CN207739091U - Car lane road surface structure at a kind of bus stop - Google Patents
Car lane road surface structure at a kind of bus stop Download PDFInfo
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- CN207739091U CN207739091U CN201820053264.7U CN201820053264U CN207739091U CN 207739091 U CN207739091 U CN 207739091U CN 201820053264 U CN201820053264 U CN 201820053264U CN 207739091 U CN207739091 U CN 207739091U
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Abstract
The utility model is related to technical field of road engineering, more particularly to car lane road surface structure at a kind of bus stop, including the asphalt layer, cement concrete layer, cement stabilized macadam layer, fly ash lime stabilized crushed rock layer and the soil matrix that set gradually from top to bottom；The asphalt layer includes 25 asphalt layers of AC, the top of 25 asphalt layers of the AC is equipped with 16 asphalt layer of 13 asphalt layers of AC or AC, it is equipped with basalt aggregate in the asphalt layer and is either equipped with bituminous cements or modified pitch cementitious matter in the limestone aggregates asphalt layer.The utility model reduces the track of asphalt surface course, reflective crack, reduces road surface deflection.
Description
Technical field
The utility model is related to technical field of road engineering, more particularly to car lane road surface at a kind of bus stop
Structure.
Background technology
In recent years, country proposes Green Travel, first develops the urban public transport traffic measure important as one and obtains
To greatly developing.However due to the increase of bus quantity, heavy goods vehicles are more, especially in bus stop bituminous paving region
Frequently starting, and the vehicle residence time is long, not only under hot weather and automobile high-temperature tail gas double action under compressive property
Drop, is easily deformed, and is easy to the bituminous pavings breakoff phenomenon such as generate track, gather around packet, wave, crack, has seriously affected whole
The performance of a road.The region for above-mentioned disease occur all has a great impact to the comfortableness and security of driving, if not
It is handled in time, road recurring structure type may be caused to destroy.
Bus stop bituminous paving has the particularity of itself, different from urban intersection, the mainly axis stopped
Carry public transit vehicle larger, that the volume of traffic is more.Not only road pavement has prodigious vertical compression to these vehicular loads, can also satisfy the need
Face generates larger horizontal shear force, to cause pavement disease, especially track disease, the destruction journey of certain bus stop tracks
Degree is relatively serious, has not been that simple influence driving is comfortable so simple, if taking measures not in time, or even can cause driving thing
Therefore.
Usual bus stop bituminous paving follows car lane road surface structure, using semi-rigid asphalt pavement, this
Kind road surface is a kind of very universal Pavement Structure in China's urban road, since semi-rigid type base is made compared with asphalt surface course
Valence is low, and to adapt to national conditions, under " strong basis sake " guiding theory, semi-rigid asphalt pavement has played weight in road construction
The effect wanted.But during use at bus stop, it is tight that semi-rigid asphalt pavement also gradually shows some
The problem of weight：
(1) due to cement, lime or flyash class semi-rigid type base contraction (temperature contracting or drying shrinkage) property, inside it
Itself microfissure or crack are produced；Or the reasons such as road surface Lack of support, structure design be improper, base bottom surface are shunk
The tensile stress of generation is excessive, and caused accumulative fatigue will also result in the reflection crack on road surface.
(2) there is bleeding in soil layer or base's local weak, the continuous erosion through rainwater, and base's binder is constantly molten
Road table is lost and be extruded to, causes constantly coming to nothing for base, asphalt surface course also constantly sink with the loss of base material.
(3) easily there is early fatigue destruction under heavy duty, overload condition in Pavement on Semi-rigid Type Base.
Therefore, study car lane road surface structure at novel bus stop, reduce the track on road surface, reflection crack,
The fatigue rupture etc. of pavement depression and early stage, for improve road service life, ensure rider safety, save repair at
Originally construction, is facilitated all to have important practical significance.
Utility model content
The purpose of this utility model is to provide car lane road surface structure at a kind of bus stop, effectively reduces pitch
Track, the reflective crack of face layer, reduce road surface deflection, while meeting construction requirement.
The utility model uses following technical proposals：Car lane road surface structure at a kind of bus stop, including from upper
Asphalt layer, cement concrete layer, cement stabilized macadam layer, fly ash lime stabilized crushed rock layer and the soil matrix set gradually under；
The asphalt layer includes AC-25 asphalt layers, and the top of the AC-25 asphalts layer is dripped equipped with AC-13
Blueness mixes the bed of material or AC-16 asphalt layers, and basalt aggregate or limestone aggregates are equipped in the asphalt layer,
Bituminous cements or modified pitch cementitious matter are equipped in the asphalt layer.
Further, the thickness of the asphalt layer is 9-16cm.
Further, the thickness of the cement concrete layer is 20-24cm.
Further, the thickness of the cement stabilized macadam layer is 20-28cm.
Further, the thickness of the fly ash lime stabilized crushed rock layer is 18-20cm.
Further, the maximum particle diameter gathered materials in the cement concrete layer is less than 31.5mm.
Compared with prior art, the utility model has the beneficial effects that：
(1) the face layer of asphalt roads directly bears the effect of traffic load and experiences the variation of temperature, humidity to its performance
Influence, and directly influence the comfort of driving, safety, the utility model is mixed with AC-13, AC-16, AC-25 pitch
Material is used as asphalt layer, and the thickness of design face layer is 9-16cm, makes it have preferable high temperature stability performance, anti-low-temperature cracking
Performance, water stability, anti-fatigue performance, anti-aging property and ride comfort performance；And mixture is again by fine aggregate and miberal powder, drip
The thick matrix porosity of filling that green cementitious matter is formed, ensure that the intensity and durability of asphalt, improves bituminous paving
Resist the deformability of track.
(2) base of asphalt roads and underlayment are the main supporting courses on road surface, and the utility model is with cement concrete layer
As base, design thickness 20-24cm makes it have enough intensity, the performance of good Rut resistance and antifatigue cracking,
Maximum particle diameter gathering materials for 31.5mm is used, the anti-shearing deformability of mixture is preferably increased；With cement stabilized macadam
Layer is used as underlayment, and it is 20-28cm to design its thickness, and sufficiently large bearing capacity is provided for road surface.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is overall structure diagram in the utility model.
In figure, 1, asphalt layer；101, AC-13 asphalts layer；102, AC-25 asphalts layer；2, water
Cement concrete layer；3, cement stabilized macadam layer；4, fly ash lime stabilized crushed rock layer；5, soil matrix.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In a kind of typical embodiment of the application, as shown in Figure 1, providing car lane at a kind of bus stop
Pavement structure, including the asphalt layer 1, cement concrete layer 2, the cement stabilized macadam layer 3, two that set gradually from top to bottom
Grey stabilization gravel layer 4 and soil matrix 5；The asphalt layer 1 includes the AC-25 asphalts layer 102 as cutting optimal, institute
The top of AC-25 asphalts layer 102 is stated equipped with the AC-13 asphalts layer 101 as upper layer, the pitch mixing
It is equipped with basalt aggregate in the bed of material 1 and is either equipped with bituminous cements or modification in the limestone aggregates asphalt layer 1
Bituminous cements.
The mix-design of the cement concrete layer 2, concrete should draw slight experiment to determine according to the bending resistance of 28d ages
Cement dose, preferably 8%-12%.The mass percentage of cement is 3-5.5% in the cement stabilized macadam layer 3.The water
The mass percentage of cement is 4-5% in cement-stabilizing broken stone layer 3；The fly ash lime stabilized crushed rock layer 4 uses flyash, flyash
Middle SiO2、Al2O3And Fe2O3Gross mass percentage composition be more than 90%, loss on ignition be less than 4%.The modulus of resilience of the soil matrix 5 is big
In equal to 30MPa.
The thickness of the asphalt layer 1 is 9-16cm.The thickness of the cement concrete layer 2 is 20-24cm.It is described
The thickness of cement stabilized macadam layer 3 is 20-28cm.The thickness of the fly ash lime stabilized crushed rock layer 4 is 18-20cm.The cement is mixed
The maximum particle diameter gathered materials in solidifying soil layer 2 is less than 31.5mm.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. car lane road surface structure at a kind of bus stop, it is characterised in that：Including the pitch set gradually from top to bottom
Mix the bed of material, cement concrete layer, cement stabilized macadam layer, fly ash lime stabilized crushed rock layer and soil matrix；
The asphalt layer includes AC-25 asphalt layers, and the top of the AC-25 asphalts layer is equipped with AC-
13 asphalt layers or AC-16 asphalt layers.
2. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The pitch mixing
It is equipped with basalt aggregate in the bed of material and is either equipped with bituminous cements or modified drip in the limestone aggregates asphalt layer
Green cementitious matter.
3. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The pitch mixing
The thickness of the bed of material is 9-16cm.
4. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The coagulating cement
The thickness of the layer is 20-24cm.
5. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The cement stabilizing
The thickness of metalling is 20-28cm.
6. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The two ash stability
The thickness of metalling is 18-20cm.
7. car lane road surface structure at bus stop according to claim 1, it is characterised in that：The coagulating cement
The maximum particle diameter gathered materials in soil layer is less than 31.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053264.7U CN207739091U (en) | 2018-01-12 | 2018-01-12 | Car lane road surface structure at a kind of bus stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053264.7U CN207739091U (en) | 2018-01-12 | 2018-01-12 | Car lane road surface structure at a kind of bus stop |
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| Publication Number | Publication Date |
|---|---|
| CN207739091U true CN207739091U (en) | 2018-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820053264.7U Active CN207739091U (en) | 2018-01-12 | 2018-01-12 | Car lane road surface structure at a kind of bus stop |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080058A (en) * | 2019-05-16 | 2019-08-02 | 北京智华通科技有限公司 | A kind of surface layer structure and paving method of bus zone |
| CN110331632A (en) * | 2019-06-27 | 2019-10-15 | 东南大学 | A kind of method that limestone is used for double-layer drainage sub-surface structure |
| CN112921738A (en) * | 2021-01-31 | 2021-06-08 | 李现伟 | Highway pavement structure and construction method thereof |
| CN115029985A (en) * | 2022-03-31 | 2022-09-09 | 惠州学院 | Long-acting road structure |
-
2018
- 2018-01-12 CN CN201820053264.7U patent/CN207739091U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080058A (en) * | 2019-05-16 | 2019-08-02 | 北京智华通科技有限公司 | A kind of surface layer structure and paving method of bus zone |
| CN110331632A (en) * | 2019-06-27 | 2019-10-15 | 东南大学 | A kind of method that limestone is used for double-layer drainage sub-surface structure |
| CN110331632B (en) * | 2019-06-27 | 2021-01-26 | 东南大学 | Method for using limestone for lower layer structure of double-layer drainage pavement |
| CN112921738A (en) * | 2021-01-31 | 2021-06-08 | 李现伟 | Highway pavement structure and construction method thereof |
| CN115029985A (en) * | 2022-03-31 | 2022-09-09 | 惠州学院 | Long-acting road structure |
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