A high-strength steel structure joint connecting device

Abstract

The utility model discloses a kind of high-strength steel structure node connecting device, including middle connecting piece and the end connecting piece of symmetrical setting in its both sides.The upper portion and lower portion of end connecting piece butt joint fixed groove are all composed of a pair of opening opposite U-shaped channel steel, spacing constitutes web fixed groove, U-shaped channel steel is provided with bolt hole.Middle connecting piece can be integrally or in pieces, and the fixed plate of split type is divided into left and right plate bodies, connected by upper end plate and lower end plate, two ends can also be connected by wave-shaped steel plate, and the upper portion and lower portion butt joint fixed groove correspond U-shaped channel steel by X-shaped steel plate connection.The utility model improves the connecting strength, stability and anti-seismic performance, is convenient for processing installation, and has strong applicability.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure connection technology, specifically a high-strength steel structure node connection device. Background Technology

[0002] In construction engineering, steel structures are widely used due to their advantages such as high strength, light weight, and short construction period. As a critical component of the steel structure system, the connection strength and stability of steel structure nodes directly affect the safety and reliability of the entire steel structure. Existing steel structure node connection devices have some shortcomings in use. For example, the structural design of some connection devices is not reasonable enough, resulting in insufficient connection strength, which can easily lead to loosening and breakage when subjected to large loads; the installation process of some connection devices is relatively complicated, requiring a lot of time and manpower; and some connection devices have poor seismic performance, which can easily be damaged under the action of natural disasters such as earthquakes, affecting the service life of the entire steel structure. Therefore, there is an urgent need to design a high-strength, easy-to-install, and seismically resistant steel structure node connection device to solve the problems existing in the current technology. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a high-strength steel structure node connection device that improves connection strength and stability.

[0004] The technical solution of this utility model is as follows: a high-strength steel structure node connection device, comprising a central connector and end connectors symmetrically arranged on both sides of the central connector. The end connectors include an upper mating fixing groove and a lower mating fixing groove. The upper and lower mating fixing grooves have the same structure, each including a pair of U-shaped channel steels with their openings facing each other. The distance between the two U-shaped channel steels forms a web fixing groove, and bolt holes are provided on the U-shaped channel steels. This design allows the end connectors to fix the web of the steel structure through the web fixing grooves, while the U-shaped channel steels fix the flanges of the steel structure. The bolt holes facilitate connection with other components via bolts, thereby achieving a reliable connection between the end connectors and the steel structure. Furthermore, the central connector includes a fixing plate on which end connectors are mounted. The fixing plate is connected to the upper and lower end plates. This structural design allows the central connector to connect the end connectors on both sides into a single unit, improving the stability and strength of the entire connection device. As a preferred embodiment of this utility model, the central connector is a split structure, with the fixing plate divided into a left plate and a right plate. A pair of U-shaped channel steels are respectively fixed to the left and right plates. The tops of the left and right plates are connected by an upper end plate, and the bottoms are connected by a lower end plate. The split structure design facilitates the processing and installation of the central connector, and also allows for adjustment of the dimensions of the left and right plates according to actual needs, thus improving the applicability of the connecting device. Furthermore, the left and right plates at both ends of the central connector are connected by corrugated steel plates. The corrugated steel plates increase the elastic deformation capacity of the central connector, allowing it to absorb more energy under the influence of natural disasters such as earthquakes, thus improving the seismic performance of the connection device. As another preferred embodiment of this invention, the U-shaped channel steels at corresponding positions of the upper and lower docking fixing grooves are connected by X-shaped steel plates. This X-shaped steel plate connection enhances the connection strength between the upper and lower docking fixing grooves and improves the stability of the entire end connector.

[0005] The beneficial effects of this utility model are as follows: This utility model, by setting a middle connector and an end connector, uses the upper and lower docking fixing grooves of the end connector to fix the web of the steel structure through U-shaped channel steel and web fixing groove, and the bolt holes facilitate connection; the structural design of the middle connector, whether integral or split, and the setting of corrugated steel plate and X-shaped steel plate, effectively improves the strength, stability and seismic performance of the connection device, while the split structure is easy to process and install, improving the applicability of the device. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a schematic diagram of the structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the end connector.

[0009] Figure 3 This is a schematic diagram of the structure of Example 2.

[0010] Figure 4 This is a schematic diagram of the structure of Example 3. Detailed Implementation

[0011] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0012] Example 1 refer to Figures 1-2This utility model provides a high-strength steel structure node connection device, which includes a central connector 1 and end connectors 2 symmetrically arranged on both sides of the central connector 1.

[0013] The end connector 2 adopts a modular symmetrical design concept, consisting of an upper docking fixing groove 21 and a lower docking fixing groove 22, which are completely identical in structural parameters and processing technology. Each docking fixing groove is composed of a pair of specially made U-shaped channel steels with their opening directions mirror-oriented. This design not only facilitates rapid positioning of the components but also enhances connection stability through simultaneous pressure from both sides. The precisely controlled spacing between the two U-shaped channel steels forms a standardized web fixing groove 23.

[0014] The U-shaped channel steel is hot-dip galvanized to enhance its weather resistance. Four sets of M20 high-strength bolt holes are evenly distributed longitudinally along its sidewalls, with hole position accuracy controlled within ±0.5mm. During actual installation, the flange plates of the steel structure are first embedded into the U-shaped channel, while the web plates are embedded into the web plate fixing grooves 23.

[0015] High-strength bolts are then passed through the bolt holes in sequence, along with matching nuts and disc spring washers, to form a surface contact constraint between the U-shaped channel steel and the steel structure flange plate, effectively ensuring the mechanical performance of the steel structure node under complex load conditions.

[0016] The central connector 1 adopts an integral structural design, consisting of a fixed plate 11, an upper end plate 12, and a lower end plate 13 forming a stable I-beam frame. The fixed plate 11, as the core load-bearing component, has an array of high-precision positioning holes on its surface for rigid connection to the end connector 2 via high-strength bolts. The upper end plate 12 and lower end plate 13 are vertically connected to the fixed plate 11 via full penetration welding, forming a closed cavity structure that significantly improves overall torsional stiffness. This structural design is formed by standardized die stamping, resulting in a simple and efficient manufacturing process with dimensional tolerances controllable within ±0.5mm. The integral connector 1 eliminates the need for on-site splicing during installation, effectively reducing high-altitude work and improving construction safety and efficiency.

[0017] Example 2 like Figure 3 As shown, in this embodiment, when the central connector 1 adopts a split structure design, its core component, the fixing plate 11, is innovatively divided into a left plate and a right plate. To ensure structural strength and stability, a pair of U-shaped channel steels are fixed to the outer sides of the left and right plates respectively through a full welding process, with a weld width of not less than 8mm and passing ultrasonic flaw detection. The tops of the left and right plates are connected by an upper end plate 12 made of 15mm thick Q355B steel plate, and the bottoms are connected by a lower end plate 13 of the same material and 20mm thick. Triangular reinforcing ribs are provided between the upper and lower end plates and the plates to enhance overall rigidity.

[0018] In the actual installation process, a step-by-step assembly process is adopted: First, high-strength bolts are used to pre-tighten the left and right plates to the end connectors 2, respectively. The bolt specifications are M24, and the pre-tightening force is controlled at 225-250kN. After positioning and calibration, the upper end plate 12 and the lower end plate 13 are finally fixed to the plates through welding, forming a stable closed frame structure. To improve the seismic performance of the connection device, the left and right plates are flexibly connected at both ends of the middle connector 1 using corrugated steel plates 14. The corrugated steel plates 14 are made of Q235B low-alloy high-strength steel, with a crest height of 30mm and a wavelength of 80mm. Their special sinusoidal curve shape gives them unique mechanical properties. When the structure is subjected to dynamic loads such as earthquakes or strong winds, the corrugated steel plates can absorb energy through elastic deformation, effectively improving the overall ductility and seismic resistance of the steel structure.

[0019] Example 3 like Figure 4 As shown, in this embodiment, the U-shaped channel steels at corresponding positions of the upper and lower connecting fixing grooves 21 and 22 are connected by an X-shaped steel plate 15. This steel plate is made of high-strength alloy steel, laser-cut, and then hot-dip galvanized to effectively improve corrosion resistance. The four branches of the X-shaped steel plate 15 are staggered and double-row fastened to the U-shaped channel steel using high-strength bolts. This unique X-shaped structural design forms a bidirectional triangular stable support system mechanically. Compared to traditional straight-line connection methods, it effectively disperses tensile and shear stresses at the nodes, connecting the U-shaped channel steels of the upper and lower connecting fixing grooves 21 and 22 into a more stable structure, significantly improving the load-bearing capacity and seismic performance of the steel structure nodes.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A high strength steel structural joint connection device, characterized by: The middle connector (1) and the end connectors (2) are symmetrically arranged on both sides of the middle connector (1); the end connectors (2) include an upper docking fixing groove (21) and a lower docking fixing groove (22); the upper docking fixing groove (21) and the lower docking fixing groove (22) have the same structure, including a pair of U-shaped channel steels; the openings of the U-shaped channel steels are opposite to each other; the distance between the two U-shaped channel steels forms a web fixing groove (23); bolt holes are provided on the U-shaped channel steels.

2. A high strength steel structural joint connection device according to claim 1, characterized in that: The middle connector (1) includes a fixing plate (11); an end connector (2) is installed on the fixing plate (11); the fixing plate (11) is connected by connecting an upper end plate (12) and a lower end plate (13).

3. The high-strength steel structural joint connecting device according to claim 1, characterized in that: The middle connector (1) is a split structure, and the fixing plate (11) is divided into a left plate and a right plate; a pair of U-shaped channel steels are fixed on the left plate and the right plate respectively; the top of the left plate and the right plate are connected by an upper end plate (12), and the bottom is connected by a lower end plate (13).

4. A high strength steel structural node connection device according to claim 3, characterized in that: The left and right plates at both ends of the middle connector (1) are connected by corrugated steel plates (14).

5. The high-strength steel structural joint connecting device according to claim 1, wherein: The U-shaped channel steels at corresponding positions of the upper docking fixing groove (21) and the lower docking fixing groove (22) are connected by X-shaped steel plates (15).

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