CN217324809U - Expansion eliminating groove for roads in gobi saline soil area - Google Patents
Expansion eliminating groove for roads in gobi saline soil area Download PDFInfo
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- CN217324809U CN217324809U CN202221246164.9U CN202221246164U CN217324809U CN 217324809 U CN217324809 U CN 217324809U CN 202221246164 U CN202221246164 U CN 202221246164U CN 217324809 U CN217324809 U CN 217324809U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a road construction field, concretely relates to a groove that expands that disappears for gobi salinized soil area road, run through the groove main part that expands that disappears of seting up in the road including equidistant, the groove main part that expands that disappears is including setting up the gravel seal on road bed upper strata, the packing has the flexile material layer above the gravel seal, the flexile material layer top is provided with the insulating layer, geogrid has been laid to the insulating layer top, the road surface course has been laid to the geogrid top, this scheme is through the groove that expands that disappears that is provided with the flexile material layer in the road, can carry out the elimination of certain degree to the inside produced stress because of temperature-salinity effect of road, thereby prevent that the horizontal bloated disease of encircleing from appearing in the road surface.
Description
Technical Field
The utility model relates to a road construction field, concretely relates to disappear bloated groove for gobi saline soil area road.
Background
In recent years, with the rapid development of the construction business of the road network in the inner Mongolia autonomous region, a road network which runs through east, west, south and north, Unicom Russian and Mongolia is gradually formed. However, in the area of the advanced kennel of the AlaEnhan, after 1-2 years of road construction, the semi-rigid base asphalt pavement is damaged in different degrees, and besides the common diseases of reflection cracks, loose spalling, hugging, rutting and the like of the asphalt pavement, a novel disease also appears, namely the transverse arch expansion of the asphalt pavement, and the transverse arch expansion of the pavement has serious adverse effect on the driving safety. According to investigation and research, the temperature-salt combined action in the road structure enables the internal stress of the cement stabilized macadam to be unable to be released, and the salt expansion action of the base layer and the roadbed is an important factor for initiating the road arch expansion in the area. In the past, the research on the disease control of the asphalt pavement is usually specific to the asphalt surface layer, and the research is specially carried out on the control of the transverse arch expansion of the asphalt pavement in the area.
Therefore, a pavement structure suitable for gobi saline soil areas needs to be designed to avoid the problem of the pavement that the asphalt pavement is arched and expanded due to the expansion of the semi-rigid base layer under the combined action of temperature and salt.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned among the prior art, the utility model provides a bloated groove that disappears for gobi saline soil area road has solved the road in this region and can appear transversely encircleing bloated problem.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
the utility model provides a groove that expands that disappears for gobi saline soil area road, run through the groove main part that expands that disappears of seting up in the road including equidistant, the groove main part that expands that disappears is including setting up the gravel seal on the road bed upper strata, and gravel seal top is filled has the flexible material layer, and the flexible material layer top is provided with the insulating layer, and geogrid has been laid to the insulating layer top, and the road surface course has been laid to the geogrid top.
The gravel seal that this scheme set up can play the effect of cutting off salinity migration, reduce the basic unit, soil matrix salt effect of expanding, the insulating layer can reduce and cause harmful effects to the physiosis cold contraction because of cold and hot production in turn to the physiosis main part, and the speed that the salinity migrated has been slowed down, the setting up of flexible material layer makes the road can carry out the release of certain degree because of the temperature, the stress that the salinity arouses down, thereby the risk that the production encircleed is reduced, geogrid's setting can improve the groove bearing capacity that expands that disappears, prevent that the road surface from collapsing or producing the crackle.
According to the scheme, the flexible material layer preferably comprises a graded broken stone layer, an asphalt and crushed stone mixed material layer is laid on one side, away from the heat insulation layer, of the graded broken stone layer, before the asphalt and crushed stone mixed material layer is laid, a modified emulsified asphalt layer for enhancing adhesion between the asphalt and crushed stone mixed material layer and the graded broken stone layer is sprayed on the laying surface of the asphalt and crushed stone mixed material layer, and the graded broken stone has good stress dispersion capacity, inhibits reflection cracks and slows down cracks of an asphalt pavement; the asphalt macadam mixture has strong toughness, certain self-healing capacity, high shear resistance, high bending tensile strength and high fatigue resistance, and can inhibit reflection cracks.
The road surface layer comprises an upper surface layer, a middle surface layer, a lower surface layer, the upper surface layer, the middle surface layer and the lower surface layer are made of AC20 dense medium-grain asphalt concrete and ATB-25 dense-graded asphalt stabilized macadam respectively, the AC20 dense medium-grain asphalt concrete has the advantages of being dense, waterproof and high in shearing resistance, the ATB25 dense-graded asphalt stabilized macadam has the advantages of being anti-rutting and capable of inhibiting reflection cracks, meanwhile, the anti-shear, bending tensile strength and fatigue resistance are high, and the material selected for the upper surface layer is the same as the material selected for the road surfaces on the two sides of the expansion tank.
Preferably, the thickness of the heat insulation layer is 3-5cm, the selected material is a polyurethane foam plate, the cost is low, meanwhile, the heat insulation layer can play a good heat insulation role, and the heat insulation layer has certain strength.
Further, the width of the expansion eliminating groove main bodies is 0.5-1 m, and the distance between every two adjacent expansion eliminating groove main bodies is 100-200 m.
The specification of the selected material of the asphalt-gravel mixture layer is ATB-25 dense-graded asphalt stabilized macadam.
The utility model has the advantages that:
through setting up the groove that expands that disappears that has the flexible material layer, can carry out the elimination of certain degree to the road because of the stress that temperature, salinity effect arouse, reduced the regional road production of gobi saline soil and encircleed bloated risk.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, an expansion tank main body, 2, a road surface layer, 201, an upper surface layer, 202, a middle surface layer, 203, a lower surface layer, 3, a road base layer, 4, a flexible material layer, 5, a geogrid, 6, an asphalt-gravel mixed material layer, 7, a graded gravel layer, 8, a heat insulation layer, 9 and a gravel seal layer.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
As shown in fig. 1, the expansion tank for gobi saline soil area road that this scheme provided runs through the expansion tank main part 1 of seting up in the road including equidistant, and expansion tank main part 1 is including setting up the gravel seal 9 on the road bed upper strata, and gravel seal 9 top packing has flexible material layer 4, and flexible material layer 4 top is provided with the insulating layer, and geogrid 5 has been laid to the insulating layer top, and the road surface course has been laid to geogrid 5 top.
Gravel seal 9 set up and can separate the salt migration of road surface of circuit base, reduce the basic unit, soil matrix salt expansion effect, insulating layer 8 can reduce and cause harmful effects to the expansion tank main part 1 because of the expend with heat and contract with cold that cold and hot production in turn, and the speed that the salt migrated has been slowed down, flexible material layer 4's setting makes the road can be because of the temperature, the stress that arouses under the salt effect carries out the release of certain degree, thereby the risk that the production arch expands has been reduced, geogrid 5's setting can improve the bearing capacity of expansion tank main part 1, prevent that the road surface from collapsing or producing the crackle.
Preferably, the flexible material layer 4 comprises a graded gravel layer 7, an asphalt-gravel mixture layer 6 is laid on one side, away from the heat insulation layer 8, of the graded gravel layer 7, before the asphalt-gravel mixture layer 6 is laid, modified emulsified asphalt for enhancing the adhesion between the asphalt-gravel mixture layer and the graded gravel layer 7 is sprayed on the laying surface of the graded gravel layer, and the graded gravel has good stress dispersion capacity, inhibits reflection cracks and slows down the generation of cracks on the asphalt pavement; the asphalt macadam mixture has strong toughness, certain self-healing capacity, high shear resistance, high bending tensile strength and high fatigue resistance, and can inhibit reflection cracks.
The road surface comprises an upper surface layer 201, a middle surface layer 202, a lower surface layer 203, the upper surface layer 201, the middle surface layer 202 and the lower surface layer 203 are made of AC20 dense medium-grain asphalt concrete and ATB-25 dense graded asphalt stabilized macadam respectively, the AC20 dense medium-grain asphalt concrete has the advantages of being dense, waterproof and high in shearing resistance, the ATB25 dense graded asphalt stabilized macadam has the characteristics of rutting resistance and reflection crack inhibition, and has high shearing resistance, bending tensile strength and fatigue resistance, and the material selected for the upper surface layer 201 is the same as the material selected for the pavements on two sides of the expansion tank.
Preferably, the thickness of the heat insulation layer 8 is 3-5cm, the selected material is a polyurethane foam board, the polyurethane foam board has a good heat insulation effect and a certain strength, and the cost of the polyurethane foam board is low.
The width of the expansion-eliminating groove body 1 is 0.5-1 m, the distance between two adjacent expansion-eliminating groove bodies 1 is 100-200 m, the number of the expansion-eliminating grooves is reduced as far as possible, and the requirement for eliminating the internal stress of the road is met.
According to the scheme, the expansion slot 1 is preferably arranged every 200m, and the width of the expansion slot 1 is 0.5 m.
The material specification of the asphalt-gravel mixture layer 6 is ATB-25 dense-graded asphalt stabilized macadam.
The use of the expansion slot for roads in the saline soil area of gobi provided by the scheme is described in the following with reference to fig. 1:
a through groove with the width of 0.5m and the depth penetrating through the whole road base layer is formed in the road every 200m, the through groove is vertical to the central line of the road and horizontal, two ends of the through groove extend to the lower part of a road shoulder, a gravel sealing layer 9 with a certain thickness is filled in the through groove, a flexible material layer 4 is filled above the gravel sealing layer 9 after leveling, a heat insulation layer 8 is laid above the gravel sealing layer after compaction, a geogrid 5 is laid above the heat insulation layer 8, and finally a road surface layer 2 is laid above the geogrid 5.
To sum up, the utility model discloses an offer the bloated groove that disappears that has the flexible material layer in the road, can make the inside stress that produces because of the temperature-salinity effect of road obtain the release of certain degree to prevent that the road surface from appearing transversely encircleing bloated disease.
Claims (6)
1. The utility model provides an expansion tank that disappears for gobi saline soil area road, its characterized in that runs through expansion tank main part (1) of seting up in the road including equidistant, expansion tank main part (1) is including setting up gravel seal (9) on the road bed upper strata, gravel seal (9) top packing has flexible material layer (4), flexible material layer (4) top is provided with insulating layer (8), geogrid (5) have been laid to insulating layer (8) top, road surface layer (2) have been laid to geogrid (5) top.
2. The dilatation channel for roads in gobi saline soil areas according to claim 1, characterized in that the flexible material layer (4) comprises a graded gravel layer (7), and the side of the graded gravel layer (7) far away from the thermal insulation layer (8) is paved with an asphalt-gravel mixture layer (6).
3. The swelling tank for roads in gobi saline soil areas according to claim 1, wherein said road surface course (2) comprises an upper surface course (201), a middle surface course (202) and a lower surface course (203), and said upper surface course (201), middle surface course (202) and lower surface course (203) are selected from SMA13 asphalt mastic macadam, AC20 dense medium-grained asphalt concrete and ATB-25 dense-graded asphalt stabilized macadam, respectively.
4. The degating cell for roads in gobi saline soil areas according to claim 1, characterized in that the thickness of the thermal insulation layer (8) is 3-5cm, and the selected material is polyurethane foam board.
5. The expansion tank for roads in gobi saline soil areas according to claim 1, characterized in that the width of the expansion tank body (1) is 0.5-1 m, and the distance between two adjacent expansion tank bodies (1) is 100-200 m.
6. The expansion tank for roads in gobi saline soil areas according to claim 2, characterized in that the material of the bituminous-macadam mixture layer (6) is ATB-25 dense-graded bituminous-stabilized macadam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221246164.9U CN217324809U (en) | 2022-05-20 | 2022-05-20 | Expansion eliminating groove for roads in gobi saline soil area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221246164.9U CN217324809U (en) | 2022-05-20 | 2022-05-20 | Expansion eliminating groove for roads in gobi saline soil area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217324809U true CN217324809U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221246164.9U Active CN217324809U (en) | 2022-05-20 | 2022-05-20 | Expansion eliminating groove for roads in gobi saline soil area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217324809U (en) |
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2022
- 2022-05-20 CN CN202221246164.9U patent/CN217324809U/en active Active
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