CN110172890A - A kind of combined assembled cement concrete pavement structure and its method of construction - Google Patents
A kind of combined assembled cement concrete pavement structure and its method of construction Download PDFInfo
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- CN110172890A CN110172890A CN201910555537.7A CN201910555537A CN110172890A CN 110172890 A CN110172890 A CN 110172890A CN 201910555537 A CN201910555537 A CN 201910555537A CN 110172890 A CN110172890 A CN 110172890A
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- 239000004567 concrete Substances 0.000 title claims abstract description 120
- 239000004568 cement Substances 0.000 title claims abstract description 79
- 238000010276 construction Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 18
- 239000010426 asphalt Substances 0.000 claims abstract description 49
- 230000001360 synchronised effect Effects 0.000 claims abstract description 43
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims abstract description 30
- 239000004575 stone Substances 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 23
- 239000002346 layers by function Substances 0.000 abstract description 6
- 230000009429 distress Effects 0.000 abstract description 5
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- 230000036541 health Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 241000581613 Alchemilla arvensis Species 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 238000002513 implantation Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of combined assembled cement concrete pavement structures, comprising: base；The regulating course being laid in the base；The prefabricated concrete slab being laid on the regulating course；The rubber modified asphalt synchronous surface dressing being laid on the prefabricated concrete slab；The rubber modified asphalt concrete being laid on the rubber modified asphalt synchronous surface dressing.Compared with prior art, combined assembled cement concrete pavement structure provided by the invention is composed under specific connection relationship using particular functional layer, there is good interaction between each functional layer, realize the cooperation of layer structure, whole combined assembled cement concrete pavement structure is set to have both high-intensitive and good driving comfort, and the generation that can reduce reflection crack, track improves the service life on road surface.The experimental results showed that the pavement distress indices P CI of combined assembled cement concrete pavement structure provided by the invention is 92.3~95.5, pavement usage situation is excellent.
Description
Technical field
The present invention relates to transport development technical fields, are to be related to a kind of combined assembled cement concrete more specifically
Pavement structure and its method of construction.
Background technique
Traditional pavement structure is divided into bituminous concrete and cement concrete pavement structure, bituminous concrete and coagulating cement
Surface layer of the soil generally as road surface.Traditional cement concrete pavement intensity is higher, but generally artificial mechanism cast in situs and
At the live health duration is longer, and road surface after molding leads to the condition in high speed traveling due to the presence of longitudinal joint and transverse joint
It is lower to generate apparent noise and phenomenon of jolting；And asphalt concrete pavement does not need to set T-joining, driving comfort is preferable, but makes
Valence is higher.And base generally uses cement stabilized type or two ash stability class material.It is well known that base is the load-bearing of pavement structure
Layer；However cement stabilized type or the two ash stability class strength of materials are low, are also easy to produce under the influence of Water Damage loosely, additionally, due to this
Class base material is also easy to produce Wensu and desciccation crack, eventually leads to road surface and the diseases such as reflection crack and pit slot occurs.
In order to utilize the intensity of cement concrete to greatest extent, while the comfort of traveling is improved, produced existing
Composite type concrete pavement technology, i.e., pave one layer of bituminous concrete surface again on cast-in-place molding cement concrete top surface
Layer, interlayer dispense sticking layer oil and are attached.But the cement concrete of one side cast in situs needs health (14 days to 28 days)
And close traffic, therefore the duration is longer；Only pass through one layer of sticking layer oil between another aspect cement concrete and asphalt concrete pavement
Bonding, seaming position also do not carry out any processing, are also easy to produce reflection crack, influence the service life and ride comfort of asphalt surface course
Property；And use sticking layer oil bonding interlayer contact partly to slide into sliding mode, interlaminar shear is larger, it is easier that asphalt surface course produces
The diseases such as raw track.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of combined assembled cement concrete pavement structure and its construction
Method, combined assembled cement concrete pavement structure provided by the invention have both high-intensitive and good driving comfort, and
The generation that reflection crack, track can be reduced improves the service life on road surface.
The present invention provides a kind of combined assembled cement concrete pavement structures, comprising:
Base；
The regulating course being laid in the base；
The prefabricated concrete slab being laid on the regulating course；
The rubber modified asphalt synchronous surface dressing being laid on the prefabricated concrete slab；
The rubber modified asphalt concrete being laid on the rubber modified asphalt synchronous surface dressing.
Preferably, the base includes new pavement base or old pavement base.
Preferably, the new pavement base is selected from cement stabilized macadam base, lime-fly ash stabilized macadam or rolls mixed
Solidifying soil matrix layer.
Preferably, the regulating course includes one in rubber modified asphalt synchronous surface dressing, graded gravel and medium coarse sand
Kind is a variety of.
Preferably, the flexural tensile strength of the prefabricated concrete slab is 4MPa~6MPa, with a thickness of 22cm~30cm.
Preferably, the rubber modified asphalt synchronous surface dressing with a thickness of 0.3cm~0.7cm.
Preferably, the rubber modified asphalt concrete is selected from rubber modified asphalt concrete AC-13 or modified rubber drips
Green concrete SMA-13；
The rubber modified asphalt concrete with a thickness of 2cm~6cm.
The present invention also provides a kind of building for combined assembled cement concrete pavement structure described in above-mentioned technical proposal
Make method, comprising the following steps:
A) on-site test is carried out to base, in the qualified substrate top surface paving and leveling layer of detection, and be compacted and levelling；
B) prefabricated concrete slab is lifted on the regulating course, is assembled；
C) it paves rubber modified asphalt synchronous surface dressing in the prefabricated concrete slab top surface, finally in top surface
The rubber modified asphalt concrete that paves rolls, open to traffic.
Preferably, the requirement of on-site test described in step a) is " highway road surface construction technology detailed rules and regulations ".
Preferably, the process of assembly described in step b) specifically:
After lifting prefabricated concrete slab on the regulating course, implantation transmission rod, pull rod and setting are vertically and horizontally applied
Work seam assemble between plate by cast-in-place water-proof concrete；Then it is carried out after blowing assembled panel surface dust longitudinal and transverse
Stickup to seam crossing anti-splitting paster.
Preferably, the rubber modified asphalt synchronous surface dressing that paves described in step c) uses synchronous fragmental stone sealing layer spreading machine
It constructs, wherein rubber modified asphalt dosage is 2.0kg/m3~2.5kg/m3, rubble is that 4.75mm~9.5mm simple grain diameter is broken
Stone.
The present invention provides a kind of combined assembled cement concrete pavement structures, comprising: base；It is laid on the base
On regulating course；The prefabricated concrete slab being laid on the regulating course；It is laid on the prefabricated concrete
Rubber modified asphalt synchronous surface dressing on plate；The modified rubber being laid on the rubber modified asphalt synchronous surface dressing
Bituminous concrete.Compared with prior art, combined assembled cement concrete pavement structure provided by the invention uses specific function
Ergosphere is composed under specific connection relationship, has good interaction between each functional layer, realizes the cooperation of layer structure,
So that whole combined assembled cement concrete pavement structure is had both high-intensitive and good driving comfort, and reflection can be reduced
The generation in crack, track improves the service life on road surface.The experimental results showed that combined assembled cement provided by the invention is mixed
The pavement distress indices P CI of solidifying soil surface structure is 92.3~95.5, and pavement usage situation is excellent.
In addition, compared with traditional asphalt concrete pavement structure, combined assembled cement concrete provided by the invention
Pavement structure can substantially save the duration and save cost；It is computed, about 14~51 yuan of saving cost of every square metre of cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of combined assembled cement concrete pavement structure provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram for the combined assembled cement concrete pavement structure that the embodiment of the present invention 1 provides；
Fig. 3 is the schematic diagram for the combined assembled cement concrete pavement structure that the embodiment of the present invention 2 provides.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of combined assembled cement concrete pavement structures, comprising:
Base；
The regulating course being laid in the base；
The prefabricated concrete slab being laid on the regulating course；
The rubber modified asphalt synchronous surface dressing being laid on the prefabricated concrete slab；
The rubber modified asphalt concrete being laid on the rubber modified asphalt synchronous surface dressing.
In the present invention, the combined assembled cement concrete pavement structure successively includes base, leveling from bottom to top
Layer, prefabricated concrete slab, rubber modified asphalt synchronous surface dressing and rubber modified asphalt concrete.Referring to Figure 1
It is shown, wherein 1 is base, and 2 be regulating course, and 3 be prefabricated concrete slab, and 4 seal for rubber modified asphalt synchronous breakstone
Layer, 5 be rubber modified asphalt concrete.
In the present invention, the base preferably includes new pavement base or old pavement base；The new pavement base
It is broken to be preferably selected from cement stabilized macadam base, lime-fly ash stabilized macadam or grinding coagulation soil matrix layer, more preferably cement stabilizing
Ground mass layer；The new pavement base meets " highway road surface construction technology detailed rules and regulations " intensity requirement.It is provided by the invention multiple
It closes assembled cement concrete pavement structure and is suitable for new pavement and old pavement reparation simultaneously.It is preferred real at the present invention one
It applies in example, the base is newly-built cement stabilized macadam base；The thickness of the cement stabilized macadam base is preferably 32cm
~40cm, more preferably 36cm；The match ratio of the cement stabilized macadam of the cement stabilized macadam base is 5:95.In the present invention
In another preferred embodiment, the base is old pavement base, and the present invention can on this basis repair it.
In the present invention, the regulating course is laid in the base；The regulating course preferably includes rubber modified asphalt
One of synchronous surface dressing, graded gravel and medium coarse sand are a variety of, more preferably rubber modified asphalt synchronous surface dressing
Or the combination of graded gravel and medium coarse sand.In a preferred embodiment of the invention, the regulating course is rubber modified asphalt
Synchronous surface dressing is more applicable for the leveling that the base is new pavement base；The rubber modified asphalt synchronous breakstone
The thickness of sealing is preferably 0.8cm~1.2cm, more preferably 1cm；Rubber changes in the rubber modified asphalt synchronous surface dressing
Property asphalt content is preferably 2.0kg/m3~2.5kg/m3, rubble is preferably the mono- Stone of 4.75mm~9.5mm.In the present invention
In another preferred embodiment, the regulating course is the combination of graded gravel and medium coarse sand, and being more applicable for the base is
The leveling of old pavement base, wherein the graded gravel is laid in the old pavement base, and the medium coarse sand is laid on described
On graded gravel；The thickness of the graded gravel is preferably 8cm~12cm, more preferably 10cm；The thickness of the medium coarse sand is excellent
It is selected as 3cm~7cm, more preferably 5cm.
In the present invention, the prefabricated concrete slab is laid on the regulating course；The present invention is to the assembly
The source of formula precast slab is not particularly limited, using the assembled well known to those skilled in the art being prefabricated in the factory
Armoured concrete slab.The present invention uses prefabricated concrete slab on the basis of making full use of the intensity of cement concrete,
Construction quality can be efficiently controlled, and saves live conditioned time, it can be to pour high-early strength concrete immediately after handling
It is assembled, it is only necessary to which health can carry out the making of upper layer bituminous concrete for 24 hours, save the duration.In the present invention, institute
The flexural tensile strength for stating prefabricated concrete slab is preferably 4MPa~6MPa, more preferably 5MPa；It is described prefabricated mixed
The thickness of concrete board is preferably 22cm~30cm, more preferably 26cm.
In the present invention, the rubber modified asphalt synchronous surface dressing is laid on the prefabricated concrete slab
On；Sealing is that heated bitumen and rubble, wrapping and bonding by pitch, Neng Goufang are sprayed on prefabricated cement concrete plate
Only surface air precipitation etc. penetrates into inside pavement structure along vertically and horizontally construction joint.In the present invention, the rubber modified asphalt is same
The thickness for walking crushed stone sealing is preferably 0.3cm~0.7cm, more preferably 0.5cm；The rubber modified asphalt synchronous surface dressing
Middle rubber modified asphalt dosage is preferably 2.0kg/m3~2.5kg/m3, rubble is preferably the mono- Stone of 4.75mm~9.5mm.
In the present invention, the rubber modified asphalt concrete is laid on the rubber modified asphalt synchronous surface dressing
On；The rubber modified asphalt concrete is preferably selected from rubber modified asphalt concrete AC-13 or rubber modified asphalt concrete
SMA-13；The present invention is not particularly limited the source of the rubber modified asphalt concrete, ripe using those skilled in the art
The rubber that the manner of formulation of the above-mentioned rubber modified asphalt concrete AC-13 or rubber modified asphalt concrete SMA-13 that know obtain
Modified asphalt concrete.In the present invention, the thickness of the rubber modified asphalt concrete is preferably 2cm~6cm, more excellent
It is selected as 4cm.
Combined assembled cement concrete pavement structure provided by the invention is using particular functional layer in specific connection relationship
Under be composed, there is good interaction between each functional layer, realize the cooperation of layer structure, make whole combined assembled water
Cement concrete pavement structure has both high-intensitive and good driving comfort, and can reduce the generation of reflection crack, track, mentions
The service life on high road surface.
The present invention also provides a kind of building for combined assembled cement concrete pavement structure described in above-mentioned technical proposal
Make method, comprising the following steps:
A) on-site test is carried out to base, in the qualified substrate top surface paving and leveling layer of detection, and be compacted and levelling；
B) prefabricated concrete slab is lifted on the regulating course, is assembled；
C) it paves rubber modified asphalt synchronous surface dressing in the prefabricated concrete slab top surface, finally in top surface
The rubber modified asphalt concrete that paves rolls, open to traffic.
The present invention carries out on-site test to base first, in the qualified substrate top surface paving and leveling layer of detection, and is compacted simultaneously
It is levelling.In the present invention, the base and regulating course with it is as described in the above technical scheme identical, details are not described herein.
In the present invention, the requirement of the on-site test is preferably " highway road surface construction technology detailed rules and regulations " (JTG/T
F20-2015)；The detailed programs of the on-site test include: substrate surface elevation and compactness, flatness, horizontal slope and described
The CBR value of old pavement base roadbed or the intensity of the new pavement base.
The present invention is not particularly limited the equipment of the paving and leveling layer, is rubber modified asphalt for the regulating course
The case where synchronous surface dressing, using fragmental stone sealing layer spreading machine well known to those skilled in the art.
After obtaining the regulating course, the present invention lifts prefabricated concrete slab on the regulating course, is assembled.
In the present invention, the prefabricated concrete slab with it is as described in the above technical scheme identical, details are not described herein.This hair
The bright equipment to the lifting is not particularly limited, using lifting machine well known to those skilled in the art.
In the present invention, the process of the assembly is preferred specifically:
After lifting prefabricated concrete slab on the regulating course, implantation transmission rod, pull rod and setting are vertically and horizontally applied
Work seam assemble between plate by cast-in-place water-proof concrete；Then it is carried out after blowing assembled panel surface dust longitudinal and transverse
Stickup to seam crossing anti-splitting paster.In the present invention, the water-proof concrete is preferably the early strong water-proof concrete of C40 or C50 early
Strong water-proof concrete.In the present invention, the equipment of the blowing is preferably strong blowing machine.The present invention uses the skill of above-mentioned assembly
Art scheme can be further reduced caused by the stress that Wensu crack and bottom are generated due to construction precision is concentrated and split
Seam, and reduce vertically and horizontally reflection crack of the construction joint to surface layer.
After completing the assembly for filling prefabricated concrete slab, the present invention is on the prefabricated concrete slab top
Face paves rubber modified asphalt synchronous surface dressing, and finally in top surface, the rubber modified asphalt concrete that paves is rolled, open to traffic.
In the present invention, the rubber modified asphalt synchronous surface dressing and rubber modified asphalt concrete and institute in above-mentioned technical proposal
That states is identical, and details are not described herein.
In the present invention, the rubber modified asphalt synchronous surface dressing that paves preferably uses synchronous fragmental stone sealing layer spreading machine
It constructs；Wherein, rubber modified asphalt dosage is preferably 2.0kg/m3~2.5kg/m3, rubble is preferably 4.75mm~9.5mm
Single Stone.
Compared with traditional asphalt concrete pavement structure, combined assembled cement concrete pavement knot provided by the invention
The method of construction of structure can substantially save the duration and save cost；It is computed, every square metre of saving cost about 14~51 of cost
Member.
The present invention provides a kind of combined assembled cement concrete pavement structures, comprising: base；It is laid on the base
On regulating course；The prefabricated concrete slab being laid on the regulating course；It is laid on the prefabricated concrete
Rubber modified asphalt synchronous surface dressing on plate；The modified rubber being laid on the rubber modified asphalt synchronous surface dressing
Bituminous concrete.Compared with prior art, combined assembled cement concrete pavement structure provided by the invention uses specific function
Ergosphere is composed under specific connection relationship, has good interaction between each functional layer, realizes the cooperation of layer structure,
So that whole combined assembled cement concrete pavement structure is had both high-intensitive and good driving comfort, and reflection can be reduced
The generation in crack, track improves the service life on road surface.The experimental results showed that combined assembled cement provided by the invention is mixed
The pavement distress indices P CI of solidifying soil surface structure is 92.3~95.5, and pavement usage situation is excellent.
In addition, compared with traditional asphalt concrete pavement structure, combined assembled cement concrete provided by the invention
The method of construction of pavement structure can substantially save the duration and save cost；It is computed, every square metre of saving cost of cost is about
14~51 yuan.
In order to further illustrate the present invention, it is described in detail below by following embodiment.
Embodiment 1
The schematic diagram for the combined assembled cement concrete pavement structure that the embodiment of the present invention 1 provides is shown in Figure 2；Its
In, 1 is cement stabilized macadam base, and with a thickness of 36cm, the match ratio of the cement stabilized macadam is 5:95；2 be modified rubber
Pitch synchronous surface dressing, with a thickness of 1cm；3 be prefabricated concrete slab, and design flexural tensile strength is 5.0MPa, with a thickness of
26cm；4 be rubber modified asphalt synchronous surface dressing, with a thickness of 0.5cm；5 be rubber modified asphalt concrete AC-13, thickness
For 4cm.
Above-mentioned combined assembled cement concrete pavement structure is applied into a Class II highway in newly-built northeast somewhere,
Method of construction is as follows:
(1) it is laid with cement stabilized macadam base, then cement stabilized macadam base surface elevation and pressure described in on-site test
Whether solidity, flatness, the intensity of horizontal slope and the cement stabilized macadam base meet that " highway road surface construction technology is thin
Then " the requirement of (JTG/T F20-2015), and the prefabricated section lifted to needs is positioned, setting-out.
(2) it paves rubber modified asphalt synchronous surface dressing in the qualified cement stabilized macadam base top surface of detection, compacting
And it is levelling.
(3) prefabricated concrete slab is lifted, transmission rod, pull rod and setting vertically and horizontally construction joint are implanted into, by cast-in-place
C40 early strong water-proof concrete assemble between plate；Then it is laggard assembled panel surface dust to be blown down using strong blowing machine
The stickup of row vertical, horizontal seam crossing anti-splitting paster.
(4) it paves rubber modified asphalt synchronous surface dressing in the prefabricated concrete slab top surface, is finally pushing up
The face rubber modified asphalt concrete AC-13 that paves is rolled, open to traffic.
The newly-built Class II highway volume of traffic is larger, and heavy vehicle is more；And since the area belongs to seasonal frost
Area, winter salt corrosion cement concrete pavement is more typical, the undisguised phenomenon of surface large area easily occurs.Due to by seasonal effect,
Construction period is shorter, is difficult to realize build using conventional composite formula cement concrete pavement technology.
The combined assembled cement concrete pavement structure and its method of construction provided using the embodiment of the present invention 1, by 1
The observation and investigation in year: under the effect of the identical volume of traffic, the combined assembled cement concrete pavement of the offer of the embodiment of the present invention 1
The track of structure is the half of asphalt concrete track, illustrates the combined assembled water that the embodiment of the present invention 1 provides
Cement concrete pavement structure has good Rut resistance effect；Pavement distress indices P CI be 95.5, in 85-100 it
Between, pavement usage situation be it is excellent, specific testing result ginseng is shown in Table 1.
The PCI detection for the combined assembled cement concrete pavement structure that 1 embodiment of the present invention 1 of table provides
As a result
Embodiment 2
The schematic diagram for the combined assembled cement concrete pavement structure that the embodiment of the present invention 2 provides is shown in Figure 3；Its
In, 1 is old pavement base；2 ' be graded gravel, with a thickness of 10cm；2 be medium coarse sand, with a thickness of 5cm；3 be prefabricated mixed
Concrete board, design flexural tensile strength is 5.0MPa, with a thickness of 26cm；4 be rubber modified asphalt synchronous surface dressing, with a thickness of
0.5cm；5 be rubber modified asphalt concrete SMA-13, with a thickness of 4cm.
By above-mentioned combined assembled cement concrete pavement structure apply repair northeast somewhere be open to traffic 20 years certain two
The stone arch bridge deck paving of grade highway, method of construction are as follows:
(1) on-site test roadbed (old pavement base) surface elevation and compactness, flatness, the CBR value of horizontal slope and roadbed
Whether the requirement of " highway road surface construction technology detailed rules and regulations " (JTG/T F20-2015) is met, and to the prefabricated section that needs lift
It is positioned, setting-out.
(2) it successively paves graded gravel and medium coarse sand, is compacted simultaneously levelling in the qualified roadbed top surface of detection.
(3) prefabricated concrete slab is lifted, transmission rod, pull rod and setting vertically and horizontally construction joint are implanted into, by cast-in-place
C40 early strong water-proof concrete assemble between plate；Then it is laggard assembled panel surface dust to be blown down using strong blowing machine
The stickup of row vertical, horizontal seam crossing anti-splitting paster.
(4) it paves rubber modified asphalt synchronous surface dressing in the prefabricated concrete slab top surface, is finally pushing up
The face rubber modified asphalt concrete SMA-13 that paves is rolled, open to traffic.
The Class II highway volume of traffic is larger, and lorry is more, and stone arch bridge bridge floor is asphalt concrete pavement originally, and existing bridge floor goes out
More serious track and pit slot are showed, and bottom infiltration phenomenon occurs in stone arch bridge；Preliminary judgement is that heavy-duty vehicle spreads bridge floor
Dress damage causes rainwater infiltration that stone arch bridge is caused to seep water.Therefore, it is necessary to be reinforced to stone arch bridge, and to deck paving thereon
Excavated, restores pavement strength；Since this Class II highway volume of traffic is larger, and stone arch bridge transformation close traffic Vehicle By-pass compared with
Far, it without available sidewalk, therefore is repaired using above-mentioned combined assembled cement concrete pavement structure, half range closing half
Width is open to traffic.
The combined assembled cement concrete pavement structure and its method of construction provided using the embodiment of the present invention 2, to repairing
Stone arch bridge deck conditions after multiple have passed through nearly observation in 1 year and investigation: according to " highway engineering condition state standard "
(JTG H20-2007) is it is found that the well damage degree of bridge floor road table function is that slightly, road surface breakage conversion coefficient K selection is light
Micro- grade, Damage Types mainly have transverse joint, longitudinal joint, track and pitted skin, for track, using 15mm as boundary, when rutting depth is small
In 15mm, belong to the secondary densification of asphalt, disregard damage area, table 2 is each disease statistical length/area and PCI meter
Calculate result；Can be seen that the bridge floor pavement distress indices P CI after repairing from the PCI after statistics is 92.3, pavement usage shape
Condition is excellent.
The PCI for the combined assembled cement concrete pavement structure that 2 embodiment of the present invention 2 of table provides detects knot
Fruit
In addition, compared with traditional asphalt concrete pavement structure, combined assembled cement concrete provided by the invention
About 14~51 yuan of saving cost of every square metre of pavement structure cost, referring specifically to shown in table 3.
The combined assembled cement concrete pavement structure provided by the invention of table 3 and traditional bituminous concrete
The cost comparison sheet of pavement structure
The above description of the disclosed embodiments, enables those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (10)
1. a kind of combined assembled cement concrete pavement structure, comprising:
Base；
The regulating course being laid in the base；
The prefabricated concrete slab being laid on the regulating course；
The rubber modified asphalt synchronous surface dressing being laid on the prefabricated concrete slab；
The rubber modified asphalt concrete being laid on the rubber modified asphalt synchronous surface dressing.
2. combined assembled cement concrete pavement structure according to claim 1, which is characterized in that the base includes
New pavement base or old pavement base.
3. combined assembled cement concrete pavement structure according to claim 2, which is characterized in that the new pavement
Base is selected from cement stabilized macadam base, lime-fly ash stabilized macadam or grinding coagulation soil matrix layer.
4. combined assembled cement concrete pavement structure according to claim 1, which is characterized in that the regulating course packet
Include one of rubber modified asphalt synchronous surface dressing, graded gravel and medium coarse sand or a variety of.
5. combined assembled cement concrete pavement structure according to claim 1, which is characterized in that the assembled is pre-
The flexural tensile strength of concrete slab processed is 4MPa~6MPa, with a thickness of 22cm~30cm.
6. combined assembled cement concrete pavement structure according to claim 1, which is characterized in that the modified rubber
Pitch synchronous surface dressing with a thickness of 0.3cm~0.7cm.
7. combined assembled cement concrete pavement structure according to claim 1, which is characterized in that the modified rubber
Bituminous concrete is selected from rubber modified asphalt concrete AC-13 or rubber modified asphalt concrete SMA-13；
The rubber modified asphalt concrete with a thickness of 2cm~6cm.
8. a kind of method of construction of the described in any item combined assembled cement concrete pavement structures of claim 1~7, including
Following steps:
A) on-site test is carried out to base, in the qualified substrate top surface paving and leveling layer of detection, and be compacted and levelling；
B) prefabricated concrete slab is lifted on the regulating course, is assembled；
C) it paves rubber modified asphalt synchronous surface dressing in the prefabricated concrete slab top surface, finally paves in top surface
Rubber modified asphalt concrete rolls, open to traffic.
9. method of construction according to claim 8, which is characterized in that the process of assembly described in step b) specifically:
After lifting prefabricated concrete slab on the regulating course, it is implanted into transmission rod, pull rod and setting vertically and horizontally construction joint,
By cast-in-place water-proof concrete, assemble between plate；Then vertical, horizontal seam is carried out after blowing down assembled panel surface dust
Locate the stickup of anti-splitting paster.
10. method of construction according to claim 8, which is characterized in that the rubber modified asphalt that paves described in step c) is same
Step crushed stone sealing is constructed using synchronous fragmental stone sealing layer spreading machine, wherein rubber modified asphalt dosage is 2.0kg/m3~
2.5kg/m3, rubble is the mono- Stone of 4.75mm~9.5mm.
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