CN204475099U - A kind of assembly concrete traffic - Google Patents
A kind of assembly concrete traffic Download PDFInfo
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- CN204475099U CN204475099U CN201520143102.9U CN201520143102U CN204475099U CN 204475099 U CN204475099 U CN 204475099U CN 201520143102 U CN201520143102 U CN 201520143102U CN 204475099 U CN204475099 U CN 204475099U
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- 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
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The utility model discloses a kind of assembly concrete traffic, be spliced by road-surface prefabs, described road-surface prefabs comprises the wearing layer on upper strata and the force structure layer of lower floor, described wearing layer is fixedly connected with force structure layer, gap is left in the stitching portion of the road-surface prefabs of mutual splicing, and forms gap stress layer at gap concreting.Road-surface prefabs portable construction of the present utility model, intensity is high, and anti-wear performance is good, integral prefabricated, is assembled into traffic, short construction period, does not limit by weather and season.
Description
Technical field
The utility model belongs to traffic route construction field, particularly relates to a kind of assembly concrete traffic.
Background technology
The recent acceleration along with urbanization process and country improve People's livelihood energetically, and new traffic construction project and old pavement finishing capacity expansion project start one after another.Ordinary concrete is as main construction material fast, generally be applied in traffic construction, but adopt concrete to build road in cast-in-place mode, it is easily subject to the impact of synoptic climate and temperature, humidity etc., occur that site operation quality control is unstable, cast-in-place volume is large, easily the phenomenons such as cracking and the bad cracking of maintenance that heat up occurs, service life of road surface is reduced, occurs the phenomenons such as road surface fracture, local subsidence.And after concreting curing period long, long construction period, be not easy to being open to traffic fast of road.Old pavement breakage is simultaneously overhauled and is needed dig on a wide area can produce a large amount of constructional materials rubbish, easy pollution surrounding enviroment, the garrison of heavy-duty machinery adds the periodic maintenance after reparation, causes the blocking that traffic is serious, brings great inconvenience to the productive life of people.Therefore be necessary that building traffic route to this cast-in-place mode improves.
Application number be 201120482256.2 Chinese patent disclose a kind of road-surface prefabs be made up of bituminous concrete, in this utility model, road-surface prefabs is the rectangular structure of long 6m ~ 10m, wide 3m ~ 5m, thick 12cm ~ 20cm, the upper surface of road-surface prefabs is arc convex or plane, the ground of road-surface prefabs is plane, the ground of road-surface prefabs is provided with multiple shrinkage pool as required, and this shrinkage pool is used for being connected and fixed bar.Although prepare road by road-surface prefabs in this utility model can save human and material resources and financial resources, but prefabricated component is just simple to be laid, when bearing larger weight, easily gap is there is between prefabricated component, thus cause the displacement of prefabricated component, and also easily there is the scene of local fracture in the prefabricated component of individual layer.
Application number be 02222846.2 Chinese patent disclose a kind of Combined road-surface prefabs, comprise substrate, it is pedestal below substrate, the rubber tile of acid and alkali-resistance full of elasticity is provided with between substrate and pedestal, the horizontal edge splicing of adjacent two pieces of substrates, the longitudinal edge of its both sides is fixed by connector, pedestal becomes " recessed " font, rubber tile, substrate is put in groove in the inner successively, the top of substrate flushes substantially with the top of pedestal, pedestal is provided with the preformed groove settling connector at the position at connector place, the rubber lattice plate of inner band hole is provided with between every two block concrete substrate horizontal edges.Although this utility model reaches the object that assembling is simple, shorten the construction period, but substrate will be arranged on pedestal, and pedestal volume ratio substrate is much bigger, make concrete consumption huge, and, be connected by connector between substrate with substrate, connector adopts screw rod, substrate and nut, and long-term being subject to easily causes junction to be ruptured when car load.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of assembly concrete traffic, the utility model portable construction, intensity is high, excellent in durability, abrasion resistance is high, and road surface adopts assembling process to realize, can conveniently dismounting and maintenance.
In order to solve the problems of the technologies described above, the utility model adopts following scheme to realize:
A kind of assembly concrete traffic, be spliced by road-surface prefabs, described road-surface prefabs comprises the wearing layer on upper strata and the force structure layer of lower floor, described wearing layer is fixedly connected with force structure layer, the road-surface prefabs of mutual splicing leaves gap in stitching portion, and forms gap stress layer at gap concreting.
The features such as wearing layer is prepared from by ECC ductility ultra-high performance concrete, changes in the past that ordinary concrete elastic deformation is little, not endurance, shock resistance difference, make the wearing layer prepared have fine shock resistance antidetonation and anti-wear performance, greatly increase the service life.But, only wearing layer laying road is used can not to meet day by day complicated road conditions very well, special in the road surface often having heavy goods vehicles to travel, more easily there is transverse breakage in road surface, use prefabricated component that very-high performance powder concrete is built as force structure layer, can strengthen in vertical direction be subject to force intensity, be combined into prefabricated component by the two-layer deck for different-effect, superior shock resistance and anti-wear performance can be reached, also can improve its intensity and cracking resistance.
Traditional splicing traffic route, its prefabricated component is all simply be stitched together, after a period of time, experienced by the traveling of rain drop erosion and a large amount of vehicle, easily there is gap in stitching portion, then occur that skew or sedimentation occur prefabricated component relative position, serious affects traffic route safety.Leave gap in the stitching portion of the road-surface prefabs of splicing mutually and form gap stress layer at gap concreting, the road-surface prefabs of splicing mutually can be fastenedly connected, in heavy goods vehicles driving process, be less likely to occur relative displacement and sedimentation between road-surface prefabs, ensure that road use for a long time after planeness.
Described wearing layer is built by modification ECC ductility ultra-high performance concrete and is formed, and described modification ECC ductility ultra-high performance concrete comprises each material component of following weight portion:
Intensity is not less than 42.5 grade silicon acid salt cements or Portland cement 600 ~ 900 parts;
The silicon ash of SiO2 content >=85% 20 ~ 45 parts;
350 ~ 600 parts, II grade of flyash;
Aggregate is not more than 2.5 millimeters of continuous grading river sands 450 ~ 750 parts;
High strength and high flexibility modules polyethylene alcohol volume is 13 ~ 26 parts;
Modification regeneration rubber powder 10 ~ 20 parts;
High efficiency water reducing agent 18 ~ 24 parts;
250 ~ 300 parts, water.
Eliminate quartz sand in formula, reduce the use amount of quartz sand and cement, adopting silicon ash and flyash to replacing part of cement, greatly reducing cost, enhancing concrete cohesiveness, polyvinyl alcohol mix the intensity that improve cement-based material; Rubber powder can improve the shortcomings such as Brittleness of Concrete is large, sex change ability is little.
Described force structure layer and gap stress layer are built by very-high performance powder concrete and are formed, and described very-high performance powder concrete comprises each material component of following weight portion:
Intensity is not less than 42.5 grade silicon acid salt cements or Portland cement 450 ~ 600 parts;
Within 7 days, activity index is not less than 115 mineral active admixture 260 ~ 360 parts;
Mineral inert mineral admixture 45 ~ 60 parts;
Particle diameter is less than the continuous grading river sand 1300 ~ 1850 parts of 4.75mm;
High efficiency water reducing agent 35 ~ 48 parts;
Diameter 0.10mm ~ 0.16mm tensile strength is greater than 2000 MPa steel fibre 60 ~ 120 parts, and diameter 0.18mm ~ 0.22mm tensile strength is greater than 2000 MPa steel fibre 80 ~ 160 parts, and diameter 0.25mm ~ 0.3mm tensile strength is greater than 2000 MPa steel fibre 30 ~ 80 parts;
175 ~ 250 parts, water.
Use wearing layer prepared by modification ECC ductility ultra-high performance concrete, its compressive strength is not less than 70 MPas, and tensile strength is not less than 11 MPas, and flexural deformation is not less than 2.5%, and Frozen-thawed cycled is not less than 500 times, is imperviously not less than P30; Use force structure layer prepared by very-high performance powder concrete, its compressive strength is not less than 150 MPas, and tensile strength is not less than 25 MPas, is imperviously not less than P30, and Frozen-thawed cycled is not less than 500 times.
Stress layer surface, described gap is provided with shrinkage joint.
Expansion joint setting is on the stress layer of gap, its width is 10 ~ 15mm, can prevent the road-surface prefabs of mutually splicing from occurring crack owing to expanding with heat and contract with cold, especially for road surface for a long time under traffic load repeated action, the design at shrinkage joint can promote Road Service Life and increase travel safety.
The end surface of the road-surface prefabs of described mutual splicing concaves, make shaping after the narrow centre, cross section two ends of gap stress layer wide.。
The end surface of the road-surface prefabs of mutual splicing concaves, the narrow centre, cross section two ends forming gap stress layer after concreting is wide, gap stress layer is mutually chimeric with the end of road-surface prefabs, form the structure of a mutual screens, prevent from relative displacement appears in vertical direction, make to connect effect more tight, prevent crackle, further ensure the planeness of road.
The surface that described force structure layer contacts with wearing layer is provided with projection, and described wearing layer is then provided with the shrinkage pool corresponding with projection, and the quantity of described projection is no less than 2.
Protruding and shrinkage pool cooperatively interacts, force structure layer and wearing layer is made to be combined with each other tightr, first wearing layer is built when building, force structure layer is built again on wearing layer basis, wearing layer and force structure layer is made to bond tightr, instead of be fixed together two-layer by fastening devices, avoid and occur gap and fixing unstable situation.
Described force structure layer is built-in with reinforced mesh, and described reinforced mesh protrudes from the road-surface prefabs end of splicing mutually, and interlaced at the reinforced mesh of stitching portion and another road-surface prefabs.
Force structure layer is mainly used in the compressive strength strengthening road-surface prefabs, and make road surface be unlikely to occur crackle and depression, built-in reinforced mesh improves the mechanical property of road-surface prefabs further, and reinforced mesh protective layer thickness is not less than 10mm.Reinforced mesh protrudes from end that road-surface prefabs splices mutually and interlaced, when gap concreting forms gap stress layer, outstanding part reinforced mesh and gap stress layer mutually merge and form powerful mechanical snap effect, make adjacent two block road prefabricated components splice tightr.
The road bed sideways pitch of road surface pavement prefabricated component is 0.5 ~ 2%.The gradient arranged just with while draining can not affect the safety of driving.
Described wearing layer thickness is not less than 20mm, and structure stress layer thickness is not less than 50mm.
Described road-surface prefabs thickness is 70 ~ 150mm, thickness difference can be used for the traffic route that various difference requires, wherein wearing layer thickness is not less than 20mm, structure stress layer thickness is not less than 50mm, save concrete amount, prefabricated component being directly lifted into road bed carries out assembled, easy construction, not by weather and the impact in season.
A kind of assembly concrete traffic construction method, comprises the steps:
S1: grading and keep 0.5 ~ 2% gradient;
S2: adopt lifting device by previously prepared road-surface prefabs lifting and be transported to scene;
S3: carry out prefabricated component road surfacing according to drain slope and plate face mounting design, and keep drain slope overall consistent;
S4: in the gap after road pavement prefabricated component is assembled, reinforcing bar carries out overlap joint colligation, concreting forms gap stress layer, the shrinkage joint that stress layer reserved 10 ~ 15mm in gap is wide, rear enclosed maintenance 2 days;
S5: filling position outside mounted road-surface prefabs is tamped, is delivered for use.
Time prepared by prefabricated component, be no less than 3 lifting bolts, the prefabricated component lifting in constructability process according to center of gravity ratio is pre-buried; Construction method makes follow-up maintenance realize modularly changing, and decreases the form of building road construction wet work, realizes road environmental protection, rapid feature.
The preparation method of described road-surface prefabs is as follows:
S11: prepared by mould: after set of molds being installed, places and has welded pre-embedded bolt and interface anchor and position pipe cage of reinforcement and had good positioning, add locator card, reinforced mesh topping of having good positioning;
S12: concreting: strike off after the height of arranging in the tool that first poured into the mold by the wearing layer cement be stirred, again build the force structure layer cement be stirred, surface strikes off receipts light;
S13: maintenance: after covering curing cover, direct medium-frequency heating system carries out maintenance, after being warming up to 80 ~ 90 DEG C, constant temperature 24h can carry out form removal.
Compared with prior art, the utility model has following beneficial effect:
(1) the utility model portable construction, intensity is high, excellent in durability, abrasion resistance is high, integral prefabricated, quality standardization controls, and is convenient to transport, integral prefabricated material has higher tensile strength and toughness, can overcome the pavement destruction that road bed sedimentation causes, road surface own adopts assembling process to realize, can conveniently dismounting and maintenance;
(2) easy construction, not by affecting in weather and season etc., significantly shorten construction period, reduce traffic concrete pavement construction brings environment pollution and traffic jam impact, service life of road surface can be improved by the utility model, lower follow-up maintenance, reduce building waste, realize the sustainable development to environment.
Accompanying drawing explanation
Fig. 1 is road-surface prefabs structural representation;
Fig. 2 is road-surface prefabs top view;
Fig. 3 is A-A sectional view in Fig. 2;
Fig. 4 is B-B sectional view in Fig. 2;
Fig. 5 is stitching portion enlarged drawing;
Wherein 1, roadbed; 2, force structure layer; 21, circular protrusions; 22, reinforced mesh; 3, wearing layer; 31, bolt is lifted; 4, gap stress layer; 41, shrinkage joint.
Detailed description of the invention
In order to allow those skilled in the art understand the technical solution of the utility model better, below in conjunction with accompanying drawing, the utility model is further elaborated.
Embodiment 1
As shown in Figure 1, a kind of assembly concrete traffic, be spliced by road-surface prefabs, described road-surface prefabs comprises the wearing layer 3 on upper strata and the force structure layer 2 of lower floor, described wearing layer 3 is fixedly connected with force structure layer 2, and gap is left in the stitching portion of the road-surface prefabs of splicing mutually, and forms gap stress layer 4 at gap concreting, described wearing layer 3 thickness is 20mm, and described structure stress layer thickness is 80mm.
Described wearing layer is built by modification ECC ductility ultra-high performance concrete and is formed, and described modification ECC ductility ultra-high performance concrete comprises each material component of following weight portion:
Intensity is not less than 42.5 grade silicon acid salt cements or Portland cement 750 parts;
The silicon ash 32 parts of SiO2 content >=85%;
475 parts, II grade of flyash;
Aggregate is not more than 2.5 millimeters of continuous grading river sands 600 parts;
High strength and high flexibility modules polyethylene alcohol volume is 20 parts;
Modification regeneration rubber powder 15 parts;
High efficiency water reducing agent 21 parts;
280 parts, water;
Described force structure layer and gap stress layer are built by very-high performance powder concrete and are formed, and described very-high performance powder concrete comprises each material component of following weight portion:
Intensity is not less than 42.5 grade silicon acid salt cements or Portland cement 525 parts;
Within 7 days, activity index is not less than 115 mineral active admixture 310 parts;
Mineral inert mineral admixture 50 parts;
Particle diameter is less than the continuous grading river sand 1300 parts of 4.75mm;
High efficiency water reducing agent 42 parts;
Diameter 0.10mm ~ 0.16mm tensile strength is greater than 2000 MPa steel fibre 90 parts, and diameter 0.18mm ~ 0.22mm tensile strength is greater than 2000 MPa steel fibre 120 parts, and diameter 0.25mm ~ 0.3mm tensile strength is greater than 2000 MPa steel fibre 55 parts;
210 parts, water.
As shown in Figure 5, the end surface of the road-surface prefabs of described mutual splicing concaves, make shaping after the narrow centre, cross section two ends of gap stress layer 4 wide, the surface of gap stress layer 4 is provided with shrinkage joint 41.
As shown in Fig. 1,3 and 4, the surface that described force structure layer 2 contacts with wearing layer 3 is provided with circular protrusions 21, described wearing layer 3 is provided with the shrinkage pool corresponding with force structure layer 2 circular protrusions 21, the quantity of described circular protrusions 21 is 4, as shown in Figure 2, described wearing layer 3 surface is provided with 4 lifting bolts 31.
As shown in Figure 1, described force structure layer 2 is built-in with two-layer reinforced mesh 22, and described reinforced mesh 22 protrudes from the end that road-surface prefabs splices mutually, and interlaced at the reinforced mesh of stitching portion and another road-surface prefabs.
The surperficial sideways pitch of roadbed 1 of road surface pavement prefabricated component is 1%.
A construction method for assembly concrete traffic, comprises the steps:
S1: roadbed 1 smooth and keep 1% gradient;
S2: adopt lifting device by previously prepared road-surface prefabs lifting and be transported to scene;
S3: carry out prefabricated component road surfacing according to drain slope and plate face mounting design, and keep drain slope overall consistent;
S4: in the gap after road pavement prefabricated component is assembled, reinforcing bar carries out overlap joint colligation, concreting forms gap stress layer 4, and gap stress layer reserves the wide shrinkage joint of 10mm, rear enclosed maintenance 2 days;
S5: filling position outside mounted road-surface prefabs is tamped, is delivered for use.
The preparation method of described road-surface prefabs is as follows:
S11: prepared by mould: after set of molds being installed, places and has welded pre-embedded bolt and interface anchor and position pipe cage of reinforcement and had good positioning, add locator card, reinforced mesh topping of having good positioning;
S12: concreting: strike off after the height of arranging in the tool that first poured into the mold by the wearing layer cement be stirred, again build the force structure layer cement be stirred, surface strikes off receipts light;
S13: maintenance: after covering curing cover, direct medium-frequency heating system carries out maintenance, after being warming up to 90 DEG C, constant temperature 24h can carry out form removal.
Above-described embodiment is only wherein specific implementation of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (7)
1. an assembly concrete traffic, be spliced by road-surface prefabs, it is characterized in that, described road-surface prefabs comprises the wearing layer on upper strata and the force structure layer of lower floor, described wearing layer is fixedly connected with force structure layer, the road-surface prefabs of mutual splicing leaves gap in stitching portion, and forms gap stress layer at gap concreting.
2. a kind of assembly concrete traffic according to claim 1, is characterized in that, stress layer surface, described gap is provided with shrinkage joint.
3. a kind of assembly concrete traffic according to claim 1, is characterized in that, the end surface of the road-surface prefabs of described mutual splicing concaves, make shaping after the narrow centre, cross section two ends of gap stress layer wide.
4. a kind of assembly concrete traffic according to claim 1, it is characterized in that, the surface that described force structure layer contacts with wearing layer is provided with projection, and described wearing layer is then provided with the shrinkage pool corresponding with projection, and the quantity of described projection is no less than 2.
5. a kind of assembly concrete traffic according to claim 1, it is characterized in that, described force structure layer is built-in with reinforced mesh, and described reinforced mesh protrudes from the road-surface prefabs end of splicing mutually, and interlaced at the reinforced mesh of stitching portion and another road-surface prefabs.
6. a kind of assembly concrete traffic according to claim 1, is characterized in that, the road bed sideways pitch of road surface pavement prefabricated component is 0.5 ~ 2%.
7. a kind of assembly concrete traffic according to claim 1, is characterized in that, described wearing layer thickness is not less than 20mm, and structure stress layer thickness is not less than 50mm.
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| CN201520143102.9U CN204475099U (en) | 2015-03-13 | 2015-03-13 | A kind of assembly concrete traffic |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652210A (en) * | 2015-03-13 | 2015-05-27 | 黄贺明 | Assembled concrete traffic pavement and construction method thereof |
| CN105463965A (en) * | 2015-12-31 | 2016-04-06 | 江西贝融循环材料股份有限公司 | Long-life water permeable plate easy to recover and keep water permeability |
| CN107083730A (en) * | 2017-05-31 | 2017-08-22 | 南昌大学 | A kind of prefabricated PC construction refuse regenerated aggregate road and its construction method |
| RU2777627C1 (en) * | 2021-12-28 | 2022-08-08 | Николай Николаевич Кириллов | Method for constructing a pavement based on reinforced concrete blocks with prismatic elements on the lower surfaces |
-
2015
- 2015-03-13 CN CN201520143102.9U patent/CN204475099U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652210A (en) * | 2015-03-13 | 2015-05-27 | 黄贺明 | Assembled concrete traffic pavement and construction method thereof |
| CN105463965A (en) * | 2015-12-31 | 2016-04-06 | 江西贝融循环材料股份有限公司 | Long-life water permeable plate easy to recover and keep water permeability |
| CN107083730A (en) * | 2017-05-31 | 2017-08-22 | 南昌大学 | A kind of prefabricated PC construction refuse regenerated aggregate road and its construction method |
| RU2777627C1 (en) * | 2021-12-28 | 2022-08-08 | Николай Николаевич Кириллов | Method for constructing a pavement based on reinforced concrete blocks with prismatic elements on the lower surfaces |
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