CN204662193U - Oblique prestressing force cement concrete-bituminous concrete composite pavement - Google Patents
Oblique prestressing force cement concrete-bituminous concrete composite pavement Download PDFInfo
- Publication number
- CN204662193U CN204662193U CN201520321147.0U CN201520321147U CN204662193U CN 204662193 U CN204662193 U CN 204662193U CN 201520321147 U CN201520321147 U CN 201520321147U CN 204662193 U CN204662193 U CN 204662193U
- Authority
- CN
- China
- Prior art keywords
- prestressing force
- concrete
- cement concrete
- force cement
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Road Paving Structures (AREA)
Abstract
Oblique prestressing force cement concrete-bituminous concrete composite pavement, comprise the oblique prestressing force cement concrete layer be arranged in basic unit, oblique prestressing force cement concrete layer is provided with asphalt concrete layer, between described oblique prestressing force cement concrete layer and asphalt concrete layer, is provided with adhesive linkage.This composite pavement is applicable to making in Heavy Traffic road; Surface course uses bituminous concrete, not only makes road surface comfortableness be improved, and reduces the noise that vehicle travels, and also to weaken in vehicle travel process light to the stimulation of driver's vision simultaneously.In addition, the utility model improves the intensity of cement concrete slab, extends Road Service Life, decreases the expense of maintenance, and within whole service life, expense comparatively reduces on other road surfaces every year on average.
Description
Technical field
The utility model relates to a kind of road structure, is specifically related to a kind of oblique prestressing force cement concrete-bituminous concrete composite pavement.
Background technology
Along with the development of national economy, highway in China construction achieves remarkable achievement.Ended for the end of the year 2013, highway in China total kilometrage has reached 435.62 ten thousand kilometers, and wherein speedway mileage reaches 10.44 ten thousand kilometers, already the rank whole world the first, indicates that China's expressway construction enters a comprehensive developing period fast.
According to the statistical description of Competent Authorities of Transport and Communications, building up and in the speedway built, flexible pavement mileage accounts for up to more than 90%, its reason is the more traditional very large advantage of cement concrete pavement tool of flexible pavement, as: flexible pavement surfacing is without seam, and road-ability is good; The two poles of the earth damping on wheel and road surface, shake little, noise is little; Construction period is short, and open to traffic is fast; Flexible pavement is airborne dust not, easy cleaning, and late maintaining maintenance is easy; Reproducible utilization, suitable stage construction etc.
Although flexible pavement exists above advantage, along with the development of Modern Traffic, Road Overload phenomenon is constantly aggravated, and the problems that flexible pavement exists also come out gradually: various disease is as rut, Moisture Damage, aging cracking etc.; Application life does not reach projected life; Invest excessive etc.
The expressway construction of the new period from original Eastern Plain area gradually to western mountainous areas transition, due to the special geomorphology in mountain area, cause there will be more bridge in highway construction process, the structures such as tunnel, this often brings inconvenience to highway construction, such as, section between the bridge structure thing that spacing only has tens of rice even shorter, if conveniently design on making, in, lower three surface layers, road roller often can be caused excessively near apart from abutment when compaction in layers, easy infringement bridge structure thing, or road roller cannot be reversed end for end, cause the problems such as compactness of pavement is not enough, thus cause road structure poor durability, do not reach design service life, make late maintaining cost high.
Utility model content
In order to overcome the problems of the prior art, the utility model object is to provide oblique prestressing force cement concrete-bituminous concrete composite pavement, and this road structure is composite road surface structure, not only can normally be open to traffic, and durable more, and late maintaining cost is low.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Oblique prestressing force cement concrete-bituminous concrete composite pavement, comprise the oblique prestressing force cement concrete layer be arranged in basic unit, oblique prestressing force cement concrete layer is provided with asphalt concrete layer, between described oblique prestressing force cement concrete layer and asphalt concrete layer, is provided with adhesive linkage.
The thickness of described oblique prestressing force cement concrete layer is 22 ~ 26cm.
The thickness of described tack coat is 0.5 ~ 1cm.
The thickness of described asphalt concrete layer is 4 ~ 6cm.
The construction method of oblique prestressing force cement concrete-bituminous concrete composite pavement, first the oblique prestressing force cement concrete of making one deck 22 ~ 26cm in the basic unit on road surface, after forming oblique prestressing force cement concrete layer, to be the tack coat of 0.5 ~ 1cm in oblique prestressing force cement concrete surface spreading a layer thickness after the milling of oblique prestressing force cement concrete surface again, the bituminous concrete of making one deck 4 ~ 6cm on adhesive linkage, forms asphalt concrete layer.
Described tack coat adopts rubber asphalt synchronous surface dressing, and carries out asphalt distribution and crushed stone spreading by crushed stone sealing machine.
The speed of described crushed stone sealing machine is 1.5 ~ 2km/h, and pitch spreading amount is 1.69 ~ 1.71kg/m
2, pitch sprinkling temperature is 180 ~ 190 DEG C; The spreading amount of rubble is 7kg/m
2, rubble spread temperature is 130 DEG C.
The particle diameter of described rubble is 4.75 ~ 9.5mm.
During the oblique prestressing force cement concrete of described making one deck 22 ~ 26cm, the layout angle of oblique prestressed reinforcement and the angle of road longitudinal direction are 30 ° ~ 45 °, and arrange oblique prestressed reinforcement in the 1cm position, lower middle of concrete thickness.
During the oblique prestressing force cement concrete of described making one deck 22 ~ 26cm, prestressing force applies at twice, and in 3 days after-applied first times of concrete making, and to apply intensity be 30% of reinforcement yielding intensity; In concrete making 7 days after-applied second time, and applying intensity is 70% of reinforcement yielding intensity.
Compared with prior art, the beneficial effect that has of the utility model patent:
(1) give full play to the feature of tempering toughness with gentleness, promote and adapt to heavily loaded ability.
Composite pavement of the present utility model is stiff-flexible bonding pavement, owing to arranging oblique prestressing force cement concrete layer and asphalt concrete layer, so the characteristic of two kinds of different ground surface materials can be given full play to, play the strong point of materials and structures, form road structure that is firm but gentle, that temper toughness with gentleness; Because oblique prestressed concrete intensity is high, so the most stress under can carrying surface layer transmission, therefore this composite pavement is applicable to making in Heavy Traffic road; Surface course uses bituminous concrete, not only makes road surface comfortableness be improved, and reduces the noise that vehicle travels, and also to weaken in vehicle travel process light to the stimulation of driver's vision simultaneously.
(2) save cost, extend Road Service Life.
By oblique for prestressed concrete in cutting optimal in the utility model, the construction technology of its concrete slab and quality specifications can suitably reduce, such as the performance indications such as planeness and antiskid, and asphalt surface course can provide the performance of more high-quality, reduce construction costs; Although add prestressed reinforcement to add a part of cost, also improve the intensity of cement concrete slab, extend Road Service Life, decrease the expense of maintenance, within whole service life, expense comparatively reduces on other road surfaces every year on average.
(3) easy maintenance, has environment protection significance.
The composite pavement intensity that the utility model provides is high, and bearing capacity is strong, and therefore in whole life cycle, be not easy to produce disease, maintenance frequency is few compared with other road surfaces, reduces later maintenance cost.
(4) suit measures to local conditions, be suitable for loess special geomorphology area.
Composite pavement of the present utility model is particularly suitable for the structures such as the less bridge of spacing and culvert and connects section, i.e. short circuit base section, not only can reduce the impact of construction factor on structures such as bridges, and the cooperative transformation on this type of section structure and road surface can be improved.
Further, because this composite pavement top layer asphalt concrete layer is thin, be only 4 ~ 6cm, so pitch use amount can be reduced, bitumen layer durability is less than oblique prestressed concrete soil layer simultaneously, is generally that bitumen layer is first destroyed, and only top layer need be excluded, mixed oblique prestressed concrete soil layer does not need to process the new surface course that can pave again substantially, keeps in repair fast very convenient.Comparatively asphalt concrete pavement has saved bituminous material simultaneously, compares cement concrete pavement and decreases the pollution of cement to environment, therefore have good social benefit and environment protection significance.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present utility model.
Wherein, 1-asphalt concrete layer, 2-tack coat, the oblique prestressing force cement concrete layer of 3-, 4-basic unit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described.
As shown in Figure 1, the utility model comprises the oblique prestressing force cement concrete layer 3 be arranged in basic unit 4, oblique prestressing force cement concrete layer 3 is provided with asphalt concrete layer 1, adhesive linkage 2 is provided with between described oblique prestressing force cement concrete layer 3 and asphalt concrete layer 1, the thickness of described oblique prestressing force cement concrete layer 3 is 22 ~ 26cm, the tack coat 2 of 0.5 ~ 1cm on spreading after the milling of oblique prestressing force cement concrete layer 3, tack coat 2 adopts rubber asphalt synchronous surface dressing, the asphalt concrete layer 1 that making 4 ~ 6cm is thick on tack coat 2 subsequently, form composite road surface structure.
Generally common asphalt pavement of highway structure is respectively soil matrix, subbase, upper basic unit, cutting optimal, middle surface layer and upper layer from top to bottom.Composite road surface structure of the present utility model is the oblique prestressing force cement concrete layer that making one deck 22 ~ 26cm is thick in basic unit, during the oblique prestressing force cement concrete of making, the layout angle of oblique prestressed reinforcement and the angle of road longitudinal direction are 30 ° ~ 45 °, and arrange in the 1cm position, lower middle of concrete thickness.Prestressing force applies at twice, and in 3 days after-applied first times of concrete making, apply intensity and be about 30% of reinforcement yielding intensity, second time is at concrete making after 7 days, and applying intensity is 70% of reinforcement yielding intensity.Carry out milling process to concrete surface afterwards, then spreading last layer tack coat after road cleaning, thickness is 0.5 ~ 1cm, and the asphalt concrete layer of making 4 ~ 6cm forms stiff-flexible bonding pavement structure in the above more subsequently.
Construction method of the present utility model is specially: first, the oblique prestressing force cement concrete of first making one deck 22 ~ 26cm in the basic unit 4 on road surface, form oblique prestressing force cement concrete layer 3, the Specific construction flow process of the oblique prestressing force cement concrete of making one deck 22 ~ 26cm is as follows:
1, shuttering, put U-shaped plate
Basic unit is poor concrete, employing be firm template, template bottom surface and substrate top surface are close together, local low-lying handling affairs first pave by cement mortar.Checking after model sheetinstallat that joint obtains inside the discrepancy in elevation and template is whether misplace.Joint obtains highness change within 3mm.Because presstressed reinforcing steel length in reserve is generally 40 ~ 60cm, common punching block cannot ensure passing of presstressed reinforcing steel, so template has the groove of an opening at a certain distance, is to put fixing frame plate, fixing frame plate must be put correctly, can not have larger deviation.If have larger deviation by uneven for the reinforcement location caused in same level, after stretch-draw, discontinuity can be caused.
2, sliding layer is laid
The laying of sliding layer should meet defined in " prestressed concrete pavement engineering legislation " GB50422-2007.The end face being arranged on basic unit of sliding layer, basic unit should be smooth recessed without hole.The material of sliding layer can select geotextiles, asphaltic felt, polyethylene sheeting or acinous material, and acinous material can select the fine sand or aggregate chips that particle diameter is close.When adopting acinous material-paving sliding layer, the thickness of acinous material should not be greater than 20mm, and it should lay waterproofing materials.What in the utility model, test section was laid is the layer of sand (diameter is less than 0.3mm) that 1cm is thick, and plays the effect of leveling and less frictional resistance at layer of sand upper berth layer of polyethylene film.Wherein, the smooth and polyethylene sheeting integrality of base treatment is the key of this technology, the finger stone inside layer of sand is eliminated and is made film as far as possible all contact with fine sand and do not occur that bulge is also important.
3, distributing bar is laid
Row's distributing bar is arranged at each side of road width, object is the insufficient strength in order to road periphery, use reinforcing bar reinforcement, another one function is in order to the bad Shi Hanzhang in place near abutment, one end is added concrete fix, at reinforcing bar other end Shi Hanzhang, enable to reach required power size.
4, muscle, alignment presstressed reinforcing steel is worn
The plain bar of the reinforcing bar of constructing in the utility model to be diameter be 10mm, will calculate the presstressed reinforcing steel of length by fixed mount, with runway direction be 45 degree angle.Be divided into Liang Fu road to construct, object is in order to uninterrupted traffic.Presstressed reinforcing steel adopts bidirectional crossed layout.Along road surface, longitudinally the spacing of adjacent two reinforcing bars is 50cm.Need alignment after prestressed reinforcement arranges, guarantee that reinforcing bar is vertical with fixing frame plate.
5, fixing split heads
The making of split heads is drawn by two springs by the short reinforcing bar of a joint, and can stand on sliding layer, be used for propping up presstressed reinforcing steel, the height of split heads determined by prestressed height.In the utility model, the concrete thickness of test section is 24cm, the height of split heads is defined as 1cm fewer than concrete thickness half, be highly 11cm, the curved reinforcing bar machine that draws is utilized to be made by split heads, then with tiny steel wire split heads tied up the position intersected at presstressed reinforcing steel, be presstressed reinforcing steel in centre, also can keep certain height, guarantee to reduce concrete destruction with during post-stress, avoid the presstressed reinforcing steel positioning when concreting.
6, anticorrosion grease is brushed
The brushing of anticorrosion grease, after fixing split heads, needs manually to brush, cumbersome, needs larger manpower, guarantees that every nook and cranny can on figure.The brushing object of anticorrosion grease is to make prestressing force in the future and water segregation, and being not easy corrosion, is that the life-span of prestressing force cement concrete pavement is longer.
7, concreting
Because the road surface of test section needs the success of total length disposable making, but due to the existence of steel mesh reinforcement, add intensity and the difficulty of concrete speading.Paving process transfers hopper by crane the cement concrete that truck-transit mixer transport comes is transferred to making position, and then by being drawn forward by walking beam, uneven part crooked chisel is filled.Must be real with vibrating spear puddling in casting process, the movement of template to be prevented during vibrated concrete, and forbid operating personnel arbitrarily to trample presstressed reinforcing steel, in order to avoid prestressing force position is departed from, guarantee the integrality of prestressed concrete.
8, maintenance
After construction of concrete face slab completes, carry out with the cover film of watering the possibility covering to reduce early stage shrinkage cracking.Need sprinkle water uniformly every day.Road surface is kept to be in dampness.Curing time is remove overburden after 2 week, can open to traffic.
9, form removal, stretch-draw prestressing force
Dismantle template after one day at concrete formation, carry out the stretch-draw of presstressed reinforcing steel afterwards, in order to ensure that concrete long slab does not shrink cracking before Shi Hanzhang, presstressed reinforcing steel is divided into twice stretch-draw.The order of stretch-draw is carried out successively from the one end on road surface to the other end.Adopt the symmetrical stretch-draw simultaneously of two jack, both sides can not simultaneous tension carry out side stretch-draw, every root presstressed reinforcing steel must be accomplished all in stretch-draw, the size of the power of first time stretch-draw is 30% of total stress, maintenance carried out secondary stretch-draw after 7 days, and second time stretch-draw can reach 70% of total stress.The size of the necessary strict Kong Shi stretching force of stretching process and afterburning speed, ensure that prestressing force is not pulled off.
The relevant regulations of the specification such as " construction of cement concrete road surface technical specification " (JTG F30-2003), " Highway Roadbed Construction Technology specification " (JTG F10-2006), " prestressed concrete pavement engineering legislation " (GB50422-2007) must be met in work progress.
After forming oblique prestressing force cement concrete layer 3, the coarse of oblique prestressing force cement concrete layer 3 surface change is made again by surperficial milling, in order to make to bond tightr with bitumen layer 1, and then be the tack coat 2 of 0.5 ~ 1cm in the surperficial spreading a layer thickness of oblique prestressing force cement concrete 3, tack coat 2 selects rubber asphalt synchronous surface dressing, adopt intelligent crushed stone sealing machine to carry out rubber asphalt sprinkling and the spreading that gathers materials, speed general control is within 1.5 ~ 2km/h.Rubber asphalt spreading amount controls at 1.7kg/m
2(domain of walker ± 0.1), pitch sprinkling temperature should at 180 ~ 190 DEG C, and gathering materials is the rubble of 4.75 ~ 9.5mm, the spreading amount 7kg/m gathered materials
2, the spreading temperature of gathering materials controls at about 130 DEG C.Thus can ensure that pitch sprinkling evenly and gravel mulch rate (70% ~ 80%), avoid pitch discharge rate too much or leak spill, crushed stone spreading is overlapping or reveal the phenomenons such as black, fundamentally ensures construction quality.
The bituminous concrete of making one deck 4 ~ 6cm on adhesive linkage 2 subsequently, paving of bituminous concrete must pave in strict accordance with the requirement of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).Then compaction moulding is carried out, final formation asphalt concrete layer 1, then now formed road structure is composite pavement of the present utility model, i.e. oblique prestressing force cement concrete-bituminous concrete composite pavement (CPC-AC:Cross-tensioned Prestressed Concrete-Asphalt Concrete).
Claims (4)
1. oblique prestressing force cement concrete-bituminous concrete composite pavement, it is characterized in that, comprise the oblique prestressing force cement concrete layer (3) be arranged in basic unit (4), oblique prestressing force cement concrete layer (3) is provided with asphalt concrete layer (1), between described oblique prestressing force cement concrete layer (3) and asphalt concrete layer (1), is provided with adhesive linkage (2).
2. oblique prestressing force cement concrete-bituminous concrete composite pavement according to claim 1, is characterized in that, the thickness of described oblique prestressing force cement concrete layer (3) is 22 ~ 26cm.
3. oblique prestressing force cement concrete-bituminous concrete composite pavement according to claim 1, is characterized in that, the thickness of described tack coat (2) is 0.5 ~ 1cm.
4. oblique prestressing force cement concrete-bituminous concrete composite pavement according to claim 1, is characterized in that, the thickness of described asphalt concrete layer (1) is 4 ~ 6cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321147.0U CN204662193U (en) | 2015-05-18 | 2015-05-18 | Oblique prestressing force cement concrete-bituminous concrete composite pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321147.0U CN204662193U (en) | 2015-05-18 | 2015-05-18 | Oblique prestressing force cement concrete-bituminous concrete composite pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204662193U true CN204662193U (en) | 2015-09-23 |
Family
ID=54132595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520321147.0U Expired - Fee Related CN204662193U (en) | 2015-05-18 | 2015-05-18 | Oblique prestressing force cement concrete-bituminous concrete composite pavement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204662193U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911974A (en) * | 2015-05-18 | 2015-09-16 | 长安大学 | Inclined prestress cement concrete-asphalt concrete composite pavement and construction method thereof |
| CN106587744A (en) * | 2016-12-22 | 2017-04-26 | 长安大学 | CPC-AC composite pavement fiber asphalt mixture and preparation method thereof |
| CN107358602A (en) * | 2017-07-12 | 2017-11-17 | 梁志华 | A kind of long-term kinetic stability evaluation system of highway subgrade bedding |
-
2015
- 2015-05-18 CN CN201520321147.0U patent/CN204662193U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911974A (en) * | 2015-05-18 | 2015-09-16 | 长安大学 | Inclined prestress cement concrete-asphalt concrete composite pavement and construction method thereof |
| CN106587744A (en) * | 2016-12-22 | 2017-04-26 | 长安大学 | CPC-AC composite pavement fiber asphalt mixture and preparation method thereof |
| CN106587744B (en) * | 2016-12-22 | 2018-12-18 | 长安大学 | A kind of CPC-AC composite pavement Fiber Asphalt Mixture and preparation method thereof |
| CN107358602A (en) * | 2017-07-12 | 2017-11-17 | 梁志华 | A kind of long-term kinetic stability evaluation system of highway subgrade bedding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104911974A (en) | Inclined prestress cement concrete-asphalt concrete composite pavement and construction method thereof | |
| CN105926406B (en) | A kind of joining method and structure on old road new in reorganization and expansion pavement construction | |
| CN104652217A (en) | Modified emulsified asphalt fiber synchronous pavement surface dressing construction method | |
| CN108797249A (en) | The construction method of soft soil roadbed high roadbed steep slope road section Foam lightweight soil | |
| CN103882788B (en) | Based on the method for constructing roadway of the modification roller compacted concrete surface layer of enzyme soil cured substrate layer | |
| CN105803922B (en) | A kind of high embankment filled soil end of the bridge anti-settling structure | |
| CN106120524A (en) | A kind of road construction method | |
| CN206512547U (en) | A kind of repairing type bituminous paving | |
| CN104005313A (en) | Construction method for asphalt concrete pavement separation zone kerbs | |
| CN204662193U (en) | Oblique prestressing force cement concrete-bituminous concrete composite pavement | |
| CN102051848B (en) | HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and constructing method thereof | |
| CN104532716A (en) | Assembly asphalt pavement for desert highway and construction method of assembly asphalt pavement | |
| KR100961967B1 (en) | Structure of loess paving layer and construction method using thereof | |
| CN108193572A (en) | A kind of method recycled to precast beam precasting yard hardened layer | |
| CN107558324B (en) | A kind of Steel Fibre Concrete Pavement and its construction technology of tramcar and road usual friendship mouth | |
| CN103334365B (en) | The paving structure of a kind of fast quick-recovery road surface and bridge floor function and paving method | |
| CN209443368U (en) | The overhead anti-ponding structure in bridge floor edge | |
| CN207944293U (en) | A kind of traffic lights grade crossing road surface | |
| CN215668820U (en) | New and old bituminous paving meets structure | |
| CN113089410A (en) | Asphalt pavement structure for permanent structure conversion of highway precast beam field pavement | |
| CN204849511U (en) | Handle road surface overhaul structure that different lane road surfaces road conditions differed greatly | |
| JPH02157304A (en) | Construction for pavement of bed in play-ground | |
| CN112523028A (en) | Waterproof edge sealing construction method for joint of pit and groove of asphalt pavement | |
| CN109868699A (en) | Road noise reduction antiskid process of surface treatment | |
| CN212128892U (en) | Pavement structure for replacing bridge deck pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160518 |