is within the range of 2-3 cm, and the particle size of the coarse sand is within the range of 0.5-1 cm;

the thickness of the graded broken stone base layer is within the range of 20-40 cm, the porosity is 40%, and the particle size of the broken stone is within the range of 2-5 cm;

the paving soil foundation comprises a plain soil compaction layer, and the soil foundation compaction degree is about 93%;

the porosity of the pervious concrete surface layer is in a range of 18-22%, the thickness is in a range of 15-30 cm, the compressive strength is not lower than 30MPa, and the bending tensile strength is not lower than 3.5 MPa;

the large-pore permeable base layer is made of large-pore permeable concrete, the thickness of the large-pore permeable base layer is 10-20 cm, the porosity is 18-25%, the compressive strength is not lower than 20MPa, and the bending tensile strength is not lower than 2.5 MPa.