CN217438711U - Bridge deck pavement system of large-span pedestrian bridge - Google Patents
Bridge deck pavement system of large-span pedestrian bridge Download PDFInfo
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- CN217438711U CN217438711U CN202220033517.0U CN202220033517U CN217438711U CN 217438711 U CN217438711 U CN 217438711U CN 202220033517 U CN202220033517 U CN 202220033517U CN 217438711 U CN217438711 U CN 217438711U
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Abstract
The utility model discloses a bridge deck pavement system of a large-span pedestrian bridge, which comprises a steel structure top plate, an anticorrosive coating, a UHPC layer, a reinforcing mesh and a wear-resistant anti-slip material; the anti-corrosion coating is arranged between the steel structure top plate and the reinforcing mesh; the UHPC layer is laid on the reinforcing mesh; the reinforcing mesh is connected with the steel structure top plate in a local spot welding mode to realize effective connection of the UHPC layer and the steel structure top plate; the wear-resistant anti-slip material is laid on the UHPC layer, a transverse telescopic slot is formed in the surface of the UHPC layer, and a gap of the transverse telescopic slot is filled with caulking paste; the utility model has the advantages of simple structure, convenient construction, light weight, high strength, good durability, good landscape effect and good technical and economic benefits.
Description
Technical Field
The utility model relates to a bridge technical field, especially are a large-span foot bridge deck pavement system.
Background
The pedestrian bridge is an important component of an urban bridge and only allows pedestrians or non-motor vehicles to pass through. The pedestrian bridge pavement is a protective layer paved on a bridge deck to prevent pedestrians and non-motor vehicles from directly wearing the bridge deck, spread load and provide a smooth and anti-skid walking surface for the pedestrians and the non-motor vehicles.
Because the large span of the long-span pedestrian bridge is large, the self weight of the structure of the long-span pedestrian bridge is reduced as much as possible in terms of structural stress, and therefore the load of the long-span pedestrian bridge can be reduced in terms of bridge deck pavement. From the perspective of structural landscape, the high beam height is not suitable for being adopted, so that the main beam is mostly made of steel structures. At present, most of pedestrian bridges adopt steel bridge decks which are paved in two modes, namely flexible pavement and rigid pavement.
The flexible pavement is represented by asphalt pavement, and is roughly classified into hot-mix asphalt concrete or modified dense-graded Asphalt Concrete (AC) pavement, high-temperature mixed cast asphalt concrete (Gussasphalt) pavement, asphalt mastic concrete (SMA) pavement, and Epoxy resin asphalt concrete (Epoxy asphalt) pavement. The total pavement thickness of the type is mostly more than 35mm, the asphalt pavement durability and the thermal stability are poor, the asphalt pavement material needs to be replaced periodically, the bridge deck anticorrosion coating needs to be carried out again, and the cost in the whole life cycle of the structure is high.
Rigid pavements are represented by cement-based materials. The conventional method is a paving system consisting of waterproof concrete, mortar and permeable concrete bricks, and the permeable concrete bricks can be replaced by granite, marble or other types of rigid materials according to the needs. The paving landscape has good effect and good durability, and the biggest defect is that the paving system has larger thickness and larger self weight, which is not beneficial to reducing the self weight of the large-span pedestrian bridge and the design of the bearing capacity and the comfort level of the bridge. Therefore, a novel pedestrian bridge paving system is provided, and the technical problems in the prior art are solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light, the high, the good, the economic benefits of durability of intensity, the effectual large-span people's footbridge bridge deck pavement system of view of quality.
The utility model discloses a following technical scheme realizes:
a bridge deck pavement system of a large-span pedestrian bridge comprises a steel structure top plate, an anticorrosive coating, a UHPC (ultra high performance polycarbonate) layer, a reinforcing mesh and a wear-resistant anti-slip material; the anti-corrosion coating is arranged between the steel structure top plate and the reinforcing mesh; the UHPC layer is laid on the reinforcing mesh; the reinforcing mesh is connected with the steel structure top plate in a local spot welding mode to realize effective connection of the UHPC layer and the steel structure top plate; the wear-resistant anti-slip material is laid on the UHPC layer.
Furthermore, a transverse telescopic slot is formed in the surface of the UHPC layer, and a gap of the transverse telescopic slot is filled with caulking paste.
Further, the reinforcing mesh comprises longitudinal reinforcing steel bars and transverse reinforcing steel bars.
Further, the thickness of the UHPC layer is 25 mm.
Further, the thickness of the wear-resistant and anti-slip material is 5 mm.
Further, the longitudinal distance between the reinforcing meshes is 100 mm; the transverse spacing was 125 mm.
Further, the diameters of the longitudinal steel bars and the transverse steel bars are both 6 mm.
Furthermore, the depth of the transverse telescopic slot is 10-12 mm, and the width of the transverse telescopic slot is 6-10 mm.
The utility model has the advantages that:
the utility model discloses simple structure, construction convenience, effect are showing, have good technical and economic benefits, and specific useful part lies in:
(1) under the condition that the steel beam top plate is subjected to conventional anticorrosive treatment, a paving system consisting of an Ultra-thin UHPC (Ultra-High Performance Concrete) layer and a wear-resistant anti-slip material is adopted, and the steel beam top plate has the characteristics of light weight, High strength, good durability and the like.
(2) The reinforcing mesh is arranged in the ultra-thin UHPC layer, and the reinforcing mesh is connected with the steel structure top plate in a local spot welding mode, so that the effective connection of the UHPC layer and the steel beam is realized, and the problem of void of the ultra-thin rigid pavement layer and the structure is solved.
(3) UHPC is a cement-based composite material with ultrahigh strength, ultrahigh toughness and strong impermeability. By utilizing the ultrahigh strength and the ultrahigh toughness of the composite material, the UHPC layer and the steel bridge deck plate can form a combined structure, so that the rigidity of the bridge deck plate is improved; by utilizing the strong impermeability, the UHPC layer can be used as a waterproof material of a steel bridge deck to prevent the steel bridge deck from being corroded.
(4) The thickness of the wear-resistant and anti-skid material arranged on the UHPC layer can be selected according to the structural requirements. The wear-resistant material has the advantages of environmental protection, energy conservation, compression resistance, wear resistance, good adhesive force, ageing resistance, high construction speed, rich colors and the like, is convenient to replace, and has lower maintenance cost compared with asphalt pavement.
(5) The utility model discloses the people's bridge system construction process of mating formation is mature relatively at present.
Drawings
FIG. 1 is a schematic plan view of a bridge deck pavement system of a large-span pedestrian bridge;
FIG. 2 is a schematic cross-sectional view of a bridge deck pavement system of a large-span pedestrian bridge;
FIG. 3 is a schematic longitudinal section view of a bridge deck pavement system of a large-span pedestrian bridge.
In the drawings: 1-steel structure top plate; 2-anticorrosive coating; 3-UHPC layer; 4-reinforcing mesh; 5-wear-resistant anti-slip material; 6-transverse telescopic slot; 41-longitudinal steel bars; 42-transverse steel bars; 43-spot welding.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, and the present invention will be described in detail with reference to the accompanying drawings and specific embodiments below according to the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, upper end, lower end, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the term "connected" is to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature; in addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 3, a bridge deck pavement system of a large-span pedestrian bridge comprises a steel structure top plate 1, an anti-corrosion coating 2, a UHPC layer 3, a reinforcing mesh 4 and a wear-resistant anti-slip material 5; the anti-corrosion coating 2 is arranged between the steel structure top plate 1 and the reinforcing mesh 4; the UHPC layer 3 is laid on the reinforcing mesh 4; the reinforcing mesh 4 is connected with the steel structure top plate 1 in a local spot welding mode to realize effective connection of the UHPC layer 3 and the steel structure top plate 1; the wear-resistant anti-slip material 5 is laid on the UHPC layer 3. It should be noted that the steel structure top plate 1 is a steel bridge deck top plate of a steel structure main beam of a common pedestrian bridge; the anticorrosive coating 2 is an anticorrosive coating system of the steel structure top plate 1, which meets the requirements of relevant specifications; the UHPC layer 3 is arranged on the steel structure top plate 1 and is a cement-based composite material with ultrahigh strength, ultrahigh toughness and strong impermeability, short steel fibers are doped into the UHPC layer 3 to improve the crack resistance, and the thickness can be as small as 25mm, so that the effect of effectively reducing the self weight of pavement is realized; the reinforcing mesh 4 is connected with the steel structure top plate 1 in a local spot welding 43 mode, so that the UHPC layer 3 is effectively connected with the steel structure top plate 1, and the steel structure top plate 1 is prevented from being empty; the wear-resistant anti-skid material 5 is laid on the UHPC layer 3, is a colored anti-skid pavement and bridge deck pavement functional layer, has the thickness of 5mm generally, and has the advantages of environmental protection, energy conservation, compression resistance, wear resistance, good adhesive force, ageing resistance, high construction speed, rich colors, convenience in replacement, maintenance cost and the like. The UHPC layer 3 and the wear-resistant anti-slip material 5 which are already available on the market and can meet the requirements can be used as the materials adopted by the utility model.
Specifically, in the scheme of this embodiment, the surface of the UHPC layer 3 is provided with a transverse telescopic slot 6, and the inside of the transverse telescopic slot 6 is filled with caulking paste, so as to reduce the influence of deformation such as shrinkage and temperature on the UHPC layer 3.
Specifically, in the scheme of the embodiment, the footbridge paving system is not only suitable for large-span footbridges, but also suitable for conventional span footbridge steel structural bridge deck pavement needing to control the self-weight of the footbridge pavement.
The main process of the construction method of the bridge deck pavement system of the large-span pedestrian bridge can be divided into the steps of pretreatment of a steel structure top plate 1, installation of a reinforcing mesh 4, paving of an UHPC layer 3, moisture preservation and maintenance of the UHPC layer 3, surface roughening of the UHPC layer 3 and paving of a wear-resistant anti-slip material 5. The steel structure top plate 1 is pretreated, and shot blasting, sand blasting and rust removing and anticorrosive coating of the corresponding steel structure top plate 1 area are performed; the installation of the reinforcing mesh 4 is the binding of the reinforcing mesh 4 and the welding connection between the reinforcing mesh and the steel structure top plate 1; the UHPC layer 3 is paved, and the whole process of transportation, storage, stirring and paving of the UHPC material is included; the UHPC layer 3 is subjected to moisturizing maintenance, namely moisturizing maintenance of covering a curing film and watering moisturizing maintenance after removing the curing film are carried out after the UHPC layer 3 is paved; the surface of the UHPC layer 3 is roughened, namely the surface of the UHPC layer 3 is roughened after molding, so that the surface flatness of the UHPC layer meets the laying requirement of the wear-resistant anti-skid material 5; the laying of the wear-resistant and anti-skid material 5 means that the wear-resistant and anti-skid material 5 is finally laid on the roughened UHPC layer 3, and the specific laying process is determined according to the existing laying process of all the wear-resistant and anti-skid materials 5 which can meet the requirements on the market.
Specifically, in the scheme of this embodiment, the UHPC layer 3 can be subjected to moisture retention and maintenance by using high-temperature steam, so that cracks generated by early shrinkage of the UHPC layer 3 are reduced, and the tensile strength of the UHPC layer 3 is improved.
Specifically, in this embodiment, the mesh reinforcement 4 includes longitudinal steel bars 41 and transverse steel bars 42.
Specifically, in the solution of this embodiment, the following design may be adopted but is not limited to the specific use: thickness H1 of UHPC layer 3 was taken to be 25 mm; the thickness H2 of the wear-resistant and anti-skid material 5 is 5 mm; the longitudinal and transverse spacing L and B of the reinforcing mesh 4 are respectively 100mm and 125mm, and the diameter of the reinforcing steel bar is 6 mm; the depth S1 of the transverse telescopic slot 6 is 10-12 mm, and the width S2 is 6-10 mm.
The utility model has the characteristics of the quality is light, intensity is high, the durability is good, economic benefits is high, the view is effectual etc, it is poor to solve traditional pitch durability of mating formation, and the maintenance cost is higher to and the dead weight of mating formation of rigidity is great, to the unfavorable scheduling problem of structural stress.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (8)
1. The utility model provides a large-span foot bridge deck pavement system which characterized in that: comprises a steel structure top plate, an anti-corrosion coating, a UHPC layer, a reinforcing mesh and a wear-resistant anti-slip material; the anti-corrosion coating is arranged between the steel structure top plate and the reinforcing mesh; the UHPC layer is laid on the reinforcing mesh; the reinforcing mesh is connected with the steel structure top plate in a local spot welding mode to realize effective connection of the UHPC layer and the steel structure top plate; the wear-resistant anti-slip material is laid on the UHPC layer.
2. The bridge deck pavement system of the large-span pedestrian bridge according to claim 1, wherein: and a transverse telescopic slot is formed in the surface of the UHPC layer, and a caulking paste is filled in the transverse telescopic slot.
3. The bridge deck pavement system of the large-span pedestrian bridge according to claim 1, characterized in that: the reinforcing mesh comprises longitudinal reinforcing steel bars and transverse reinforcing steel bars.
4. The bridge deck pavement system of the large-span pedestrian bridge according to claim 1, wherein: the thickness of the UHPC layer was 25 mm.
5. The bridge deck pavement system of the large-span pedestrian bridge according to claim 1, wherein: the thickness of the wear-resistant and anti-slip material is 5 mm.
6. The bridge deck pavement system of the large-span pedestrian bridge according to claim 1, wherein: the longitudinal distance between the reinforcing meshes is 100 mm; the transverse spacing was 125 mm.
7. The bridge deck pavement system of the large-span pedestrian bridge according to claim 3, wherein: the diameters of the longitudinal steel bars and the transverse steel bars are both 6 mm.
8. The bridge deck pavement system of the large-span pedestrian bridge according to claim 2, wherein: the depth of the transverse telescopic slot is 10-12 mm, and the width of the transverse telescopic slot is 6-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220033517.0U CN217438711U (en) | 2022-01-07 | 2022-01-07 | Bridge deck pavement system of large-span pedestrian bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220033517.0U CN217438711U (en) | 2022-01-07 | 2022-01-07 | Bridge deck pavement system of large-span pedestrian bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217438711U true CN217438711U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220033517.0U Active CN217438711U (en) | 2022-01-07 | 2022-01-07 | Bridge deck pavement system of large-span pedestrian bridge |
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| Country | Link |
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| CN (1) | CN217438711U (en) |
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- 2022-01-07 CN CN202220033517.0U patent/CN217438711U/en active Active
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