CN203256612U - Steel bridge deck pavement structure - Google Patents
Steel bridge deck pavement structure Download PDFInfo
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- CN203256612U CN203256612U CN 201320071511 CN201320071511U CN203256612U CN 203256612 U CN203256612 U CN 203256612U CN 201320071511 CN201320071511 CN 201320071511 CN 201320071511 U CN201320071511 U CN 201320071511U CN 203256612 U CN203256612 U CN 203256612U
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Abstract
The utility model discloses a steel bridge deck pavement structure. The steel bridge deck pavement structure comprises a grid piece and flexible padding, wherein the grid piece is laid on a bridge deck steel plate and formed by steel grids, and the inside gaps of the steel grids are filled with the flexible padding. The upper surfaces of the steel grids and the upper surface of the flexible padding bear traffic loads together. The pavement method of the steel bridge deck pavement structure comprises the following steps that the steel grids are welded and fixed to the bridge deck steel plate, and the bottom edges of the steel grids are all welded to the steel bridge deck; the flexible padding like asphalt is sprinkled, and then macadam is bestrewn; emulsified asphalt is sprayed; rolling compaction is performed. The steel bridge deck pavement structure can enhance high temperature deformation resistance and fatigue cracking resistance of the pavement layer, and achieves the function of automatic icebreaking of the pavement layer in winter.
Description
Technical field
The utility model relates to a kind of highway construction structure, particularly the paving structure of a kind of making on Steel Bridge Deck.
Background technology
Bituminous mixture class flexibility on the existing Steel Bridge Deck layer of mating formation not only easily produces high temperature deformation class disease, comprises passing, rut, gathers around bag etc.; And because bridge surface armor plate is thin, and the system of mating formation integral rigidity is little, a little less than layer bending resistance of mating formation, easily produces fatigue crack, had a strong impact on the functional performance of the layer of mating formation, shortened the application life of the layer of mating formation.In addition, Steel Bridge Deck Pavement is frozen easily in the winter time, threatens traffic safety.
The utility model content
The purpose of this utility model provides a kind of bridge deck pavement structure, improves mat formation layer opposing high temperature deformation ability and antifatigue cracking performance; And realizing mating formation the function that independently opens ice layer winter, concrete technical scheme of the present utility model is as follows.
A kind of bridge deck pavement structure, it comprises: be laid on the mesh flake that is formed by the steel grid on the bridge surface armor plate and fill the flexible filler of steel grid internal voids.
Further improved, described steel grid is square or regular hexagon.
Further improved, the length of side of described steel grid is 30 mm ~ 100mm; The wall thickness of grid is 1mm ~ 10mm; The height of grid is 10mm ~ 25mm.
Further improved, described steel grid adopts the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation to make.
Further improved, the upper surface flush of the upper surface of flexible filler and steel grid.
Further improved, flexible filler adopts the hot-melt asphalt class material of surperficial spreading rubble, wherein, pitch adopts bi tumenf orr oad, SBS modified bitumen, rubber modified asphalt or mixes the bi tumenf orr oad of joining natural asphalt, and the thickness of its medium pitch class material is 0.1 ~ 0.2 times of height of grid; Described rubble adopts the S12 size coarse aggregate of table 7.8.3 regulation among " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
The paving method of above-mentioned bridge deck pavement structure, it comprises the steps:
The first step is processed described steel grid in blocks;
Second step is welded and fixed described steel grid at bridge surface armor plate, all is welded on the base of steel grid on the Steel Bridge Deck; Weld strength is higher than the mother metal standard; Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, the epoxy primer build is 0.05mm ~ 0.07mm;
The 3rd step, distributing asphalt class flexible filler, then spreading rubble.
The 4th step, spray mulseal, mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation; The mulseal spread quantity is 0.3kg/m
2~ 0.6 kg/m
2
In the 5th step, roll.
Further improved, in the 3rd step, the spread temperature of pitch class material is 160 ℃ ~ 190 ℃; Spread thickness is 0.1 ~ 0.2 times of layer thickness of mating formation; The spread time interval of pitch class material and rubble is no more than 2min; The control method of described rubble spreading amount is: roll completely, rubble surface flushes with surface mesh.
Further improved, the 5th step is described rolls that to adopt gross mass be the rubber-tyred roller of 25t ~ 30t, rolls 2 ~ 4 times on the rubble surface.
Further improved, the described loose rubble in rear cleaning surface that rolls of the 5th step when treating that pitch class material surface temperature is reduced to below 60 ℃, gets final product open to traffic.
Compared with prior art, the beneficial effects of the utility model:
(1) layer of mating formation of the bituminous mixture class on the existing Steel Bridge Deck easily produces high temperature deformation class disease, comprises passing, rut, gathers around bag etc.The utility model steel grid and flexible filler bear Driving Loading jointly, improved the integral rigidity of the layer of mating formation, and the steel grid play restriction to the distortion of flexible filler in the layer of mating formation, and have improved the non-deformability of layer under heavy duty and high temperature of mating formation;
(2) layer of mating formation of the bituminous mixture class on the existing Steel Bridge Deck, because bridge surface armor plate is thin, the system of mating formation integral rigidity is little, a little less than layer bending resistance of mating formation, easily produces fatigue crack, has had a strong impact on the functional performance of the layer of mating formation, and has shortened the application life of the layer of mating formation.The utility model steel grid has increased the integral rigidity of the system of mating formation, and has improved the anti-bending strength of layer of mating formation, thereby has strengthened the resisting fatigue cracking ability of the layer of mating formation, significant prolongation the application life of the layer of mating formation;
(3) compressive strain of flexible filler was pulverized so that be attached to the ice on the layer surface of mating formation, thereby was had the function that independently opens ice obviously greater than the steel grid under Driving Loading winter.
Description of drawings
Fig. 1 is the schematic perspective view of the paving structure of square lattice composition.
Fig. 2 is the top view of the paving structure of square lattice composition.
Fig. 3 is wheel tracking test paving structure top view (unit: mm) in the embodiment.
Fig. 4 is fatigue test girder test specimen paving structure top view (unit: mm) in the embodiment.
Fig. 5 is embodiment fatigue test girder test specimen and load mode lateral view (unit: mm) thereof.
The specific embodiment
Below in conjunction with example enforcement of the present utility model is described in further detail, but enforcement of the present utility model and protection domain are not limited to this.
Embodiment 1Spread bi tumenf orr oad and rubble in square steel grid
(1) paving structure and material
Realized the utility model paving structure at certain speedway Steel Bridge Deck.Lay the mesh flake that steel grid 1 forms at bridge surface armor plate 3, and in steel grid 1 internal voids, filled flexible filler 2.The upper surface of steel grid 1 and the upper surface of flexible filler bear Driving Loading jointly, as shown in Figure 1.
As shown in Figure 2, steel grid 1 is square.The length of side of grid 1 is 30 mm; The wall thickness of grid 1 is 1mm; The height of grid 1 namely mat formation the layer thickness, be 10mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts No. 70 bi tumenf orr oads of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The thickness of pitch is 0.1 times of layer thickness of mating formation.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
(2) job practices
The first step, the steel grid that factory process is in blocks.
Second step is welded and fixed the steel grid at bridge surface armor plate, and the base of steel grid all is welded on the Steel Bridge Deck.Weld strength is higher than the mother metal standard and gets final product.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.05mm.
The 3rd step, distributing asphalt class flexible filler, then spreading rubble.
The spread temperature of pitch class material is 160 ℃; Spread thickness is 0.1 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 1min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
In the 4th step, spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.3kg/m
2
In the 5th step, roll.Adopting gross mass is the rubber-tyred roller of 25t, rolls 2 times on the rubble surface.
At last, the loose rubble in cleaning surface.Behind the 20min, after measured, the temperature of asphalt surface has been reduced to 50 ℃, i.e. open to traffic.
Embodiment 2Spread SBS modified bitumen and rubble in regular hexagon steel grid
(1) paving structure and material
Realized the utility model paving structure at certain speedway Steel Bridge Deck.Lay the mesh flake that steel grid 1 forms at bridge surface armor plate 3, and in steel grid 1 internal voids, filled flexible filler 2.The upper surface of steel grid 1 and the upper surface of flexible filler bear Driving Loading jointly.
Wherein, steel grid 1 is regular hexagon.The length of side of grid 1 is 100mm; The wall thickness of grid 1 is 10mm; The height of grid 1 namely mat formation the layer thickness, be 25mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts the I-D type SBS modified bitumen of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The thickness of pitch is 0.2 times of layer thickness of mating formation.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
(2) job practices
The first step, the steel grid that factory process is in blocks.
Second step is welded and fixed the steel grid at bridge surface armor plate, and the base of steel grid all is welded on the Steel Bridge Deck.Weld strength is higher than the mother metal standard.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.07mm.
The 3rd step, distributing asphalt class flexible filler, then spreading rubble.
The spread temperature of pitch class material is 190 ℃; Spread thickness is 0.2 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 2min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
In the 4th step, spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.6 kg/m
2
In the 5th step, roll.Adopting gross mass is the rubber-tyred roller of 30t, rolls 4 times on the rubble surface.
At last, the loose rubble in cleaning surface.Behind the 30min, after measured, the temperature of asphalt surface has been reduced to 40 ℃, i.e. open to traffic.
Embodiment 3Spread rubber modified asphalt and rubble in square steel grid
(1) paving structure and material
Realized the utility model paving structure at certain speedway Steel Bridge Deck.Lay the mesh flake that steel grid 1 forms at bridge surface armor plate 3, and in steel grid 1 internal voids, filled flexible filler 2.The upper surface of steel grid 1 and the upper surface of flexible filler bear Driving Loading jointly.
Wherein, steel grid 1 is square.The length of side of grid 1 is 30 mm; The wall thickness of grid 1 is 1mm; The height of grid 1 namely mat formation the layer thickness, be 10mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts rubber modified asphalt.The thickness of pitch is 0.1 times of layer thickness of mating formation.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
(2) job practices
The first step, the steel grid that factory process is in blocks.
Second step is welded and fixed the steel grid at bridge surface armor plate, and the base of steel grid all is welded on the Steel Bridge Deck.Weld strength should be higher than the mother metal standard.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.05mm.
The 3rd step, distributing asphalt class flexible filler, then spreading rubble.
The spread temperature of pitch class material is 190 ℃; Spread thickness is 0.1 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 2min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
In the 4th step, spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.3kg/m
2
In the 5th step, roll.Adopting gross mass is the rubber-tyred roller of 25t, rolls 2 times on the rubble surface.
At last, the loose rubble in cleaning surface.Behind the 10min, after measured, the temperature of asphalt surface has been reduced to 50 ℃, i.e. open to traffic.
Embodiment 4Spread is mixed bi tumenf orr oad and the rubble of joining natural asphalt in regular hexagon steel grid
(1) paving structure and material
Realized the utility model paving structure at certain speedway Steel Bridge Deck.Lay the mesh flake that steel grid 1 forms at bridge surface armor plate 3, and in steel grid 1 internal voids, filled flexible filler 2.The upper surface of steel grid 1 and the upper surface of flexible filler bear Driving Loading jointly.
Wherein, steel grid 1 is regular hexagon.The length of side of grid 1 is 100mm; The wall thickness of grid 1 is 10mm; The height of grid 1 namely mat formation the layer thickness, be 25mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts and mixes the bi tumenf orr oad of joining natural asphalt.Natural asphalt adopts the Trinida lake asphalt, and the mass percent of itself and bi tumenf orr oad is 3:7.The thickness of pitch class material is 0.2 times of layer thickness of mating formation.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
(2) job practices
The first step, the steel grid that factory process is in blocks.
Second step is welded and fixed the steel grid at bridge surface armor plate, and the base of steel grid all is welded on the Steel Bridge Deck.Weld strength should be higher than the mother metal standard.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.07mm.
The 3rd step, distributing asphalt class flexible filler, then spreading rubble.
The spread temperature of pitch class material is 190 ℃; Spread thickness is 0.2 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 1min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
In the 4th step, spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.6 kg/m
2
In the 5th step, roll.Adopting gross mass is the rubber-tyred roller of 30t, rolls 4 times on the rubble surface.
At last, the loose rubble in cleaning surface.Behind the 20min, after measured, the temperature of asphalt surface has been reduced to 50 ℃, i.e. open to traffic.
The wheel tracking test of the plate-like test specimen under (1) 60 ℃
Experimental material:
As shown in Figure 3, adopt the plate-like test specimen of long 300mm, wide 300mm, thick 39mm to carry out wheel tracking test.Wherein, steel grid 1 is square.The length of side of grid 1 is 100mm; The wall thickness of grid 1 is 10mm; The height of grid 1 namely mat formation the layer thickness, be 25mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.Bridge surface armor plate 3 thickness are 14mm, adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts the I-D type SBS modified bitumen of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The thickness of pitch is mat formation 0.1 times of layer thickness, i.e. 2.5mm.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
The test specimen preparation method:
The base of steel grid all is welded on the Steel Bridge Deck.Weld strength should be higher than the mother metal standard.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.05mm.
Distributing asphalt class flexible filler, then spreading rubble.The spread temperature of pitch class material is 190 ℃; Spread thickness is 0.1 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 2min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
Spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.3kg/m
2
With reference to JTG E20-2011 " highway engineering pitch and Asphalt Mixture Experiment rules " T0703-2011 " bitumen mixture specimen preparation method (rolling method) ", adopt the rolling forming machine to roll 12 on the test specimen surface and come and go.
Contrast test material for test and preparation method:
Adopt the long 300mm of steel making of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation, the steel plate of wide 300mm, thick 14mm.Spread I-D type SBS modified bitumen is as tack coat on steel plate, and thickness is 1.0mm.The spread temperature is 190 ℃.Then, at the side edge of steel plate installation form, lay heat and mix modified asphalt mixture.With reference to JTG E20-2011 " highway engineering pitch and Asphalt Mixture Experiment rules " T0703-2011 " bitumen mixture specimen preparation method (rolling method) ", adopt the rolling forming machine to roll 12 in mix surface and come and go.The thickness of layer modified asphalt mixture of mating formation after the moulding is 25mm.After the test specimen temperature is reduced to room temperature, remove the side template, be used for follow-up wheel tracking test.
Wheel tracking test method and result:
With reference to JTG E20-2011 " highway engineering pitch and Asphalt Mixture Experiment rules " T0719-2011 " asphalt mixture in track test " method.Test temperature is 60 ℃, and wheel load is 0.7MPa.After the experimental wheel of wheel rutting test machine rolls 60min, read the maximum distortion on test specimen surface, be shown in Table 1.
Table 1 wheel tracking test result
Result of the test shows that under the conditions such as identical bridge surface armor plate, pavement thickness, test temperature, load action time, the utility model paving structure test specimen surface maximum distortion average is 19% of contrast paving structure.Illustrate that the utility model steel grid and flexible filler bear Driving Loading jointly, improved the integral rigidity of the layer of mating formation, and the steel grid plays restriction to the distortion of flexible filler in the layer of mating formation, and has improved the non-deformability of layer under heavy duty and high temperature of mating formation.
The fatigue test of (2) 15 ℃ of lower girder test specimens
Experimental material:
Such as Fig. 4, shown in Figure 5, adopt the girder shape test specimen of long 300mm, wide 30mm, thick 39mm to carry out fatigue test.Wherein, steel grid 1 is square.The length of side of grid 1 is 100mm; The wall thickness of grid 1 is 10mm; The height of grid 1 namely mat formation the layer thickness, be 25mm; The raw material of steel grid adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.Bridge surface armor plate 3 thickness are 14mm, adopt the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation.Among Fig. 4,4 support when loading for fatigue test and use steel plate, identical with thickness and the material of bridge surface armor plate 3.
The upper surface flush of the upper surface of flexible filler 2 and steel grid.Flexible filler 2 adopts the hot-melt asphalt class material of surperficial spreading rubble.Wherein, pitch adopts the I-D type SBS modified bitumen of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The thickness of pitch is mat formation 0.1 times of layer thickness, i.e. 2.5mm.
Rubble adopts the S12 size coarse aggregate of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) table 7.8.3 regulation.
The test specimen preparation method:
The base of steel grid all is welded on the Steel Bridge Deck.Weld strength should be higher than the mother metal standard.Bridge surface armor plate and steel grid are adopted bead, and the surface derusting grade is the Sa3.0 level; And the spraying epoxy primer, build is 0.05mm.
Distributing asphalt class flexible filler, then spreading rubble.The spread temperature of pitch class material is 190 ℃; Spread thickness is 0.1 times of layer thickness of mating formation.The spread time interval of pitch class material and rubble is 2min.The control method of ballast grain sizes spreading amount is: roll completely, rubble surface flushes with surface mesh.
Spray mulseal.Mulseal adopts the PCR type modified emulsifying asphalt of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation.The mulseal spread quantity is 0.3kg/m
2
With reference to JTG E20-2011 " highway engineering pitch and Asphalt Mixture Experiment rules " T0703-2011 " bitumen mixture specimen preparation method (rolling method) ", adopt the rolling forming machine to roll 12 on the test specimen surface and come and go.
Contrast test material for test and preparation method:
Adopt the long 300mm of steel making of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation, the steel plate of wide 30mm, thick 14mm.Spread I-D type SBS modified bitumen is as tack coat on steel plate, and thickness is 1.0mm.The spread temperature is 190 ℃.Then, at the side edge of steel plate installation form, lay heat and mix modified asphalt mixture.With reference to JTG E20-2011 " highway engineering pitch and Asphalt Mixture Experiment rules " T0703-2011 " bitumen mixture specimen preparation method (rolling method) ", adopt the rolling forming machine to roll 12 in mix surface and come and go.The thickness of layer compound of mating formation after the moulding is 25mm.After the test specimen temperature is reduced to room temperature, remove the side template, be used for follow-up fatigue test.
Fatigue test method and result of the test:
With reference to " Runyang Changjiang Highway Bridge construction " the 5th " paving steel bridge deck " (Huang Wei chief editor, People's Transportation Press, 2006) chapter 6 composite beam fatigue test method.Adopt mid point loading fatigue test pattern shown in Figure 5.At bridge surface armor plate 3 surperficial mid point 5 place's load applications, the below is supported on respectively on 4 block plates 4 of little beam end.Adopt the MTS810 Material Testing Machine to load.The loads change waveform adopts the sine wave of Non-intermittent, and the load maximum value is 50kN, and minimum value is 200N; Loading frequency is 10Hz.Test temperature is 20 ℃.The criterion of fatigue failure is: the flexible filler in the layer of mating formation (or bituminous mixture) surface begins to occur cracking; Or the flexible filler in the layer of mating formation (or bituminous mixture) begins to occur stratification with the bridge surface armor plate bonding surface.Table 2 has provided fatigue test results.
Table 2 fatigue test results
Result of the test shows that under the conditions such as identical bridge surface armor plate, pavement thickness, test temperature, imposed load, the utility model paving structure maximum load number of times is 21.7 times of the contrast paving structure.Fatigue test results explanation: the layer of mating formation of the bituminous mixture class on the existing Steel Bridge Deck, because bridge surface armor plate is thin, the system of mating formation integral rigidity is little, a little less than layer bending resistance of mating formation, easily produces fatigue crack.The utility model steel grid has increased the integral rigidity of the system of mating formation, and has improved the anti-bending strength of layer of mating formation, thereby has strengthened the resisting fatigue cracking ability of the layer of mating formation, significant prolongation the application life of the layer of mating formation.
Claims (6)
1. bridge deck pavement structure is characterized in that comprising: be laid on the mesh flake that is formed by steel grid (1) on the bridge surface armor plate (3) and the flexible filler (2) of filling steel grid (1) internal voids.
2. a kind of bridge deck pavement structure according to claim 1 is characterized in that described steel grid is square or regular hexagon.
3. a kind of bridge deck pavement structure according to claim 1, the length of side that it is characterized in that described steel grid is 30 mm ~ 100mm; The wall thickness of grid is 1mm ~ 10mm; The height of grid is 10mm ~ 25mm.
4. a kind of bridge deck pavement structure according to claim 1 is characterized in that described steel grid adopts the steel of the Q345qC grade of GB/T714-2008 " structural steel for bridge " regulation to make.
5. a kind of bridge deck pavement structure according to claim 1 is characterized in that the upper surface flush of upper surface and the steel grid of flexible filler.
6. each described a kind of bridge deck pavement structure according to claim 1 ~ 5, it is characterized in that flexible filler adopts the hot-melt asphalt class material of surperficial spreading rubble, wherein, it is 0.1 ~ 0.2 times of height of grid that pitch adopts bi tumenf orr oad, SBS modified bitumen or rubber modified asphalt, the thickness of its medium pitch class material; Described rubble adopts the S12 size coarse aggregate of table 7.8.3 regulation among " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
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| CN 201320071511 CN203256612U (en) | 2013-02-07 | 2013-02-07 | Steel bridge deck pavement structure |
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| CN 201320071511 CN203256612U (en) | 2013-02-07 | 2013-02-07 | Steel bridge deck pavement structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114525A (en) * | 2013-02-07 | 2013-05-22 | 华南理工大学 | Steel bridge deck paving structure and paving method |
| CN103696366A (en) * | 2013-12-20 | 2014-04-02 | 浙江省交通工程建设集团有限公司第二分公司 | Pavement structure and pavement method of combined steel bridge deck |
| CN104195955A (en) * | 2014-09-02 | 2014-12-10 | 中交第二公路工程局有限公司 | Assembling type bridge deck pavement method of large-span steel bridge |
| CN106758812A (en) * | 2016-12-19 | 2017-05-31 | 同济大学 | A kind of UHPC pours orthotropic steel bridge deck combining structure and preparation method thereof |
-
2013
- 2013-02-07 CN CN 201320071511 patent/CN203256612U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114525A (en) * | 2013-02-07 | 2013-05-22 | 华南理工大学 | Steel bridge deck paving structure and paving method |
| CN103114525B (en) * | 2013-02-07 | 2016-01-06 | 华南理工大学 | A kind of bridge deck pavement structure and paving method thereof |
| CN103696366A (en) * | 2013-12-20 | 2014-04-02 | 浙江省交通工程建设集团有限公司第二分公司 | Pavement structure and pavement method of combined steel bridge deck |
| CN103696366B (en) * | 2013-12-20 | 2015-07-22 | 浙江省交通工程建设集团有限公司第二分公司 | Pavement structure and pavement method of combined steel bridge deck |
| CN104195955A (en) * | 2014-09-02 | 2014-12-10 | 中交第二公路工程局有限公司 | Assembling type bridge deck pavement method of large-span steel bridge |
| CN104195955B (en) * | 2014-09-02 | 2016-08-17 | 中交第二公路工程局有限公司 | A kind of big-span steel bridge unit construction bridge surface paving method |
| CN106758812A (en) * | 2016-12-19 | 2017-05-31 | 同济大学 | A kind of UHPC pours orthotropic steel bridge deck combining structure and preparation method thereof |
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