A high-efficiency installation node structure of a steel structural member

Abstract

The utility model discloses a kind of node structures of steel structural member efficient installation, relate to building steel structure technical field, including first I-steel, second I-steel and the node connecting structure being arranged between first I-steel and second I-steel, node connecting structure includes the first connecting steel plate being arranged in the web of first I-steel and the second connecting steel plate being arranged in the web of second I-steel, multiple first cross strips are longitudinally and equally spaced on the board face of second connecting steel plate, first cross strip one end extends to the outside of second connecting steel plate edge and is formed with tenon, multiple second cross strips are longitudinally and equally spaced on the board face of first connecting steel plate, the mortise and tenon joint of being adapted to make tenon embedded is formed between adjacent two second cross strips, and it is connected by bolt nut connecting piece between the tenon located in the web of second I-steel two sides;The utility model can quickly realize geometric positioning, and installation is simple and fast and overall safety is high.

Description

Technical Field

[0001] This utility model relates to the field of steel structure technology for buildings, and specifically to a node structure for efficient installation of steel structural components. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. Steel structures are mainly composed of components such as beams, steel columns, and steel trusses made of steel sections and steel plates. Among them, I-beams are widely used in bridge construction due to their strong structure.

[0003] Existing technologies, such as Chinese patent CN120465635A, disclose an assembled steel beam. Several steel beam components can be assembled together through docking components to facilitate on-site assembly. The length of the steel beam can be increased as needed to adjust and flexibly configure according to different building requirements and site conditions. However, this structure has the disadvantages of low installation efficiency and long construction period. Utility Model Content

[0004] The purpose of this utility model is to provide a node structure for efficient installation of steel structural components, aiming to solve the problem of low installation efficiency in the aforementioned background art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a node structure for efficient installation of steel structural components, comprising a first I-beam, a second I-beam, and a node connection structure disposed between the first I-beam and the second I-beam. The free ends of the first I-beam and the second I-beam are arranged facing each other. The node connection structure comprises two first connecting steel plates and two second connecting steel plates. The two first connecting steel plates are respectively fixedly installed on both sides of the web of the first I-beam by bolt and nut connectors. The two second connecting steel plates are respectively fixedly installed on both sides of the web of the second I-beam by bolt and nut connectors. Multiple first horizontal strips are arranged longitudinally at equal intervals on the surface of the second connecting steel plates. One end of each first horizontal strip extends to the outer edge of the second connecting steel plate and forms a tenon. Multiple second horizontal strips are arranged longitudinally at equal intervals on the surface of the first connecting steel plates. A mortise is formed between two adjacent second horizontal strips, allowing the tenon to fit and be inserted. The tenons located on both sides of the web of the second I-beam are connected by bolt and nut connectors.

[0006] Furthermore, the tenon is either dovetail-shaped or T-shaped.

[0007] Furthermore, the first and second horizontal bars are rectangular structures.

[0008] This utility model has the following beneficial effects: This utility model provides a node structure for efficient installation of steel structural components. Through the matching design of tenons and mortises, installation is simple and quick, and geometric positioning can be achieved quickly without repeated calibration of hole positions. The initial connection of steel beams can be completed simply by inserting the tenon into the mortis. There is no need to build additional temporary support structures. The tenon and mortise are interlocked with bolts for fastening, avoiding local stress concentration, improving the shear bearing capacity of the node, and greatly improving the overall safety of the steel structure. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the second I-beam in this utility model; Figure 3 This is an assembly drawing of the first connecting steel plate and the second connecting steel plate in this utility model; Figure 4 This is a schematic diagram of the structure of the first connecting steel plate in this utility model; Figure 5 This is a schematic diagram of the structure of the second connecting steel plate in this utility model; In the diagram: 1. First I-beam; 2. Second I-beam; 3. First connecting steel plate; 4. Second connecting steel plate; 5. First crossbar; 6. Tenon; 7. Second crossbar; 8. Mortise and tenon. Detailed Implementation

[0010] like Figures 1 to 5 As shown, a node structure for efficient installation of steel structural components is presented. This utility model achieves efficient installation and stable force transmission of steel structural components through a composite connection mechanism of "modular pre-installation + tenon and mortise positioning + bolt fastening," as detailed below: Both the first I-beam 1 and the second I-beam 2 are made of H250×125×6×9 H-beams. The first connecting steel plate 3 and the second connecting steel plate 4 are made of Q355B low-alloy high-strength steel. They are fixed to both sides of the web of the first I-beam 1 and the second I-beam 2 by bolts, which can limit the local buckling of the web of the steel beam and improve the overall structural stability.

[0011] In the node connection structure, a tenon 6 is formed at the end of the first horizontal bar 5 of the second connecting steel plate 4, and a mortise 8 is formed between adjacent second horizontal bars 7 of the first connecting steel plate 3. The tenon 6 and the mortise 8 are shaped and have an interference fit, and the cross-section can be dovetail-shaped. This structure can provide precise positioning guidance during the installation stage: on the one hand, the geometric shapes of the tenon 6 and the mortise 8 are complementary, which can quickly align the axes of the first I-beam 1 and the second I-beam 2, avoiding the problem of difficult hole alignment in traditional bolt connections; on the other hand, the interference fit can immediately form temporary fixation after splicing, without the need for additional temporary fixation. The tenon 6 provides support and creates stable conditions for subsequent bolt tightening, significantly shortening the installation and adjustment time. At the same time, the special shape of the tenon 6 and the mortise 8 provides bidirectional horizontal and vertical constraints, limiting the relative displacement of the first I-beam 1 and the second I-beam 2 in the plane. The tenons 6 located on both sides of the web of the second I-beam 2 are connected by bolt and nut connectors. When the bolts become slightly loose due to long-term use, the tenon and mortise structure can temporarily bear the load, preventing sudden failure of the joint. Conversely, when the tenon and mortise structure undergoes slight deformation due to accidental stress, the bolts can limit the expansion of deformation and ensure structural safety.

[0012] When the structure is subjected to horizontal loads, the force is first transmitted to the second connecting steel plate 4 through the web of the second I-beam 2, then to the first connecting steel plate 3 through the interference fit surface of the first crossbar 5 and the second crossbar 7, and finally to the first I-beam 1, completing the force flow path. Since the first crossbar 5 and the second crossbar 7 are rectangular structures with partial interference fit, the contact area is large, which can effectively disperse the lateral force and avoid local stress concentration.

[0013] When the structure is subjected to vertical loads, the load is transferred to the second connecting steel plate 4 through the flange and web of the second I-beam 2. Part of the load is transferred directly to the first connecting steel plate 3 through the interlocking surface of the tenon 6 and the mortise 8, and the other part is transferred to the first connecting steel plate 3 through the bolts connecting the tenon 6. The dual force transmission path can ensure the stable transmission of vertical force, and the bolt tightening can further improve the force transmission efficiency and prevent the mortise and tenon structure from loosening due to long-term stress. The specific operation process of this utility model is as follows: At the factory or construction site, two first connecting steel plates 3 are respectively attached to both sides of the web of the first I-beam 1, the bolt holes on the steel plates and web are aligned, bolts are inserted and initially tightened, so that the first connecting steel plate 3 and the first I-beam 1 form a stable modular unit. At this time, the second crossbar 7 on the first connecting steel plate 3 has formed a complete tenon 8. Two second connecting steel plates 4 are attached to both sides of the web of the second I-beam 2, the bolt holes are aligned, bolts are inserted and initially tightened, so that the second connecting steel plate 4 and the second I-beam 2 form a modular unit. At this time, the tenon 6 at the end of the first crossbar 5 is in the state of waiting to be spliced, and the bolts are M20 high-strength bolts.

[0014] The column is fixed to the foundation support by bolts or welding. Then, the first I-beam 1 with the first connecting steel plate 3 is vertically connected to the column by bolts or welding. After adjusting the level of the first I-beam 1, the permanent fixation is completed.

[0015] The second I-beam 2 with the second connecting steel plate 4 is lifted using hoisting equipment. The height and horizontal angle of the second I-beam 2 are adjusted so that the tenon 6 on the second connecting steel plate 4 is precisely aligned with the mortise 8 on the first connecting steel plate 3 of the first I-beam 1, so that the tenon 6 is gradually inserted into the mortise 8. Since the first horizontal bar 5 and the second horizontal bar 7 are partially interference fit, a uniform pushing force can be applied to the end of the second I-beam 2 by jacking during the insertion process until the tenon 6 is completely inserted into the mortise 8. At this time, the second I-beam 2 and the first I-beam 1 achieve preliminary docking, with the axes aligned and no obvious gap.

[0016] Install the bolt and nut connector for the tenon 6. Pass the bolt through the pre-drilled bolt hole on the tenon 6 on one side of the web of the second I-beam 2, then through the web of the second I-beam 2 and the tenon 6 on the other side. Put on the washer, tighten the nut at the other end of the bolt, and tighten the bolt with a torque wrench according to the tightening torque specified in the design. When tightening, tighten gradually from the middle to both sides or symmetrical positions to ensure that the two tenons 6 are tightly connected to the first connecting steel plate 3, and at the same time ensure that the connection node between the second I-beam 2 and the first I-beam 1 has sufficient strength and rigidity.

[0017] After the bolts are tightened, a comprehensive inspection of the entire node connection structure is carried out. The fit between the tenon 6 and the mortise 8 is checked to ensure that there are no looseness or excessive gaps. The tightening torque of all bolts is checked to ensure that it meets the design requirements. The levelness of the second I-beam 2 and the docking accuracy with the first I-beam 1 are checked using tools such as a level and a tape measure to ensure that the entire installation structure meets the design and specification requirements.

Claims

1. A node structure for efficient installation of steel structural components, comprising a first I-beam (1), a second I-beam (2), and a node connection structure disposed between the first I-beam (1) and the second I-beam (2), wherein the free ends of the first I-beam (1) and the second I-beam (2) are arranged facing each other, characterized in that: The node connection structure includes two first connecting steel plates (3) and two second connecting steel plates (4). The two first connecting steel plates (3) are fixedly installed on both sides of the web of the first I-beam (1) by bolt and nut connectors. The two second connecting steel plates (4) are fixedly installed on both sides of the web of the second I-beam (2) by bolt and nut connectors. Multiple first horizontal strips (5) are arranged longitudinally at equal intervals on the surface of the second connecting steel plate (4). One end of the first horizontal strip (5) extends to the outer edge of the second connecting steel plate (4) and forms a tenon (6). Multiple second horizontal strips (7) are arranged longitudinally at equal intervals on the surface of the first connecting steel plate (3). A mortise (8) is formed between two adjacent second horizontal strips (7) so that the tenon (6) can be fitted and inserted. The tenons (6) located on both sides of the web of the second I-beam (2) are connected by bolt and nut connectors.

2. The node structure according to claim 1, characterized in that, The tenon (6) is either dovetail-shaped or T-shaped.

3. The node structure according to claim 1, characterized in that, The first horizontal bar (5) and the second horizontal bar (7) are rectangular structures.

Images