Truss core plate bridge
Through the modularly designed truss core board bridge, the bridge deck panels spliced with multiple core boards and the stressed beams of the truss structure are solved, and the existing truss beam bridges are light and self-heavy, high strength and high assembly efficiency are achieved.
Patent Information
- Application Number
- CN202421652300.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing truss beam bridges have problems such as heavy weight, complex construction and difficult to maintain.
The truss core board bridge adopts a modular design. The bridge deck is spliced horizontally by multiple core boards, and the force-bearing beam is a truss structure. The rapid splicing of the bridge deck and the force-bearing beam is achieved through the Yin-Yang junction structure and bolt connection.
The bridge is achieved with light weight, high structural strength and high assembly efficiency, shortening the construction cycle and reducing construction and transportation costs.
Smart Images
Figure CN222878487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridges, in particular to a truss core plate bridge. Background Art
[0002] The existing truss beam bridge is a bridge design that uses a truss structure as a crossbeam and a longitudinal beam. The crossbeam and the longitudinal beam form a truss structure, on which a bridge deck is laid to provide a traffic function. The use of trusses as supporting beams makes the structure of the entire bridge very stable and strong, and the truss structure can use less material while maintaining strength, thereby reducing construction costs and foundation requirements. The bridge deck of existing large-span bridges is usually made of concrete, and the truss and concrete support parts are overlapped together. However, the existing truss bridges have the following main defects: (1) Traditional truss beam bridges usually require thicker concrete bridge decks to enhance bearing capacity and stability, which makes the overall bridge weight relatively heavy and increases the load on the bridge support structure; (2) The construction of traditional truss beam bridges usually requires on-site welding or prefabrication of the beam body, followed by assembly and installation. This process is relatively complicated and requires a large amount of manpower and mechanical equipment, and the construction period is long and inefficient; (3) Traditional truss beam bridges are not modular structures. Once the bridge body is damaged, it is not easy to replace and maintain. Utility Model Content
[0003] The utility model aims to overcome the above-mentioned deficiencies of the prior art and to provide a truss core plate bridge with light deadweight, high structural strength, high structural stability and high assembly efficiency.
[0004] The technical solution of the utility model is: a truss core plate bridge, comprising at least one bridge unit, wherein the bridge unit comprises a bridge deck and a load-bearing beam; the bridge deck is formed by transversely splicing a plurality of core plates; and the load-bearing beam is a truss structure.
[0005] Furthermore, the plurality of core plates are spliced into a bridge deck along the width direction of the bridge, and adjacent core plates are spliced at joints to form a whole using a yin-yang interlocking structure.
[0006] Furthermore, the bridge deck width of a single bridge unit is ≤12m.
[0007] Furthermore, when the deck width of the entire bridge is greater than 12m, the width of the bridge unit can be made to meet the entire deck width requirement by increasing the number of core plates of a single bridge unit; or at least two bridge units can be connected into one.
[0008] Furthermore, the load-bearing beam of a single bridge unit includes at least one truss monomer, and the truss monomer includes at least two truss longitudinal beams.
[0009] Furthermore, when the spacing between adjacent truss longitudinal beams is not greater than 5 meters, there is no need to arrange cross beams between the truss longitudinal beams; when the spacing between adjacent truss longitudinal beams is greater than 5 meters, the truss unit further includes cross beams arranged between adjacent truss longitudinal beams.
[0010] Furthermore, the truss unit is formed by splicing a plurality of circular tubes or rectangular tubes.
[0011] Furthermore, the truss monomer is welded in a factory, and a bolt connection seat is prefabricated at the connection between the truss monomer and the bridge deck.
[0012] Furthermore, the yin-yang interlocking structure is realized by setting a male and female groove frame on the connecting side of the core board, and the male and female groove frame includes a male frame and a female frame, which are respectively arranged on both sides of the core board. The female frame located on one side of the core board is composed of two inner hooks formed by bending the two ends of the frame inward, and the male frame located on the other side of the core board is composed of two outer hooks extending outward and bent along the outer wall of the frame. Adjacent core boards are fixedly connected by hooking the inner hooks with the outer hooks.
[0013] Furthermore, when adjacent bridge units are combined and connected along the length direction of the entire bridge, the truss longitudinal beams of the adjacent bridge units are connected by bolts or flanges; the bridge decks of the adjacent bridge units are connected into a whole by a yin-yang interlocking structure or bolts.
[0014] Beneficial effects of the utility model:
[0015] (1) The entire bridge is modularly designed, that is, it is designed into multiple bridge units, and the load-bearing beams are modularly designed. After being prefabricated in the factory, adjacent load-bearing beams can be spliced on site, which greatly shortens the construction period and reduces on-site construction time and cost;
[0016] (2) The bridge deck is formed by horizontally splicing multiple core plates. On the one hand, the core plate is light in weight, which greatly reduces the weight of the bridge deck. In addition, the core plate is combined with the truss structure. Both the core plate and the truss structure are made of lightweight materials, which not only reduces the load on the foundation and supporting structure, but also reduces the construction and transportation costs. On the other hand, the combination of the core plate and the truss structure can effectively improve the overall strength and bearing capacity of the bridge. The truss structure can effectively bear the horizontal load and bending force of the bridge, while the core plate can increase the stiffness and stability of the bridge deck, making the entire structure more solid and durable.
[0017] (3) The core boards are connected by a male and female groove frame, 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 is not easy to loosen even under a large load; and there is almost no gap between adjacent core boards after plugging, which greatly improves the sealing performance;
[0018] (4) The truss adopts the combination of truss longitudinal beam and truss cross beam, which has significant bending resistance and is easy to splice with the bridge deck, greatly improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a bridge according to an embodiment of the utility model;
[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of a single bridge unit in an embodiment;
[0021] Figure 3 It is a structural schematic diagram of a core board of an embodiment of the utility model using a male and female groove frame;
[0022] Figure 4 It is a schematic diagram of the connection structure between the bridge deck and the cross beam, and between the cross beam and the truss longitudinal beam in the embodiment of the utility model;
[0023] Figure 5 It is a schematic diagram of the hoisting structure of each module of the bridge in the embodiment of the utility model;
[0024] Figure 6 This is a schematic diagram of the specific structure of a truss monomer of an embodiment of the utility model;
[0025] Figure 7 It is a schematic diagram of the splicing structure between the bridge units along the length direction of the bridge in an embodiment of the utility model;
[0026] Figure 8 yes Figure 7 An enlarged schematic diagram of part I of the illustrated embodiment.
[0027] Description of the accompanying drawings:
[0028] 1. Bridge unit; 2. Bridge deck; 3. Core board; 4. Truss unit; 5. Bridge pier; 6. Guardrail; 31. Male frame; 32. Female frame; 33. Hollow tube; 34. Mounting hole; 41. Truss longitudinal beam; 42. Cross beam; 311. Outer hook; 321. Inner hook; 411. Upper tube body; 412. Lower tube body; 413. Vertical tube; 414. Oblique tube; 415. Vertical connecting plate; 416. Flange plate; 417. Bolt connection seat. DETAILED DESCRIPTION
[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0030] like Figure 1 and Figure 2 As shown: a truss core plate bridge, including at least one bridge unit 1, the bridge unit 1 includes a bridge deck 2 and a load-bearing beam; the bridge deck 2 is formed by transversely splicing a number of core plates 3; the load-bearing beam is a truss structure.
[0031] In this embodiment, it is preferred to splice several bridge units to form a whole bridge. For example, two bridge units are set in the width direction of the bridge, and the width of each bridge unit is ≤12m, while the number of bridge units can be set according to specific needs in the length direction of the bridge. Each bridge unit is preferably equipped with six core plates spliced horizontally, and the width of each core plate is about 2m and the length is about 12 meters. The shape of a bridge unit is designed to be square or approximately square.
[0032] In this embodiment, the two bridge units 1 arranged along the width direction of the bridge can be arranged in parallel or at an angle. In this embodiment, they are preferably arranged at an angle to form a slight slope, preferably 2%, for easy drainage. The two bridge units 1 arranged along the width are respectively fixed to the pier 5 through the truss longitudinal beam 41, and a gap is left between the bridge deck 2 and the pier 5 to form a slight slope, and a gap is left between adjacent bridge units 1 to form an expansion joint.
[0033] like Figure 3 As shown: In this embodiment, for a single bridge unit 1, multiple core plates 3 are spliced into a bridge deck 2 along the width direction of the bridge, and the splicing of adjacent core plates 3 is connected into a whole by a male-female interlocking structure. Specifically, the male-female interlocking structure is achieved by setting male-female groove frames on both sides of the core plate to achieve seamless connection. That is, in the frames set along the length surface on both sides of the core plate 3, one side is a male frame 31 and the other side is a female frame 32. Among them, the female frame 32 located on one side of the core plate is formed by bending the two ends of the frame inward to form two inner hooks 321, and the male frame 31 located on the other side of the core plate is formed by extending outward along the outer wall of the frame and bending out two outer hooks 311. When connecting adjacent core plates 3, first align the male frame 31 of one core plate with one end of the female frame 32 of the other core plate, and then insert the outer hook 311 of the male frame 31 along the inner hook groove formed by the two inner hooks 321 of the female frame, and extend to the other end of the female frame 32 until the other end is reached to complete the plug-in.
[0034] The reason for adopting the splicing method of male and female groove frames is that the load borne by the bridge deck is large. The design of the inner hook and the outer hook of this embodiment makes the connection of the core plate tighter. On the one hand, the mutual hooking of the inner hook and the outer hook forms an internal and external combined structure, 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, there is almost no gap between adjacent core plates, 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 plates, and it is not easy to loosen even under a large load. Moreover, the core plate 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.
[0035] like Figure 4~Figure 8 As shown: In this embodiment, the load-bearing beam of a single bridge unit 1 includes at least one truss monomer 4, and the truss monomer 4 includes at least two truss longitudinal beams 41. When the spacing between adjacent truss longitudinal beams 41 is not greater than 5 meters, there is no need to set cross beams between the truss longitudinal beams 41; when the spacing between adjacent truss longitudinal beams 41 is greater than 5 meters, the truss monomer 4 also includes a plurality of spaced cross beams 42 arranged between the adjacent truss longitudinal beams 41.
[0036] The truss longitudinal beam 41 of this embodiment is formed by splicing a plurality of pipes. Specifically, the truss longitudinal beam 41 includes an upper pipe body 411 and a lower pipe body 412, and a support pipe is provided between the upper and lower pipe bodies, and the support pipe includes a vertical pipe 413 and an inclined pipe 414. When a cross beam 42 is required, a vertical connecting plate 415 for connecting the cross beam 42 is also provided between the upper pipe body 411 and the lower pipe body 412 of the truss longitudinal beam 41, and the vertical pipe 413 and the inclined pipe 414 are provided between adjacent vertical connecting plates 415 on the truss longitudinal beam, for example, one vertical pipe 413 and two inclined pipes 414 are provided between adjacent vertical connecting plates 415, and the inclined pipe 414 is provided between the vertical pipe 413 and the vertical connecting plate 415, that is, one end of the inclined pipe is connected to the intersection of the upper pipe body and the vertical pipe, and the other end of the inclined pipe is connected to the intersection of the lower pipe body and the vertical connecting plate. The cross beam 42 is connected between the vertical connection plates 415 of the adjacent truss longitudinal beams, and the cross beam 42 is also a truss structure, and the connection between the cross beam 42 and the vertical connection plate 415 is threaded connection. For example, flange plates are provided at the ends of the upper and lower tubes of the cross beam, and flanges are fixed between the flange plates and the vertical connection plates. Alternatively, the upper and lower tubes of the cross beam are closed at both ends, nuts are prefabricated on the closed plates, and bolts are passed from the vertical connection plates to the prefabricated nuts of the cross beam for fixing.
[0037] In this embodiment, the truss units 4 are welded in the factory. For example, the upper tube body 411, the lower tube body 412, the support tube and the vertical connecting plate 415 are all welded together in the factory to form a truss longitudinal beam 41, and both ends of the upper tube body 411 and both ends of the lower tube body 412 are prefabricated with flange plates 416. When adjacent truss units 4 are spliced along the length direction of the bridge, it is only necessary to flange-connect the adjacent truss longitudinal beams 41 through the flange plates 416.
[0038] In addition, a plurality of bolt connection seats 417 arranged at intervals are prefabricated at the connection between the truss unit 4 and the bridge deck 2. The bolt connection seat 417 is specifically prefabricated on the upper tube body of the crossbeam 42, and the bolts on the bolt connection seat 417 extend upward along the upper tube body. The core plate 3 includes an upper panel, a lower panel and a plurality of hollow tubes 33 arranged at intervals therebetween. The lower panel is provided with a plurality of mounting holes 34 corresponding to the bolt connection seats 417 at positions corresponding to some of the hollow tubes 33. When the core plate 3 is installed on the crossbeam 42, the bolts extending from the bolt connection seat 417 only need to be inserted into the corresponding mounting holes 34 to fix the core plate. The structure is simple and the assembly efficiency is greatly improved. Specifically, Figure 4 , Figure 7 and Figure 8 shown.
[0039] like Figure 6 As shown: In this embodiment, the cross beam 42 is arranged lower when connected to the vertical connecting plate 415, and a space matching the thickness of the core plate of the bridge deck 2 is reserved above to facilitate the placement of the core plate 3 and the connection between the core plate 3 and the cross beam 42. The upper tube body 411 and the lower tube body 412 of the truss longitudinal beam are extended to facilitate flange splicing between adjacent truss monomers.
[0040] In this embodiment, the upper tube 411 and the lower tube 412 of the truss longitudinal beam are both round tubes, so as to facilitate the connection of the flange plate 416. The upper tube of the cross beam 42 is a rectangular tube, thereby forming a plane, so as to facilitate the flatness of the bridge deck 2; the lower tube of the cross beam 42 can be a round tube or a rectangular tube.
[0041] In this embodiment, a guardrail 6 is also installed on the upper tube body 411 of the truss longitudinal beam to protect traffic safety.
[0042] like Figure 5 As shown: When constructing the truss core plate bridge of this embodiment, the truss longitudinal beams 41 of each bridge unit 1 can be flange-joined along the length direction first, and then the bridge deck panels 2 can be installed in sequence, and each core plate 3 of the bridge deck panel 2 can be connected to the cross beam 42. When multiple bridge units 1 are arranged along the width direction of the bridge, they can act separately without affecting each other.
[0043] In summary, this embodiment has the advantages of simple structure, light bridge weight, high assembly efficiency, short construction period, etc., and can effectively improve the overall strength and bearing capacity of the bridge.
Claims
1. A truss core bridge, comprising at least one bridge unit, wherein the bridge unit comprises a bridge deck and a load-bearing beam; characterized in that: The bridge deck is formed by transversely splicing a number of core plates; the load-bearing beam is a truss structure.
2. The truss core bridge according to claim 1, characterized in that: The plurality of core plates are spliced together along the width direction of the bridge to form a bridge deck, and the splicing positions of adjacent core plates are connected into a whole by adopting a yin-yang interlocking structure.
3. The truss core bridge according to claim 1 or 2, characterized in that: The bridge deck width of a single bridge unit is ≤12m.
4. The truss core bridge according to claim 1 or 2, characterized in that: When the deck width of the entire bridge is greater than 12m, the number of core plates of a single bridge unit can be increased to make the width of the bridge unit meet the width requirement of the entire bridge deck; or at least two bridge units can be connected into one.
5. The truss core bridge according to claim 1 or 2, characterized in that: The load-bearing beam of a single bridge unit includes at least one truss monomer, and the truss monomer includes at least two truss longitudinal beams.
6. The truss core bridge according to claim 5, characterized in that: When the spacing between adjacent truss longitudinal beams is not greater than 5 meters, there is no need to arrange cross beams between the truss longitudinal beams; when the spacing between adjacent truss longitudinal beams is greater than 5 meters, the truss unit further includes cross beams arranged between adjacent truss longitudinal beams.
7. The truss core bridge according to claim 5, characterized in that: The truss monomer is formed by splicing a plurality of circular tubes or rectangular tubes.
8. The truss core bridge according to claim 5, characterized in that: The truss monomer is welded in a factory, and a bolt connection seat is prefabricated at the connection between the truss monomer and the bridge deck.
9. The truss core bridge according to claim 2, characterized in that: The male-female groove frame is realized by setting a male-female groove frame on the connection side of the core board. The male-female groove frame includes a male frame and a female frame, which are respectively set on both sides of the core board. The female frame located on one side of the core board is composed of two inner hooks formed by bending the two ends of the frame inward, and the male frame located on the other side of the core board is composed of two outer hooks extending outward and bent along the outer wall of the frame. Adjacent core boards are fixedly connected by hooking the inner hooks with the outer hooks.
10. The truss core bridge according to claim 5, characterized in that: When adjacent bridge units are combined and connected along the length direction of the entire bridge, the truss longitudinal beams of the adjacent bridge units are connected by bolts or flanges; the bridge decks of the adjacent bridge units are connected into a whole through a yin-yang interlocking structure or bolts.