CN104141270B - Administer strengthening structure part and the construction Craft of asphalt pavement rut disease - Google Patents
Administer strengthening structure part and the construction Craft of asphalt pavement rut disease Download PDFInfo
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- CN104141270B CN104141270B CN201410352947.9A CN201410352947A CN104141270B CN 104141270 B CN104141270 B CN 104141270B CN 201410352947 A CN201410352947 A CN 201410352947A CN 104141270 B CN104141270 B CN 104141270B
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- 238000005728 strengthening Methods 0.000 title claims abstract description 147
- 239000010426 asphalt Substances 0.000 title claims abstract description 56
- 201000010099 disease Diseases 0.000 title claims abstract description 41
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000003801 milling Methods 0.000 claims abstract description 77
- 239000000470 constituent Substances 0.000 claims abstract description 52
- 239000003351 stiffener Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 230000001413 cellular effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 11
- 101000856234 Clostridium acetobutylicum (strain ATCC 824 / DSM 792 / JCM 1419 / LMG 5710 / VKM B-1787) Butyrate-acetoacetate CoA-transferase subunit A Proteins 0.000 claims description 5
- 101000856236 Clostridium acetobutylicum (strain ATCC 824 / DSM 792 / JCM 1419 / LMG 5710 / VKM B-1787) Butyrate-acetoacetate CoA-transferase subunit B Proteins 0.000 claims description 5
- 239000010410 layer Substances 0.000 abstract description 45
- 239000002344 surface layer Substances 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 4
- 238000011069 regeneration method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 239000004677 Nylon Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 239000002131 composite material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 206010061819 Disease recurrence Diseases 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009490 roller compaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention discloses a kind of strengthening structure part and construction Craft of administering asphalt pavement rut disease, described strengthening structure part is made up of adapter, stiffener and auxiliary switching cap three part, be assembled into regular hexagon strengthening structure part unit by inserting mode, multiple strengthening structure part unit forms a cellular strengthening structure part constituent element; Adopt the construction Craft of this strengthening structure part to comprise: S1, according to the surface thickness determination milling degree of depth of flexible pavement, milling is carried out to treadway payment; S2, the road surface after milling is coated with and spreads tack coat, assembling strengthening structure part constituent element, and on tack coat, lay strengthening structure part constituent element; S3, by bituminous mixture laying in strengthening structure part constituent element, paves, rolls cutting optimal; S4, paves, rolls upper layer.Structural member of the present invention uses flexible, widely applicable, the load that energy dispersed bitumens bear, strengthening flexible pavement, and the stream of constraint surface layer pitch becomes, and can ensure the regeneration of pitch.
Description
Technical field
The present invention relates to a kind of strengthening structure part and construction Craft of administering asphalt pavement rut disease, belong to urban road and highway engineering technical field.
Background technology
Asphalt roads structure is made up of (see Figure 20) surface layer, basic unit, subbase and roadbed, is generally 7-18cm according to category of roads surface thickness, and surface layer is the level bearing shear stress and the change of pitch stream occurs, and asphalt roads rut occurs in surface layer.Rut is the distinctive a kind of mode of failure of flexible pavement, directly endangers the quality on road surface, reduces the application life on road surface, harm traffic safety.The economic loss that rut disease causes and social influence is huge, the mind that becomes highway construction person and maintenance person pain.
At present mainly based on modified bitumen, the continuous close-graded of surface layer and improve the chain and inner frictional resistance scheduling theory of embedded squeezing between surface layer and practice, by adopting: (1) micro-surface area fills up technology; (2) milling plucking technology; (3) milling overlays technology and administers rut disease.But rut disease is not effectively contained, administer asphalt pavement rut disease and recurrence and be still the arduousness and ubiquitous problem that we face.
Summary of the invention
The object of the invention is to, a kind of strengthening structure part and construction Craft of administering asphalt pavement rut disease are provided, this structural member uses flexible, widely applicable, can dispersed bitumens bear load, strengthening flexible pavement, constraint surface layer pitch stream become, the regeneration of pitch can be ensured.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of strengthening structure part administering asphalt pavement rut disease, be made up of adapter, stiffener and auxiliary switching cap three part, be assembled into regular hexagon strengthening structure part unit by inserting mode, multiple strengthening structure part unit forms a cellular strengthening structure part constituent element.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, adapter is provided with three edge groove A and central recess A, and the angle between neighboring edge groove A is 120 °; Edge groove A cross section is trapezoidal, and central recess A cross section is equilateral triangle, is provided with a projection A in the one side relative with central recess A, and projection A and central recess A cooperatively interacts.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, auxiliary switching cap is provided with three edge groove B and central recess B, and the angle between neighboring edge groove B is 120 °; Edge groove B cross section is trapezoidal, and central recess B cross section is equilateral triangle, and edge groove B is identical with the size of edge groove A, and central recess B is identical with the size of central recess A, and central recess B and projection A cooperatively interacts.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, the opposite end of stiffener is respectively provided with the projection B matched with edge groove A, and it is semicircular through hole that stiffener is also provided with a cross section, and the center line of described through hole and stiffener is tangent.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, the cross section of edge groove A, B is trapezoidal, one is the location being conducive to adapter, auxiliary switching cap and stiffener, ensure size and the geometric shape of strengthening structure part unit and constituent element, two is to make adapter, auxiliary switching cap and stiffener not easily separated when tension stress; The cross section of central recess A, B is equilateral triangle, accurate positioning when can make adapter grafting, avoids the edge groove B dislocation of the edge groove A of upper and lower adapter during adapter grafting or auxiliary switching cap and causes stiffener cannot the problem of grafting.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, described regular hexagon strengthening structure part unit is assembled by inserting mode by six adapters, six stiffeners and six auxiliary switching caps, and multiple strengthening structure part unit forms cellular one deck strengthening structure part constituent element.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, described regular hexagon strengthening structure part unit is assembled by inserting mode by six adapters, 12 stiffeners and six auxiliary switching caps, and multiple strengthening structure part unit forms a cellular two-layer strengthening structure part constituent element.
In the strengthening structure part of aforesaid improvement asphalt pavement rut disease, adapter, stiffener and auxiliary switching cap all adopt the strengthening nylon composite materials containing 25% glass fiber, and are made by injection molding technology.
Vicat softening point method of testing is adopted to measure the heat resistance of the strengthening nylon composite materials after adding 25% glass fiber, specific as follows:
(1) the RRHDV4 type Vicat softening point instrument adopting Britain RAY-RAN company to produce measures, and according to GB/T1634-2 standard, test condition is 120 DEG C/h, A, pure nylon softening point is 73 DEG C, and glass fiber-reinforced nylon softening point is 113 DEG C;
(2) heat resistance of the strengthening plate hardness at different temperatures manufactured containing 25% glass fiber-reinforced nylon composite materials is measured, evaluate the non-deformability under this composite material different temperatures: under room temperature, hardness is 36.46HBW/500/10, the hardness 36.14HBW/500/10 at 160 DEG C of temperature.
Result of the test shows, hardness when material hardness when 160 DEG C and room temperature is substantially identical, thus show that temperature tolerance containing the strengthening nylon composite materials of 25% glass fiber is higher than 160 DEG C, and bituminous mixture laying, temperature about 140 DEG C when rolling, therefore, strengthening structure part can meet asphalt pavement construction requirement.
Adopt an asphalt pavement construction technique for the strengthening structure part of aforementioned improvement asphalt pavement rut disease, comprise the following steps:
S1, according to the surface thickness determination milling degree of depth of flexible pavement, carries out milling to treadway payment;
S2, the road surface after milling is coated with and spreads tack coat, assemble strengthening structure part constituent element, and on tack coat, lay strengthening structure part constituent element according to milling area (the milling degree of depth and milling width);
S3, by bituminous mixture laying in strengthening structure part constituent element, asphalt paving thickness is determined according to pitch particle diameter, compacting ratio, during bituminous mixture compacting construction, the compacting ratio of the short transverse of the bituminous mixture of different-grain diameter is about 97%, paving thickness and roll rear height should slightly larger than the height of strengthening structure part, during to prevent follow-up roller compaction construction, structural member carries separately, pitch rolls unreal situation and occur, and then paves, rolls cutting optimal;
S4, paves, rolls upper layer.
In aforesaid asphalt pavement construction technique, in traditional overhaul situation, 4m is wide for the milling of bicycle road, and 8m is wide in two-way traffic milling, or only milling rut width range road surface, and milling width is 1m.
In aforesaid asphalt pavement construction technique, for the flexible pavement of surface thickness 70mm≤H≤90mm, the milling degree of depth is 90mm, and milling is to basic unit; For the slight rutting asphalt road surface of surface thickness H > 90mm, the milling degree of depth is 90mm, and milling is to cutting optimal; Then the road surface after milling is coated with and spreads tack coat, assembling one deck strengthening structure part constituent element, and on tack coat, lay one deck strengthening structure part constituent element; Again by bituminous mixture laying in one deck strengthening structure part constituent element, pave, roll cutting optimal; Finally pave, roll upper layer.
In aforesaid asphalt pavement construction technique, for surface thickness H=120mm and the flexible pavement of rut disease more than medium time, the milling degree of depth is 120mm, and milling is to basic unit; During for surface thickness H > 120mm, the milling degree of depth is 120mm, and milling is to cutting optimal; Then the road surface after milling is coated with and spreads tack coat, assemble two-layer strengthening structure part constituent element, and on tack coat, lay two-layer strengthening structure part constituent element; Again by bituminous mixture laying in two-layer strengthening structure part constituent element, pave, roll cutting optimal; Finally pave, roll upper layer.
In aforesaid asphalt pavement construction technique, for the severe rutting asphalt road surface of surface thickness H > 120mm, the milling degree of depth is greater than 120mm, and milling is to basic unit; Then the road surface after milling is coated with and spreads tack coat A, and the certain thickness bituminous mixture that paves on tack coat A, roll to after pavement-height 120mm, the bituminous mixture paved is coated with and spreads tack coat B; Assemble two-layer strengthening structure part constituent element again, and on tack coat B, lay two-layer strengthening structure part constituent element, by bituminous mixture laying in two-layer strengthening structure part constituent element, pave, roll cutting optimal; Finally pave, roll upper layer.
In aforesaid asphalt pavement construction technique, pave 40mm upper layer, is produce so-called rubbing leather phenomenon to prevent upper layer from crossing thin, and meets the skill requirement of high-grade highway upper layer thickness.
Compared with prior art, based on the essence that supporting capacity and the rut on dispersed bitumens road surface produce, the invention provides a kind of strengthening structure part of asphalt pavement rut disease management, the size of its each several part is become by constraint pitch stream and flexible pavement thickness, rut width determine jointly, use flexibly, widely applicable, can according to category of roads, thickness of bituminous surface and rut degree of disease carry out the multiple assembling of structural member, adapter is superposed with auxiliary cap of transferring and assembles, and assemble individual layer or two-layer strengthening plate, the two ends of strengthening plate again with assembling after adapter to fold with auxiliary cap of transfer and carry out grafting, and form the strengthening structure part of differing heights and corresponding road surface strengthening structure, different brackets can be widely applicable for, different surface thickness, the improvement of different structure layer asphalt pavement rut disease, also same thickness can be met but the improvement requirement of the different asphalt pavement rut disease of rut degree of disease, can dispersed bitumens bear load, strengthening flexible pavement, constraint surface layer pitch stream become, owing to manufacturing the intensity of the fibre strengthening nylon material of adapter, stiffener and auxiliary switching cap lower than gather materials (i.e. stone), Materials Fracture can be made during maintenance milling, and strengthening structure part adopts grafting combination, its monolateral stressed time be easy to disintegrate, thus the milling of flexible pavement is not affected, the broken bituminous mixture that milling goes out just is used by regeneration, solves resource regeneration and environmental issue.
Of the present invention practicing makes asphalt roads rut degree of disease alleviate more than 60%, and after administering, disease recurrence rate reduces about 50%, and road life extends nearly one times, saves the cost of maintenance about 50% because rut causes, creates good economic results in society.
Accompanying drawing explanation
Fig. 1, Fig. 2 are front view and the lateral view of adapter respectively;
Fig. 3, Fig. 4 are front view and the lateral view of one deck stiffener respectively;
Fig. 5, Fig. 6 are front view and the lateral view of two-layer stiffener respectively;
Fig. 7, Fig. 8 are front view and the lateral view of auxiliary switching cap;
Fig. 9, Figure 10 are front view and the lateral view of adapter, auxiliary switching cap and one deck stiffener respectively;
Figure 11, Figure 12 are front view and the lateral view of adapter, auxiliary switching cap and two-layer stiffener respectively;
Figure 13 is the assembling schematic diagram of strengthening structure part unit;
Figure 14 is the assembling schematic diagram of strengthening structure part constituent element;
Figure 15 is the road surface strengthening structure schematic diagram of embodiment 3;
Figure 16 is the road surface strengthening structure schematic diagram of embodiment 4;
Figure 17 is the road surface strengthening structure schematic diagram of embodiment 5;
Figure 18 is the road surface strengthening structure schematic diagram of embodiment 6;
Figure 19 is the road surface strengthening structure schematic diagram of embodiment 7;
Figure 20 is asphalt roads structural representation.
Reference numeral is: 1-adapter, 2-stiffener, 3-auxiliary switching cap, 4-edge groove A, 5-central recess A, 6-projection A, 7-edge groove B, 8-central recess B, 9-projection B, 10-through hole, 11-cutting optimal, 12-upper layer, 13-tack coat, 131-tack coat A, 132-tack coat B.
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Detailed description of the invention
Embodiments of the invention 1: a kind of strengthening structure part unit administering asphalt pavement rut disease, are made up of adapter 1, stiffener 2 and auxiliary switching cap 3 three part.
As shown in Figure 1 and Figure 2, adapter 1, in hexagon, comprises three long limits and three minor faces, bond length l
8be 20mm; Each minor face is equipped with an edge groove A4, angle α=120 ° between neighboring edge groove A4, the cross section of edge groove A4 is trapezoidal, trapezoidal upper base length l
1, go to the bottom length l
2with high l
3be followed successively by 12mm, 16mm, 14mm, the centre distance l of adapter 1 of going to the bottom
7=15mm; The center of adapter 1 is provided with a central recess A5, and the cross section of central recess A5 is the length of side l of equilateral triangle, described equilateral triangle
4=12.12mm; Be provided with a projection A6 in the one side relative with central recess A5, projection A6 and central recess A5 cooperatively interacts, its height l
16=8mm; The height l of adapter 1
5=30mm, total length l
6=52.16mm.
As shown in Figure 7, Figure 8, auxiliary switching cap 3, in hexagon, comprises three long limits and three minor faces, bond length l
9be 20mm, each minor face be equipped with an edge groove B7, angle β=120 ° between neighboring edge groove B7, the cross section of edge groove B7 is trapezoidal, trapezoidal upper base length l
10, go to the bottom length l
11with high l
12be followed successively by 12mm, 16mm, 14mm, the centre distance l of adapter 1 of going to the bottom
13=15mm; The center of auxiliary switching cap 3 is provided with a central recess B8, and the cross section of central recess B8 is the length of side l of equilateral triangle, described equilateral triangle
14=12.12mm, central recess B8 and projection A6 cooperatively interact, the degree of depth l of central recess B8
15=l
16=8mm; The overall height l of auxiliary switching cap 3
17=20mm, total length l
18=52.16mm.
As shown in Figure 3, Figure 4, the opposite end of stiffener 2 is respectively provided with the projection B9 matched with edge groove A4, i.e. l
22=l
1=12mm, l
23=l
2=16mm, l
24=l
3=14mm; It is semicircular through hole 10 that stiffener 2 is also provided with a cross section, and described through hole 10 is tangent with the center line of stiffener 2, diameter d=40mm; The overall height l of stiffener 2
19=40mm, total length l
20=80mm, overall width l
21=20mm.
Shown in Fig. 9, Figure 10, six adapters, 1, six stiffeners 2 and six auxiliary switching caps 3 are assembled into regular hexagon one deck strengthening structure part unit by inserting mode, one deck strengthening structure part unit after assembling as shown in figure 13, again 23 strengthening structure part unit are formed cellular one deck strengthening structure part constituent element (as shown in figure 14, length l
25=1012.86mm, width l
26=938mm).
Embodiments of the invention 2: a kind of strengthening structure part administering asphalt pavement rut disease, are made up of adapter 1, stiffener 2 and auxiliary switching cap 3 three part.
As shown in Figure 1 and Figure 2, adapter 1, in hexagon, comprises three long limits and three minor faces, bond length l
8be 20mm; Each minor face is equipped with an edge groove A4, angle α=120 ° between neighboring edge groove A4, the cross section of edge groove A4 is trapezoidal, trapezoidal upper base length l
1, go to the bottom length l
2with high l
3be followed successively by 12mm, 16mm, 14mm, the centre distance l of adapter 1 of going to the bottom
7=15mm; The center of adapter 1 is provided with a central recess A5, and the cross section of central recess A5 is the length of side l of equilateral triangle, described equilateral triangle
4=12.12mm; Be provided with a projection A6 in the one side relative with central recess A5, projection A6 and central recess A5 cooperatively interacts, its height l
16=8mm; The height l of adapter 1
5=30mm, total length l
6=52.16mm.
As shown in Figure 7, Figure 8, auxiliary switching cap 3, in hexagon, comprises three long limits and three minor faces, bond length l
9be 20mm, each minor face be equipped with an edge groove B7, angle β=120 ° between neighboring edge groove B7, the cross section of edge groove B7 is trapezoidal, trapezoidal upper base length l
10, go to the bottom length l
11with high l
12be followed successively by 12mm, 16mm, 14mm, the centre distance l of adapter 1 of going to the bottom
13=15mm; The center of auxiliary switching cap 2 is provided with a central recess B8, and the cross section of central recess B8 is the length of side l of equilateral triangle, described equilateral triangle
14=l
4=12.12mm, central recess B8 and projection A6 cooperatively interact, the degree of depth l of central recess B8
15=l
16=8mm; The overall height l of auxiliary switching cap 3
17=20mm, total length l
18=52.16mm.
As shown in Figure 3, Figure 4, the opposite end of stiffener 2 is respectively provided with the projection B9 matched with edge groove A4, i.e. l
22=l
1=12mm, l
23=l
2=16mm, l
24=l
3=14mm; It is semicircular through hole 10 that stiffener 2 is also provided with a cross section, and described through hole 10 is tangent with the center line of stiffener 2, diameter d=40mm; The overall height l of stiffener 2
19=40mm, total length l
20=80mm, overall width l
21=20mm.
Shown in Fig. 5, Fig. 6, two stiffeners 2 are carried out splicing and obtain two-layer stiffener.Press again shown in Figure 11, Figure 12, six adapters, 1, six two-layer stiffeners and six auxiliary switching caps 3 are assembled into regular hexagon two-layer strengthening structure part unit by inserting mode, multiple strengthening structure part unit as shown in figure 13, then is formed a cellular two-layer strengthening structure part constituent element (as shown in figure 14) by the two-layer strengthening structure part unit after assembling.
In embodiment 1-2, adapter 1, stiffener 2 and auxiliary switching cap 3 all adopt the strengthening nylon composite materials containing 25% glass fiber, are made by injection molding technology.
Embodiments of the invention 3: a kind of flexible pavement (surface thickness 70mm≤H≤90mm) construction technology adopting strengthening structure part described in embodiment 1, comprises the following steps:
S1, carries out milling to treadway payment, milling degree of depth h=upper layer thickness h
1(40mm)+strengthening structure part height h
2(h
2=l
5+ l
17=50mm)=90mm, milling is to basic unit;
S2, the road surface after milling is coated with and spreads tack coat 13, according to assembling one deck strengthening structure part unit shown in Fig. 9, Figure 10, and assembling one deck strengthening structure part constituent element according to milling area, being laid on tack coat 13 by one deck strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, determines asphalt paving thickness according to pitch particle diameter, compacting ratio, paving thickness and roll rear height and slightly larger than the height of strengthening structure part, then should pave, roll cutting optimal 11;
S4, paves, rolls 40mm upper layer 12; After having constructed, road surface strengthening structure schematic diagram as shown in figure 15.
Embodiments of the invention 4: a kind of flexible pavement (surface thickness H > 90mm, slightly rut disease) construction technology adopting strengthening structure part described in embodiment 1, comprises the following steps:
S1, carries out milling to treadway payment, milling degree of depth h=upper layer thickness h
1(40mm)+strengthening structure part height h
2(h
2=l
5+ l
17=50mm)=90mm, milling is to cutting optimal 11;
S2, the road surface after milling is coated with and spreads tack coat 13, according to assembling one deck strengthening structure part unit shown in Fig. 9, Figure 10, and assembling one deck strengthening structure part constituent element according to milling area, being laid on tack coat 13 by one deck strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, determines asphalt paving thickness according to pitch particle diameter, compacting ratio, paving thickness and roll rear height and slightly larger than the height of strengthening structure part, then should pave, roll cutting optimal 11;
S4, paves, rolls 40mm upper layer 12; After having constructed, road surface strengthening structure schematic diagram as shown in figure 16.
Embodiments of the invention 5: a kind ofly adopt the flexible pavement of strengthening structure part described in embodiment 2 (surface thickness H=120mm, rut disease medium more than) construction technology, comprise the following steps:
S1, carries out milling to treadway payment, milling degree of depth h=upper layer thickness h
1(40mm)+strengthening structure part height h
2(h
2=l
5+ l
5+ l
17=80mm)=120mm, milling is to basic unit;
S2, the road surface after milling is coated with and spreads tack coat 13, according to assembling two-layer strengthening structure part unit shown in Figure 11, Figure 12, and form two-layer strengthening structure part constituent element, and be placed on above tack coat 13 by two-layer strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, determines asphalt paving thickness according to pitch particle diameter, compacting ratio, paving thickness and roll rear height and slightly larger than the height of strengthening structure part, then should pave, roll cutting optimal 11;
S4, paves, rolls 40mm upper layer 12; After having constructed, road surface strengthening structure schematic diagram as shown in figure 17.
Embodiments of the invention 6: a kind ofly adopt the flexible pavement of strengthening structure part described in embodiment 2 (surface thickness H > 120mm, rut disease are medium) construction technology, comprise the following steps:
S1, carries out milling to treadway payment, milling degree of depth h=upper layer thickness h
1(40mm)+strengthening structure part height h
2(h
2=l
5+ l
5+ l
17=80mm)=120mm, milling is to cutting optimal 11;
S2, the road surface after milling is coated with and spreads tack coat 13, according to assembling two-layer strengthening structure part unit shown in Figure 11, Figure 12, and form two-layer strengthening structure part constituent element, and be placed on above tack coat 13 by two-layer strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, determines asphalt paving thickness according to pitch particle diameter, compacting ratio, paving thickness and roll rear height and slightly larger than the height of strengthening structure part, then should pave, roll cutting optimal 11;
S4, paves, rolls 40mm upper layer 12; After having constructed, road surface strengthening structure schematic diagram as shown in figure 18.
Embodiments of the invention 7: a kind of flexible pavement (surface thickness H > 120mm, severe rut disease) construction technology adopting strengthening structure part described in embodiment 2, comprises the following steps:
S1, carries out milling to treadway payment, and the milling degree of depth is greater than 120mm, and milling is to basic unit;
S2, the road surface after milling is coated with and spreads tack coat A131, due to milling degree of depth h (> 120mm)-upper layer thickness h
1(40mm)-strengthening structure part height h
2(h
2=l
5+ l
5+ l
17=80mm) > 0=h
3, therefore pave certain thickness h on tack coat A131
3bituminous mixture, roll to after pavement-height 120mm, the bituminous mixture paved be coated with and spread tack coat B132;
S3, according to assembling two-layer strengthening structure part unit shown in Figure 11, Figure 12, and on tack coat B132, lay two-layer strengthening structure part constituent element, by bituminous mixture laying in two-layer strengthening structure part constituent element, asphalt paving thickness is determined according to pitch particle diameter, compacting ratio, paving thickness and roll rear height and slightly larger than the height of strengthening structure part, then should pave, roll cutting optimal 11;
S4, paves, rolls upper layer 12; After having constructed, road surface strengthening structure schematic diagram as shown in figure 19.
For embodiment 3-7, in traditional overhaul situation, 4m is wide for the milling of bicycle road, and 8m is wide in two-way traffic milling, or only milling rut width range road surface, and milling width is 1m.
In addition, applicant has also carried out contrast test to rut disease management technology of the present invention and traditional Lesion technology (milling overlay technique).First to occurring that the bicycle road surface milling 4m of serious rut is wide, 120mm is dark; Then, along a rut track laying strengthening structure part of the present invention, and along another rut circuit by traditional handicraft asphalt road surface.Experience driving observation is more than a year measured, and in test section, traditional handicraft asphalt pavement track disease recurrence rate reaches about 40%, and some rutting depth even reaches more than 40mm; And the asphalt pavement rut disease recurrence rate of laying strengthening structure part of the present invention is less than 20%, and rut bosom is only 15mm.
Claims (10)
1. administer the strengthening structure part of asphalt pavement rut disease for one kind, it is characterized in that: be made up of adapter (1), stiffener (2) and auxiliary switching cap (3) three part, be assembled into regular hexagon strengthening structure part unit by inserting mode, multiple strengthening structure part unit forms a cellular strengthening structure part constituent element.
2. the strengthening structure part of improvement asphalt pavement rut disease according to claim 1, it is characterized in that: adapter (1) is provided with three edge groove A (4) and a central recess A (5), angle between neighboring edge groove A (4) is 120 °, the cross section of edge groove A (4) is trapezoidal, the cross section of central recess A (5) is equilateral triangle, be provided with a projection A (6) in the one side relative with central recess A (5), projection A (6) and central recess A (5) cooperatively interact.
3. the strengthening structure part of improvement asphalt pavement rut disease according to claim 2, it is characterized in that: auxiliary switching cap (3) is provided with three edge groove B (7) and a central recess B (8), angle between neighboring edge groove B (7) is 120 °, the cross section of edge groove B (7) is trapezoidal, the cross section of central recess B (8) is equilateral triangle, edge groove B (7) is identical with edge groove A (4) size, central recess B (8) is identical with the size of central recess A (5), central recess B (8) and projection A (6) cooperatively interact.
4. the strengthening structure part of the improvement asphalt pavement rut disease according to Claims 2 or 3, it is characterized in that: the opposite end of stiffener (2) is respectively provided with the projection B (9) matched with edge groove A (4), it is semicircular through hole (10) that stiffener (2) is also provided with a cross section, and described through hole (10) is tangent with the center line of stiffener (2).
5. the strengthening structure part of improvement asphalt pavement rut disease according to claim 4, it is characterized in that: described regular hexagon strengthening structure part unit is assembled by inserting mode by six adapters (1), six stiffeners (2) and six auxiliary switchings cap (3), and multiple strengthening structure part unit forms cellular one deck strengthening structure part constituent element.
6. the strengthening structure part of improvement asphalt pavement rut disease according to claim 4, it is characterized in that: described regular hexagon strengthening structure part unit is assembled by inserting mode by six adapters (1), 12 stiffeners (2) and six auxiliary switchings cap (3), and multiple strengthening structure part unit forms a cellular two-layer strengthening structure part constituent element.
7. adopt an asphalt pavement construction technique for the strengthening structure part administering asphalt pavement rut disease described in claim 1 ~ 6 any one, it is characterized in that, comprise the following steps:
S1, according to the surface thickness determination milling degree of depth of flexible pavement, carries out milling to treadway payment;
S2, the road surface after milling is coated with and spreads tack coat (13), according to milling area assembling strengthening structure part constituent element, and at tack coat (13) upper laying strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, then paves, rolls cutting optimal (11);
S4, paves, rolls upper layer (12).
8. asphalt pavement construction technique according to claim 7, it is characterized in that: for the flexible pavement of surface thickness 70mm≤H≤90mm, the milling degree of depth is 90mm, and milling is to basic unit; For the slight rutting asphalt road surface of surface thickness H > 90mm, the milling degree of depth is 90mm, and milling is to cutting optimal (11); Then the road surface after milling is coated with and spreads tack coat (13), assembling one deck strengthening structure part constituent element, and at tack coat (13) upper laying one deck strengthening structure part constituent element; Again by bituminous mixture laying in one deck strengthening structure part constituent element, pave, roll cutting optimal (11); Finally pave, roll upper layer (12).
9. asphalt pavement construction technique according to claim 7, is characterized in that: for surface thickness H=120mm and the flexible pavement of rut disease more than medium time, the milling degree of depth is 120mm, and milling is to basic unit; For surface thickness H > 120mm and rut disease is medium flexible pavement time, the milling degree of depth is 120mm, and milling is to cutting optimal (11); Then the road surface after milling is coated with and spreads tack coat, assemble two-layer strengthening structure part constituent element, and on tack coat, lay two-layer strengthening structure part constituent element; Again by bituminous mixture laying in two-layer strengthening structure part constituent element, pave, roll cutting optimal (11); Finally pave, roll upper layer (12).
10. asphalt pavement construction technique according to claim 7, is characterized in that: for the severe rutting asphalt road surface of surface thickness H > 120mm, the milling degree of depth is greater than 120mm, and milling is to basic unit; Then the road surface after milling is coated with and spreads tack coat A (131), and the certain thickness bituminous mixture that paves on tack coat A (131), roll to after pavement-height 120mm, the bituminous mixture paved is coated with and spreads tack coat B (132); Assemble two-layer strengthening structure part constituent element again, and at the two-layer strengthening structure part constituent element of the upper laying of tack coat B (132), by bituminous mixture laying in two-layer strengthening structure part constituent element, pave, roll cutting optimal (11); Finally pave, roll upper layer (12).
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| CN106442060B (en) * | 2016-10-20 | 2023-04-21 | 长安大学 | Asphalt mixture rut test piece forming test mold |
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| US4797026A (en) * | 1984-05-09 | 1989-01-10 | The United States Of America As Represented By The Secretary Of The Army | Expandable sand-grid for stabilizing an undersurface |
| JP2650773B2 (en) * | 1990-08-03 | 1997-09-03 | ジャパンコンステック株式会社 | Road paving method |
| FR2691726A1 (en) * | 1992-05-29 | 1993-12-03 | Scores | Soft tennis court made of synthetic material - has drainage layer and surface with hexagonal section honeycomb layer between filled with dry or wet compacted pozzolana or zeolite |
| CN2148092Y (en) * | 1992-10-07 | 1993-12-01 | 西安市莲湖区自强塑料制品厂 | Anticrack grid sheet for reinforcement of pavement |
| DE4416943C2 (en) * | 1994-05-13 | 1997-01-23 | Funke Kunststoffe Gmbh | Development of a movement area for horses, especially for a riding arena |
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| CN102505602B (en) * | 2011-10-26 | 2015-03-11 | 华南理工大学 | Structure and construction method for reinforcing asphalt pavement by drive pins wound with glass fiber yarn |
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