Wrought steel joint connection member for a building steel structure
By using V-shaped connecting frames and triangular block structures in building steel structures, a multi-dimensional force-bearing system is formed, which solves the quality problem of weld root in steel plate connections and the insufficient force transmission of traditional connecting frames, thus achieving a high-efficiency improvement in torsional and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINQIANG (FUJIAN) GREEN HABITAT GRP CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
In existing steel structures, the quality of weld roots is difficult to guarantee when connecting steel plates, asymmetrical welding leads to large angular deformation, the internal quality of cast steel nodes is poor, and traditional connecting frames cannot effectively transfer lateral shear force and vertical load, making them prone to bending or breakage.
The system employs a V-shaped connecting frame and a triangular block structure, forming a multi-dimensional force-bearing system through high-strength expansion bolts and chemical anchors. This enhances the connection stiffness and torsional resistance, enabling simultaneous bearing of lateral shear force and vertical load.
It significantly improves the torsional and impact resistance of building steel structures, ensures connection accuracy and overall stability, avoids unilateral deformation, and enhances the pull-out and shear strength of nodes.
Smart Images
Figure CN224412802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building steel structure technology, and in particular to a forged steel node connection component for building steel structures. Background Technology
[0002] In steel structure construction, due to the stress requirements of the building and main structure, it is necessary to weld two or more thick steel plates together at a small angle. Currently, for the connection of steel structure nodes, direct welding or welding of cast steel node components are generally used. Although direct welding is simple and convenient, when two or more steel plates are directly welded together, due to the small included angle between the two steel plates, it is impossible to clean the root of the weld or add a welding backing plate. This leads to the inability to guarantee the quality of the weld root, making weld repairs easy, labor-intensive, and time-consuming. At the same time, because the welding of thick plates at this point can only be done in... When welding is performed on one side, the heat input to the weld is asymmetrical, and the angular deformation of the steel plate after welding is relatively large. That is, the included angle between the two steel plates changes due to the heat of welding, and it is difficult to correct it to the angle required before welding or in the design. Although the connection angle of each steel plate can meet the design requirements when welding cast steel node components, there are still problems: the internal quality of the cast steel parts is relatively poor, and defects such as internal porosity or slag inclusion are easy to occur. The welded cast steel parts are not easy to reach the design strength of the base material. Moreover, the welding process of cast steel parts has high requirements, especially the requirements for welding beveling, preheating and welding process are very strict.
[0003] Traditional planar connecting frames can only transmit loads in one direction. Lacking spatial stiffness, when lateral shear force and vertical load act simultaneously, the connecting frame in a single direction is prone to bending or breaking due to stress concentration, and cannot form an effective force transmission path. Utility Model Content
[0004] The purpose of this utility model is to provide a forged steel node connection component for building steel structures. The V-shaped connecting frames on both sides of the connector form a right-angle support structure, which can simultaneously bear the lateral shear force and vertical load of the steel structure node. The fixed triangular blocks enhance the overturning stiffness of the upper and lower ends of the connecting frames, and the triangular blocks supplement the lateral shear strength, significantly improving the torsional and impact resistance performance.
[0005] To achieve the above objectives, a forged steel node connection component for building steel structures is provided, comprising: a connector, wherein both sides of the connector abut against a connecting frame, and both upper and lower sides of the sidewall of the connecting frame are fixedly connected to fixing triangular blocks; the connecting frame has a plurality of first positioning holes inside, each first positioning hole containing a second high-strength expansion bolt, which is internally threaded; the sidewall of the connecting frame abuts against two reinforcing triangular blocks, each reinforcing triangular block having two connecting grooves on the side away from the connecting frame; each connecting groove having two second positioning holes inside, the interiors of the two second positioning holes communicating with the interiors of the first positioning holes; each of the two second positioning holes containing a first high-strength expansion bolt, which extends into the interior of the connector. A multi-dimensional load-bearing structure is formed through the connecting frame, triangular blocks, and double bolt system, improving the node load-bearing capacity and connection reliability.
[0006] According to the forged steel node connection component for a building steel structure, the position of the connecting frame and the position of the reinforcing triangular block are arranged parallel to each other, and the reinforcing triangular block is located between two fixed triangular blocks. The parallel arrangement and the positioning between the triangular blocks form a bidirectional support plane, enhancing the stiffness and stability of the node within the plane.
[0007] According to the forged steel node connection component of a building steel structure, the second positioning holes are symmetrically arranged on the left and right sides of the connection groove, and the number of the second positioning holes corresponds to the number of connection grooves. This symmetrical distribution and corresponding number ensures balanced bolt force, avoids unilateral deformation of the connection groove, and improves connection accuracy.
[0008] According to the forged steel node connection component for a building steel structure, the number of second high-strength expansion bolts and the number of first positioning holes are correspondingly arranged, and the positions of the first and second positioning holes are parallel. The correspondence and parallel arrangement of the bolt quantity and hole positions optimizes the force direction, enhancing the node's pull-out resistance and overall connection strength.
[0009] According to the forged steel node connection component of the building steel structure, two reinforcing triangular blocks are symmetrically arranged on the upper and lower sides of the inner side of two fixed triangular blocks. The cross-sections of the two connecting frames are V-shaped with an included angle of 90 degrees. The symmetrical arrangement and the V-shaped cross-section form a right-angle support system, which meets the requirements of orthogonal connection and improves the torsional resistance.
[0010] According to the forged steel joint connection component for a building steel structure, the inner surface of the first high-strength expansion bolt and the connecting groove abuts against each other, and both the first and second high-strength expansion bolts are reinforced with chemical anchors. The bolt abutting against the connecting groove and the chemical anchors enhances the reliability of force transmission and compensates for the shortcomings of expansion fixation under complex stress.
[0011] According to the forged steel node connection component of a building steel structure, the side walls of the two connecting frames abut against fixing members, and the two connecting frames are symmetrically arranged on the left and right sides of the fixing members. The symmetrical abutting fixing members form an outer constraint boundary, balancing the force and restricting the lateral displacement of the connecting frames.
[0012] According to the forged steel node connection component of a building steel structure, two connecting frames are located on one side of the fixing member and are arranged in the same manner as the connecting member, which is located on the front surface of the fixing member. The consistent arrangement on both sides forms a symmetrical connection structure, realizing the force flow transmission and mechanical performance balance between the front and rear components.
[0013] The above-mentioned solution has the following beneficial effects:
[0014] This utility model is equipped with a connecting frame, a fixed triangular block, a second high-strength expansion screw, a reinforcing triangular block, a first high-strength expansion screw, and a connector. The V-shaped connecting frame on both sides of the connector forms a right-angle support structure, which can simultaneously withstand the lateral shear force and vertical load of the steel structure node. The fixed triangular block enhances the overturning stiffness of the upper and lower ends of the connecting frame, and the reinforcing triangular block supplements the lateral shear strength, significantly improving the torsional and impact resistance performance.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a perspective view of a forged steel node connection component for a building steel structure according to the present invention;
[0018] Figure 2 This is a front view of a forged steel node connection component for a building steel structure according to the present invention;
[0019] Figure 3 This is a cross-sectional perspective view of a forged steel node connection component for a building steel structure according to the present invention;
[0020] Figure 4 For utility model Figure 3 Enlarged view of the structure at point A in the middle.
[0021] Legend:
[0022] 1. Connector; 2. Fixing component; 3. Connecting bracket; 4. Fixing triangular block; 5. First positioning hole; 6. Second positioning hole; 7. First high-strength expansion screw; 8. Reinforcing triangular block; 9. Connecting groove; 10. Second high-strength expansion screw. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] Reference Figure 1-4 This utility model discloses a forged steel node connection component for a building steel structure, comprising: a connector 1, with connecting frames 3 abutting on both sides of the connector 1. The connecting frames 3 form a basic support structure for the node connection by abutting the connector 1 on both sides. Fixed triangular blocks 4 are fixedly connected to the upper and lower sides of the side walls of the connecting frames 3. The fixed triangular blocks 4 are welded and fixed to the side walls of the connecting frames 3 to enhance the structural stability of the upper and lower ends of the connecting frames 3. Several first positioning holes 5 are provided inside the connecting frames 3. The first positioning holes 5 provide installation and positioning space for second high-strength expansion screws 10, ensuring the accuracy of the bolt installation position. The second high-strength expansion screws 10 are installed inside the first positioning holes 5, and the second high-strength expansion screws 10 are threadedly connected to the internal threads of the connector 1. After passing through the first positioning holes 5, the second high-strength expansion screws 10 engage with the threads of the connector 1, realizing the vertical fixed connection between the connecting frames 3 and the connector 1. Two reinforcing triangular blocks 8 abut against the side walls of the connecting frames 3. The strong triangular block 8 supplements the shear strength of the side of the connecting frame 3 by abutting against the side wall of the connecting frame 3. Two connecting grooves 9 are opened on the side of the two strong triangular blocks 8 away from the connecting frame 3. The connecting grooves 9 provide installation guide space for the first high-strength expansion screw 7 and limit the lateral positioning position of the bolt. Two second positioning holes 6 are opened in the interior of the two connecting grooves 9. The second positioning holes 6 form bolt installation channels in the connecting grooves 9 to ensure spatial alignment with the first positioning hole 5. The interior of the two second positioning holes 6 is connected to the interior of the first positioning hole 5. The second positioning holes 6 and the first positioning hole 5 are connected to form a bolt through channel, which facilitates the connection between the first high-strength expansion screw 7 and the connecting piece 1. The first high-strength expansion screw 7 is provided in the interior of the two second positioning holes 6 and extends into the interior of the connecting piece 1. After passing through the second positioning holes 6, the first high-strength expansion screw 7 is anchored into the connecting piece 1 to achieve the lateral fixed connection between the strong triangular block 8 and the connecting piece 1.
[0025] The connecting bracket 3 and the reinforcing triangular block 8 are positioned parallel to each other, forming a bidirectional support plane and enhancing the rigidity within the node plane. The reinforcing triangular block 8 is located between two fixed triangular blocks 4, embedded within the spacing of the fixed triangular blocks 4, forming a three-dimensional support structure with fixed upper and lower ends and reinforced in the middle. The second positioning holes 6 are symmetrically arranged on the left and right sides of the connecting groove 9. The symmetrical distribution of the second positioning holes 6 ensures that the first high-strength expansion screw 7 is subjected to balanced force, preventing deformation of the connecting groove 9 on one side. The number of second positioning holes 6 corresponds to the number of connecting grooves 9, with each connecting groove 9 matching two second positioning holes 6. To ensure the reliability of the bolt connection within a single connecting slot 9, the number of second high-strength expansion bolts 10 and the number of first positioning holes 5 are correspondingly set. The number of first positioning holes 5 determines the arrangement density of the second high-strength expansion bolts 10, ensuring the connection strength between the connecting frame 3 and the connecting piece 1. The positions of the first positioning holes 5 and the second positioning holes 6 are set parallel to each other. The parallel arrangement of the positioning holes ensures that the bolt force direction is consistent, improving the overall pull-out resistance of the node. Two reinforcing triangular blocks 8 are symmetrically arranged on the upper and lower sides of the inner side of the two fixed triangular blocks 4. The symmetrically distributed reinforcing triangular blocks 8 and the fixed triangular blocks 4 form a "cross-shaped" support system, enhancing the node's torsional resistance. The cross-section of each connecting frame 3 is V-shaped with an included angle of 90 degrees. The V-shaped cross-section makes the connecting frame 3 form a right-angle support structure, which is suitable for the orthogonal connection requirements of steel structure nodes. The inner surface of the first high-strength expansion bolt 7 and the connecting groove 9 abuts, and the bolt shank is attached to the inner wall of the connecting groove 9, transferring the lateral shear force to the reinforcing triangular block 8 and preventing the bolt from being sheared and eccentric. Both the first high-strength expansion bolt 7 and the second high-strength expansion bolt 10 are reinforced with chemical anchors. The chemical anchors enhance the bolt anchoring force through the bonding effect, making up for the lack of reliability of expansion fixation under complex stress. The side walls of the two connecting frames 3 abut with fasteners 2, and the fasteners 2 abut with the outer surface of the connecting frame 3. The sidewalls form a constraint boundary around the node, restricting the lateral displacement of the connecting frame 3. The two connecting frames 3 are symmetrically arranged on the left and right sides of the fixing member 2. The symmetrical arrangement of the connecting frames 3 makes the fixing member 2 bear force evenly, avoiding bending deformation of the fixing member 2 due to force on one side. The two connecting frames 3 are located on one side of the fixing member 2 and are set in the same way as the connecting member 1. The structure of the connecting frame 3 on the side of the fixing member 2 replicates the design of the side of the connecting member 1, realizing the symmetry of the connection structure on both sides of the node and the balance of mechanical performance. The connecting member 1 is located on the front surface of the fixing member 2. The connecting member 1 and the fixing member 2 form a three-dimensional connection structure with the front and rear superimposed. The force flow is transmitted between the front and rear components through the connecting frame 3.
[0026] Working principle: First, clean the front surface of connector 1, the surface of fastener 2, and the contact surfaces of connector 3 and reinforcing triangular block 8 to ensure that there is no oil or rust affecting the connection accuracy. Position connector 3: Place the two V-shaped connectors 3 against the left and right sides of connector 1 respectively, aligning the included angle of connector 3 with the edge of connector 1, ensuring that the contact surfaces of connector 3 and connector 1 are tightly fitted. Insert the second high-strength expansion screw 10 through the first positioning hole 5 inside connector 3 and screw it into the threaded hole inside connector 1. Install 5 pieces one by one to achieve vertical fixation of the connecting frame 3 and the connecting piece 1, forming a right-angle support foundation. Position the reinforcing triangular blocks 8: Place the two reinforcing triangular blocks 8 against the side wall of the connecting frame 3 respectively, ensuring that the reinforcing triangular blocks 8 are located between the two fixed triangular blocks 4 and are parallel to the connecting frame 3. Align the connecting groove 9 of the reinforcing triangular blocks 8 with the direction of the connecting piece 1. Adjust the position until the second positioning hole 6 in the connecting groove 9 is parallel to and through the first positioning hole 5 of the connecting frame 3. Insert the first high-strength expansion screw 7 into the second positioning hole 6 and the first positioning hole 5 in sequence. The first positioning hole 5 is screwed into the connector 1. The lateral shear force is transmitted through the contact between the screw rod and the inner wall of the connecting groove 9. At the same time, chemical anchors are used to reinforce the fixing at the screw anchoring end to ensure the lateral connection strength between the reinforced triangular block 8 and the connector 1. Positioning and fixing part 2: Place the fixing part 2 outside the two connecting frames 3, so that the connecting frames 3 are symmetrically distributed on the left and right sides of the fixing part 2. The structure of the connecting frame 3 on the side of the fixing part 2 (such as positioning hole, contact surface) is completely consistent with the side of the connector 1. Repeat the operation of the first and second steps. By fixing the triangular block 4, the reinforcing triangular block 8 and the corresponding high-strength expansion screws (second high-strength expansion screw 10, first high-strength expansion screw 7), the connecting frame 3 and the fixing part 2 are fixedly connected to form a symmetrical three-dimensional support structure. Confirm that all high-strength expansion screws are tightened in place, the chemical anchors are cured, there are no gaps between the connecting frame 3, the fixing triangular block 4, the reinforcing triangular block 8 and the connector 1 and fixing part 2, the force of each component is balanced, and there is no obvious deformation or eccentricity. Finally, concrete is poured to improve the overall stability and service life.
[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A forged steel node connection member for a building steel structure, comprising: The connector (1) is characterized in that: the left and right sides of the connector (1) are abutted by the connecting frame (3), the upper and lower sides of the side wall of the connecting frame (3) are fixedly connected with the fixing triangular block (4), the connecting frame (3) is provided with a plurality of first positioning holes (5), the first positioning holes (5) are provided with second high-strength expansion screws (10), and the second high-strength expansion screws (10) are threadedly connected to the inside of the connector (1), the side wall of the connecting frame (3) abuts against two reinforcing triangular blocks (8), the two reinforcing triangular blocks (8) are provided with two connecting grooves (9) on the side away from the connecting frame (3), the two connecting grooves (9) are provided with two second positioning holes (6), the inside of the two second positioning holes (6) is connected to the inside of the first positioning holes (5), the inside of the two second positioning holes (6) is provided with a first high-strength expansion screw (7), and the first high-strength expansion screw (7) extends into the inside of the connector (1).
2. The forged steel node connection component for a building steel structure according to claim 1, characterized in that: The position of the connecting frame (3) is parallel to the position of the reinforcing triangular block (8), and the reinforcing triangular block (8) is located between two fixed triangular blocks (4).
3. The forged steel node connection component for a building steel structure according to claim 1, characterized in that: The second positioning holes (6) are symmetrically arranged on the left and right sides of the connecting groove (9), and the number of the second positioning holes (6) corresponds to the number of the connecting groove (9).
4. A forged steel node connection member for a building steel structure according to claim 1, characterized in that: The number of the second high-strength expansion screws (10) and the number of the first positioning holes (5) are set in correspondence, and the positions of the first positioning holes (5) and the second positioning holes (6) are set in parallel.
5. A forged steel node connection component for a building steel structure according to claim 1, characterized in that: Two reinforcing triangular blocks (8) are symmetrically arranged on the upper and lower sides of the inner side of the two fixed triangular blocks (4). The cross-section of the two connecting frames (3) is V-shaped and the included angle is 90 degrees.
6. A forged steel node connection component for a building steel structure according to claim 1, characterized in that: The inner surfaces of the first high-strength expansion screw (7) and the connecting groove (9) abut against each other, and both the first high-strength expansion screw (7) and the second high-strength expansion screw (10) are reinforced with chemical anchors.
7. A forged steel node connection component for a building steel structure according to claim 1, characterized in that: The side walls of the two connecting frames (3) abut against the fixing member (2), and the two connecting frames (3) are symmetrically arranged on the left and right sides of the fixing member (2).
8. A forged steel node connection component for a building steel structure according to claim 1, characterized in that: The two connecting brackets (3) are located on one side of the fixing member (2) and are set in the same way as the connecting member (1). The connecting member (1) is located on the front surface of the fixing member (2).