CN115262379B - Prefabricated cement concrete bridge deck asphalt pavement structure and assembly process thereof - Google Patents
Prefabricated cement concrete bridge deck asphalt pavement structure and assembly process thereof Download PDFInfo
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- CN115262379B CN115262379B CN202211007288.6A CN202211007288A CN115262379B CN 115262379 B CN115262379 B CN 115262379B CN 202211007288 A CN202211007288 A CN 202211007288A CN 115262379 B CN115262379 B CN 115262379B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 165
- 239000004568 cement Substances 0.000 title claims abstract description 29
- 239000004567 concrete Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 56
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 18
- 238000005299 abrasion Methods 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 111
- 239000011707 mineral Substances 0.000 claims description 111
- 239000010410 layer Substances 0.000 claims description 80
- 239000004593 Epoxy Substances 0.000 claims description 74
- 239000000203 mixture Substances 0.000 claims description 37
- 239000011230 binding agent Substances 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 13
- 235000019738 Limestone Nutrition 0.000 claims description 11
- 239000006028 limestone Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 150000001412 amines Chemical class 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000013521 mastic Substances 0.000 claims description 9
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 2
- 238000009417 prefabrication Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
-
- 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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
-
- 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
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a prefabricated cement concrete bridge deck asphalt pavement structure and an assembly process thereof, wherein a self-leveling asphalt mortar pavement material is prepared, and is paved on a prefabricated bridge segment in a factory to realize common prefabrication of the pavement structure and the bridge segment, then prefabricated members of a 'beam body combined pavement' manufactured in the factory are transported to an engineering site and hoisted and spliced, and finally an upper asphalt concrete abrasion layer is paved on the site to finish the pavement construction of the beam body and the bridge deck; the invention effectively reduces the influence of the construction environment on the paving quality, reduces the construction cost, greatly shortens the construction period, and is particularly suitable for severe bridge deck paving construction environment areas such as Qinghai-Tibet areas and the like and the rapid construction requirement of some urban overhead bridges.
Description
Technical Field
The invention relates to a prefabricated cement concrete bridge deck asphalt pavement structure and an assembly process thereof, which are particularly suitable for the requirements of rapid construction of bridge deck pavement construction environments in areas with severe environments such as Qinghai-Tibet areas and some urban overhead bridges, and belong to the technical field of road engineering.
Background
As a structure for providing a traffic service function for a bridge, bridge deck pavement is usually completed by site construction. The site construction is interfered by the factors of the climate environment, human factors and the like, the quality control and the construction period are difficult to ensure, and the phenomenon that the service performance of the same paving structure in the same kind of bridge is extremely different is caused. Particularly, for some areas with severe climatic environments, such as Qinghai-Tibet areas, which are subjected to high-cold anoxic environments, the effective construction period is very short, and the severe test is brought to site construction. The development of the bridge deck pavement assembly construction technology can realize rapid high-quality pavement construction, break through the limitation of severe construction environmental conditions, and realize green, less man-made, high-efficiency and high-quality asphalt pavement through standardized production in a prefabricated factory environment.
The bridge deck pavement is of a thin layer structure (the thickness is less than 10 cm), if the bridge deck pavement prefabricated member is manufactured independently, deformation is easy to occur in the carrying process, and the asphalt bridge deck pavement prefabricated member is assembled with the bridge beam Duan Nanyi. The feasible scheme of bridge deck pavement assembly implementation is that asphalt is paved on precast bridge sections in a factory, so that the common prefabrication of bridge deck pavement and bridge beam sections is realized, and a bridge deck system product is formed and used for on-site hoisting and splicing bridge construction. However, the existing cement concrete bridge deck asphalt pavement materials mainly comprise rolling type asphalt mixtures, and the working conditions of large rolling machines cannot be met by the precast bridge beam Duan Zuoye surfaces of factories. The above reasons lead to slow development of deck asphalt assembly technology, and no engineering application exists in China. The key point of pushing the assembled bridge deck asphalt pavement application is material and process upgrading, and a complete and feasible prefabrication and assembly complete process is established on the basis of adopting the high-performance self-leveling asphalt pavement material which has both service performance and factory assembly process requirements.
Disclosure of Invention
The invention provides a prefabricated cement concrete bridge deck asphalt pavement structure and an assembly process thereof, which effectively reduce the influence of a construction environment on pavement quality, reduce construction cost, greatly shorten construction period, and are particularly suitable for rapid construction requirements of bridge pavement construction environments in Qinghai-Tibet areas and other areas with severe bridge deck pavement construction environments and some cities.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a but precast cement concrete bridge floor asphalt pavement structure which characterized in that: the prefabricated member comprises a bridge Duan Jiege asphalt pavement prefabricated section, wherein a lower bonding layer is paved on the surface of the bridge prefabricated section, and an asphalt mortar pavement layer is paved on the surface of the lower bonding layer;
when adjacent prefabricated members are spliced, seamless expansion joint materials are filled between adjacent asphalt mortar pavement layers to form a whole;
paving an upper bonding layer on the surface of the asphalt mortar pavement layer, and paving an asphalt concrete abrasion layer on the surface of the upper bonding layer;
As a further preferred aspect of the invention, the components of the upper bonding layer and the lower bonding layer are the same, and the bonding agents comprise epoxy resin and curing agent, wherein the curing agent contains asphalt, and the mass ratio of the epoxy resin to the curing agent is 10:29-10:55;
as a further preferable mode of the invention, the asphalt mortar pavement layer adopts epoxy mortar pavement, the epoxy mortar comprises epoxy asphalt binder and mixed mineral aggregate, and the mass ratio of the epoxy asphalt binder to the mixed mineral aggregate is 0.95:10-1.1:10;
The mixed mineral aggregate comprises a mixture of basalt aggregate and limestone mineral powder;
As a further preferred aspect of the present invention, the mixed mineral aggregate includes a mixture of a plurality of gear steps, which are respectively a first gear mineral aggregate, a second gear mineral aggregate, a third gear mineral aggregate, a fourth gear mineral aggregate, a fifth gear mineral aggregate and a sixth gear mineral aggregate, and the mass ratio of each gear step mixture is the first gear: second gear: third gear: fourth gear: fifth gear: sixth gear = 28.3:13.2:15.8:15:9.5:18.2;
wherein the first grade mineral aggregate is mineral aggregate with the grain size ranging from 1.18mm to 2.36mm, the second grade mineral aggregate is mineral aggregate with the grain size ranging from 0.6mm to 1.18mm, the third grade mineral aggregate is mineral aggregate with the grain size ranging from 0.3mm to 0.6mm, the fourth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.15mm to 0.3mm, the fifth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.075mm to 0.15mm, and the sixth grade mineral aggregate is mineral aggregate with the grain size less than 0.075 mm;
As a further preferred aspect of the present invention, the epoxy asphalt binder comprises bisphenol a epoxy resin, a modified fatty amine curing agent, a phenolic compatibilizer, and No. 70 matrix asphalt, and the mass ratio of the bisphenol a epoxy resin, the modified fatty amine curing agent, the phenolic compatibilizer, and the No. 70 matrix asphalt is 1:0.8:0.2:3;
As a further preferred aspect of the invention, the asphalt concrete wearing layer is paved by adopting an asphalt mastic macadam mixture SMA-13, wherein the asphalt mastic macadam mixture SMA-13 comprises modified asphalt and a mixed mineral aggregate, and the mixed mineral aggregate comprises a mixture of basalt aggregate and limestone mineral powder;
Wherein, the mixed mineral aggregate adopts SMA-13 mixed material grading;
The oil-stone ratio of the modified asphalt to the mixed mineral aggregate is 5.8% -6.3%;
as a further preferred aspect of the invention, the seamless expansion joint material comprises an epoxy asphalt and a mixed mineral aggregate, wherein the mass ratio of the epoxy asphalt to the mixed mineral aggregate is 20:100-30:100;
the epoxy asphalt consists of an A component and a B component, wherein the A component is E-51 type epoxy resin, the B component comprises matrix asphalt and a curing agent, and the mass ratio of the A component to the B component is 1:3.6-1:7.6;
The mixed mineral aggregate comprises basalt aggregate and limestone mineral powder, the particle size of the mixed mineral aggregate comprises three grades, namely 5-10mm, 10-15mm and 15-20mm, and the mass ratio of the three grades is 0.3:0.35:0.35;
As a further preferred aspect of the present invention, the preparation process of the epoxy mortar comprises the steps of:
Step S301: heating the No. 70 matrix asphalt to 120 ℃, adding a phenolic compatilizer, fully stirring until the mixture is uniformly mixed, cooling the mixed solution to 40-80 ℃, then adding bisphenol A epoxy resin, and uniformly stirring to obtain an epoxy asphalt B component for later use;
Step S302: mixing the epoxy asphalt B component with the modified fatty amine curing agent under normal temperature, and uniformly stirring to prepare an epoxy asphalt binder;
step S303: after the mixed mineral aggregate is dried, adding the epoxy asphalt binder prepared in the step S302, and uniformly mixing to prepare epoxy mortar;
The assembling process of the prefabricated cement concrete bridge deck asphalt pavement structure comprises the following steps of:
step S1: fixing the prefabricated sections of the bridge body in a factory, uniformly distributing adhesive on the cement concrete bridge deck, and forming a lower adhesive layer of 80-100 mu m on the cement concrete bridge deck;
Step S2: paving epoxy mortar within one day after the completion of the lower bonding layer, forming an asphalt mortar paving layer with the thickness of 1.5-2cm on the surface of the lower bonding layer, and adopting an industrial trowelling robot and a small road roller to perform detail construction optimization so as to manufacture a prefabricated member for asphalt pavement of the bridge beam Duan Jiege;
Step S3: naturally curing prefabricated members paved by asphalt of bridge beam Duan Jiege in a factory for at least 30 days, after the epoxy mortar is fully cured, transporting a plurality of prefabricated members to an engineering site, hoisting and splicing to form a whole, cleaning and flattening the splicing interface of an asphalt mortar paving layer, uniformly coating domestic epoxy asphalt binder, filling an interface splicing gap by adopting a seamless expansion joint material, and mechanically rolling by adopting a small-sized compactor to form a seamless expansion joint;
step S4: uniformly spreading a binder on the surface of the asphalt mortar pavement layer, and forming an upper bonding layer of 80-100 mu m on the surface of the asphalt mortar pavement layer;
Step S5: paving asphalt mastic broken stone mixture SMA-13 with the thickness of 3.5-4.5cm in one day after the bonding layer is finished, and completing the construction of an asphalt concrete wearing layer;
As a further preferred aspect of the present invention, the binder in step S1 is prepared by thoroughly mixing the epoxy resin and the curing agent at 110 to 130 ℃.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. The invention adopts the form of bridge beam section and asphalt pavement prefabricated member, avoids being interfered by environment through factory standardized construction, reduces the construction procedures of asphalt pavement sites, greatly shortens the construction period and improves the construction efficiency;
2. According to the assembly process provided by the invention, on the premise of 'bridge girder section + asphalt pavement' prefabricated member, the high-performance self-leveling asphalt mortar material is adopted, so that the service performance of the bridge deck pavement structure is ensured.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a preferred embodiment provided by the present invention.
In the figure: the bridge beam body prefabricated section is 1,2 is a lower bonding layer, 3 is an asphalt mortar pavement layer, 4 is an upper bonding layer, and 5 is an asphalt concrete abrasion layer.
Detailed Description
The application will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present application. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present application.
As explained in the background art, the existing bridge deck asphalt pavement construction method mainly comprises site construction, is long in construction period, high in labor cost and high in overall energy consumption, is easily influenced by site construction environment and construction level, is extremely easy to generate construction defects under the condition of complex and changeable construction environment, and particularly seriously influences site construction quality in some areas with severe climatic environments (such as Tibet areas).
Specifically, as shown in fig. 1, the paving structure finally formed by the application comprises a prefabricated member for asphalt pavement of a bridge beam Duan Jiege, wherein the prefabricated member comprises a bridge beam body prefabricated section 1, a lower bonding layer 2 is paved on the surface of the bridge beam body prefabricated section, and an asphalt mortar pavement layer 3 is paved on the surface of the lower bonding layer; when adjacent prefabricated members are spliced, seamless expansion joint materials are filled between adjacent asphalt mortar pavement layers to form a whole; then, an upper bonding layer 4 is paved on the surface of the asphalt mortar pavement layer, and an asphalt concrete abrasion layer 5 is paved on the surface of the upper bonding layer, so that the pavement of the whole structure is finally formed. That is, the prefabricated section of the bridge beam body, the lower bonding layer and the asphalt mortar pavement layer form a prefabricated member of the beam body and pavement, standardized production can be carried out in factory environment, and the green, less man-made and high efficiency of asphalt pavement are realized.
In the application, the components of each layer are restrained, firstly, the components of the upper bonding layer and the lower bonding layer are the same, and the components are all warm-mix domestic epoxy asphalt binder, wherein the binder comprises epoxy resin and curing agent, the curing agent contains asphalt, and the mass ratio of the epoxy resin to the curing agent is 10:29-10:55. When the actual engineering is paved, the adhesive is fully mixed at 110-130 ℃ and uniformly sprayed on the cement concrete bridge deck of the prefabricated section of the bridge body to form a lower adhesive layer, and after the prefabricated member of the bridge beam section and asphalt pavement is assembled on site, the adhesive is sprayed on site to form an upper adhesive layer, wherein the thickness of the upper adhesive layer and the lower adhesive layer is 80-100 mu m.
In the figure 1, the asphalt mortar pavement layer positioned on the third layer from bottom to top is paved by using epoxy mortar, wherein the epoxy mortar is self-leveling epoxy mortar and comprises epoxy asphalt binder and mixed mineral aggregate, and the mass ratio of the epoxy asphalt binder to the mixed mineral aggregate is in the range of 0.95:10-1.1:10; the arrangement of the components can give consideration to the service performance and the factory assembly process requirement, so that the prefabricated member is used as a part of the prefabricated member, the construction efficiency is improved through prefabrication, and the prefabricated member is not easy to deform.
The mixed mineral aggregate comprises a mixture of basalt aggregate and limestone mineral powder. The mixed mineral aggregate comprises a mixture of a plurality of gears, wherein the mixture is respectively a first-gear mineral aggregate, a second-gear mineral aggregate, a third-gear mineral aggregate, a fourth-gear mineral aggregate, a fifth-gear mineral aggregate and a sixth-gear mineral aggregate, and the mass ratio of the mixture of each gear is the first gear: second gear: third gear: fourth gear: fifth gear: sixth gear = 28.3:13.2:15.8:15:9.5:18.2; wherein the first grade mineral aggregate is mineral aggregate with the grain size ranging from 1.18mm to 2.36mm, the second grade mineral aggregate is mineral aggregate with the grain size ranging from 0.6mm to 1.18mm, the third grade mineral aggregate is mineral aggregate with the grain size ranging from 0.3mm to 0.6mm, the fourth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.15mm to 0.3mm, the fifth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.075mm to 0.15mm, and the sixth grade mineral aggregate is mineral aggregate with the grain size less than 0.075 mm.
The epoxy asphalt binder comprises bisphenol A type epoxy resin, modified fatty amine curing agent, phenolic compatilizer and 70 # matrix asphalt, wherein the mass ratio of the bisphenol A type epoxy resin to the modified fatty amine curing agent to the phenolic compatilizer to the 70 # matrix asphalt is 1:0.8:0.2:3.
The preparation process of the epoxy asphalt binder is also provided, and specifically comprises the following steps:
Step S301: heating the No. 70 matrix asphalt to 120 ℃, adding a phenolic compatilizer, fully stirring until the mixture is uniformly mixed, cooling the mixed solution to 40-80 ℃, then adding bisphenol A epoxy resin, and uniformly stirring to obtain an epoxy asphalt B component for later use;
Step S302: mixing the epoxy asphalt B component with the modified fatty amine curing agent under normal temperature, and uniformly stirring to prepare an epoxy asphalt binder;
step S303: and (3) after the mixed mineral aggregate is dried, adding the epoxy asphalt binder prepared in the step (S302), and uniformly mixing to prepare the epoxy mortar.
The fifth layer asphalt concrete wearing layer from bottom to top in the figure 1 is paved by adopting an asphalt mastic macadam mixture SMA-13 with the thickness of 3.5-4.5 cm, wherein the asphalt mastic macadam mixture SMA-13 comprises modified asphalt and mixed mineral aggregate, and the mixed mineral aggregate comprises a mixture of basalt aggregate and limestone mineral powder; wherein, the mixed mineral aggregate adopts SMA-13 mixed material grading; the oil-stone ratio of the modified asphalt to the mixed mineral aggregate is 5.8% -6.3%.
The application provides an assembling process of a prefabricated cement concrete bridge deck asphalt pavement structure, which comprises the following steps of:
step S1: fixing the prefabricated sections of the bridge body in a factory, uniformly distributing adhesive on the cement concrete bridge deck, and forming a lower adhesive layer of 80-100 mu m on the cement concrete bridge deck;
Step S2: paving epoxy mortar within one day after the completion of the lower bonding layer, forming an asphalt mortar paving layer on the surface of the lower bonding layer, and adopting an industrial trowelling robot and a small road roller to perform detail construction optimization to manufacture a prefabricated member for asphalt pavement of the bridge beam Duan Jiege;
Step S3: after epoxy mortar in prefabricated members paved by asphalt of bridge beam Duan Jiege is fully solidified, a plurality of prefabricated members are transported to an engineering site, lifted and spliced into a whole, a splicing interface of an asphalt mortar paving layer is cleaned and flattened, a domestic epoxy asphalt binder is uniformly coated, a seamless expansion joint material is adopted for filling an interface splicing gap, and a small-sized compactor is adopted for mechanical rolling to form a seamless expansion joint; the method comprises the steps of adopting an epoxy asphalt concrete seamless expansion joint to strengthen a prefabricated member asphalt mortar paving and splicing interface, firstly preparing an epoxy asphalt concrete seamless expansion joint material, wherein the epoxy asphalt concrete seamless expansion joint material comprises epoxy asphalt and mixed mineral aggregate, and the mass ratio of the epoxy asphalt to the mixed mineral aggregate is 20:100-30:100; the epoxy asphalt consists of an A component and a B component, wherein the A component is E-51 type epoxy resin, the B component comprises matrix asphalt and a curing agent, and the mass ratio of the A component to the B component is 1:3.6-1:7.6; the mixed mineral aggregate comprises basalt aggregate and limestone mineral powder, the particle size of the mixed mineral aggregate comprises three grades, namely 5-10mm, 10-15mm and 15-20mm, and the mass ratio of the three grades is 0.3:0.35:0.35.
Step S4: uniformly spreading a binder on the surface of the asphalt mortar pavement layer, and forming an upper bonding layer of 80-100 mu m on the surface of the asphalt mortar pavement layer;
Step S5: and paving the asphalt mastic broken stone mixture SMA-13 in a day after finishing the bonding layer, wherein the paving thickness is 3.5-4.5cm, and completing the construction of the asphalt concrete wearing layer.
Examples:
specific embodiments are presented herein in order to more fully describe the application.
The first step: firstly, fixing prefabricated sections of bridge beams manufactured in factories, keeping the cement concrete bridge surfaces clean and dry, uniformly spraying domestic epoxy asphalt binder by using a mechanical spray head, determining the binder dosage before spraying according to the size of the cement concrete bridge surfaces, ensuring the thickness of a bonding layer to be 80-100 mu m, and then preserving for a period of time (6-24 hours);
And a second step of: heating 70 # matrix asphalt to 120 ℃, adding 6.7% (mass percent) of phenolic compatilizer, fully stirring and uniformly mixing, cooling the mixed solution to 40-80 ℃, uniformly mixing the mixed solution and bisphenol A epoxy resin according to the mass ratio of 3.2:1, and finally adding 19% (mass percent) of modified fatty amine curing agent under normal temperature condition, and uniformly mixing to prepare an epoxy asphalt binder for later use;
And a third step of: drying basalt aggregate with the maximum particle size of 2.36mm and limestone mineral powder, sieving to obtain six-grade mineral aggregate (the particle size ranges of 1.18mm-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and less than 0.075 mm), weighing and mixing the six-grade mineral aggregate according to the mass ratio of 28.3:13.2:15.8:15:9.5:18.2, and then mixing the mixed mineral aggregate with epoxy asphalt binder to prepare epoxy asphalt mortar, wherein the mass ratio of the epoxy asphalt binder to the mixed mineral aggregate is 1:10;
Fourth step: uniformly spreading the prepared epoxy asphalt mortar on a lower bonding layer, adopting an industrial trowelling robot and a small road roller to carry out flatness and compaction treatment, and finishing a 1.5-2cm thick epoxy asphalt mortar paving layer to prepare a bridge girder section and asphalt paving prefabricated member;
Fifth step: naturally curing the prefabricated member in a factory for more than 30 days to fully cure the epoxy asphalt mortar pavement, and then transporting the prefabricated member to an engineering site, wherein finished product protection is performed in the transportation process;
Hoisting and splicing prefabricated members of bridge beam sections and asphalt pavement together, cleaning and flattening asphalt mortar pavement splicing interfaces, and uniformly coating domestic epoxy asphalt binder on the splicing interfaces;
Sixth step: preparing an epoxy asphalt concrete seamless expansion joint material by adopting a two-component domestic warm mix epoxy asphalt binder and basalt aggregate, wherein the mass ratio of the two components of the epoxy asphalt binder is 1:5.8, mixing the two components at 110-130 ℃ to prepare the epoxy asphalt binder, keeping the temperature stable, weighing the basalt aggregate according to the composition of asphalt concrete mineral aggregate (shown in table 1), heating to the temperature stable at 120+/-2 ℃, adding the epoxy asphalt binder, and uniformly stirring to prepare the epoxy asphalt mixture, wherein the oil-stone ratio is 25%;
TABLE 1 mineral aggregate composition of epoxy asphalt concrete seamless expansion joint material
| Particle size range (mm) | 5～10 | 10～15 | 15～20 |
| Mass percent (%) | 30％ | 35％ | 35％ |
Seventh step: uniformly filling the prepared seamless expansion joint material into the splicing gap of the prefabricated section paved by the epoxy asphalt mortar, fully rolling by adopting a small-sized road roller, and performing smooth treatment to ensure good flatness of the paving of the lower layer;
Eighth step: uniformly spraying a domestic epoxy asphalt binder on the surface of an asphalt mortar pavement layer by adopting a spraying vehicle to ensure that the thickness of a bonding layer is 80-100 mu m, and then after curing for a period of time (6-24 hours), performing on-site paving and rolling construction on an SMA-13 asphalt mixture to form asphalt concrete abrasion layer construction with the thickness of 3.5-4.5cm, wherein the SMA-13 asphalt mixture comprises modified asphalt and mixed mineral aggregate (prepared from high-elastic modified asphalt, basalt aggregate and limestone mineral powder), wherein the grading composition is shown in a table 2, and the oil-stone ratio is 6.2%. Thus, the whole construction process of asphalt pavement assembly of the prefabricated cement concrete bridge deck is completed.
TABLE 2SMA-13 asphalt mixture grading composition
The conventional construction process of asphalt pavement of the bridge deck mainly on the construction site is compared with the prefabricated cement concrete bridge deck asphalt pavement structure and the assembly process thereof according to the application in terms of construction period, construction quality, construction cost and environmental influence, as shown in table 3:
Table 3 comparison of the conventional construction Process with the present patent
Through comparison of the two, the prefabricated cement concrete bridge deck asphalt pavement structure provided by the application has the advantages that the asphalt pavement main structure is subjected to factory standardized construction, the environmental interference is avoided, the construction defect is effectively reduced, the bridge deck pavement quality stability is ensured, the construction period is greatly shortened, and the low-carbonization, less-humanization, high-efficiency and high-quality construction of asphalt pavement is realized. In addition, the application provides a complete and feasible cement concrete bridge deck asphalt paving and assembling process, which is suitable for various large, medium and small bridge construction, effectively improves the bridge assembling degree and has good popularization value.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present application means that each exists alone or both exist.
"Connected" as used herein means either a direct connection between components or an indirect connection between components via other components.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. The utility model provides a but precast cement concrete bridge floor asphalt pavement structure which characterized in that: the prefabricated member comprises a bridge Duan Jiege asphalt pavement prefabricated section, wherein a lower bonding layer is paved on the surface of the bridge prefabricated section, and an asphalt mortar pavement layer is paved on the surface of the lower bonding layer;
when adjacent prefabricated members are spliced, seamless expansion joint materials are filled between adjacent asphalt mortar pavement layers to form a whole;
paving an upper bonding layer on the surface of the asphalt mortar pavement layer, and paving an asphalt concrete abrasion layer on the surface of the upper bonding layer;
the components of the upper bonding layer and the lower bonding layer are the same, and the bonding agent comprises epoxy resin and a curing agent, wherein the curing agent contains asphalt, and the mass ratio of the epoxy resin to the curing agent is 10:29-10:55;
the asphalt mortar pavement layer is paved by adopting epoxy mortar, the epoxy mortar comprises epoxy asphalt binder and mixed mineral aggregate, and the mass ratio of the epoxy asphalt binder to the mixed mineral aggregate is 0.95:10-1.1:10;
The mixed mineral aggregate comprises a mixture of basalt aggregate and limestone mineral powder;
The mixed mineral aggregate comprises a mixture of a plurality of gears, wherein the mixture is respectively a first-gear mineral aggregate, a second-gear mineral aggregate, a third-gear mineral aggregate, a fourth-gear mineral aggregate, a fifth-gear mineral aggregate and a sixth-gear mineral aggregate, and the mass ratio of the mixture of each gear is the first gear: second gear: third gear: fourth gear: fifth gear: sixth gear = 28.3:13.2:15.8:15:9.5:18.2;
wherein the first grade mineral aggregate is mineral aggregate with the grain size ranging from 1.18mm to 2.36mm, the second grade mineral aggregate is mineral aggregate with the grain size ranging from 0.6mm to 1.18mm, the third grade mineral aggregate is mineral aggregate with the grain size ranging from 0.3mm to 0.6mm, the fourth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.15mm to 0.3mm, the fifth grade mineral aggregate is mineral aggregate with the grain size ranging from 0.075mm to 0.15mm, and the sixth grade mineral aggregate is mineral aggregate with the grain size less than 0.075 mm.
2. The prefabricated cement concrete bridge deck asphalt pavement structure according to claim 1, wherein: the epoxy asphalt binder comprises bisphenol A type epoxy resin, modified fatty amine curing agent, phenolic compatilizer and 70 # matrix asphalt, wherein the mass ratio of the bisphenol A type epoxy resin to the modified fatty amine curing agent to the phenolic compatilizer to the 70 # matrix asphalt is 1:0.8:0.2:3.
3. The precast cement concrete deck asphalt pavement structure according to claim 2, wherein: the asphalt concrete wearing layer is paved by adopting an asphalt mastic macadam mixture SMA-13, wherein the asphalt mastic macadam mixture SMA-13 comprises modified asphalt and mixed mineral aggregate, and the mixed mineral aggregate comprises a mixture formed by basalt aggregate and limestone mineral powder;
Wherein, the mixed mineral aggregate adopts SMA-13 mixed material grading;
The oil-stone ratio of the modified asphalt to the mixed mineral aggregate is 5.8% -6.3%.
4. A precast cement concrete deck asphalt pavement structure according to claim 3, characterized in that: the seamless expansion joint material comprises epoxy asphalt and mixed mineral aggregate, wherein the mass ratio of the epoxy asphalt to the mixed mineral aggregate is 20:100-30:100;
the epoxy asphalt consists of an A component and a B component, wherein the A component is E-51 type epoxy resin, the B component comprises matrix asphalt and a curing agent, and the mass ratio of the A component to the B component is 1:3.6-1:7.6;
the mixed mineral aggregate comprises basalt aggregate and limestone mineral powder, the particle size of the mixed mineral aggregate comprises three grades, namely 5-10mm, 10-15mm and 15-20mm, and the mass ratio of the three grades is 0.3:0.35:0.35.
5. The precast cement concrete deck asphalt pavement structure according to claim 2, wherein: the preparation process of the epoxy mortar comprises the following steps:
Step S301: heating the No. 70 matrix asphalt to 120 ℃, adding a phenolic compatilizer, fully stirring until the mixture is uniformly mixed, cooling the mixed solution to 40-80 ℃, then adding bisphenol A epoxy resin, and uniformly stirring to obtain an epoxy asphalt B component for later use;
Step S302: mixing the epoxy asphalt B component with the modified fatty amine curing agent under normal temperature, and uniformly stirring to prepare an epoxy asphalt binder;
step S303: and (3) after the mixed mineral aggregate is dried, adding the epoxy asphalt binder prepared in the step (S302), and uniformly mixing to prepare the epoxy mortar.
6. The assembling process of the prefabricated cement concrete bridge deck asphalt pavement structure according to claim 4, wherein the assembling process comprises the following steps of: the method comprises the following steps:
step S1: fixing the prefabricated sections of the bridge body in a factory, uniformly distributing adhesive on the cement concrete bridge deck, and forming a lower adhesive layer of 80-100 mu m on the cement concrete bridge deck;
Step S2: paving epoxy mortar within one day after the completion of the lower bonding layer, forming an asphalt mortar paving layer with the thickness of 1.5-2cm on the surface of the lower bonding layer, and adopting an industrial trowelling robot and a small road roller to perform detail construction optimization so as to manufacture a prefabricated member for asphalt pavement of the bridge beam Duan Jiege;
Step S3: naturally curing prefabricated members paved by asphalt of bridge beam Duan Jiege in a factory for at least 30 days, after the epoxy mortar is fully cured, transporting a plurality of prefabricated members to an engineering site, hoisting and splicing to form a whole, cleaning and flattening the splicing interface of an asphalt mortar paving layer, uniformly coating domestic epoxy asphalt binder, filling an interface splicing gap by adopting a seamless expansion joint material, and mechanically rolling by adopting a small-sized compactor to form a seamless expansion joint;
step S4: uniformly spreading a binder on the surface of the asphalt mortar pavement layer, and forming an upper bonding layer of 80-100 mu m on the surface of the asphalt mortar pavement layer;
Step S5: and paving the asphalt mastic broken stone mixture SMA-13 in a day after finishing the bonding layer, wherein the paving thickness is 3.5-4.5cm, and completing the construction of the asphalt concrete wearing layer.
7. The assembling process of the prefabricated cement concrete bridge deck asphalt pavement structure according to claim 6, wherein the assembling process comprises the following steps of: and (2) fully mixing the adhesive in the step (S1) at 110-130 ℃ by using epoxy resin and a curing agent.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280008A (en) * | 1998-03-31 | 1999-10-12 | Shimizu Corp | Precast paving floor board and manufacture thereof |
| JP2003155708A (en) * | 2001-11-22 | 2003-05-30 | Inoac Corp | Sealing material between bridge girder and floor slab |
| UA82922C2 (en) * | 2006-07-03 | 2008-05-26 | Donbas Academy Of Building And | Cast asphalt polymer sulphur concrete mix |
| KR101270727B1 (en) * | 2012-11-29 | 2013-06-03 | 한국건설기술연구원 | Method for manufacturing carpet type asphalt concrete mixture |
| CN103964751A (en) * | 2014-04-22 | 2014-08-06 | 武汉二航路桥特种工程有限责任公司 | Epoxy mortar bridge floor thin layer paving material and preparation method thereof |
| CN204608598U (en) * | 2015-05-08 | 2015-09-02 | 山西省交通科学研究院 | A kind of seamless bridge joint structure |
| CN106192757A (en) * | 2016-02-03 | 2016-12-07 | 重庆市智翔铺道技术工程有限公司 | A kind of paving steel bridge deck method of assembling |
| CN108411781A (en) * | 2018-05-11 | 2018-08-17 | 南京林业大学 | A kind of neo-epoxy resin footbridge Steel Bridge Deck thin layer paving structure |
| CN108729321A (en) * | 2018-05-25 | 2018-11-02 | 东南大学 | A kind of prefabricated Orthotropic steel plate paving structure and its method for paving |
| JP6572419B1 (en) * | 2018-06-08 | 2019-09-11 | 学校法人日本大学 | Bridge pavement structure and pavement method |
| CN111424494A (en) * | 2020-04-04 | 2020-07-17 | 山西省交通科技研发有限公司 | Multifunctional pavement paving system based on sponge city |
| CN111705656A (en) * | 2020-07-03 | 2020-09-25 | 重庆市智翔铺道技术工程有限公司 | Steel bridge deck pavement layer |
| CN113200711A (en) * | 2021-04-25 | 2021-08-03 | 江苏现代路桥有限责任公司 | Preparation method of high-performance epoxy asphalt paving material |
| CN114214946A (en) * | 2021-12-13 | 2022-03-22 | 中铁五局集团华南工程有限责任公司 | Construction method of high-durability unequal-thickness steel bridge deck pavement structure |
| CN114277677A (en) * | 2021-12-31 | 2022-04-05 | 江苏中路工程技术研究院有限公司 | Novel rigid-flexible composite steel bridge deck pavement structure and pavement method thereof |
-
2022
- 2022-08-22 CN CN202211007288.6A patent/CN115262379B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280008A (en) * | 1998-03-31 | 1999-10-12 | Shimizu Corp | Precast paving floor board and manufacture thereof |
| JP2003155708A (en) * | 2001-11-22 | 2003-05-30 | Inoac Corp | Sealing material between bridge girder and floor slab |
| UA82922C2 (en) * | 2006-07-03 | 2008-05-26 | Donbas Academy Of Building And | Cast asphalt polymer sulphur concrete mix |
| KR101270727B1 (en) * | 2012-11-29 | 2013-06-03 | 한국건설기술연구원 | Method for manufacturing carpet type asphalt concrete mixture |
| CN103964751A (en) * | 2014-04-22 | 2014-08-06 | 武汉二航路桥特种工程有限责任公司 | Epoxy mortar bridge floor thin layer paving material and preparation method thereof |
| CN204608598U (en) * | 2015-05-08 | 2015-09-02 | 山西省交通科学研究院 | A kind of seamless bridge joint structure |
| CN106192757A (en) * | 2016-02-03 | 2016-12-07 | 重庆市智翔铺道技术工程有限公司 | A kind of paving steel bridge deck method of assembling |
| CN108411781A (en) * | 2018-05-11 | 2018-08-17 | 南京林业大学 | A kind of neo-epoxy resin footbridge Steel Bridge Deck thin layer paving structure |
| CN108729321A (en) * | 2018-05-25 | 2018-11-02 | 东南大学 | A kind of prefabricated Orthotropic steel plate paving structure and its method for paving |
| JP6572419B1 (en) * | 2018-06-08 | 2019-09-11 | 学校法人日本大学 | Bridge pavement structure and pavement method |
| CN111424494A (en) * | 2020-04-04 | 2020-07-17 | 山西省交通科技研发有限公司 | Multifunctional pavement paving system based on sponge city |
| CN111705656A (en) * | 2020-07-03 | 2020-09-25 | 重庆市智翔铺道技术工程有限公司 | Steel bridge deck pavement layer |
| CN113200711A (en) * | 2021-04-25 | 2021-08-03 | 江苏现代路桥有限责任公司 | Preparation method of high-performance epoxy asphalt paving material |
| CN114214946A (en) * | 2021-12-13 | 2022-03-22 | 中铁五局集团华南工程有限责任公司 | Construction method of high-durability unequal-thickness steel bridge deck pavement structure |
| CN114277677A (en) * | 2021-12-31 | 2022-04-05 | 江苏中路工程技术研究院有限公司 | Novel rigid-flexible composite steel bridge deck pavement structure and pavement method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 材料组成对环氧沥青砂浆间接抗拉性能影响的灰色关联分析;宋鑫;;公路;20150325(第03期);第153-159页 * |
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