CN107558364A - A kind of low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough and construction method - Google Patents
A kind of low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough and construction method Download PDFInfo
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- CN107558364A CN107558364A CN201710913237.2A CN201710913237A CN107558364A CN 107558364 A CN107558364 A CN 107558364A CN 201710913237 A CN201710913237 A CN 201710913237A CN 107558364 A CN107558364 A CN 107558364A
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Abstract
The invention discloses a kind of low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough and construction method, structure to include from bottom to top：Cement-based material basic unit, water-proof tack coat and asphalt surface course.Cement-based material basic unit is connected with steel bridge deck by shear connector, it be furnished with 1~2 layer of mesh sheet along short transverse, it is mixed by cement, flyash, silica flour, swelling agent, water reducer, fine sand, fiber and water, 28 days axial compressive strength R >=70MPa, ultimate tensile strength δ >=1.2%, corresponding maximum crack width Δ≤0.2mm, dry within 28 days and shrink the μ ε of s≤300, live cold mixing, normal temperature maintenance.Water-proof tack coat uses asphaltum with high viscosity, and 60 DEG C of dynamic viscosity v >=60000Pas, adhesive property is good, and with waterproof and prevents the extension of cement-based material basic crack and the upwards function such as reflection.The present invention has the characteristics that toughness is high, temperature stability is good, good endurance, easy for construction, good economy performance.
Description
Technical field
The invention belongs to technical field of bridge engineering, is related to a kind of low drying shrinkage cement-based material paving steel bridge deck knot of ultra-tough
Structure and its construction method.
Background technology
Since nineteen fifty, generation came out, Orthotropic Steel Bridge Deck turns into state by advantage in light weight, speed of application is fast
The widely used bridge deck structure form of inside and outside big-and-middle span steel bridge.However, finding in use, many steel deck pavings take on
Showed it is serious ftracture, it is local gather around the diseases such as bag, rut, reason is mainly：(1) construction features of orthotropic steel bridge deck determine
Its local stiffness is relatively low, causes deck paving stress complicated, local pressure is big；(2) conventional asphalitine pavement material itself
Rigidity is low, and temperature sensitivity is strong, can soften at high temperature.
In general, engineering staff can be from optimization Steel Bridge Deck structure detail, raising asphalt pavement material property, strict demand
Construction, overload control etc. the structural shape of Orthotropic Steel Bridge Deck and are mated formation the generation that reduces or slow down disease
The self-characteristic of material determines that these measures can not effect a permanent cure.
Cement-based material has the characteristics that rigidity is big, temperature stability is good, in Orthotropic Steel Bridge Deck and pitch coagulation
The cement matrix bed of material of the one layer of modulus of elasticity between steel and bituminous concrete is set up between native surface layer, while strengthens interlayer company
Connect, realize cooperative transformation, can effectively reduce rigidity gradient between material of paving course, improve the building ring of asphalt concrete pavement
Border, effectively lift stability, comfortableness and the durability of paving structure.However, because cement-based material rigidity intermediate layer will be divided
Larger wheel load internal force is carried on a shoulder pole, therefore, requirements at the higher level are proposed to its tensile property, it is special that normal concrete can not be competent at this
Different task.
The content of the invention
(1) technical problems to be solved
In view of this, it is an object of the invention to provide a kind of toughness is high, temperature stability is good, good endurance, construction party
Just, the low drying shrinkage cement-based material bridge deck pavement structure of the ultra-tough of good economy performance and its construction method, solve current steel bridge bridge
Face is mated formation the problem that disease is more, service life is short.
(2) technical scheme
One aspect of the present invention provides a kind of ultra-tough low drying shrinkage cement-based material bridge deck pavement structure, including：Cement base
Material base layer (1), water-proof tack coat (2) and asphalt surface course (3), wherein, the cement-based material basic unit (1) is laid on Steel Bridge Deck
Above plate (4), and it is connected with steel bridge deck (4) by shear connector (5), is provided with the cement-based material basic unit (1)
At least one layer of mesh sheet (6)；The water-proof tack coat (2) is arranged between cement-based material basic unit (1) and asphalt surface course (3), is used
In the effective bonding of guarantee between the two, and with waterproof and prevent the extension of cement-based material basic unit (1) crack and upward reflection
Function.
In some exemplary embodiments of the invention, the thickness of the cement-based material basic unit (1) is 45~70mm；It is described
The thickness of water-proof tack coat (2) is 2~6mm；The thickness of the asphalt surface course (3) is 30~50mm.
In some exemplary embodiments of the invention, the shear connector (5) is followed closely for weldering, and multiple weldering nails are fixed on vertically
On steel bridge deck (4), and it is internal to be cast in cement-based material basic unit (1)；A diameter of 8mm~13mm of the weldering nail, highly it is
35~55mm, the spacing between adjacent weldering is followed closely is 100~300mm, and the height for welding nail is smaller than the thickness of cement-based material basic unit (1)
10~15mm.
In some exemplary embodiments of the invention, the mesh sheet (6) is the steel by being vertically and horizontally arranged above and below in " well " shape
Muscle or FRP tendons are formed by welding or colligation；The a diameter of 6mm or 8mm of the reinforcing bar or FRP tendons, the adjacent reinforcing bar or FRP
Spacing between muscle is 100mm~200mm.
In some exemplary embodiments of the invention, positioner (7) is fixed with the steel bridge deck (4), it is described fixed
Position device (7) is in X-shaped, " Ψ " shape or " Π " shape in vertical plane；Positioner (7) is evenly arranged in the horizontal plane, cloth
It is 500mm~2000mm to put spacing；The mesh sheet (6) is by being fixed at the top of positioner (7), for controlling mesh sheet (6)
Position.
In some exemplary embodiments of the invention, the material of the cement-based material basic unit (1) includes cement, fine coal
Ash, silica flour, swelling agent, water reducer, fine sand, fiber and water, wherein, the mass percent of Shui Zhan cement-based materials basic unit (1) is
14%~18%；Fiber includes vinal and steel fibre, and the total volume of the two is cement-based material basic unit (1) cumulative volume
1.00%~2.50%, the volume ratio of vinal and steel fibre is 3: 1；A diameter of the 0.04 of vinal~
0.05mm, length are 10~15mm, tensile strength is R1 >=1500MPa, modulus of elasticity is E1 >=35GPa；Steel fibre is using plating
Copper steel fiber or stainless steel steel fibre, a diameter of 0.18~0.25mm of steel fibre, length are 10~15mm, tensile strength R2
>=2200MPa, modulus of elasticity are E2 >=210GPa.
In some of the invention exemplary embodiments, 28 days compression strength R of the cement-based material basic unit (1) >=
70MPa, ultimate tensile strength δ >=1.2%, maximum crack width Δ≤0.2mm, dry within 28 days and shrink the μ ε of s≤300, live cold mixing,
Normal temperature conserves.
In some exemplary embodiments of the invention, the water-proof tack coat (2) is uniformly abound with cement-based material basic unit
(1) top surface；The water-proof tack coat (2) uses asphaltum with high viscosity, and 60 DEG C of dynamic viscosities are v >=60000Pas；It is described anti-
Water tack coat (2) surface heat spreads round shaped grain shape rubble, and the round shaped grain shape ballast grain sizes are 5~10mm；Asphalt surface course (3) laying
Above water-proof tack coat, using high elasticity modified asphalt.
Another aspect of the present invention provides a kind of construction method of the low drying shrinkage cement-based material paving steel bridge deck of ultra-tough, including
Following steps：S1：Shear connector (5) is welded on steel bridge deck (4)；
S2：The apparatus for welding and positioning (7) on steel bridge deck (4)；S3：Mesh sheet (6) is set up above positioner (7)；S4：
The joints cement sill on steel bridge deck (4), it is covered shear connector (5) and mesh sheet (6), form cement-based material base
Layer (1)；S5：Water-proof tack coat (2) is set on the top surface upper berth of cement-based material basic unit (1)；S6：On water-proof tack coat (2) upper berth
If asphalt surface course (3).
In some exemplary embodiments of the invention, also include before the step S1：Steel bridge deck (4) surface is sprayed
Sand derusts；Also include between the step S2 and step S3：To steel bridge deck (4) and the welding position and Steel Bridge Deck of weldering nail
The welding position of plate (4) and positioner (7) carries out anticorrosive coating.
(3) beneficial effect
1st, cement-based material bridge deck pavement structure provided by the invention and its construction method, using the ultra-toughness of excellent performance
Property the low high-strength engineered cementitious sill of drying shrinkage, can effectively control critical eigenvalue width and cracking form, bituminous sheaths can be effectively isolated
Layer bears harsh temperature action because directly contacting steel bridge deck, can form " steel-engineered cementitious base material with steel bridge deck
Material " combining structure shared road vehicles load, using asphaltum with high viscosity water-proof tack coat, adhesive property is good, and with anti-
Water and the extension of prevention cement-based material basic crack and the function such as reflection, therefore the temperature stability of the deck installation structure upwards
Good, good endurance, and can effectively lift the fatigue behaviour of steel bridge deck；
2nd, cement-based material bridge deck pavement structure provided by the invention and its construction method, cement-based material basic unit use
Live cold mixing, normal temperature maintenance, easy for construction, good economy performance.
Brief description of the drawings
Fig. 1 is the schematic diagram of the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough of the embodiment of the present invention.
Fig. 2 is that the weldering nail of the embodiment of the present invention and reinforced mesh arrange schematic diagram.
Fig. 3 is the construction method flow chart of the low drying shrinkage cement-based material paving steel bridge deck of ultra-tough of the embodiment of the present invention.
Reference：
1- cement-based materials basic unit；2- water-proof tack coats；3- asphalt surface courses；4- steel bridge decks；5- shear connectors；6- nets
Piece；7- positioners.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail.
First embodiment of the invention provides a kind of ultra-tough low drying shrinkage cement-based material bridge deck pavement structure, and Fig. 1 is this
The low drying shrinkage cement-based material bridge deck pavement structure schematic diagram of ultra-tough of inventive embodiments, as shown in figure 1, the structure from lower and
On include：Cement-based material basic unit (1), water-proof tack coat (2) and asphalt surface course (3).
Cement-based material basic unit (1) is laid on the top of steel bridge deck (4), and passes through shear connector (5) and Steel Bridge Deck
Plate (4) is connected, and at least one layer of mesh sheet (6) is provided with the cement-based material basic unit (1).
Water-proof tack coat set (2) between cement-based material basic unit (1) and asphalt surface course (3), for ensure both it
Between effective bonding, and with waterproof and prevent cement-based material basic unit (1) crack extend and upwards reflection etc. function.
Below in conjunction with accompanying drawing 1 and accompanying drawing 2 respectively to the low drying shrinkage cement-based material paving steel bridge deck of the ultra-tough of the present embodiment
Each part of structure is described in detail.
The thickness of cement-based material basic unit (1) is 45~70mm, and the thickness of water-proof tack coat (2) is 2~6mm, bituminous sheaths
The thickness of layer (3) is 30~50mm.
Shear connector (5) is followed closely from weldering, and multiple weldering nails are weldingly fixed on steel bridge deck (4) vertically, and are cast in water
The inside of cement-based material basic unit (1), weld nail a diameter of 8mm~13mm, highly for 35~55mm, weldering nail be evenly arranged, it is adjacent
Spacing between weldering nail is 100~300mm, and the height for welding nail is smaller 10~15mm than the thickness of cement-based material basic unit (1).
1~2 layer of fine and closely woven reinforcing bar or FRP (Fiber Reinforced is disposed with cement-based material basic unit (1)
Polymer/Plastic, fibre reinforced composites) muscle mesh sheet (6), mesh sheet (6) is vertically and horizontally to be arranged above and below in " well " shape
Reinforcing bar or FRP tendons formed by welding or colligation, more transversely arranged reinforcing bars or FRP tendons are fixed on more of longitudinal arrangement
" well " shape grid is formed on reinforcing bar or FRP tendons.Reinforcing bar or the diameter of FRP tendons are preferably 6mm or 8mm, adjacent reinforcing bar or FRP tendons it
Between spacing be 100mm~200mm.
Positioner (7) is welded with steel bridge deck (4), mesh sheet (6) is by welding or banding fixed in steel bridge deck (4)
At the top of the positioner (7) of upper welding, for controlling the position of mesh sheet (6).The material of positioner (7) is steel, and it is perpendicular
Determined into plane in X-shaped, " Ψ " shape or " Π " shape, its height by the design attitude of mesh sheet；Positioner (7) is in horizontal plane
Inside vertically and horizontally it is evenly arranged, level interval is 500mm~2000mm.
The material of cement-based material basic unit (1) include cement, flyash, silica flour, swelling agent, water reducer, fine sand, fiber and
Water.Wherein, the mass percent of Shui Zhan cement-based materials basic unit (1) be 14%~18%, fiber include vinal and
Steel fibre, the total volume of the two are the 1.00%~2.50% of cement-based material basic unit (1) cumulative volume, vinal and steel
The volume ratio of fiber is 3: 1；A diameter of 0.04~0.05mm of vinal, length are 10~15mm, tensile strength is
R1 >=1500MPa, modulus of elasticity are E1 >=35GPa；Steel fibre uses copper facing steel fibre or stainless steel steel fibre, steel fibre it is straight
Footpath is 0.18~0.25mm, length is 10~15mm, tensile strength is R2 >=2200MPa, modulus of elasticity is E2 >=210GPa.
28 days compression strength R >=70MPa of cement-based material basic unit (1), ultimate tensile strength δ >=1.2%, corresponding maximum
Crack width Δ≤0.2mm, dry within 28 days and shrink the μ ε of s≤300, live cold mixing, normal temperature maintenance.
Water-proof tack coat (2) is uniformly abound with the top surface of cement-based material basic unit (1)；
Water-proof tack coat (2) uses asphaltum with high viscosity, 60 DEG C of dynamic viscosity v >=60000Pas, water-proof tack coat (2) table
Face heat spreads round shaped grain shape rubble, and round shaped grain shape ballast grain sizes are preferably 5~10mm.
Asphalt surface course (3) is laid on above water-proof tack coat (2), using high elasticity modified asphalt, such as SMA10 or SMA13
Deng.
Second embodiment of the invention provides a kind of construction method of the low drying shrinkage cement-based material paving steel bridge deck of ultra-tough, figure
3 be the low drying shrinkage cement-based material paving steel bridge deck construction method flow chart of ultra-tough of the embodiment of the present invention, as shown in figure 3, bag
Include following steps：
S1：Shear connector (5) is welded on steel bridge deck (4)
Shear connector (5) is followed closely using weldering in the present embodiment, is welded and is followed closely in steel bridge deck (4) surface soldered, and weldering nail is vertical
It is fixed on steel bridge deck (4), welds the diameter 8mm~13mm, 35~55mm of height, 100~300mm of spacing of nail.Weldering nail and steel
The welding of floorings (4) should carry out qualification of welding procedure, and its result should meet the existing regulation about standard of country.
S2：The apparatus for welding and positioning (7) on steel bridge deck (4)
The material of positioner (7) is steel, and it is in X-shaped, " Ψ " shape or " Π " shape in vertical plane, its height by
The design attitude of mesh sheet determines.Positioner (7) is welded on steel bridge deck (4) vertically, positioner (7) is in the horizontal plane
Vertically and horizontally it is evenly arranged, level interval is 500mm~2000mm.
S3：Mesh sheet (6) is set up above positioner (7)
Fine and closely woven reinforcing bar or FRP tendons mesh sheet (6) are set up above the positioner (7) of steel bridge deck (4), mesh sheet (6) is logical
The mode for crossing welding or colligation is fixed at the top of the positioner (7) welded on steel bridge deck (4).
S4：The joints cement sill on steel bridge deck (4), it is covered shear connector and mesh sheet, form cement base
Material base layer (1).
Joints cement sill on the steel bridge deck of shear connector and mesh sheet is installed above-mentioned, connects its covering shearing
Fitting and mesh sheet, cement-based material basic unit (1) is formed, cement-based material basic unit (1) thickness is 45~70mm, and the height is at least big
In the height 1cm of weldering nail, the requirement of its material performance index：28 days axial compressive strength R >=70MPa, ultimate tensile strength δ >=
1.5%, corresponding maximum crack width Δ≤0.2mm, dry within 28 days and shrink the μ ε of s≤300, live cold mixing, normal temperature maintenance.
S5：Water-proof tack coat (2) is set on the top surface upper berth of cement-based material basic unit (1)
Water-proof tack coat (2) is uniformly abound with the top surface of cement-based material basic unit (1), while in water-proof tack coat (2) table
Face heat spreads round shaped grain shape rubble, and particle diameter preferably uses 5~10mm.
Water-proof tack coat (2) thickness is 2~6mm, using asphaltum with high viscosity, 60 DEG C of dynamic viscosity v >=60000Pas, is protected
Hinder effective bonding between cement-based material basic unit (1) and asphalt surface course (3).
S6：Asphalt surface course (3) is laid on water-proof tack coat (2)
The thickness of asphalt surface course 3 is 30~50mm, the high elasticity modified asphalt being modified using SBS, such as SMA10 or SMA13, with
SMA13 is optimal.
In some embodiments of the invention, also include before step S1：Steel bridge deck (4) surface sand-blasting is derusted.
Derusting by sandblasting is carried out to the surface of steel bridge deck 4, its cleannes is reached steel surface processing (GB before coating coating
Sa2.5 levels as defined in 8923.1-2011), roughness reach 50~1001 μm.
In some embodiments of the invention, also include between step S2 and step S3：Steel bridge deck (4) and weldering are followed closely
Welding position and the welding position of steel bridge deck (4) and positioner (7) carry out anticorrosive coating.
According to《Highway bridge steel structure anticorrosive coating technical conditions》(JTT722-2008) relevant regulations are to Steel Bridge Deck top
Plate, weldering nail and positioner cause the destroyed position of its anticorrosive coating to carry out anticorrosive coating because of welding.
Above example can be seen that the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough provided by the invention and
Construction method, using the high-strength engineered cementitious sill of the low drying shrinkage of the ultra-tough of excellent performance, can effectively control critical eigenvalue width and
Ftracture form, can be effectively isolated asphalt surface course because directly contact steel bridge deck bear harsh temperature action, can and steel
Floorings form " steel-engineered cementitious sill " combining structure shared road vehicles load, therefore the deck installation structure
Temperature stability is good, good endurance, and can effectively lift the fatigue behaviour of steel bridge deck；Ultra-tough provided by the invention is low
The cement-based material basic unit of the high-strength engineered cementitious sill bridge deck pavement structure of drying shrinkage is conserved using live cold mixing, normal temperature, is applied
Work is convenient, good economy performance.
It should also be noted that, the shape and size of each part do not reflect actual size and ratio in figure, and only illustrate this
The content of inventive embodiments.Unless there are known entitled phase otherwise anticipate, the numerical parameter in this specification and appended claims is
Approximation, can be according to the required characteristic changing as obtained by present disclosure.Specifically, it is all be used in specification and
The numeral of content, the reaction condition of composition etc. is represented in claim, it is thus understood that be by " about " in all situations
Term is modified.Generally, its expression implication refer to comprising by specific quantity in certain embodiments ± 10% change
Change, in certain embodiments ± 5% change, in certain embodiments ± 1% change, in certain embodiments ± 0.5%
Change.
Furthermore word "comprising" does not exclude the presence of part not listed in the claims or step.Before part
Word "a" or "an" does not exclude the presence of multiple such parts.
In addition, unless specifically described or the step of must sequentially occur, the order of above-mentioned steps, which has no, is limited to above institute
Row, and can change or rearrange according to required design.And above-described embodiment can based on design and reliability consideration, that
This mix and match uses using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with independent assortment
Form more embodiments.
Similarly, it will be appreciated that in order to simplify the present invention and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the invention should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is less than all features of single embodiment above invented.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., the protection of the present invention should be included in
Within the scope of.
Claims (10)
1. a kind of low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough, includes successively from bottom to top：Cement-based material base
Layer (1), water-proof tack coat (2) and asphalt surface course (3), wherein,
The cement-based material basic unit (1) is laid on steel bridge deck (4), and passes through shear connector (5) and steel bridge deck
(4) connect, at least one layer of mesh sheet (6) is provided with the cement-based material basic unit (1)；
The water-proof tack coat (2) is arranged between cement-based material basic unit (1) and asphalt surface course (3), for ensure both it
Between effective bonding, and with waterproof and prevent cement-based material basic unit (1) crack from extending and the function that reflects upwards.
2. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein,
The thickness of the cement-based material basic unit (1) is 45~70mm；
The thickness of the water-proof tack coat (2) is 2~6mm；
The thickness of the asphalt surface course (3) is 30~50mm.
3. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein,
The shear connector (5) is followed closely for weldering, and multiple weldering nails are fixed on steel bridge deck (4) vertically, and are cast in cement matrix
Expect that basic unit (1) is internal；
A diameter of 8mm~13mm of the weldering nail, is highly 35~55mm, and the spacing between adjacent weldering nail is 100~300mm,
The height for welding nail is smaller 10~15mm than the thickness of cement-based material basic unit (1).
4. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein,
The mesh sheet (6) is by being in vertically and horizontally that the reinforcing bar that is arranged above and below of " well " shape or FRP tendons are formed by welding or colligation；
The a diameter of 6mm or 8mm of the reinforcing bar or FRP tendons, spacing between the adjacent reinforcing bar or FRP tendons for 100mm~
200mm。
5. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein, the Steel Bridge Deck
Positioner (7) is fixed with plate (4), the positioner (7) is in X-shaped, " Ψ " shape or " Π " shape in vertical plane；
Positioner (7) is evenly arranged in the horizontal plane, and arrangement spacing is 500mm~2000mm；
The mesh sheet (6) is by being fixed at the top of positioner (7), for controlling the position of mesh sheet (6).
6. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein, the cement base
The material of material base layer (1) includes cement, flyash, silica flour, swelling agent, water reducer, fine sand, fiber and water, wherein,
The mass percent of Shui Zhan cement-based materials basic unit (1) is 14%~18%；
Fiber includes vinal and steel fibre, and the total volume of the two is cement-based material basic unit (1) cumulative volume
1.00%~2.50%, the volume ratio of vinal and steel fibre is 3: 1；A diameter of the 0.04 of vinal~
0.05mm, length are 10~15mm, tensile strength is R1 >=1500MPa, modulus of elasticity is E1 >=35GPa；Steel fibre is using plating
Copper steel fiber or stainless steel steel fibre, a diameter of 0.18~0.25mm of steel fibre, length are 10~15mm, tensile strength R2
>=2200MPa, modulus of elasticity are E2 >=210GPa.
7. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 6, wherein, the cement base
28 days compression strength R >=70MPa of material base layer (1), ultimate tensile strength δ >=1.2%, maximum crack width Δ≤0.2mm, 28
It, which is dried, shrinks the μ ε of s≤300, live cold mixing, normal temperature maintenance.
8. the low drying shrinkage cement-based material bridge deck pavement structure of ultra-tough according to claim 1, wherein,
The water-proof tack coat (2) is uniformly abound with the top surface of cement-based material basic unit (1)；
The water-proof tack coat (2) uses asphaltum with high viscosity, and 60 DEG C of dynamic viscosities are v >=60000Pas；
Water-proof tack coat (2) surface heat spreads round shaped grain shape rubble, and the round shaped grain shape ballast grain sizes are 5~10mm；
The asphalt surface course (3) is laid on above water-proof tack coat, using high elasticity modified asphalt.
9. a kind of construction method of the low drying shrinkage cement-based material paving steel bridge deck of ultra-tough, comprises the following steps：
S1：Shear connector (5) is welded on steel bridge deck (4)；
S2：The apparatus for welding and positioning (7) on steel bridge deck (4)；
S3：Mesh sheet (6) is set up above positioner (7)；
S4：The joints cement sill on steel bridge deck (4), it is covered shear connector (5) and mesh sheet (6), form cement
Sill basic unit (1)；
S5：Water-proof tack coat (2) is set on the top surface upper berth of cement-based material basic unit (1)；
S6：Asphalt surface course (3) is laid on water-proof tack coat (2).
10. the construction method of the low drying shrinkage cement-based material paving steel bridge deck of ultra-tough according to claim 1, wherein,
Also include before the step S1：Steel bridge deck (4) surface sand-blasting is derusted；
Also include between the step S2 and step S3：To steel bridge deck (4) and the welding position and steel bridge deck of weldering nail
(4) and positioner (7) welding position carry out anticorrosive coating.
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| CN111877157A (en) * | 2020-07-31 | 2020-11-03 | 武汉理工大学 | Synergistic shearing-resistant high-durability section steel bridge deck pavement structure and construction method thereof |
| CN111893878A (en) * | 2020-09-08 | 2020-11-06 | 中交一公局重庆万州高速公路有限公司 | Steel box girder bridge deck pavement structure and construction method |
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