A connecting structure of a steel structure joint

Abstract

This utility model relates to a connection structure for a steel structure node. Two steel structure beams are positioned on the left and right sides of a steel structure column via a connection structure. The two steel structure beams and the steel structure column have two connection nodes, including the steel structure column, the steel structure beams, and corner fixing reinforcements. It also includes fixed sleeves at each connection node and a movable detachable connector connecting the two fixed sleeves. The movable detachable connector includes a left ear plate, a right ear plate, and movable semicircular blocks. The left and right ear plates are respectively positioned at the same end of the two fixed sleeves, with a space between them. Two movable semicircular blocks are positioned between the left and right ear plates, with a second space between them. The movable semicircular blocks slide with the left and right ear plates via arc-shaped grooves. This utility model has the following advantages: it improves the overall rigidity and load-bearing capacity of the node and increases assembly and disassembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure, and specifically relates to a connection structure for steel structure nodes. Background Technology

[0002] In modern steel structure engineering, the performance of the joint connections between steel columns and the steel beams on both sides directly determines the safety, stability, and construction efficiency of the overall structure. Currently, common connection methods often employ fixed sleeves with numerous high-strength bolts for rigid fixation. While this method can achieve basic moment and shear force transfer, its reliance on a large number of bolts in practical applications reveals several significant drawbacks: First, due to the unique structure of the joints, multiple rows of densely packed bolts are often required to ensure connection stiffness and uniform stress distribution. This increased number of bolts not only leads to densely packed holes in the joint area, significantly weakening the effective cross-section of the component, but also creates significant stress concentration around the holes. Under long-term dynamic loading, this can easily induce fatigue cracks, directly affecting the load-bearing capacity and durability of the joint. Second, the use of a large number of bolts places extremely high demands on the precision of component processing and on-site installation. Even the slightest deviation in hole position can lead to assembly difficulties, or even require on-site hole enlargement or component replacement, severely impacting construction progress and increasing material waste. Furthermore, the difficulty of disassembly and assembly hinders the modification and recycling of steel structures.

[0003] Furthermore, bolt groups are prone to uneven internal force distribution under stress, and some bolts may fail prematurely due to overload, triggering a chain reaction and weakening the overall safety redundancy of the joint. During long-term use, bolts are prone to loosening under the influence of vibration and temperature changes, requiring frequent maintenance and secondary tightening. This not only increases maintenance costs throughout the entire life cycle but also poses a potential threat to the long-term safety of the structure. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a connection structure for steel structure nodes, thereby improving the overall stiffness and load-bearing capacity of the nodes and increasing the efficiency of assembly and disassembly.

[0005] The purpose of this utility model is achieved through the following technical solution: a connection structure for a steel structure node, wherein two steel structure beams are placed on the left and right sides of a steel structure column through the connection structure, and the two steel structure beams and the steel structure column have two connection nodes, including a steel structure column, steel structure beams and corner fixing reinforcements, and also including a fixed sleeve set at each connection node and a movable detachable connector connecting the two fixed sleeves; The detachable connector includes a left ear plate, a right ear plate, and movable semicircular blocks. The left ear plate and the right ear plate are respectively located at the same end of the two fixed sockets. There is a space between the left ear plate and the right ear plate. The two movable semicircular blocks are placed between the left ear plate and the right ear plate, and there is a space between the two movable semicircular blocks. The movable semicircular blocks slide with the left ear plate and the right ear plate through arc-shaped grooves.

[0006] A further improvement of this utility model is that the fixed sleeve includes a first side plate fixedly connected to the side end face of the steel structure column, a second side plate fixedly connected to the side end face of the steel structure beam, and a connecting base plate connecting the bottom of the two second side plates. The connecting base plate is in contact with the bottom of the steel structure beam, and the two second side plates are respectively vertically fixed to both sides of the connecting base plate to form a U-shaped structure.

[0007] A further improvement of this utility model is that: the movable semicircular block of the movable detachable connector is provided with a groove, the movable semicircular block is fixedly connected to the movable lever, and by rotating the movable lever, the movable semicircular block is driven to rotate in the arc-shaped sliding groove, thereby realizing the fixation or separation of the two fixed sleeves.

[0008] A further improvement of this utility model is that the corner fixing reinforcement is a triangular or trapezoidal steel plate, one side of which is connected to the steel structure column and the other side is connected to the steel structure beam.

[0009] A further improvement of this utility model is that an anti-slip pad or a friction-type coating is provided between the contact surface of the connecting base plate of the fixed sleeve and the steel structure column.

[0010] A further improvement of this utility model is that the left ear plate and the right ear plate are integrally formed or welded to the first side plate of the fixing sleeve.

[0011] A further improvement of this utility model is that the material of the detachable connector is high-strength alloy steel, and its surface is treated with hot-dip galvanizing or epoxy zinc-rich coating.

[0012] This utility model has the following advantages compared with the prior art: 1. This utility model adopts a connector composed of a left ear plate, a right ear plate, and a movable semicircular block. The movable semicircular block is rotated by sliding with the ear plate through an arc-shaped groove. In the closed state, this structure can effectively lock the two fixed sleeves to form a stable lateral connection and withstand the tensile and shear forces at the node. When disassembly is required, the node can be quickly separated simply by rotating the movable semicircular block along the groove. This not only greatly reduces the number of bolts used and avoids stress concentration and cross-sectional weakening caused by bolt groups, but also significantly improves the disassembly and assembly efficiency of the node. It is particularly suitable for engineering scenarios that require repeated disassembly and assembly or temporary reinforcement. 2. In this utility model, the fixed sleeve adopts a U-shaped structure composed of a first side plate, a second side plate, and a connecting base plate. The first side plate is fixed to the steel structural column, the second side plate is fixed to the steel structural beam, and the connecting base plate is arranged close to the bottom of the steel structural beam, forming a three-sided enclosed load-bearing system. This structure can effectively transfer the load at the end of the steel structural beam to the column through the second side plate and the connecting base plate, improving the force transmission path that relies solely on bolt shear resistance in traditional connections. This increases the overall stiffness and load-bearing capacity of the joint. Simultaneously, the U-shaped structure, to a certain extent, constrains the lateral displacement and torsion of the beam, enhancing the stability of the joint under complex stress conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 A schematic diagram of the structure of the fixed sleeve.

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of the detachable connector.

[0016] Figure 4 for Figure 3 Internal diagram of the removable connector.

[0017] Numbering on the map: 1-Steel structure column, 2-Steel structure beam, 3-Corner fixing reinforcement, 4-Fixed sleeve, 5-Modible detachable connector; 41-First side plate, 42-Second side plate, 43-Connecting base plate; 51-Left ear plate, 52-Right ear plate, 53-Modible semicircular block, 54-Space 1, 55-Space 2, 56-Arc-shaped groove, 57-Inset groove, 58-Modible paddle. Detailed Implementation

[0018] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship, such as those based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, terms such as “connection,” “provided with,” and “have” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can be described as a mechanical connection, a direct connection, or a connection through an intermediate medium. Those skilled in the art can understand the basic meaning of the above terms in this utility model according to the specific circumstances. Example 1

[0021] A connection structure for a steel structure node, referring to Figure 1 Two steel structure beams 2 are placed on the left and right sides of a steel structure column 1 through a connecting structure. The two steel structure beams 2 and the steel structure column 1 have two connection nodes, including the steel structure column 1, the steel structure beams 2 and the corner fixing reinforcement 3, and also include a fixing sleeve 4 set at each connection node and a movable detachable connector 5 connecting the two fixing sleeves 4. The detachable connector 5 includes a left ear plate 51, a right ear plate 52, and a movable semicircular block 53. The left ear plate 51 and the right ear plate 52 are respectively located at the same end of the two fixed sleeves 4. There is a space 1 54 between the left ear plate 51 and the right ear plate 52. The two movable semicircular blocks 53 are placed between the left ear plate 51 and the right ear plate 52, and there is a space 2 55 between the two movable semicircular blocks 53. The movable semicircular blocks 53 slide with the left ear plate 51 and the right ear plate 52 through the arc-shaped sliding groove 56.

[0022] Reference Figure 2 The fixed sleeve 4 includes a first side plate 41 fixedly connected to the side end face of the steel structure column 1, a second side plate 42 fixedly connected to the side end face of the steel structure beam 2, and a connecting base plate 43 connecting the bottom of the two second side plates 42. The connecting base plate 43 is in contact with the bottom of the steel structure beam 2, and the two second side plates 42 are respectively vertically fixed on both sides of the connecting base plate 43 to form a U-shaped structure.

[0023] This utility model employs a connector consisting of a left ear 51, a right ear plate 52, and a movable semicircular block 53. The movable semicircular block 53 rotates through the sliding engagement of the arc-shaped groove 56 with the left and right ear plates. In the closed state, this structure can effectively lock the two fixed sleeves 4, forming a stable lateral connection and withstanding the tensile and shear forces at the joint. When disassembly is required, the joint can be quickly separated simply by rotating the movable semicircular block 53 along the arc-shaped groove 56. This not only significantly reduces the number of bolts used and avoids stress concentration and cross-sectional weakening caused by bolt groups, but also significantly improves the efficiency of joint assembly and disassembly. It is particularly suitable for engineering scenarios that require repeated assembly and disassembly or temporary reinforcement.

[0024] Reference Figure 3 , Figure 4The movable semicircular block 53 of the movable detachable connector 5 is provided with a groove 57. The movable semicircular block 53 is fixedly connected to the movable lever 58. By rotating the movable lever 58, the movable semicircular block 53 is driven to rotate in the arc-shaped slide groove 56, thereby fixing or separating the two fixed sleeves 4.

[0025] When disassembly is required, rotating the movable lever 58 rotates the space 55 between the two movable semicircular blocks 53 to a position corresponding to the gap between the two fixed sleeves 4. At this time, the connector does not constrain the fixed sleeves 4, and the two fixed sleeves 4 are in a separable and detachable state, allowing the bolts to be quickly removed. Conversely, when installation and fixation are required, rotating the movable semicircular blocks 53 makes the gap between their space 55 and the fixed sleeves 4 perpendicular. In this state, the solid parts of the two movable semicircles 53 respectively clamp the left and right ear plates laterally, thereby forcing the two fixed sleeves 4 to come close together and be firmly locked, forming a stable lateral connection that can effectively withstand the tensile and shear forces at the joint. Example 2

[0026] Based on Example 1, referring to Figure 2 In this invention, the fixed sleeve 4 adopts a U-shaped structure composed of a first side plate 41, a second side plate 42, and a connecting base plate 43. The first side plate 41 is fixed to the steel column 1, the second side plate 42 is fixed to the steel beam 2, and the connecting base plate 43 is arranged close to the bottom of the steel beam 2, forming a three-sided enclosed load-bearing system. This structure effectively transfers the load at the end of the steel beam to the column body through the second side plate 42 and the connecting base plate 43, improving the force transmission path that relies solely on bolt shear resistance in traditional connections. This enhances the overall stiffness and load-bearing capacity of the joint. Simultaneously, the U-shaped structure, to a certain extent, constrains the lateral displacement and torsion of the steel beam 2, enhancing the stability of the joint under complex stress conditions.

[0027] Furthermore, the corner fixing reinforcement 3 is a triangular or trapezoidal steel plate, one side of which is connected to the steel structure column 1 and the other side is connected to the steel structure beam 2.

[0028] The corner fixing reinforcement 3, the fixed sleeve 4, and the movable detachable connector 5 are organically combined to form a multi-force transmission and reinforcement mechanism. The corner fixing reinforcement 3, as a traditional reinforcement component, is responsible for bearing part of the bending moment; the fixed sleeve 4 provides the main connection and support functions; and the movable detachable connector 5 enables rapid locking and disengagement in the lateral direction. The three work together to ensure the strength and stiffness of the node, and also to give it good deformation adaptability, providing a certain energy dissipation capacity under dynamic loads such as earthquakes or wind vibrations.

[0029] An anti-slip pad or friction coating is provided between the contact surface of the connecting base plate 43 of the fixed sleeve 4 and the steel structure column 1.

[0030] The increased friction coefficient between the contact interfaces allows the nodes to transfer part of the load through interface friction when subjected to vertical and horizontal loads, thereby reducing the stress on the movable detachable connector 5 and other connecting components.

[0031] The left ear plate 51 and the right ear plate 52 are integrally formed or welded to the first side plate 41 of the fixing sleeve 4.

[0032] Furthermore, the detachable connector 5 is made of high-strength alloy steel, and its surface is treated with hot-dip galvanizing or epoxy zinc-rich coating to extend its service life and reduce the frequency and cost of later maintenance.

[0033] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure for a steel structure node, wherein two steel structure beams (2) are placed on the left and right sides of a steel structure column (1) through a connection structure, the two steel structure beams (2) and the steel structure column (1) having two connection nodes, comprising a steel structure column (1), steel structure beams (2) and corner fixing reinforcement members (3), characterized in that: It also includes a fixed socket (4) provided at each connection node and a detachable connector (5) connecting the two fixed sockets (4); The detachable connector (5) includes a left ear plate (51), a right ear plate (52) and a movable semicircular block (53). The left ear plate (51) and the right ear plate (52) are respectively located on the same side of the two fixed sleeves (4). There is a space 1 (54) between the left ear plate (51) and the right ear plate (52). The two movable semicircular blocks (53) are placed between the left ear plate (51) and the right ear plate (52) and there is a space 2 (55) between the two movable semicircular blocks (53). The movable semicircular blocks (53) slide with the left ear plate (51) and the right ear plate (52) through an arc-shaped sliding groove (56).

2. The connection structure of a steel structure node according to claim 1, characterized in that: The fixed sleeve (4) includes a first side plate (41) fixedly connected to the side end face of the steel structure column (1), a second side plate (42) fixedly connected to the side end face of the steel structure beam (2), and a connecting base plate (43) connecting the bottom of the two second side plates (42). The connecting base plate (43) is in contact with the bottom of the steel structure beam (2), and the two second side plates (42) are respectively vertically fixed to both sides of the connecting base plate (43) to form a U-shaped structure.

3. The connection structure of a steel structure node according to claim 2, characterized in that: The movable semicircular block (53) of the movable detachable connector (5) is provided with a groove (57). The movable semicircular block (53) is fixedly connected to the movable paddle (58). By rotating the movable paddle (58), the movable semicircular block (53) is driven to rotate in the arc-shaped slide groove (56) to realize the fixation or separation of the two fixed sleeves (4).

4. The connection structure of a steel structure node according to claim 3, characterized in that: The corner fixing reinforcement (3) is a triangular or trapezoidal steel plate, one side of which is connected to the steel structure column (1) and the other side is connected to the steel structure beam (2).

5. The connection structure of a steel structure node according to claim 4, characterized in that: An anti-slip pad or friction coating is provided between the contact surface of the connecting base plate (43) of the fixed sleeve (4) and the steel structure column (1).

6. The connection structure of a steel structure node according to claim 5, characterized in that: The left ear plate (51) and the right ear plate (52) are integrally formed or welded to the first side plate (41) of the fixing sleeve (4).

7. The connection structure of a steel structure node according to claim 6, characterized in that: The material of the detachable connector (5) is high-strength alloy steel, and its surface is treated with hot-dip galvanizing or epoxy zinc-rich coating.

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