Rapid assembly type steel structure bridge joint

Abstract

The utility model relates to the technical field of steel structure bridge joint connection, in particular to a rapid assembly type steel structure bridge joint which comprises a lower stand column, an upper stand column arranged above the lower stand column and a bridge beam perpendicular to the stand columns. The first connecting part is inserted into the second connecting part, one end of the bridge beam is inserted into the second connecting part, the upper stand column and the lower stand column are quickly connected, and a firm connecting structure can be formed by injecting concrete into the square groove. The first connecting part, the second connecting part and the bridge cross beam are tightly connected together, the structural strength of the connecting joint is improved, the durability of the joint is enhanced, the bridge can bear larger loads and more complex stress states, the supporting rod with the adjustable length is arranged on one side of the lower stand column, and the supporting rod is convenient to use. The supporting rods are used for supporting the bridge beam.

Description

Technical Field

[0001] This utility model relates to the field of steel structure bridge node connection technology, and in particular to rapid assembly steel structure bridge nodes. Background Technology

[0002] Rapidly assembled steel structure bridges refer to bridges where components are fabricated and prefabricated in a factory, then transported to the site for assembly and connection. With the development of rapidly assembled steel structure bridges, the technical requirements for their joints are also increasing. Joints are critical components in bridge structures, connecting various components and transmitting forces and deformations. Therefore, the design and construction of joints are crucial to the overall performance and safety of the bridge.

[0003] Chinese Patent CN214089486U discloses a prefabricated bridge support connection node. This utility model eliminates the need for welding, fully adapts to the requirements of prefabricated steel structure systems, and facilitates installation and disassembly, improving construction efficiency and reducing construction costs. However, in situations where bridge construction sites involve complex assembly, unstable node connections, and insufficient support structures, problems such as low assembly efficiency and reduced structural safety arise. Therefore, this invention provides a rapid prefabricated steel structure bridge node. Utility Model Content

[0004] The main purpose of this utility model is to provide a rapid assembly steel structure bridge node to solve the problems of low assembly efficiency and reduced structural safety caused by complex assembly, unstable node connection and insufficient support structure at the bridge construction site.

[0005] To achieve the above objectives, according to one aspect of the present invention, a rapid-assembly steel structure bridge node is provided, comprising a lower column and an upper column disposed above it, and a bridge crossbeam perpendicular to the columns. A second connecting component is welded to the top of the lower column, and a first connecting component is welded to the bottom of the upper column, with the first connecting component inserted into the second connecting component. One end of the bridge crossbeam is inserted into the second connecting component, and an adjustable-length support rod is provided on one side of the lower column, the support rod serving to support the bridge crossbeam.

[0006] Furthermore, the first connecting component includes a connecting plate welded to the upper column, and a plug is fixedly connected to the bottom of the connecting plate. The plug is U-shaped, and the lower end of the plug is inclined from both sides to the middle. Two screw holes are symmetrically opened on both sides of the plug.

[0007] Furthermore, the second connecting component includes a connecting seat that is welded to the lower column. The connecting seat is U-shaped and has a slot, into which the insert block is inserted.

[0008] Furthermore, the inner side of the connector is provided with several square grooves communicating with the slot, and the connector plate is provided with several injection ports, which are located directly above the square grooves.

[0009] Furthermore, a support plate is welded to one side of the opening end of the connecting seat. The support plate is provided with several elastic protrusions. An inclined plate is provided below the support plate. One end of the inclined plate is welded to the bottom of the support plate, and the other end of the inclined plate is welded to the side wall of the lower column.

[0010] Furthermore, the support rod includes a screw rod, one end of which is threaded to a first connecting rod, and the other end of which is threaded to a second connecting rod, with the threads at both ends of the screw rod having opposite directions.

[0011] Furthermore, a first mounting plate is provided on the side wall of the lower column, and a second mounting plate is provided at the bottom of the bridge beam. Two fixing blocks are symmetrically fixed on the side walls of both the first and second mounting plates, and the two ends of the support rod are respectively rotatably installed between the fixing blocks on the two mounting plates.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this rapid assembly steel structure bridge node, the plug-in design of the first connecting component and the second connecting component enables the rapid connection of the upper and lower columns. By injecting concrete into the square groove, a robust connection structure can be formed, tightly connecting the first connecting component, the second connecting component, and the bridge beam together. This not only improves the structural strength of the connection node but also enhances its durability, enabling the bridge to withstand greater loads and more complex stress states.

[0014] 2. In this rapid assembly steel structure bridge node, support rods are installed. The length is adjustable through the threaded connection between the screw and the connecting rod, which allows the support rods to adapt to bridge beams of different lengths and weights, providing stable support. At the same time, the rotating installation method of the support rods also facilitates position adjustment during the assembly process, improving the flexibility and efficiency of assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the rapid assembly steel bridge node in a preferred embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the first connecting component in a preferred embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the overall structure of the second connecting component in a preferred embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the overall support rod connection structure in a preferred embodiment of the present invention.

[0019] Illustration:

[0020] 1. Lower column; 11. First mounting plate; 111. Fixing block; 2. Upper column; 3. Bridge crossbeam; 31. Second mounting plate;

[0021] 4. Support rod; 41. First connecting rod; 42. Screw; 43. Second connecting rod;

[0022] 5. First connecting component; 51. Connecting plate; 511. Injection port; 52. Insert block; 521. Screw hole;

[0023] 6. Second connecting component; 61. Connecting seat; 611. Slot; 612. Square groove; 62. Support plate; 63. Inclined plate. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figures 1-4 As shown, the purpose of this embodiment is to provide a rapid-assembly steel structure bridge node, including a lower column 1 and an upper column 2 disposed above it, and a bridge beam 3 perpendicular to the columns. The top of the lower column 1 is welded to a second connecting component 6, the bottom of the upper column 2 is welded to a first connecting component 5, and the first connecting component 5 is inserted into the second connecting component 6. One end of the bridge beam 3 is inserted into the second connecting component 6, and an adjustable-length support rod 4 is provided on one side of the lower column 1. The support rod 4 is used to support the bridge beam 3.

[0026] The first connecting component 5 includes a connecting plate 51 welded to the upper column 2. A plug 52 is fixedly connected to the bottom of the connecting plate 51. The plug 52 is U-shaped and its lower end is inclined from both sides to the middle. Two screw holes 521 are symmetrically opened on both sides of the plug 52.

[0027] The second connecting component 6 includes a connecting seat 61 welded to the lower column 1. The connecting seat 61 is U-shaped and has a slot 611. The insert 52 is inserted into the slot 611. The inclined surface design at the lower end of the insert 52 not only facilitates the alignment of the insert 52 when it is inserted into the slot 611, but also guides the insert 52 to smoothly enter the slot 611. Two bolts are symmetrically threaded on the side wall of the connecting seat 61, and one end of the bolts passes through and is threaded into the screw hole 521 for fixing the first connecting component 5 and the second connecting component 6, further fixing the upper column 2 and the lower column 1.

[0028] The inner side of the connecting seat 61 is provided with several square grooves 612 that communicate with the slots 611. The connecting plate 51 is provided with several injection ports 511. The injection ports 511 are located directly above the square grooves 612. One end of the bridge beam 3 is set in the connecting seat 61. According to actual needs, concrete can be injected into the square grooves 612 through the injection ports 511. After the concrete solidifies in the square grooves 612, it will form a solid connection structure, thereby tightly connecting the first connecting component 5, the second connecting component 6 and the bridge beam 3 together, and improving the structural strength of the connection node.

[0029] A support plate 62 is welded to one side of the opening end of the connecting seat 61. The support plate 62 has several elastic protrusions. One end of the bridge beam 3 is inserted into the second connecting component 6 along the surface of the support plate 62. The support plate 62 can effectively distribute and bear the weight of the bridge beam 3, ensuring the stability and safety of the connection. The elastic protrusions on it can increase the friction between the support plate 62 and the bottom surface of the bridge beam 3, thereby preventing the bridge beam 3 from accidentally slipping or moving during installation. An inclined plate 63 is provided below the support plate 62. One end of the inclined plate 63 is welded to the bottom of the support plate 62, and the other end of the inclined plate 63 is welded to the side wall of the lower column 1. This connection method forms a stable triangular support structure, providing additional support force for the support plate 62. The presence of the inclined plate 63 significantly enhances the structural stability of the entire connection node, not only preventing the support plate 62 from deforming or displacing under stress, but also improving the overall connection node's ability to withstand external stress.

[0030] The support rod 4 includes a screw 42, one end of which is threaded to a first connecting rod 41, and the other end of which is threaded to a second connecting rod 43. The threads at both ends of the screw 42 are in opposite directions. Therefore, by rotating the screw 42 clockwise and counterclockwise, the first connecting rod 41 and the second connecting rod 43 are moved closer to each other or further apart, thereby adjusting the overall length of the support rod 4 as needed. This allows the support rod 4 to adapt to bridge beams 3 of different lengths and weights, providing stable support.

[0031] A first mounting plate 11 is provided on the side wall of the lower column 1, and a second mounting plate 31 is fixedly provided at the bottom of the bridge beam 3. Two fixing blocks 111 are symmetrically fixed on the side walls of the first mounting plate 11 and the second mounting plate 31. The two ends of the support rod 4 are respectively rotatably installed between the fixing blocks 111 on the two mounting plates. During the assembly process, the positions of the first mounting plate 11 and the second mounting plate 31 on the lower column 1 and the bridge beam 3 are slidably adjusted according to the length and weight of the bridge beam 3. At the same time, the length of the support rod 4 is adjusted by rotating the screw 42. When it is fixed in a suitable position, two screws are threaded through both sides of the mounting plate. By tightening the screws, one end of the screw is pressed against the side wall of the lower column 1 and the bridge beam 3, thereby fixing the position of the mounting plate and then fixing the position of the support rod 4. The support rod 4 provides stable support for the bridge beam 3, which can effectively prevent the bridge beam 3 from shifting or deforming, and ensure the safety and stability of the bridge.

[0032] In practical use, the second connecting component 6 is welded to the top of the lower column 1, and the first connecting component 5 is welded to the bottom of the upper column 2. Then, the upper column 2 is hoisted, and the insert 52 is aligned with the slot 611 on the second connecting component 6 of the lower column 1 and inserted to the bottom. A bolt is then used to pass through the connecting seat 61 and threaded into the screw hole 521 of the insert 52, initially fixing the upper column 2 and the lower column 1. The bridge beam 3 is then hoisted, and one end of the bridge beam 3 is inserted along the surface of the support plate 62 into the connecting seat 61 of the second connecting component 6. The beam 3 is then slid according to its length and weight. Adjust the position of the first mounting plate 11 on the lower column 1 and the position of the second mounting plate 31 at the bottom of the bridge beam 3. Simultaneously rotate the screw 42 to adjust the length of the support rod 4. When the support rod 4 is adjusted to the appropriate position, use screws to pass through both sides of the mounting plate and thread them onto the side walls of the lower column 1 and the bridge beam 3. Tighten the screws so that one end of the screws presses against the side walls of the lower column 1 and the bridge beam 3 to fix the position of the mounting plate and the support rod. Then, inject concrete into the square groove 612 through the injection port 511 on the connecting plate 51 and wait for the concrete to cure to form a solid connection structure and enhance the structural strength of the joint.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rapid-assembly steel structure bridge node, comprising a lower column (1) and an upper column (2) disposed above it, and further comprising a bridge crossbeam (3) perpendicular to the columns, characterized in that, The lower column (1) is welded to the top of a second connecting component (6), the upper column (2) is welded to the bottom of a first connecting component (5), and the first connecting component (5) is inserted into the second connecting component (6). One end of the bridge beam (3) is inserted into the second connecting component (6), and an adjustable length support rod (4) is provided on one side of the lower column (1). The support rod (4) is used to support the bridge beam (3).

2. The rapid assembly steel structure bridge node according to claim 1, characterized in that, The first connecting component (5) includes a connecting plate (51) welded to the upper column (2). A plug (52) is fixedly connected to the bottom of the connecting plate (51). The plug (52) is U-shaped, and the lower end of the plug (52) is inclined from both sides to the middle. Two screw holes (521) are symmetrically opened on both sides of the plug (52).

3. The rapid assembly steel structure bridge node according to claim 2, characterized in that, The second connecting component (6) includes a connecting seat (61) that is welded to the lower column (1). The connecting seat (61) is U-shaped and has a slot (611) on it. The insert (52) is inserted into the slot (611).

4. The rapid assembly steel structure bridge node according to claim 3, characterized in that, The inner side of the connecting seat (61) is provided with several square grooves (612) that communicate with the slot (611), and the connecting plate (51) is provided with several injection ports (511), which are located directly above the square grooves (612).

5. The rapid assembly steel structure bridge node according to claim 3, characterized in that, A support plate (62) is welded to one side of the opening end of the connecting seat (61). Several elastic protrusions are provided on the support plate (62). An inclined plate (63) is provided below the support plate (62). One end of the inclined plate (63) is welded to the bottom of the support plate (62), and the other end of the inclined plate (63) is welded to the side wall of the lower column (1).

6. The rapid assembly steel structure bridge node according to claim 1, characterized in that, The support rod (4) includes a screw (42), one end of which is threaded to a first connecting rod (41), and the other end of which is threaded to a second connecting rod (43), and the threads at both ends of the screw (42) are in opposite directions.

7. The rapid assembly steel structure bridge node according to claim 6, characterized in that, The lower column (1) is provided with a first mounting plate (11) on its side wall, and the bridge beam (3) is provided with a second mounting plate (31) at its bottom. The side walls of the first mounting plate (11) and the second mounting plate (31) are symmetrically fixed with two fixing blocks (111). The two ends of the support rod (4) are respectively rotatably installed between the fixing blocks (111) on the two mounting plates.

Images