Connecting joint for simultaneous existence of concrete column, box-shaped steel beam and H-shaped steel beam

Abstract

The utility model belongs to the technical field of steel structure buildings, and particularly relates to a connecting joint with a concrete column, a box-shaped steel beam and an H-shaped steel beam coexisting, which comprises a rectangular concrete filled steel tubular column, the H-shaped steel beam, a first box-shaped steel beam and a second box-shaped steel beam, and a horizontal upper annular plate, a horizontal middle annular plate and a horizontal lower annular plate are arranged on the outer side wall of the rectangular concrete filled steel tubular column. And the upper flange and the lower flange of the H-shaped steel beam are respectively welded with the horizontal upper ring plate and the horizontal middle ring plate. The annular plates for transmitting horizontal axial force are arranged on the outer side of the rectangular concrete filled steel tubular column, it is avoided that holes are formed in a partition plate in the steel column to pour concrete, the machining and manufacturing difficulty of the box column is reduced, the stiffening bearing plates are arranged between the annular plates, the stability of a system is improved, and the connecting joint is simple in connection, clear in stress path and high in reliability. The processing difficulty is low, and the processing and construction progress can be accelerated.

Description

Technical Field

[0001] This utility model relates to the field of steel structure building technology, and in particular to a connection node where concrete columns and box-type and H-type steel beams coexist. Background Technology

[0002] With the booming development of steel structure construction, concrete-filled steel tube columns have been widely used in various construction projects due to their unique performance advantages. Concrete-filled steel tube columns combine the excellent compressive strength of concrete with the good tensile and bending strength of steel, possessing strong load-bearing capacity. Moreover, compared to pure steel tube structures, concrete-filled steel tube columns exhibit superior durability, with significantly enhanced corrosion resistance and a longer fire resistance period.

[0003] In the connection construction of rectangular steel tube columns and frame beams, a common practice is to add a horizontal inner diaphragm inside the column at the beam-column connection point, and to open grouting holes on the diaphragm to allow for the pouring of concrete inside the steel tube. However, because the grouting holes on the inner diaphragm are relatively small, segregation is easily caused during concrete pouring. In actual construction, segmented pouring and vibration are required, but in areas where steel beams are present on the floor, the problem of incomplete compaction or gaps between the concrete and the steel column wall still frequently occurs. When there are steel beams of unequal height at the beam-column connection point, not only is it necessary to add a horizontal diaphragm inside the rectangular steel tube column, but the welding between the horizontal diaphragm and the steel column usually requires electroslag welding. This process not only significantly increases the difficulty of steel column production and prolongs the processing period, but also adversely affects the overall project construction schedule. Therefore, we propose a connection node where concrete columns coexist with box-type and H-shaped steel beams to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a connection node where concrete columns and box-type and H-shaped steel beams coexist, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a connection node where a concrete column and box-shaped and H-shaped steel beams coexist, including a rectangular steel tube concrete column, an H-shaped steel beam, a box-shaped steel beam I, and a box-shaped steel beam II. The outer wall of the rectangular steel tube concrete column is provided with a horizontal upper ring plate, a horizontal middle ring plate, and a horizontal lower ring plate. The upper and lower flanges of the H-shaped steel beam are respectively welded to the horizontal upper ring plate and the horizontal middle ring plate. The upper and lower flanges of the box-shaped steel beam I and the box-shaped steel beam II are respectively welded to the horizontal upper ring plate and the horizontal lower ring plate.

[0006] A first stiffening support plate is provided between the horizontal upper ring plate and the horizontal lower ring plate, and a second stiffening support plate is provided between the horizontal middle ring plate and the horizontal lower ring plate. A second vertical stiffening plate is provided at the web of the H-beam, and is connected to the second vertical stiffening plate by a second connecting plate with high-strength bolts. Two first vertical stiffening plates are provided at the web of both the first and second box-shaped steel beams, and are connected to the first vertical stiffening plates by a first connecting plate with mounting bolts. The web of the box-shaped steel beam is welded to the first vertical stiffening plate.

[0007] As an improved technical solution, the lengths of the horizontal upper ring plate, horizontal middle ring plate, and horizontal lower ring plate increase sequentially along the direction of the box-shaped steel beam, and the horizontal middle ring plate is fixed to the box-shaped steel beam one and the box-shaped steel beam two by welding.

[0008] As an improved technical solution, the vertical stiffening plate 2 of the H-shaped steel beam and the vertical stiffening plate 1 of the box-shaped steel beam 1 and the box-shaped steel beam 2 are all welded to the column wall of the rectangular steel tube concrete column.

[0009] As an improved technical solution, when the height difference between the H-beam and the box-type steel beam 1 and box-type steel beam 2 exceeds a preset threshold, a stiffening support plate is added between adjacent horizontal ring plates.

[0010] As an improved technical solution, the rectangular steel tube concrete column has no horizontal partitions inside.

[0011] As an improved technical solution, after the vertical stiffening plate of the box-shaped steel beam 1 and the box-shaped steel beam 2 are connected to the first connecting plate by mounting bolts, the web plate and the vertical stiffening plate 1 are subjected to full penetration welding.

[0012] As an improved technical solution, the upper horizontal ring plate and the lower horizontal ring plate are respectively provided with a first stiffening support plate on the side without steel beam connection.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] I. This utility model avoids the need to open holes in the inner partition of the steel column to pour concrete by setting a ring plate on the outside of the rectangular steel tube concrete column to transmit horizontal axial force, thus reducing the difficulty of processing and manufacturing the box column. The stiffening support plate between each ring plate increases the stability of the system. The connection node described in this application is simple to connect, has a clear force path, and is easy to process, which can speed up the processing and construction process.

[0015] 2. By welding the upper, middle, and lower horizontal ring plates to the outer wall of the rectangular steel tube concrete column, the axial force of the steel beam is directly transferred to the column, avoiding the traditional process of opening holes in the inner diaphragm for concrete pouring, thus simplifying the processing. Furthermore, by setting stiffening support plates between the ring plates, the stability of the joint is enhanced and local buckling is prevented. The vertical stiffening plates of the H-beam and box-beam are double-fixed by bolts and welding to ensure a clear force transmission path.

[0016] III. This utility model uses bolts to connect the connecting plate to the web of the steel beam, which facilitates on-site installation. At the same time, welding is used to further strengthen the node rigidity, adapting to the complex working conditions of steel beams with unequal heights. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a front view cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from a bottom view.

[0021] In the diagram: 1. Rectangular steel-concrete composite column; 2. H-beam; 3. Box-type steel beam one; 4. Box-type steel beam two; 5. Upper horizontal ring plate; 6. Middle horizontal ring plate; 7. Lower horizontal ring plate; 8. Second stiffening support plate; 9. First connecting plate; 10. Second connecting plate; 11. First stiffening support plate; 12. Vertical stiffening plate one; 13. Mounting bolts; 14. High-strength bolts; 15. Vertical stiffening plate two. Detailed Implementation

[0022] 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.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0025] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] Figures 1 to 3 As shown, this embodiment provides a connection node where concrete columns and box-shaped and H-shaped steel beams coexist, including a rectangular steel tube concrete column 1, an H-shaped steel beam 2, a box-shaped steel beam 3, and a box-shaped steel beam 4. The outer wall of the rectangular steel tube concrete column 1 is provided with a horizontal upper ring plate 5, a horizontal middle ring plate 6, and a horizontal lower ring plate 7. The upper and lower flanges of the H-shaped steel beam 2 are welded to the horizontal upper ring plate 5 and the horizontal middle ring plate 6, respectively. The upper and lower flanges of the box-shaped steel beam 3 and the box-shaped steel beam 4 are welded to the horizontal upper ring plate 5 and the horizontal lower ring plate 7, respectively.

[0027] A first stiffening support plate 11 is provided between the horizontal upper ring plate 5 and the horizontal lower ring plate 7, and a second stiffening support plate 8 is provided between the horizontal middle ring plate 6 and the horizontal lower ring plate 7. A second vertical stiffening plate 15 is provided at the web of the H-beam 2, and is connected to the second vertical stiffening plate 15 by a second connecting plate 10 with high-strength bolts 14. Two vertical stiffening plates 12 are provided at the web of the box-shaped steel beam 3 and the box-shaped steel beam 4, and are connected to the first vertical stiffening plate 12 by a first connecting plate 9 with mounting bolts 13. The web of the box-shaped steel beam is welded to the vertical stiffening plate 12.

[0028] By welding the upper and lower flanges of H-beam 2, box-beam 1, and box-beam 2 to the outer wall of rectangular steel tube concrete column 1, axial force can be directly transmitted to the column, avoiding the traditional process of opening holes in the inner diaphragm and pouring concrete. Furthermore, by setting H-beam 2, box-beam 1, and box-beam 2 between horizontal ring plates, a rigid frame is formed, which enhances the stability of the joint and prevents local buckling. The connection plates 1 and 2 are fixed with bolts and welded together to form a dual force transmission path, ensuring clear force distribution.

[0029] In other embodiments, the lengths of the upper horizontal ring plate 5, the middle horizontal ring plate 6, and the lower horizontal ring plate 7 increase sequentially along the direction of the box-shaped steel beam, and the middle horizontal ring plate 6 is fixed to the first box-shaped steel beam 3 and the second box-shaped steel beam 4 by welding.

[0030] This design increases the contact area between the ring plate and the steel beam, optimizes the bending moment transmission path, and reduces the stress peak in the welding area.

[0031] In other embodiments, the vertical stiffening plate 15 of the H-beam 2 and the vertical stiffening plates 12 of the box beam 3 and the box beam 4 are all welded to the column wall of the rectangular steel tube concrete column 1.

[0032] In other embodiments, when the height difference between the H-beam 2 and the box-beam 3 and the box-beam 4 exceeds a preset threshold, a stiffening support plate is added between adjacent horizontal ring plates.

[0033] By adjusting the spacing between the ring plates and the number of support plates, the stress requirements of steel beams with different cross-sections can be adapted to avoid stress concentration.

[0034] In other embodiments, the rectangular steel tube concrete column 1 has no horizontal partitions inside;

[0035] This design effectively simplifies the processing of steel pipe columns and avoids the risk of concrete segregation.

[0036] In other embodiments, after the vertical stiffening plate 12 of the box girder 3 and the box girder 4 are connected to the first connecting plate 9 by mounting bolts 13, the web plate and the vertical stiffening plate 12 are fully penetrated welded together.

[0037] This design improves the connection stability between the vertical stiffening plate 12 and the first connecting plate 9, and strengthens the connection between the vertical stiffening plate 12 and the web plate.

[0038] In other embodiments, the upper horizontal ring plate 5 and the lower horizontal ring plate 7 are respectively provided with a first stiffening support plate 11 on the side without steel beam connection;

[0039] This design enhances the local stability of the upper horizontal ring plate 5 and the lower horizontal ring plate 7, improves fatigue resistance during long-term use, and extends the life of the nodes.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting joint of a concrete column and a box and H-shaped steel beam existing simultaneously, comprising a rectangular steel pipe concrete column (1), an H-shaped steel beam (2), a box-shaped steel beam one (3), and a box-shaped steel beam two (4), characterized in that: The rectangular steel pipe concrete column (1) is provided with horizontal upper ring plate (5), horizontal middle ring plate (6) and horizontal lower ring plate (7), the upper and lower flanges of the H-shaped steel beam (2) are welded with the horizontal upper ring plate (5) and the horizontal middle ring plate (6) respectively, and the upper and lower flanges of the box-shaped steel beam one (3) and the box-shaped steel beam two (4) are welded with the horizontal upper ring plate (5) and the horizontal lower ring plate (7) respectively. The first stiffening support plate (11) is arranged between the horizontal upper ring plate (5) and the horizontal lower ring plate (7), the second stiffening support plate (8) is arranged between the horizontal middle ring plate (6) and the horizontal lower ring plate (7), the web plate of the H-shaped steel beam (2) is provided with the vertical stiffening plate two (15), and the vertical stiffening plate two (15) is connected with the second connecting plate (10) by high-strength bolt (14), the web plate of the box-shaped steel beam one (3) and the box-shaped steel beam two (4) is respectively provided with two vertical stiffening plates one (12), and the vertical stiffening plate one (12) is connected with the first connecting plate (9) by mounting bolt (13), and the web plate of the box-shaped steel beam is welded with the vertical stiffening plate one (12).

2. The connection joint of claim 1, wherein: The length of the horizontal upper ring plate (5), the horizontal middle ring plate (6) and the horizontal lower ring plate (7) along the direction of the box-shaped steel beam increases in turn, and the horizontal middle ring plate (6) is fixed between the box-shaped steel beam one (3) and the box-shaped steel beam two (4) by welding.

3. The connection joint of claim 1, wherein: The vertical stiffening plate two (15) of the H-shaped steel beam (2) and the vertical stiffening plate one (12) of the box-shaped steel beam one (3) and the box-shaped steel beam two (4) are welded on the column wall of the rectangular steel pipe concrete column (1).

4. The connection joint of claim 1, wherein: When the cross-section height difference of the H-shaped steel beam (2) and the box-shaped steel beam one (3) and the box-shaped steel beam two (4) exceeds the preset threshold value, the stiffening support plate is additionally arranged between the adjacent horizontal ring plates.

5. The connection joint of claim 1, wherein: The rectangular steel pipe concrete column (1) is internally provided with no horizontal partition plate.

6. The connection joint of claim 1, wherein: After the vertical stiffening plate one (12) of the box-shaped steel beam one (3) and the box-shaped steel beam two (4) is connected with the first connecting plate (9) by mounting bolt (13), the web plate between the vertical stiffening plate one (12) is fully penetrated welded.

7. The connection joint of claim 1, wherein: The first stiffening support plate (11) is arranged on the side of the horizontal upper ring plate (5) and the horizontal lower ring plate (7) without steel beam connection.

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