CN217922892U - Steel bridge face pouring type asphalt concrete pavement structure - Google Patents
Steel bridge face pouring type asphalt concrete pavement structure Download PDFInfo
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- CN217922892U CN217922892U CN202221541876.3U CN202221541876U CN217922892U CN 217922892 U CN217922892 U CN 217922892U CN 202221541876 U CN202221541876 U CN 202221541876U CN 217922892 U CN217922892 U CN 217922892U
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Abstract
The utility model provides a steel bridge face pouring type asphalt concrete structure of mating formation, including steel bridge face, anticorrosive waterproof layer, pouring type asphalt concrete layer, bond line and surface course, anticorrosive waterproof layer sets up on the steel bridge face, and pouring type asphalt concrete layer sets up on anticorrosive waterproof layer, and the bond line sets up on pouring type asphalt concrete layer, and the surface course sets up on the bond line. Preferably, the anti-corrosion waterproof layer comprises an anti-corrosion layer, a lower waterproof layer, an upper waterproof layer and a bonding layer. The adhesive layer is a modified emulsified asphalt layer. The surface layer is a high-elastic modified asphalt layer. The gravel is positioned between the bonding layer and the cast asphalt concrete layer and is embedded in the bonding layer and the cast asphalt concrete layer respectively. The utility model discloses a steel bridge face pouring type asphalt concrete pavement stable in structure, waterproof nature and durability are good, design benefit, and the structure is succinct, and the construction is simple and convenient, and is with low costs, is suitable for extensive popularization and application.
Description
Technical Field
The utility model relates to a building engineering technical field, in particular to steel bridge deck pavement structure technical field specifically indicates a steel bridge deck pouring type asphalt concrete pavement structure.
Background
At present, the disease condition of the asphalt pavement layer of the steel bridge deck in China can be summarized into rutting, cracking, bond coat damage, delamination or peeling through investigation and summary, and the rutting of the pavement layer is the main disease type of the pavement layer of the steel bridge deck in China. In the bridges with the damaged pavement layers, nearly 80 percent of the pavement layers of the steel bridge deck of the bridges generate ruts with different degrees. The pavement layer of the steel bridge deck is caused by insufficient permanent deformation resistance of the asphalt mixture of the pavement layer under the action of bearing vehicle loads (including multiplied traffic volume increase, heavy load, overload, slow running and canalized traffic) in high-temperature seasons or for a long time.
The cast asphalt concrete is a special asphalt mixture which can be paved, leveled and molded by self fluidity without rolling and has small void ratio. The cast asphalt concrete belongs to the field of suspended dense asphalt aggregate. The material has the following properties due to the structural characteristics: (1) self-flow; (2) water-tight property; and (3) cracking resistance. The pouring asphalt aggregate is compact and waterproof, has good durability, strong adaptive deformability and excellent toughness, has good adaptability to the deformation of a steel bridge deck, and is particularly suitable for pavement of a surface layer of the steel bridge deck.
The cast asphalt concrete has higher site construction temperature than that of conventional asphalt, the construction temperature is 220-250 ℃, the cast asphalt concrete expands with heat and contracts with cold on a steel bridge surface with higher temperature sensitivity, the influence on an anticorrosive waterproof layer is larger, the performance of the cast asphalt concrete is higher, and whether the asphalt performance of the surface layer can synchronously act is also the test on the durability of the cast asphalt concrete.
Therefore, it is desirable to provide a steel bridge deck pouring type asphalt concrete pavement structure which is stable in structure and good in waterproofness and durability.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming among the above-mentioned prior art, an object of the utility model is to provide a steel bridge face pouring type asphalt concrete structure of mating formation, its stable in structure, waterproof nature and durability are good, are suitable for extensive popularization and application.
Another object of the utility model is to provide a steel bridge face pouring type asphalt concrete structure of mating formation, its design benefit, the structure is succinct, and the construction is simple and convenient, and is with low costs, is suitable for extensive popularization and application.
For reaching above purpose, the utility model provides a steel bridge face pouring type asphalt concrete structure of mating formation, including the steel bridge face, its characteristics are, steel bridge face pouring type asphalt concrete structure of mating formation still includes anticorrosive waterproof layer, pouring type asphalt concrete layer, bond line and surface course, anticorrosive waterproof layer sets up on the steel bridge face, pouring type asphalt concrete layer sets up on the anticorrosive waterproof layer, the bond line sets up on the pouring type asphalt concrete layer, the surface course sets up on the bond line.
Preferably, the steel deck is a steel box girder steel deck.
Preferably, the anticorrosive waterproof layer comprises an anticorrosive layer, a lower waterproof layer, an upper waterproof layer and an adhesive layer, the anticorrosive layer is arranged on the steel bridge deck, the lower waterproof layer is arranged on the anticorrosive layer, the upper waterproof layer is arranged on the lower waterproof layer, the adhesive layer is arranged on the upper waterproof layer, and the cast asphalt concrete layer is arranged on the adhesive layer.
Preferably, the anticorrosive coating is an acrylic acid anticorrosive paint layer, the lower waterproof layer and the upper waterproof layer are methacrylic acid resin layers, and the bonding layer is an acrylic acid resin binder layer.
Preferably, the thickness of the cast asphalt concrete layer is 4cm.
Preferably, the adhesive layer is a modified emulsified asphalt layer.
Preferably, the surface layer is a high-elasticity modified asphalt layer.
Preferably, the thickness of the facing layer is 3.8cm.
Preferably, the steel bridge surface cast asphalt concrete pavement structure further comprises broken stones, and the broken stones are located between the bonding layer and the cast asphalt concrete layer and are respectively embedded in the bonding layer and the cast asphalt concrete layer.
More preferably, the particle size of the crushed stone is 5 mm-10 mm.
The beneficial effects of the utility model mainly lie in:
1. the utility model discloses a steel bridge face pouring type asphalt concrete structure of mating formation includes steel bridge face, anticorrosive waterproof layer, pouring type asphalt concrete layer, bond line and surface course, and anticorrosive waterproof layer sets up on the steel bridge face, and pouring type asphalt concrete layer sets up on anticorrosive waterproof layer, and the bond line setting is on pouring type asphalt concrete layer, and the surface course sets up on the bond line, consequently, its stable in structure, and waterproof nature and durability are good, are suitable for extensive popularization and application.
2. The utility model discloses a steel bridge face pouring type asphalt concrete pavement structure includes steel bridge face, anticorrosive waterproof layer, pouring type asphalt concrete layer, bond line and surface course, and anticorrosive waterproof layer sets up on the steel bridge face, and pouring type asphalt concrete layer sets up on anticorrosive waterproof layer, and the bond line sets up on pouring type asphalt concrete layer, and the surface course sets up on the bond line, consequently, its design benefit, and the structure is succinct, and the construction is simple and convenient, and is with low costs, is suitable for extensive popularization and application.
These and other objects, features and advantages of the present invention will be fully apparent from the following detailed description and appended drawings, and may be realized by means of the instrumentalities, devices and combinations particularly pointed out in the specification.
Drawings
Fig. 1 is a schematic cross-sectional view of a specific embodiment of the steel bridge deck pouring type asphalt concrete pavement structure of the present invention.
Fig. 2 is a front sectional view of the anti-corrosive and waterproof layer of the embodiment shown in fig. 1.
(symbol description)
1, a steel bridge deck; 2, an anticorrosion waterproof layer; 3, pouring an asphalt concrete layer; 4 an adhesive layer; 5 surface layer; 6, an anticorrosive layer; 7, a waterproof layer; 8, a waterproof layer is arranged; 9 bonding layers.
Detailed Description
In order to clearly understand the technical contents of the present invention, the following embodiments are specifically illustrated in detail.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Please refer to fig. 1-2 in a specific embodiment of the present invention, the utility model discloses a steel bridge deck pouring type asphalt concrete pavement structure includes steel bridge deck 1, anticorrosive waterproof layer 2, pouring type asphalt concrete layer 3, bond line 4 and surface course 5, anticorrosive waterproof layer 2 sets up on the steel bridge deck 1, pouring type asphalt concrete layer 3 sets up on anticorrosive waterproof layer 2, bond line 4 sets up on pouring type asphalt concrete layer 3, surface course 5 sets up on bond line 4.
The steel deck 1 may be any suitable steel deck, and in a specific embodiment of the present invention, the steel deck 1 is a steel box girder steel deck. Before the anti-corrosion waterproof layer 2 is arranged, the steel bridge deck 1 needs to be subjected to sand blasting and rust removing treatment, so that the requirements of 'treatment of steel surface before coating' (GB/T18838) are met.
The anti-corrosion waterproof layer 2 mainly plays the role of anti-corrosion and waterproof, and can have any suitable structure, please refer to fig. 2, in a specific embodiment of the present invention, the anti-corrosion waterproof layer 2 includes an anti-corrosion layer 6, a lower waterproof layer 7, an upper waterproof layer 8 and an adhesive layer 9, the anti-corrosion layer 6 is disposed on the steel bridge deck 1, the lower waterproof layer 7 is disposed on the anti-corrosion layer 6, the upper waterproof layer 8 is disposed on the lower waterproof layer 7, the adhesive layer 9 is disposed on the upper waterproof layer 8, and the cast asphalt concrete layer 3 is disposed on the adhesive layer 9.
The corrosion protection layer 6 may be any suitable corrosion protection layer, and in a specific embodiment of the present invention, the corrosion protection layer 6 is an acrylic acid corrosion protection paint layer.
The lower waterproof layer 7 with the upper waterproof layer 8 can be any suitable waterproof layer, in a specific embodiment of the utility model, the lower waterproof layer 7 with the upper waterproof layer 8 is a methacrylic resin layer.
The adhesive layer 9 may be any suitable adhesive layer, and in a specific embodiment of the present invention, the adhesive layer 9 is an acrylic adhesive layer.
The thickness of pouring type asphalt concrete layer 3 can be confirmed as required in the embodiment of the utility model, the thickness of pouring type asphalt concrete layer 3 is 4cm.
The adhesive layer 4 may be any suitable adhesive layer, and in a specific embodiment of the present invention, the adhesive layer 4 is a modified emulsified asphalt layer.
The facing 5 may be any suitable facing, and in a specific embodiment of the present invention, the facing 5 is a high-elastic modified asphalt layer, which may be formed of, for example, high-elastic modified asphalt SMA-13.
The thickness of surface course 5 can be confirmed as required, in the utility model discloses a specific embodiment, the thickness of surface course 5 is 3.8cm.
The steel bridge face pouring type asphalt concrete pavement structure can also include any other suitable constitutions in the utility model discloses a specific embodiment, steel bridge face pouring type asphalt concrete pavement structure still includes the rubble (not shown in the figure), the rubble is located bond line 4 with inlay respectively between the pouring type asphalt concrete layer 3 and establish bond line 4 with in the pouring type asphalt concrete layer 3. With the above arrangement, a better adhesion with the above adhesive layer 4 is ensured by spreading crushed stone on the poured asphalt concrete layer 3.
The particle size of the crushed stone can be determined according to needs, and more preferably, the particle size of the crushed stone is 5-10 mm. In a specific embodiment of the present invention, the crushed stone has a particle size of 8mm.
The utility model discloses a work progress brief follows:
1. sand blasting rust removal of steel bridge surface
Surface treatment → cleaning → sand blasting and rust removing → sanding → cleaning → detection and acceptance.
2. Construction of anti-corrosion and water-proof layer
Acrylic acid anticorrosive paint → methacrylic acid resin (two layers) → spraying acrylic acid resin binder → acceptance of coating film → detection and acceptance.
3. Pouring type asphalt concrete layer construction
Pouring asphalt concrete construction → spreading pre-mixed macadam → detection → repair → inspection and acceptance.
4. Bond coat construction
Modified emulsified asphalt construction → detection → repair → inspection and acceptance.
5. Surface layer construction
Mixing with asphalt concrete mixer → vehicle transportation → paving with paver → compacting → road surface forming detection → inspection after self-inspection is qualified.
The steel bridge surface 1 is subjected to sand blasting and rust removing construction, a grinding tool is firstly used for flattening the defects of sharp edges, splashing, unsmooth welding seams and the like on the surface of the steel bridge surface 1, whether oil stains, water stains and the like exist on the steel bridge surface 1 or not is observed, and if yes, the steel bridge surface 1 needs to be cleanedAnd (4) cleaning. After the sand blasting rust removal inspection is qualified, for example, the acrylic acid anticorrosive paint is manually rolled and coated within 4 hours, the acrylic acid anticorrosive paint is fully and uniformly stirred before construction, the anticorrosive layer 6 is uniformly coated, defects such as missing coating, cracking, falling, needle holes and bubbles are timely repaired, construction workers wear shoe covers to avoid pollution to a base surface, the contact of the anticorrosive layer 6 before surface drying is forbidden, rain, water immersion and other impurity pollution are avoided before actual drying, and the using amount of the acrylic acid anticorrosive paint is 100g/m for example 2 ～200g/m 2 . After curing, a layer of methacrylic resin is applied in two layers, the total amount being, for example, 2500g/m 2 ～3500g/m 2 And spraying the next layer after each layer is coated for 1 hour. The amount of acrylic resin binder used is, for example, 100g/m 2 ～200g/m 2 Complete curing was possible within about 1h (23 ℃). After the curing, the pouring type asphalt concrete construction can be carried out; in the cast asphalt concrete construction, the broken stones are spread by manual spreading, for example, 4Kg/m, following the cast asphalt concrete spreader 2 ～7Kg/m 2 And rolling by using an iron roller to embed the lower part of the premixed macadam into the cast asphalt concrete. After the pouring type asphalt concrete construction is finished, manually cleaning and sweeping the broken stones which are not firmly adhered. During the construction of the modified emulsified asphalt, the surface of the cast asphalt concrete layer is ensured to be clean, and the modified emulsified asphalt is uniformly sprayed, for example, the amount of the modified emulsified asphalt is 300g/m 2 ～500g/m 2 And embedding the upper part of the premixed macadam into the modified emulsified asphalt, and then performing high-elasticity modified asphalt SMA-13 construction.
The utility model discloses compare with other steel bridge deck pavement structures at present, the structure is more stable, and waterproof nature and durability are better.
To sum up, the utility model discloses a steel bridge face pouring type asphalt concrete pavement stable in structure, waterproof nature and durability are good, design benefit, and the structure is succinct, and the construction is simple and convenient, and is with low costs, is suitable for extensive popularization and application.
Therefore, the purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments may be modified without departing from the principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the claims.
Claims (10)
1. The utility model provides a steel bridge face pouring type asphalt concrete structure of mating formation, includes the steel bridge face, its characterized in that, steel bridge face pouring type asphalt concrete structure of mating formation still includes anticorrosive waterproof layer, pouring type asphalt concrete layer, bond line and surface course, anticorrosive waterproof layer sets up on the steel bridge face, pouring type asphalt concrete layer sets up on the anticorrosive waterproof layer, the bond line sets up on the pouring type asphalt concrete layer, the surface course sets up on the bond line.
2. The steel deck poured asphalt concrete pavement structure according to claim 1, wherein the steel deck is a steel box girder steel deck.
3. The steel bridge deck poured asphalt concrete pavement structure according to claim 1, wherein the anti-corrosion waterproof layer comprises an anti-corrosion layer, a lower waterproof layer, an upper waterproof layer and an adhesive layer, the anti-corrosion layer is disposed on the steel bridge deck, the lower waterproof layer is disposed on the anti-corrosion layer, the upper waterproof layer is disposed on the lower waterproof layer, the adhesive layer is disposed on the upper waterproof layer, and the poured asphalt concrete layer is disposed on the adhesive layer.
4. The cast asphalt concrete pavement structure for steel bridge surfaces according to claim 3, wherein the anti-corrosion layer is an acrylic anti-corrosion paint layer, the lower waterproof layer and the upper waterproof layer are both methacrylic resin layers, and the bonding layer is an acrylic resin adhesive layer.
5. The steel deck cast asphalt concrete pavement structure according to claim 1, wherein the thickness of the cast asphalt concrete layer is 4cm.
6. The steel deck poured asphalt concrete pavement structure according to claim 1, wherein the bonding layer is a modified emulsified asphalt layer.
7. The steel deck poured asphalt concrete pavement structure according to claim 1, wherein the surface layer is a high-elasticity modified asphalt layer.
8. The steel deck poured asphalt concrete pavement structure according to claim 1, wherein the thickness of the surface layer is 3.8cm.
9. The steel deck poured asphalt concrete pavement structure according to claim 1, further comprising crushed stones, the crushed stones being located between the adhesive layer and the poured asphalt concrete layer and embedded in the adhesive layer and the poured asphalt concrete layer, respectively.
10. The steel deck poured asphalt concrete pavement structure according to claim 9, wherein the crushed stone has a particle size of 5mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541876.3U CN217922892U (en) | 2022-06-20 | 2022-06-20 | Steel bridge face pouring type asphalt concrete pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541876.3U CN217922892U (en) | 2022-06-20 | 2022-06-20 | Steel bridge face pouring type asphalt concrete pavement structure |
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| Publication Number | Publication Date |
|---|---|
| CN217922892U true CN217922892U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221541876.3U Active CN217922892U (en) | 2022-06-20 | 2022-06-20 | Steel bridge face pouring type asphalt concrete pavement structure |
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| CN (1) | CN217922892U (en) |
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- 2022-06-20 CN CN202221541876.3U patent/CN217922892U/en active Active
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