CN112482213A - Rigid pavement structure of combined steel bridge deck and construction method thereof - Google Patents
Rigid pavement structure of combined steel bridge deck and construction method thereof Download PDFInfo
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- CN112482213A CN112482213A CN202011422735.5A CN202011422735A CN112482213A CN 112482213 A CN112482213 A CN 112482213A CN 202011422735 A CN202011422735 A CN 202011422735A CN 112482213 A CN112482213 A CN 112482213A
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- bridge deck
- steel bridge
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- steel
- pavement structure
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 49
- 239000002131 composite material Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 240000008042 Zea mays Species 0.000 claims abstract description 21
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 21
- 239000008262 pumice Substances 0.000 claims abstract description 20
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 239000010902 straw Substances 0.000 claims abstract description 16
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 7
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 19
- 235000005822 corn Nutrition 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000006467 substitution reaction Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000010422 painting Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000007761 roller coating Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 4
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 abstract 2
- 235000009973 maize Nutrition 0.000 abstract 2
- 239000011518 fibre cement Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge engineering, in particular to a rigid pavement structure of a combined steel bridge deck and a construction method thereof. This combination steel bridge face rigid pavement structure includes steel bridge deck board, net protective layer, glued layer and ECC material layer, the steel bridge deck board is tooth's socket shaped steel bridge deck board, the steel bridge deck board upper berth is equipped with the net protective layer, the net protective layer adopts maize straw pumice composite concrete, cover the wire net check on the maize straw pumice composite concrete, the glued layer is laid to net protective layer top, the glued layer is low molecular 650 polyamide resin for bond upper and lower layer, the ECC material layer is laid to the glued layer top, the ECC material layer is PVA fibre cement based composite. The invention solves the problem that the rigidity of the bridge deck is greatly reduced due to the cracking of the pavement layer, and prolongs the service life of the bridge.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a rigid pavement structure of a combined steel bridge deck and a construction method thereof.
Background
Under the background of the era of rapid economic development, a plurality of large-span bridges are built in China. In the existing steel bridge deck pavement structure, more than eight asphalt concrete pavement layers are formed. Because the improvement of the rigidity of the steel bridge deck system by the asphalt mixture pavement layer is limited, the steel bridge deck system is in a high stress amplitude state under the action of a traveling load, the local stress and the deformation of the pavement layer are large, and the pavement layer material positioned in the hogging moment area at the top of the longitudinal U-shaped stiffening rib is easy to generate the fatigue cracking phenomenon. The pavement layer cracks directly to cause the rigidity of the bridge deck system to be greatly reduced, the local stress and the crack width are further increased, and the service life of the bridge is seriously influenced. Engineering practices show that once a pavement layer cracks, the damage of a bridge deck pavement system is only a time problem.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a combined steel bridge deck rigid pavement structure and a construction method, wherein a steel bridge deck, a grid protective layer, a cementing layer and an ECC material layer are combined, so that the shearing resistance of a bridge deck system is effectively improved, the deflection of the bridge deck system is reduced, the strength, the rigidity, the toughness and the durability of the bridge deck system are further enhanced, the service life of a bridge is prolonged, and a large amount of cost is saved.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a combination steel bridge floor rigidity structure of mating formation, includes steel bridge deck slab, steel bridge deck slab is tooth's socket shaped steel bridge deck slab, net protective layer, glued layer, ECC material layer have been laid in proper order on the steel bridge deck slab.
Further, the thickness of the steel bridge deck plate is 1-500 mm.
Further, the steel bridge deck is made of Q235 carbon steel.
Further, the net protective layer adopts corn stalk pumice composite concrete, the corn stalk pumice composite concrete is used for filling the gap of tooth's socket type steel decking, cover the wire net check on the corn stalk pumice composite concrete.
Furthermore, the corn straw pumice composite concrete comprises cement, fly ash, pumice particles, river sand, a high-efficiency water reducing agent and water, wherein the pumice particles are replaced by the massive corn straws with a volume substitution rate of 10-30%; the fibrous corn stalks replace river sand by a volume substitution rate of 10 to 30 percent.
Further, the cementing layer is made of low-molecular 650 polyamide resin material, and the dosage of the low-molecular 650 polyamide resin is 0.29-0.39kg/m2。
Further, the ECC material layer is a PVA fiber cement-based composite material.
A construction method of a rigid pavement structure of a combined steel bridge deck comprises the following steps:
s1, prefabricating a 7m multiplied by 7m square tooth groove type steel bridge deck in a prefabrication factory, and pulling the steel bridge deck to a construction site by using a flat car;
s2, installing and positioning longitudinal ribs on the corresponding top plate on the tooth groove type steel bridge deck plate by using an assembling machine, and completing fillet weld welding between the longitudinal ribs and the corresponding top plate by using a multi-head gantry welding machine on the hydraulic reverse deformation sub-ship-shaped welding swing jig;
s3, flat welding the cross beam and the steel bridge deck slab by using CO2Gas protection;
s4, performing sand blasting, cleaning and drying on the steel bridge deck plate, and spraying paint;
s5, paving a grid protective layer on the steel bridge deck;
s6, painting a cementing material on the grid protective layer, and ensuring that the roller coating is uniform to form a cementing layer;
and S7, laying an ECC material layer on the cementing layer.
The invention has the beneficial effects that: the tooth groove structure has good shearing resistance, and can effectively resist the shearing stress generated between a steel bridge deck pavement layer and a steel bridge deck at the lower part by the service braking of a vehicle on the bridge deck; the corn straws are mixed into the concrete, so that the low-temperature cracking property of the concrete can be effectively improved, the steel wire meshes can disperse the load, the bottom layer tooth socket section steel is protected, and the cracking resistance and the low-temperature stability of the pavement structure are improved; the cementing layer is low molecular 650 polyamide resin, which has the function of waterproof protection; the ECC material layer is made of a PVA fiber cement-based composite material, so that the tensile property, the toughness, the crack control capability and the durability of the structure can be improved, and the shearing resistance of the steel bridge deck pavement layer is greatly improved by combining with the tooth-groove profile steel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an overall schematic view of a rigid pavement structure of a combined steel bridge deck
FIG. 2 is a schematic cross-sectional view of a rigid pavement structure of a combined steel bridge deck
FIG. 3 is a schematic view of the welding of the cross beams and longitudinal ribs of the rigid pavement structure of a combined steel bridge deck
1-ECC material layer, 2-cementing layer, 3-grid protective layer, 4-steel bridge deck, 41-steel plate tooth space, 5-longitudinal rib and 6-cross beam
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1
A combined steel bridge deck rigid pavement structure comprises a steel bridge deck 4, wherein the steel bridge deck 4 is a tooth-space steel bridge deck, the steel bridge deck 4 is made of Q235 carbon steel, the thickness of the steel bridge deck 4 is 14mm, the tooth space interval is 50mm, the height of the steel bridge deck is 20mm, the width of the steel bridge deck is 20mm, a grid protective layer 3 is paved on the steel bridge deck 4, the grid protective layer 3 is made of corn straw pumice composite concrete, the corn straw pumice composite concrete is used for filling gaps of the tooth-space steel bridge deck, a layer of steel wire meshes covers the corn straw pumice composite concrete, the mixing ratio of the corn straw pumice composite concrete is cement, coal ash, pumice particles, river sand, a high-efficiency water reducing agent, water, the volume substitution rate of 1: 0.43: 1.26: 1.11: 0.008: 0.58, the water-cement ratio is 0.41, and massive corn straws are used for substituting for the pumice particles by the volume substitution rate of 10% -30%, the fibrous corn straws replace river sand by the volume substitution rate of 10-30 percent;
the grid protective layer 3 is paved with a cementing layer 2, the cementing layer 2 is low molecular 650 polyamide resin, and the specific dosage is 0.29-0.39kg/m2；
An ECC material layer 1 is laid on the cementing layer 2, the ECC material layer 1 is made of a PVA fiber cement-based composite material, and the material ratio of the PVA fiber cement-based composite material is 378kg/m of cement3880kg/m of I-grade high-calcium fly ash3302kg/m of water3453kg/m of quartz sand31.38kg/m of thickener3Antifoam agent 3.77kg/m35.03kg/m of water reducing agent326kg/m of fiber3Accounting for 2 percent of the total volume.
The construction method of the rigid pavement structure of the combined steel bridge deck comprises the following steps:
1) prefabricating a 7m multiplied by 7m square tooth groove type steel bridge deck 4 in a prefabrication factory, and pulling the steel bridge deck to a construction site by adopting a flat car;
2) on the steel bridge deck 4, longitudinal ribs 5 for positioning are installed on corresponding top plates by using an assembling machine, and fillet weld welding between the longitudinal ribs 5 and the corresponding top plates is completed on a hydraulic reverse deformation sub-ship-shaped welding swing jig by using a multi-head gantry welding machine;
3) the beam 6 and the steel bridge deck 4 are welded flatly and CO is used2Gas protection;
4) carrying out sand blasting, cleaning and drying on the steel bridge deck 4, and spraying paint;
5) paving a grid protective layer 3 on the steel bridge deck 4;
6) painting cementing materials on the grid protective layer 3, and ensuring that the roller painting is uniform to form a cementing layer 2;
7) and laying an ECC material layer 1 on the cementing layer 2.
And (3) test results:
TABLE 1 shear strength τ of each test piece interfacemax(Mpa)
And (3) analyzing test results:
from Table 1, it can be seen that τ increases with the tooth spacing D at different tooth widths B and tooth heights AmaxThe teeth spacing D does not show certain regularity along with the change of the teeth spacing D, because although the teeth spacing D is increased, each test piece of the teeth number within the range of 100mm multiplied by 100mm is 2, the tooth area As is the same, the capability of a steel plate for resisting shearing stress is almost the same, and therefore tau ismaxThe change rule of (a) does not have a certain rule under the influence of other parameters; when the tooth spacing D and the tooth height A are constant, taumaxThe reason why the tooth width B increases as it increases is mainly that the increase of the tooth width B increases the tooth area per unit area of the steel sheet, increases the shear rigidity, and τmaxAnd thus increased; when the tooth space D and the tooth width B are constant, taumaxThe tooth height A shows a remarkable increasing trend, because the steel mass participating in resisting shear stress in the pavement layer in unit volume is increased and the tangential rigidity is increased, taumaxAnd thus increases.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (8)
1. The utility model provides a combination steel bridge floor rigidity structure of mating formation, its characterized in that, includes the steel bridge deck board, the steel bridge deck board is tooth's socket type steel bridge deck board, net protective layer, glued layer, ECC material layer have been laid in proper order on the steel bridge deck board.
2. A composite steel deck rigid pavement structure according to claim 1, wherein said steel deck slab has a thickness of 1-500 mm.
3. The composite steel bridge deck rigid pavement structure according to claim 1, wherein the steel bridge deck is made of Q235 carbon steel.
4. The composite steel bridge deck rigid pavement structure according to claim 1, wherein the grid protection layer is made of corn straw pumice composite concrete, the corn straw pumice composite concrete is used for filling gaps of the gullet-shaped steel bridge deck, and the corn straw pumice composite concrete is covered with steel wire meshes.
5. The composite steel bridge deck rigid pavement structure according to claim 4, wherein the material composition of the corn straw pumice composite concrete comprises cement, fly ash, pumice particles, river sand, a high-efficiency water reducing agent and water, wherein the volume substitution rate of the blocky corn straws is 10-30% for replacing the pumice particles; the fibrous corn stalks replace river sand by a volume substitution rate of 10 to 30 percent.
6. A composite steel bridge deck rigid pavement structure according to claim 1, wherein said cementing layer is low molecular 650 polyamide resin material, and the dosage of said low molecular 650 polyamide resin is 0.29-0.39kg/m2。
7. A composite steel deck rigid pavement structure according to claim 1, wherein said ECC material layer is a PVA fiber cement based composite.
8. A construction method of a rigid pavement structure of a combined steel bridge deck is characterized by comprising the following steps:
s1, prefabricating a 7m multiplied by 7m square tooth groove type steel bridge deck in a prefabrication factory, and pulling the steel bridge deck to a construction site by using a flat car;
s2, installing and positioning longitudinal ribs on the corresponding top plate on the tooth groove type steel bridge deck plate by using an assembling machine, and completing fillet weld welding between the longitudinal ribs and the corresponding top plate by using a multi-head gantry welding machine on the hydraulic reverse deformation sub-ship-shaped welding swing jig;
s3, flat welding the cross beam and the steel bridge deck slab by using CO2Gas protection;
s4, performing sand blasting, cleaning and drying on the steel bridge deck plate, and spraying paint;
s5, paving a grid protective layer on the steel bridge deck;
s6, painting a cementing material on the grid protective layer, and ensuring that the roller coating is uniform to form a cementing layer;
and S7, laying an ECC material layer on the cementing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011422735.5A CN112482213A (en) | 2020-12-08 | 2020-12-08 | Rigid pavement structure of combined steel bridge deck and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011422735.5A CN112482213A (en) | 2020-12-08 | 2020-12-08 | Rigid pavement structure of combined steel bridge deck and construction method thereof |
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| Publication Number | Publication Date |
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| CN112482213A true CN112482213A (en) | 2021-03-12 |
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