CN216920016U - Anti-fatigue steel bridge deck - Google Patents
Anti-fatigue steel bridge deck Download PDFInfo
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- CN216920016U CN216920016U CN202220732823.3U CN202220732823U CN216920016U CN 216920016 U CN216920016 U CN 216920016U CN 202220732823 U CN202220732823 U CN 202220732823U CN 216920016 U CN216920016 U CN 216920016U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model discloses an anti-fatigue steel bridge deck plate, which comprises a middle corrugated steel plate, an upper steel plate and a lower steel plate which are respectively positioned above and below the middle corrugated steel plate, lateral steel plates positioned at two sides of the middle corrugated steel plate and transverse steel plates positioned at the front end and the rear end of the middle corrugated plate, wherein the upper steel plate, the lower steel plate, the transverse steel plates and the lateral steel plates form a coating structure for the middle corrugated steel plate; the anti-fatigue performance of the orthotropic steel bridge deck plate can be improved, and the anti-fatigue steel bridge deck plate has the characteristics of light weight, strong anti-bending torque and high strength.
Description
Technical Field
The utility model relates to the field of bridges, in particular to an anti-fatigue steel bridge deck.
Background
The orthotropic steel bridge deck plate structure which is most widely applied at present consists of a deck plate, transverse stiffening ribs and longitudinal stiffening ribs welded on the deck plate, and a waterproof layer and a paving layer of 40-80 mm are arranged on the deck plate. According to the stress characteristics of the orthotropic steel bridge deck plate, the stress influence line is short, so that obvious stress concentration can occur in connection details, and meanwhile, the number of welding seams and geometric discontinuous parts are in numerous initial defects, so that fatigue cracks are more easily generated under the action of repeated vehicle loads. In addition, the steel structure bridge deck slab has heavy weight, more materials, more types of required materials and higher cost. In the steel bridge deck structure of patent CN 207392049U, the corrugated structure is prone to cause stress concentration problem, and further prone to cause fatigue crack of the corrugated steel plate.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to overcome the defects in the prior art, and provides an anti-fatigue steel bridge deck, which can improve the fatigue resistance of an orthotropic steel bridge deck, and has the characteristics of light weight, strong bending torque, and high strength.
The utility model discloses an anti-fatigue steel bridge deck plate, which comprises a middle corrugated steel plate, an upper steel plate, a lower steel plate, lateral steel plates and transverse steel plates, wherein the upper steel plate and the lower steel plate are respectively positioned above and below the middle corrugated steel plate, the lateral steel plates are positioned on two sides of the middle corrugated steel plate, and the transverse steel plates are positioned at the front end and the rear end of the middle corrugated steel plate;
further, the bending parts of the upper corrugated plate and the lower corrugated plate are in smooth transition to form an R angle of 60 degrees;
further, the horizontal sections of the upper corrugated plate and the lower corrugated plate are fixed on the connecting steel plate;
further, the upper corrugated plate and the lower corrugated plate are fixed to the connecting steel plate through bolts;
further, the upper steel plate and the lower steel plate are both composed of steel panels and a polyurethane core layer positioned between the two steel panels;
further, the polyurethane core layer is uniformly and densely filled in a cavity formed by the upper steel panel and the lower steel panel and is bonded and fixed with the steel panels;
further, the lateral steel plate is a channel steel.
The beneficial effects of the utility model are: the anti-fatigue steel bridge deck disclosed by the utility model can improve the fatigue resistance of an orthotropic steel bridge deck, and has the characteristics of light weight, strong bending torque and high strength.
Drawings
The utility model is further described below with reference to the following figures and examples:
fig. 1 is a schematic cross-sectional structure of the present invention.
Detailed Description
Fig. 1 is a schematic cross-sectional structure of the present invention. As shown in the figure: the anti-fatigue steel bridge deck plate comprises a middle corrugated steel plate, an upper steel plate 1 and a lower steel plate 2 which are respectively positioned above and below the middle corrugated steel plate, lateral steel plates 3 positioned on two sides of the middle corrugated steel plate and transverse steel plates positioned at the front end and the rear end of the middle corrugated steel plate, wherein the upper steel plate 1, the lower steel plate 2, the transverse steel plates and the lateral steel plates 3 form a coating structure for the middle corrugated steel plate, the middle corrugated steel plate comprises an upper corrugated plate 4, a lower corrugated plate 5 and a connecting steel plate 6 positioned between the upper corrugated plate 4 and the lower corrugated plate 5, the corrugated curves of the upper corrugated steel plate and the lower corrugated steel plate comprise horizontal segments and arc segments which are alternately and continuously arranged, and the upper corrugated plate 4 and the lower corrugated plate 5 are fixed on the connecting steel plate 6 in a manner of being symmetrical to each other along the connecting steel plate 6; the term "horizontal segments and arc segments arranged alternately and continuously" means that a segment of horizontal straight line and a segment of arc segment are arranged alternately and continuously to form a waveform, and the formed waveform curve is a combination of straight lines and arc lines. The combined use of the upper corrugated plate 4 and the lower corrugated plate 5 can completely replace the connecting welding seam of the top plate and the longitudinal stiffening rib, and has strong bearing capacity and can consume a part of external force load energy. The anti-fatigue performance of the orthotropic steel bridge deck plate can be improved through the coating structures of the middle corrugated steel plate and the corrugated steel plate, and the orthotropic steel bridge deck plate has the characteristics of light weight, strong anti-bending torque and high strength.
In the embodiment, the bending positions of the upper corrugated plate 4 and the lower corrugated plate 5 are in smooth transition to form an R angle of 60 degrees; the anti-damage strength of the bending part is improved, and the damage caused by stress concentration of the bending part is avoided.
In the embodiment, the horizontal sections of the upper corrugated plate 4 and the lower corrugated plate 5 are fixed on the connecting steel plate 6; the upper corrugated plate 4 and the lower corrugated plate 5 are fixed on a connecting steel plate 6 through bolts; the initial defects of the number of welding seams and the positions of geometric discontinuity are avoided, and fatigue cracks are not easy to generate under the action of vehicle load.
In the embodiment, the upper steel plate 1 and the lower steel plate 2 are both composed of steel panels and a polyurethane core layer positioned between the two steel panels, and the polyurethane core layer is uniformly and densely filled in a cavity formed by the upper steel panel and the lower steel panel and is bonded and fixed with the steel panels; the arrangement of the core layer can bear larger shearing force; the core layer plays a supporting role between the upper layer steel panel and the lower layer steel panel, so that the bending rigidity of the section is improved; meanwhile, the dead weight of the steel plate can be reduced. In addition, polyurethane elastomers have sufficient modulus of elasticity and stiffness so that steel-polyurethane elastomers exhibit significant hysteresis to the stress of alternating loads. During the change process, a part of the external force load energy is consumed in the polyurethane elastomer and then converted into heat energy. Therefore, the polyurethane elastomer can absorb and absorb vibration when being subjected to transient impact load, and simultaneously transmit and disperse the transverse force borne by the steel panel. And the polyurethane core material is connected with the upper steel panel and the lower steel panel, so that the core layer and the panels are used as a whole to bear all loads such as shearing force, bending moment and the like transmitted by the panels, the bearing capacity of the sandwich plate is improved, the stress of the sandwich plate is more uniform, and the stress concentration degree is reduced. And for a more optimal solution, the polyurethane core layer may be a honeycomb structure. If the honeycomb structure is adopted, the honeycomb hole unit of the preferably adopted honeycomb structure is formed by diamond holes and circular holes with planes distributed on four nodes of the diamond holes, two adjacent edges of the diamond holes are respectively connected to different positions of the circular holes, external force load energy can be better consumed, and the load capacity of the upper steel plate 1 and the lower steel plate 2 is improved.
In this embodiment, the lateral steel plate 3 is a channel steel; simple structure, intensity is high, the installation of being convenient for simultaneously.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. An antifatigue steel decking which characterized in that: including middle wave form steel sheet, be located middle wave form steel sheet top and below respectively last steel sheet and lower steel sheet, the side direction steel sheet that is located middle wave form steel sheet both sides and the horizontal steel sheet that is located middle wave form board front and back end, go up steel sheet, lower steel sheet, horizontal steel sheet and side direction steel sheet and form the cladding structure to middle wave form steel sheet, middle wave form steel sheet includes wave form board, lower wave form board and is located the connection steel sheet between wave form board and the lower wave form board, the wave form curve of going up wave form board and lower wave form board includes alternative continuous arrangement's horizontal segment and segmental arc, it is fixed in the connection steel sheet with the mode that each other is symmetrical along connection steel sheet to go up wave form board, lower wave form board.
2. The fatigue-resistant steel deck plate according to claim 1, wherein: the bending parts of the upper corrugated plate and the lower corrugated plate are in smooth transition to form an R angle of 60 degrees.
3. The fatigue-resistant steel decking of claim 2 wherein: the horizontal sections of the upper corrugated plate and the lower corrugated plate are fixed on the connecting steel plate.
4. The fatigue-resistant steel deck plate of claim 3, wherein: the upper corrugated plate and the lower corrugated plate are fixed on the connecting steel plate through bolts.
5. The fatigue-resistant steel deck plate of claim 4, wherein: the upper steel plate and the lower steel plate are both composed of steel face plates and a polyurethane core layer positioned between the two steel face plates.
6. The fatigue-resistant steel deck plate of claim 5, wherein: the polyurethane core layer is uniformly and densely filled in a cavity formed by the upper and lower steel face plates and is bonded and fixed with the steel face plates.
7. The fatigue-resistant steel deck plate of claim 6, wherein: the lateral steel plate is channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220732823.3U CN216920016U (en) | 2022-03-31 | 2022-03-31 | Anti-fatigue steel bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220732823.3U CN216920016U (en) | 2022-03-31 | 2022-03-31 | Anti-fatigue steel bridge deck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216920016U true CN216920016U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220732823.3U Active CN216920016U (en) | 2022-03-31 | 2022-03-31 | Anti-fatigue steel bridge deck |
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| Country | Link |
|---|---|
| CN (1) | CN216920016U (en) |
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2022
- 2022-03-31 CN CN202220732823.3U patent/CN216920016U/en active Active
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