Box type core plate bridge

Abstract

A box type core plate bridge comprises a face plate, a web plate and a bottom plate. The panel is formed by transversely splicing a plurality of core plates; each web plate is formed by longitudinally splicing a plurality of core plates, and the plurality of web plates are arranged at equal intervals; the bottom plate is formed by transversely or longitudinally splicing a plurality of core plates, or the bottom plate is composed of a truss structure. On one hand, the face plate, the web plate and the bottom plate of the bridge are formed by the core plates which are arranged transversely and longitudinally, the dead weight of the bridge can be greatly reduced on the basis of ensuring the strength, and loads on the support and a foundation are reduced; on the basis of reducing the weight, the strength can be greatly improved, the load distribution of each part can be effectively balanced, and the structural stability and safety of the whole bridge are improved, so that a structural system with a simple structure and high strength is formed, and the material waste is reduced.

Description

Technical Field

[0001] The utility model relates to a bridge, in particular to a box-type core board bridge. Background Art

[0002] Box beam is a common bridge structure, and its main feature is a box structure with a rectangular or nearly rectangular cross section. This type of beam usually consists of two horizontal planes, upper and lower, and a vertical wall connecting the two. The structural form of the box beam gives it a high load-bearing capacity and bending resistance, which can effectively bear the load of the bridge and perform well in long-span bridges. However, the existing box beams are basically formed by splicing cast-in-place components, or by splicing prefabricated components and cast-in-place components. They are not 100% prefabricated, resulting in slow installation, time-consuming and labor-intensive, and high installation and labor costs.

[0003] There is also a technology that uses core panels to form bridges through modular installation. For example, core panels are used to make bridge decks and support beams to form a multi-layer bridge body. Since the core panels are light in weight, the weight of the bridge can be reduced. However, there is currently no box-type bridge that is made entirely of core panels. Since the box beam needs to bear loads in multiple directions, its structural design needs to take into account requirements such as strength and stability. And the box beams made of core panels need to consider how to effectively connect and integrate different parts, especially in large-span bridges. These connection points and integrated parts may be the key weaknesses of the structure. Therefore, the utility model urgently needs to design a brand-new box-type core panel bridge to overcome the above difficulties and ensure the stability and safety of the overall structure. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned deficiencies of the prior art and to provide a box-type core board bridge with simple structure, high structural stability and high safety.

[0005] The technical solution of the utility model is: a box-type core plate bridge, comprising a panel, a web and a bottom plate; the panel is formed by horizontally splicing a plurality of core plates; the web is formed by vertically splicing a plurality of core plates, and the plurality of webs are arranged at equal intervals; the bottom plate is formed by horizontally or vertically splicing a plurality of core plates, or the bottom plate is composed of a truss structure.

[0006] Furthermore, the upper end of the web is connected and fixed to the panel along the length direction, and the side surface of the web is connected and fixed to the bottom plate along the length direction.

[0007] Furthermore, when the bottom plate is a core plate, the core plates of the web plate correspond one-to-one with the core plates of the bottom plate and are prefabricated into one piece to form an L-shaped prefabricated body, which is then transported as a whole; or when the bottom plate is a truss, the web plate and the truss are connected by bolts and transported separately.

[0008] Furthermore, if a separate core plate is provided between adjacent L-shaped preforms, one end of the core plate is threadedly connected to the bottom plate of one L-shaped preform, and the other end is threadedly connected to the side wall of another L-shaped preform; if adjacent L-shaped preforms are directly connected, one L-shaped preform is connected relative to or facing another L-shaped preform.

[0009] Furthermore, each of the individual core panels is stacked up and down for overall transportation, and the size thereof complies with container transportation standards.

[0010] Furthermore, threaded connections are adopted between the web and the panel, between the core plates of the bottom plate, and between the core plates of the web; the core plates of the panel are hooked and fixed by male and female groove frames; or when the core plates of the bottom plate are horizontally spliced, the length surfaces of the core plates can also be hooked and fixed by male and female groove frames, and threaded connections are adopted between the width surfaces and the web.

[0011] Furthermore, the core plate bridge is composed of a single bridge unit or a combination of multiple bridge units; the bridge unit includes at least three groups of webs arranged at intervals, at least one row of transversely or longitudinally spliced ​​core plates as a base plate or a truss spliced ​​from multiple pipes as a base plate is arranged between adjacent webs, and the upper end of the web is laid with multiple transversely arranged core plates along the length direction of the web to form a panel.

[0012] Furthermore, the panels of adjacent bridge units are arranged in the same horizontal direction or at an angle.

[0013] Furthermore, end plates are provided between adjacent webs, and the end plates are connected and fixed to the side walls via threaded components.

[0014] Furthermore, the end plate also adopts a core plate structure, and the web plate is connected to the end plate in the width direction.

[0015] Beneficial effects of the utility model:

[0016] (1) On the one hand, the utility model forms the bridge's face plate, web plate and bottom plate by means of core plates arranged horizontally and vertically, which can greatly reduce the bridge's deadweight and reduce the load on the bearings and foundation on the basis of ensuring strength; on the basis of reducing weight, the utility model can greatly improve strength, effectively balance the load distribution of various parts, and improve the structural stability and safety of the entire bridge, thereby forming a structural system with simple structure and high strength, and reducing material waste;

[0017] (2) By seamlessly connecting the core panels of the panel with male and female groove frames and screwing other core panels together through connecting plates, the seamless connection, flatness and connection stability of the panel are ensured; and by strengthening the angle code for screw fixing, the stability and load-bearing capacity of each core panel can be ensured, and flexible adjustment and replacement can be made according to specific needs, which can greatly improve the on-site assembly efficiency;

[0018] (3) By prefabricating the core plates between the web plate and the bottom plate to form an L-shaped prefabricated body, and stacking the individual core plates for transportation; or transporting all the core plates in a form that meets container transportation standards, the transportation efficiency can be greatly improved;

[0019] (4) Designing the base plate into a truss structure can greatly reduce the weight of the bridge, make installation easier, and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a bridge structure composed of two groups of bridge units in Example 1 of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the bridge unit of Example 1 of the utility model;

[0022] Figure 3 yes Figure 2 A top view of the illustrated embodiment 1;

[0023] Figure 4 yes Figure 2 A side view of the illustrated embodiment 1;

[0024] Figure 5 This is a schematic diagram of the male and female groove frame structure of the core board constituting the panel in Example 1 of the utility model;

[0025] Figure 6 yes Figure 4 An enlarged schematic diagram of part I of Example 1 is shown;

[0026] Figure 7 yes Figure 2 An enlarged schematic diagram of the connection assembly of Example 1 is shown;

[0027] Figure 8 yes Figure 7 AA sectional view of the embodiment 1 shown;

[0028] Fig. 9 This is a schematic diagram of the structure of the disc spring provided in Embodiment 1 of the utility model;

[0029] Fig.10 This is a schematic diagram of the laying direction of the core board of the panel and the bottom board of Example 2 of the utility model;

[0030] Fig.11 It is a schematic structural diagram of an L-shaped preform of Example 2 of the utility model;

[0031] Fig.12 This is a schematic diagram of the structure in which the core plates of the bottom plate 4 of Example 2 of the utility model are fixed by bolts through the connecting plates;

[0032] Fig.13 It is a schematic diagram of the laying direction of the panel and the truss in Example 3 of the utility model;

[0033] Fig.14 yes Fig.13 A side view of the illustrated embodiment 3;

[0034] Fig.15 yes Fig.13 An enlarged schematic diagram of Part II of Example 3 is shown;

[0035] Fig.16 It is a schematic diagram of the bridge unit hoisting structure of Example 3 of the utility model;

[0036] Fig.17 It is a schematic diagram of the core plate transportation structure of Example 4 of the utility model;

[0037] Fig.18 It is a structural schematic diagram of the bridge unit with end plates in Example 5 of the utility model.

[0038] Description of the accompanying drawings:

[0039] 1. Bridge unit; 2. Panel; 3. Web; 4. Bottom plate; 5. Core plate; 6. Frame; 7. L-shaped prefabricated body; 8. Reinforced corner code; 9. Truss; 10. End plate; 11. Connection assembly; 21. Vertical pole; 22. Angle piece; 61. Male frame; 62. Female frame; 81. Connection plate; 91. Cross bar; 92. Diagonal bar; 93. Flange interface; 111. L-shaped reinforced corner code; 112. Disc spring; 611. Outer hook; 621. Inner hook. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] like Figure 1~Figure 4 As shown: a box-type core board bridge, composed of a single bridge unit 1 or a combination of multiple bridge units; the bridge unit 1 includes a panel 2, a plurality of webs 3 arranged at equal intervals, and a bottom plate 4, the panel 2 is formed by transversely splicing multiple core boards 5, the webs 3 are formed by longitudinally splicing multiple core boards 5, at least one row of bottom plates 4 is arranged between adjacent webs 3, and the bottom plate 4 is formed by transversely splicing multiple core boards 5.

[0043] In this embodiment, the panel 2 serves as the road panel of the bridge unit, and the web 2 and the bottom plate 3 are combined to form a box-type structure. The core plate 5 is preferably made of stainless steel or aluminum; the sandwich layer of the core plate 5 is preferably a hollow tube array structure composed of a plurality of hollow tubes arranged at intervals, and a frame 6 is provided around the core plate 5 to seal the sandwich layer. In this embodiment, by using the core plate to make a box-type bridge structure, on the one hand, the weight of the structure can be reduced while ensuring a certain strength, thereby reducing the self-weight of the bridge, reducing the load on the support and foundation, and improving the overall economy and feasibility; on the other hand, compared with concrete, it has excellent corrosion resistance and can greatly improve the life of the bridge.

[0044] The bridge unit of this embodiment forms a panel 2 by horizontally splicing multiple core panels 5. On the one hand, the length and width of the road panel can be flexibly adjusted to meet the design requirements of bridges with different spans, and this flexibility is particularly suitable for large-span bridges; on the other hand, the structure is simple, and the factory-prefabricated core panels only need to be simply assembled when transported to the site, which can improve manufacturing efficiency and reduce construction time, while reducing the need for on-site processing and adjustment. Among them, a core panel is usually designed as a cuboid, and horizontal splicing refers to connecting the length surfaces of adjacent core panels, and the length and width of the core panels are designed according to the standard size of the bridge, such as a core panel of 12 meters long and 2 meters wide. The panel width of a single bridge unit is equivalent to the length of a core panel, and the number of core panels laid is selected according to the length requirements of the road panel. In this way, it only needs to be laid horizontally along the length surface of the core panel, saving time and effort.

[0045] like Figure 5 As shown: In the present embodiment, the connection mode of the transverse splicing of adjacent core plates 5 is as follows: the frames arranged along the length direction on both sides of the core plates 5 are male and female groove frames, that is, one side is a male frame 61, and the other side is a female frame 62. When splicing between adjacent core plates 1, it is only necessary to connect the male frame 61 of one core plate with the female frame 62 of another core plate. Specifically, the female frame 62 located on one side of the core plate is formed by two inner hooks 621 formed by bending inwardly at the two ends of the frame, and the male frame 61 located on the other side of the core plate is formed by two outer hooks 611 extending outwardly and bending out along the outer wall of the frame. When connecting adjacent core plates 5, align the male frame 61 of one core plate with one end of the female frame 62 of another core plate, then insert the outer hook 611 of the male frame 61 along the inner hook groove formed by the two inner hooks 621 of the female frame, and extend to the other end of the female frame 62 until the other end is reached and the plug-in is completed.

[0046] The reason why the panel of this embodiment adopts this splicing method is that the load borne by the panel is large and it needs to be open to traffic, etc. The design of the inner hook and the outer hook of this embodiment makes the connection of the core board tighter. On the one hand, the mutual hooking of the inner hook and the outer hook forms a structure combining the inside and the outside, which increases the contact area and stability of the connection. Even if the matching accuracy is slightly deviated, due to the interlocking characteristics of the inner and outer hooks, it can provide a strong fixing force; and after plugging in, there is almost no gap between adjacent core boards, which greatly improves the sealing performance; on the other hand, when the outer hook hooks the inner hook, a relatively difficult-to-detach connection method will be formed. Under the action of external force, the outer hook is not easy to fall off from the inner hook, thereby effectively preventing the movement or separation between the core boards, and it is not easy to loosen even under a large load. Moreover, the core board itself can form a connection structure, and there is no need to set up additional connection components. The structure is simple and the construction time is greatly shortened.

[0047] like Figure 3 As shown: In this embodiment, a plurality of core panels 5 are transversely spliced ​​to form a bottom plate 4, that is, the setting direction of each core panel is the same as the setting direction of the core panel of the panel 2, and the length surfaces of adjacent core panels can be fixed by hooking between the male and female frames of adjacent core panels, just like the panel; and the width surfaces are connected to the webs by threads. Among them, the core panel length of the bottom plate is smaller than the core panel length of the panel. Preferably, the core panel length of the bottom plate is 1 / 3 of the core panel length of the panel. The bottom plate between adjacent webs is transversely spliced ​​with several core panels in sequence along the entire length direction of the bridge. Through transverse splicing, this embodiment can greatly simplify the connection structure, so that the core panels can be hooked along the length surface and bolted along the width surface, the number of bolts used is greatly reduced, and the assembly efficiency is greatly improved.

[0048] In this embodiment, the web 3 is vertically arranged between the face plate 2 and the bottom plate 4, and the core plate of the web 3 is arranged longitudinally, that is, the lengthwise end surface of the core plate 5 is threadedly connected to the bottom surface of the face plate, and the lengthwise side surface of the core plate is threadedly connected to the bottom plate 4. The length of one core plate of the web 3 is the same as the length of one core plate of the face plate 2.

[0049] It can be said that the present embodiment can form a structural system with simple structure and high strength. This design can effectively balance the load distribution in various parts, improve the structural stability and safety of the entire bridge, thereby forming a box-type structure with balanced shape and reducing material waste.

[0050] like Figure 4 and Figure 6As shown: in the aforementioned threaded connection, when the web 3 and the panel 2, the web 3 and the bottom plate 4, and the core plates of the web 3 are threadedly connected, they can be fixed with bolts through the reinforcing angle code 8. For example: when the web 3 is connected with the panel 2, the web 3 and the panel 2 are provided with a reinforcing angle code 8 at a position where the angle is 90°. The main body of the reinforcing angle code 8 is L-shaped, U-shaped or U-shaped, and there are multiple reinforcing angle codes 8, which are arranged at intervals along the length direction of the web 3. One end of the reinforcing angle code 8 is bolted to the bottom surface of the panel 2, and the other end is bolted to the side of the web 3. Similarly, when the web 3 is connected with the bottom plate 4, the reinforcing angle code is also used for fixing. For example, the bottom plate 4 and the web 3 are both provided with reinforcing angle codes 8 at a position where the angle is 90°. The multiple reinforcing angle codes 8 are also arranged at intervals along the length direction of the web and fixed with bolts. For example, four reinforcing angle codes 8 are arranged between a core plate of the bottom plate 4 and the web 3.

[0051] like Figure 7 and Figure 8 As shown: when the adjacent core panels of the web 3 are longitudinally spliced, connection components 11 are provided on both sides of the front and back sides of the adjacent core panels along the joints. The connection components 11 include two L-shaped reinforcing corner codes 111 arranged back to back, and the L-shaped reinforcing corner codes 111 are continuously arranged along the width direction of the core panels. The vertical plates of the two L-shaped reinforcing corner codes 111 are butt-jointed and fixed by bolts, and the horizontal plates of the L-shaped reinforcing corner codes are connected to the corresponding core panels, thereby connecting the two adjacent core panels into one.

[0052] like Fig. 9 As shown: when it is necessary to set an expansion joint between adjacent core plates of the panel, the web plates connected to the bottom of the two core plates are also set separately, that is, the two panel core plates do not share the same web core plate below. In this way, when the web core plates below the two panel core plates are connected, it is necessary to leave a gap when the vertical plates of the aforementioned L-shaped reinforcing angle codes set back to back are connected, and a plurality of disc springs 112 mounted on the bolts are provided at the gap to play a telescopic role.

[0053] In this embodiment, when multiple bridge units 1 are required to be combined, the panels 2 of adjacent bridge units 1 are in the same horizontal direction and are respectively connected to the bridge piers, and gaps can be left between adjacent bridge units as expansion joints. In addition, each bridge unit is prefabricated into a modular structure, so that each bridge unit can be hoisted on site for splicing, saving time and effort.

[0054] Example 2

[0055] like Fig.10 As shown: The difference from Example 1 is that the panel 2 is formed by splicing multiple core panels 5 horizontally, the web 3 is formed by splicing multiple core panels 5 longitudinally, at least one row of bottom panels 4 is arranged between adjacent web panels 3, and the bottom panels 4 are formed by splicing multiple core panels 5 longitudinally.

[0056] In this embodiment, multiple core plates 5 are longitudinally spliced ​​to form the bottom plate 4, and the setting direction of each core plate is 90° different from the setting direction of the core plate of the panel 2. The width surfaces of adjacent core plates are spliced ​​into one piece by threaded connection, and longitudinal splicing is sequentially performed along the entire length of the bridge. In this embodiment, the load can be more evenly distributed to each core plate through longitudinal splicing, reducing the stress concentration on the bottom plate, and the longitudinal splicing can optimize the material utilization rate to a certain extent.

[0057] In this embodiment, the web 3 is vertically arranged between the panel 2 and the bottom plate 4, and the core plate of the web 3 is arranged longitudinally, that is, the end face of the core plate 5 in the longitudinal direction is connected to the bottom surface of the panel, and the side face of the core plate in the longitudinal direction is connected to the bottom plate 4. The spacing between adjacent webs 3 is preferably sufficient to allow 1 to 3 columns of bottom plates 4 to be arranged between the two. For example, if one column is set, it is equivalent to splicing multiple core plates along the width surface to form one column. If two columns of bottom plates are set, it is equivalent to splicing one column of bottom plates with another column of bottom plates along the length surface of the core plates, and setting them side by side. In this embodiment, two columns of bottom plates 4 are preferably arranged side by side between adjacent webs 3.

[0058] It can be said that the horizontal and vertical matching of the panel 2, the web 3 and the bottom plate 4 in this embodiment can form a structural system with simple structure and high strength. This design can effectively balance the load distribution in various parts, improve the structural stability and safety of the entire bridge, thereby forming a balanced box-type structure and reducing material waste.

[0059] like Fig.11 As shown: In this embodiment, each core plate of the web 3 corresponds to each core plate of the bottom plate 4 and is prefabricated into one piece (such as welding or threaded connection) to form an L-shaped preform 7, and is transported as a whole. If two rows of bottom plates are arranged side by side between each adjacent web, the bottom plate forms an L-shaped preform 7 between the core plate close to the web 3 and the core plate of the web 3, and there will be an extra single core plate between the adjacent L-shaped preforms 7, one end of the core plate is threadedly connected to the bottom plate of one L-shaped preform 7, and the other end is threadedly connected to the side wall of another L-shaped preform 7. If only one row of bottom plates is arranged between each adjacent web, each core plate of the bottom plate is directly connected to each core plate of the web to form an L-shaped preform 7, and adjacent L-shaped preforms 7 are threadedly connected. Among them, each of the individual core panels 5 is transported as a whole by stacking up and down, and the size after stacking meets the container transportation standard, that is, the length and width of a single core panel meet the container transportation standard, and the height after stacking also meets the container transportation standard.

[0060] like Fig.12As shown: In the aforementioned threaded connection, when the web 3 and the panel 2, the web 3 and the bottom plate 4, the core plates of the web 3, the core plates of the bottom plate 4, and the multiple rows of bottom plates between adjacent webs are threadedly connected, they can be fixed with bolts through the connecting plate 81. For example: when two rows of bottom plates 4 between adjacent webs are connected, a plurality of connecting plates 81 are welded at intervals along the connecting surface direction at the connecting end of each core plate, and the connecting plate 81 extends up and down along the core plate 5, and threaded holes are provided on the extended part, and a rib plate is provided between the extended part of the connecting plate 8 and the core plate for reinforcement; the adjacent core plates are threadedly fixed by bolts passing through the connecting plate of one core plate and the connecting plate of another core plate. In this embodiment, the connecting plate 81 is welded to the frame 6 of the core plate. It can be understood that in this embodiment, a whole connecting plate can also be welded at the connecting end of each core plate along the connecting surface direction, and threaded holes are provided at intervals on the part extending up and down on the connecting plate to achieve threaded connection of adjacent core plates. For another example: when the web is connected to the panel, since the two are connected at 90°, connecting plates are arranged on the bottom surface of the panel and the end surface of the web, and the connecting plate located on the end surface of the web extends horizontally, and the extended part is threadedly fixed to the bottom connecting plate of the panel.

[0061] It is understandable that the threaded connection method of this embodiment 1 can also use the reinforced angle code of embodiment 1 for bolt connection.

[0062] It can be said that this embodiment ensures the seamless connection, flatness and connection stability of the panel, reduces transportation costs, improves transportation efficiency and on-site assembly efficiency, provides a firm connection through threaded fixation, ensures the stability and load-bearing capacity between the core panels, and can be flexibly adjusted and replaced according to specific needs by seamlessly connecting the core panels of the panel with male and female groove frames, prefabricating the web and the base plate adjacent to it to form an L-shaped prefabricated body, and threading other core panels together through connecting plates.

[0063] Example 3

[0064] like Figures 13-16 As shown: The difference between this embodiment and embodiment 1 is that the bottom plate is composed of a truss structure. The truss 9 can be a tubular truss or a plate truss, or a combination of the two. This embodiment preferably uses a tubular truss, which can reduce the weight of the entire bridge.

[0065] The truss 9 of this embodiment includes a plurality of spaced cross bars 91 and diagonal bars 92 arranged between adjacent webs 3, wherein the cross bars 91 are flange-connected to the side walls of the webs 3, and the diagonal bars 92 are arranged between some cross bars 91 and at least one web 3 and / or between some adjacent cross bars, for example: Fig.15As shown, the diagonal rod connection method between adjacent cross bars is: a flange interface 93 is welded on the cross bar 91, the flange interface 93 is flange-connected with the interface of the diagonal rod 92, and both ends of the diagonal rod 92 are flange-connected with the flange interface 93 of the adjacent cross bar 91. It can be understood that in addition to the flange connection, bolt connection can also be performed through a connecting plate.

[0066] Each bridge unit 1 is prefabricated into a modular structure, so that each bridge unit can be hoisted on site for splicing.

[0067] This embodiment can greatly reduce the weight of the bridge by arranging trusses between the webs, and the installation structure is simpler and the cost is lower.

[0068] Example 4

[0069] like Fig.17 As shown: Based on Example 1, the bridge unit of this embodiment, its panel 2 and web 3 can be stacked and transported according to the international standard container size, and vertical poles 21 are provided at the four corners of the panel 2, and corner pieces 22 are provided on the vertical poles 21, so as to form a container structure, which greatly improves the transportation efficiency. And in each core plate of the bottom plate, every three core plates can be combined into an integral core plate structure with the same size as the panel core plate, and then stacked in multiple layers, and transported according to the international standard container size.

[0070] In addition, the separate core panels described in Example 2 are also transported in this manner.

[0071] Example 5

[0072] like Fig.18 As shown: On the basis of embodiment 1, an end plate 10 may be provided between adjacent webs 3, and the end plate 10 is threadedly fixed to the side wall or the front end face of the web 3. The height of the end plate 10 may be flush with the height of the web 3, or may be less than the height of the web. The end plate 10 preferably adopts a core plate structure, and the web 3 is connected to the end plate 10 in the width direction. By providing the end plate, the inner cavity of the box-type structure can be protected.

[0073] In this embodiment, it is preferred to form a slope on the panel by arranging materials such as asphalt, such as a slope of 2%, to facilitate drainage.

[0074] To sum up, the utility model, on the one hand, can greatly reduce the deadweight of the bridge and reduce the load on the supports and foundation on the basis of ensuring the strength by forming the face plate, web plate and bottom plate of the bridge through the core plates arranged horizontally and vertically; on the basis of reducing the weight, it can also greatly improve the strength, effectively balance the load distribution of various parts, and enhance the structural stability and safety of the entire bridge, thereby forming a structural system with simple structure and high strength, and reducing material waste.

Claims

1. A box-type core bridge, comprising a face plate, a web plate and a bottom plate; characterized in that: The panel is formed by splicing multiple core plates horizontally; the web is formed by splicing multiple core plates vertically, and the multiple webs are arranged at equal intervals; the bottom plate is formed by splicing multiple core plates horizontally or vertically, or the bottom plate is composed of a truss structure.

2. The box core bridge according to claim 1, characterized in that: The upper end of the web is connected and fixed to the panel along the length direction, and the side surface of the web is connected and fixed to the bottom plate along the length direction.

3. The box core bridge according to claim 2, characterized in that: When the bottom plate is a core plate, the core plates of the web plate correspond to each other one by one with the core plates of the bottom plate and are prefabricated into one body to form an L-shaped prefabricated body, which is then transported as a whole; or when the bottom plate is a truss, the web plate and the truss are connected by bolts and transported separately.

4. The box core bridge according to claim 3, characterized in that: If a separate core plate is provided between adjacent L-shaped preforms, one end of the core plate is threadedly connected to the bottom plate of one L-shaped preform, and the other end is threadedly connected to the side wall of another L-shaped preform; if adjacent L-shaped preforms are directly connected, one L-shaped preform is connected relative to or facing another L-shaped preform.

5. The box-type core bridge according to claim 4, characterized in that: Each of the individual core panels is stacked up and down for overall transportation, and the size of the core panels meets the container transportation standards.

6. The box core bridge according to claim 2, characterized in that: The webs and panels, the core panels of the bottom panel, and the core panels of the webs are all connected by threads; the core panels of the panels are hooked and fixed by male and female groove frames; or when the core panels of the bottom panel are horizontally spliced, the length surfaces of the core panels can also be hooked and fixed by male and female groove frames, and the width surfaces and the webs are connected by threads.

7. The box core bridge according to claim 2, characterized in that: The core plate bridge is composed of a single bridge unit or a combination of multiple bridge units; the bridge unit includes at least three groups of webs arranged at intervals, and at least one row of transversely or longitudinally spliced ​​core plates as a base plate or a truss spliced ​​from multiple pipes is arranged between adjacent webs as a base plate, and the upper end of the web is laid with multiple transversely arranged core plates along the length direction of the web to form a panel.

8. The box core bridge according to claim 7, characterized in that: The panels of adjacent bridge units are arranged in the same horizontal direction or at an angle.

9. The box core bridge according to claim 2, characterized in that: End plates are also arranged between adjacent web plates, and the end plates are connected and fixed to the web plates by means of threaded components.

10. The box core bridge according to claim 9, characterized in that: The end plate also adopts a core plate structure, and the web plate is connected to the end plate in the width direction.

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