CN209741599U - can improve road surface structure of basic unit intensity of permeating water - Google Patents
can improve road surface structure of basic unit intensity of permeating water Download PDFInfo
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- CN209741599U CN209741599U CN201920204216.8U CN201920204216U CN209741599U CN 209741599 U CN209741599 U CN 209741599U CN 201920204216 U CN201920204216 U CN 201920204216U CN 209741599 U CN209741599 U CN 209741599U
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Abstract
The utility model discloses a road surface structure capable of improving the strength of a permeable base layer, which solves the problems of lower strength and poorer durability of the permeable road surface in the prior art, utilizes the side limit constraint effect of a geocell to obviously improve the road performance of a permeable base layer material, improves the mechanical properties of the road surface base layer such as bending resistance, shearing resistance, compression resistance and the like, and effectively prolongs the service life of the road surface structure; the technical scheme is as follows: comprises a composite water permeable bottom layer, a composite water permeable base layer, a geogrid layer and a water permeable surface layer which are sequentially laid from bottom to top; the composite permeable base layer comprises geocells with set thickness and graded broken stones, and the geocells with set thickness and permeable concrete.
Description
Technical Field
The utility model relates to a road construction technical field especially relates to a can improve road surface structure of basic unit's intensity of permeating water.
Background
The permeable pavement is one of main projects of a sponge city, has good water permeability and air permeability, and can enable ground water to rapidly permeate into the ground to prevent water accumulation on the pavement. However, the inventor finds that the existing permeable pavement structural base layer implemented at home and abroad generally has the problems of low strength and poor durability, and the design and use requirements are difficult to meet, so that the sponge city cannot be well popularized.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art not enough, the utility model provides a can improve the road surface structure of basic unit's intensity of permeating water, its limit of side constraint effect that utilizes geotechnological check room is showing the road performance who improves the basic unit's material that permeates water, improves mechanical properties such as road surface basic unit bending resistance, shear, resistance to compression, effectively prolongs road surface structure's life.
The utility model adopts the following technical proposal:
a pavement structure capable of improving the strength of a water permeable base layer comprises a composite water permeable bottom layer, a composite water permeable base layer, a geogrid layer and a water permeable surface layer which are sequentially laid from bottom to top;
The composite permeable base layer comprises geocells with set thickness and graded broken stones, and the geocells with set thickness and permeable concrete.
furthermore, the graded broken stones are arranged on the inner side of the geocell, and the height of the graded broken stones is larger than that of the geocell.
Furthermore, the laying height of the graded broken stone is 10-15 cm, and the height of the geocell outside the graded broken stone is 10 cm.
furthermore, the pervious concrete is arranged on the inner side of the geocell, and the height of the pervious concrete is greater than that of the geocell.
Further, the laying height of the pervious concrete is 10-15 cm, and the height of the geocell on the outer side of the pervious concrete is 10 cm.
Further, the geogrid layer is a glass fiber grid.
Furthermore, the permeable surface layer is a permeable asphalt surface layer.
Further, the permeable asphalt surface layer comprises medium-grain type permeable asphalt concrete of a lower layer and fine-grain type permeable asphalt concrete of an upper layer.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model is provided with the composite permeable bottom layer and the composite permeable base layer, the geocell in the composite permeable bottom layer provides lateral restraint force for graded broken stones, and simultaneously improves the integrity and compressive strength of the subbase layer; the geocell of the composite permeable base layer provides lateral restraint force for the permeable concrete layer, and simultaneously improves the compressive strength and the flexural strength of the base layer;
(2) The glass fiber grating is additionally arranged above the base layer, so that the bearing stress of the pavement can be dispersed, and the reflection cracks of the pavement can be effectively prevented;
(3) The utility model has high comprehensive environmental protection benefit, can reduce the consumption of cement and graded broken stone, and reduce environmental pollution; conserving water and reducing urban heat island effect; the comprehensive utilization rate of chemical raw materials is improved, and the influence of chemical excess materials on the environment is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
The concrete comprises 1 fine grain type permeable asphalt concrete, 2 medium grain type permeable asphalt concrete, 3 glass fiber grating, 4 composite permeable base layer, 5 composite permeable bottom layer, 6 roadbed.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the prior art has disadvantages of low strength and poor durability of the permeable pavement, and in order to solve the above technical problems, the present application provides a pavement structure capable of improving the strength of the permeable base layer.
The first embodiment is as follows:
As shown in fig. 1, the embodiment provides a pavement structure capable of improving the strength of a permeable base layer, and the pavement structure is laid above a roadbed 6, wherein the compaction degree of the roadbed is more than or equal to 94%; the pavement structure comprises a composite permeable bottom layer 5, a composite permeable base layer 4, a geogrid layer and a permeable surface layer which are sequentially laid from bottom to top.
The composite permeable bottom layer 5 comprises geocells with set thickness and graded broken stones, and the graded broken stones are arranged on the inner sides of the geocells; the graded broken stones are compacted according to the normal water permeability requirement, the geocell provides lateral restraint force for the looser graded broken stones, and the integrity and the compressive strength of the graded broken stones are improved while the water permeability requirement is met.
the height of the graded broken stones is greater than that of the geocell, and the graded broken stones can be set according to actual pavement requirements.
In the embodiment, the paving height of the graded broken stone is 10-15 cm, and the height of the geocell outside the graded broken stone is 10 cm.
The composite permeable base layer 4 comprises a geocell with set thickness and permeable concrete, the permeable concrete is arranged on the inner side of the geocell, the permeable concrete is matched and compacted according to normal permeable requirements, the geocell provides lateral constraint force for the permeable concrete, and the compressive strength and the flexural strength of the permeable concrete are improved while the permeable requirements are met.
The height of the pervious concrete is greater than that of the geocell, and the pervious concrete can be set according to the actual pavement requirement.
In the embodiment, the laying height of the pervious concrete is 10-15 cm, and the height of the geocell outside the pervious concrete is 10 cm.
In this embodiment, the size of the geocell is 20cm × 20 cm; it will be appreciated that in other embodiments the size of the geocell may be selected according to the actual requirements.
and (3) paving a geogrid layer above the composite permeable base layer 4 besides the normal interlayer binding material.
The geogrid layer is a glass fiber grid 3, so that the bearing stress of the pavement can be dispersed, and the reflection cracks of the pavement caused by cracks of the base layer are reduced.
The permeable surface layer is a permeable asphalt surface layer and is laid according to the conventional requirements.
The permeable asphalt surface layer comprises a middle grain type permeable asphalt concrete 2(PAC-16C thickness is 5cm) of a lower layer and a fine grain type permeable asphalt concrete 1(PAC-13C thickness is 4cm) of an upper layer.
This application is applied to bituminous paving structure basic unit that permeates water with geotechnological check room, utilizes geotechnological check room's side limit restraint effect, is showing the road performance that improves the basic unit material that permeates water, improves mechanical properties such as pavement base bending resistance, shear, resistance to compression, can effectively prolong pavement structure's life, controls the structure disease on pitch class road surface.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A pavement structure capable of improving the strength of a permeable base layer is characterized by comprising a composite permeable bottom layer, a composite permeable base layer, a geogrid layer and a permeable surface layer which are sequentially laid from bottom to top;
The composite permeable base layer comprises geocells with set thickness and graded broken stones, and the geocells with set thickness and permeable concrete.
2. The pavement structure capable of improving strength of a water permeable base course according to claim 1, wherein the graded broken stones are arranged inside the geocell, and the height of the graded broken stones is greater than that of the geocell.
3. The pavement structure capable of improving the strength of the water permeable base course according to claim 2, wherein the paving height of the graded broken stones is 10-15 cm, and the height of the geocell outside the graded broken stones is 10 cm.
4. The pavement structure capable of improving strength of a water permeable base layer according to claim 1, wherein the water permeable concrete is disposed inside the geocell, and the height of the water permeable concrete is greater than the height of the geocell.
5. the pavement structure capable of improving the strength of the permeable base layer according to claim 4, wherein the permeable concrete is laid at a height of 10-15 cm, and the geocell height outside the permeable concrete is 10 cm.
6. A pavement structure capable of improving the strength of a water permeable base course according to claim 1, wherein the geogrid layer is a glass fiber grid.
7. The pavement structure capable of improving the strength of a water permeable base course according to claim 1, wherein the water permeable surface course is a water permeable asphalt surface course.
8. The pavement structure capable of improving the strength of the permeable base course according to claim 7, wherein the permeable asphalt surface course comprises a lower medium-grain type permeable asphalt concrete and an upper fine-grain type permeable asphalt concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204216.8U CN209741599U (en) | 2019-02-15 | 2019-02-15 | can improve road surface structure of basic unit intensity of permeating water |
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| CN201920204216.8U CN209741599U (en) | 2019-02-15 | 2019-02-15 | can improve road surface structure of basic unit intensity of permeating water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074720A (en) * | 2020-01-20 | 2020-04-28 | 湖南科技学院 | Water-permeable anti-cracking road structure and construction method thereof |
| CN111101419A (en) * | 2020-01-21 | 2020-05-05 | 河海大学 | Full water-permeable pavement structure suitable for large gradient |
| CN111962350A (en) * | 2020-09-18 | 2020-11-20 | 湖南科技大学 | Geocell reinforced cement concrete pavement structure and method for calculating thickness of surface slab |
-
2019
- 2019-02-15 CN CN201920204216.8U patent/CN209741599U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074720A (en) * | 2020-01-20 | 2020-04-28 | 湖南科技学院 | Water-permeable anti-cracking road structure and construction method thereof |
| CN111101419A (en) * | 2020-01-21 | 2020-05-05 | 河海大学 | Full water-permeable pavement structure suitable for large gradient |
| CN111101419B (en) * | 2020-01-21 | 2021-11-30 | 河海大学 | Full water-permeable pavement structure suitable for large gradient |
| CN111962350A (en) * | 2020-09-18 | 2020-11-20 | 湖南科技大学 | Geocell reinforced cement concrete pavement structure and method for calculating thickness of surface slab |
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