CN112962465A - Steel bridge deck pavement construction process - Google Patents
Steel bridge deck pavement construction process Download PDFInfo
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- CN112962465A CN112962465A CN202110203448.3A CN202110203448A CN112962465A CN 112962465 A CN112962465 A CN 112962465A CN 202110203448 A CN202110203448 A CN 202110203448A CN 112962465 A CN112962465 A CN 112962465A
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- bridge deck
- steel bridge
- steel
- mixture
- methacrylic resin
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- 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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- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel bridge deck pavement construction process, which comprises the following steps: s1, cleaning the working surface of the steel bridge deck; s2, performing sand blasting and rust removing treatment on the working surface of the steel bridge deck; s3, rolling and coating a methacrylic resin bottom coating on the working surface of the steel bridge deck within 3h after the sand blasting rust removal inspection is qualified; s4, after the methacrylic resin base coat is cured, continuously spraying two methacrylic resin waterproof layers; s5, after the methacrylic resin waterproof layer is completely cured, immediately constructing a methacrylic resin adhesive; s6, flatly paving the pouring type mixture on the working surface of the steel bridge deck; s7, spreading modified emulsified asphalt adhesive layer oil on the surface of the casting type mixture; and S8, paving the high-elasticity modified asphalt mixture, and rolling and flattening. By adopting a reasonable construction process, the invention realizes the stable pavement of the steel bridge deck, avoids the fracture or deformation of the paved bridge deck and prolongs the service life of the steel bridge deck.
Description
Technical Field
The invention relates to the field of road construction, in particular to a steel bridge deck pavement construction process.
Background
With the rapid development of national economy, the traffic and transportation industry is greatly developed in China, and in recent decades, China builds a plurality of large-span bridges. The steel bridge deck has the advantages of light weight, convenience in transportation and erection, short construction period and the like, and is widely applied to steel bridges. However, from the construction and use of a large number of steel bridges, various early diseases of the pavement layer of the steel bridge deck become common diseases of the steel bridges, and the diseases bring adverse effects on traffic and cause huge economic losses.
The steel bridge deck pavement scheme commonly used in China is a single-layer asphalt mixture type, but the pavement bridge deck adopting the single-layer asphalt mixture type is easy to break and deform, enters a frequent maintenance stage after being used for 2-3 years, and is short in service life and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a steel bridge deck pavement construction process which has the effect of prolonging the service life.
The technical purpose of the invention is realized by the following technical scheme: a steel bridge deck pavement construction process comprises the following steps:
s1, thoroughly cleaning impurities such as welding slag, floating slurry, oil stains and the like on the working surface of the steel bridge deck;
s2, performing sand blasting and rust removing treatment on the working surface of the steel bridge deck;
s3, rolling and coating a methacrylic resin bottom coating on the working surface of the steel bridge deck within 3h after the sand blasting rust removal inspection is qualified;
s4, after the methacrylic resin base coat is cured, continuously spraying two methacrylic resin waterproof layers, wherein the accumulated wet film thickness is not less than 2 mm;
s5, after the methacrylic resin waterproof layer is completely cured, immediately constructing a methacrylic resin adhesive;
s6, flatly paving the pouring type mixture on the working surface of the steel bridge deck plate to ensure that the thickness of the pouring type mixture is 40 mm;
s7, spreading modified emulsified asphalt adhesive layer oil on the surface of the casting type mixture;
s8, paving the high-elasticity modified asphalt mixture, and rolling and flattening to ensure that the thickness of the high-elasticity modified asphalt mixture is 40 mm.
The present invention in a preferred example may be further configured to: in step S1, the appearance of the steel deck is checked to ensure that there are no weld beading, spatter, pinholes, flash, burrs, etc. on the surface, if there are defects, the steel deck is removed by polishing, the sharp corners of the steel deck are polished until the corners are processed to have a radius of 2mm or more, and then the oil, grease, salt and other dirt on the surface of the steel deck are cleaned with a cleaning agent or solvent and cleaned with high pressure clean water until there is no grease or dirt.
The present invention in a preferred example may be further configured to: in step S2, before performing sand blasting and rust removing treatment on the steel bridge deck, selecting an area of about 100 square meters per square meter on the steel bridge deck, performing trial sand blasting and rust removing treatment by using different steel grit compositions and different processes, detecting the cleanliness and the roughness of the steel plate, and confirming the sand blasting and rust removing process of the steel bridge deck.
The present invention in a preferred example may be further configured to: in step S4, the amount of the two methacrylic resin waterproof layers should be evenly distributed, and after the first layer is cured, the next layer is directly sprayed.
The present invention in a preferred example may be further configured to: in step S6, before paving the cast asphalt mixture, the mix ratio of the cast asphalt mixture is determined to be suitable for mass production in a mixing plant.
The present invention in a preferred example may be further configured to: when the mix proportion is determined, firstly, the performance of raw materials is detected, after the raw materials are qualified, the raw materials are classified into three types, namely coarse, medium and fine, and the oilstone ratio is ensured to be 8.0%, then, the Liu-Er fluidity test and the penetration test are carried out on various raw materials to determine the optimal gradation, then, five different oilstone ratios are selected, the difference value between each group of oilstone ratios is 0.3%, the Liu-Er fluidity test and the penetration test are continuously carried out, then, the low-temperature performance test is carried out, and the final mix proportion is determined.
The present invention in a preferred example may be further configured to: in step S6, when the poured mixture is spread, the main board portion on the working surface of the steel deck is mechanically spread, the side band thereof is manually spread, the temperature of the poured mixture to be spread is lowered to a suitable temperature, and 5-10 mm of pre-mixed asphalt macadam is manually spread.
The present invention in a preferred example may be further configured to: in step S6, before the potting compound is spread, the methacrylic resin adhesive is blown and dried by a blower while checking whether or not there is oil contamination, and the oil contamination is cleaned.
The present invention in a preferred example may be further configured to: in step S6, if a transverse construction joint is encountered, a steel or wooden baffle is cut to make the width of the baffle be the same as the paving width of the pouring type mixture, then the baffle is placed at the position of the construction joint, the paver is lifted a little to make the paver abut against the baffle, then a manual trowelling plate is held by hands to trowel the mixture to be close to the baffle, trowel and strike the mixture, after the mixture is cooled, the baffle is removed, finally the pouring type mixture has a vertical transverse section, the loose pouring type mixture is knocked off, and then the paver is started to pave normally.
The present invention in a preferred example may be further configured to: in step S8, when the high-elasticity modified asphalt mixture is compacted, the high-elasticity modified asphalt mixture is sequentially subjected to primary rolling, secondary rolling, and trace-collecting rolling.
In conclusion, the invention has the following beneficial effects:
1. by adopting a reasonable construction process, the stable pavement of the steel bridge deck is realized, the phenomenon of fracture or deformation of the paved bridge deck is avoided, and the service life of the steel bridge deck is prolonged;
2. by adopting a strict construction process, the mixing proportion of the pouring type mixture is calculated so as to determine the most suitable mixing proportion and ensure the structural strength and the service life of the pouring type mixture;
3. by adopting strict construction process, calculation and screening, the production of the high-elasticity modified asphalt mixture is realized, the structural strength and the service life of the high-elasticity modified asphalt mixture are ensured, and the wear resistance and the service life of the bridge deck are improved.
Drawings
FIG. 1 is a process flow diagram of an embodiment;
FIG. 2 is a flow chart of a cast mix construction process of an embodiment;
FIG. 3 is a process flow diagram of the pouring mix of the example.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a steel bridge deck pavement construction process includes the following steps:
and S1, thoroughly cleaning impurities such as welding slag, floating slurry, oil stains and the like on the working surface of the steel bridge deck. During processing, the appearance of the steel deck slab is first inspected to ensure that the surface is free of flash, spatter, pinholes, flash, burrs, etc., and if there are any of the above defects, the steel deck slab is removed by grinding.
And then, polishing sharp corners of the steel bridge deck until the corners are processed to be round corners with the radius of more than 2 mm. And then cleaning oil, grease, salt and other dirt on the surface of the steel bridge deck by using a cleaning agent or a solvent, and cleaning by using high-pressure clean water until no oil dirt or dirt exists.
And S2, performing sand blasting treatment on the working surface of the steel bridge deck. And before carrying out sand blasting and rust removing treatment on the steel bridge deck, selecting an area of about 100 square meters in area on the steel bridge deck, carrying out test sand blasting and rust removing treatment by using different steel sand compositions and different processes, detecting the cleanliness and the roughness of the steel plate, and confirming the sand blasting and rust removing process of the steel bridge deck.
S3, rolling and coating a methacrylic resin priming coat on the working surface of the steel bridge deck within 3 hours after the sand blasting rust removal inspection is qualified, wherein the dosage is not less than 150 g/square meter.
And S4, after the methacrylic resin primer coating is cured, continuously spraying two methacrylic resin waterproof layers, wherein the total material usage is 2500-3500 g/square meter, and the accumulated wet film thickness is not less than 2 mm. And the material usage of the two methacrylic resin waterproof layers should be evenly distributed, and the next layer is directly sprayed after the first coating is cured.
S5, after the waterproof layer of methacrylic resin is cured completely, the adhesive is applied immediately, and the dosage is not less than 100 g/square meter.
And S6, blowing and drying the methacrylic resin adhesive by using a blower, and simultaneously checking whether oil stains exist or not to clean the oil stains. And then flatly paving the casting mixture on the working surface of the steel bridge deck plate to ensure that the thickness of the casting mixture is 40 mm.
And when the pouring type mixture is paved, the main plate part on the working surface of the steel bridge deck is paved mechanically, and the side band of the main plate part is paved by manual operation. When the main board is partially paved, the paver moves forwards at the speed of 1-2m/min, and the asphalt mixture is leveled to a controlled thickness.
And (3) when the temperature of the cast mixture to be paved is reduced to a proper temperature, and about 190 ℃ and 210 ℃, manually spreading 5-10 mm of pre-mixed asphalt macadam, wherein the dosage of the pre-mixed asphalt macadam is 3-6 kg per square meter. Meanwhile, the premixed asphalt macadam is pressed into the pouring type mixture by a manual roller, the uniform distribution of the premixed asphalt macadam on the surface of the formed pouring type mixture is ensured, and 1/2-2/3 of the premixed asphalt macadam is embedded into the pouring type mixture.
If a transverse construction joint is met, firstly cutting a steel or wood baffle to enable the width of the baffle to be the same as the paving width of the pouring type mixture, then placing the baffle at the position of the construction joint, and lifting the paver a little to enable the paver to abut against the baffle. And then manually wiping the mixture to be closely attached to the baffle by a hand, trowelling, beating and compacting, and removing the baffle after the mixture is cooled. And finally, enabling the casting type mixture to have a vertical transverse section, knocking off the loose casting type mixture, and then, starting a paver to carry out normal paving.
As shown in fig. 2 and fig. 3, before paving the cast asphalt mixture, the mix proportion of the cast asphalt mixture is determined to be suitable for mass production in a mixing plant.
When the mixing proportion is determined, firstly, the performance of the raw materials is detected, wherein the raw materials comprise aggregate, mineral powder, modified asphalt and additives. After the raw materials are qualified, the raw materials are classified into three types, namely coarse, medium and fine, the oilstone ratio is ensured to be 8.0%, and then the various raw materials are subjected to a Liu-Er fluidity test and a penetration test to determine the optimal gradation.
And when the optimal grading is determined, selecting five different oilstone ratios, wherein the difference between the oilstone ratios of each group is 0.3%, continuing to perform the Liu-Er fluidity test and the penetration test, and then performing low-temperature performance test to determine the final mixing ratio.
S7, spreading the modified emulsified asphalt layer-sticking oil on the surface of the pouring mixture.
S8, paving the high-elasticity modified asphalt mixture, and rolling and flattening to ensure that the thickness of the high-elasticity modified asphalt mixture is 40 mm. And when the high-elasticity modified asphalt mixture is compacted, the high-elasticity modified asphalt mixture is subjected to primary rolling, secondary rolling and trace collecting rolling in sequence.
In the primary rolling process, a road roller with the self weight larger than 10 tons is used for static pressure, the primary rolling road roller moves to a position close to the tail part of the paver when moving forwards every time, and the primary rolling road roller moves forwards and backwards on the original wheel track in a reciprocating mode every time. Meanwhile, the running speed is ensured to be 3km/h, and the paving temperature of the high-elasticity modified asphalt mixture is ensured to be more than 150 ℃.
In the re-rolling process, a tyre roller is adopted to continuously roll for 2-4 times, and the paving temperature of the high-elasticity modified asphalt mixture is ensured to be more than 130 ℃ when the re-rolling is finished.
In the trace collecting and rolling process, a steel wheel road roller is adopted for non-vibration rolling and trace collecting for 1-2 times, and meanwhile, the trace collecting and rolling finishing temperature of the high-elastic modified asphalt mixture is ensured to be more than 120 ℃. Meanwhile, a small-sized road roller and a manually operated dynamic rammer are adopted to tamp the part with the edge difficult to tamp by a large-sized road roller.
The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. A steel bridge deck pavement construction process is characterized in that: the method comprises the following steps:
s1, thoroughly cleaning impurities such as welding slag, floating slurry, oil stains and the like on the working surface of the steel bridge deck;
s2, performing sand blasting and rust removing treatment on the working surface of the steel bridge deck;
s3, rolling and coating a methacrylic resin bottom coating on the working surface of the steel bridge deck within 3h after the sand blasting rust removal inspection is qualified;
s4, after the methacrylic resin base coat is cured, continuously spraying two methacrylic resin waterproof layers, wherein the accumulated wet film thickness is not less than 2 mm;
s5, after the methacrylic resin waterproof layer is completely cured, immediately constructing a methacrylic resin adhesive;
s6, flatly paving the pouring type mixture on the working surface of the steel bridge deck plate to ensure that the thickness of the pouring type mixture is 40 mm;
s7, spreading modified emulsified asphalt adhesive layer oil on the surface of the casting type mixture;
s8, paving the high-elasticity modified asphalt mixture, and rolling and flattening to ensure that the thickness of the high-elasticity modified asphalt mixture is 40 mm.
2. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S1, the appearance of the steel deck is checked to ensure that there are no weld beading, spatter, pinholes, flash, burrs, etc. on the surface, if there are defects, the steel deck is removed by polishing, the sharp corners of the steel deck are polished until the corners are processed to have a radius of 2mm or more, and then the oil, grease, salt and other dirt on the surface of the steel deck are cleaned with a cleaning agent or solvent and cleaned with high pressure clean water until there is no grease or dirt.
3. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S2, before performing sand blasting and rust removing treatment on the steel bridge deck, selecting an area of about 100 square meters per square meter on the steel bridge deck, performing trial sand blasting and rust removing treatment by using different steel grit compositions and different processes, detecting the cleanliness and the roughness of the steel plate, and confirming the sand blasting and rust removing process of the steel bridge deck.
4. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S4, the amount of the two methacrylic resin waterproof layers should be evenly distributed, and after the first layer is cured, the next layer is directly sprayed.
5. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S6, before paving the cast asphalt mixture, the mix ratio of the cast asphalt mixture is determined to be suitable for mass production in a mixing plant.
6. The steel bridge deck pavement construction process according to claim 5, characterized in that: when the mix proportion is determined, firstly, the performance of raw materials is detected, after the raw materials are qualified, the raw materials are classified into three types, namely coarse, medium and fine, and the oilstone ratio is ensured to be 8.0%, then, the Liu-Er fluidity test and the penetration test are carried out on various raw materials to determine the optimal gradation, then, five different oilstone ratios are selected, the difference value between each group of oilstone ratios is 0.3%, the Liu-Er fluidity test and the penetration test are continuously carried out, then, the low-temperature performance test is carried out, and the final mix proportion is determined.
7. The steel bridge deck pavement construction process according to claim 5, characterized in that: in step S6, when the poured mixture is spread, the main board portion on the working surface of the steel deck is mechanically spread, the side band thereof is manually spread, the temperature of the poured mixture to be spread is lowered to a suitable temperature, and 5-10 mm of pre-mixed asphalt macadam is manually spread.
8. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S6, before the potting compound is spread, the methacrylic resin adhesive is blown and dried by a blower while checking whether or not there is oil contamination, and the oil contamination is cleaned.
9. The steel bridge deck pavement construction process according to claim 8, characterized in that: in step S6, if a transverse construction joint is encountered, a steel or wooden baffle is cut to make the width of the baffle be the same as the paving width of the pouring type mixture, then the baffle is placed at the position of the construction joint, the paver is lifted a little to make the paver abut against the baffle, then a manual trowelling plate is held by hands to trowel the mixture to be close to the baffle, trowel and strike the mixture, after the mixture is cooled, the baffle is removed, finally the pouring type mixture has a vertical transverse section, the loose pouring type mixture is knocked off, and then the paver is started to pave normally.
10. The steel bridge deck pavement construction process according to claim 1, characterized in that: in step S8, when the high-elasticity modified asphalt mixture is compacted, the high-elasticity modified asphalt mixture is sequentially subjected to primary rolling, secondary rolling, and trace-collecting rolling.
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| CN202110203448.3A CN112962465A (en) | 2021-02-23 | 2021-02-23 | Steel bridge deck pavement construction process |
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| CN202110203448.3A CN112962465A (en) | 2021-02-23 | 2021-02-23 | Steel bridge deck pavement construction process |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481901A (en) * | 2009-01-15 | 2009-07-15 | 广东省长大公路工程有限公司 | Pouring type asphalt concrete construction method for central strip |
| CN103015316A (en) * | 2012-12-26 | 2013-04-03 | 上海浦东路桥建设股份有限公司 | Asphalt concrete steel bridge pavement structure and pavement method thereof |
| CN104846740A (en) * | 2015-03-19 | 2015-08-19 | 南通大学 | Large-span steel box beam bridge deck pavement layer material gradient structure pavement construction method |
| CN205999737U (en) * | 2016-08-31 | 2017-03-08 | 龙建路桥股份有限公司 | Deck installation structure |
| CN110184933A (en) * | 2019-05-31 | 2019-08-30 | 中铁十六局集团有限公司 | A kind of steel box girder bridge floor paving construction method |
| CN110205894A (en) * | 2019-06-05 | 2019-09-06 | 中交一公局第三工程有限公司 | Steel bridge deck is mated formation the construction method of lower layer |
| CN211848904U (en) * | 2019-12-04 | 2020-11-03 | 江苏中路工程技术研究院有限公司 | Compound pouring type pavement structure |
-
2021
- 2021-02-23 CN CN202110203448.3A patent/CN112962465A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481901A (en) * | 2009-01-15 | 2009-07-15 | 广东省长大公路工程有限公司 | Pouring type asphalt concrete construction method for central strip |
| CN103015316A (en) * | 2012-12-26 | 2013-04-03 | 上海浦东路桥建设股份有限公司 | Asphalt concrete steel bridge pavement structure and pavement method thereof |
| CN104846740A (en) * | 2015-03-19 | 2015-08-19 | 南通大学 | Large-span steel box beam bridge deck pavement layer material gradient structure pavement construction method |
| CN205999737U (en) * | 2016-08-31 | 2017-03-08 | 龙建路桥股份有限公司 | Deck installation structure |
| CN110184933A (en) * | 2019-05-31 | 2019-08-30 | 中铁十六局集团有限公司 | A kind of steel box girder bridge floor paving construction method |
| CN110205894A (en) * | 2019-06-05 | 2019-09-06 | 中交一公局第三工程有限公司 | Steel bridge deck is mated formation the construction method of lower layer |
| CN211848904U (en) * | 2019-12-04 | 2020-11-03 | 江苏中路工程技术研究院有限公司 | Compound pouring type pavement structure |
Non-Patent Citations (1)
| Title |
|---|
| 王彦超: "大跨径钢桥面浇注式沥青混凝土铺装施工设计", 《北方交通》 * |
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