CN104141270A - Novel strengthening structural part governing asphalt pavement track disease and pavement construction technology - Google Patents
Novel strengthening structural part governing asphalt pavement track disease and pavement construction technology Download PDFInfo
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- CN104141270A CN104141270A CN201410352947.9A CN201410352947A CN104141270A CN 104141270 A CN104141270 A CN 104141270A CN 201410352947 A CN201410352947 A CN 201410352947A CN 104141270 A CN104141270 A CN 104141270A
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Abstract
The invention discloses a novel structural part governing the asphalt pavement track disease and a pavement construction technology. The novel strengthening structural part is composed of adapters, strengthening plates and auxiliary through connection nuts, regular hexagon strengthening structural part units are assembled in an insertion connecting mode, and multiple strengthening structural part units compose one honeycomb-shaped strengthening structural part component. The pavement construction technology with the strengthening structural part includes the steps that firstly, the milling depth is determined according to the face layer thickness of an asphalt pavement, and the track pavement is milled; secondly, the milled pavement is coated with a bonding layer, the strengthening structural part components are assembled, and the strengthening structural part components are laid on the bonding layer; thirdly, asphalt mixtures are laid in the structural part components, and a lower face layer is laid and rolled; fourthly, an upper face layer is laid and rolled. The structural part is flexible in use and wide in application range, the load borne by asphalt can be dispersed, the asphalt pavement is strengthened, rheology of the asphalt on the face layers is constrained, and regeneration of the asphalt can be ensured.
Description
Technical field
The present invention relates to a kind of novel reinforced structural member and construction Craft of administering asphalt pavement rut disease, belong to urban road and highway engineering technical field.
Background technology
Asphalt roads structure forms (seeing Figure 20) by surface layer, basic unit, subbase and roadbed, is generally 7-18cm according to category of roads surface thickness, and surface layer is the level that bears shear stress and pitch rheology 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, has reduced the application life on road surface, harm traffic safety.The pain of mind that economic loss and social influence that rut disease causes be huge, become highway construction person and maintenance person.
Mainly and inner frictional resistance scheduling theory and practice chain based on embedded squeezing between modified bitumen, the continuous close-graded of surface layer and raising surface layer at present, by adopting: technology is filled up at (1) micro-table place; (2) milling plucking technology; (3) milling overlays technology and administers rut disease.But rut disease effectively do not contained, arduousness of administering that asphalt pavement rut disease and recurrence be still that we face and ubiquitous problem.
Summary of the invention
The object of the invention is to, a kind of novel reinforced structural member and construction Craft of administering asphalt pavement rut disease is provided, this structural member uses flexible, widely applicable, and the rheology of the load of can dispersed bitumens bearing, strengthening flexible pavement, constraint surface layer pitch, can ensure the regeneration of pitch.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of novel reinforced structural member of administering asphalt pavement rut disease, formed by adapter, stiffener and auxiliary switching cap three parts, be assembled into regular hexagon strengthening structure part unit by inserting mode, a cellular strengthening structure part constituent element of multiple strengthening structure parts unit composition.
In the novel reinforced structural member of aforesaid improvement asphalt pavement rut disease, adapter is provided with three edge groove A and a 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 interact.
In the novel reinforced structural member of aforesaid improvement asphalt pavement rut disease, auxiliary switching cap is provided with three edge groove B and a 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 interact.
In the novel reinforced structural member of aforesaid improvement asphalt pavement rut disease, the opposite end of stiffener is respectively provided with the projection B matching 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 novel reinforced structural member of aforesaid improvement asphalt pavement rut disease, the cross section of edge groove A, B is trapezoidal, the one, be conducive to adapter, assist the location of switching cap and stiffener, ensure size and the geometric shape of strengthening structure part unit and constituent element, the 2nd, can make adapter, auxiliary switching cap and stiffener not easily separated in the time of tension stress; The cross section of central recess A, B is equilateral triangle, accurate positioning can make adapter peg graft time, the edge groove B dislocation of the edge groove A of upper and lower adapter or auxiliary switching cap while avoiding adapter to peg graft and the problem that causes stiffener to peg graft.
In the novel reinforced structural member 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, cellular one deck strengthening structure part constituent element of multiple strengthening structure parts unit composition.
In the novel reinforced structural member 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, a cellular two-layer strengthening structure part constituent element of multiple strengthening structure parts unit composition.
In the novel reinforced structural member 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 make by injection molding technology.
Adopt Vicat softening point method of testing to measure the heat resistance of the strengthening nylon composite materials adding after 25% glass fiber, specific as follows:
(1) adopt the RRHDV4 type Vicat softening point instrument that RAY-RAN company of Britain produces to measure, according to GB/T1634-2 standard, test condition is 120 DEG C/h, A, and pure nylon softening point is 73 DEG C, glass fiber-reinforced nylon softening point is 113 DEG C;
(2) heat resistance of the hardness of the strengthening plate that mensuration contains 25% glass fiber-reinforced nylon composite materials manufacture under different temperatures, 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 160 DEG C time and room temperature is basic identical, thereby the temperature tolerance that draws the strengthening nylon composite materials that contains 25% glass fiber is higher than 160 DEG C, and approximately 140 DEG C of bituminous mixture layings, temperature while rolling, therefore, strengthening structure part can meet asphalt pavement construction requirement.
An asphalt pavement construction technique that adopts the novel reinforced structural member of aforementioned improvement asphalt pavement rut disease, comprises the following steps:
S1, determines the milling degree of depth according to the surface thickness of flexible pavement, and treadway payment is carried out to milling;
S2, is coated with and spreads tack coat on the road surface after milling, according to milling area (the milling degree of depth and milling width) assembling strengthening structure part constituent element, and on tack coat, lays strengthening structure part constituent element;
S3, by bituminous mixture laying in strengthening structure part constituent element, according to pitch particle diameter, compacting than definite asphalt paving thickness, when bituminous mixture compacting construction, the compacting ratio of the short transverse of the bituminous mixture of different-grain diameter is 97% left and right, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, structural member carries separately when preventing follow-up roller compaction construction, pitch rolls unreal situation and occur, and then paves, rolls lower surface layer;
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 milling rut width range road surface only, 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 lower surface layer; Then on the road surface after milling, be coated with and spread 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 lower surface layer; Finally pave, roll upper layer.
In aforesaid asphalt pavement construction technique, when flexible pavement for surface thickness H=120mm and rut disease more than medium, 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 lower surface layer; Then on the road surface after milling, be coated with and spread 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 lower surface layer; 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 on the road surface after milling, be coated with and spread tack coat A, and the certain thickness bituminous mixture that paves on tack coat A, roll to after pavement-height 120mm, on the bituminous mixture paving, be coated with and spread tack coat B; Assemble again two-layer strengthening structure part constituent element, and on tack coat B, lay two-layer strengthening structure part constituent element, bituminous mixture laying, in two-layer strengthening structure part constituent element, is paved, rolls lower surface layer; Finally pave, roll upper layer.
In aforesaid asphalt pavement construction technique, the 40mm upper layer that paves, is to produce so-called rubbing leather phenomenon in order to prevent upper layer from crossing thin, and meets the experience requirement of high-grade highway upper layer thickness.
Compared with prior art, the essence that supporting capacity based on dispersed bitumens road surface and rut produce, the invention provides a kind of novel reinforced structural member of asphalt pavement rut disease management, the size of its each several part is by retraining pitch rheology and flexible pavement thickness, the common decision of rut width, use flexibly, widely applicable, can be according to category of roads, thickness of bituminous surface and rut degree of disease are carried out the multiple assembling of structural member, by adapter and auxiliary switching cap stack assembling, and assemble individual layer or two-layer strengthening plate, the two ends of strengthening plate again with assembling after adapter and folded the pegging graft of auxiliary switching cap, and the strengthening structure part of formation differing heights and road surface strengthening structure correspondingly, can be widely applicable for different brackets, different surface thicknesses, the improvement of different structure layer asphalt pavement rut disease, also can meet same thickness but the improvement requirement of the different asphalt pavement rut disease of rut degree of disease, the rheology of the load of can dispersed bitumens bearing, strengthening flexible pavement, constraint surface layer pitch, because the intensity of fibre strengthening nylon material of manufacturing adapter, stiffener and auxiliary switching cap is lower than gather materials (being stone), when maintenance milling, can make Materials Fracture, and strengthening structure part adopts grafting combination, it disintegrates monolateral being easy to when stressed, thereby do not affect the milling of flexible pavement, the broken bituminous mixture that milling goes out just can be used by regeneration, solves resource regeneration and environmental issue.
Of the present invention practicing alleviates more than 60% asphalt roads rut degree of disease, and after administering, disease recurrence rate reduces by 50% left and right, and road life extends nearly one times, saves the cost of maintenance approximately 50% that cause because of rut, has produced good economic results in society.
Brief description of the drawings
Fig. 1, Fig. 2 are respectively front view and the lateral views of adapter;
Fig. 3, Fig. 4 are respectively front view and the lateral views of one deck stiffener;
Fig. 5, Fig. 6 are respectively front view and the lateral views of two-layer stiffener;
Fig. 7, Fig. 8 are front view and the lateral views of auxiliary switching cap;
Fig. 9, Figure 10 are respectively front view and the lateral views of adapter, auxiliary switching cap and one deck stiffener;
Figure 11, Figure 12 are respectively front view and the lateral views of adapter, auxiliary switching cap and two-layer stiffener;
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, the auxiliary switching of 3-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, surface layer under 11-, 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 novel reinforced structural member unit of administering asphalt pavement rut disease, is made up of adapter 1, stiffener 2 and auxiliary switching cap 3 three parts.
As shown in Figure 1 and Figure 2, adapter 1 is hexagon, comprises three long limits and three minor faces, bond length l
8be 20mm; On each minor face, be 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, the length l of going to the bottom
2with high l
3be followed successively by 12mm, 16mm, 14mm, the centre distance l of the 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 equilateral triangle, the length of side l of 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 interact, 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 is hexagon, comprises three long limits and three minor faces, bond length l
9be 20mm, on 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, the length l of going to the bottom
11with high l
12be followed successively by 12mm, 16mm, 14mm, the centre distance l of the 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 equilateral triangle, the length of side l of 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 matching 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.
Press 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 by cellular one deck strengthening structure part constituent element (length l as shown in figure 14, of 23 strengthening structure part unit compositions
25=1012.86mm, width l
26=938mm).
Embodiments of the invention 2: a kind of novel reinforced structural member of administering asphalt pavement rut disease, is made up of adapter 1, stiffener 2 and auxiliary switching cap 3 three parts.
As shown in Figure 1 and Figure 2, adapter 1 is hexagon, comprises three long limits and three minor faces, bond length l
8be 20mm; On each minor face, be 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, the length l of going to the bottom
2with high l
3be followed successively by 12mm, 16mm, 14mm, the centre distance l of the 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 equilateral triangle, the length of side l of 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 interact, 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 is hexagon, comprises three long limits and three minor faces, bond length l
9be 20mm, on 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, the length l of going to the bottom
11with high l
12be followed successively by 12mm, 16mm, 14mm, the centre distance l of the 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 equilateral triangle, the length of side l of 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 matching 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.
Press shown in Fig. 5, Fig. 6, two stiffeners 2 are spliced 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 the two-layer strengthening structure part of regular hexagon unit by inserting mode, two-layer strengthening structure part unit after assembling as shown in figure 13, then by a cellular two-layer strengthening structure part constituent element of multiple strengthening structure parts unit composition (as shown in figure 14).
In embodiment 1-2, adapter 1, stiffener 2 and auxiliary switching cap 3 all adopt the strengthening nylon composite materials containing 25% glass fiber, make by injection molding technology.
Embodiments of the invention 3: a kind of flexible pavement (surface thickness 70mm≤H≤90mm) construction technology that adopts 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, is coated with and spreads tack coat 13 on the road surface after milling, according to assembling one deck strengthening structure part unit shown in Fig. 9, Figure 10, and according to milling area assembling one deck strengthening structure part constituent element, one deck strengthening structure part constituent element is laid on tack coat 13;
S3, by bituminous mixture laying, in strengthening structure part constituent element, according to pitch particle diameter, compacting, than definite asphalt paving thickness, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, then paves, rolls lower surface layer 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, slight rut disease) construction technology that adopts 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 lower surface layer 11;
S2, is coated with and spreads tack coat 13 on the road surface after milling, according to assembling one deck strengthening structure part unit shown in Fig. 9, Figure 10, and according to milling area assembling one deck strengthening structure part constituent element, one deck strengthening structure part constituent element is laid on tack coat 13;
S3, by bituminous mixture laying, in strengthening structure part constituent element, according to pitch particle diameter, compacting, than definite asphalt paving thickness, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, then paves, rolls lower surface layer 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 of flexible pavement that adopts strengthening structure part described in embodiment 2 (surface thickness H=120mm, rut disease medium more than) construction technology, 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
5+ l
17=80mm)=120mm, milling is to basic unit;
S2, is coated with and spreads tack coat 13 on the road surface after milling, according to assembling two-layer strengthening structure part unit shown in Figure 11, Figure 12, and forms two-layer strengthening structure part constituent element, and two-layer strengthening structure part constituent element is placed on above tack coat 13;
S3, by bituminous mixture laying, in strengthening structure part constituent element, according to pitch particle diameter, compacting, than definite asphalt paving thickness, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, then paves, rolls lower surface layer 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: the flexible pavement of strengthening structure part described in a kind of embodiment of employing 2 (surface thickness H > 120mm, rut disease are medium) construction technology, 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
5+ l
17=80mm)=120mm, milling is to lower surface layer 11;
S2, is coated with and spreads tack coat 13 on the road surface after milling, according to assembling two-layer strengthening structure part unit shown in Figure 11, Figure 12, and forms two-layer strengthening structure part constituent element, and two-layer strengthening structure part constituent element is placed on above tack coat 13;
S3, by bituminous mixture laying, in strengthening structure part constituent element, according to pitch particle diameter, compacting, than definite asphalt paving thickness, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, then paves, rolls lower surface layer 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 that adopts 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, is coated with and spreads tack coat A131 on the road surface after milling, 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, certain thickness h therefore paves on tack coat A131
3bituminous mixture, roll to after pavement-height 120mm, on the bituminous mixture paving, 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, according to pitch particle diameter, compacting than definite asphalt paving thickness, paving thickness and roll rear height and should be slightly larger than the height of strengthening structure part, then paves, rolls lower surface layer 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 milling rut width range road surface only, 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 press traditional handicraft asphalt road surface along another rut circuit.Driving observation more than a year of experience is measured, and in test section, traditional handicraft asphalt pavement track disease recurrence rate reaches 40% left and right, and more than some rut degree of depth even reaches 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 novel reinforced structural member of asphalt pavement rut disease for one kind, it is characterized in that: formed by adapter (1), stiffener (2) and auxiliary switching cap (3) three parts, be assembled into regular hexagon strengthening structure part unit by inserting mode, a cellular strengthening structure part constituent element of multiple strengthening structure parts unit composition.
2. the novel reinforced structural member 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 novel reinforced structural member 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. according to the novel reinforced structural member of the improvement asphalt pavement rut disease described in claim 2 or 3, it is characterized in that: the opposite end of stiffener (2) is respectively provided with the projection B (9) matching 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 novel reinforced structural member 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 switching caps (3) cellular one deck strengthening structure part constituent element of multiple strengthening structure parts unit composition.
6. the novel reinforced structural member 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 switching caps (3) a cellular two-layer strengthening structure part constituent element of multiple strengthening structure parts unit composition.
7. adopt an asphalt pavement construction technique of administering the novel reinforced structural member of asphalt pavement rut disease described in claim 1～6 any one, it is characterized in that, comprise the following steps:
S1, determines the milling degree of depth according to the surface thickness of flexible pavement, and treadway payment is carried out to milling;
S2, is coated with and spreads tack coat (13) on the road surface after milling, according to milling area assembling strengthening structure part constituent element, and at the upper strengthening structure part constituent element of laying of tack coat (13);
S3, in strengthening structure part constituent element, then paves, rolls lower surface layer (11) by bituminous mixture laying;
S4, paves, rolls upper layer (12).
8. asphalt pavement construction technique according to claim 7, 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 lower surface layer (11); Then on the road surface after milling, be coated with and spread tack coat (13), assembling one deck strengthening structure part constituent element, and at the upper one deck strengthening structure part constituent element of laying of tack coat (13); Again by bituminous mixture laying in one deck strengthening structure part constituent element, pave, roll lower surface layer (11); Finally pave, roll upper layer (12).
9. asphalt pavement construction technique according to claim 7, is characterized in that: when flexible pavement for surface thickness H=120mm and rut disease more than medium, the milling degree of depth is 120mm, and milling is to basic unit; While being medium flexible pavement for surface thickness H > 120mm and rut disease, the milling degree of depth is 120mm, and milling is to lower surface layer (11); Then on the road surface after milling, be coated with and spread 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 lower surface layer (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 on the road surface after milling, be coated with and spread tack coat A (131), and the certain thickness bituminous mixture that paves on tack coat A (131), roll to after pavement-height 120mm, on the bituminous mixture paving, be coated with and spread tack coat B (132); Assemble again two-layer strengthening structure part constituent element, and at the two-layer strengthening structure part constituent element of the upper laying of tack coat B (132), bituminous mixture laying, in two-layer strengthening structure part constituent element, is paved, rolls lower surface layer (11); Finally pave, roll upper layer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410352947.9A CN104141270B (en) | 2014-07-22 | 2014-07-22 | Administer strengthening structure part and the construction Craft of asphalt pavement rut disease |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410352947.9A CN104141270B (en) | 2014-07-22 | 2014-07-22 | Administer strengthening structure part and the construction Craft of asphalt pavement rut disease |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106087676A (en) * | 2016-08-08 | 2016-11-09 | 东北大学秦皇岛分校 | Administer bituminous paving and gather around reinforced structure part and the construction Craft of bag disease |
| CN106442060A (en) * | 2016-10-20 | 2017-02-22 | 长安大学 | Forming test mold for asphalt mixture rutting test piece |
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| CN106087676A (en) * | 2016-08-08 | 2016-11-09 | 东北大学秦皇岛分校 | Administer bituminous paving and gather around reinforced structure part and the construction Craft of bag disease |
| CN106442060A (en) * | 2016-10-20 | 2017-02-22 | 长安大学 | Forming test mold for asphalt mixture rutting test piece |
| CN106442060B (en) * | 2016-10-20 | 2023-04-21 | 长安大学 | Asphalt mixture rut test piece forming test mold |
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| CN104141270B (en) | 2016-04-13 |
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