CN216339027U - Combined type steel bridge deck pavement structure - Google Patents
Combined type steel bridge deck pavement structure Download PDFInfo
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- CN216339027U CN216339027U CN202122835051.4U CN202122835051U CN216339027U CN 216339027 U CN216339027 U CN 216339027U CN 202122835051 U CN202122835051 U CN 202122835051U CN 216339027 U CN216339027 U CN 216339027U
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Abstract
The utility model discloses a composite steel bridge deck pavement structure which is sequentially provided with an epoxy zinc-rich paint anti-corrosion layer, a thermosetting resin waterproof bonding layer, a high-strength broken stone anti-shearing layer, a fiber concrete rigidity compensation layer, a high-temperature mixing type epoxy asphalt concrete layer, a permeable resin bonding layer and a resin broken stone wearing layer from bottom to top. The paving structure can reduce the dead load of the bridge, and the thermosetting resin waterproof bonding layer has good waterproof performance; the high-strength broken stone shear resistant layer is adopted, so that the shear-resistant pushing capacity of the epoxy paving layer can be effectively improved; the high-performance concrete rigidity compensation layer can effectively relieve the stress concentration phenomenon of the steel bridge deck under the action of load and has the function of improving the rigidity of the bridge deck system; the epoxy asphalt concrete which is more matched with the rigidity of the steel bridge deck is adopted, so that the relative deformation among different structures can be reduced, and the epoxy pavement layer has high strength and good durability; and the permeable resin is adopted, so that the bonding effect can be improved, and the integrity of the pavement structure is enhanced.
Description
Technical Field
The utility model relates to pavement of a structure for roads and bridges, in particular to a composite steel bridge deck pavement structure.
Background
The system of mating formation of bridge floor not only can disperse the concentrated load of vehicle, can avoid the wearing and tearing to the decking when the decking receives the vehicle load moreover to the erosion of rainwater to bridge has been avoided. However, with the increase of traffic volume and the increase of heavy-duty vehicles, the problem of bridge deck pavement damage is more and more serious, and the damage of bridge deck pavement seriously affects the driving safety of the vehicles.
At present, the steel bridge deck pavement generally adopts asphalt concrete, the mainstream pavement structure system has double-layer homogeneous pavement and double-layer heterogeneous pavement, and the mainstream pavement materials comprise epoxy asphalt concrete, cast asphalt concrete and asphalt mastic concrete. Under the comprehensive action of environmental factors and driving loads, diseases of different degrees begin to appear after a plurality of steel bridge decks are paved on a vehicle for one or two years. In addition, considering that as the service time of the in-service bridge increases, under the long-term action of the natural environment and the continuous increase of traffic, many bridges are aged and damaged gradually, and the strength of the material is dissipated, so that the bearing capacity is degraded. In the paving resetting engineering, a paving structure which can reduce the dead load of a bridge, has good durability and is easy to maintain is searched for.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the paving structure which can effectively reduce the dead load of the bridge, improve the durability and is easy to maintain.
The paving structure adopts the thermosetting resin waterproof bonding layer, can ensure the bonding effect of the paving layer and the steel bridge deck and has good waterproof performance; the high-strength broken stone shear resistant layer is adopted, so that the shear-resistant pushing capacity of the epoxy paving layer can be effectively improved; the fiber concrete rigidity compensation layer can effectively relieve the stress concentration phenomenon of the steel bridge deck under the action of load and has the function of improving the rigidity of the bridge deck system; the epoxy asphalt concrete which is more matched with the rigidity of the steel bridge deck is adopted, so that the relative deformation among different structures can be reduced, and the epoxy pavement layer has high strength and good durability; the permeable resin is adopted, so that the bonding effect can be improved, and the integrity of a paving structure is enhanced; by adopting the resin gravel wearing layer, the skid resistance of the pavement can be improved, the driving safety is ensured, and the later maintenance and replacement are easy.
The utility model discloses a composite steel bridge deck pavement structure, and the total thickness is controlled to be 42-75 mm. The high-strength steel bridge deck is characterized in that an epoxy zinc-rich paint anticorrosive layer, a thermosetting resin waterproof bonding layer, a high-strength broken stone shearing resistant layer, a fiber concrete rigidity compensation layer, a high-temperature mixing type epoxy asphalt concrete layer, a permeable resin bonding layer and a resin broken stone wearing layer are sequentially arranged on the upper surface of the steel bridge deck from bottom to top.
Preferably, the thickness of the epoxy zinc-rich paint anticorrosive layer is 60-100 μm, and more preferably 70-95 μm.
Preferably, the thickness of the thermosetting resin waterproof bonding layer is 0.45-0.5 mm, and the coating weight is 0.45-0.5 kg/m2。
Preferably, the high-strength broken stone shear-resistant layer broken stone is 3-15 mm basalt broken stone. The thickness is 3-15 mm, the spreading amount of the broken stones is 50-80% of the full spreading amount,
preferably, the high-performance concrete used for the fiber concrete rigidity compensation layer comprises the following components: 25-30 parts of Portland cement, 6-10 parts of silica fume, 8-12 parts of quartz powder, 30-35 parts of quartz sand with the particle size of less than or equal to 1mm, 8-12 parts of water, 1-2 parts of polycarboxylic acid high-efficiency water reducing agent, 2-4 parts of composite chopped steel fiber and 4-8 parts of basalt fiber. The thickness of the high-performance concrete rigidity compensation layer is 10-15 mm.
Preferably, the aggregate of the high-temperature mixing type epoxy asphalt concrete layer is basalt aggregate and limestone mineral powder. The cementing agent is prepared from an epoxy resin additive and SBS modified asphalt, wherein the dosage of the epoxy resin is as follows: the dosage of the asphalt is 1:1, the epoxy resin consists of a main agent A and a curing agent B, and the dosage is A: and B is 60: 40. The proportion of mineral materials is 1# material (5-10 mm):2# material (3-5 mm):3# material (1-3 mm):4# material (0.075-1 mm): mineral powder is 23:7:62:8, the oilstone ratio is 6.5%, and the porosity is controlled to be 1-2%. The thickness of the high-temperature mixing type epoxy asphalt concrete layer is 25-35 mm.
Preferably, the penetrating resin consists of a main agent A and a curing agent B, and the dosage is A: and B is 83: 17. A thickness of 0.4 to 0.6mm and a coating weight of 0.4 to 0.6kg/m2。
Preferably, the resin gravel wearing layer comprises weather-resistant resin and basalt gravel, wherein the weather-resistant resin comprises a main agent A and a curing agent B, and the dosage of A: and B is 83:17, and the crushed stone is 1-3 mm of basalt and has the thickness of 4-9 mm. The resin broken stone thin layer is constructed in two layers, the thickness of each layer of resin is 1-1.2 mm, and the coating weight is 1.0-1.2 kg/m2Each layer of broken stone has a thickness of 1-3 mm and a spreading amount of 7-9kg/m2。
The novel pavement structure of the steel bridge deck provided by the utility model at least has the following advantages through optimization:
1. the steel bridge deck pavement structure provided by the utility model can reduce the dead load of the bridge and is easy for later maintenance; the waterproof bonding layer is made of thermosetting resin waterproof bonding materials, so that interlayer bonding can be enhanced, the structural integrity is improved, and the service life is prolonged;
2. high-strength broken stones are scattered on the thermosetting resin waterproof bonding layer, so that a rough interface can be formed, and the shearing resistance and the pushing resistance of the pavement structure are improved; the fiber concrete rigidity compensation layer has the excellent characteristics of high strength, good toughness, durability and the like, can compensate rigidity of a bridge deck system, and can restrain stress of a steel bridge deck;
3. the epoxy asphalt concrete has excellent strength and durability, and the rigidity of the epoxy asphalt concrete is more matched with that of a steel bridge deck, so that the relative deformation among different structures can be reduced; by adopting the resin gravel wearing layer, the skid resistance of the pavement can be improved, the driving safety is ensured, and the later maintenance and replacement are easy.
Drawings
FIG. 1 is a schematic view of a steel bridge deck pavement structure of the utility model:
notation in the figures: 1. epoxy zinc-rich paint anticorrosive coating; 2. a thermosetting resin waterproof adhesive layer; 3. a high-strength broken stone shear resistant layer; 4. a fiber concrete stiffness compensation layer; 5. mixing the epoxy asphalt concrete layer at a high temperature; 6. a permeable resin adhesive layer; 7. and a resin broken stone wearing layer.
Detailed Description
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
The commercial material sources used in the following examples are as follows:
epoxy zinc-rich paint, rainbow old paint (kunshan) limited;
thermosetting epoxy resin binder, midroad science and technology, ltd;
high-performance concrete cementing material used for the fiber concrete rigidity compensation layer, Zhongluojike science and technology corporation;
basalt, Jiangsu Maodi group, Inc.;
mineral powder used in a high-temperature mixing type epoxy asphalt concrete layer is used in a building material meridian part of Xingzhou district Xingdong (26104);
epoxy resin binder used in high-temperature mixing type epoxy asphalt concrete layer, Jiangsu Zhongyi passway New Material Co., Ltd;
SBS modified asphalt used for high-temperature mixing type epoxy asphalt concrete layer: jiangsu Zhongyi passway New Material Co., Ltd;
permeable resin for the adhesive layer, Zhongluo Ke science and technology GmbH;
the resin stone wearing layer is made of weather-resistant resin, Zhongluoji science and technology corporation.
Example 1
As shown in figure 1, the steel bridge deck pavement structure of the utility model is sequentially provided with an epoxy zinc-rich paint anticorrosive layer 1, a thermosetting resin waterproof bonding layer 2, a high-strength broken stone anti-shearing layer 3, a fiber concrete rigidity compensation layer 4, a high-temperature mixing type epoxy asphalt concrete layer 5, a permeable resin bonding layer 6 and a resin broken stone wearing layer 7 from bottom to top from the surface of the steel bridge deck.
When the epoxy zinc-rich paint is laid, firstly, the steel bridge deck is subjected to sand blasting for rust removal, the cleanliness reaches Sa2.5 grade, then, the epoxy zinc-rich paint anticorrosive layer 1 is sprayed on the steel bridge deck, the dry film thickness of the epoxy zinc-rich paint is 80 mu m, and the technical requirements of the epoxy zinc-rich paint are shown in table 1. Curing the epoxy zinc-rich paint for 7 days, and then coating the thermosetting epoxy resin waterproof bonding layer 2 on the epoxy zinc-rich paint, wherein the coating weight is 0.48kg/m2The specifications of the thermosetting resin binder are shown in table 2. And 5-10 mm of broken stones are spread immediately after the thermosetting waterproof bonding layer is coated, and the spreading amount of the broken stones is 65 percent of that of the full cloth, so that the high-strength broken stone shear resistant layer 3 is formed.
Paving freshly-mixed high-performance concrete on the high-strength broken stone anti-shearing layer 3, controlling the vibration distance to be 0.5-1.0 m, vibrating each position for 10-20 s, performing surface polishing treatment before initial setting after vibration compaction, and performing roughening treatment on the surface after final setting to enhance the adhesive force so as to better combine the layers; and spraying water mist and covering a film for moisturizing and curing for 14d to form the fiber concrete rigidity compensation layer 4.
And (3) removing floating slurry and loose impurities on the surface of the high-performance concrete pavement, and paving the high-temperature mixing type epoxy asphalt mixture. The maximum nominal grain diameter of the aggregate of the high-temperature mixing type epoxy asphalt mixture is 9.5mm, the oilstone ratio is 6.5%, the thickness is 35mm, a high-temperature mixing type epoxy asphalt concrete layer 5 is formed, the mineral aggregate grading requirement is shown in table 3, and the mixture technical requirement is shown in table 4.
After the pavement layer of the high-temperature mixing type epoxy asphalt mixture is paved, performing shot blasting on the surface of the pavement layer of the high-temperature mixing type epoxy asphalt concrete when the strength of the test piece reaches more than 20kN along with the bridge maintenance, and removing an oil film on the surface of the pavement layer. Then, a permeable resin was applied by hand at a coating weight of 0.6kg/m2Forming a permeable resin adhesive layer 6, a permeable resin, and a related artThe requirements are shown in table 5. After 1 day of curing, the weather-resistant resin is coated by manual blade coating, and the coating weight is 1.1kg/m2Spreading broken stone after being coated with weather-resistant resin, wherein the broken stone is basalt with the particle size of 1-3 mm and the using amount of the basalt is 8kg/m2The resin stone wearing layer 7 was formed, and the related technical requirements of weather resistant resin are shown in table 6. When the first layer of weather-resistant resin is completely cured (about 1 to 2 days), coating a second layer of weather-resistant resin, wherein the coating amount is controlled to be 1.1kg/m2Next to the weather-resistant resin blade coating process, a second layer of broken stone is scattered, the particle size of the broken stone is 1-3 mm basalt, and the scattering amount is 8kg/m2. And after the weather-resistant resin is cured (about 1-2 days), cleaning the loose broken stones on the pavement. And opening the traffic when the strength of the hot-mixed epoxy asphalt concrete curing test piece along with the bridge reaches more than 40 kN.
TABLE 1 technical requirements for epoxy zinc-rich paint
TABLE 2 waterproof Binder requirements for thermosetting resins
TABLE 3 high-temp. mixing type epoxy asphalt mixture mineral aggregate gradation
TABLE 4 technical requirements of epoxy asphalt concrete
TABLE 5 Permeability resin requirements
TABLE 6 weather resistant resins specifications
Example 2
As shown in figure 1, the steel bridge deck pavement structure of the utility model is sequentially provided with an epoxy zinc-rich paint anticorrosive layer 1, a thermosetting resin waterproof bonding layer 2, a high-strength broken stone anti-shearing layer 3, a fiber concrete rigidity compensation layer 4, a high-temperature mixing type epoxy asphalt concrete layer 5, a permeable resin bonding layer 6 and a resin broken stone wearing layer 7 from bottom to top from the surface of the steel bridge deck.
When the epoxy zinc-rich paint is laid, firstly, the steel bridge deck is subjected to sand blasting for rust removal, the cleanliness reaches Sa2.5 grade, and then, the epoxy zinc-rich paint anticorrosive layer 1 is sprayed on the steel bridge deck, and the dry film thickness of the epoxy zinc-rich paint is 90 mu m. Curing the epoxy zinc-rich paint for 7 days, and then coating the thermosetting resin waterproof bonding layer 2 on the epoxy zinc-rich paint, wherein the coating weight is 0.5kg/m2. And immediately spreading 10-15 mm of broken stones after the thermosetting resin waterproof bonding layer 2 is coated, wherein the spreading amount of the broken stones is 75 percent of that of the full cloth, and thus the high-strength broken stone shear resistant layer 3 is formed.
Paving freshly-mixed high-performance concrete on the high-strength broken stone anti-shearing layer 3, controlling the vibration distance to be 0.5-1.0 m, vibrating each position for 10-20 s, performing surface polishing treatment before initial setting after vibration compaction, performing roughening treatment on the surface after final setting, and enhancing the adhesive force to enable the layers to be better combined; and spraying water mist and covering a film for moisturizing and curing for 14d to form the fiber concrete rigidity compensation layer 4.
Removing floating slurry and loose impurities on the surface of the high-performance concrete pavement, and paving the high-temperature mixing type epoxy asphalt mixture to form a high-temperature mixing type epoxy asphalt concrete layer 5, wherein the maximum nominal aggregate particle size of the high-temperature mixing type epoxy asphalt mixture is 9.5mm, the oilstone ratio is 6.5%, and the thickness is 30 mm.
After the pavement layer of the high-temperature mixing type epoxy asphalt mixture is paved, performing shot blasting on the surface of the pavement layer of the high-temperature mixing type epoxy asphalt concrete when the strength of the test piece reaches more than 20kN along with the bridge maintenance, and removing an oil film on the surface of the pavement layer. Then, a permeable resin is manually blade-coated to form a permeable resin adhesive layer 6, and the coating weight is 0.5kg/m2. After 1 day of curing, the weather-resistant resin is coated by manual blade coating, and the coating weight is 1.2kg/m2Spreading broken stone after being coated with weather-resistant resin, wherein the broken stone is basalt with the particle size of 1-3 mm and the using amount of 9kg/m2. When the first layer of weather-resistant resin is completely cured (about 1 to 2 days), coating a second layer of weather-resistant resin, wherein the coating amount is controlled to be 1.2kg/m2Next to the weather-resistant resin blade coating process, a second layer of broken stone is scattered, the particle size of the broken stone is 1-3 mm basalt, and the scattering amount is 9kg/m2. And after the weather-resistant resin is cured (about 1-2 days), cleaning the loose broken stones on the pavement. And opening the traffic when the strength of the hot-mixed epoxy asphalt concrete curing test piece along with the bridge reaches more than 40 kN.
Claims (9)
1. The utility model provides a combined type steel bridge deck pavement structure which characterized in that: the steel bridge deck plate surface has set gradually from bottom to top: the high-strength concrete high-strength epoxy zinc-rich paint comprises an epoxy zinc-rich paint anticorrosive layer (1), a thermosetting resin waterproof bonding layer (2), a high-strength broken stone anti-shearing layer (3), a fiber concrete rigidity compensation layer (4), a high-temperature mixing type epoxy asphalt concrete layer (5), a permeable resin bonding layer (6) and a resin broken stone wearing layer (7).
2. The composite steel deck pavement structure of claim 1, wherein: the thickness of the epoxy zinc-rich paint anticorrosive layer (1) is 60-100 mu m.
3. The composite steel deck pavement structure of claim 1, wherein: the thickness of the thermosetting resin waterproof bonding layer (2) is 0.45-0.5 mm.
4. The composite steel deck pavement structure of claim 1, wherein: the thickness of the high-strength broken stone shear resistant layer (3) is 3-15 mm.
5. The composite steel deck pavement structure of claim 1, wherein: the thickness of the fiber concrete rigidity compensation layer (4) is 10-15 mm.
6. The composite steel deck pavement structure of claim 1, wherein: the thickness of the high-temperature mixing type epoxy asphalt concrete layer (5) is 25-35 mm.
7. The composite steel deck pavement structure of claim 1, wherein: the thickness of the permeable resin adhesive layer (6) is 0.4-0.6 mm.
8. The composite steel deck pavement structure of claim 1, wherein: the thickness of the resin gravel wearing layer (7) is 4-9 mm.
9. The composite steel deck pavement structure of claim 1, wherein: the total thickness of the bridge deck pavement structure is 42-75 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122835051.4U CN216339027U (en) | 2021-11-18 | 2021-11-18 | Combined type steel bridge deck pavement structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122835051.4U CN216339027U (en) | 2021-11-18 | 2021-11-18 | Combined type steel bridge deck pavement structure |
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| CN216339027U true CN216339027U (en) | 2022-04-19 |
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