A steel-concrete composite joint with steel plates

Abstract

This utility model relates to the field of building technology, specifically a steel-concrete composite joint with steel plates, including a pipe column and a matching pipe beam. Two sets of orthogonal members are arranged sequentially from top to bottom along the axial direction of the pipe column. Each set of orthogonal members includes two connecting plates that orthogonally pass through the pipe column. Both ends or either end of each connecting plate protrude from the outer wall of the pipe column to form a cantilever structure, with the upper connecting plate and its lower connecting plate protruding in the same manner. The upper connecting plate is inserted into the cavity of the pipe beam and is fixedly connected to the upper cavity wall. The lower connecting plate, which matches the upper connecting plate, is supported on the bottom surface of the pipe beam to form an upper-supporting-lower-top structure. Several sets of this upper-supporting-lower-top structure are arranged at equal heights along the circumference of the outer wall of the pipe column. This utility model ensures the compactness of the structure and the enhanced rigidity of the core area of ​​the joint, while also effectively guaranteeing its load-bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically a steel-concrete composite joint with steel plates. Background Technology

[0002] In the field of building engineering, steel-concrete composite structures are widely used in major projects such as high-rise and super high-rise buildings and long-span bridges due to their excellent strength, stiffness, and seismic performance. In this structural system, joints, as key components connecting the steel and concrete materials, play a decisive role in the overall structural load-bearing performance. Currently, numerous research teams and enterprises are investing significant resources in the research and development of joint technologies, and the research work is progressing rapidly.

[0003] Looking at the current industry development trend, welding plays a dominant role in beam-column joint connections of steel-concrete composite structures, which can be summarized into the following two typical methods:

[0004] The first method involves directly welding separate beams to both sides of the steel columns. In actual construction, this method is relatively simple, requiring no complex equipment or processes, effectively shortening the construction period and reducing costs. However, this method inevitably disrupts the continuity of the beam structure. Since the force between the beams and columns is entirely transferred through the welds, the welding quality requirements are extremely high during construction. Even minor welding defects can lead to serious safety hazards when the structure is under load. Furthermore, the welding process is complex, requiring not only professional welders but also precise control of welding parameters, further increasing the construction difficulty. Simultaneously, significant residual stress is generated in the welds and surrounding areas, which may cause weld cracking after long-term load application, reducing the structure's durability. Under extreme loads such as earthquakes, the seismic performance of the structure is largely dependent on the weld quality; once the welds fail, the stability of the entire structure will be severely threatened.

[0005] The second approach is to have the beam pass through the steel column. This method effectively ensures the load-bearing capacity of the beam, allowing it to better fulfill its load-bearing capacity under both vertical and horizontal loads, thus improving the overall stability of the structure. However, because the beam has a large cross-section, passing through the steel column significantly reduces the effective cross-section of the column's web. This not only reduces the load-bearing capacity of the steel column itself but may also affect the stress distribution of the entire structure, making the steel column more susceptible to failure under heavy loads, thereby compromising the structure's safety.

[0006] To effectively address the aforementioned issues, researchers have developed an external wrapping technology through tireless exploration. Taking the patent "CN114541574B" proposing "A prefabricated steel-concrete composite node with a metal damper and its installation method" as an example, this technology can effectively reduce the shear height of the node's core area, improving its overall shear stiffness and shear resistance. Simultaneously, it enables effective control of the plastic hinge at the beam end, the anticipated yield energy dissipation mechanism, and the post-earthquake replaceability and repairability of the metal damper. However, this technology also brings new challenges. Due to the increased structural complexity and number of components, not only are material costs increased, but the installation difficulty during construction is also significantly increased, requiring higher construction precision and stricter quality control. Furthermore, the entire structure appears bulky, occupying more space and hindering efficient space utilization. More importantly, this technology cannot enhance the stiffness of the node's core area; under large loads, the core area is prone to deformation, affecting the structure's stability.

[0007] In conclusion, developing a novel joint structure that achieves the optimal balance between structural compactness, load-bearing capacity, and enhanced stiffness in the core joint area is not only crucial for improving the performance of steel-concrete composite structures but also a pressing challenge for engineers in the field. Solving this problem will bring new technological breakthroughs to the construction engineering field, propelling the construction industry towards a higher level of development. Utility Model Content

[0008] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a steel-concrete composite joint with steel plate connection, which can ensure the compactness of the structure and the strengthening of the stiffness of the core area of ​​the joint, while its load-bearing capacity can also be effectively guaranteed.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A steel-concrete composite joint with steel plate connection includes a pipe column and a pipe beam that cooperates with it. Two sets of orthogonal rod groups are arranged sequentially from top to bottom along the axial direction of the pipe column. Each set of orthogonal rod groups includes two connecting plates that are orthogonally transverse to each other on the pipe column. Both ends or any end of each connecting plate protrudes from the outer wall of the pipe column to form a cantilever structure. The upper connecting plate located above and the lower connecting plate located below it have the same protrusion state.

[0011] The upper connecting plate is inserted into the cavity of the pipe beam and fixed to the upper cavity wall of the cavity. The lower connecting plate, which cooperates with the upper connecting plate, is supported on the bottom surface of the pipe beam to form an upper support and lower top structure. Several sets of the upper support and lower top structure are provided at the same height along the circumference of the outer wall of the pipe column.

[0012] As a further embodiment of this utility model: an adjusting pad for adjusting the horizontal height of the pipe beam is sandwiched between the upper connecting plate and the upper cavity wall of the pipe beam cavity; a support plate is installed on the lower plate surface of the lower connecting plate, and the lower plate surface of the support plate and the lower plate surface of the lower connecting plate adjacent to the support plate are located in the same horizontal plane.

[0013] As a further embodiment of this utility model: the pad is disposed at the cantilever end and / or fixed end of the upper connecting plate; the support plate is disposed at the cantilever end and / or fixed end of the lower connecting plate.

[0014] As a further improvement of this utility model: reinforcing plates are vertically arranged on the upper surface of the lower connecting plate, and clearance holes for inserting the reinforcing plates are provided on the lower cavity wall of the tube beam.

[0015] As a further improvement of this utility model, the surfaces of both the upper connecting plate and the lower connecting plate are arranged horizontally or vertically.

[0016] As a further improvement of this utility model, the two side walls of the tube beam and the tube column are connected to each other by a reinforcing plate.

[0017] As a further improvement of this utility model: a positioning hole is provided on the side wall of the column, and a reinforcing plate passes through the positioning hole and is fixedly connected to the outer side wall of the pipe beam.

[0018] As a further improvement of this utility model, the reinforcing plate includes two plates arranged parallel to each other vertically.

[0019] As a further improvement of this utility model, both the upper and lower connecting plates are provided with pouring holes for slurry injection, and the opening direction of the pouring holes is parallel to the axial direction of the pipe column.

[0020] As a further embodiment of this utility model: the column is a square tube, and a set of upper support and lower support structures are arranged at the same height on its four side walls. The four sets of upper support and lower support structures are connected to each other by two limiting rings sleeved on the outside of the column. Each limiting ring includes two U-shaped clips with the same structure. The middle of the U-shaped clip is provided with a through hole through which the upper connecting plate or the lower connecting plate can pass. Both ends of the U-shaped clip are provided with U-shaped openings. The two U-shaped openings of the two U-shaped clips can be joined together to form a through hole.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. On the tubular column, two sets of orthogonal rod groups are arranged sequentially from top to bottom along the axial direction. Each set of orthogonal rod groups consists of two mutually orthogonal connecting plates that traverse the tubular column, ensuring a tight fit between the components and greatly reducing spatial redundancy. Simultaneously, multiple sets of upper-supporting and lower-supporting structures are installed at equal height along the circumferential direction on the outer wall of the tubular column. The compact arrangement of these structures avoids complex and bulky construction forms, significantly improving space utilization and ensuring the structural compactness of the entire composite node.

[0023] The connecting plates in the orthogonal strut group not only enhance the stability of the tubular column itself, but also form a cantilever structure that works in conjunction with the upper support and lower jacking structure to create a robust mechanical support network. When the structure is subjected to external forces, these structures can apply support forces to the core area of ​​the node from multiple directions, effectively dispersing concentrated stress and significantly strengthening the stiffness of the core area of ​​the node.

[0024] The design of the top-supporting, bottom-supporting structure creates an efficient bridge for force transfer between the tubular beam and the tubular column. When the tubular beam is subjected to vertical or horizontal loads, the top-supporting, bottom-supporting structure can quickly and evenly transfer the force to the tubular column, resulting in a clear and reasonable load-bearing path. The cantilever structure expands the area of ​​force application, avoids stress concentration, and thus effectively ensures the load-bearing performance of the entire composite node, enabling it to stably cope with various complex load conditions.

[0025] Several sets of upper-supporting and lower-top structures are installed at equal height along the circumference of the outer wall of the column, making the entire composite node structure more compact. Compared with traditional node connection methods, this design reduces unnecessary space occupation, improves space utilization, and also makes the structure simpler and more aesthetically pleasing.

[0026] The upper connecting plate and the lower connecting plate protrude in the same way, which ensures the coordination of force transmission and structural fit between the upper and lower connecting plates. This allows the node to work more stably under stress and avoids uneven stress caused by different protrusion states of the connecting plates.

[0027] 2. An adjusting shim is installed between the upper connecting plate and the upper cavity wall of the pipe beam. By adjusting the thickness of the adjusting shim, the horizontal height of the pipe beam can be easily adjusted. In actual construction, due to construction errors or site conditions, the installation height of the pipe beam may deviate. The adjusting shim provides a simple and effective way to solve this problem, improving construction accuracy and efficiency.

[0028] A support plate is installed on the lower surface of the lower connecting plate. The lower surface of the support plate and the lower surface of the lower connecting plate adjacent to the support plate are located on the same horizontal plane, so that the spatial structure formed by the components at each pipe beam is at the same height. This achieves a high-precision leveling effect, lays a solid foundation for the smooth progress of subsequent construction procedures, effectively avoids construction obstacles caused by structural height deviations, and improves overall construction efficiency and project quality.

[0029] 3. The variable position settings of the pads and supports provide a variety of flexible installation options. Whether installed at the cantilever end or the fixed end, they can be adjusted according to actual engineering needs, enhancing the adaptability of the node structure in different scenarios.

[0030] 4. Whether arranged horizontally or vertically, the force transmission path is clearer and more stable. Combined with the optimization of the connecting plate and connection method in the previous claims, it ensures that the entire upper support and lower support structure can play a better role under a stable arrangement.

[0031] 5. The two side walls of the pipe beam and the pipe column are connected by reinforcing plates, which greatly enhances the connection strength and stability between the pipe beam and the pipe column. Building upon the optimization of the upper-supporting and lower-top structure in the core area of ​​the node as described in the preceding claims, the connection between the pipe beam and the pipe column is further reinforced from the side, comprehensively improving the overall rigidity and load-bearing capacity of the node. Positioning holes are provided on the side wall of the pipe column, and the reinforcing plates are inserted and fixed, fitting snugly against the outer side wall of the pipe beam, making the installation of the reinforcing plates more precise and secure. The reinforcing plates are designed as two parallel plates arranged vertically, increasing their strength and bending resistance.

[0032] 6. Casting holes are provided in the upper and lower connecting plates, with the hole direction parallel to the column axis to facilitate grout injection. Based on the previous optimizations and reinforcements to the structural connection, the design of the casting holes allows grout to be filled into the joint, further enhancing the integrity and rigidity of the joint and improving its load-bearing capacity.

[0033] 7. The column is a square tube with upper support and lower support structures arranged on its four side walls, connected by limiting rings. The special design of the limiting rings facilitates installation and positioning. Based on the comprehensive optimization of the node structure, connection method, and reinforcement measures in the preceding claims, the overall structure of the column is further improved, enabling multiple sets of upper support and lower support structures to work together, greatly enhancing the stiffness of the core area of ​​the node and the compactness and stability of the overall structure. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the assembly of the central tube column and two adjacent tube beams in this utility model.

[0035] Figure 2 for Figure 1 A schematic diagram of the split structure.

[0036] Figure 3 for Figure 2 A schematic diagram of the structure when the connecting plate is arranged vertically.

[0037] Figure 4 This is a schematic diagram of the structure of the central column of this utility model, in which four pipe beams are assembled on the outside.

[0038] Figure 5 This is a schematic diagram of the disassembled structure of the column after the reinforcing plate is added in this utility model.

[0039] Figure 6 for Figure 5 A schematic diagram of the structure when the middle reinforcing plate is in the form of a split plate.

[0040] Figure 7 This is a schematic diagram of the disassembled structure of the column and the limiting ring without the use of a reinforcing plate in this utility model.

[0041] Figure 8 This is a schematic diagram of the disassembled structure of the column and the limiting ring using the reinforcing plate in this utility model.

[0042] Figure 9 This is a schematic diagram of the tubular assembly structure that uses both reinforcing plates and limiting rings in this utility model. Figure 1 .

[0043] Figure 10 This is a schematic diagram of the tubular assembly structure that uses both reinforcing plates and limiting rings in this utility model. Figure 2 .

[0044] In the diagram: 10, pipe column; 11, mounting hole; 12, positioning hole; 20, upper connecting plate; 21, pad plate; 30, lower connecting plate; 31, support plate; 32, reinforcing plate; 40, reinforcing plate; 41, dividing plate; 50, pouring hole; 60, pipe beam; 70, limiting ring; 71, U-shaped clip; 711, through hole; 712, U-shaped opening. Detailed Implementation

[0045] 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.

[0046] Please see Figures 1-9The steel-concrete composite joint of this utility model includes vertically arranged pipe columns 10, which are conventional square tubes. At the pre-set nodes of the pipe column 10, two vertically arranged mounting holes 11 are formed on each of its four walls, and a connecting plate is simultaneously inserted into each of the opposing mounting holes 11. There are two ways in which the connecting plate cooperates with the pipe column 10: one is that both ends of the connecting plate symmetrically protrude from the pipe column 10 to form a cantilever structure, so that pipe beams 60 can be installed on both sides of the pipe column 10, such as... Figure 4 As shown; secondly, one end of the connecting plate protrudes from the pipe column 10, and the other end is aligned with the outer wall of the pipe column 10, so as to facilitate the installation of the pipe beam 60 on one side of the pipe column 10, as shown. Figure 2 As shown. After the connecting plate is inserted into the corresponding mounting hole 11, it is fixed to the column 10 by welding.

[0047] During the installation of the connecting plates, the two connecting plates will intersect perpendicularly in the cavity of the tube column 10. To avoid interference, a height difference is used to allow them to pass smoothly through the cavity and be inserted into the corresponding mounting holes 11. The two perpendicular connecting plates form a set of orthogonal rods. At a predetermined node of the tube column 10, two sets of orthogonal rods are arranged sequentially from top to bottom along its axial direction, namely the upper orthogonal rod set and the lower orthogonal rod set. The projections of the upper and lower orthogonal rod sets in the vertical direction coincide with each other, that is, the protrusion state of the connecting plates of the upper and lower orthogonal rod sets on the same side wall is the same.

[0048] The tube beam 60 is usually a square tube. The upper connecting plate 20 is inserted into the cavity of the tube beam 60 and is fixed to the upper cavity wall of the cavity. The lower connecting plate 30, which cooperates with the upper connecting plate 20, is supported on the bottom surface of the tube beam 60 to form an upper support and lower support structure.

[0049] To eliminate the impact of the height difference, one or more pads 21 are added to the upper surface of the lower connecting plate 20 according to the actual situation, so that all pipe beams 60 at the same preset node are at the same height, so as to facilitate subsequent precise construction. At the same time, the position of the pads can be placed at the cantilever end, fixed end or any position of the upper connecting plate 20, depending on the site conditions, and they are fixed to the upper support plate by welding.

[0050] Furthermore, a support plate 31 is attached to the lower surface of the lower connecting plate 30. The lower surface of the support plate 31 is on the same horizontal plane as the lower surface of the lower connecting plate 30 adjacent to the support plate 31, so that the spatial structure formed by the components at each pipe beam 60 is at the same height, thus completing the leveling. At the same time, the position of the support plate 31 can be connected to the cantilever end, fixed end, or any position of the lower connecting plate 30, depending on the site conditions. Secondly, in order to further improve the strength of the upper connecting plate 20 and the lower connecting plate 30, reinforcing plates 32 perpendicular to each other are welded at corresponding positions on their surfaces.

[0051] Both the upper connecting plate 20 and the lower connecting plate 30 have through-holes 50 for slurry injection, and the opening direction of the slurry injection holes 50 is parallel to the axial direction of the tubular column 10. Secondly, as... Figure 3 As shown, when the upper connecting plate 20 and the lower connecting plate 30 are both arranged vertically, they will not block the pouring hole 50 opened on the pipe beam 60, so they do not need to open the corresponding pouring hole 50.

[0052] To further enhance the connection strength between the tube beam 60 and the tube column 10, a reinforcing plate 40 is used to connect the two. For example... Figure 4 and Figure 5 As shown, a positioning hole 12 is provided on the outer side of the column 10. The reinforcing plate 40 is welded and installed in the positioning hole 12 in the same through-hole and protruding state as the current connecting plate, and then fixed to the two side walls of the pipe beam 60 by bolts, nuts, rivets or welding. Figure 6 As shown, depending on the construction process, the reinforcing plate 40 on the same side can be in the form of two separate plates 41.

[0053] like Figures 7-10 As shown, a set of upper support and lower support structures are arranged at equal height on the four side walls of the column 10, and the four sets of upper support and lower support structures are connected to each other by two limiting rings 70 fitted on them. Each limiting ring 70 includes two U-shaped clips 71 with identical structures. The middle of the U-shaped clip 71 has a through hole 711 through which the upper connecting plate 20 or the lower connecting plate 30 can pass, and each end has a U-shaped opening 712. The two U-shaped openings 712 of the two U-shaped clips 71 can be matched to form the through hole 711. In use, after the four connecting plates are welded in place, the four corresponding U-shaped clips 71 are installed in place and welded in sequence to further fix the connecting plates. Then the pipe beam 60 can be installed. Due to the addition of the limiting rings 70, the end of the pipe beam 60 will abut against the limiting rings 70, resulting in a gap between it and the outer wall of the column 10. Therefore, to avoid this problem, a corresponding groove is usually machined at the end of the pipe beam 60 to solve the gap problem and achieve a seamless connection.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steel pipe concrete composite joint connected with a steel plate, characterized by, It includes a pipe column (10) and a pipe beam (60) that cooperates with it. Two sets of orthogonal rod groups are arranged on the pipe column (10) from top to bottom along its axial direction. Both sets of orthogonal rod groups include two connecting plates that are orthogonally transverse to each other on the pipe column (10). Both ends or any end of each connecting plate protrude from the outer wall of the pipe column (10) to form a cantilever structure. The upper connecting plate (20) located above and the lower connecting plate (30) below it have the same protrusion state. The upper connecting plate (20) is inserted into the cavity of the tube beam (60) and fixed to the upper cavity wall of the cavity. The lower connecting plate (30), which cooperates with the upper connecting plate (20), is supported on the bottom surface of the tube beam (60) to form an upper support and lower top structure. Several sets of the upper support and lower top structure are provided at the same height along the circumference on the outer side wall of the tube column (10).

2. A steel tube concrete composite joint connected by steel plates according to claim 1, characterized in that, A height adjustment pad (21) for adjusting the horizontal height of the pipe beam (60) is sandwiched between the upper connecting plate (20) and the upper cavity wall of the pipe beam (60). A support plate (31) is installed on the lower plate surface of the lower connecting plate (30), and the lower plate surface of the support plate (31) and the lower plate surface of the lower connecting plate (30) adjacent to the support plate (31) are located in the same horizontal plane.

3. A steel-concrete composite joint with steel plate connection according to claim 2, characterized in that, The pad (21) is provided at the cantilever end and / or fixed end of the upper connecting plate (20); the support plate (31) is provided at the cantilever end and / or fixed end of the lower connecting plate (30).

4. A steel-concrete composite joint with steel plate connection according to claim 3, characterized in that, A reinforcing plate (32) is vertically arranged on the upper plate surface of the lower connecting plate (30), and a clearance hole for inserting the reinforcing plate (32) is provided on the lower cavity wall of the tube beam (60).

5. A steel-concrete composite joint with steel plate connection according to claim 4, characterized in that, The upper connecting plate (20) and the lower connecting plate (30) are both arranged horizontally or vertically.

6. A steel-concrete composite joint with steel plate connection according to any one of claims 1-5, characterized in that, The two side walls of the tube beam (60) and the tube column (10) are connected to each other by a reinforcing plate (40).

7. A steel-concrete composite joint with steel plate connection according to claim 6, characterized in that, A positioning hole (12) is provided on the side wall of the column (10), and a reinforcing plate (40) passes through the positioning hole (12) and is fixedly connected to the outer side wall of the tube beam (60).

8. A steel-concrete composite joint with steel plate connection according to claim 7, characterized in that, The reinforcing plate (40) includes two parallel plates (41) arranged vertically.

9. A steel-concrete composite joint with steel plate connection according to claim 8, characterized in that, Both the upper connecting plate (20) and the lower connecting plate (30) are provided with pouring holes (50) for slurry injection, and the opening direction of the pouring holes (50) is parallel to the axis of the pipe column (10).

10. A steel-concrete composite joint with steel plate connection according to claim 9, characterized in that, The column (10) is a square tube, and a set of upper support and lower support structures are arranged at the same height on its four side walls. The four sets of upper support and lower support structures are connected to each other by two limiting rings (70) sleeved on the outside of the column (10). Each limiting ring (70) includes two U-shaped clips (71) with the same structure. The middle part of the U-shaped clip (71) is provided with a through hole (711) through which the upper connecting plate (20) or the lower connecting plate (30) can pass. Both ends of the U-shaped clip (71) are provided with U-shaped openings (712). The two U-shaped openings (712) of the two U-shaped clips (71) can be joined together to form a through hole (711).

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