CN105002800A - Pavement overhaul method and structure for treating different lane road surfaces with large road condition differences - Google Patents
Pavement overhaul method and structure for treating different lane road surfaces with large road condition differences Download PDFInfo
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- CN105002800A CN105002800A CN201510445103.3A CN201510445103A CN105002800A CN 105002800 A CN105002800 A CN 105002800A CN 201510445103 A CN201510445103 A CN 201510445103A CN 105002800 A CN105002800 A CN 105002800A
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Abstract
The invention provides a pavement overhaul method and structure for treating different lane road surfaces with large road condition differences. The method comprises the steps that a cold in-place recycling technology is adopted in a seriously-damaged middle lane in an old road surface structure to carry out foundation layer deep treatment, and direct paving is carried out on slightly-damaged side lanes; before foundation layer deep treatment with the cold in-place recycling technology is carried out, an old asphalt surface layer within the range of the middle lane is milled firstly, and then, cold in-place recycling is carried out on an old foundation; and a cold in-place recycling mixture layer is paved with a dense bitumen bituminous stabilized macadam layer until the height is coincident with the height obtained before the side lanes are paved with surfaces, and finally, the whole section is paved with two bituminous concrete layers in a unified manner. By means of the structure, before the whole section of an old road is paved with the bituminous concrete layer, according to the condition of the old road, treatment of different degrees is carried out, and the composite resilient modulus of the top faces of the different lanes in the same section is close, so that the influence of the large road condition differences of the different lane road surfaces on the newly-paved asphalt surface layer is reduced; and the longitudinal reflection cracks of the road surface are delayed, and the service life of the road surface is prolonged.
Description
Technical field
The present invention relates to and a kind ofly process the heavy resurfacing method and structure that different carriageway surfacing road conditions differ greatly.
Background technology
Flexible pavement is the primary structure pattern of China's urban road surfaces, and the flexible pavement built in early days arrives service life, in succession enter maintenance and change, extension stage.Found by investigation, for the cross section pattern of multilane, the pavement disease order of severity in different track often differs larger, and it is the most serious with the track disease that load-bearing is larger, flexure is also maximum, and the track that general load-bearing is larger is positioned at centre, and main cause is that middle lane heavy-duty vehicle frequency of utilization is higher, and the speed of a motor vehicle is comparatively slow, accelerates the damage on road surface.Therefore, for the situation that the different tracks disease order of severity in same section differs, need to there are different old road punishment means.
Summary of the invention
The present invention improves the problems referred to above, and namely the technical problem to be solved in the present invention is a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly of design.
First specific embodiments of the present invention is: a kind of heavy resurfacing method processing different carriageway surfacing road conditions and differ greatly, comprise and there is multiple carriageway surfacings, the old pavement structure of described non-overhaul is provided with asphalt surface course, Cement Stabilized Sand Gravel and soil&stone cushion from top to bottom, it is characterized in that, comprise the following steps:
(1) heavier to disease in old pavement structure middle lane adopts Local Cold Regenerating Technology to carry out basic unit's deep level of processing, and the side track lighter to disease adopts and directly overlay;
(2) before described Local Cold Regenerating Technology carries out basic unit's deep level of processing, Bituminous concrete surface surface layer within the scope of first milling middle lane, then cold in place recycling is carried out to old basic unit and form the cold in place recycling mixing bed of material, then on the cold in place recycling mixing bed of material, overlay dense bitumen stabilization gravel layer consistent with absolute altitude before the outrigger location of track, side to absolute altitude, last whole section is unified overlays layers of asphalt layer of concrete;
Further, it is 4.55m that described middle lane Local Cold Regenerating Technology carries out basic unit's deep level of processing width, and the lap length described cold in place recycling mixing bed of material overlaying dense bitumen stabilization gravel layer is 1m.
Further, between the described cold in place recycling mixing bed of material and dense bitumen stabilization gravel layer, slurry seal is set.
Further, described overlay dense bitumen stabilization gravel layer and adjacent lane seam crossing are equipped with the wide glass fiber grid of 2m, and both sides are respectively across seam 1m.
Further, it is SMA-13 modified asphalt concrete layer that described overlay layers of asphalt layer of concrete comprises overlay upper layer, and overlaying cutting optimal is grain formula modified asphalt concrete layer in AC-20C.
Second specific embodiments of the present invention is: a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly, comprise and there is multiple carriageway surfacings, described road structure is provided with upper layer from top to bottom, middle surface layer, cutting optimal, Cement Stabilized Sand Gravel and soil&stone cushion, the cold in place recycling mixing bed of material is provided with in the middle part of described road structure, described cold in place recycling mixing bed of material upper surface is provided with the dense bitumen stabilization gravel mixing bed of material, described dense bitumen stabilization gravel mixing bed of material both sides and road surface overlap with stepped form, described dense bitumen stabilization gravel mixing bed of material upper level is mutually concordant with upper layer, described upper layer upper surface is provided with at least one deck Paving Bituminous Concrete layer.
Further, described cold in place recycling mixing bed of material top is embedded in the dense bitumen stabilization gravel mixing bed of material.
Further, be provided with between described ground cold regeneration mix layer with the dense bitumen stabilization gravel mixing bed of material there is slurry seal.
Further, described cold in place recycling mixing material layer lower part is embedded in Cement Stabilized Sand Gravel.
Further, the described dense bitumen stabilization gravel mixing bed of material and adjacent upper layer seam crossing upper surface are provided with glass fiber grid.
Compared with prior art, the present invention has following beneficial effect:
(1) otherness that the present invention is directed to different track, road surface damages the otherness overhaul structure making corresponding design, the both sides carriageway surfacing that, flexure less for disease is less, just can consider directly to arrange asphalt concrete layer after only need doing simple process to disease; But, the middle lane road surface that, flexure more for disease is larger then needs to carry out reinforced structure design to old base course, bituminous concrete Rotating fields is added again on its surface, the present invention differs greatly on the impact of new Laying Asphalt Surface Course to reduce different carriageway surfacing situation, delay the longitudinal reflection crack in road surface, improve service life of road surface.
(2) in the present invention, Local Cold Regenerating Technology carries out basic unit's deep level of processing to middle lane, can reduce the interference to Liang Ge track, side, ensure that the resistance to overturning of structure;
(3) in the present invention, the lap length of dense bitumen stabilization gravel layer is set to 1m, and dense bitumen stabilization gravel layer and adjacent lane seam crossing are equipped with the wide glass fiber grid of 2m, ensure that the resistance to overturning of structure.
Accompanying drawing explanation
Fig. 1 is road surface structural layout plan before transformation.
Fig. 2 is road surface structural layout plan after transformation.
In figure: 1-upper layer, surface layer in 2-, 3-cutting optimal, 4-Cement Stabilized Sand Gravel, 5-soil&stone cushion, 6,7-Paving Bituminous Concrete layer, the 8-dense bitumen stabilization gravel mixing bed of material, 9-slurry seal, the 10-cold in place recycling mixing bed of material, 11-glass fiber grid.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Illustrate that concrete Pavement Improvement structure illustrates with example below:
Be illustrated in figure 1 the road structure before overhaul, comprise upper layer 1, middle surface layer 2, cutting optimal 3, Cement Stabilized Sand Gravel 4, soil&stone cushion 5, one deck modified emulsifying asphalt adhesion coating can be provided with between each surface layer, between basic unit and surface layer, be provided with one deck slurry seal, described upper layer is particulate formula modified asphalt concrete layer, described middle surface layer is middle grain formula asphalt concrete layer, and described cutting optimal is Coarse Graded Bituminous Concrete layer.
Fig. 2 is the road structure after overhaul, the cold in place recycling mixing bed of material 10 is provided with in the middle part of described road structure, the described cold in place recycling mixing bed of material 10 upper surface is provided with the dense bitumen stabilization gravel mixing bed of material 8, the described dense bitumen stabilization gravel mixing bed of material 8 both sides and road surface overlap with stepped form, the described dense bitumen stabilization gravel mixing bed of material 8 upper level is mutually concordant with upper layer 1, and described upper layer upper surface is provided with at least one deck Paving Bituminous Concrete layer (6,7).
The described cold in place recycling mixing bed of material 10 top is embedded in the dense bitumen stabilization gravel mixing bed of material 8, and the described cold in place recycling mixing bed of material 10 bottom is embedded in Cement Stabilized Sand Gravel 4.Be provided with between described ground cold regeneration mix layer 10 with the dense bitumen stabilization gravel mixing bed of material 8 and there is slurry seal 9.
The dense bitumen stabilization gravel mixing bed of material 8 and upper layer 1 seam crossing upper surface are provided with glass fiber grid 11.
The described dense bitumen stabilization gravel mixing bed of material 8 upper surface absolute altitude is mutually concordant with track, side upper layer 1, and described upper layer 1 upper surface is provided with at least one deck asphalt concrete layer.In the present embodiment, add and be covered with layers of asphalt layer of concrete, be specially the AC-20C modification Paving Bituminous Concrete layer 7 of SMA-13 Paving Bituminous Concrete layer 6, the 8cm thickness of 4cm thickness.
The heavy resurfacing structure technology scheme that the different carriageway surfacing situation of concrete process differs greatly is: be first 4.55m in conjunction with on-the-spot cold regeneration construction width determination on-the-spot cold regeneration Road width, the old 16cm asphalt surface course of milling within the scope of on-the-spot cold regeneration Road width, comprise upper layer 1, middle surface layer 2, cutting optimal 3, do on-the-spot complete dark formula cold in place recycling after leveling and form ground cold regeneration mix layer 10.Add cement with newly gathering materials toward thick 5% cement Stability Gravel of about 21cm to do 25cm on-the-spot complete dark formula cold in place recycling and is formed, then spray one deck priming oil, priming oil employing PC-2 modified emulsifying asphalt, consumption is 0.7 ~ 1.5L/m2, then does 1cm slurry seal 9; Then overlay 12cmATB-25 dense bitumen stabilization gravel above and form the dense bitumen stabilization gravel mixing bed of material 8, consistent with absolute altitude before upper layer outrigger location to absolute altitude; Respectively lay glass fiber grid 11 across seam 1m at seam crossing, then spill one deck sticking layer oil, sticking layer oil adopts PC-3 modified emulsifying asphalt, and consumption is 0.3 ~ 0.6L/m2; Then whole section 8cmAC-20C modification Paving Bituminous Concrete layer 7 together, then spill one deck sticking layer oil, sticking layer oil adopts PC-3 modified emulsifying asphalt, and consumption is 0.3 ~ 0.6L/m2; Finally pave 4cmSMA-13 modification Paving Bituminous Concrete layer 6.
In the present invention, described cold in place recycling mixing bed of material top embeds and overlays in the dense bitumen stabilization gravel mixing bed of material, cold in place recycling mixing material layer lower part is embedded in Cement Stabilized Sand Gravel, and dense bitumen stabilization gravel and upper layer 1, middle surface layer 2, cutting optimal 3 is mutually chimeric ensure that integrally-built stability;
And the stepped stability also ensured further between the dense bitumen stabilization gravel mixing bed of material and adjacent surface layer in cross section, dense bitumen stabilization gravel mixing bed of material both sides.Finally, total overlays surface layer and adopts integral type section form of structure, improves road surface resistance to overturning further.
In order to reduce the difference between new-old pavement, make the unification more of whole section, the lap length described cold in place recycling mixing bed of material being arranged dense bitumen stabilization gravel layer is 1m, described overlay dense bitumen stabilization gravel layer and adjacent lane seam crossing are equipped with the wide glass fiber grid 11 of 2m, and both sides are respectively across seam 1m.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. the heavy resurfacing method processing different carriageway surfacing road conditions and differ greatly, comprise and there is multiple carriageway surfacings, the old pavement structure of described non-overhaul is provided with asphalt surface course, Cement Stabilized Sand Gravel and soil&stone cushion from top to bottom, it is characterized in that, comprises the following steps:
(1) heavier to disease in old pavement structure middle lane adopts Local Cold Regenerating Technology to carry out basic unit's deep level of processing, and the side track lighter to disease adopts direct Paving Bituminous Concrete layer;
(2) before described Local Cold Regenerating Technology carries out basic unit's deep level of processing, Bituminous concrete surface surface layer within the scope of first milling middle lane, then cold in place recycling is carried out to old basic unit and form the cold in place recycling mixing bed of material, then on the cold in place recycling mixing bed of material, overlay dense bitumen stabilization gravel layer consistent with absolute altitude before the outrigger location of track, side to absolute altitude, last whole section is unified overlays layers of asphalt layer of concrete.
2. the heavy resurfacing method that differs greatly of the different carriageway surfacing road conditions of process according to claim 1, it is characterized in that, it is 4.55m that described middle lane Local Cold Regenerating Technology carries out basic unit's deep level of processing width, and the lap length described cold in place recycling mixing bed of material overlaying dense bitumen stabilization gravel layer is 1m.
3. the heavy resurfacing method that differs greatly of the different carriageway surfacing road conditions of process according to claim 1, is characterized in that, arrange slurry seal between the described cold in place recycling mixing bed of material and dense bitumen stabilization gravel layer.
4. the heavy resurfacing method that differs greatly of the different carriageway surfacing road conditions of process according to claim 1, it is characterized in that, described overlay dense bitumen stabilization gravel layer and adjacent lane seam crossing are equipped with the wide glass fiber grid of 2m, and both sides are respectively across seam 1m.
5. the heavy resurfacing method that differs greatly of the different carriageway surfacing road conditions of process according to claim 1, it is characterized in that, it is SMA-13 modified asphalt concrete layer that described overlay layers of asphalt layer of concrete comprises overlay upper layer, and overlaying cutting optimal is grain formula modified asphalt concrete layer in AC-20C.
6. the heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly, comprise and there is multiple carriageway surfacings, described road structure is provided with upper layer from top to bottom, middle surface layer, cutting optimal, Cement Stabilized Sand Gravel and soil&stone cushion, it is characterized in that, the cold in place recycling mixing bed of material is provided with in the middle part of described road structure, described cold in place recycling mixing bed of material upper surface is provided with the dense bitumen stabilization gravel mixing bed of material, described dense bitumen stabilization gravel mixing bed of material both sides and road surface overlap with stepped form, described dense bitumen stabilization gravel mixing bed of material upper level is mutually concordant with upper layer, described upper layer upper surface is provided with at least one deck Paving Bituminous Concrete layer.
7. a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly according to claim 1, it is characterized in that, described cold in place recycling mixing bed of material top is embedded in the dense bitumen stabilization gravel mixing bed of material.
8. a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly according to claim 1, is characterized in that, is provided with and has slurry seal between described ground cold regeneration mix layer with the dense bitumen stabilization gravel mixing bed of material.
9. a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly according to claim 1, it is characterized in that, described cold in place recycling mixing material layer lower part is embedded in Cement Stabilized Sand Gravel.
10. a kind of heavy resurfacing structure processing different carriageway surfacing road conditions and differ greatly according to claim 1, is characterized in that, the described dense bitumen stabilization gravel mixing bed of material and adjacent upper layer seam crossing upper surface are provided with glass fiber grid.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108316089A (en) * | 2018-03-20 | 2018-07-24 | 华蓝设计（集团）有限公司 | It is a kind of that road surface method is repaired using plain concrete and reinforced concrete |
| CN108643037A (en) * | 2018-04-25 | 2018-10-12 | 广州市市政工程设计研究总院 | A kind of bridge asphalt pavement structure and method of construction |
| CN109487661A (en) * | 2018-11-29 | 2019-03-19 | 江苏北极星交通产业集团有限公司 | A kind of foamed asphalt site Cold Recycling on road surface |
| CN110284390A (en) * | 2019-07-10 | 2019-09-27 | 南京城建隧桥经营管理有限责任公司 | A kind of asphalt pavement structure and its method for paving for city tunnel deformation joint |
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| CN109487661A (en) * | 2018-11-29 | 2019-03-19 | 江苏北极星交通产业集团有限公司 | A kind of foamed asphalt site Cold Recycling on road surface |
| CN110284390A (en) * | 2019-07-10 | 2019-09-27 | 南京城建隧桥经营管理有限责任公司 | A kind of asphalt pavement structure and its method for paving for city tunnel deformation joint |
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| CN105002800B (en) | 2017-04-12 |
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Address after: Municipal Administration Institute of Fuzhou planning and Design Institute, No.1, Gaoxin Avenue, Gaoxin District, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350108 Patentee after: Fuzhou planning and Design Institute Group Co.,Ltd. Address before: Municipal Administration Institute of Fuzhou planning and Design Institute, No.1, Gaoxin Avenue, Gaoxin District, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350108 Patentee before: FUZHOU PLANNING DESIGN & Research Institute |