Adjustable spliced ​​steel structure beam column for assembled building

Abstract

The present invention relates to the technical field of building structure connection, and discloses an adjustable spliced ​​steel structure beam column for prefabricated buildings, including a connecting piece, which is used to lock and position the steel column body and the steel beam body, and the connecting piece includes a positioning plate, the inner wall of the positioning plate is provided with an oblong hole, the inside of the oblong hole is provided with an external fixing block that can slide smoothly in its cavity, and the middle of the external fixing block is penetrated by a bolt 1 that is threadedly connected to it. The invention is provided with an oblong hole. Since errors are inevitable in the processing of the steel column body and the steel beam body, the hole for connection is provided as an oblong hole on the side of the positioning plate, which provides a larger space for bolt 1 to move. The oblong hole can allow bolt 1 to move within a certain range in the hole, so that the relative position of the steel column body and the steel beam body can be adjusted more flexibly during installation, solving the problem of difficult alignment of bolt holes due to processing errors and reducing the difficulty of installation.

Description

Technical Field

[0001] The present invention relates to the technical field of building structure connection, and in particular to an adjustable spliced ​​steel structure beam column for assembled buildings. Background Art

[0002] In the field of prefabricated buildings, spliced ​​beams and columns play an extremely critical role. From a functional perspective, as the core load-bearing component of the building structure, they bear and effectively transmit vertical and horizontal loads, ensuring that the building structure remains stable under various working conditions. Just like the human body's skeletal structure supports the entire building space, it is a key node for prefabricated buildings to achieve large-scale, standardized production and construction. In terms of ensuring the quality and reliability of buildings, the model of factory prefabrication and on-site precise splicing greatly reduces the quality defects caused by on-site operations and improves the overall earthquake resistance, wind resistance and other performance of the building. At the same time, its efficient construction characteristics have an irreplaceable driving role in the sustainable development of the construction industry.

[0003] In actual construction, there may be certain errors in the processing size and installation position of beams and columns. If the beam-column splicing position cannot be adjusted, the connection points between the beams and columns are difficult to align accurately, such as the bolt holes are difficult to align, resulting in installation difficulties or even inability to complete the splicing. After splicing, it will be in a non-designed stress state, resulting in additional bending stress and shear stress under the action of load, making the internal stress distribution of the structure uneven and reducing the bearing capacity of the structure. When it bears a large load or is subjected to external dynamic action, the overall stability of the structure will be affected, and local instability or overall damage will be prone to occur. Summary of the Invention

[0004] Technical problems solved

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides an adjustable spliced ​​steel structure beam and column for prefabricated buildings, which can effectively solve the problems of errors in the processing of beams and columns in the prior art, which may cause installation difficulties or even inability to complete splicing.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an adjustable spliced ​​steel structure beam column for an assembled building, comprising:

[0008] Steel column body;

[0009] The steel beam body is arranged orthogonally to the steel column body, and the axes of the two are perpendicular to each other in space;

[0010] A connecting piece, wherein the connecting piece is used to lock and position the steel column body and the steel beam body, and the connecting piece includes a positioning plate, an oblong hole is opened on the inner wall of the positioning plate, an external fixing block which can slide smoothly in its cavity is arranged inside the oblong hole, and a bolt which is threadedly connected to the external fixing block passes through the middle of the external fixing block. When the steel column body and the steel beam body are deformed due to load, temperature change or construction error, resulting in the position displacement of their own screw holes, the external fixing block moves within the limited space of the oblong hole by virtue of its geometric structure adapted to the oblong hole until it is aligned with the position after the deformation of the screw hole, so as to accurately position the deformed steel beam body and the steel column body;

[0011] Wherein, the inner wall of the oblong hole is provided with a limiting piece for locking the adjusted external fixing block;

[0012] Wherein, an end plate is provided above the connecting piece to reinforce the connection between the steel column body and the steel beam body.

[0013] Furthermore, a limiting plate is provided on the side of the inner wall of the oblong hole, and the limiting member includes a wedge block symmetrically arranged in the middle of the inner wall of the oblong hole, wherein the other end of one of the wedge blocks is fixedly connected to a slide plate slidably connected to the inner wall of the oblong hole, and the other end of the slide plate is fixedly connected to a side block, an extrusion block is fitted inside the side block, and a bolt 2 is threadedly connected to the middle of the other end of the extrusion block, and a positioning block is fixedly connected to the outer wall of the slide plate.

[0014] Furthermore, both ends of the external fixing block are fixedly connected to limiting blocks, the sides of the limiting block are fixedly connected to side plates, and the sides of the side plates are designed to be inclined outwards.

[0015] Furthermore, the side of the wedge block close to the external fixing block adopts a trapezoidal design, and in an initial state, the two side plates are slidingly connected to the side edges of the wedge block.

[0016] Furthermore, the number of the side blocks is two and they are arranged relative to each other with the center line of the skateboard as the center.

[0017] Furthermore, one side of the top and bottom ends of the positioning plate are fixedly connected to a clamping plate, a special-shaped groove is provided in the middle of the clamping plate, and rectangular grooves are symmetrically provided on both sides of the clamping plate.

[0018] Furthermore, the special-shaped groove is engaged with the special-shaped block fixedly connected to the end plate near the clamping plate, and the rectangular groove is engaged with the rectangular block symmetrically arranged on the end plate near the clamping plate.

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] The present invention is provided with an oblong hole. Since errors are inevitable in the processing of the steel column body and the steel beam body, the hole for connection is set as an oblong hole on the side of the positioning plate, which provides a larger space for bolt 1 to move. The oblong hole can allow bolt 1 to move within a certain range in the hole, so that the relative position of the steel column body and the steel beam body can be adjusted more flexibly during installation, solving the problem of difficulty in aligning the bolt holes due to processing errors and reducing the difficulty of installation.

[0021] The present invention features an adjustable wedge within the inner wall of the oblong hole (i.e., at the node gap). Its primary function is to compress the wedge by tightening bolt 2 after the steel column and beam are properly positioned. This compression fills the gap between the wedge and the external fixing block, while also applying a preload. This preload creates friction at the connecting surface between the steel column and beam, effectively preventing node slippage under load and enhancing the stability of the connection.

[0022] The combination of the oblong hole and the adjustable wedge in this invention achieves an effective transition from installation adjustment to connection and fixation. The oblong hole facilitates position adjustment during installation, allowing for smooth initial alignment of the steel column and beam bodies even with machining errors. The adjustable wedge then takes effect after alignment is complete, squeezing and filling the gap and applying a preload to transform the adjustable space created by the oblong hole into a reliable connection, ensuring the firmness and stability of the connection between the steel column and beam bodies. This combination solves installation problems while ensuring the quality of the structural connection.

[0023] The present invention is provided with an external fixing block, which cooperates with the oblong hole to limit the movement range of the external fixing block in the oblong hole, and at the same time transmits the force of the bolt to the structure around the oblong hole, making the connection more stable. Its shape is similar to the oblong hole, and can better fit the inner wall of the oblong hole, ensuring uniform force transmission.

[0024] The present invention is provided with a side plate, which is fixed to the side of the limit block, and its inclined surface cooperates with the wedge block. On the one hand, the side plate can increase the structural strength of the external fixing block, so that it can better withstand the force of the bolts and the wedge block; on the other hand, the inclined surface provides an action surface for the wedge block, which makes it easier for the wedge block to adjust and tighten the node by squeezing the side plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the connector structure according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection structure of a bolt 1 and a limit block according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of a limit block according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the split structure of the position limiting member according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the separation structure of the card plate and the end plate according to an embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the bottom surface structure of the end plate according to an embodiment of the present invention.

[0033] The numbers in the figure represent: 1. Steel column body; 2. Steel beam body; 3. Connector; 31. Positioning plate; 32. Oblong hole; 33. Limiting plate; 34. Limiting piece; 341. Wedge block; 342. Slide plate; 343. Positioning block; 344. Side block; 345. Extrusion block; 346. Bolt 2; 35. External fixing block; 351. Limiting block; 352. Side plate; 36. Bolt 1; 37. Clamp; 371. Special-shaped groove; 372. Rectangular groove; 5. End plate; 51. Special-shaped block; 52. Rectangular block. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] Example:

[0037] See also Figure 1-Figure 7 The present invention provides a technical solution for adjustable spliced ​​steel beams and columns for prefabricated buildings:

[0038] refer to Figure 1 and Figure 2The steel column body 1 and the steel beam body 2 are overlapped according to the design. When splicing, the connecting piece 3 needs to be installed at the corresponding position of the steel column body 1. The connecting piece 3 locks and positions the steel column body 1 and the steel beam body 2. The connecting piece 3 includes a positioning plate 31. The positioning plate 31 adopts an L-shaped design. The inner wall of the positioning plate 31 is provided with an oblong hole 32. The inner wall of the oblong hole 32 is provided with an external fixing block 35. The external fixing block 35 can move smoothly on the inner wall of the oblong hole 32. The internal thread of the external fixing block 35 is fixed with a bolt 36. When the steel column body 1 and the steel beam body 2 are deformed due to load, temperature change or construction error, resulting in the position offset of their own screw holes, the external fixing block 35 moves within the limited space of the oblong hole 32 by virtue of its geometric structure adapted to the oblong hole 32 until it is aligned with the position after the deformation of the screw hole, so as to accurately position the deformed steel beam body 2 and the steel column body 1.

[0039] like Figure 1 As shown, the steel column body 1 and the steel beam body 2 are H-beams. When the steel column body 1 and the steel beam body 2 are installed at the construction site, due to the accuracy of the processing equipment and improper force along the length direction of the beam during transportation, such as the unreasonable setting of the lifting point causing the beam to bend, the H-beam will be stretched, compressed or bent, which will cause the screw holes to deviate from the designed position in the length direction. The screw holes on the steel column body 1 and the steel beam body 2 cannot be accurately aligned with the screw holes of the positioning plate 31. The oblong hole 32 in the present invention provides a certain amount of adjustment space, so that the installer can move the external fixing block 35 within the range of the oblong hole 32 in the present invention, making it easier to align the connection position of the deformed steel column body 1 and the steel beam body 2. The design of the oblong hole 32 reduces the installation difficulties caused by processing errors. The construction personnel do not need to spend a lot of time and energy to align the bolt holes, and can complete the splicing and installation of the steel column body 1 and the steel beam body 2 more quickly, thereby shortening the construction period and improving the overall construction efficiency.

[0040] The oblong hole 32 in the present invention can allow a small amount of relative displacement between the steel column body 1 and the steel beam body 2. When the steel column body 1 or the steel beam body 2 undergoes deformation such as expansion, contraction, and bending, the connection part can be adaptively adjusted within the range of the oblong hole 32 in the present invention to avoid additional stress caused by excessive constraints on the deformation, thereby helping to protect the safety and durability of the structure.

[0041] During later maintenance or renovation of the building structure, if the relative positions of the steel column body 1 and the steel beam body 2 need to be fine-tuned, the oblong holes 32 of the present invention also provide convenience. By adjusting the stopper 34, the space in the oblong holes 32 of the present invention can be used to move and adjust the positions of the steel column body 1 or the steel beam body 2 within a small range without requiring large-scale modifications to the entire connection node, thus reducing the workload and cost of maintenance and renovation.

[0042] However, in order to facilitate the movement of the external fixing block 35, there is a certain gap between the oblong hole 32 and the side of the external fixing block 35, which may easily cause a series of problems after the steel column body 1 and the steel beam body 2 are connected. Due to the existence of the gap, relative displacement will occur between the steel column body 1 and the steel beam body 2 when the structure is under load, the connection tightness will decrease, and the overall stability of the structure will be threatened; at the same time, the load transfer path will be changed, and stress concentration will be formed at the end of the oblong hole 32 and other positions, the material will be easily fatigued and damaged, cracks will expand, and the bearing capacity will be reduced; when encountering vibration loads, the existence of the gap will reduce the stiffness of the connection part, induce vibration response, aggravate component wear, and even induce resonance; and the gap will also reduce the connection positioning accuracy of the steel column body 1 and the steel beam body 2, affect the appearance and use function of the structure, and cause uneven beam surface, column verticality deviation, etc. In view of this, the present invention is provided with a limit member 34. Since the design of the oblong hole 32 and the limit member 34 allows processing errors within a certain range, the requirements for the processing accuracy of the steel column body 1 and the steel beam body 2 are reduced, and the component scrapping and rework caused by excessive processing errors are reduced, thereby reducing production costs. At the same time, improving installation efficiency also indirectly reduces labor costs and equipment rental costs.

[0043] refer to Figure 2 and Figure 5 The limiting member 34 includes a wedge block 341 symmetrically arranged in the middle of the inner wall of the oblong hole 32, one end of which is fixedly connected to a slide plate 342 that is slidably connected to the inner wall of the oblong hole 32, and the other end of the slide plate 342 is fixedly connected to a side block 344, and an extrusion block 345 is fitted inside the side block 344, and a bolt 2 346 is threadedly connected to the middle of the other end of the extrusion block 345, and a positioning block 343 is fixedly connected to the outer wall of the slide plate 342.

[0044] After the external fixing block 35 is moved to the position aligned with the screw hole of the steel column body 1 or the steel beam body 2, the external fixing block 35 is aligned with the screw hole and connected by bolt 1 36. Then, bolt 2 346 is rotated. Bolt 2 346 pushes the extrusion block 345. The extrusion block 345 fits tightly with the side block 344 while exerting force on the slide plate 342. The slide plate 342 slides smoothly under the restriction of the positioning block 343. The slide plate 342 drives the wedge block 341 to move so that the wedge block 341 fits tightly with the surface of the external fixing block 35. The wedge block 341 fills the gap between the oblong hole 32 and the bolt by squeezing the side plate 352 and applies a pre-tightening force. When the steel column body 1 and the steel beam body 2 have slight displacement or deformation, the wedge block 341 can convert the gap into friction through its own extrusion action, prevent the node from slipping, and improve the stability of the connection node.

[0045] The external fixing block 35 accurately positions the bolt 36 in the oblong hole 32 and limits the movement of the bolt 1 36, ensuring the accurate connection position of the steel column body 1 and the steel beam body 2. At the same time, the force borne by the bolt 1 36 is evenly distributed to the surrounding structure of the oblong hole 32, avoiding local stress concentration on the hole wall, enhancing the connection strength, and improving the structural bearing capacity.

[0046] The side block 344 and the extrusion block 345 fit tightly together via the inclined surface. Utilizing the principle of the inclined surface, the force applied to the side block 344 can be efficiently converted into power to move the extrusion block 345 and its connected components. This design allows for large displacement adjustments with relatively small external forces, and the large contact area of ​​the inclined surface provides excellent stability and uniform force transmission, ensuring a smooth adjustment process. The slide plate 342 is fixedly connected to the extrusion block 345, accurately transmitting the movement of the extrusion block 345 and driving the stable movement of the wedge block 341. The wedge block 341 fills the gap between the steel column body 1 and the steel beam body 2 through its own movement, effectively reducing problems such as loose connections and vibrations caused by the gap. It also further strengthens the bolt fixation, making the connection tighter and enhancing structural stability.

[0047] From the basic fixation of bolt 1 36 with the external fixing block 35 to the gap-filling and bolt-reinforcing wedge 341, the synergistic effect of multiple structures comprehensively enhances the reliability of the connection between the steel column body 1 and the steel beam body 2, significantly reducing the risk of loosening and failure, and ensuring the stable operation of the structure under various working conditions. The inclined surfaces of the edge block 344 and the extrusion block 345, as well as the movement mechanism of the wedge block 341 driven by the slide 342, enable high-precision fine-tuning of the connection between the steel column body 1 and the steel beam body 2. During installation, it can better adapt to component processing errors and installation deviations, and dynamically adjust to deformation during use, improving the adaptability and safety of the structure. This structure effectively addresses the many issues caused by the gap in the oblong hole 32. Whether in conventional building environments or special working conditions such as complex loads and vibration, it can ensure the connection performance of the steel column body 1 and the steel beam body 2, adapting to different building needs and usage scenarios. During later maintenance, if the connection between the steel column body 1 and the steel beam body 2 needs to be inspected, repaired, or adjusted, it can be performed through the corresponding components, reducing maintenance costs and difficulty.

[0048] refer to Figure 2 、 Figure 3 and Figure 4 The two ends of the external fixing block 35 are fixedly connected to the limiting blocks 351, and the side of the limiting block 351 is fixedly connected to the side of the side plate 352. The side of the side plate 352 is designed to be inclined outward. The side of the wedge block 341 close to the external fixing block 35 adopts a trapezoidal design. In the initial state, the two side plates 352 are slidably connected to the side of the wedge block 341.

[0049] The shape of the external fixing block 35 is the same as that of the oblong hole 32, but the size is different. The external fixing block 35 can be accurately positioned in the oblong hole 32, limiting the movement range of the bolt 1 36 so that it can only move in the direction and range specified by the oblong hole 32, thereby ensuring the accuracy and stability of the connection between the steel column body 1 and the steel beam body 2, and avoiding the bolt 1 36 and the external fixing block 35 from shaking or shifting at will, resulting in connection failure.

[0050] The external fixing block 35 can evenly transfer the force borne by bolt 1 36 to the structure surrounding the oblong hole 32. Due to its larger contact area with the wall of the oblong hole 32, it can more effectively distribute the load than directly acting on the hole wall, reducing local stress concentration on the hole wall, improving the load-bearing capacity of the connection node between the steel column body 1 and the steel beam body 2, and thus enhancing the connection strength of the entire structure.

[0051] During installation, the external fixing block 35 is first placed within the oblong hole 32. The external fixing block 35 is then moved to assist in aligning the connection holes of the steel column body 1 and the steel beam body 2, and then bolt 1 36 is inserted to secure the connection. This method is much easier than directly aligning the bolts with the screw holes, reducing installation difficulty and improving efficiency. Furthermore, if fine-tuning the connection between the steel column body 1 and the steel beam body 2 is required later, this can be accomplished by moving the external fixing block 35, making the operation relatively simple.

[0052] The design of the side of the side plate 352 cooperates with the design of the side of the wedge block 341 to ensure that the external fixing block 35 moves smoothly on the inner wall of the oblong hole 32 in the initial state, avoiding violent collision or friction between the external fixing block 35 and the wall of the oblong hole 32, reducing damage to the wall of the oblong hole 32 and the external fixing block 35 itself, thereby protecting the integrity and performance of the structural components and extending their service life. The external fixing block 35 is ensured to maintain good contact with the wall of the oblong hole 32 during the adjustment process, ensuring a stable force transmission path. This can avoid loose connections or uneven force caused by the unsteady movement of the external fixing block 35, ensure the stability of the connection between the steel column body 1 and the steel beam body 2, and ensure the safety and reliability of the structure. The installer can more accurately control the movement position and distance of the external fixing block 35, improving the accuracy of the adjustment. The smooth movement also makes it easier for the installer to determine whether the external fixing block 35 has reached the desired position, reducing the number of repeated adjustments and further improving the efficiency of installation and adjustment.

[0053] Bolt 1 36, external fixing block 35, side plate 352, wedge block 341, and bolt 2 346 work together to adjust and tighten the connection node between the steel column body 1 and the steel beam body 2. During installation, the space in the oblong hole 32 is used to align the bolt holes of the steel column body 1 and the steel beam body 2 by moving the external fixing block 35 and the bolts. Then, the fixing bolts are tightened to cause the wedge block 341 to squeeze the side plate 352, thereby tightly connecting the steel column body 1 and the steel beam body 2 together and providing preload. During the use of the structure, when the steel column body 1 and the steel beam body 2 are deformed, the wedge block 341 can automatically adjust the degree of extrusion according to the deformation, maintaining a tight connection between the nodes and preventing them from loosening.

[0054] refer to Figure 2 、 Figure 6 and Figure 7 , an end plate 5 is provided above the connecting member 3 to reinforce the connection between the steel column body 1 and the steel beam body 2. The end plate 5 is symmetrically arranged at the upper and lower ends of the positioning plate 31. The top of the positioning plate 31 located above is flush with the upper surface of the steel column body 1. A clamping plate 37 is fixedly connected to the top and bottom ends of the positioning plate 31. A special-shaped groove 371 is provided in the middle of the clamping plate 37, and rectangular grooves 372 are symmetrically provided on both sides of the clamping plate 37. The special-shaped groove 371 is engaged with the special-shaped block 51 fixedly connected to the end plate 5 near the side of the clamping plate 37, and the rectangular groove 372 is engaged with the rectangular block 52 symmetrically arranged on the side of the end plate 5 near the side of the clamping plate 37.

[0055] The special-shaped groove 371 engages with the special-shaped block 51. This unique shape design enables precise positioning, ensuring the accuracy and stability of the connection between the steel column body 1 and the steel beam body 2. The middle height of the special-shaped groove 371 is greater than the edge height, allowing the special-shaped block 51 to fit better into the groove when engaged, increasing the tightness and stability of the connection, effectively preventing the end plate 5 from shaking or shifting at the connection point, and thus improving the overall quality of the connection between the steel column body 1 and the steel beam body 2.

[0056] The cross-shaped special-shaped groove 371 design can constrain the special-shaped block 51 from multiple directions, not only limiting the movement of the end plate 5 in the horizontal direction, but also providing good support and constraint in the vertical direction, so that the steel column body 1 and the steel beam body 2 are connected to form a tighter whole, thereby enhancing the integrity and seismic performance of the structure.

[0057] The clip 37 is connected to the end plate 5 via the engagement of the special-shaped groove 371 and the special-shaped block 51, making the installation process much simpler and faster than other complex connection methods. Construction personnel can quickly position and engage the clip 37 with the end plate 5, reducing installation time and workload. Furthermore, when the connection between the steel column body 1 and the steel beam body 2 needs to be inspected or disassembled, the clip 37 can be easily removed from the end plate 5, facilitating operation.

[0058] The special-shaped grooves 371 on both sides of the clamping plate 37, which engage with the special-shaped blocks 51, can cooperate with the end plates 5 to protect the connection between the steel column body 1 and the steel beam body 2. This can prevent external factors such as rain, dust, and debris from entering the connection area, protecting the connecting parts from corrosion, wear, and other damage, thereby extending the service life of the connection between the steel column body 1 and the steel beam body 2 and improving the durability of the structure.

[0059] When the structure deforms due to factors such as temperature changes and load changes, the design of the clamping plate 37 allows the node to have a certain amount of space for movement, adapting to the deformation of the structure without affecting the connection strength, and reducing the additional stress caused by the deformation.

[0060] The combination of these structures enables more uniform force transmission and dispersion, avoiding local stress concentration and improving the mechanical performance of the connection nodes between the steel column body 1 and the steel beam body 2. This helps to increase the fatigue life of the nodes and reduce the risk of damage to the structure during long-term use.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adjustable spliced ​​steel structure beam column for assembled buildings, characterized in that: include: Steel column body (1); A steel beam body (2), wherein the steel beam body (2) and the steel column body (1) are arranged orthogonally, and their axes are perpendicular to each other in space; A connecting piece (3), the connecting piece (3) is used to lock and position the steel column body (1) and the steel beam body (2), the connecting piece (3) includes a positioning plate (31), the inner wall of the positioning plate (31) is provided with an oblong hole (32), the oblong hole (32) is provided with an external fixing block (35) that slides smoothly in its cavity, the middle of the external fixing block (35) is penetrated by a bolt (36) that is threadedly connected to it, when the steel column body (1) and the steel beam body (2) are deformed due to load, temperature change or construction error, causing the position of their own screw holes to shift, the external fixing block (35) moves within the limited space of the oblong hole (32) by virtue of its geometric structure adapted to the oblong hole (32) until it is aligned with the position of the screw hole after deformation, so as to accurately position the deformed steel beam body (2) and the steel column body (1); Wherein, the inner wall of the oblong hole (32) is provided with a limiting member (34) for locking the adjusted external fixing block (35); Wherein, an end plate (5) is provided above the connecting member (3) for reinforcing the connection between the steel column body (1) and the steel beam body (2).

2. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 1 is characterized in that: A limiting plate (33) is provided on the side of the inner wall of the oblong hole (32), and the limiting member (34) includes a wedge block (341) symmetrically provided in the middle of the inner wall of the oblong hole (32), wherein the other end of one of the wedge blocks (341) is fixedly connected to a slide plate (342) slidably connected to the inner wall of the oblong hole (32), and the other end of the slide plate (342) is fixedly connected to a side block (344), an extrusion block (345) is fitted inside the side block (344), and a second bolt (346) is threadedly connected to the middle of the other end of the extrusion block (345), and a positioning block (343) is fixedly connected to the outer wall of the slide plate (342).

3. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 2 is characterized in that: The two ends of the external fixing block (35) are fixedly connected to the limiting blocks (351), the side edges of the limiting blocks (351) are fixedly connected to the side plates (352), and the side edges of the side plates (352) are designed to be inclined outwards.

4. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 3 is characterized in that: The side of the wedge block (341) close to the external fixing block (35) adopts a trapezoidal design, and in an initial state, the two side plates (352) are slidably connected to the side of the wedge block (341).

5. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 2, characterized in that: The side blocks (344) are provided in two numbers and are arranged relative to each other with the center line of the slide plate (342) as the center.

6. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 1 is characterized in that: A clamping plate (37) is fixedly connected to one side of the top and bottom ends of the positioning plate (31), a special-shaped groove (371) is provided in the middle of the clamping plate (37), and rectangular grooves (372) are symmetrically provided on both sides of the clamping plate (37).

7. The adjustable spliced ​​steel structure beam column for prefabricated buildings according to claim 6, characterized in that: The special-shaped groove (371) is engaged with a special-shaped block (51) fixedly connected to the end plate (5) on the side close to the clamping plate (37), and the rectangular groove (372) is engaged with a rectangular block (52) symmetrically arranged on the side of the end plate (5) close to the clamping plate (37).

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