CN112853841A - Highway subgrade and construction method thereof - Google Patents
Highway subgrade and construction method thereof Download PDFInfo
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- CN112853841A CN112853841A CN202110048800.0A CN202110048800A CN112853841A CN 112853841 A CN112853841 A CN 112853841A CN 202110048800 A CN202110048800 A CN 202110048800A CN 112853841 A CN112853841 A CN 112853841A
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- open pipe
- pipe
- foundation
- open
- tamping
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a highway subgrade and a construction method thereof, and relates to the technical field of subgrades. This highway road bed, including the tamping foundation, the surface of tamping foundation is provided with first opening pipe and second opening pipe, the opening part fixedly connected with second wire net of first opening pipe and second opening pipe, the surface coating of second wire net has the plastic foam layer, first opening pipe and second opening pipe vertical fixation, fixedly connected with fixed plate between the first opening pipe. The open pipe framework is fixed on the rammed foundation in an anchoring mode, after stones are paved and filled, the first steel wire meshes act with the gravel, the stability of installation of the open pipe framework is improved, shock absorption can also be carried out, gaps of gravel layers can provide deformation spaces for cold and hot deformation of highways, photoelectric communication lines can be arranged in the open pipe framework, asphalt pavements can be cooled after water is injected, and the open pipe framework can be used for draining water.
Description
Technical Field
The invention relates to the technical field of roadbed, in particular to a highway roadbed and a construction method thereof.
Background
The highway is suitable for the development of industrialization and urbanization. The city is an industrial and population gathering place, the automobile growth is far faster than the countryside, the city becomes an automobile gathering center, and the construction of the expressway is started from urban loops, radiation roads and busy road sections, and gradually becomes urban traffic taking the expressway as the backbone. The roadbed is the foundation of the expressway, is a civil structure formed by excavation or filling and is used for bearing dynamic and static loads generated by vehicles acting on the road surface.
Because the road surface of present highway is generally the asphalt pavement, can produce the deformation because expend with heat and contract with cold like this in summer and winter because the road surface can appear unevenness to and the easy rainwater that silts up makes the vehicle meet accident, still can enlarge unsmooth degree under the effect of vehicle, and then makes the road surface damage, extravagant a large amount of amount maintenance costs.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an expressway subgrade and a construction method thereof, and solves the problems that the existing expressway subgrade can deform to form uneven positions due to thermal expansion and cold contraction, and not only can rainwater be deposited, but also can be gradually damaged under the action of vehicles.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a highway subgrade comprises a tamped foundation, wherein a first open pipe and a second open pipe are arranged on the surface of the tamped foundation, a second steel wire mesh is fixedly connected to openings of the first open pipe and the second open pipe, a plastic foam layer is wrapped on the surface of the second steel wire mesh, the first open pipe and the second open pipe are vertically fixed, a fixing plate is fixedly connected between the first open pipe and the second open pipe, an anchoring hole penetrates through the middle of the fixing plate, an anchor rod is arranged in the anchoring hole, a gasket and a nut are arranged on the outer surface of the anchor rod, the lower end of the anchor rod extends into the tamped foundation, a fixing ring is fixedly connected among the first open pipe, the second open pipe and the fixing plate, and the inner side surface of the fixing ring is fixedly connected with the first steel wire mesh;
the upper surface of the tamping foundation is provided with a gravel sublayer, and one side of the gravel sublayer, which is far away from the tamping foundation, is provided with an asphalt pavement.
Preferably, the fixing plate and the second open pipe are arranged in parallel and are distributed at intervals and equal intervals.
Preferably, the gravel layer wraps the upper ends of the first open pipe, the second open pipe, the fixing ring, the first steel wire mesh, the nut, the fixing plate, the gasket and the anchor rod.
Preferably, the gasket is located the upper surface of fixed plate, the nut is located the top of gasket and with stock threaded connection.
Preferably, the lower surface of the fixing plate is flush with the lower surfaces of the first open pipe and the second open pipe, and the joint of the two ends of the fixing plate and the first open pipe is wrapped by at least two thirds of the height of the first open pipe.
Preferably, the interiors of the first open pipe and the second open pipe are communicated with each other, and the upper surface of the plastic foam layer wrapped with the second steel wire mesh is level with the upper surfaces of the first open pipe and the second open pipe.
A construction method of highway subgrade comprises the following construction processes:
the method comprises the following steps: road surface tamping
Rolling and tamping the construction ground by using a large road roller to form a tamped foundation;
step two: fixed open pipe
After the first open pipe and the second open pipe are arranged on a tamping foundation, the anchor rod is inserted from the anchoring hole, and after the gasket is arranged, the upper end of the anchor rod is fixed by using a nut, so that the first open pipe and the second open pipe are fixed on the tamping foundation from the fixing plate;
step three: paving and filling stone
Paving and filling the stones on the fixed first open pipe and the second open pipe, vibrating the vibrators from the first open pipe and the second open pipe in the paving and filling process to promote the stones to be paved and filled tightly, and then rolling the stones by using a small road roller to form a gravel layer;
step four: asphalt
Paving an asphalt pavement on the surface of the gravel sub-layer by using an asphalt paver, and then rolling and flattening by using a small-sized roller;
step five: flame-fired plastic foam layer
And introducing natural gas from the positions, not covered by asphalt, of the ends of the first open pipe and the second open pipe, igniting, and immediately starting water injection after combustion, wherein the height of the injected water is not more than one half of the height of the first open pipe and the second open pipe.
Preferably, the combustion of the plastic foam layer by the flame process is incomplete combustion.
(III) advantageous effects
The invention provides a highway subgrade and a construction method thereof. The method has the following beneficial effects:
1. according to the invention, the open pipe framework is fixed on the rammed foundation in an anchoring mode, after stones are paved and filled, the first steel wire mesh and the gravel act, the mounting stability of the open pipe framework is improved, the gaps of the gravel layers can provide deformation space for the cold and hot deformation of the highway, photoelectric communication lines can be arranged in the open pipe framework, the asphalt pavement can be cooled after water is injected, and the open pipe framework can be used for draining water.
2. According to the invention, the plastic foam layer wrapped with the second steel wire mesh supports the asphalt pavement laying surface, and the plastic foam layer is burnt by using a flame burning method after the asphalt pavement laying is finished, so that the asphalt pavement is conveniently cooled by water in the open pipe framework.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a plastic foam layer connection of the present invention;
FIG. 3 is a top view of the open tube architecture of the present invention;
FIG. 4 is a schematic view of a split-tube building structure of the present invention;
FIG. 5 is a top plan view of the open pipe construction of the present invention;
figure 6 is a bottom view of the open pipe set up of the present invention.
Wherein, 1, tamping the foundation; 2. a first open tube; 3. a second open tube; 4. a plastic foam layer; 5. a fixing ring; 6. asphalt pavement; 7. a first steel wire mesh; 8. a macadam sublayer; 9. a nut; 10. a fixing plate; 11. a gasket; 12. an anchor rod; 13. an anchoring hole; 14. and the second steel wire mesh.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-6, an embodiment of the present invention provides an expressway subgrade, which includes a compacted foundation 1, a first open pipe 2 and a second open pipe 3 are disposed on the surface of the compacted foundation 1, and an optical communication circuit can be disposed therein, the compacted foundation 1 can be cooled after being filled with water, and can be used to discharge rainwater deposited on an expressway, a second steel wire mesh 14 is fixedly connected to the openings of the first open pipe 2 and the second open pipe 3, and supports the first open pipe 2 and the second open pipe 3, a plastic foam layer 4 is wrapped on the surface of the second steel wire mesh 14, and plays a temporary support to ensure that construction can be smoothly completed, the first open pipe 2 and the second open pipe 3 can be gradually melted under the action of high temperature of the asphalt pavement 6, a fixing plate 10 is fixedly connected between the first open pipe 2, the fixing plate 10 and the second open pipe 3 are disposed in parallel, and spaced at equal intervals, the lower surface of the fixing plate 10 is level with the lower surfaces of the first open pipe 2 and the second open pipe 3, the joint of the two ends of the fixing plate 10 and the first open pipe 2 at least wraps the two-thirds height of the first open pipe 2 for ensuring the connection strength, an anchoring hole 13 penetrates through the middle part of the fixing plate 10, an anchor rod 12 is arranged in the anchoring hole 13, the length and the anchoring depth of the anchor rod 12 can be adjusted according to the condition of a construction foundation, the minimum embedding depth is 0.4m, a gasket 11 and a nut 9 are arranged on the outer surface of the anchor rod 12, the gasket 11 is positioned on the upper surface of the fixing plate 10, the nut 9 is positioned above the gasket 11 and is in threaded connection with the anchor rod 12, the lower end of the anchor rod 12 extends into the tamping foundation 1, a fixing ring 5 is fixedly connected between the first open pipe 2, the second open pipe 3 and the fixing plate 10, a first steel wire mesh 7 is fixedly connected on the inner side surface, the gap between the gravel layer 8 and the gravel layer 8 can provide a deformation space for the cold and hot deformation of the highway, and the stability of the installation of the first open pipe 2 and the second open pipe 3 can be improved, and the shock absorption can also be carried out;
the upper surface of tamping foundation 1 is provided with rubble sublayer 8, and rubble sublayer 8 wraps up the upper end of first open pipe 2, second open pipe 3, solid fixed ring 5, first wire net 7, nut 9, fixed plate 10, gasket 11 and stock 12 in it, and a side of rubble sublayer 8 keeping away from tamping foundation 1 is provided with asphalt pavement 6.
The inside of first open pipe 2 and second open pipe 3 communicates each other, and the lower bottom surface of first open pipe 2 and second open pipe 3 is the level, provides the action face with tamp ground 1, reduces the pressure to tamp ground 1, and the upper surface that the parcel has second wire net 14's foam layer 4 is level with the upper surface of first open pipe 2 and second open pipe 3 mutually.
A construction method of highway subgrade comprises the following construction processes:
the method comprises the following steps: road surface tamping
Rolling and tamping the construction ground by using a large road roller to form a tamped foundation 1, ensuring the tamping foundation 1 to be flat as much as possible, and reducing the gradient to the maximum extent at the position with the gradient;
step two: fixed open pipe
After the first open pipe 2 and the second open pipe 3 are arranged on the tamping foundation 1, the anchor rod 12 is inserted from the anchoring hole 13, and after the gasket 11 is padded, the upper end of the anchor rod 12 is fixed by using the nut 9, so that the first open pipe 2 and the second open pipe 3 are fixed on the tamping foundation 1 from the fixing plate 10, and the first open pipe 2, the second open pipe 3 and the tamping foundation 1 are integrated;
step three: paving and filling stone
Paving and filling the stones on the fixed first open pipe 2 and the fixed second open pipe 3, vibrating a vibrator from the first open pipe 2 and the second open pipe 3 in the paving and filling process to enable the stones to be paved and filled tightly and reduce gaps among broken stones, so as to prevent the roadbed of the highway from collapsing in the vehicle rolling process, then rolling the stones by using a small-sized road roller to form a broken stone layer 8, wherein the broken stones can enter the lower part of the first steel wire mesh 7 from the pores of the first steel wire mesh 7 and tension the first steel wire mesh 7;
step four: asphalt
Paving an asphalt pavement 6 on the surface of the gravel layer 8 by using an asphalt paver, and then rolling and leveling by using a small-sized roller;
step five: flame-fired plastic foam layer
Natural gas is introduced from the positions, not covered by the asphalt pavement 6, of the end parts of the first open pipe 2 and the second open pipe 3, then ignition is carried out, the process is incomplete combustion, the plastic foam layer 4 is naturally and slowly melted by high temperature of sun exposure in the using process of the expressway, water injection is started immediately after combustion, the phenomenon that the temperature is too high due to combustion in the first open pipe 2 and the second open pipe 3, the height of the injected water is not more than half of the height of the first open pipe 2 and the second open pipe 3 is avoided, therefore, heat of the asphalt pavement 6 can be absorbed under the action of water, and when the heat is transferred to the gravel sublayer 8, gaps are reserved between the gravel particles, and therefore, the thermal deformation of the asphalt pavement 6 is minimum.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a highway road bed, includes the tamped ground, its characterized in that: the surface of the rammed foundation is provided with a first open pipe and a second open pipe, the opening parts of the first open pipe and the second open pipe are fixedly connected with a second steel wire mesh, the surface of the second steel wire mesh is wrapped with a plastic foam layer, the first open pipe and the second open pipe are vertically fixed, a fixing plate is fixedly connected between the first open pipes, an anchoring hole penetrates through the middle part of the fixing plate, an anchor rod is arranged inside the anchoring hole, a gasket and a nut are arranged on the outer surface of the anchor rod, the lower end of the anchor rod extends into the rammed foundation, a fixing ring is fixedly connected among the first open pipe, the second open pipe and the fixing plate, and the inner side surface of the fixing ring is fixedly connected with the first steel wire mesh;
the upper surface of the tamping foundation is provided with a gravel sublayer, and one side of the gravel sublayer, which is far away from the tamping foundation, is provided with an asphalt pavement.
2. An expressway road bed according to claim 1, wherein: the fixed plate and the second open pipe are arranged in parallel and are distributed at intervals and equal intervals.
3. An expressway road bed according to claim 1, wherein: the gravel layer wraps the upper ends of the first open pipe, the second open pipe, the fixing ring, the first steel wire mesh, the nut, the fixing plate, the gasket and the anchor rod.
4. An expressway road bed according to claim 1, wherein: the gasket is located the upper surface of fixed plate, the nut is located the top of gasket and with stock threaded connection.
5. An expressway road bed according to claim 1, wherein: the lower surface of the fixing plate is level with the lower surfaces of the first open pipe and the second open pipe, and the joint of the two ends of the fixing plate and the first open pipe is at least wrapped by two thirds of the height of the first open pipe.
6. An expressway road bed according to claim 1, wherein: the interiors of the first open pipe and the second open pipe are communicated with each other, and the upper surface of the plastic foam layer wrapped with the second steel wire mesh is level with the upper surfaces of the first open pipe and the second open pipe.
7. A construction method of highway subgrade is characterized by comprising the following construction processes:
the method comprises the following steps: road surface tamping
Rolling and tamping the construction ground by using a large road roller to form a tamped foundation;
step two: fixed open pipe
After the first open pipe and the second open pipe are arranged on a tamping foundation, the anchor rod is inserted from the anchoring hole, and after the gasket is arranged, the upper end of the anchor rod is fixed by using a nut, so that the first open pipe and the second open pipe are fixed on the tamping foundation from the fixing plate;
step three: paving and filling stone
Paving and filling the stones on the fixed first open pipe and the second open pipe, vibrating the vibrators from the first open pipe and the second open pipe in the paving and filling process to promote the stones to be paved and filled tightly, and then rolling the stones by using a small road roller to form a gravel layer;
step four: asphalt
Paving an asphalt pavement on the surface of the gravel sub-layer by using an asphalt paver, and then rolling and flattening by using a small-sized roller;
step five: flame-fired plastic foam layer
And introducing natural gas from the positions, not covered by asphalt, of the ends of the first open pipe and the second open pipe, igniting, and immediately starting water injection after combustion, wherein the height of the injected water is not more than one half of the height of the first open pipe and the second open pipe.
8. The construction method of the highway subgrade according to claim 7, characterized in that: the combustion of the plastic foam layer by the flame process is incomplete combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110048800.0A CN112853841A (en) | 2021-01-14 | 2021-01-14 | Highway subgrade and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110048800.0A CN112853841A (en) | 2021-01-14 | 2021-01-14 | Highway subgrade and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112853841A true CN112853841A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110048800.0A Pending CN112853841A (en) | 2021-01-14 | 2021-01-14 | Highway subgrade and construction method thereof |
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| CN (1) | CN112853841A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US728689A (en) * | 1902-10-13 | 1903-05-19 | Max Am Ende | Fastening device for wire ropes. |
| CN2323019Y (en) * | 1997-09-30 | 1999-06-09 | 哈尔滨第四塑料厂 | Combined plastic slope protection drainage tray |
| CN203890829U (en) * | 2014-04-29 | 2014-10-22 | 长安大学 | Drainage facility of porous asphalt pavement |
| EP3071753A1 (en) * | 2013-10-02 | 2016-09-28 | Stabilco Intellectual Property Limited | A mixture for a road formation and methods for blending and compaction thereof |
| CN106192666A (en) * | 2016-07-21 | 2016-12-07 | 上海豫景科技有限公司 | A kind of permeable mortar and utilize the porous pavement that permeable mortar makes |
-
2021
- 2021-01-14 CN CN202110048800.0A patent/CN112853841A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US728689A (en) * | 1902-10-13 | 1903-05-19 | Max Am Ende | Fastening device for wire ropes. |
| CN2323019Y (en) * | 1997-09-30 | 1999-06-09 | 哈尔滨第四塑料厂 | Combined plastic slope protection drainage tray |
| EP3071753A1 (en) * | 2013-10-02 | 2016-09-28 | Stabilco Intellectual Property Limited | A mixture for a road formation and methods for blending and compaction thereof |
| CN203890829U (en) * | 2014-04-29 | 2014-10-22 | 长安大学 | Drainage facility of porous asphalt pavement |
| CN106192666A (en) * | 2016-07-21 | 2016-12-07 | 上海豫景科技有限公司 | A kind of permeable mortar and utilize the porous pavement that permeable mortar makes |
Non-Patent Citations (2)
| Title |
|---|
| 李丽民等: "《道路工程》", 31 March 2017 * |
| 胡玉洁等: "《材料加工原理及工艺学聚合物材料分册》", 30 April 2017 * |
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Application publication date: 20210528 |
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