CN107245944A - Novel super-high performance ECC bridge floors combining structure and construction method suitable for steel bridge - Google Patents
Novel super-high performance ECC bridge floors combining structure and construction method suitable for steel bridge Download PDFInfo
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- CN107245944A CN107245944A CN201710165731.5A CN201710165731A CN107245944A CN 107245944 A CN107245944 A CN 107245944A CN 201710165731 A CN201710165731 A CN 201710165731A CN 107245944 A CN107245944 A CN 107245944A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 79
- 239000004568 cement Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000010008 shearing Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000002787 reinforcement Effects 0.000 claims description 20
- 229920002472 Starch Polymers 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 11
- 235000019698 starch Nutrition 0.000 claims description 11
- 239000008107 starch Substances 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000010881 fly ash Substances 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000011344 liquid material Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002932 luster Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000000384 rearing effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- -1 Vinal Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000008961 swelling Effects 0.000 claims 1
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 239000011384 asphalt concrete Substances 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000011210 fiber-reinforced concrete Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 239000011182 bendable concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
-
- 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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of novel super-high performance ECC bridge floors combining structure and construction method suitable for steel bridge, the superhigh tenacity cement composite substrate bed of material constructed including reinforcing bar shearing resistance, being placed in the steel bridge deck layer of bottom and be cast on steel bridge deck layer, reinforcing bar shearing resistance construction is cast in superhigh tenacity cement-based material；The making bituminous concrete wearing course above the superhigh tenacity cement composite substrate bed of material.In steel-ultra-tough cement-base composite material bridge floor combining structure in the present invention, the use of ultra-tough cement-base composite material pave-load layer, avoid longitudinal crack and wave passage that traditional asphalt concrete pavement produces at temperature and vehicular load repeated action and local gather around the diseases such as bag, comminuted crack, car patency and comfortableness are improved, and is also had very great help to the raising of the durability of bridge structure.
Description
Technical field
The present invention relates to a kind of Steel Bridge combining structure, pavement material and its construction method, and in particular to one kind is suitable to
The novel super-high toughness cement-base composite material bridge floor combining structure and its construction method of steel bridge.
Background technology
With building up for a large amount of steel bridges, China's steel bridge construction design and construction technique level is improved quickly, but deck paving
The development of technology but relatively lags behind, and causes quality problems and disease that most of steel bridges occur in use to occur mainly with
Deck paving, the weak link as influence China steel bridge construction quality.
The bridge deck pavement material for being presently used for steel bridge is mostly bituminous concrete, but bituminous concrete heat endurance is poor, and
Shearing strength is not enough between asphalt mixture surfacing and floorings, and the generation rut that causes to mat formation, push, to gather around the phenomenons such as bag more general
Time, reduce the security and comfortableness of driving.In addition, steel plate is differed with the constriction coefficient and modulus of elasticity of asphalt pavement material
It is larger, also easily cause the cracking of pave-load layer.
Superhigh tenacity cement-base composite material (Engineered Cementitious Composites, be abbreviated as ECC),
It is a kind of fibre reinforced concrete with superhigh tenacity.Different and common fibre reinforced concretes (FRC), ECC is a kind of
The characteristics of advanced material through Micromechanical Design, the characteristics of being ftractureed with many gap stable states, i.e. strain hardening, its limit is drawn should
Stabilize higher than 3%, be more than 20 times of reinforcement yielding strain, 28 days compression strength can reach more than 50MPa, and the limit is curved to draw strong
Degree can exceed 14MPa, and density is less than 2kg/cm3, shock resistance is better than steel fiber reinforced concrete.Due to excellent stretching resistance
The endurance quality such as performance, excellent cracking resistance, shock resistance, wear-resisting is learned, good following, ECC can expire as bridge deck pavement
Sufficient bridge and grand bridge floorings are subjected to drawing, the alternating action of compression, prevent deck paving from ftractureing, effectively solve bridge floor
Mat formation the problem of work with cracking.Therefore, existing deck paving disease can effectively be solved as bridge deck pavement material using ECC.
But for the relatively common concrete of ECC, it shrinks big, meanwhile, ECC, which has that viscosity is larger, to be difficult floating, surface easy to foaming etc. applies
Work problem.Therefore the component of the invention by changing ECC, reduces its early-age shrinkage, and propose a kind of new stand suitable for ECC
Mat formation and put.
The content of the invention
Present invention aim to address existing steel bridge deck pavement produced problem there is provided one kind from heavy and light, pavement thickness
The superhigh tenacity cement base that thin, cracking resistance anti-fatigue performance is strong, temperature stabilization performance is good, driving performance is good, shear behavior is good is answered
Condensation material bridge floor combining structure, and its corresponding construction equipment and applicable construction method.
To solve the problems of above-mentioned steel bridge deck pavement, technical scheme proposed by the present invention is a kind of steel-superelevation
Toughness cement-base composite material bridge floor combining structure, specific structure is as follows：
A kind of steel-superhigh tenacity cement-base composite material bridge floor combining structure, including reinforcing bar shearing resistance construct, are placed in bottom
Steel bridge deck layer and the superhigh tenacity cement composite substrate bed of material that is cast on steel bridge deck layer, reinforcing bar shearing resistance construction is cast in
In superhigh tenacity cement-based material；The making bituminous concrete wearing course above the superhigh tenacity cement composite substrate bed of material.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, described reinforcing bar shearing resistance structure includes pre-
The shear connector for being first welded on steel bridge deck layer top surface and the prewelding bar-mat reinforcement for being welded thereon face.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, the superhigh tenacity cement base is combined
Making has bituminous concrete wearing course above material layer.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, described superhigh tenacity cement base is answered
Condensation material pave-load layer is to be poured to form by superhigh tenacity cement-base composite material.
Further, described superhigh tenacity cement-base composite material, includes the compound glue of cement and flyash composition
Gel material, thickener, quartz sand, vinal, water, glass microballoon, pretreated starch and high efficiency water reducing agent.Its each component
Shared mass ratio is, cement 15%~30%, flyash 25%~35%, quartz sand 10%~25%, thickener
0.02%~0.03%, water 12%~20%, fiber 1%~1.5%, water reducer 0.1%~0.3%, hollow glass micropearl 0%
~10%, pretreated starch 0%~3%.
Further, described superhigh tenacity cement-base composite material, includes the compound glue of cement and flyash composition
Gel material, thickener, quartz sand, PE fibers, water, glass microballoon, pretreated starch and high efficiency water reducing agent.Shared by its each component
Mass ratio is, cement 15%~30%, flyash 25%~35%, quartz sand 10%~25%, thickener 0.02%~
0.03%, water 12%~20%, fiber 1%~1.5%, water reducer 0.1%~0.3%, hollow glass micropearl 0%~10%,
Pretreated starch 0%~3%.
The construction method of above-mentioned bridge deck structure is as follows:
Step 1, cleaning steel bridge deck layer, weld shear connector
Want bridge floor tentatively to be cleaned before 1-1 constructions, remove the foul of bridge floor, and keep the cleaning of working face, dry.It is anti-
Cut connecting key use with steel box-girder identical steel, and be welded on steel bridge deck；
Step 2, derusting by sandblasting and rust prevention by applying liquid material paint are carried out to the structure in step 1, make bar-mat reinforcement, and in shear connections
Welded steel fabric on key；
2-1 carries out derusting by sandblasting to the steel bridge deck set up, removes the debris on Steel Bridge Deck surface, blows bridge floor and dispose
Iron rust and other debris, keep bridge floor clean, surface of steel plate show the metallic luster become clear.Using airless spraying equipment
Rust prevention by applying liquid material paint；It is required that smooth, uniform, bubble-free and crackle.
2-2 is using welded mesh forming machine the vertical and horizontal shear reinforcement with identical or different diameter respectively with certain
Spacing arrangement, the mesh sheet that whole crosspoints are molded using welding manner, by longitudinal shear resistance steel bar welding in lower section, horizontal shearing resistance
Shear reinforcement net is welded on shear connector, and ensure protective layer thickness upper by reinforcing bar.
Step 3 is mated formation track
Deployment equipment walking track is used as in bridge floor upper mounting rail.
Step 4, pave superhigh tenacity cement-base composite material
Cement-base composite material is paved using Fig. 4 deployment equipments, and construction procedure is as follows：
4-1 superhigh tenacities cement-base composite material can be using factory companion or job mix.Its slump flow test is detected in batches,
Qualified rear can be used.
Superhigh tenacity cement-base composite material is poured into deployment equipment by 4-2 by hopper, when the superhigh tenacity cement in hopper
When based composites are accumulated to the half of hopper height open motor equipment is advanced slowly on guide rail, pace be 1~
3m/min.With the advance of equipment, the levelling floating material surface of plate realizes paving for superhigh tenacity cement-base composite material.Pressure
Solid plate be pressed in it is floating after superhigh tenacity cement-base composite material surface on, prevent extruding swell.
4-3 strictly controls the slump flow test of superhigh tenacity cement-base composite material, it is ensured that from close property.After the completion of pouring,
Carry out smart flat facing.
After step 5, superhigh tenacity cement-base composite material making are complete, superhigh tenacity cement-base composite material layer is supported
Shield；
After superhigh tenacity cement-base composite material making is complete, health is carried out using modes such as geotextiles, covered rearing with plastic film,
Intensity reaches after requirement is directly sprinkled water health using bridge on sprinkling truck, and curing time must not be less than seven days.
Step 6. paves wearing course
The making bituminous concrete wearing course above cement-base composite material pave-load layer, completes steel-superhigh tenacity cement base
The construction of composite material combination bridge deck structure.
Constructed in described step 4 equipment of use, including hopper, levelling plate, squeeze board, driving wheel, guide rail, rotating shaft and
Motor；Described driving wheel includes four, and two of which is driving wheel, and two other is follower；Two driving wheels are arranged on
The two ends of rotating shaft, described rotating shaft is driven by motor, and described hopper is open up and down, and is provided with a side bottom of hopper
Levelling plate and squeeze board on a horizontal plane are welded on, and one end of levelling plate is welded on hopper side, the other end and squeeze board
Welding.
Beneficial effects of the present invention are as follows：
In steel-ultra-tough cement-base composite material bridge floor combining structure in the invention described above, ultra-tough cement base is combined
The use of material pave-load layer, it is to avoid the longitudinal direction that traditional asphalt concrete pavement is produced at temperature and vehicular load repeated action
Crack and wave passage and part gather around the diseases such as bag, comminuted crack, improve car patency and comfortableness, and to bridge
The raising of the durability of girder construction also has very great help.
Due to superhigh tenacity cement-base composite material compared to normal concrete for, density is relatively low.Meanwhile, glass microballoon
Addition further reduction superhigh tenacity cement-base composite material density, reduction pave-load layer deadweight, improve the carrying of bridge
Power.Pretreated starch then, reduces the early-age shrinkage cracking of pave-load layer, further increases the durability of pave-load layer, extend
The service life of bridge.
In the present invention, because superhigh tenacity cement-base composite material has in good filling performance, work progress, without
Shock, save labour, eliminate construction noise harm.Meanwhile, the use of new lying device solves ultra-tough cement base and answered
Condensation material pave difficulty the problem of, improve construction quality, accelerate construction speed.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the partial perspective of present example steel-ultra-tough cement-base composite material combined bridge deck structure overlook direction
Figure；
Fig. 2 is present example along bridge cross-sectional view (Section A-A figure does not show floor web)；
Fig. 3 is present example along bridge longitudinal section (section B-B figure does not show floor web)；
Fig. 4 is the special laying equipment of present example；
Marginal data：1st, longitudinal ribbed stiffener；2nd, bituminous concrete wearing course；3rd, longitudinal shear resistance reinforcing bar；4th, horizontal shearing resistance steel
Muscle；5th, shear reinforcement net；6th, steel bridge deck；7th, shear connector；8th, superhigh tenacity cement-base composite material pave-load layer；9th, expect
Bucket；10th, guide rail；11st, driving wheel；12nd, hydraulic pressure Diesel engine；13rd, rotating shaft；14th, levelling plate；15th, squeeze board.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
The present embodiment provides steel-ultra-tough cement-base composite material combined bridge deck structure shown in a kind of Fig. 3 of Fig. 1 mono-, should
Combined bridge deck structure includes underlying steel bridge deck layer 6 and the superhigh tenacity cement base being cast on steel bridge deck layer is combined
Material pave-load layer 8, the top of steel bridge deck layer 6 is welded with shear reinforcement net 5, and shear reinforcement net 5 is cast in superhigh tenacity cement base
In composite.The bar-mat reinforcement shearing resistance is configured to individual layer reinforcing bar web frame；And it is additionally provided with longitudinal ribbed stiffener 1 in steel bridge deck layer 6.
Superhigh tenacity cement-base composite material layer 8 in the present embodiment be poured by superhigh tenacity cement-base composite material and
Into.The top of superhigh tenacity cement-base composite material layer 8 is provided with bituminous concrete wearing course 2.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, described superhigh tenacity cement base is answered
Condensation material pave-load layer is to be poured to form by superhigh tenacity cement-base composite material.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, described reinforcing bar shearing resistance structure includes pre-
The shear reinforcement net 5 of the shear connector 7 for being first welded on steel bridge deck layer top surface and the prewelding for being welded thereon face.
Shear reinforcement net 5 includes many with longitudinal shear resistance reinforcing bar 3 and horizontal shear reinforcement 4；
Further, described superhigh tenacity cement-base composite material, includes the compound glue of cement and flyash composition
Gel material, thickener, quartz sand, vinal (or PE fibers), water, glass microballoon, pretreated starch and efficient diminishing
Agent；
Mass ratio shared by its each component is, cement 15%~30%, flyash 25%~35%, quartz sand 10%~
25%, thickener 0.02%~0.03%, water 12%~20%, fiber 1%~1.5%, water reducer 0.1%~0.3% is hollow
Glass microballoon 0%~10%, pretreated starch 0%~3%.
The construction method of the above-mentioned steel of the present embodiment-superhigh tenacity cement-base composite material combined bridge deck structure, specific bag
Include following steps：
Step 1, cleaning steel bridge deck layer, weld shear connector
Want bridge floor tentatively to be cleaned before 1-1 constructions, remove the foul of bridge floor, and keep the cleaning of working face, dry.It is anti-
Cut connecting key use with steel box-girder identical steel, and be welded on steel bridge deck；
Step 2, derusting by sandblasting and rust prevention by applying liquid material paint are carried out to the structure in step 1, make bar-mat reinforcement, and in shear connections
Welded steel fabric on key；
2-1 carries out derusting by sandblasting to the steel bridge deck set up, removes the debris on Steel Bridge Deck surface, blows bridge floor and dispose
Iron rust and other debris, keep bridge floor clean, surface of steel plate show the metallic luster become clear.Using airless spraying equipment
Rust prevention by applying liquid material paint；It is required that smooth, uniform, bubble-free and crackle.
2-2 is using welded mesh forming machine the vertical and horizontal shear reinforcement with identical or different diameter respectively with certain
Spacing arrangement, the mesh sheet that whole crosspoints are molded using welding manner, by longitudinal shear resistance steel bar welding in lower section, horizontal shearing resistance
Shear reinforcement net is welded on shear connector, and ensure protective layer thickness upper by reinforcing bar.
Step 3 is mated formation track
Deployment equipment walking track is used as in bridge floor upper mounting rail.
Step 4, pave superhigh tenacity cement-base composite material
Cement-base composite material is paved using Fig. 4 deployment equipments, and construction procedure is as follows：
4-1 superhigh tenacities cement-base composite material can be using factory companion or job mix.Its slump flow test is detected in batches,
Qualified rear can be used.
Superhigh tenacity cement-base composite material is poured into deployment equipment by 4-2 by hopper, when the superhigh tenacity cement in hopper
When based composites are accumulated to the half of hopper height open motor equipment is advanced slowly on guide rail, pace be 1~
3m/min.With the advance of equipment, the levelling floating material surface of plate realizes paving for superhigh tenacity cement-base composite material.Pressure
Solid plate be pressed in it is floating after superhigh tenacity cement-base composite material surface on, prevent extruding swell.
4-3 strictly controls the slump flow test of superhigh tenacity cement-base composite material, it is ensured that from close property.After the completion of pouring,
Carry out smart flat facing.
After step 5, superhigh tenacity cement-base composite material making are complete, superhigh tenacity cement-base composite material layer is supported
Shield；
After superhigh tenacity cement-base composite material making is complete, health is carried out using modes such as geotextiles, covered rearing with plastic film,
Intensity reaches after requirement is directly sprinkled water health using bridge on sprinkling truck, and curing time must not be less than seven days.
Step 6. paves wearing course
The making bituminous concrete wearing course above cement-base composite material pave-load layer, completes steel-superhigh tenacity cement base
The construction of composite material combination bridge deck structure.
In above-mentioned steel-superhigh tenacity cement-base composite material combined bridge deck structure, described lying device be it is new from
Main design, the equipment that superhigh tenacity cement-base composite material paves can be efficiently completed.Its it is main by hopper, levelling plate,
Driving wheel, rotating shaft, squeeze board and hydraulic pressure Diesel engine etc. are constituted, and wherein hopper, levelling plate, squeeze board use weld connection,
Coupled between hydraulic pressure Diesel engine, rotating shaft, driving wheel, guide rail using high-strength bolt.
Described driving wheel 11 includes four, and it is moved back and forth on guide rail 10；Two of which is driving wheel, two other
It is follower；Two driving wheels are arranged on the two ends of rotating shaft, and described rotating shaft 13 is driven by hydraulic pressure Diesel engine 12, described
Hopper be open about 9, and be provided with a side bottom of hopper 9 and be welded on levelling plate 14 and squeeze board on a horizontal plane
15, and one end of levelling plate 14 is welded on the side of hopper 9, the other end is welded with squeeze board 15.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (10)
1. a kind of novel super-high performance ECC bridge floor combining structures suitable for steel bridge, it is characterised in that constructed including reinforcing bar shearing resistance,
It is placed in the steel bridge deck layer of bottom and the superhigh tenacity cement composite substrate bed of material being cast on steel bridge deck layer, reinforcing bar shearing resistance structure
Make and be cast in superhigh tenacity cement-based material；Making bituminous concrete is worn away above the superhigh tenacity cement composite substrate bed of material
Layer.
2. it is suitable to the novel super-high performance ECC bridge floor combining structures of steel bridge as claimed in claim 1, it is characterised in that steel-
In superhigh tenacity cement-base composite material combined bridge deck structure, described reinforcing bar shearing resistance structure includes being pre-welded to steel bridge deck layer
The shear connector of top surface and the prewelding bar-mat reinforcement for being welded thereon face.
3. it is suitable to the novel super-high performance ECC bridge floor combining structures of steel bridge as claimed in claim 1, it is characterised in that described
Superhigh tenacity cement-base composite material layer top making has bituminous concrete wearing course.
4. it is suitable to the novel super-high performance ECC bridge floor combining structures of steel bridge as claimed in claim 1, it is characterised in that described
Superhigh tenacity cement-base composite material pave-load layer be to be poured to form by superhigh tenacity cement-base composite material.
5. it is suitable to the novel super-high performance ECC bridge floor combining structures of steel bridge as claimed in claim 4, it is characterised in that described
Superhigh tenacity cement-base composite material, including cement and flyash composition compound binder materials, thickener, quartz sand,
Vinal, water, glass microballoon, pretreated starch and water reducer；Mass ratio shared by its each component is, cement 15%
~30%, flyash 25%~35%, quartz sand 10%~25%, thickener 0.02%~0.03%, water 12%~20% gathers
Alcohol fibers 1%~1.5%, water reducer 0.1%~0.3%, glass microballoon 0%~10%, pretreated starch 0%~3%.
6. it is suitable to the novel super-high performance ECC bridge floor combining structures of steel bridge as claimed in claim 4, it is characterised in that described
Superhigh tenacity cement-base composite material, including cement and flyash composition compound binder materials, thickener, quartz sand,
PE fibers, water, glass microballoon, pretreated starch and water reducer；Mass ratio shared by its each component is, cement 15%~
30%, flyash 25%~35%, quartz sand 10%~25%, thickener 0.02%~0.03%, water 12%~20%, PE is fine
Dimension 1%~1.5%, water reducer 0.1%~0.3%, glass microballoon 0%~10%, pretreated starch 0%~3%.
7. the construction method of the novel super-high performance ECC bridge floor combining structures suitable for steel bridge described in claim 1, its feature exists
In as follows:
Step 1, cleaning steel bridge deck layer, weld shear connector；
Step 2, derusting by sandblasting and rust prevention by applying liquid material paint are carried out to the structure in step 1, make bar-mat reinforcement, and on shear connector
Welded steel fabric；
Step 3 is mated formation track；Deployment equipment walking track is used as in bridge floor upper mounting rail；
Step 4, pave superhigh tenacity cement-base composite material
Cement-base composite material is paved using deployment equipment, and construction procedure is as follows：
4-1 superhigh tenacities cement-base composite material can be using factory companion or job mix；Its slump flow test is detected in batches, it is qualified
Rear can be used.
Superhigh tenacity cement-base composite material is poured into deployment equipment by 4-2 by hopper, when the superhigh tenacity cement base in hopper is answered
Motor is opened when condensation material is accumulated to the half of hopper height makes equipment be advanced slowly on guide rail；With the advance of equipment, look for
The floating material surface of flat board, realizes paving for superhigh tenacity cement-base composite material.Squeeze board be pressed in it is floating after superhigh tenacity
On cement-base composite material surface, prevent extruding from swelling；
4-3 strictly controls the slump flow test of superhigh tenacity cement-base composite material, it is ensured that from close property.After the completion of pouring, carry out
The flat facing of essence.
After step 5, superhigh tenacity cement-base composite material making are complete, superhigh tenacity cement-base composite material layer is conserved；
After superhigh tenacity cement-base composite material making is complete, health, intensity are carried out using modes such as geotextiles, covered rearing with plastic film
Reach after requirement and directly to be sprinkled water health using bridge on sprinkling truck, curing time must not be less than seven days.
Step 6. paves wearing course
The making bituminous concrete wearing course above cement-base composite material pave-load layer, completes steel-superhigh tenacity cement base and is combined
The construction of combination of materials bridge deck structure.
8. the construction method of the novel super-high performance ECC bridge floor combining structures suitable for steel bridge described in claim 7, its feature
It is, the equipment for use of being constructed in described step 4, including hopper, levelling plate, squeeze board, driving wheel, guide rail, rotating shaft and electricity
Machine；Described driving wheel includes four, and two of which is driving wheel, and two other is follower；Two driving wheels, which are arranged on, to be turned
The two ends of axle, described rotating shaft is driven by motor, and described hopper is open up and down, and is provided with weldering in a side bottom of hopper
Levelling plate and squeeze board on a horizontal plane are connected on, and one end of levelling plate is welded on hopper side, the other end is welded with squeeze board
Connect.
9. the construction method of the novel super-high performance ECC bridge floor combining structures suitable for steel bridge described in claim 7, its feature
It is,
The specific method of step 1：Want bridge floor tentatively to be cleaned before construction, remove the foul of bridge floor, and keep the clean of working face
Only, dry；Shear connector use with steel box-girder identical steel, and be welded on steel bridge deck.
10. the construction method of the novel super-high performance ECC bridge floor combining structures suitable for steel bridge described in claim 7, it is special
Levy and be, the specific method of step 2：
2-1 carries out derusting by sandblasting to the steel bridge deck set up, removes the debris on Steel Bridge Deck surface, blows the iron that bridge floor is disposed
Rust and other debris, keep bridge floor clean, surface of steel plate shows bright metallic luster；Sprayed using airless spraying equipment
Antirust paint；It is required that smooth, uniform, bubble-free and crackle；
2-2 is using welded mesh forming machine the vertical and horizontal shear reinforcement with identical or different diameter respectively between certain
Away from arrangement, the mesh sheet that whole crosspoints are molded using welding manner, by longitudinal shear resistance steel bar welding in lower section, horizontal shear reinforcement
Upper, shear reinforcement net is welded on shear connector, and ensure protective layer thickness.
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| CN113073552A (en) * | 2021-04-13 | 2021-07-06 | 山东科技大学 | Steel bridge deck high-ductility cement-based composite material paving structure and construction method |
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| CN113215984A (en) * | 2021-05-31 | 2021-08-06 | 中交第三公路工程局有限公司 | Surface structure of asphalt concrete steel mesh composite bridge and construction method |
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