Frp-aluminum alloy foam filled composite bridge deck panel

Abstract

The application discloses an FRP-aluminum alloy foam filling combined bridge deck plate, which comprises a rectangular FRP component and two rectangular aluminum alloy components respectively installed on the two sides of the rectangular FRP component; the rectangular FRP component is internally filled with a foam core; the rectangular aluminum alloy component comprises an aluminum alloy rectangular tube main body and an auxiliary connecting structure, and the auxiliary connecting structure is used for realizing the connection between the bridge deck plate and the bridge main beam and the connection between the bridge deck plates. The application solves the problems of the traditional steel bridge deck plate, such as too large weight and easy rust, by utilizing the characteristics of FRP and aluminum alloy, such as light weight, high strength and corrosion resistance; the upper plate and the web of the FRP part of the bridge deck plate are provided with support and constraint through foam filling, the problems of the upper plate cracking and the web buckling in the loading area caused by the weak bearing capacity of the FRP material in the non-main fiber direction are solved, and the structural bearing capacity is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of emergency equipment, in particular to a FRP-aluminum alloy foam-filled combined bridge deck. BACKGROUND

[0002] With the development of the times, the construction of national infrastructure is more extensive and intensive, and the social loss caused by a single natural disaster is more serious. The time utilization efficiency of rescue is increasingly improved. In the erection process of emergency bridge, the setting work of bridge deck occupies a large proportion of time. In addition to the large number of bridge decks, an important reason is that the structure is steel, heavy and lacks flexibility. For example, ZB-200 type assembled highway steel bridge, which is our country's traffic preparedness equipment, its single bridge deck weighs 268 kg, and 6-8 people are needed to lift or use engineering machinery to lift it. The transportation burden is heavy, the erection task is heavy, the personnel allocation is inefficient, and the use site is limited. The bridge deck laying link has become an important factor restricting the rapidity of emergency bridge erection, which seriously affects the emergency effectiveness of the bridge. The structure of the bridge deck of the emergency bridge needs to be lightened. In addition, the corrosion problem of the steel bridge deck is obvious in application.

[0003] In the previous lightweight design of bridge deck, aluminum alloy and FRP (fiber reinforced composite material) materials are often used, both of which have the advantages of light weight, high strength and corrosion resistance. Among them, aluminum alloy can realize reliable and convenient connection design, but the all-aluminum alloy bridge deck is expensive, and the weight reduction effect is not as good as FRP material; FRP material has higher specific strength and is more portable, but the mechanical properties in the vertical main fiber direction are poor. When applied to the bridge deck of emergency bridge, the full FRP structure is difficult to realize the convenient and reliable disassembly and assembly connection design, and the connection strength between the bridge decks and the bridge girder is difficult to meet. The connection system has the functions of dispersing load and constraining deformation. The low efficiency of the connection system often leads to an increase in material consumption, which makes the lightweight structure unsatisfactory. In addition, the local bearing capacity of the FRP bridge deck is weak, and the upper deck of the direct pressure area of the wheel is prone to cracking and web buckling in application. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, provide a FRP-aluminum alloy foam-filled combined bridge deck, use high specific strength and corrosion-resistant FRP and aluminum alloy materials to reduce the self-weight of the bridge deck and enhance the environmental adaptability, fill the foam to provide support for the upper deck directly bearing the wheel load under the premise of small weight increase of the bridge deck, and provide lateral restraint for the web to enhance the direct bearing capacity of the upper deck and the buckling resistance of the web. At the same time, the web and the deck of the FRP part provide circumferential restraint for the foam core material, which can enhance the bearing capacity of the foam core material, and the FRP structure and the foam core show a design effect of mutual reinforcement.

[0005] The technical solution for achieving the object of the present application is: an FRP-aluminum alloy foam-filled combined bridge deck, comprising a rectangular FRP component, and two rectangular aluminum alloy components respectively installed on both sides of the rectangular FRP component; the rectangular FRP component is internally filled with a foam core; the rectangular aluminum alloy component comprises an aluminum alloy rectangular tube body and an auxiliary connecting structure for realizing the connection between the bridge deck and the bridge girder, and the connection between the bridge decks.

[0006] Further, the auxiliary connecting structure comprises a bolt connection system for realizing the connection between the bridge deck and the bridge girder, and a tenon connection system for realizing the connection between the bridge decks.

[0007] The bolt connection system comprises a bolt pressure plate arranged inside both ends of the aluminum alloy rectangular tube body, and a bolt assembly penetrating through the upper and lower surfaces of the aluminum alloy rectangular tube body and the bolt pressure plate, and the bridge deck and the bridge girder are connected through the bolt assembly.

[0008] The tenon connection system comprises tenon heads, tenon head plates and tenon hole plates arranged on the outer side of the aluminum alloy rectangular tube body, i.e. the tenon heads, tenon head plates and tenon hole plates arranged on both sides of the bridge deck; the positions of the tenon heads, tenon head plates and tenon hole plates on both sides of the bridge deck are anti-symmetrical; one end of the tenon head is connected with the aluminum alloy rectangular tube body through the tenon head plate, and when the two bridge decks are connected by fitting and installing, the other end of the tenon head of each bridge deck is inserted into the corresponding tenon hole plate of the other bridge deck.

[0009] Further, a stiffening rib plate is arranged on the bolt pressure plate.

[0010] Further, a U-shaped groove penetrating through both ends of the aluminum alloy tube body is arranged on the outer side of the aluminum alloy rectangular tube body, forming an outer wing of the aluminum alloy tube body; the tenon head plate and the tenon hole plate are both cross-connected and installed between the two arms of the U-shaped groove.

[0011] Further, a support rib plate is arranged between the two arms of the U-shaped groove.

[0012] Further, the tenon head plate, the tenon hole plate and the support rib plate are all cut from an aluminum alloy plate.

[0013] Further, the tenon head and the tenon hole plate are fitted and installed with a gap, and the tenon head and the tenon head plate are connected by welding.

[0014] Further, the rectangular FRP component is a multi-cavity profile formed by one-piece pultrusion or vacuum resin infusion, or is formed by adhesion of multiple FRP rectangular tubes through structural glue.

[0015] Further, the rectangular FRP component and the foam core are produced by the following process:

[0016] The foam core is filled into the cavity of the rectangular FRP component through foaming equipment, and the foam core is naturally bonded with the inner wall of the rectangular FRP component after curing;

[0017] Alternatively, a foam strip matching the size of the cavity of the rectangular FRP component is cut from a finished foam plate as the foam core, and the foam strip is inserted into the cavity of the rectangular FRP component, and the foam strip is connected with the inner wall of the rectangular FRP component through structural glue.

[0018] Alternatively, the rectangular FRP component and the foam core are integrated as a whole, and the foam core is wrapped with fiber cloth, and is integrally formed through a vacuum resin infusion process.

[0019] Further, the aluminum alloy rectangular tube body is formed by pultrusion through a prefabricated mold, or is formed by cutting and welding of an aluminum alloy plate.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1) The bridge deck panel can take advantage of multiple materials, avoiding material weaknesses, and fully embodying the design principle of taking advantages and avoiding disadvantages.

[0022] 2) The lightweight design effect of the bridge deck panel is excellent. Taking the ZB-200 assembled highway steel bridge deck panel as an example, after improvement of the combined bridge deck panel design scheme, the weight of the bridge deck panel is reduced to about 140 kg (about 50% lighter than the original steel bridge deck panel), greatly reducing the transportation and erection burden.

[0023] 3) The bridge deck panel has a wide range of applications. The lightweight design enables it to be applied in scenarios where engineering equipment is not available, such as narrow mountainous areas and post-earthquake emergency access, and the good corrosion resistance enables it to be applied to temporary or semi-permanent bridges in marine corrosive environments such as trestles and floating structures.

[0024] 4) The bridge deck panel connection system is designed ingeniously, taking into account the practical performance and bearing capacity, and can meet the rapid assembly and disassembly between the bridge deck panel and the adjacent bridge deck panel, the connection strength is reliable, compared with the current FRP bridge deck panel design at home and abroad, it is more suitable for emergency access scenarios, the connection system realizes bidirectional constraint of the bridge deck panel, the load can be transmitted and dispersed between the bridge deck panels, the stress condition of the single bridge deck panel is improved, the constraint between the bridge deck panel and the bridge girder can further reduce the deformation of the bridge deck panel, and the combined bridge deck panel system has good structural integrity.

[0025] 5) The aluminum alloy part adopts the way of arranging the orifice plate with the flange of the aluminum alloy pipe, which effectively avoids the problem of the local deformation of the upper panel caused by the large width of the aluminum alloy part. The orifice plate not only can realize the connection function, but also provides support for the overhanging flange of the aluminum alloy pipe, saves materials, avoids weight increase, and the direct pressure position of the bolt is located inside the aluminum alloy pipe, which avoids the unevenness of the upper surface of the bridge deck caused by the bolt connection, and is beneficial to driving and paving design.

[0026] 6) The bridge deck is filled with foam to achieve better local reinforcement effect with small weight increase, effectively improve the cracking and web buckling problems of the FRP upper panel in the direct wheel load area, improve the carrying capacity of the bridge deck, and the cavity of the FRP part makes the foam core present a constraint state around, so that the FRP and the foam core present a mutual reinforcement design effect.

[0027] 7) The characteristics of isotropy and strong shape design of aluminum alloy are used to design the end bolt connection system and the side mortise connection system, so as to avoid the problem of insufficient strength of the FRP material in the vertical main fiber direction. The bolt connection system realizes the connection with the main beam of the bridge, and the mortise connection system realizes the connection with the adjacent bridge deck. Through the constraint effect of the connection, load dispersion, reduction of bridge deck deformation and improvement of the integrity of the bridge deck system can be realized, and the structure design can be further optimized to better achieve the lightweight goal.

[0028] 8) The bridge deck structure is simple in design, ingenious in conception, various in manufacturing process, and has good practical basis and application value.

[0029] The application will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the FRP-aluminum alloy foam-filled composite bridge deck in an embodiment.

[0031] Figure 2 It is a schematic diagram of the assembled FRP-aluminum alloy foam-filled composite bridge deck in an embodiment.

[0032] Figure 3 It is a schematic diagram of the assembled composite bridge deck assembly auxiliary device in an embodiment.

[0033] Figure 4 It is a schematic diagram of the working state of the composite bridge deck in an embodiment. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0036] In one embodiment, in combination Figure 1 and Figure 2 , a FRP-aluminum alloy foam-filled composite bridge deck panel is provided, which comprises a rectangular FRP component 1, two rectangular aluminum alloy components 2 respectively mounted on both sides of the rectangular FRP component, the rectangular FRP component 1 is internally provided with a web and filled with a foam core 3; the rectangular aluminum alloy component 2 comprises an aluminum alloy rectangular tube body 4 and an auxiliary connecting structure, the auxiliary connecting structure is used to realize the connection between the bridge deck panel and the bridge girder, and the connection between the bridge deck panels.

[0037] By using the scheme of the embodiment, the bridge deck panel can take advantage of multiple materials, avoid material weaknesses, and fully embody the design principle of taking advantages and avoiding disadvantages.

[0038] Here, the bridge deck panel is filled with foam to achieve better local reinforcement effect with small weight increase, effectively improve the cracking of the FRP upper panel and the web buckling problem in the direct wheel load area, improve the carrying capacity of the bridge deck panel, and the cavity of the FRP part makes the foam core present a constraint state around, so that the FRP and the foam core present a mutual reinforcement design effect.

[0039] Further, in one of the embodiments, the auxiliary connecting structure is a small component and a local hole measure that functionally supplements the aluminum alloy rectangular tube body 4. The auxiliary connecting structure comprises a bolt connection system 14 for realizing the connection between the bridge deck panel and the bridge girder, and a mortise connection system 15 for realizing the connection between the bridge deck panels;

[0040] The bolt connection system 14 comprises a bolt pressure plate 9 arranged inside both ends of the aluminum alloy rectangular tube body, a bolt assembly penetrating the upper and lower surfaces of the aluminum alloy rectangular tube body 4 and the bolt pressure plate 9, and the bridge deck panel and the bridge girder are connected through the bolt assembly.

[0041] Here, the middle bolt pressure plate 9 directly bears the bolt head pressure.

[0042] Here, the bolt assembly penetrates the upper operating hole 11 and the lower operating hole 13 of the upper and lower surfaces of the aluminum alloy rectangular tube body 4, wherein the upper operating hole 11 facilitates the screwing operation of the bolt installation tool, and the lower operating hole 13 facilitates the connection between the bridge deck panel and the bridge girder.

[0043] Preferably, the bolt pressure plate is provided with a stiffening rib plate 10, which strengthens the middle bolt pressure plate 9.

[0044] The tenon connection system 15 comprises tenon heads 5, tenon head plates 6 and tenon hole plates 7 arranged on the outer side of the aluminum alloy rectangular tube body 4, i.e., the tenon heads 5, tenon head plates 6 and tenon hole plates 7 arranged on both sides of the bridge deck plate; the positions of the tenon heads 5, tenon head plates 6 and tenon hole plates 7 on both sides of the bridge deck plate are anti-symmetrical; one end of the tenon head 5 penetrates through the tenon head plate 6 and is connected with the aluminum alloy rectangular tube body 4; when the two bridge deck plates are connected by cooperation and installation, the other end of the tenon head 5 of each bridge deck plate is inserted into the corresponding tenon hole plate 7 of the other bridge deck plate (as shown in the figure). Figure 4

[0045] Preferably, the tenon head and the tenon hole plate are in clearance fit installation, and the tenon head and the tenon head plate are in welding connection, which is convenient for later assembly; in general, the hole diameter of the tenon head plate 6 and the tenon hole plate 7 needs to be slightly larger than the tenon head diameter by 1mm-2mm.

[0046] By using the characteristics of isotropy and strong shape design of the aluminum alloy, the end bolt connection system and the side tenon connection system are designed in the scheme of the embodiment, so as to avoid the problem of insufficient strength of the FRP material in the vertical main fiber direction, the bolt connection system realizes the connection with the bridge girder, the tenon connection system realizes the connection with the adjacent bridge deck plate, through the constraint effect of the connection, the load dispersion, the reduction of the deformation of the bridge deck plate and the improvement of the integrity of the bridge deck plate system can be realized, and then the structure design can be further optimized, and the lightweight target can be better realized.

[0047] The present application is not limited to the structure of the above-mentioned auxiliary connection structure, and other fixed connection modes similar to the principle of the present application also belong to the protection scope of the present application.

[0048] Further, in one of the embodiments, a U-shaped groove penetrating through both ends of the aluminum alloy pipe body is arranged on the outer side of the aluminum alloy rectangular pipe body, forming an outer extending wing of the aluminum alloy pipe body; the tenon head plate 6 and the tenon hole plate 7 are cross-connected and installed between the two arms of the U-shaped groove.

[0049] By using the scheme of the embodiment, the aluminum alloy part adopts the mode of arranging the hole plate on the aluminum alloy pipe with a flange, which effectively avoids the problem of large local deformation of the upper plate caused by the large width of the aluminum alloy part; the tenon head plate and the tenon hole plate not only can realize the connection function, but also can provide support for the outer extending flange of the aluminum alloy pipe, save materials, avoid weight increase, and the direct pressure position of the bolt is located in the inside of the aluminum alloy pipe, avoiding the unevenness of the upper surface of the bridge deck plate caused by the bolt connection, which is beneficial to driving and paving design.

[0050] Further preferably, a support rib plate 8 is further arranged between the two arms of the U-shaped groove, which is used to further provide support for the outer extending flange of the aluminum alloy rectangular pipe body 4.​

[0051] Preferably, the tenon plate 6, the mortise plate 7 and the support rib plate 8 are all cut from an aluminum alloy plate.

[0052] Further, in one embodiment, the rectangular FRP component is a multi-cavity profile integrally formed by pultrusion or vacuum infusion resin molding, or is formed by bonding multiple FRP rectangular tubes with structural glue.

[0053] Further, in one embodiment, the rectangular FRP component and the foam core are produced by the following process:

[0054] The foam core is injected into the cavity of the rectangular FRP component by a foaming device, and after curing, the foam core is naturally bonded to the inner wall of the rectangular FRP component;

[0055] Alternatively, a finished foam plate is cut into a foam strip block matching the size of the cavity of the rectangular FRP component as the foam core, the foam strip block is inserted into the cavity of the rectangular FRP component, and the foam strip block is connected to the inner wall of the rectangular FRP component by structural glue.

[0056] Here, the foam plate is cut into a strip block slightly smaller (with a 0.5-1mm gap reserved) than the size of the cavity of the FRP part.

[0057] Here, if the bridge deck plate is long, the foam core strip block can be divided into two sections, one end face and side face of each section are coated with structural glue, and the two sections are inserted from both ends of the cavity of the FRP part, and the two sections of the foam core are bonded into a whole by the end face structural glue in the middle of the bridge deck plate.

[0058] Alternatively, the rectangular FRP component and the foam core are integrally formed by wrapping the foam core with fiber cloth using the vacuum infusion resin process.

[0059] Further, in one embodiment, the aluminum alloy rectangular tube body is formed by pultrusion through a prefabricated mold, or is formed by cutting and welding an aluminum alloy plate.

[0060] The manufacturing process of the bridge deck plate of the present application is described in detail below.

[0061] 1. Initial design of the bridge deck plate. According to the design span and traffic load of the bridge deck plate, the relevant size parameters of the rectangular FRP component 1 and the rectangular aluminum alloy component 2 are designed, the foam core 3 with appropriate density and hardness is selected according to the local strength requirement of the bridge deck plate, and the structural glue with appropriate elongation is selected according to the design deformation of the bridge deck plate.

[0062] 2. The production of the bridge deck panel assembly. The rectangular FRP part 1 can be a multi-cavity profile integrally pultruded or vacuum infused, or made by gluing FRP rectangular tubes together. The rectangular FRP part 1 and the foam core 3 in the bridge deck panel can be produced by the following three processes: (1) the foam core 3 is directly injected into the cavity of the FRP part by foaming equipment, and after curing, the foam core 3 is naturally bonded to the inner wall of the rectangular FRP part 1; (2) a finished foam board is cut into a strip that is slightly smaller (with a 0.5-1 mm gap reserved) than the cavity size of the FRP part, the side is coated with structural adhesive, and the strip is inserted into the cavity of the FRP part. If the bridge deck panel is long, the foam core strip can be divided into two sections, and the end face and side of each section are coated with structural adhesive and inserted from both ends of the FRP part cavity. The two sections of the foam core are bonded together in the middle of the bridge deck panel through the end face structural adhesive, and the foam core 3 is connected to the inner wall of the rectangular FRP part 1 through the structural adhesive; (3) the rectangular FRP part and the foam core part are made integrally by the vacuum infusion process with the foam core wrapped in fiber cloth. The aluminum alloy rectangular tube body 4 can be made by pultrusion with a mold or by cutting and welding aluminum alloy plates. The aluminum alloy rectangular tube body 4 is then cold-bent and milled to correct the size. When the cutting and welding process is used, a machining allowance of 1-2 mm in thickness is reserved on the web of the aluminum alloy rectangular tube body 4 without flanges to ensure the flatness of the bonding surface after welding. The auxiliary connecting members (5-10) can be assembled with the aluminum alloy rectangular tube body 4 by welding. The tenon 5 can be made by cutting aluminum bars. The end of one side of the tenon 5 is milled into a circular truncated cone shape to facilitate assembly with the mortise plate 7 of the other bridge deck panel. The mortise plate 7, the tenon plate 6, and the support rib plate 8 can be made by cutting aluminum alloy plates. The hole diameters of the tenon plate 6 and the mortise plate 7 are 1-2 mm larger than the tenon diameter to facilitate assembly. The tenon 5 can be welded to the corresponding position of the aluminum alloy rectangular tube body 4, and then the tenon plate 6, the mortise plate 7, and the support rib plate 8 are welded. The bolt pressure plate 9 and the stiffening rib plate 10 are assembled and then welded to the corresponding positions at both ends of the aluminum alloy rectangular tube body 4. Finally, positioning holes are made at both ends of the rectangular aluminum alloy part 2, including the upper operating hole 11, the lower operating hole 13, and the connecting hole 12 on the bolt pressure plate 9. The centers of the three holes are aligned (as shown in Figure 2 ).

[0063] 3. Assembly of the bridge deck panel assembly. This process requires the use of adhesive auxiliary tools and the cooperation of the corresponding adhesive process Figure 3), the adhesion auxiliary tools include pressure bearing steel plate 16, long screw rod 18, short screw rod 20 and matched nut 19, constraint angle steel 17, wood cushion block 21, torque wrench, acrylic beads, plastic film and the like, before assembly, the bonding surface 22 needs to be polished and cleaned to remove the oxidation layer, release agent and stains on the surface of the component, the specific assembly process is as follows: first, the wood cushion block 21 is arranged on a flat ground, a rectangular aluminum alloy part 2 on one side of the bridge deck plate is placed, the flat side thereof faces upward and is coated with structural adhesive, the acrylic beads with a diameter of 0.5 mm are uniformly scattered to control the thickness of the bonding layer, then the rectangular FRP part 1 filled with foam core 3 is stacked on the rectangular aluminum alloy part 2, and the structural adhesive is coated on the upper side thereof, and the acrylic beads with a diameter of 0.5 mm are also scattered, another rectangular aluminum alloy part 2 is stacked, and then the bridge deck plate constraint device is arranged, the purpose is to prevent the bridge deck plate assembly from being dislocated in the subsequent pressing and curing process, the constraint device is composed of multiple groups of constraint angle steels 17, short screw rods 20 and matched nuts 19, the two constraint angle steels 17 of each group are arranged on the upper and lower surfaces of the bridge deck plate and are provided with holes at the ends, and the short screw rod 20 and the nut 19 are matched and tightened to apply pressure and realize the constraint effect. In order to prevent the overflow of the structural adhesive from bonding the constraint angle steel 17 and the bridge deck plate during the curing process, the constraint angle steel 17 needs to be wrapped with plastic film in the early stage, and the lateral pressure is applied to the bridge deck plate after the constraint is completed, the purpose is to compact the adhesive layer and avoid the remaining gaps to affect the bonding quality, the pressing device is composed of pressure bearing steel plate 16, long screw rod 18 and nut 19, the pressure bearing steel plate 16 is arranged on the side of the bridge deck plate, the pressure bearing steel plate 16 is provided with holes on both sides of the upper and lower surfaces of the bridge deck plate and penetrates the long screw rod 18, the nut 19 on the pressure bearing steel plate 16 is tightened by using the torque wrench to apply pressure, the torque is about 5-10 Nm, and it is appropriate that the structural adhesive is no longer extruded in large quantities, at this time, the thickness of the adhesive layer is the diameter of the acrylic beads, the constraint device and the pressing device are uniformly and staggered arranged along the length direction of the bridge deck plate, and the number of arrangements is determined according to the length of the bridge deck plate, the constraint and the pressing are arranged in the sequence of the middle first and then the two sides, after the constraint and the pressing are completed, the overflow structural adhesive is wiped off, and the structural adhesive is cured, the specific curing time is determined according to the type of the structural adhesive, after the curing is completed, the constraint and the pressing devices are removed, the surface adhesive stains are polished and removed, and the bridge deck plate is completed.

[0064] Here, the assembly and manufacturing method is not limited to the above-mentioned method, and any other method for realizing the assembly and manufacturing of the bridge deck plate falls within the protection scope of the present application.

[0065] The FRP-aluminum alloy foam filling combined bridge deck plate provided by the application solves the problems of excessive weight and easy corrosion of traditional steel bridge deck plates by utilizing the light weight, high strength and corrosion resistance of FRP and aluminum alloy; the upper plate and web of the FRP part of the bridge deck plate are supported and constrained by the foam filling, the problems of cracking of the upper plate and buckling of the web in the loading area caused by the weak bearing capacity of the FRP material in the non-main fiber direction are improved, and the structural bearing capacity is improved; the structural design of the bridge deck plate connecting system is realized by using the aluminum alloy material, including the connection between the bridge deck plates and the connection between the bridge deck plates and the bridge main girder, the connecting system supports convenient disassembly and assembly, is reliable in strength, and enables the vehicle load to be transmitted between the bridge deck plates and between the bridge deck plates and the bridge main girder, wherein the connection between the bridge deck plates can effectively disperse the stress of the single bridge deck plate, thereby improving the overall bearing performance of the bridge deck plate system, the connection between the bridge deck plates and the bridge main girder can constrain the end of the bridge deck plate and limit the deformation of the bridge deck plate, so that the driving is smoother. Meanwhile, the reliable and efficient connecting system can reduce the material consumption in the design of the bridge deck plate, and the structure is further lightened.

[0066] The bridge deck plate structure provided by the application is simple in design, ingenious in conception, various in manufacturing process, and has good practical foundation and application value.

[0067] The above shows and describes the basic principles, main features and advantages of the application. It should be understood by those skilled in the art that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An FRP-aluminum alloy foam-filled hybrid deck panel, characterized by, The bridge deck slab comprises a rectangular FRP component and two rectangular aluminum alloy components respectively installed on both sides of the rectangular FRP component; the rectangular FRP component is internally filled with a foam core; the rectangular aluminum alloy component comprises an aluminum alloy rectangular tube body and an auxiliary connecting structure for realizing the connection between the bridge deck slab and the bridge girder and the connection between the bridge deck slabs; The auxiliary connecting structure comprises a bolt connecting system for realizing the connection between the bridge deck slab and the bridge girder and a tenon connecting system for realizing the connection between the bridge deck slabs; The bolt connecting system comprises bolt pressure plates arranged inside both ends of the aluminum alloy rectangular tube body, a bolt assembly penetrating the upper and lower surfaces of the aluminum alloy rectangular tube body and the bolt pressure plates, and the bridge deck slab and the bridge girder are connected through the bolt assembly; The tenon connecting system comprises tenon heads, tenon head plates and tenon hole plates arranged on the outer side of the aluminum alloy rectangular tube body, i.e. the tenon heads, tenon head plates and tenon hole plates arranged on both sides of the bridge deck slab; the arrangement positions of the tenon heads, tenon head plates and tenon hole plates on both sides of the bridge deck slab are inversely symmetrical; one end of the tenon head penetrates the tenon head plate and is connected with the aluminum alloy rectangular tube body, and when the bridge deck slabs are connected by being fitted and installed, the other end of the tenon head of each bridge deck slab is inserted into the corresponding tenon hole plate of the other bridge deck slab; The outer side of the aluminum alloy rectangular tube body is provided with U-shaped grooves penetrating both ends of the aluminum alloy tube body, forming outer extension wings of the aluminum alloy tube body; the tenon head plate and the tenon hole plate are cross-connected and installed between the two arms of the U-shaped groove; The rectangular FRP component is a multi-cavity profile integrally formed by pultrusion or vacuum resin infusion molding, or is formed by gluing a plurality of FRP rectangular tubes through structural glue.

2. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 1, wherein Stiffening ribs are arranged on the bolt pressure plates.

3. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 1, wherein Support ribs are further arranged between the two arms of the U-shaped groove.

4. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 3, wherein The tenon head plate, the tenon hole plate and the support rib are all cut from an aluminum alloy plate.

5. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 1, wherein The tenon head and the tenon hole plate are gap-fitted and installed, and the tenon head and the tenon head plate are welded.

6. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 1, wherein The rectangular FRP component and the foam core are produced by the following process: The foam core is poured into the cavity of the rectangular FRP component through foaming equipment, and after curing, the foam core is naturally bonded with the inner wall of the rectangular FRP component; Or, a foam strip block matching the size of the cavity of the rectangular FRP component is cut from a finished foam plate as the foam core, the foam strip block is inserted into the cavity of the rectangular FRP component, and the foam strip block is connected with the inner wall of the rectangular FRP component through structural glue; Or, the rectangular FRP component and the foam core are integrally made by wrapping the foam core with fiber cloth through the vacuum resin infusion process.

7. The FRP-aluminum alloy foam-filled hybrid bridge deck panel according to claim 1, wherein The aluminum alloy rectangular tube body is formed by pultrusion through a prefabricated mold or is formed by cutting and welding an aluminum alloy plate.

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