CN103643631A - Cement concrete bridge deck pavement layer with temperature adjusting function - Google Patents
Cement concrete bridge deck pavement layer with temperature adjusting function Download PDFInfo
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- CN103643631A CN103643631A CN201310621679.1A CN201310621679A CN103643631A CN 103643631 A CN103643631 A CN 103643631A CN 201310621679 A CN201310621679 A CN 201310621679A CN 103643631 A CN103643631 A CN 103643631A
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Abstract
The invention discloses a cement concrete bridge deck pavement layer with a temperature adjusting function and belongs to the technical field of bridge construction. The cement concrete bridge deck pavement layer is composed of fiber reinforcement polymer (FRP) ribs, hollow FRP ribs, hollow FRP clamping pipes and cement concrete. The FRP ribs are distributed in the bridge deck pavement layer evenly and longitudinally, the hollow FRP ribs are distributed in the bridge deck pavement layer evenly and transversely, adjacent two hollow FRP ribs are connected through the hollow FRP clamping pipes, the hollow FRP ribs and the hollow FRP clamping pipes are connected to form communicated hollow ducts, and water inlets and water outlets are formed in the hollow ducts. By means of the cement concrete bridge deck pavement layer, the internal temperature of the cement concrete can be effectively adjusted, development of the cement concrete strength is guaranteed, cracks are reduced, ice and snow on the bridge surface in winter can be melted fast, damage of deicing salt on a bridge main body structure is removed, and the cement concrete bridge deck pavement layer has great significance on prolonging the service life of a bridge.
Description
Technical field
The present invention relates to bridge construction technical field, particularly relate to a kind of Cement Concrete Deck Paving Course with temp regulating function.
Background technology
Bridge deck pavement is a kind of special accessory structure in bridge engineering; mainly play protection bridge construction main body and provide comfortable, safe surface feature effect for driving a vehicle; also to bear the direct effect of wheel load simultaneously, and the effect of bearing extraneous load together with girder.Cement Concrete Deck Paving Course is one of primary structure form of deck paving, is mainly used in the situation that the bridge main body rigidity of structure is larger, while being reinforced concrete structure as girder.
Cement Concrete Deck Paving Course is that large area is exposed to airborne thin-slab structure, concrete surface very easily produces crack, after crack occurs, the anti-permeability performance of bridge deck pavement significantly reduces, cause rainwater or hazardous medium to infiltrate in the layer of mating formation and cause corrosion of steel bar, thereby bridge deck pavement is damaged.After Winter Snow, bridge floor easily freezes, and for guaranteeing the normal current of bridge floor, at bridge floor, using deicer salts is one of Main Means thawing ice and snow.Due to a large amount of uses of deicer salts, cause chlorion wherein to infiltrate in bridge deck pavement and bridge main body structure, cause corrosion of steel bar, cause potential safety hazard.From the use present situation of bridge, because cement concrete produces, bridge deck pavement and the agent structure that crack and corrosion of steel bar cause ftractures, breakage has become one of Major Diseases of bridge construction.The too early degeneration of the structure function causing due to reinforcement corrosion or the application life that Lack of support has shortened structure greatly.In addition, bridge deck pavement belongs to large area concrete structure, and the heat of hydration producing in concrete construction makes non-uniform temperature in concrete, easily occurs crack, has a strong impact on workmanship and normal use.
Fiber-reinforced polymer (FRP) muscle is as a kind of advanced composite material (ACM) with features such as high-strength, lightweight, corrosion-resistant, endurances, use it in bridge deck pavement, can replace traditional reinforcing bar directly stressed, solve the corrosion of steel bar problem in bridge deck pavement, but and the corrosion of steel bar problem in the bridge main body structure that unresolved bridge floor freezes or deicer salts causes.
Summary of the invention
The present invention is directed to the disease that existing Cement Concrete Deck Paving Course easily produces crack and corrosion of steel bar, and the normal rough sledding of using of freezed in winter impact, a kind of Cement Concrete Deck Paving Course with temp regulating function is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of Cement Concrete Deck Paving Course with temp regulating function, described Cement Concrete Deck Paving Course is comprised of FRP muscle, hollow FRP muscle, hollow FRP button pipe and cement concrete, FRP flaccidity of tendon and muscle is to being uniformly distributed in bridge deck pavement, hollow FRP muscle is laterally uniformly distributed in bridge deck pavement, adjacent two hollow FRP muscle connect by hollow FRP button pipe, described hollow FRP muscle and hollow FRP button pipe are connected to form the hollow duct of connection, and described hollow duct is provided with water inlet and delivery port.
The two ends of described hollow FRP muscle are provided with perpendicular to hollow FRP muscle and the termination that is structure as a whole with it, and the two ends of hollow FRP button pipe are provided with perpendicular to hollow FRP button pipe and the termination that is structure as a whole with it.
The termination length of described hollow FRP muscle is 20 ㎜, and the termination length of described hollow FRP button pipe is 10 ㎜.
Described hollow FRP muscle adopts construction structure glue to be connected with hollow FRP button pipe.
Described hollow FRP muscle and hollow FRP button pipe include hollow duct, and described hollow duct outer peripheral face is axially enclosed with the glue matrix forming with polymer and metal dust, in described glue matrix, is also provided with fiber reinforced material.
Described polymer is a kind of, two or more any combination in epoxy resin, vinyl esters or unsaturated polyester (UP).
Described metal dust is iron powder, aluminium powder or comminuted steel shot.
Described fiber reinforced material is carbon fiber, glass fiber, aramid fiber, polyethylene fibre or basalt fibre.
Described FRP muscle diameter is 10 ~ 12 ㎜, and described hollow FRP muscle internal diameter is 10 ㎜, and described hollow FRP button bore is 16 ㎜.
Useful good effect of the present invention is: the Cement Concrete Deck Paving Course with temp regulating function that the present invention proposes, can effectively regulate cement concrete internal temperature, guarantee the development of cement concrete strength, reduce the generation in crack, can effectively solve because the bridge deck pavement disease problem that construction temperature, maintenance environment and the foster means of pipe etc. cause, can melt fast bridge floor ice and snow in winter simultaneously, eliminate the infringement of deicer salts to bridge main body structure, significant application life to extending bridge.
Accompanying drawing explanation
Fig. 1 is the structural representation of hollow FRP muscle of the present invention;
Fig. 2 is the structural representation of hollow FRP button pipe of the present invention;
Fig. 3 is structural representation of the present invention;
Fig. 4 is hollow FRP muscle of the present invention and button pipe generalized section.
In figure: 1, water inlet, 2, delivery port, 3, FRP muscle, 4, hollow FRP muscle, 5, hollow FRP detains pipe, 6, hollow FRP muscle termination, 7, hollow FRP detains pipe end, 8, hollow duct, 9, fiber reinforced material, 10, metal dust, 11, polymer.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Embodiment mono-
Referring to Fig. 1-Fig. 4, a kind of Cement Concrete Deck Paving Course with temp regulating function of the present invention, described Cement Concrete Deck Paving Course is comprised of FRP muscle 3, hollow FRP muscle 4, hollow FRP button pipe 5 and cement concrete, FRP muscle 3 is longitudinally uniformly distributed in bridge deck pavement, hollow FRP muscle 4 is laterally uniformly distributed in bridge deck pavement, adjacent two hollow FRP muscle 4 connect by hollow FRP button pipe 5, described hollow FRP muscle 4 and hollow FRP button pipe 5 are connected to form the hollow duct of connection, and described hollow duct is provided with water inlet 1 and delivery port 2.The two ends of described hollow FRP muscle 4 are provided with perpendicular to hollow FRP muscle 4 and the termination 6 that is structure as a whole with it, and the two ends of hollow FRP button pipe 5 are provided with perpendicular to hollow FRP button pipe 5 and the termination 7 that is structure as a whole with it.
Described hollow FRP muscle comprises hollow duct 8, and described hollow duct 8 outer peripheral faces are axially enclosed with the glue matrix forming with polymer 11 and metal dust 10, in described glue matrix, are also provided with fiber reinforced material 9.
Described polymer 11 is epoxy vinyl ester resin, fiber reinforced material 9 is glass fiber, metal dust 10 is aluminium powder, the weight of fiber glass reinforcement 9 accounts for hollow glass fibre and strengthens 60% of polymer (GFRP) muscle 4 weight, the weight of glue matrix accounts for hollow glass fibre and strengthens 40% of polymer (GFRP) muscle 4 weight, and the weight of aluminium powder 10 accounts for 20% of glue matrix weight.
The internal construction of described hollow GFRP button pipe 5 is identical with the internal construction of hollow GFRP muscle 4.
Described FRP muscle diameter is 10 ~ 12 ㎜, and described hollow FRP muscle internal diameter is 10 ㎜, and described hollow FRP button bore is 16 ㎜.
During construction, selecting diameter is the vertical, horizontal reinforcing bar that the GFRP muscle 3 of 12 ㎜ and hollow GFRP muscle that internal diameter is 10 ㎜ 4 replace in Cement Concrete Deck Paving Courses, along deck paving, be wherein longitudinally GFRP muscle 3, along deck paving, be laterally hollow GFRP muscle 4, the connection employing internal diameter of transversal hollow GFRP muscle is that hollow GFRP button pipe 5 the brushing construction structure glue of 16 ㎜ connects.
GFRP muscle 3 is longitudinally evenly placed on to the lower floor of bridge deck pavement, hollow GFRP muscle 4 is laterally evenly placed on above GFRP muscle 3, and upwards erect hollow GFRP muscle 4 terminations 6, at vertical and horizontal GFRP muscle infall, adopt tied silk to carry out colligation, so that fixedly GFRP muscle 3 and hollow GFRP muscle 4 positions do not change.After the colligation of muscle material, at hollow GFRP button pipe 5 termination 7 inwall brushing construction structure glues, and hollow GFRP button pipe 5 terminations 7 are oppositely buckled in above hollow GFRP muscle 4 terminations 6, after building structure adhesive curing, whether the hollow duct that adopts douche check transversal hollow GFRP muscle 4 to form is unobstructed.If unobstructed, can carry out next procedure, carry out building of cement concrete; If blockage phenomenon, need fix a breakdown, guarantee the unobstructed of hollow duct.
In whole bridge deck pavement, be not to only have a water inlet 1 and delivery port 2, the quantity of concrete water inlet and delivery port can be divided according to the requirement of deck paving area, the ability of pouring water and longitudinal expansion joint subregion.
During winter construction, cement concrete needs the maintenance that heats up after building.Now can add hot water (water temperature is determined according to temperature) at water inlet 1 place, hollow duct, delivery port 2 places carry out the circulation of hot water, heat is passed to muscle net cement concrete around by hollow GFRP muscle 4 tube walls, at cement concrete surface, be incubated covering simultaneously, reach the temperature environment that cement concrete aquation needs, guarantee the development of cement concrete strength, can effectively reduce the generation of external crack simultaneously.
In the bridge operation phase, after Winter Snow, bridge floor easily freezes, and affects road.For removing bridge floor ice and snow, now can adopt at water inlet 1 place, hollow duct and pour into hot water, delivery port 2 places carry out the circulation of hot water, heat passes to the cement concrete of upper face by hollow GFRP muscle 4 tube walls, make bridge floor there will not be icing phenomenon or can thaw ice and snow fast, guarantee the normal current of bridge.
During hot weather construction, because large area bridge deck pavement cement concrete internal temperature is higher, because the effect of thermal stresses is easily ftractureed, can pour into cold water at water inlet 1 place, hollow duct, delivery port 2 places carry out the circulation of cold water, reduce the temperature of muscle net ambient water cement concrete, control concrete cracking.
Embodiment bis-
The present embodiment and embodiment mono-structure are basic identical, its difference is, described polymer 11 is unsaturated polyester (UP), fiber reinforced material 9 is carbon fiber, metal dust 10 is iron powder, the weight of carbon fibre reinforcement 9 accounts for hollow carbon fiber and strengthens 65% of polymer reinforcement 4 weight, and the weight of glue matrix accounts for hollow carbon fiber and strengthens 35% of polymer reinforcement 4 weight, and the weight of iron powder 10 accounts for 25% of glue matrix weight.
Embodiment tri-
The present embodiment and embodiment mono-structure are basic identical, its difference is, described polymer 11 is epoxy resin, fiber reinforced material 9 is basalt fibre, metal dust 10 is comminuted steel shot, the weight of basalt fibre reinforcing material 9 accounts for 75% of hollow basalt fiber-reinforced polymer muscle 4 weight, and the weight of glue matrix accounts for 25% of hollow basalt fiber-reinforced polymer muscle 4 weight, and the weight of powdered steel 10 accounts for 15% of glue matrix weight.
Claims (9)
1. a Cement Concrete Deck Paving Course with temp regulating function, it is characterized in that: described Cement Concrete Deck Paving Course is comprised of FRP muscle, hollow FRP muscle, hollow FRP button pipe and cement concrete, FRP flaccidity of tendon and muscle is to being uniformly distributed in bridge deck pavement, hollow FRP muscle is laterally uniformly distributed in bridge deck pavement, adjacent two hollow FRP muscle connect by hollow FRP button pipe, described hollow FRP muscle and hollow FRP button pipe are connected to form the hollow duct of connection, and described hollow duct is provided with water inlet and delivery port.
2. the Cement Concrete Deck Paving Course with temp regulating function according to claim 1, it is characterized in that: the two ends of described hollow FRP muscle are provided with perpendicular to hollow FRP muscle and the termination that is structure as a whole with it, the two ends of hollow FRP button pipe are provided with perpendicular to hollow FRP button pipe and the termination that is structure as a whole with it.
3. the Cement Concrete Deck Paving Course with temp regulating function according to claim 2, is characterized in that: the termination length of described hollow FRP muscle is 20 ㎜, and the termination length of described hollow FRP button pipe is 10 ㎜.
4. the Cement Concrete Deck Paving Course with temp regulating function according to claim 1, is characterized in that: described hollow FRP muscle adopts construction structure glue to be connected with hollow FRP button pipe.
5. the Cement Concrete Deck Paving Course with temp regulating function according to claim 1, it is characterized in that: described hollow FRP muscle and hollow FRP button pipe include hollow duct, described hollow duct outer peripheral face is axially enclosed with the glue matrix forming with polymer and metal dust, in described glue matrix, is also provided with fiber reinforced material.
6. the Cement Concrete Deck Paving Course with temp regulating function according to claim 5, is characterized in that: described polymer is a kind of, two or more any combination in epoxy resin, vinyl esters or unsaturated polyester (UP).
7. the Cement Concrete Deck Paving Course with temp regulating function according to claim 5, is characterized in that: described metal dust is iron powder, aluminium powder or comminuted steel shot.
8. the Cement Concrete Deck Paving Course with temp regulating function according to claim 5, is characterized in that: described fiber reinforced material is carbon fiber, glass fiber, aramid fiber, polyethylene fibre or basalt fibre.
9. the Cement Concrete Deck Paving Course with temp regulating function according to claim 1, is characterized in that: described FRP muscle diameter is 10 ~ 12 ㎜, and described hollow FRP muscle internal diameter is 10 ㎜, and described hollow FRP button bore is 16 ㎜.
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Cited By (5)
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| CN104005317A (en) * | 2014-05-15 | 2014-08-27 | 江苏绿材谷新材料科技发展有限公司 | Conductive heating composite bar for pavement snow melting and deicing and preparation method thereof |
| WO2016081847A1 (en) * | 2014-11-20 | 2016-05-26 | Structural Technologies Ip, Llc | Segmental duct coupler devices, systems, and methods |
| CN106049277A (en) * | 2016-05-30 | 2016-10-26 | 哈尔滨金玉科技开发有限公司 | Bridge panel |
| CN106284021A (en) * | 2016-08-01 | 2017-01-04 | 绍兴文理学院 | The two-way, two-pipe arrangement of snow melt pipeline and method for arranging |
| CN113846529A (en) * | 2021-10-21 | 2021-12-28 | 中建七局第四建筑有限公司 | Bridge deck deicing temperature control system and method |
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| CN113846529A (en) * | 2021-10-21 | 2021-12-28 | 中建七局第四建筑有限公司 | Bridge deck deicing temperature control system and method |
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| CN103643631B (en) | 2015-08-26 |
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