CN202247583U - Pavement structure of steel girder bridge floor - Google Patents
Pavement structure of steel girder bridge floor Download PDFInfo
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- CN202247583U CN202247583U CN2011202329195U CN201120232919U CN202247583U CN 202247583 U CN202247583 U CN 202247583U CN 2011202329195 U CN2011202329195 U CN 2011202329195U CN 201120232919 U CN201120232919 U CN 201120232919U CN 202247583 U CN202247583 U CN 202247583U
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- stratum reticulare
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Abstract
The utility model relates to a pavement structure of a steel girder bridge floor. The pavement structure is characterized by comprising an anti-shearing steel bar mesh layer welded on a steel girder top plate and formed by longitudinally and transversely staggering crankshaft-like steel bars, an epoxy waterproof bonding layer paved on the steel girder top plate, a waterproof concrete layer paved on the epoxy waterproof bonding layer, a waterproof bonding layer paved on the waterproof concrete layer and a high-temperature resistant polyester fiber or steel fiber-doped modified asphalt SMA surface layer paved on the waterproof bonding layer; and the waterproof concrete layer is embedded into the anti-shearing steel bar mesh layer, and the upper end face of the waterproof concrete layer exceeds the upper end of the anti-shearing steel bar mesh layer. Through the anti-shearing steel bar mesh layer, the steel girder top plate and the waterproof concrete layer are combined into a whole, so that waterproof concrete is prevented from cracking, uplift is resisted, the rigidity of steel girders and the damage resistance of a pavement layer under heavy load and dynamic load are improved, and the service life of the pavement layer is prolonged; the epoxy waterproof bonding layer, the waterproof concrete layer and the waterproof bonding layer form a three-layer waterproof barrier, so that the steel girders are prevented from being corroded; and the modified asphalt SMA surface layer improves the toughness and the deformation resistance of the pavement layer, so that the pavement structure has good thermal stability.
Description
Technical field
The utility model relates to the construction works technical field of truss bridge, particularly a kind of paving structure of girder steel bridge floor.
Background technology
The highway in China bridge construction develops rapidly in recent years, and bridge construction is constantly brought forth new ideas, and truss bridge is very general.Deck paving is as an important component part of integral bridge structure; It is the bridge floor topping; Also be the common stress layer of bridge deck structure, the quality of its quality and practical durability directly have influence on bridge and build up traveling security during the back operation, comfortableness, durability.Girder steel bridge deck pavement material commonly used both at home and abroad at present mainly contains four kinds: pouring asphalt compound, asphalt Matrix mixing material are also claimed SMA, epoxy asphalt concrete and modified asphalt mixture.Wherein SMA and epoxy asphalt concrete use in China the most extensive, particularly double-deck SMA mat formation use at home in recent years more.Adopt the girder steel deck paving of the above-mentioned material and the scheme of mating formation after being open to the traffic, just occur soon the high temperature rut, in length and breadth to push, disease such as cracking.For addressing the above problem, some design department also adopted other pavement materials and technology, replaced the bituminous mixture layer, in plain concrete, mixed steel fibre etc. as adopting epoxy asphalt concrete, but all do not achieve the desired result.
Summary of the invention
The utility model provides a kind of raising girder steel overall construction intensity for solving the technical problem that exists in the known technology; Prevent to mat formation layer in length and breadth to pushing, ftractureing; Have good heat stability and non-deformability, the paving structure of the girder steel bridge floor that increases the service life.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of paving structure of girder steel bridge floor; It is characterized in that: comprise the shear reinforcement stratum reticulare that is criss-cross arranged and forms by bent axle shape reinforcing bar that is welded on the girder steel top board; Be laid on the epoxy waterproof tack coat on the girder steel top board; Be laid on the waterproof concrete layer on the epoxy waterproof tack coat, be laid on the water-proof tack coat on the waterproof concrete layer and be laid on the modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre on the water-proof tack coat; The embedding of said waterproof concrete layer is laid in the shear reinforcement stratum reticulare, and its upper surface exceeds shear reinforcement stratum reticulare upper end.
The technical scheme that the utility model can also be taked is:
The bent axle shape reinforcing bar that is criss-cross arranged in the said shear reinforcement stratum reticulare is positive and negative 45 ° of angles with the direction of traffic of bridge respectively.
Spacing in the said shear reinforcement stratum reticulare between the adjacent reinforcing bar is 400mm.
The diameter of reinforcing bar is 10～14mm in the said shear reinforcement stratum reticulare.
The upper surface of said waterproof concrete layer exceeds shear reinforcement stratum reticulare upper end 10mm.
Said epoxy waterproof tack coat is double-deck epoxy coating.
Advantage and the good effect that the utlity model has are:
1) is welded in shear reinforcement stratum reticulare on the girder steel top board, makes girder steel top board and waterproof concrete layer be combined into firm integral body, except the effect of playing WELDING STUDS; Steel mesh reinforcement is formed on bent axle reinforcing bar top; Prevent the waterproof concrete cracking, and produce common distortion, opposing starts; Collaborative work; Effectively improve the rigidity of girder steel deck system and the rigidity of whole girder steel, improved the ability that mat formation layer opposing traction engine and dynamic load effect produce problems such as cracking, piece split, push, delamination, wave down, prolonged the life-span of the layer of mating formation.
3) three layer construction of employing epoxy waterproof tack coat, waterproof concrete layer and water-proof tack coat forms three road waterproof barriers, guarantees that girder steel is not corroded, and prolongs the application life of bridge.
2) the superiors of paving structure adopt the modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre; The toughness and the non-deformability of the layer of mating formation have been improved; Can satisfy the requirement of high-temperature stability and low-temperature cracking-resistance, normal temperature antifatigue; Owing to mixed fiber, its cracking resistance, push, performance such as delamination also is improved.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the schematic cross-section of the utility model.
Among the figure: 1, girder steel top board; 2, shear reinforcement stratum reticulare; 2-1, bent axle shape reinforcing bar; 2-2, shear reinforcement stratum reticulare upper end; 3, epoxy waterproof tack coat; 4, waterproof concrete layer; 5, water-proof tack coat; 6, modified asphalt SMA surface layer.
The specific embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1-2; A kind of deck installation structure of girder steel; Comprise the shear reinforcement stratum reticulare 2 that is criss-cross arranged and forms by bent axle shape reinforcing bar 2-1 that is welded on the girder steel top board 1; Be laid on the epoxy waterproof tack coat 3 on the girder steel top board, be laid on the waterproof concrete layer 4 on the epoxy waterproof tack coat, be laid on the water-proof tack coat 5 on the waterproof concrete layer and be laid on the modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre on the water-proof tack coat; The embedding of said waterproof concrete layer is laid in the shear reinforcement stratum reticulare, and its upper surface exceeds shear reinforcement stratum reticulare upper end 2-2.Bent axle shape reinforcing bar crisscross in the above-mentioned shear reinforcement stratum reticulare can laterally arrange with direction of traffic and bridge cross direction respectively; Also can be in a certain angle; For guaranteeing that vehicle is in the bridge floor driving process; Make in length and breadth the reinforcing bar of arranging simultaneously stressed, above-mentioned bent axle shape reinforcing bar preferably is positive and negative 45 ° of angles with the direction of traffic of bridge respectively.Reinforcing bar in the above-mentioned shear reinforcement stratum reticulare can adopt the HRB335 material, and diameter is got 10～14mm, adopts 10～12mm below public affairs-I level, the above 12～14mm that adopts of public affairs-I.Spacing between the adjacent reinforcing bar of above-mentioned shear reinforcement stratum reticulare can confirm that take all factors into consideration the mode of occupation of present domestic bridge, rebar spacing is preferably 400mm according to the design supporting capacity of bridge; The welding manner of above-mentioned shear reinforcement stratum reticulare and girder steel top board is specially: the reinforcing bar square crossing is arranged in girder steel top board top, adopts the mode of the staggered welding in both sides to realize that both are fixedly connected; The upper surface of above-mentioned waterproof concrete layer exceeds shear reinforcement stratum reticulare upper end; Be convenient to the laying of water-proof tack coat and modified asphalt SMA surface layer on the one hand; Process from bent axle shape reinforcing bar on the other hand; Reduce cost and guarantee the to mat formation aspects such as intensity of layer consider that the distance that the upper surface of said waterproof concrete layer exceeds shear reinforcement stratum reticulare upper end is preferably 10mm.
Above-mentioned epoxy waterproof tack coat can adopt double-deck epoxy coating, about every bed thickness 1.5mm; Above-mentioned waterproof concrete layer according to the effect of load-carrying grade, can adopt CF30～CF50 waterproof concrete; Adopt CF30～CF40 below public affairs-I level; The above CF40-CF50 that adopts of public affairs-I, impervious grade is not less than P8, and the thickness of waterproof concrete layer is provided with according to the preset load-carrying situation of bridge; Above-mentioned water-proof tack coat can adopt SBS modified asphalt waterproof adhesive linkage, and thickness is about 2mm.The above-mentioned modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre can adopt single layer structure; Take all factors into consideration the load-carrying and the mode of occupation of present domestic bridge; The above-mentioned modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre is preferably the modified asphalt SMA 10/20 that bilayer is mixed high temperature resistance polyester fiber or steel fibre, and middle with the modified emulsifying asphalt bonding, its thickness is H; According to the general value 80～100mm of load-carrying grade H, every layer of about 40～50mm.Modified asphalt SMA surface layer and every layer thickness also can be got consistently with undertaking the construction of road criterion, do not change prescription when mixing fiber.
The step of mating formation of the paving structure of above-mentioned girder steel bridge floor is:
The first step: be welded on the girder steel top board bent axle shape reinforcing bar is crisscross, form the shear reinforcement stratum reticulare; Second step: on the girder steel top board after the rust cleaning, lay the epoxy waterproof tack coat; The 3rd step: the water coagulation soil layer of setting up defences on epoxy waterproof tack coat upper berth; The 4th step: on the waterproof concrete layer, lay the waterproof tack coat; The 5th step: on water-proof tack coat, lay the modified asphalt SMA surface layer, form the whole paving structure of bridge floor.
Claims (6)
1. the paving structure of a girder steel bridge floor; It is characterized in that: comprise the shear reinforcement stratum reticulare that is criss-cross arranged and forms by bent axle shape reinforcing bar that is welded on the girder steel top board; Be laid on the epoxy waterproof tack coat on the girder steel top board; Be laid on the waterproof concrete layer on the epoxy waterproof tack coat, be laid on the water-proof tack coat on the waterproof concrete layer and be laid on the modified asphalt SMA surface layer of mixing high temperature resistance polyester fiber or steel fibre on the water-proof tack coat; The embedding of said waterproof concrete layer is laid in the shear reinforcement stratum reticulare, and its upper surface exceeds shear reinforcement stratum reticulare upper end.
2. according to the paving structure of the said girder steel bridge floor of claim 1, it is characterized in that: the bent axle shape reinforcing bar that is criss-cross arranged in the said shear reinforcement stratum reticulare is positive and negative 45 ° of angles with the direction of traffic of bridge respectively.
3. according to the paving structure of the said girder steel bridge floor of claim 1, it is characterized in that: the spacing in the said shear reinforcement stratum reticulare between the adjacent reinforcing bar is 400mm.
4. according to the deck installation structure of the said girder steel of claim 1, it is characterized in that: the diameter of reinforcing bar is 10～14mm in the said shear reinforcement stratum reticulare.
5. according to the paving structure of the said girder steel bridge floor of claim 1, it is characterized in that: the upper surface of said waterproof concrete layer exceeds shear reinforcement stratum reticulare upper end 10mm.
6. according to the paving structure of the said girder steel bridge floor of claim 1, it is characterized in that: said epoxy waterproof tack coat is double-deck epoxy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202329195U CN202247583U (en) | 2011-07-04 | 2011-07-04 | Pavement structure of steel girder bridge floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202329195U CN202247583U (en) | 2011-07-04 | 2011-07-04 | Pavement structure of steel girder bridge floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202247583U true CN202247583U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202329195U Expired - Lifetime CN202247583U (en) | 2011-07-04 | 2011-07-04 | Pavement structure of steel girder bridge floor |
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| Country | Link |
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| CN (1) | CN202247583U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290755A (en) * | 2013-05-29 | 2013-09-11 | 东南大学 | Asphalt mixture pinning reinforcement structure and construction method thereof |
| CN103374882A (en) * | 2013-07-02 | 2013-10-30 | 华南理工大学 | Rigid pavement construction on steel deck and construction method thereof |
| CN104278630A (en) * | 2014-10-24 | 2015-01-14 | 武汉大学 | Steel box girder bridge deck pavement layer with high stability and high vibration resistance |
| CN104805750A (en) * | 2015-03-31 | 2015-07-29 | 招商局重庆交通科研设计院有限公司 | Compound reflection preventing structure applicable to heavy-load traffic condition as well as application and production method of compound reflection preventing structure |
-
2011
- 2011-07-04 CN CN2011202329195U patent/CN202247583U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290755A (en) * | 2013-05-29 | 2013-09-11 | 东南大学 | Asphalt mixture pinning reinforcement structure and construction method thereof |
| CN103290755B (en) * | 2013-05-29 | 2015-11-18 | 东南大学 | Bituminous mixture pinning strengthens structure and construction method thereof |
| CN103374882A (en) * | 2013-07-02 | 2013-10-30 | 华南理工大学 | Rigid pavement construction on steel deck and construction method thereof |
| CN104278630A (en) * | 2014-10-24 | 2015-01-14 | 武汉大学 | Steel box girder bridge deck pavement layer with high stability and high vibration resistance |
| CN104278630B (en) * | 2014-10-24 | 2016-03-02 | 武汉大学 | A kind of high stability height antivibration performance steel box girder bridge floor paving layer |
| CN104805750A (en) * | 2015-03-31 | 2015-07-29 | 招商局重庆交通科研设计院有限公司 | Compound reflection preventing structure applicable to heavy-load traffic condition as well as application and production method of compound reflection preventing structure |
| CN104805750B (en) * | 2015-03-31 | 2017-06-13 | 招商局重庆交通科研设计院有限公司 | Suitable for the manufacture method of the compound anti-antistructure of Heavy Traffic condition |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |