CN208293416U - Ultra-high performance concrete bridge deck pavement structure - Google Patents
Ultra-high performance concrete bridge deck pavement structure Download PDFInfo
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- CN208293416U CN208293416U CN201820617050.8U CN201820617050U CN208293416U CN 208293416 U CN208293416 U CN 208293416U CN 201820617050 U CN201820617050 U CN 201820617050U CN 208293416 U CN208293416 U CN 208293416U
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- Prior art keywords
- high performance
- ultra
- performance concrete
- bridge deck
- layer
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 100
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 102
- 239000012790 adhesive layer Substances 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 11
- 238000005336 cracking Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 abstract description 26
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 239000004574 high-performance concrete Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004590 silicone sealant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a kind of ultra-high performance concrete bridge deck pavement structure, is layed on steel bridge deck, and the ultra-high performance concrete bridge deck pavement structure includes epoxy resin layer, ultra-high performance concrete layer and several shear connectors.Each shear connector is fixed on the steel bridge deck；The epoxy resin layer is layed on the steel bridge deck；The ultra-high performance concrete layer is layed on the epoxy resin layer, and the ultra-high performance concrete layer internal shaping has several deformation joints being extended along the steel bridge deck width direction；It enables each deformation joint that the ultra-high performance concrete layer is separated into several ultra-high performance concrete layers respectively to be segmented, each shear connector is arranged along the corresponding steel bridge deck of each ultra-high performance concrete layer segmented peripheral edge respectively.The utility model eliminates steel bar stress net in ultra-high performance concrete layer, and reduce the quantity of shear connector, reduces the influence to concrete construction and maintenance to greatest extent by rationally designing.
Description
Technical field
The utility model relates to technical field of building construction, relate in particular to a kind of ultra-high performance concrete steel deck paving
Assembling structure.
Background technique
In recent years, ultra-high performance concrete is applied in bridge deck pavement structure due to its excellent mechanical property,
Pavement thickness can not only be reduced, reduce bridge deck weight, moreover it is possible to improve bridge deck local stiffness, extension is mated formation and steel bridge deck
Fatigue life.
In existing Steel Bridge Deck ultra-high performance concrete is mated formation, to realize paving structure and steel bridge deck entirety stress,
Using the interlayer connection type for the shear connector that gathers between pave-load layer and steel bridge deck.Densely arranged shear connector not only can be to superelevation
The construction of performance concrete pave-load layer brings inconvenience, and can greatly increase the maintenance difficulty between follow-up policy.
In existing Steel Bridge Deck ultra-high performance concrete is mated formation, since there are biggish temperature, shrinkage stress, often mixed
The a large amount of densely arranged steel bar stress net of configuration in solidifying soil pave-load layer, bar spacing is less than 100mm.Due to very-high performance coagulation
For native plasticity generally not as good as normal concrete, densely covered steel mesh considerably increases the difficulty of construction of ultra-high performance concrete layer,
And may cause and pour leakiness, seriously affect the molding that ultra-high performance concrete layer is especially slim ultra-high performance concrete layer
Quality causes potential threat to the service performance of paving structure.
Therefore, the case where paving steel bridge deck being applied to for ultra-high performance concrete, existing interlayer connection type and close
The steel mesh of cloth will cause the construction of ultra-high performance concrete and maintenance difficulty increases, and construction quality is difficult to ensure, to knot of mating formation
The service performance of structure causes potential threat, is unfavorable for large-scale promotion application of the ultra-high performance concrete in paving steel bridge deck.
Utility model content
In view of the foregoing, the utility model provides a kind of ultra-high performance concrete bridge deck pavement structure, to Steel Bridge Deck
Plate connect the complex method using local shear key and epoxy bonds with the interlayer of ultra-high performance concrete layer, and not only connection can
It leans on, and because shear connector setting is less, the influence to concrete construction and late maintaining can be reduced to greatest extent.Meanwhile this
Utility model is eliminated the steel bar stress net in ultra-high performance concrete layer, is not only mentioned by construction measures such as setting deformation joints
The ultra-high performance concrete construction of high overall economy quality, also great convenience, ensure that ultra-high performance concrete layer is especially
The Forming Quality of slim ultra-high performance concrete layer has good Long-Term Properties.
To achieve the above object, the technical scheme adopted by the utility model is that: a kind of ultra-high performance concrete steel bridge is provided
Face paving structure, is layed on steel bridge deck, the ultra-high performance concrete bridge deck pavement structure include: several shear connectors,
Epoxy resin layer and ultra-high performance concrete layer.The lower end of each shear connector is fixed on the steel bridge deck；The epoxy
Resin layer is layed on the steel bridge deck；The ultra-high performance concrete layer is layed on the epoxy resin layer, described super
Several deformation joints extended along the width direction of the steel bridge deck are formed with inside high performance concrete layer；It enables each described
The ultra-high performance concrete layer is separated into several ultra-high performance concrete layers respectively and is segmented by deformation joint, each shear connector point
It is not arranged along the corresponding steel bridge deck of each ultra-high performance concrete layer segmented peripheral edge.
The utility model ultra-high performance concrete bridge deck pavement structure further improvement lies in that, the epoxy resin layer
Including adhesive layer and waterproof layer, the waterproof layer is layed on the steel bridge deck, the adhesive layer be set to the waterproof layer with
Between the ultra-high performance concrete layer.
The utility model ultra-high performance concrete bridge deck pavement structure further improvement lies in that, inside the deformation joint
Equipped with elaxtic seal.
The utility model ultra-high performance concrete bridge deck pavement structure further improvement lies in that, the very-high performance is mixed
It is equipped with anti-cracking cloth above solidifying soil layer, the anti-cracking cloth lid sets the top of the deformation joint.
The utility model ultra-high performance concrete bridge deck pavement structure it is further improvement be, the very-high performance
Also be covered with wearing course above concrete layer, the anticracking be arranged in the wearing course and the ultra-high performance concrete layer it
Between.
The utility model ultra-high performance concrete bridge deck pavement structure further improvement lies in that, adjacent two shearing
Spacing range between key is 200mm~400mm.
The utility model ultra-high performance concrete bridge deck pavement structure further improvement lies in that, the steel bridge deck
Lower section is provided with spaced diaphragm plate, and the interval between the deformation joint and the diaphragm plate is not less than adjacent two cross
The a quarter of the spacing of partition, the spacing range between adjacent two deformation joint are 20m~120m.
The utility model due to use above technical scheme, make it have it is following the utility model has the advantages that
(1) answering using local shear key and epoxy bonds is connect with the interlayer of ultra-high performance concrete layer to steel bridge deck
Conjunction mode, not only connection is reliable, but also because shear connector setting is less, can reduce and support to concrete construction and later period to greatest extent
The influence of shield.
(2) the utility model eliminates very-high performance coagulation in the conventional technology by construction measures such as setting deformation joints
The steel bar stress net being arranged in soil layer, not only increases overall economy quality, goes back great convenience concrete construction, ensure that super
High performance concrete layer is especially the Forming Quality of slim ultra-high performance concrete layer, has good Long-Term Properties.
(3) epoxy resin layer includes adhesive layer and waterproof layer, and waterproof layer is layed on steel bridge deck, for protecting Steel Bridge Deck
Plate is not by extraneous water erosion；Adhesive layer be set between waterproof layer and ultra-high performance concrete layer, by ultra-high performance concrete layer with
Steel bridge deck bonding is integral.
(4) elaxtic seal is filled in deformation joint, can discharged in ultra-high performance concrete layer because temperature, contraction are equivalent
The additional force that should be generated, and can protect steel bridge deck not by extraneous water erosion.
(5) compared with traditional technology, deformation joint is set in the ultra-high performance concrete layer of the utility model, without configuring steel
Muscle makes ultra-high performance concrete bridge deck pavement structure oneself so that the design thickness of concrete can reduce according to actual needs
It further decreases again, realizes the lightness of ultra-high performance concrete bridge deck pavement structure, and be conducive to improve entire bridge
The force-bearing situation of structure.
Detailed description of the invention
Fig. 1 is local overlooking structural representation when ultra-high performance concrete bridge deck pavement structure is mated formation in the utility model
Figure.
Fig. 2 is schematic cross-sectional view at A-A in the utility model Fig. 1.
Fig. 3 is schematic cross-sectional view at B-B in the utility model Fig. 1.
Drawing reference numeral explanation:
Epoxy resin layer 10；Adhesive layer 11；Waterproof layer 12；Ultra-high performance concrete layer 20；Ultra-high performance concrete layer point
Section 21；Shear connector 30；Deformation joint 40；Elaxtic seal 50；Anti-cracking cloth 60；Wearing course 70；Diaphragm plate 80；Steel bridge deck 90.
Specific embodiment
For the benefit of to the understanding of the utility model, it is illustrated with reference to the accompanying drawings and embodiments.
It please refers to Fig.1 to Fig.3, the utility model provides a kind of ultra-high performance concrete bridge deck pavement structure, is layed in
On steel bridge deck 90, the ultra-high performance concrete bridge deck pavement structure includes: epoxy resin layer 10, ultra-high performance concrete
Layer 20 and several shear connectors 30.Wherein:
As shown in Figures 2 and 3, the lower end of each shear connector 30 is fixed on steel bridge deck 90；Particularly, it adjacent two cuts
Spacing range between power key 30 is 200mm~400mm, and shear connector 30 is at a distance from steel bridge deck pane edge and deformation joint 40
100mm~300mm, such interval setting, makes the setting negligible amounts of shear connector 30, can reduce to greatest extent to concrete
The influence of construction and late maintaining.
In a preferred embodiment of the utility model, the shear connector 30 can be but be not limited to shear stud, U-shaped steel
Muscle, PBL shear connector and bar dowel, it is preferable that shear connector 30 uses shear stud, and but it is not limited to this, can be according to practice of construction
Situation is adjusted.
As shown in Figures 2 and 3, the epoxy resin layer 10 is layed on steel bridge deck 90；Specifically, epoxy resin layer 10
Including adhesive layer 11 and waterproof layer 12, waterproof layer 12 is layed on steel bridge deck 90, and adhesive layer 11 is set to waterproof layer 12 and superelevation
Between performance concrete layer 20.Particularly, the thickness of waterproof layer 12 can be 0.2mm~0.7mm, for protecting steel bridge deck 90 not
By extraneous water erosion；The thickness of adhesive layer 11 can be 0.5mm~1mm, and ultra-high performance concrete layer 20 and steel bridge deck 90 are glued
Form for entirety.
In a preferred embodiment of the utility model, the epoxy resin layer 10 can be condensed by epoxy resin,
The epoxy resin presetting period is not less than 2h under room temperature.
As shown in Figures 2 and 3, the ultra-high performance concrete layer 20 is layed on epoxy resin layer 10.Such as Fig. 1 and Fig. 3
It is shown, several deformation joints extended along the width direction of steel bridge deck 90 are formed with inside ultra-high performance concrete layer 20
40, it should be noted that the width direction of steel bridge deck 90 is the width of ultra-high performance concrete layer 20 in Fig. 1 in the utility model
Spend direction.By the way that deformation joint 40 is arranged, the steel bar stress being arranged in ultra-high performance concrete layer 20 in traditional technology is eliminated
Net not only increases overall economy quality, also great convenience concrete construction, ensure that ultra-high performance concrete layer 20 at
Type quality has good Long-Term Properties；Preferably, as shown in figures 1 and 3, elastic packing is equipped with inside deformation joint 40
Material 50 can discharge the additional force generated in ultra-high performance concrete layer 20 by effects such as temperature, contractions and protect steel bridge
Panel 90 is not by extraneous water erosion；Further, as shown in figures 1 and 3, anticracking is equipped with above ultra-high performance concrete layer 20
Cloth 60, anti-cracking cloth 60 are covered within the scope of 40 each 1m of top opposite sides of deformation joint；Further, as shown in Figures 2 and 3,
20 top of ultra-high performance concrete layer is also covered with wearing course 70, and anti-cracking cloth 60 is placed in wearing course 70 and ultra-high performance concrete layer
Between 20.
Enable each deformation joint 40 that ultra-high performance concrete layer 20 is separated into several ultra-high performance concrete layers point respectively
Section 21, each shear connector 30 are segmented on the corresponding steel bridge deck 90 of 21 circumferential edges along each ultra-high performance concrete layer are respectively set respectively
2~3 rows.
In a preferred embodiment of the utility model, ultra-high performance concrete layer 20 can be poured by ultra-high performance concrete
It builds, the ultra-high performance concrete refers to that this is super containing reinforcing fiber and without the cement concrete of coarse aggregate in component
The axial tensile strength of high performance concrete is not less than 7MPa, and elasticity modulus is not less than 30GPa.
In a preferred embodiment of the utility model, elaxtic seal 50 can be but be not limited to silicone sealing
Glue, polyurethanes sealant and polysulfide class sealant, it is preferable that elaxtic seal 50 uses silicone sealant, but simultaneously
It is without being limited thereto, it can be adjusted according to practice of construction situation.
In a preferred embodiment of the utility model, anti-cracking cloth 60 can be Fibergrass polyester mat, and but it is not limited to this, can
It is adjusted according to practice of construction situation.
Further, the lower section of the steel bridge deck 90 is provided with spaced diaphragm plate 80, deformation joint 40 and tabula
Interval between plate 80 is not less than a quarter of the spacing of adjacent two diaphragm plate 80.Specifically, between adjacent two deformation joint 40
It is 20m~120m, long, the seam Gao Yuchao of deformation joint 40 identical as the width size of steel bridge deck 90 of the seam of deformation joint 40 away from range
The high size of the layer of high performance concrete layer 20 is identical, and the slit width range of deformation joint 40 is 5mm~15mm.
The construction method of the utility model ultra-high performance concrete bridge deck pavement structure, comprising:
Steel bridge deck 90 is handled, impeller blasting processing is carried out to the top surface of steel bridge deck 90；
Positioning transformations seam 40, as shown in Figure 1, determining the position of each deformation joint 40 according to Specific construction situation first, then
Isolation board (not shown) is respectively set in the position location of each deformation joint 40, and the isolation board is fixed on steel bridge deck 90
On；
Construction shear connector 30, in 2~3 row's shear connectors 30 are respectively set in the circumferential edges of steel bridge deck 90, in each deformation joint
2~3 row's shear connectors 30 are respectively set in the opposite sides of 40 position location；
Construction epoxy resin layer 10 and ultra-high performance concrete layer 20, as shown in Figures 2 and 3, epoxy resin layer 10 includes
Waterproof layer 12 and adhesive layer 11, brushwork epoxy resin is solid to waterproof layer 12 to form waterproof layer 12 first on steel bridge deck 90
After chemical conversion type, then on waterproof layer 12 according to the position location brushwork epoxy resin of deformation joint 40 to form adhesive layer 11, when one
Section adhesive layer 11 brush after the completion of, immediately on the adhesive layer 11 casting concrete to form ultra-high performance concrete layer 20, to
After the completion of this section of ultra-high performance concrete layer 20 pours, then next section of adhesive layer 11 is brushed, promoted according to this, until completing all viscous
Tie the construction of layer 11 and ultra-high performance concrete layer 20；
Deformation joint 40 is handled, as shown in figure 3, taking the isolation board after ultra-high performance concrete layer 20 all molding
Out, then deformation joint 40 is effectively cleared up, fills elaxtic seal 50, and be laid with anti-cracking cloth 60 at the top of deformation joint 40；
Wearing course 70 of constructing carries out roughening processing in the top surface of ultra-high performance concrete layer 20, so as shown in Figures 2 and 3
Wearing course 70 is laid with above ultra-high performance concrete layer 20 afterwards, completes the utility model ultra-high performance concrete paving steel bridge deck
The construction of structure.
In the processing steel bridge deck of the construction method of the utility model ultra-high performance concrete bridge deck pavement structure, to
Impeller blasting after treatment, should also check the cleannes and roughness of steel bridge deck 90 immediately, cleannes reach Sa2.5 grades with
On, roughness should be in 40 μm~100 μm.
In the construction shear connector of the construction method of the utility model ultra-high performance concrete bridge deck pavement structure, shearing
Key 30 is not less than 20mm at a distance from 90 splicing welding joint of steel bridge deck.
Compared with traditional technology, deformation joint 40 is set, without configuring in the ultra-high performance concrete layer 20 of the utility model
Reinforcing bar makes ultra-high performance concrete bridge deck pavement structure so that the design thickness of concrete can reduce according to actual needs
Self weight further decreases, and realizes the lightness of ultra-high performance concrete bridge deck pavement structure, and is conducive to improve entire bridge
The force-bearing situation of girder construction.
Combine accompanying drawings and embodiments that the utility model is described in detail above, those skilled in the art can
Many variations example is made to the utility model according to the above description.Thus, certain details in embodiment should not be constituted to this reality
With novel restriction, the utility model will be using the range that the appended claims define as the protection scope of the utility model.
Claims (7)
1. a kind of ultra-high performance concrete bridge deck pavement structure, is layed on steel bridge deck, which is characterized in that the superelevation
Can concrete steel bridge surface paving structure include:
The lower end of several shear connectors, each shear connector is fixed on the steel bridge deck；
Epoxy resin layer, the epoxy resin layer are layed on the steel bridge deck；
Ultra-high performance concrete layer, the ultra-high performance concrete layer are layed on the epoxy resin layer, the very-high performance
Several deformation joints extended along the width direction of the steel bridge deck are formed with inside concrete layer；
It enables each deformation joint that the ultra-high performance concrete layer is separated into several ultra-high performance concrete layers respectively to be segmented, respectively
The shear connector is arranged along the corresponding steel bridge deck of each ultra-high performance concrete layer segmented peripheral edge respectively.
2. ultra-high performance concrete bridge deck pavement structure according to claim 1, which is characterized in that the epoxy resin
Layer includes adhesive layer and waterproof layer, and the waterproof layer is layed on the steel bridge deck, and the adhesive layer is set to the waterproof layer
Between the ultra-high performance concrete layer.
3. ultra-high performance concrete bridge deck pavement structure according to claim 1, which is characterized in that in the deformation joint
Portion is equipped with elaxtic seal.
4. ultra-high performance concrete bridge deck pavement structure according to claim 1, which is characterized in that the very-high performance
It is equipped with anti-cracking cloth above concrete layer, the anti-cracking cloth lid sets the top of the deformation joint.
5. ultra-high performance concrete bridge deck pavement structure according to claim 4, which is characterized in that the very-high performance
Also be covered with wearing course above concrete layer, the anticracking be arranged in the wearing course and the ultra-high performance concrete layer it
Between.
6. ultra-high performance concrete bridge deck pavement structure according to claim 1, which is characterized in that cut described in adjacent two
Spacing range between power key is 200mm~400mm.
7. ultra-high performance concrete bridge deck pavement structure according to claim 1, which is characterized in that the steel bridge deck
Lower section be provided with spaced diaphragm plate, the interval between the deformation joint and the diaphragm plate is not less than described in adjacent two
The a quarter of the spacing of diaphragm plate, the spacing range between adjacent two deformation joint are 20m~120m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820617050.8U CN208293416U (en) | 2018-04-27 | 2018-04-27 | Ultra-high performance concrete bridge deck pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820617050.8U CN208293416U (en) | 2018-04-27 | 2018-04-27 | Ultra-high performance concrete bridge deck pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208293416U true CN208293416U (en) | 2018-12-28 |
Family
ID=64703725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820617050.8U Withdrawn - After Issue CN208293416U (en) | 2018-04-27 | 2018-04-27 | Ultra-high performance concrete bridge deck pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208293416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589518A (en) * | 2018-04-27 | 2018-09-28 | 上海市市政规划设计研究院有限公司 | Ultra-high performance concrete bridge deck pavement structure and its construction method |
| CN110468708A (en) * | 2019-07-31 | 2019-11-19 | 中铁大桥科学研究院有限公司 | A kind of combined bridge deck structure and its construction method of steel-UHPC prefabricated board |
-
2018
- 2018-04-27 CN CN201820617050.8U patent/CN208293416U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589518A (en) * | 2018-04-27 | 2018-09-28 | 上海市市政规划设计研究院有限公司 | Ultra-high performance concrete bridge deck pavement structure and its construction method |
| CN108589518B (en) * | 2018-04-27 | 2024-03-12 | 上海市市政规划设计研究院有限公司 | Super-high-performance concrete steel bridge deck pavement structure and construction method thereof |
| CN110468708A (en) * | 2019-07-31 | 2019-11-19 | 中铁大桥科学研究院有限公司 | A kind of combined bridge deck structure and its construction method of steel-UHPC prefabricated board |
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Granted publication date: 20181228 Effective date of abandoning: 20240312 |
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Granted publication date: 20181228 Effective date of abandoning: 20240312 |