Fabricated beam through type bolt connection beam column joint and construction method thereof

Abstract

The invention relates to the technical field of steel structures, and discloses an assembly type beam-through bolt connection beam-column joint which is used for connecting a steel beam and a steel column, the beam-column joint comprises a connecting frame, one end of the connecting frame is connected with the end of the steel beam in an inserted mode and fixed through a bolt, and the other end of the connecting frame is rotationally provided with a mounting disc and locked through a limiting mechanism; a clamp is mounted on the side, away from the connecting frame, of the mounting disc, two clamping parts which are oppositely arranged are mounted on the clamp, the distance between the two clamping parts is adjustable, and the two clamping parts correspondingly clamp the two sides of the flange of the steel column correspondingly. The assembling grooves of the connecting frames are connected with the ends of the steel beams in an inserted mode, the bolts penetrate through the first round holes and the groove holes to form rigid connection, on-site welding is not needed, then the flange plates of the steel columns are clamped on the two sides through the clamps so that the flange plates can be matched with the flange widths of the steel columns of multiple specifications, and the limiting mechanisms are combined for locking the rotating angles of the mounting discs; angle adjustment between the steel beam and the steel column is achieved, and precise positioning of a complex space structure is met.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structures, and in particular to an assembled beam-through bolt-connected beam-column node and a construction method thereof. Background Art

[0002] The through-type connection of steel structure beams adopts the bayonet connection method between beams. Compared with the traditional welding method, the through-type connection method has the advantages of strong structure, uniform force, simple construction, and easy disassembly. The through-type connection of steel structure beams is usually suitable for places with large structural volumes such as buildings, bridges, and factories, which have high structural requirements. In addition, it is also increasingly used in some modern factories and industrial manufacturing fields.

[0003] In the current steel structure field, in construction scenarios of complex spatial structures such as commercial complexes, gymnasiums, and industrial plants, the defects of traditional beam-column joints are more prominent, as follows: 1. Fixed size leads to poor adaptability and high customization costs Traditional beam-column joints are mostly designed with fixed dimensions. A single-size steel beam can only match steel columns with specific flange widths. For example, in a commercial complex project, the steel column flange widths were 150mm, 200mm, and 250mm. Traditional joints required customizing three different models, increasing customization costs by 40% compared to standard parts and extending lead times. Furthermore, if dimensional deviations occur on-site (such as a ±5mm error in steel column installation), traditional joints cannot adaptively adjust. For example, during construction of a factory building, a 3mm deviation in steel column flange width resulted in the inability to install 20 joints, resulting in high rework costs. In industrial plant construction, steel column specifications for different equipment areas may vary due to varying loads. Traditional joints must be designed individually for each specification. For example, one automobile production line had five different steel column specifications, and the cost of customizing traditional joints accounted for 15% of the steel structure cost. Furthermore, the wait for the customized joints to arrive resulted in significant construction delays. 2. Lack of angle adjustment capability makes complex structure construction difficult Traditional nodes can only achieve 90° vertical connections and cannot meet the requirements of complex structures such as inclined beams and mansard roofs. During the construction of a gymnasium dome, steel beams needed to be connected at multiple angles such as 15° and 30°. Traditional nodes required on-site welding to adjust the angle. Single-node welding took a long time, and welding deformation caused angle deviations of up to ±2°. The final dome contour had a large error, forcing rework and causing significant economic losses.

[0004] In order to solve the above problems, the present application proposes an assembled beam-through bolt-connected beam-column node and a construction method thereof. Summary of the Invention

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes an assembled beam-through bolt-connected beam-column node and a construction method thereof.

[0006] The present invention proposes an assembled beam-through bolt-connected beam-column node for connecting steel beams and steel columns. The beam-column node includes a connecting frame, one end of which is plugged into the end of the steel beam and fixed with bolts, and the other end of the connecting frame is rotatably mounted with a mounting plate and locked by a limit mechanism. A clamp is mounted on the side of the mounting plate away from the connecting frame, and the clamp is equipped with two clamping parts that are arranged opposite to each other and have an adjustable spacing. The two clamping parts respectively clamp the two sides of the flange of the steel column. In response to the problem that traditional beam-column nodes have fixed dimensions and non-adjustable angles, this design adopts a "plug-in + bolt" quick connection mode. After the assembly slot of the connecting frame is plugged into the end of the steel beam, a high-strength bolt is passed through the first circular hole and the slot to form a rigid connection. The mounting plate can rotate around the rotating column and cooperate with the limit mechanism to achieve angle adjustment. The clamp drives the clamping part to move through a bidirectional screw to adapt to the flange width of steel columns of various specifications, solving the pain point that traditional nodes require customized processing and effectively improving construction efficiency.

[0007] As a further optimized solution of the present invention, the clamp has two movable ends arranged opposite to each other and moving in opposite directions, one end of the clamping portion is mounted on the movable end of the clamp, and a limiting groove for clamping the steel column flange plate is formed between the other end of the clamping portion and the clamp; The movable end of the clamp is driven by a bidirectional screw, so that the distance between the two limit slots can be adjusted to adapt to steel column flanges of different specifications.

[0008] As a further optimized solution of the present invention, the clamping portion is L-shaped, the short side of the L-shape is vertically mounted on the movable end of the clamp, the long side of the L-shape is parallel to the side of the clamp away from the mounting plate to form a limiting groove, and the openings of the two limiting grooves are opposite to each other; A threaded hole is provided at the end of the L-shaped long side of the clamping part, and a limit bolt is threadedly sleeved thereon. Second circular holes corresponding to and adapted to the limit bolts are provided on both sides of the flange plate of the steel column. When the flange plate of the steel column is located in the limit groove, the limit bolt passes through the second circular hole to complete the locking reinforcement; The L-shaped clamping part has a long side length of 200mm and a short side length of 100mm. The limit groove formed is 100mm deep, which can effectively prevent lateral displacement of the steel column flange. After the limit bolt (M20) is inserted through the second circular hole, the pre-tightening torque reaches 200N·m, forming a rigid connection between the clamping part and the flange plate, with a shear bearing capacity of 80kN.

[0009] As a further optimized solution of the present invention, the clamp includes a base mounted on a mounting plate, a bidirectional screw is rotatably mounted inside the base, and a handle is mounted on the shaft end of the bidirectional screw, the threads at both ends of the bidirectional screw are rotated in opposite directions and are both threadedly sleeved with a slider, the clamping portion is mounted on the slider, and the slider is slidably assembled with the inner cavity of the base; The bidirectional screw adopts a trapezoidal thread. When the handle is turned, the sliders at both ends move synchronously in opposite directions. The sliding fit clearance between the slider and the inner cavity of the base is 0.2mm, ensuring smooth movement. The operating torque of the handle is 15≤N·m and can be easily adjusted by one person.

[0010] As a further optimized solution of the present invention, a slide groove parallel to the bidirectional screw is opened on the side of the base away from the mounting plate, the width of the slide groove is smaller than the width of the inner cavity of the base, the slider is convex, the lower end of the slider is slidably assembled with the inner cavity of the base, and the upper end of the slider is slidably assembled with the slide groove; Both ends of the bidirectional screw have an optical axis section, and the optical axis section is rotatably connected to the end of the base through a bearing, and the handle is a hexagonal head design; The convex slider is 40mm wide at the bottom and 20mm wide at the top, forming a guide structure with the slide groove (22mm wide) to prevent the slider from rotating. The optical axis of the bidirectional screw is supported by a deep groove ball bearing, with a rotational resistance torque of ≤0.5N·m. The hexagonal head of the handle is sized to accommodate standard wrenches, facilitating on-site operation.

[0011] As a further optimized solution of the present invention, the limiting mechanism includes a limiting ring and a limiting assembly. The limiting ring is centrally installed on the outer periphery of one side of the mounting plate close to the connecting frame. The limiting assembly is installed on the connecting frame, and the limiting assembly has a limiting rod with adjustable length at one end close to the mounting plate. The free end of the limiting rod is opposite to the limiting ring and is clamped to limit.

[0012] As a further optimized solution of the present invention, the limiting ring has an annular continuously distributed latching tooth on the side opposite to the limiting rod. The limiting rod includes a rod body installed on the limiting assembly and with an adjustable length. The free end of the rod body is equipped with limiting teeth opposite to and adapted to the latching teeth of the limiting ring. The limiting teeth are engaged with the latching teeth to complete the limiting locking. The limiting ring has 72 annular latching teeth, which can form an angle adjustment accuracy of one gear every 5°.

[0013] The limit ring has 72 teeth evenly distributed around the circumference. When the limit teeth of the limit rod engage with the teeth, the angle can be adjusted in 5° steps. The angle positioning accuracy is ±0.5°. The axial thrust of the limit rod reaches 100kN. It is suitable for complex structures such as inclined beams and mansard roofs. For example, in the construction of a 15° inclined beam, the angle deviation can be controlled within ±0.5°.

[0014] As a further optimized solution of the present invention, the limit assembly includes a mounting seat mounted on the outer side of the connecting frame, a sleeve is mounted on one end of the mounting seat close to the mounting plate, an end of the limit rod away from the limit ring extends into the sleeve and is slidably assembled with each other, a threaded rod is centrally arranged inside the sleeve, one end of the threaded rod is rotatably connected to the mounting seat and driven by a rotating shaft, and the other end of the threaded rod is threadedly connected to the limit rod; The interior of the mounting seat is hollow, and the end of the threaded rod away from the limit rod is the optical axis end and is rotatably connected to one end surface of the mounting seat. The rotating shaft is rotatably mounted on one side of the mounting seat and is perpendicular to the axis of the threaded rod. The optical axis end of the threaded rod and one end of the rotating shaft both extend into the mounting seat and are connected through a bevel gear set. The other end of the rotating shaft is located outside the mounting seat and is designed with a hexagonal head, and is adjusted by a wrench. The number of the limiting components is at least two, and at least two limiting components are arranged circumferentially along the outer wall of the connecting frame; The threads of the threaded rod and the limit rod cooperate, and the rotating shaft drives the threaded rod to rotate through the bevel gear set. The two limit components are symmetrically arranged and operate synchronously during adjustment to ensure that the mounting plate is balanced. The adjustment stroke of a single limit component is 50mm, which meets the angle adjustment requirements.

[0015] As a further optimized solution of the present invention, the inner wall of the sleeve is provided with guide grooves uniformly distributed along its length and circumferentially, the end of the limit rod away from the limit ring slides and extends into the sleeve, and the outer wall is provided with guide blocks that are the same in number and correspond to the guide grooves, and the guide blocks are slidably assembled with the guide grooves; The fitting clearance between the guide groove and the guide block (4 pieces, 90° apart) is 0.1mm, which prevents the limit rod from rotating and ensures precise engagement between the limit teeth and the card teeth. The sliding friction coefficient of the guide block is 0.05, with low movement resistance and smooth adjustment.

[0016] A construction method for a prefabricated beam-through bolt connection beam-column node, the specific steps are as follows: S1 completes the insertion of the end of the steel beam into the assembly slot of the connecting frame, so that the first circular hole and the slot are automatically aligned. Then, high-strength bolts are passed through the first circular hole and the slot, and pre-tightening force is applied to achieve a rigid connection between the steel beam and the connecting frame. S2 drives the bidirectional screw to rotate by turning the handle with a wrench, so that the sliders at both ends of the bidirectional screw approach each other to clamp the two sides of the flange of the steel column. Then, the second circular holes on both sides of the steel column flange are aligned with the threaded holes on the clamping part. The limit bolts are passed through the second circular holes and the threaded holes, and a pre-tightening force is applied to achieve the connection and fixation between the steel column and the mounting plate. S3 rotates the mounting plate to the desired mounting angle, and drives the rotating shaft to rotate through the wrench. Under the transmission action of the bevel gear set, the threaded rod is driven to rotate, and the threaded rod drives the rod body and the limit teeth to extend. When the limit teeth engage with the teeth on the limit ring, the mounting angle is fixed; The construction method adopts modular operation. The centering error of the steel beam and the connecting frame is ≤1mm. The pre-tightening force of the high-strength bolts is controlled by a torque wrench to ensure the rigidity of the connection. When clamping the steel column, the slider moves a certain distance for each rotation of the bidirectional screw until the limit groove fits tightly against the flange. When adjusting the angle, the limit tooth engages with the next gear tooth every time the mounting plate rotates 72°, achieving a 5° angle adjustment. The entire construction process does not require welding, which greatly shortens the construction period.

[0017] The assembled beam-through bolted beam-column node and its construction method proposed in the present invention have the following beneficial effects: (1) The assembly slot of the connecting frame is plugged into the end of the steel beam, and a bolt is used to penetrate the first circular hole and the slot to form a rigid connection. No on-site welding is required. The flange plate of the steel column is then clamped on both sides by a clamp. The clamp drives the two clamping parts to move closer or farther away from each other to adapt to the flange width of steel columns of various specifications. It can also adapt to on-site dimensional deviations to avoid rework caused by installation failures. Combined with the locking of the rotation angle of the mounting plate by the limit mechanism, the angle between the steel beam and the steel column can be adjusted to meet the precise positioning of complex spatial structures and avoid angle deviations caused by welding deformation, thereby reducing economic losses, eliminating the need for customized processing, reducing construction costs, and shortening construction period. (2) The 72 annular teeth of the limiting ring engage with the limiting teeth of the limiting rod, allowing for angle adjustment in 5-degree increments. During the construction of inclined beams, a wrench drives the rotating shaft, causing the threaded rod to extend the limiting rod. The limiting teeth engage with the teeth to fix the angle, with an angle deviation of ≤±0.5°, meeting the precise alignment requirements of complex structures such as mansard roofs and inclined supports. (3) The connecting frame, mounting plate, clamps and other components of this application are all prefabricated in the factory and connected on site by bolts. During maintenance, damaged parts can be replaced by simply removing the corresponding bolts, which can shorten the time of a single maintenance. While reducing the workload of on-site welding, it can also reduce labor costs and shorten the construction period.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly structure of the assembled beam-column node with through-type bolts provided in this application; Figure 2 This is a schematic diagram of the split structure of the assembled beam-through bolt-connected beam-column node provided in this application; Figure 3 This is a first-perspective structural diagram of the assembled beam-through bolt-connected beam-column node provided in this application; Figure 4Schematic diagram of the cross-sectional structure of the fixture for connecting beam-column nodes with through-type bolts for prefabricated beams provided in this application; Figure 5 This is a second perspective structural diagram of the assembled beam-through bolt connection beam-column node provided in this application; Figure 6 This is a schematic cross-sectional structure diagram of the limiting component of the assembled beam-through bolt connection beam-column node provided in this application.

[0020] Description of the drawings: 1. Steel beam; 2. Steel column; 3. Connecting frame; 4. Mounting plate; 5. Clamp; 51. Base; 52. Bidirectional screw; 53. Handle; 54. Slider; 55. Slide; 6. Clamping part; 7. Limiting ring; 8. Limiting assembly; 81. Limiting rod; 811. Rod body; 812. Limiting tooth; 82. Mounting seat; 83. Sleeve; 84. Threaded rod; 85. Rotating shaft; 86. Bevel gear set; 87. Guide groove; 88. Guide block; 9. Locking bolt; 10. Slotted hole; 11. First circular hole; 12. Second circular hole. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention, and are not to be construed as limiting the present invention.

[0022] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0023] In the field of steel structure construction, traditional beam-column joints have problems such as fixed size and difficult angle adjustment, making them difficult to meet the construction requirements of complex spatial structures. The prefabricated beam-through bolted beam-column joint and its construction method proposed in this invention achieve efficient connection and precise positioning of steel beams and steel columns through modular design and adjustable mechanisms. The specific implementation method is as follows: like Figure 1-Figure 5As shown, the node structure mainly consists of a connecting frame 3, a mounting plate 4, a clamp 5, and a limiting mechanism. One end of the connecting frame 3 is plugged into the end of the steel beam 1 and fixed with bolts, while the other end is rotatably mounted on the mounting plate 4. The clamp 5 is installed on the side of the mounting plate 4 away from the connecting frame 3. The two clamping parts 6 on the clamp 5 can move relative to each other to clamp the two sides of the flange of the steel column 2. The limiting mechanism includes a limiting ring 7 and a limiting assembly 8, which are used to lock the rotation angle of the mounting plate 4.

[0024] like Figure 1 and Figure 2 As shown, the end of the steel beam 1 is inserted into the assembly slot of the connecting frame 3. After the slot hole 10 is automatically aligned with the first circular hole 11 of the steel beam 1, a high-strength bolt is passed through and pre-tightened with a torque of 200N·m to form a rigid connection. The insertion design error is ≤1mm, and no on-site welding is required. The connection time for a single node is shortened to 10 minutes.

[0025] like Figure 3 and Figure 4 As shown, the base 51 of the clamp 5 is installed on the mounting plate 4, and the threads at both ends of the internal bidirectional screw 52 are rotated in opposite directions. When the handle 53 is turned, the slider 54 drives the clamping part 6 to move synchronously in the opposite direction. The clamping part 6 is L-shaped, and the short side is vertically installed on the slider 54, and the long side is parallel to the base 51 to form a limit groove, which can be adapted to the steel column 2 with a flange width of 100-300mm. When the flange of the steel column 2 is inserted into the limit groove, the limit bolt passes through the second circular hole 12 and the threaded hole of the clamping part 6 to achieve rigid fixation, and the shear bearing capacity reaches 80kN.

[0026] like Figure 2 and Figure 5 As shown, the mounting plate 4 can rotate around the connecting frame 3, and the limiting ring 7 has 72 teeth distributed circumferentially, which cooperate with the limiting teeth 812 of the limiting assembly 8 to achieve 5° angle adjustment; like Figure 6 As shown, the threaded rod 84 of the limit assembly 8 is transmitted to the rotating shaft 85 through the bevel gear set 86. When the rotating shaft 85 is rotated by the wrench, the rod body 811 drives the limit tooth 812 to extend, and locks the angle after engaging with the teeth of the limit ring 7. The positioning accuracy is ±1°, which is suitable for complex structures such as inclined beams and mansard roofs.

[0027] Specifically, if Figure 6 As shown, the guide groove 87 on the inner wall of the sleeve 83 cooperates with the guide block 88 of the limit rod 81 with a gap of 0.1mm to prevent the limit rod 81 from rotating and ensure that the limit tooth 812 is precisely engaged with the latch tooth. The axial thrust of a single limit component 8 reaches 100kN. The two sets of symmetrically arranged limit components can balance the force on the mounting plate 4 and avoid angular deviation.

[0028] In one embodiment, in a commercial complex project, this node structure was used to connect 200 sets of steel beams and steel columns, shortening the construction period by 45 days and reducing labor costs by 30% compared with traditional welding processes. The factory prefabrication rate of modular components reached 90%, and only bolt connections were required on site. The installation time of a single node was shortened from the traditional 2 hours to 30 minutes.

[0029] In one embodiment, during the construction of the inclined support of a certain gymnasium, by adjusting the inclination angle of the mounting plate from 4 to 15°, after the limiting tooth 812 engages with the limiting ring 7, the measured angle deviation is ≤0.5°, which meets the design requirements. The node can adapt to the angle adjustment range of -45° to +45°, solving the problem that traditional nodes cannot cope with complex spatial structures.

[0030] The construction process is as follows: 1. Insert the end of the steel beam 1 into the assembly slot of the connecting frame 3. Pass the high-strength bolt through the first circular hole 11 and the slotted hole 10. Apply pre-tightening force with a torque wrench. 2. Turn the handle 53 to clamp the clamping part 6 to the flange of the steel column 2, and fix it with the limit bolt passing through the second circular hole 12; 3. Rotate the mounting plate 4 according to the design requirements, and use a wrench to drive the rotating shaft 85 so that the limiting teeth 812 engage with the teeth of the limiting ring 7 to complete the angle locking.

[0031] In summary, this beam-column node has achieved standardization, efficiency and precision of steel structure connections through mechanical structure innovation, providing technical support for the development of prefabricated buildings and having significant engineering application value.

[0032] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An assembled beam-through bolted beam-column node for connecting a steel beam (1) and a steel column (2), characterized in that: The beam-column node comprises a connecting frame (3), one end of the connecting frame (3) is plugged into the end of the steel beam (1) and fixed with bolts, the other end of the connecting frame (3) is rotatably mounted with a mounting plate (4) and locked by a limiting mechanism, a clamp (5) is mounted on the side of the mounting plate (4) away from the connecting frame (3), and two clamping parts (6) are mounted on the clamp (5) that are arranged opposite to each other and have adjustable spacing, and the two clamping parts (6) respectively correspond to the two sides of the flange of the clamping steel column (2).

2. The assembled beam-through bolted beam-column node according to claim 1, characterized in that: The clamp (5) has two movable ends that are arranged opposite to each other and move in opposite directions. One end of the clamping portion (6) is mounted on the movable end of the clamp (5), and a limiting groove for clamping the flange plate of the steel column (2) is formed between the other end of the clamping portion (6) and the clamp (5).

3. The assembled beam-through bolted beam-column node according to claim 2, characterized in that: The clamping portion (6) is L-shaped, the short side of the L-shape is vertically mounted on the movable end of the clamp (5), and the long side of the L-shape is parallel to the side of the clamp (5) away from the mounting plate (4) to form a limiting groove, and the openings of the two limiting grooves are opposite.

4. The assembled beam-through bolted beam-column node according to claim 1, characterized in that: The clamp (5) includes a base (51) mounted on a mounting plate (4), a bidirectional screw (52) is rotatably mounted inside the base (51), and a handle (53) is mounted on the shaft end of the bidirectional screw (52), the threads at both ends of the bidirectional screw (52) are rotated in opposite directions and are both threadedly sleeved with a slider (54), the clamping portion (6) is mounted on the slider (54), and the slider (54) is slidably assembled with the inner cavity of the base (51).

5. The assembled beam-through bolted beam-column node according to claim 4, characterized in that: A chute (55) parallel to the bidirectional screw (52) is provided on one side of the base (51) away from the mounting plate (4). The width of the chute (55) is smaller than the width of the inner cavity of the base (51). The slider (54) is convex-shaped. The lower end of the slider (54) is slidably assembled with the inner cavity of the base (51), and the upper end of the slider (54) is slidably assembled with the chute (55).

6. The assembled beam-through bolted beam-column node according to any one of claims 1 to 5, characterized in that: The limiting mechanism comprises a limiting ring (7) and a limiting assembly (8), wherein the limiting ring (7) is centrally mounted on the periphery of one side of the mounting plate (4) close to the connecting frame (3), the limiting assembly (8) is mounted on the connecting frame (3), and the limiting assembly (8) has a limiting rod (81) with adjustable length at one end close to the mounting plate (4), and the free end of the limiting rod (81) is opposite to the limiting ring (7) and is clamped to limit the position.

7. The assembled beam-through bolted beam-column node according to claim 6, characterized in that: The limiting ring (7) has a ring-shaped continuously distributed latching tooth on one side opposite to the limiting rod (81). The limiting rod (81) includes a rod body (811) mounted on the limiting assembly (8) and having an adjustable length. The free end of the rod body (811) is mounted with a limiting tooth (812) opposite to and adapted to the latching tooth of the limiting ring (7). The limiting tooth (812) is engaged with the latching tooth to complete the limiting locking.

8. The assembled beam-through bolted beam-column node according to claim 6, characterized in that: The limiting assembly (8) includes a mounting seat (82) mounted on the outer side of the connecting frame (3), a sleeve (83) is mounted on one end of the mounting seat (82) close to the mounting plate (4), an end of the limiting rod (81) away from the limiting ring (7) extends into the sleeve (83) and is slidably assembled with each other, a threaded rod (84) is centrally arranged inside the sleeve (83), one end of the threaded rod (84) is rotatably connected to the mounting seat (82) and driven by the rotating shaft (85), and the other end of the threaded rod (84) is threadedly connected to the limiting rod (81).

9. The assembled beam-through bolted beam-column node according to claim 6, characterized in that: The inner wall of the sleeve (83) is provided with guide grooves (87) uniformly distributed along its length and circumferentially. One end of the limiting rod (81) away from the limiting ring (7) slides and extends into the sleeve (83), and the outer wall is provided with guide blocks (88) that are the same in number and corresponding to the guide grooves (87). The guide blocks (88) are slidably assembled with the guide grooves (87).

10. A construction method for a prefabricated beam-column joint with through-type bolts, characterized in that: The specific steps are as follows: S1 completes the insertion of the end of the steel beam (1) into the assembly slot of the connecting frame (3), so that the first circular hole (11) and the slot hole (10) are automatically aligned, and then a high-strength bolt is passed through the first circular hole (11) and the slot hole (10), and a pre-tightening force is applied to achieve a rigid connection between the steel beam (1) and the connecting frame (3); S2 drives the bidirectional screw (52) to rotate by turning the handle (53) with a wrench, so that the sliders (54) at both ends of the bidirectional screw (52) approach each other to clamp the two sides of the flange of the steel column (2), and then align the second circular holes (12) on both sides of the flange of the steel column (2) with the threaded holes on the clamping part (6), and pass the second circular holes (12) and the threaded holes through the limiting bolts, and apply pre-tightening force to achieve the connection and fixation between the steel column (2) and the mounting plate (4); S3 rotates the mounting plate (4) to the desired mounting angle, drives the rotating shaft (85) to rotate by a wrench, and drives the threaded rod (84) to rotate under the transmission action of the bevel gear set (86). The threaded rod (84) drives the rod body (811) and the limiting teeth (812) to extend. When the limiting teeth (812) are engaged with the teeth on the limiting ring (7), the mounting angle is fixed.

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