A steel plate connection structure for main and secondary beams

Abstract

This utility model relates to the field of construction, specifically a steel plate connection structure for primary and secondary beams. The secondary steel-concrete composite beams are symmetrically arranged on both sides of the primary steel-concrete composite beam, forming a cross-shaped arrangement. The primary steel-concrete composite beam is horizontally fitted with upper and lower flange connecting plates, corresponding to the heights of the upper and lower pipe walls of the secondary steel-concrete composite beams, respectively. The two end faces of the upper and lower flange connecting plates support the upper and lower pipe walls of the secondary steel-concrete composite beams from bottom to top. This utility model significantly improves the construction efficiency of connecting primary and secondary beams and has a simple structure.

Description

Technical Field

[0001] This utility model relates to the field of construction, specifically a steel plate connection structure for primary and secondary beams. Background Technology

[0002] Concrete-steel tubular structures are composite components consisting of an outer steel tube and an inner concrete filling. Through the synergistic action of the steel tube and concrete, the advantages of both materials are fully utilized. They are widely used in construction, bridges, tall structures, and underground engineering. The steel tube typically has a square or rectangular cross-section. The steel provides tensile, bending, and restraining properties, while the concrete filling inside the steel tube primarily bears compressive stress and, under the constraint of the steel tube, enhances compressive strength and ductility.

[0003] In steel-concrete composite structures, the connection design between main beams and secondary beams must balance load transfer reliability, stiffness coordination, and construction convenience. Currently, the conventional connection method for main beams and secondary beams, as described in publication number "CN108343151A," includes secondary beam connection nodes and main beam connection nodes. A connecting plate is vertically welded to the main beam steel frame, and the connecting plate has high-strength bolt holes. The web of the main beam steel frame is bolted to the connecting plate and fixed with high-strength bolts. This connection method requires manual positioning of the main beams and secondary beams before bolting and welding, resulting in a complex structure and low construction efficiency, thus requiring a solution. Utility Model Content

[0004] To avoid and overcome the technical problems existing in the prior art, this utility model provides a steel plate connection structure for primary and secondary beams. This utility model significantly improves the construction efficiency when connecting primary and secondary beams, and has a simple structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A steel plate connection structure for main and secondary beams is disclosed, wherein steel-concrete composite secondary beams are symmetrically arranged on both sides of a steel-concrete composite main beam and are arranged in a cross pattern with the main beam; upper flange connecting plates and lower flange connecting plates, corresponding to the heights of the upper and lower pipe walls of the secondary beams respectively, are horizontally inserted into the main beams; the two end faces of the upper flange connecting plates and lower flange connecting plates support the upper and lower pipe walls of the secondary beams respectively from bottom to top; the width of the upper flange connecting plate is smaller than the width of the lower flange connecting plate, and the lower flanges of each secondary beam are flush.

[0007] As a further embodiment of this utility model: the steel-concrete composite main beam is provided with an upper insertion hole and a lower insertion hole, so that the upper flange connecting plate and the lower flange connecting plate can horizontally penetrate the steel-concrete composite main beam.

[0008] As a further embodiment of this utility model: the main beam of the steel pipe concrete is provided with a grouting hole for pouring concrete, and the upper flange connection plate and the lower flange connection plate are respectively provided with upper flange reserved holes and lower flange reserved holes, the shape and vertical position of the upper flange reserved holes and the lower flange reserved holes correspond to the grouting holes.

[0009] As a further embodiment of this utility model: the upper flange connecting plate, the lower flange connecting plate, the steel-concrete secondary beam, and the steel-concrete main beam are welded and fixed together.

[0010] As a further embodiment of this utility model: the height of the steel-concrete composite secondary beam is less than the height of the steel-concrete composite main beam, and a secondary beam positioning groove is provided on the lower flange of the steel-concrete composite secondary beam; the lower flange connecting plate is inserted into the secondary beam positioning groove and supports the steel-concrete composite secondary beam from bottom to top, and the upper flange connecting plate is inserted into the steel-concrete composite secondary beam and supports and positions the upper pipe wall of the steel-concrete composite secondary beam.

[0011] As a further embodiment of this utility model: the height of the steel-concrete composite secondary beam is equal to the height of the steel-concrete composite main beam, and a secondary beam positioning groove is provided on the lower flange of the steel-concrete composite secondary beam; the lower flange connecting plate is inserted into the steel-concrete composite secondary beam and abuts against the lower pipe wall of the steel-concrete composite secondary beam, and the upper flange connecting plate is inserted into the steel-concrete composite secondary beam and abuts against the upper pipe wall of the steel-concrete composite secondary beam; a pad is inserted in the secondary beam positioning groove so that the lower flange of the steel-concrete composite main beam and the steel-concrete composite secondary beam are flush.

[0012] As a further embodiment of this utility model: the upper flange of the steel-concrete composite secondary beam is provided with a connector positioning groove, the upper flange connecting plate and the lower flange connecting plate are respectively provided with an upper guide hole and a lower guide hole, and the pad plate is provided with a pad positioning groove. The connector positioning groove, the upper guide hole, the lower guide hole and the pad positioning groove are arranged sequentially from top to bottom, and their shapes and vertical positions correspond. The long arm of the connector arranged in an L-shape passes through the connector positioning groove, the upper guide hole, the lower guide hole and the pad positioning groove in sequence, and the short arm of the connector abuts and is positioned against the upper flange of the steel-concrete composite main beam.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model improves construction efficiency during the connection of main and secondary beams by pre-setting upper and lower flange connecting plates on the main steel-concrete composite beam. These plates provide double-end support and positioning for the secondary beams, significantly increasing construction efficiency. The structure is simple, and while serving a positioning function, the upper and lower flange connecting plates further increase the strength of the upper flanges of the main and secondary beams, eliminating the need for additional support. Only small, elongated holes need to be made in the main steel-concrete composite beam for the connecting plates to pass through, ensuring the mechanical properties of the core area of ​​the joint. This further reduces damage to the composite column, ensuring the integrity and reliable load-bearing capacity of the overall weld.

[0015] 2. The corresponding guide holes on the upper and lower flange connecting plates of this utility model, which correspond to the grouting holes on the main beam, facilitate direct concrete pouring after the main and secondary beams are connected. Regardless of whether the heights of the steel-concrete composite main and secondary beams are the same, they can be aligned flush with the concrete secondary beams via the upper flange connecting plate or pad, facilitating subsequent construction.

[0016] 3. This utility model has a simple structure and is easy to construct. The main and secondary beam nodes can be formed by opening holes and passing through steel pipes. During construction, the secondary beams only need to be placed on the steel plate from top to bottom, making construction more convenient and effectively reducing construction costs. After construction, the surface of the steel-concrete composite beam has good flatness. Since the connection structure only has openings at the upper and lower flanges of the main beam and the lower flange of the secondary beam, the number of openings is small, which has little impact on the overall performance. At the same time, it can ensure the flatness of the flanges and webs of the two beams, which is beneficial to the decoration and finishing work after the structural acceptance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the steel-concrete composite main beam in this utility model.

[0019] Figure 3 This is an exploded view of the structure of the first embodiment of this utility model.

[0020] Figure 4 This is an exploded view of the structure of the second embodiment of the present invention.

[0021] Figure 5 This is an exploded view of the structure of the third embodiment of this utility model.

[0022] Figure 6 This is a structural schematic diagram of the present invention viewed from below.

[0023] In the picture:

[0024] 1. Steel-concrete composite main beam; 11. Grouting hole; 12. Upper insertion hole; 13. Lower insertion hole;

[0025] 2. Steel-concrete composite secondary beam; 21. Secondary beam positioning groove; 22. Connector positioning groove;

[0026] 3. Upper flange connecting plate; 31. Upper flange reserved hole; 32. Upper guide hole;

[0027] 4. Lower flange connecting plate; 41. Lower flange reserved hole; 42. Lower guide hole;

[0028] 5. Pad; 51. Pad positioning groove; 6. Connector. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 In this embodiment of the utility model, a steel plate connection structure for main and secondary beams includes a steel-concrete composite main beam 1. The steel-concrete composite main beam 1 has symmetrical upper insertion holes 12 and lower insertion holes 13 on both sides. The upper insertion holes 12 and lower insertion holes 13 correspond to the dimensions of the upper flange connecting plate 3 and the lower flange connecting plate 4. The upper flange connecting plate 3 passes through the two sets of upper insertion holes 12 on the steel-concrete composite main beam 1 and is suspended at both ends. The lower flange connecting plate 4 passes through the two sets of lower insertion holes 13 on the steel-concrete composite main beam 1 and is suspended at both ends.

[0031] A grouting hole 11 is provided in the middle of the upper flange of the steel-concrete composite main beam 1. An upper guide hole 32 and a lower guide hole 42 are provided on the upper flange connecting plate 3 and the lower flange connecting plate 4, respectively. The size of the upper guide hole 32 and the lower guide hole 42 correspond to the size and vertical position of the grouting hole 11.

[0032] Two sets of steel-concrete composite secondary beams 2 are symmetrically arranged on both sides of the steel-concrete composite main beam 1, with their pipe openings corresponding to the positions of the upper guide hole 32 and the lower guide hole 42. Both the steel-concrete composite secondary beams 2 and the steel-concrete composite main beam 1 are square tube structures, arranged in a cross-shaped pattern.

[0033] After the upper flange connecting plate 3 and the lower flange connecting plate 4 are fitted together, they form a double-end face abutment support for the steel-concrete composite secondary beam 2. In various embodiments, the lower flange of the steel-concrete composite secondary beam 2 adjacent to the steel-concrete composite main beam 1 is flattened to form a secondary beam positioning groove 21. Each upper flange connecting plate 3 is inserted into the steel-concrete composite secondary beam 2 and abuts against the upper pipe wall of the steel-concrete composite secondary beam 2, thereby supporting the steel-concrete composite secondary beam 2 in a planar manner. During construction, the steel-concrete composite secondary beam 2 is positioned by inserting it from top to bottom through the upper flange connecting plate 3 and the lower flange connecting plate 4.

[0034] In the first embodiment, the height of the steel-concrete composite secondary beam 2 is less than the height of the steel-concrete composite main beam 1. The width of the lower flange connecting plate 4 is greater than the width of the upper flange connecting plate 3. The lower flange connecting plate 4 is inserted into the secondary beam positioning groove 21, supporting and positioning the steel-concrete composite secondary beam 2 from bottom to top.

[0035] In the second embodiment, the height of the steel-concrete composite secondary beam 2 is equal to the height of the steel-concrete composite main beam 1. The lower flange connecting plate 4 is inserted into the steel-concrete composite secondary beam 2 and positioned by abutting against the lower pipe wall of the steel-concrete composite secondary beam 2. A pad 5 is inserted into the positioning groove 21 of the secondary beam, so that the steel-concrete composite secondary beam 2 is flush with the lower flange of the steel-concrete composite main beam 1 through the pad 5.

[0036] The third embodiment is a further improvement on the second embodiment. In the third embodiment, a connector 6 is introduced to position each component. The connector 6 is an L-shaped plate. The upper flange of the steel-concrete secondary beam 2 has a connector positioning groove 22. The upper flange connecting plate 3 and the lower flange connecting plate 4 have upper guide holes 32 and lower guide holes 42, respectively. The pad plate 5 has a pad positioning groove 51. The connector positioning groove 22, upper guide hole 32, lower guide hole 42 and pad positioning groove 51 are arranged sequentially from top to bottom, and their shapes and vertical positions correspond. The long arm of the connector 6 passes through the connector positioning groove 22, upper guide hole 32, lower guide hole 42 and pad positioning groove 51 in sequence. At this time, the short arm of the connector 6 just abuts against the upper flange of the steel-concrete main beam 1.

[0037] After the steel-concrete composite secondary beam 2 in each embodiment is installed in place, the steel-concrete composite main beam 1, the steel-concrete composite secondary beam 2, the flange connecting plate 3, and the lower flange connecting plate 4 are connected by welding.

[0038] The upper flange of the steel-concrete composite secondary beam 2 is provided with a connector positioning groove 22. The upper flange connecting plate 3 and the lower flange connecting plate 4 are respectively provided with an upper guide hole 32 and a lower guide hole 42. The pad plate 5 is provided with a pad positioning groove 51. The connector positioning groove 22, the upper guide hole 32, the lower guide hole 42 and the pad positioning groove 51 are arranged sequentially from top to bottom, and their shapes and vertical positions correspond. The long arm of the L-shaped connector 6 passes through the connector positioning groove 22, the upper guide hole 32, the lower guide hole 42 and the pad positioning groove 51 in sequence, and the short arm of the connector 6 abuts and is positioned against the upper flange of the steel-concrete composite main beam 1.

[0039] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0040] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A main and secondary beam steel plate type connection structure, characterized by, The steel-concrete composite secondary beams (2) are symmetrically arranged on both sides of the steel-concrete composite main beam (1) and are arranged in a cross shape with the steel-concrete composite main beam (1). The steel-concrete composite main beam (1) is horizontally connected with an upper flange connecting plate (3) and a lower flange connecting plate (4) corresponding to the height of the upper and lower pipe walls of the steel-concrete composite secondary beams (2). The two ends of the upper flange connecting plate (3) and the lower flange connecting plate (4) support the upper and lower pipe walls of the steel-concrete composite secondary beams (2) from bottom to top. The width of the upper flange connecting plate (3) is smaller than the width of the lower flange connecting plate (4), and the lower flanges of each steel-concrete composite secondary beam (2) are flush.

2. The primary and secondary beam steel plate type connection structure according to claim 1, characterized in that, The steel-concrete composite main beam (1) is provided with an upper insertion hole (12) and a lower insertion hole (13) so that the upper flange connecting plate (3) and the lower flange connecting plate (4) can pass horizontally through the steel-concrete composite main beam (1).

3. The primary and secondary beam steel plate type connection structure according to claim 1, characterized in that, The steel-concrete composite main beam (1) is provided with a grouting hole (11) for pouring concrete. The upper flange connecting plate (3) and the lower flange connecting plate (4) are respectively provided with an upper flange reserved hole (31) and a lower flange reserved hole (41). The shape and vertical position of the upper flange reserved hole (31) and the lower flange reserved hole (41) correspond to the grouting hole (11).

4. The primary and secondary beam steel plate type connection structure according to claim 1, characterized in that, The upper flange connecting plate (3), the lower flange connecting plate (4), the steel-concrete secondary beam (2), and the steel-concrete main beam (1) are welded and fixed together.

5. A primary and secondary beam steel plate connection structure according to any one of claims 1 to 4, characterized in that, The height of the steel-concrete composite secondary beam (2) is less than the height of the steel-concrete composite main beam (1). The lower flange of the steel-concrete composite secondary beam (2) is provided with a secondary beam positioning groove (21). The lower flange connecting plate (4) is inserted into the secondary beam positioning groove (21) and supports the steel-concrete composite secondary beam (2) from bottom to top. The upper flange connecting plate (3) is inserted into the steel-concrete composite secondary beam (2) and supports and positions the upper pipe wall of the steel-concrete composite secondary beam (2).

6. A primary and secondary beam steel plate connection structure according to any one of claims 1 to 4, characterized in that, The height of the steel-concrete composite secondary beam (2) is equal to the height of the steel-concrete composite main beam (1). The lower flange of the steel-concrete composite secondary beam (2) is provided with a secondary beam positioning groove (21). The lower flange connecting plate (4) is inserted into the steel-concrete composite secondary beam (2) and abuts against the lower pipe wall of the steel-concrete composite secondary beam (2). The upper flange connecting plate (3) is inserted into the steel-concrete composite secondary beam (2) and abuts against the upper pipe wall of the steel-concrete composite secondary beam (2). A pad (5) is inserted into the secondary beam positioning groove (21) so that the lower flange of the steel-concrete composite main beam (1) and the steel-concrete composite secondary beam (2) are flush.

7. The primary and secondary beam steel plate connection structure according to claim 6, characterized in that, The upper flange of the steel-concrete secondary beam (2) is provided with a connector positioning groove (22). The upper flange connecting plate (3) and the lower flange connecting plate (4) are respectively provided with an upper guide hole (32) and a lower guide hole (42). The pad plate (5) is provided with a pad positioning groove (51). The connector positioning groove (22), the upper guide hole (32), the lower guide hole (42) and the pad positioning groove (51) are arranged from top to bottom in sequence, and their shapes and vertical positions correspond. The long arm of the L-shaped connector (6) passes through the connector positioning groove (22), the upper guide hole (32), the lower guide hole (42) and the pad positioning groove (51) in sequence. Then, the short arm of the connector (6) abuts against the upper flange of the steel-concrete main beam (1) for positioning.

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