CN213061700U - Long-life bridge deck pavement structure - Google Patents
Long-life bridge deck pavement structure Download PDFInfo
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- CN213061700U CN213061700U CN202021012838.XU CN202021012838U CN213061700U CN 213061700 U CN213061700 U CN 213061700U CN 202021012838 U CN202021012838 U CN 202021012838U CN 213061700 U CN213061700 U CN 213061700U
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Abstract
The utility model relates to a road bridge technical field of mating formation relates to a road bridge structure of mating formation, concretely relates to long-life bridge deck structure of mating formation, its technical essential as follows, from steel decking upper surface, from upwards having set gradually down: the waterproof concrete pavement structure comprises a second-order epoxy resin waterproof bonding layer, a lower high-modulus asphalt concrete layer paved on the lower layer, a second-order epoxy waterproof bonding layer, a cold-mixed resin asphalt concrete layer and a weather-resistant anti-skid resin macadam finish coat. The utility model improves the anti-skid property, anti-fatigue property and high temperature property of the bridge deck and the durability of the bridge deck pavement layer by optimizing the bridge deck pavement structure; furthermore, the utility model relates to a material green, the performance is excellent, has both guaranteed the life-span on bridge deck pavement layer, has improved environmental benefit again, and the layer structure of mating formation sets up rationally, construction easy operation.
Description
Technical Field
The utility model relates to a road bridge technical field of mating formation relates to a road bridge structure of mating formation, concretely relates to long-life bridge deck pavement structure.
Background
In recent years, the construction of domestic basic bridges is rapidly advanced, and the pavement of a steel bridge deck is one of bridge key projects, so that the performance of the bridge deck is very important.
The steel bridge deck pavement in China is developed at a high speed for more than ten years, and the pavement technologies such as epoxy asphalt, pouring type, ERS combined type and the like are mainly formed through means such as technical introduction, independent research and development and the like, wherein the epoxy asphalt pavement usually adopts a double-layer structure, and the total thickness is 5-6 cm; the pouring type usually adopts a composite structure, namely the lower layer pouring type and the upper layer asphalt pavement are carried out, and the total thickness is 7-8 cm; the ERS combined type pavement structure adopts a lower epoxy layer and an upper SMA layer, and the total thickness is 5-8 cm.
Due to the extreme use conditions of high temperature, heavy load and the like in China, the pouring type and ERS combined pavement adopts asphalt materials, the high temperature performance is insufficient, the early damage of the bridge deck pavement is serious, the damage such as cracks, pits, ruts, transition and the like usually appears after the pavement is used for 3-5 years, the service life is far shorter than the original design service life, and the maintenance task is heavy. The traditional epoxy paving structure has the defects of small surface structure depth, poor anti-skid property, long maintenance period and large traffic influence.
In view of the above-mentioned current road bridge structure form of mating formation and the defect that exists, this designer is based on engaging in the practical experience and the professional knowledge that this kind of product engineering was used richly for many years to the application of theory is cooperated, and the research innovation is actively carried out, in order to establish a novel road bridge structure of mating formation, and thickness is at 7~11cm, and the construction is simple, extension bridge floor life makes it more have the practicality.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes the defect that current road bridge structure of mating formation exists, and provides a long-life bridge deck pavement structure, improves the durability on bridge deck pavement layer to sliding resistance, fatigue resistance and the high temperature behavior of bridge deck, is suitable for the practicality more, and has the industrial value of utilizing.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme.
The utility model provides a pair of long-life bridge deck pavement structure for stratiform composite construction, has set gradually from the bottom up at the upper surface of steel bridge face: the waterproof asphalt concrete pavement structure comprises a first second-order epoxy waterproof bonding layer, a lower high-modulus asphalt concrete layer paved, a second-order epoxy waterproof bonding layer, a cold-mixed resin asphalt concrete layer and a weather-resistant anti-skid resin macadam finish coat.
Furthermore, the thickness of the first second-order epoxy waterproof bonding layer is 0.4-0.6 mm, and the dosage is 0.4-0.6 kg/m2。
Furthermore, the thickness of the second-order epoxy waterproof bonding layer is 0.4-0.6 mm, and the using amount is 0.4-0.6 kg/m2。
Further, the thickness of the lower high-modulus asphalt concrete layer is 3-5 cm. The high-modulus asphalt concrete layer on the lower paved layer is paved by a high-modulus mixture, wherein the high-modulus mixture is formed by hard asphalt and improved mineral aggregate gradation, the high-modulus mixture is in dense gradation, the nominal maximum particle size of broken stones is 13.2mm, and the oil-stone ratio is 5-6%, so that coarse aggregates form a good framework structure to improve the shearing resistance and the compression resistance of the mixture, and the surface of the mineral aggregate has a proper asphalt film thickness by adding more asphalt, the compactness of the mixture is improved, and the durability is improved.
Furthermore, the control range of the void ratio of the high-modulus asphalt concrete layer on the lower layer is less than or equal to 4 percent.
Furthermore, the thickness of the cold-mixed resin asphalt concrete layer is 3-5 cm.
Furthermore, the control range of the porosity of the cold-mixed resin asphalt concrete layer is less than or equal to 3 percent. The cold-mixed resin asphalt concrete layer is composed of resin asphalt cementing materials, crushed stone and mineral powder, wherein the crushed stone is in dense grading, the nominal maximum grain size of the crushed stone is 9.5mm or 13.2mm, and the crushed stone is composed of basalt, limestone mineral powder and 7-9% of oilstone.
Furthermore, the thickness of the weather-resistant anti-skid resin macadam finish coat is 3-5 mm. The weather-resistant anti-slip resin macadam finish coat consists of weather-resistant resin and macadam, and the coating weight of the weather-resistant resin is 1.0-1.5 kg/m2Synchronously spreading 3-5 mm clean basalt broken stone, wherein the dosage of the basalt broken stone is 3-5 kg/m2. The road surface pavement structure has excellent anti-sliding and wear-resisting effects, improves the driving safety and comfort, disperses the wheel load acting force through the point-to-surface contact characteristic between the broken stone and the resin pavement layer, and prolongs the fatigue life of the pavement layer.
Furthermore, the total thickness of the layered composite structure is 7-11 cm.
Advantageous effects
The utility model provides a long-life bridge deck pavement structure, which adopts a layered composite structure, the first and second-order epoxy waterproof bonding layers are well bonded with the surface of a pavement bridge deck slab and cooperatively deform, and the steel plate can be effectively protected from being eroded by rainwater; the high-modulus asphalt concrete layer on the lower paved layer is made of high-modulus asphalt concrete, so that the high-modulus asphalt concrete layer has good strength, water stability, fatigue resistance and durability, and can be used for a long time; the upper layer of the paving and the mounting all adopt cold-mixed resin materials, the construction is simple, and the traffic can be opened quickly; the weather-resistant anti-skid resin macadam overlay has excellent anti-skid and wear-resistant effects, improves the driving safety and comfort, disperses the wheel load acting force and prolongs the fatigue life of a pavement layer through the point-to-surface contact characteristic between macadam and the resin pavement layer. The utility model improves the anti-skid property, anti-fatigue property and high temperature property of the bridge deck and the durability of the bridge deck pavement layer by optimizing the bridge deck pavement structure; furthermore, the utility model relates to a material green, the performance is excellent, has both guaranteed the life-span on bridge deck pavement layer, has improved environmental benefit again, and the layer structure of mating formation sets up rationally, construction easy operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a long-life deck pavement structure;
FIG. 2 is a graph of a high modulus asphalt mix optimization grading;
FIG. 3 is a composition grading curve diagram of a cold-mix resin asphalt concrete layer.
Notation in the figures: 1. the waterproof asphalt concrete pavement structure comprises a first second-order epoxy waterproof bonding layer, a lower high-modulus asphalt concrete layer, a second-order epoxy waterproof bonding layer, a cold-mixed resin asphalt concrete layer and a weather-resistant anti-skid resin macadam finish coat layer, wherein the first second-order epoxy waterproof bonding layer is paved, the lower high-modulus asphalt concrete layer is paved, the second-order epoxy waterproof bonding layer is paved, the.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The commercial material sources used in the following examples are as follows:
second-order epoxy resin: science and technology development Co Ltd of Jiangsu Zhonglu New Material
Crushing stone: tunjiang Maodi industries Ltd
Hard asphalt: jiangsu Zhongyi channel New Material Co Ltd
Improving mineral aggregate: jiangsu Yabang mining Co Ltd
Resin asphalt cement: science and technology development Co Ltd of Jiangsu Zhonglu New Material
Mineral powder-Tanshou Shugan mining Co Ltd
Basalt, Jiangsu Yabang mining Co Ltd
Limestone mineral powder, Jiangsu Yabang mining Co Ltd
Weather-resistant resin: science and technology development Co Ltd of Jiangsu Zhonglu New Material
Example 1
The long-life bridge deck pavement structure of this embodiment, as shown in fig. 1, the bridge deck pavement structure is laminated composite structure, has set gradually first second order epoxy waterproof bonding layer 1 from the bottom up at the upper surface of steel bridge face, adopts second order epoxy to mat formation preparation, and thickness is 0.5mm, and the quantity is 0.4~0.6 kg/m2(ii) a Paving a lower high-modulus asphalt concrete layer 2 with the thickness of 4cm, paving the lower high-modulus asphalt concrete layer by using a high-modulus mixture, wherein the high-modulus mixture is formed by hard asphalt and improved mineral aggregate gradation, the high-modulus mixture is in dense gradation, the nominal maximum particle size of broken stones is 13.2, the oil-stone ratio is 5-6%, and the void ratio control range is less than or equal to 4%; the second-order epoxy waterproof bonding layer 3 is prepared by paving second-order epoxy resin, the thickness is 0.5mm, and the using amount is 0.4-0.6 kg/m2(ii) a The cold-mixed resin asphalt concrete layer 4 is composed of resin asphalt cement, crushed stone and mineral powder, and adopts close gradation, the nominal maximum grain diameter of the crushed stone is 9.5mm or 13.2mm, the crushed stone adopts basalt and limestone mineral powder, the proportion of the oil stone is 7-9%, and the control range of the void ratio is less than or equal to 3%; the weather-resistant anti-skid resin macadam coat surface layer 5 has the coating weight of the weather-resistant resin of 1.0 to 1.5kg/m2Spreading 3-5 mm of clean basalt broken stone, wherein the dosage of the basalt broken stone is 3-5 kg/m2(ii) a The first secondary epoxy waterproof bonding layer 1 is arranged on the upper surface of the steel plate.
Wherein, the optimal oilstone ratio of the high-modulus asphalt mixture is 5.5%, the mineral aggregate synthetic grading passage rate is shown in table 1, and the preferred grading curve is shown in figure 2:
TABLE 1 mineral aggregate synthetic gradation passage
The optimal oilstone ratio in the cold-mixed resin asphalt concrete layer is 8.0%, the specific gradation is shown in table 2, and the synthetic gradation is shown in fig. 3:
TABLE 2 grading requirements and Synthesis grading
The specific construction operation steps of the long-life bridge deck pavement structure of the embodiment are as follows: wherein the total thickness of the pavement structure is 8 cm;
(1) firstly, carrying out sand blasting and rust removal on the surface of a steel plate, wherein the surface cleanliness of the steel plate is required to reach more than Sa2.5 grade, and the roughness reaches 60-120 mu m;
(2) the construction of a flexible resin waterproof sealing layer 1 is carried out within 4 hours after the steel plate is qualified by sand blasting and rust removal, namely, a first second-order epoxy waterproof bonding layer 1 is coated, the thickness is 0.5mm, and the using amount is 0.5kg/m2Keeping the health for 4h until the finger dry state is achieved;
(3) the construction of paving the lower high-modulus asphalt concrete layer 3 is carried out, the paving thickness is 4cm, wherein the high-modulus asphalt concrete layer 3 is paved by adopting a high-modulus mixture, the high-modulus mixture is composed of hard asphalt and improved mineral aggregate gradation, the dense gradation is adopted, the nominal maximum particle size of broken stones is 13.2mm, the oilstone ratio is 5.5 percent, and the void ratio control range is less than or equal to 4 percent, so that coarse aggregates form a good framework structure to improve the shearing resistance and the compression resistance of the mixture, the surface of the mineral aggregate has a proper asphalt film thickness by adding more asphalt, the compactness of the mixture is improved, the durability is improved, and after the construction is finished, the curing strength is reached after the mineral aggregate is maintained for 2;
(4) coating the second-order epoxy adhesive layer 3 with second-order epoxy resin at a coating weight of 0.4kg/m2Synchronously and closely following a 4cm thick cold-mix resin asphalt concrete pavement layer 4 with the oil-stone ratio of 8.0 percent, mixingThe maximum nominal particle size of the material is 13.2 mm. After the construction is finished, curing for 2 days to reach the curing strength;
(5) constructing a weather-resistant anti-slip Resin macadam coat 5, coating Resin-surface weather-resistant Resin produced by Jiangsu Zhonglu New Material science and technology development Limited company, wherein the coating weight of the Resin is 1.5kg/m2Synchronously spreading 3-5 mm clean basalt broken stone, with the dosage of 5kg/m2。
In this embodiment, the high modulus mixture is composed of hard asphalt and improved mineral aggregate gradation, so that the coarse aggregate forms a good skeleton structure to improve the shear resistance and the compression resistance of the mixture, and the surface of the mineral aggregate has a proper asphalt film thickness by adding more asphalt, so that the compactness of the mixture is improved, and the durability is improved.
The properties of the hard asphalt high modulus mixture material are shown in the following table 3:
TABLE 3 high modulus Material Properties
| Characteristics of mixture | High modulus blend |
| Dynamic stability DS (sub/mm) | >4000 |
| Low temperature strain to failure (mu epsilon) | >1800 |
| Residual stability (%) | >80 |
| Freeze-thaw cleavage strength ratio TSR (%) | >80 |
The second-order epoxy waterproof bonding layer and the first second-order epoxy waterproof bonding layer are matched by using a second reaction type bonding layer material, namely second-order epoxy resin, so that the interface bonding strength is improved, and the performances of the second-order epoxy resin are shown in the following table 4:
TABLE 4 second order epoxy resin Properties
The cold-mixed resin asphalt concrete layer consists of resin asphalt cementing material, crushed stone and mineral powder, the crushed stone adopts dense grading, and the basalt and limestone mineral powder are adopted as the crushed stone, so that the construction is simple, and the traffic can be quickly opened. The properties of the cold-mix resin asphalt mixture material are shown in the following table 5:
TABLE 5 Cold mix resin asphalt mixture Properties
The weather-resistant anti-skid resin macadam overlay is formed by spreading 3-5 mm of clean basalt macadams with weather-resistant resin, has excellent anti-skid and wear-resistant effects, improves the driving safety and comfort, disperses the wheel load acting force and prolongs the fatigue life of a pavement layer through the point-to-surface contact characteristic between the macadams and a resin pavement layer. The properties of the weatherable, skid-resistant resin stone cover material are shown in table 6 below:
TABLE 6 weather-resistant anti-skid resin macadam overlay Properties
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a long-life bridge deck pavement structure which characterized in that, is stratiform composite construction, has set gradually first second order epoxy waterproof bonding layer (1), has mated formation lower floor high modulus asphalt concrete layer (2), second order epoxy waterproof bonding layer (3), cold mix resin asphalt concrete layer (4) and weatherability antiskid resin rubble finish coat (5) from the bottom up at the upper surface of steel bridge face.
2. Long life bridge deck pavement structure according to claim 1, characterized in that said first (1) and second (3) second epoxy waterproof adhesive layers are each 0.4-0.6 mm thick.
3. The long-life bridge deck pavement structure according to claim 1, wherein the thickness of the pavement lower high-modulus asphalt concrete layer (2) is 3-5 cm.
4. Long life bridge deck pavement structure according to claim 1, wherein said cold mix resin asphalt concrete layer (4) has a thickness of 3-5 cm.
5. Long life bridge deck pavement structure according to claim 1, characterized in that said weather resistant anti-skid resin macadam overlay (5) has a thickness of 3 to 5 mm.
6. The long life bridge deck pavement structure of any one of claims 1 to 5, wherein the total thickness of the layered composite structure is 7 to 11 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021012838.XU CN213061700U (en) | 2020-06-04 | 2020-06-04 | Long-life bridge deck pavement structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021012838.XU CN213061700U (en) | 2020-06-04 | 2020-06-04 | Long-life bridge deck pavement structure |
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| CN213061700U true CN213061700U (en) | 2021-04-27 |
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| CN202021012838.XU Active CN213061700U (en) | 2020-06-04 | 2020-06-04 | Long-life bridge deck pavement structure |
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