CN209412701U - A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement - Google Patents
A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement Download PDFInfo
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- CN209412701U CN209412701U CN201822101672.8U CN201822101672U CN209412701U CN 209412701 U CN209412701 U CN 209412701U CN 201822101672 U CN201822101672 U CN 201822101672U CN 209412701 U CN209412701 U CN 209412701U
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- 239000004567 concrete Substances 0.000 claims abstract description 39
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- 238000003892 spreading Methods 0.000 claims description 20
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000005488 sandblasting Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
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Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement, which is included in bridge surface armor plate surface layer and is successively equipped with retinasphal waterproof antiskid adhesive layer, the first retinasphal adhesive layer, retinasphal concrete cutting optimal, retinasphal water-proof tack coat, the second retinasphal adhesive layer, retinasphal concrete upper layer, retinasphal antiskid finishing coat from bottom to up.The paving structure is constructed at normal temperature, by improving deck paving rigidity, can be reduced vehicular load while guaranteeing old bridge deck paving service performance to the fatigue damage of steel bridge deck, be extended Orthotropic Steel Bridge Deck service life.
Description
Technical field
The present invention relates to a kind of paving structure and construction method for Orthotropic Steel Bridge Deck reinforcement, the paving structures
, by improving deck paving rigidity, vehicular load can be reduced to Steel Bridge Deck while guaranteeing old bridge deck paving service performance
The fatigue damage of plate extends Orthotropic Steel Bridge Deck service life.
Background technique
Large-span steel box girder stayed-cable bridge, the suspension bridge of China's Earlier designs construction mostly use Orthotropic Steel Bridge Deck, bridge
Face paving hazard is mainly bilayer modified asphalt concrete technique, import bilayer epoxy asphalt concrete technology and German pouring type
Asphalt concrete technique three classes.With the increase of use time, many bridge steel box girder orthotropic plates all occur both at home and abroad
Serious fatigue cracking and deck paving damage problem.
Existing highway bridge Orthotropic Steel Bridge Deck, which generates fatigue cracking, mainly the following aspects reason: first is that, early stage
The bridge built, orthotropic plate thickness is partially thin, and top plate general thickness 12~14mm, U rib thickness 6mm, tabula plate thickness only has
8mm, Heavy Traffic condition lower steel plate are easy to produce fatigue cracking；Second is that pave-load layer recognizes the comprehensive function of orthotropic plate
Deficiency ignores its influence to steel plate structure, leads to summer high temperature as just surface functional layer when pave-load layer design-build
Under the conditions of conventional pitch concrete pavement soften rapidly, rigidity, modulus significantly reduce, further increase traffic loading to orthogonal
The fatigue damage of anisotropic steel bridge deck；Third is that due to own material and construction technology, conventional epoxy pavement technique, double
Mat formation interlayer, pave-load layer and steel plate bonded part of layer epoxy easily generates mass defect, induces the badly damaged of pave-load layer.
Summary of the invention
The invention patent is easy to produce Orthotropic Steel Bridge Deck fatigue cracking and deck paving disease for old steel box girder bridge
Harmful problem can meet code requirement guaranteeing deck paving service performance using new type resin asphalt pavement structural system
While, improving paving structure rigidity (dynamic modulus) reduces vehicular load to the fatigue damage of steel bridge deck, extends orthogonal different
Property steel bridge deck service life.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement is successively laid with from bottom to up on bridge surface armor plate surface layer
There are retinasphal waterproof antiskid adhesive layer, the first retinasphal adhesive layer, retinasphal concrete cutting optimal, retinasphal anti-
Water adhesive layer, the second retinasphal adhesive layer, retinasphal concrete upper layer, retinasphal antiskid finishing coat；The tree
Rouge asphalt waterproofing antiskid adhesive layer is uniformly dispensed simultaneously by the first retinasphal cementitious matter for being spread in bridge surface armor plate surface layer with intensive
First metaling composition of the embedded squeezing in the retinasphal concrete cutting optimal lower surface；The retinasphal water-proof tack coat
By the second retinasphal cementitious matter and intensive uniformly spreading and embedded squeezing is in the retinasphal concrete upper layer lower surface
Second metaling composition；The third that the retinasphal antiskid finishing coat is uniformly dispensed by third retinasphal cementitious matter and intensively
Metaling composition.
The first retinasphal cementitious matter/second retinasphal cementitious matter spreading amount is 1.0~1.2kg/ ㎡.
First metaling/second metaling is 3~5mm of partial size, spreading amount is 2.5~3.5kg/ ㎡ rubble.It is described
Second metaling is also possible to for 8~12mm of rubble and partial size that 3~5mm of partial size, spreading amount are 2.0~2.5kg/ ㎡, spreading
The rubble that amount is 1.0~2.0kg/ ㎡ forms.The main work of coarse granule rubble is mixed into the retinasphal water-proof tack coat
With being that coarse granule rubble is effectively inserted into retinasphal concrete cutting optimal, shearing strength at intersection, resistant slide ability are further increased.
The coating weight of the third retinasphal cementitious matter be 1.3~1.5kg/ ㎡, the third metaling by partial size 3~
1~2mm of rubble and partial size that 5mm, spreading amount are 2.5~3.5kg/ ㎡, spreading amount are 1.5~2.5kg/ ㎡ rubble composition.
The rubble is diabase/basalt.
Add the rubber grain for having 3~6% in the third retinasphal cementitious matter, the partial size 1 of the rubber grain~
3mm improves the ice-breaking under the effect of ice and snow weather condition wheel by increasing rubber grain in retinasphal antiskid finishing coat
Ability.
Preferably, the raw material of the first retinasphal cementitious matter includes epoxy resin, pitch and MIL 53.MIL is added
53 the first retinasphal cementitious matter, good water-proof effect, adhesive force is strong, and can react with iron rust and be converted to stable complexing
Object is firmly adhered to surface of steel plate, forms protectiveness confining bed, prevents steel plate oxidation corrosion, play the dual work of derusting rust-proofing
With.It is the system with three-dimensional structure being made of trivalent metal chromium, iron, aluminium and equal phthalic acid that this, which is primarily due to MIL 53,
Column dynamic frame material is the nanometer large pore material based on Cr, has excellent adsorption capacity, it and high molecular epoxy resin
Complicated cross-linking reaction occurs, forms spatial network interpenetrating system, the strong retinasphal of homogeneous adsorption capacity can be generated
Cementitious matter.In addition, the MIL 53 with metal ion can be with the Fe on steel plate3+It exchanges, is formed and stablize fine and close chelate,
And it is securely covered on surface of steel plate, so that iron rust be prevented to extend, improve coating stable and compactness, the equal benzene diformazan in MIL 53
Acid can form highly stable complex compound with iron ion in rusty scale, not only enhance the adhesive force of coating, but also rusty scale can be inhibited to grow,
Play the role of stable iron rust.
The MIL 53 can be MIL 53 (Cr), MIL 53 (Fe) or MIL 53 (Al).
Preferably, the MIL 53 accounts for 5%~15% (weight percentage) of the first retinasphal cementitious matter total amount.
Preferably, the second retinasphal cementitious matter/third retinasphal cementitious matter is mixed by two component of A, B, A
Component is epoxy resin and diluent, and B component is the mixture that pitch and curing agent form；Curing agent is amine curing agent and rush
It is formed into agent.After A and two component of B are mixed, the amido in epoxy group and curing agent in epoxy resin is together with more in pitch
Complicated cross-linking and curing reaction occurs together for the substances such as ring BTX aromatics, forms spatial network interpenetrating system, can generate uniformly
The retinasphal cementitious matter of phase.
The construction method of above-mentioned paving structure, includes the following steps:
1. the old bridge floor bituminous concrete of milling first, and surface of steel plate is subjected to derusting by sandblasting processing, cleannes reach
Sa2.5 grades, roughness reaches 80~120 μm；
2. bridge surface armor plate retinasphal waterproof antiskid adhesive layer of constructing:
In spreading the first retinasphal cementitious matter on bridge surface armor plate surface layer after at derusting by sandblasting, spreading amount is 1.0~
1.2kg/ ㎡ uniformly dispenses the first metaling immediately after and forms retinasphal waterproof antiskid adhesive layer；
3. the retinasphal binder of one layer of 0.4~0.6kg/ ㎡ of spread, shape on retinasphal waterproof antiskid adhesive layer
At the first retinasphal adhesive layer；
4. the retinasphal concrete cutting optimal of the one layer of 2.5~4cm thickness that pave, this layer of retinasphal concrete and resin drip
Protrusion the first metaling secure bond embedded squeezing in green waterproof antiskid adhesive layer together, and is formed tightly after retinasphal solidification
Close structure sheaf；
5. the surface of retinasphal concrete cutting optimal is increased roughness, construction depth > using ball blast technique processing
0.3mm；
Cementing in retinasphal concrete cutting optimal one layer of second retinasphal of surface construction after 6. impeller blasting is clean
Material, spreading amount are 1.0~1.2kg/ ㎡, uniformly dispense the second metaling immediately after and form retinasphal water-proof tack coat；
7. the retinasphal binder of one layer of 0.4~0.6kg/ ㎡ of spread forms second on retinasphal water-proof tack coat
Retinasphal adhesive layer；
8. pave one layer of 2.5~4cm thickness retinasphal concrete upper layer, this layer of resin concrete and retinasphal waterproof
Protrusion the second metaling secure bond embedded squeezing in adhesive layer together, and forms tight structure layer after retinasphal solidification；
9. layer surface above aforementioned resin bituminous concrete is carried out Shot Blasting, then moulding resin pitch is anti-on it
Sliding finishing coat, retinasphal cementitious matter coating weight are 1.3~1.5kg/ ㎡, and dispense 3-5mm rubble about 2.5~3.5kg/ ㎡ and
1-2mm rubble about 1.5~2.5kg/ ㎡ rubble, open to traffic after finishing coat health solidification.
Compared with prior art, the present invention has the advantages that orthotropic plate bridge deck paving structure reliable in quality, construction party
Just, Pavement Condition can be effectively ensured, improve deck paving overall stiffness and reinforcing effect is played to weak steel plate.
(1) retinasphal waterproof antiskid adhesive layer is arranged in surface of steel plate, has prevented contact of the road surface moisture with steel plate, thoroughly
It solves surface of steel plate waterproof problem, and passes through basalt/diabase gravel in retinasphal cementitious matter and upper layer retinasphal
The embedded squeezing of concrete, surface dispense retinasphal binder and (only dispense between traditional import epoxy pavement technique both concrete layers
One layer binder is easy to produce viruses free stock in use process), realize the double shield of physics occlusion and chemical bonding, pole
The big ability for improving interface layer and resisting shearing slip deformation.
(2) major advantage of two layers of resin asphalt concrete structure layer is that have good load dispersibility, structural bearing
Power, waterproof, heat insulation.Since retinasphal in concrete and polymeric consolidator crosslink curing reaction, solidfied material
It is solid material that can not be remelted different from asphalt.Not only self-strength and cementitiousness are substantially mentioned than modified pitch
Height, and fundamentally change asphalt and improve the characteristic itself to soften rapidly with temperature.Retinasphal concrete is in height
Rigidity (dynamic modulus) when temperature state compares traditional modified pitch, pouring asphalt concrete greatly improves, and has higher
Structural bearing capacity plays reinforcing effect to weak steel plate, can preferably disperse, reduce heavy-duty vehicle to orthotropic steel bridge deck
The stress amplitude of plate reduces the fatigue damage that steel plate is subject to.
(3) retinasphal concrete structure interlayer use retinasphal waterproof antiskid adhesive layer+retinasphal binder for
It improves interlaminar bonding, waterproof, shear resistance and provides double shield.
(4) traditional import epoxy pavement technique surface texture depth only 0.5mm, the rainy day, there are security risks；Tradition is modified
Asphalt pavement, pouring asphalt pavement surfaces layer, which easily seep water, generates destruction, surface resin pitch antiskid finishing coat, and construction depth is big
(more than 1.2mm), it is impermeable, destruction of the road table moisture to structure sheaf is effectively reduced, while improving travel safety.
Detailed description of the invention
Fig. 1 is overall structure diagram；
1-bridge surface armor plate of title of all parts in figure；2-the first retinasphal cementitious matter；3-the first metaling；
4-the first retinasphal adhesive layer；5-retinasphal concrete cutting optimals；6-the second retinasphal cementitious matter；7-the second
Metaling；8-the second retinasphal adhesive layer；9-retinasphal concrete upper layers；10-third retinasphals are cementing
Material；11-third metalings.
Specific embodiment
Embodiment one:
As shown in Figure 1, a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement, on 1 surface layer of bridge surface armor plate under
It is supreme to be successively equipped with retinasphal waterproof antiskid adhesive layer, the first retinasphal adhesive layer 4, below retinasphal concrete
Layer 5, retinasphal water-proof tack coat, the second retinasphal adhesive layer 8, retinasphal concrete upper layer 9, retinasphal are anti-
Sliding finishing coat；The retinasphal waterproof antiskid adhesive layer is by being spread in the first retinasphal cementitious matter 2 on bridge surface armor plate surface layer
Simultaneously first metaling 3 composition of the embedded squeezing in the retinasphal concrete cutting optimal lower surface is uniformly dispensed with intensive；It is described
Retinasphal water-proof tack coat is by the second retinasphal cementitious matter 6 and intensive uniformly spreading and embedded squeezing is in the retinasphal coagulation
The second metaling 7 composition in native upper layer lower surface；The retinasphal antiskid finishing coat is by third retinasphal cementitious matter
10 form with the third metaling 11 intensively uniformly dispensed.
The first retinasphal cementitious matter, the second retinasphal cementitious matter spreading amount be 1.0~1.2kg/ ㎡；It is described
First metaling, the second metaling spreading amount be 2.5~3.5kg/ ㎡.First metaling, the second metaling be 3~
5mm diabase/basaltic broken stone.The coating weight of the third retinasphal cementitious matter is 1.3~1.5kg/ ㎡, and the third is broken
Building stones are 1.5~2.5kg/ by 1~2mm of rubble and partial size that 3~5mm of partial size, spreading amount are 2.5~3.5kg/ ㎡, spreading amount
㎡ rubble composition.
The first retinasphal cementitious matter is by epoxy resin 20%, diluent 23%, asphalt 40%, MIL 53
(Cr) 5%, curing agent 12% mixes, calculated in weight percent.
The second retinasphal cementitious matter, third retinasphal cementitious matter are mixed by two component of A, B with the weight ratio of 1:1
It forms, component A is the mixture that epoxy resin and diluent are formed with the ratio of 2~1:1 of weight ratio, and B component is for pitch and admittedly
The mixture that agent is formed with the ratio of 4~1:1 of weight ratio.Curing agent is amine curing agent, promotor.
The amine curing agent is Versamid, Mannich base phenolic aldehyde amine, polyetheramine, aromatic amine, 203 modified amines are solid
The either any several arbitrary proportion mixture of one of agent.Promotor is liquid imidazole, tri- (dimethylamino of 2,4,6-
Methyl) one or more of phenol composition.
Embodiment two:
Construction method for one Orthotropic Steel Bridge Deck reinforcement paving structure of embodiment, the specific steps are as follows:
1. the old bridge floor bituminous concrete of milling first, and 1 surface of bridge surface armor plate is subjected to derusting by sandblasting processing, it is desirable that cleaning
Degree reaches Sa2.5 grades, and roughness reaches 120 μm.
2. one layer of 1.1kg/m of spread in one hour after the completion of 1 derusting by sandblasting of bridge surface armor plate processing2First retinasphal is cementing
Material 2.
3. 3~5mm diabase/the basaltic broken stone uniformly dispensed immediately after the completion of 2 spread of the first retinasphal cementitious matter,
Namely first metaling 3, rubble dosage 3.5kg/ ㎡.
4. two days later to 2 health of the first retinasphal cementitious matter solidification, brushing the retinasphal binder of 0.5kg/m2, shape
At the first retinasphal adhesive layer 4.
5. pave one layer of 3.5cm thickness retinasphal concrete cutting optimal 5, this layer of resin concrete and the first retinasphal glue
Protrusion rubble secure bond embedded squeezing in ramming material 2 together, and forms tight structure layer after retinasphal solidification.
6. 5 surface of aforementioned resin the Sub-course Asphalt Concrete is increased roughness using ball blast technique processing, it is desirable that construction
Depth > 0.3mm.
Cementing in retinasphal concrete cutting optimal 5 surface construction, one layer of second retinasphal after 7. impeller blasting is clean
Material 6, spreading amount 1.2kg/ ㎡.
8. 3~5mm diabase/the basaltic broken stone uniformly dispensed immediately after the completion of 6 spread of the second retinasphal cementitious matter,
Namely second metaling 7, rubble dosage 3.5kg/ ㎡.
9. to one layer of 0.4~0.6kg/ of spread in 6 health of the second retinasphal cementitious matter solidification two days later water-proof tack coat
The retinasphal binder of ㎡ forms the second retinasphal adhesive layer 8.
10. pave one layer of 3.5cm thickness retinasphal concrete upper layer 9, this layer of resin concrete and the second retinasphal glue
Protrusion rubble secure bond embedded squeezing in ramming material 6 together, and forms tight structure layer after retinasphal solidification.
9 surface of aforementioned resin bituminous concrete upper layer is subjected to Shot Blasting, in surface construction one after cleaning out
Layer third retinasphal cementitious matter 10, spreading amount 1.5kg/ ㎡.
3~5mm rubble 3.5kg/ ㎡ and 1- are uniformly dispensed after the completion of 10 spread of third retinasphal cementitious matter immediately
2mm rubble 2.5kg/ ㎡.Health solidifies open to traffic two days later.
Method of the invention is of less demanding to construction environment condition, it is not necessary to special construction equipment, harsh technique
It is required that.
The performance of material used in above-described embodiment is as shown in table 1 to table 4.
1 retinasphal cementitious matter main performance of table
| Pilot project | Unit | Technical requirements | Test method |
| Pull strength (70 DEG C) | MPa | ≥3 | ASTM D 638 |
| Shear strength (70 DEG C) | MPa | ≥1 | Oblique scissor test |
| Pull strength (25 DEG C) | MPa | ≥10 | It draws and dials test |
| Refer to dry time (25 DEG C) | h | 10≥t≥1 | Refer to dry method |
| Curing time (25 DEG C) | h | ≤72 | It draws and dials test |
| Elongation at break (25 DEG C) | % | ≥20 | Direct tensile test |
| Breaking strength (25 DEG C) | MPa | ≥10 | Direct tensile test |
| Viscosity | It does not trickle suitable for striking off |
2 diabases of table/basaltic broken stone technical requirements
3 retinasphal concrete gradation of table
The requirement of 4 retinasphal concrete performance of table
| Pilot project | Technical requirements | Test method |
| 3 days Marshall stability kN (70 DEG C) | ≥40 | Hit reality 50 times |
| Flow valuve 0.1mm | 20~40 | T 0702 |
| Hit real voidage % | 0~2 | T 0702 |
| Track dynamic stability/mm (70 DEG C) | ≥20000 | T0719 |
| Remain Marshall stability % | ≥90 | T0790 |
| Tensile Strength Ratio % | ≥90 | T0729 |
| - 10 DEG C of low-temperature bending limiting strain × 10-6 | ≥3000 | T0728 |
| Dynamic modulus MPa (10Hz, 55 DEG C) | ≥3500 | T0738 |
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement, it is characterised in that: bridge surface armor plate surface layer from down toward
On be successively equipped with retinasphal waterproof antiskid adhesive layer, the first retinasphal adhesive layer, retinasphal concrete cutting optimal,
Retinasphal water-proof tack coat, the second retinasphal adhesive layer, retinasphal concrete upper layer, retinasphal antiskid cover
Layer；The retinasphal waterproof antiskid adhesive layer by be spread in bridge surface armor plate surface layer the first retinasphal cementitious matter and it is intensive
It is even to dispense simultaneously first metaling composition of the embedded squeezing in the retinasphal concrete cutting optimal lower surface；The retinasphal is anti-
Water adhesive layer is by the second retinasphal cementitious matter and intensive uniformly spreading and embedded squeezing is under the retinasphal concrete upper layer
The second metaling composition in surface；The retinasphal antiskid finishing coat is uniformly spread by third retinasphal cementitious matter and intensively
The third metaling of cloth forms.
2. a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement according to claim 1, it is characterised in that: institute
Stating the first retinasphal cementitious matter/second retinasphal cementitious matter spreading amount is 1.0~1.2kg/ ㎡.
3. a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement according to claim 2, it is characterised in that: institute
State that the first metaling/second metaling is 3~5mm of partial size, spreading amount is 2.5~3.5kg/ ㎡ rubble.
4. a kind of paving structure for Orthotropic Steel Bridge Deck reinforcement according to claim 1, it is characterised in that: institute
The coating weight for stating third retinasphal cementitious matter is 1.3~1.5kg/ ㎡.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101672.8U CN209412701U (en) | 2018-12-14 | 2018-12-14 | A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101672.8U CN209412701U (en) | 2018-12-14 | 2018-12-14 | A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209412701U true CN209412701U (en) | 2019-09-20 |
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Family Applications (1)
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| CN201822101672.8U Active CN209412701U (en) | 2018-12-14 | 2018-12-14 | A kind of paving structure for Orthotropic Steel Bridge Deck reinforcement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457610A (en) * | 2018-12-14 | 2019-03-12 | 中南安全环境技术研究院股份有限公司 | A kind of paving structure and construction method for Orthotropic Steel Bridge Deck reinforcement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457610A (en) * | 2018-12-14 | 2019-03-12 | 中南安全环境技术研究院股份有限公司 | A kind of paving structure and construction method for Orthotropic Steel Bridge Deck reinforcement |
| CN109457610B (en) * | 2018-12-14 | 2024-03-12 | 中南安全环境技术研究院股份有限公司 | Pavement structure for reinforcing orthotropic steel bridge deck and construction method |
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