Steel structure rocking column hinged joint structure with end plate pin shaft

Abstract

This invention discloses a steel structure rocker column hinge joint structure with end plate pins, comprising: a rocker column, wherein cavities are formed at both ends of the rocker column, and a shaft hole communicating with the cavity is formed on the end face of the rocker column, the shaft hole being arranged along the axial direction of the rocker column; a base plate, wherein the base plate has a front side and a back side opposite to each other, the front side being mounted on a foundation or beam, and a pin being connected to the back side of the base plate, the pin being movably inserted through the shaft hole, the end of the pin away from the base plate extending into the cavity and connected to a pressure plate, the pressure plate being movably disposed within the cavity; and a plurality of limiting members for restricting the horizontal lateral movement of the rocker column, mounted on the base plate, the plurality of limiting members being arranged along the circumferential direction of the pin, and a gap being formed between the limiting members and the circumferential side of the rocker column. This invention solves the problems of high welding stress, high assembly difficulty, easy wear, and easy misalignment of existing rocker column joints.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a steel structure rocker column hinge joint structure with end plate pin. Background Technology

[0002] In projects such as long-span portal frames and spatial steel structure roofs, sway columns are widely used as vertically hinged load-bearing members. Their core function is to bear only vertical axial forces and not resist horizontal lateral loads, thereby optimizing the internal forces of the frame beams and columns and reducing the amount of steel used in the structure. However, existing sway column joint connection technologies have many engineering pain points: 1. Traditional pin-shaft hinge joint: It is mostly adopted by directly welding the lug plate to the column end and passing the pin. The welding work is large and the on-site assembly accuracy is required. Moreover, there is no buffer limit structure. Under dynamic loads such as wind load and earthquake, the joint rotation is prone to rigid impact, which leads to pin wear and lug deformation. After long-term use, the rotation stiffness of the joint fails, affecting the structural stress safety. 2. Spherical hinge / support type hinge joint: Although it can achieve flexible rotation, the finished support is expensive and has a long processing cycle. Moreover, the support and column are mostly rigidly welded, making it difficult to disassemble and replace later. The components cannot be recycled. In addition, the support is large in size, which is not friendly to construction in narrow spaces. 3. End plate type hinged joint: Improper bolt arrangement can easily lead to insufficient rotational stiffness of the joint, or cause column end cracking due to stress concentration in the weld. In addition, most joints do not have anti-lateral displacement limiting structures, and the swaying column is prone to deviation during operation, which can damage the overall force system of the rigid frame. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a steel structure rocker column hinged joint structure with end plate pin is provided to solve the problems of high welding stress, high assembly difficulty, easy wear, and easy misalignment of existing rocker column joints.

[0004] To achieve the above objectives, a steel structure rocker column hinge joint structure with end plate pin is provided, comprising: A rocking column, wherein cavities are formed at both ends of the rocking column, and a shaft hole communicating with the cavity is formed on the end face of the rocking column, and the shaft hole is arranged along the axial direction of the rocking column; A substrate having a front side and a back side, the front side being mounted on a foundation or beam, the back side of the substrate being connected to a pin, the pin being movably inserted through a shaft hole, the end of the pin away from the substrate extending into the cavity and connected to a pressure plate, the pressure plate being movably disposed within the cavity. Multiple limiting members for limiting the horizontal lateral displacement of the rocker column are mounted on the base plate. The multiple limiting members are arranged along the circumferential direction of the pin shaft, and a gap is formed between the limiting members and the circumferential side of the rocker column.

[0005] Furthermore, it also includes the elastic washer, which is sleeved on the outside of the pin and placed between the base plate and the end face of the rocker column.

[0006] Furthermore, a keyway is provided on the end face, and an anti-shear key is formed on the back side of the substrate, the anti-shear key being movably inserted into the keyway.

[0007] Furthermore, the shaft hole is coaxially arranged with the rocker column.

[0008] Furthermore, the cavity is cylindrical and is coaxially arranged with the rocking column.

[0009] Furthermore, the pressure plate is disc-shaped, the outer diameter of the pressure plate is smaller than the inner diameter of the cavity, and the thickness of the pressure plate is smaller than the height of the cavity.

[0010] Furthermore, the cavity wall opposite the shaft hole is arc-shaped, and the disk surface of the pressure plate facing the cavity wall is arc-shaped, with the curvature of the disk surface of the pressure plate matching the curvature of the cavity wall.

[0011] Furthermore, the surface of the pressure plate abuts against the cavity wall.

[0012] Furthermore, the swaying column is a steel pipe column.

[0013] The beneficial effects of the present invention are that the steel structure rocking column hinge node structure with end plate and pin of the present invention forms a hinge constraint through the connection of the base plate, the pin and the rocking column end plate, which only transmits vertical axial force and does not transmit bending moment and horizontal shear force, thus meeting the stress requirement of the rocking column to "only bear pressure and not resist lateral force", optimizing the internal force distribution of the rigid frame and reducing the amount of steel used in the structure.

[0014] The steel structure rocker column hinge node structure with end plate pin of the present invention adopts the method of prefabricating and welding the pin and the base plate in the factory, and only needing to be connected and assembled on site. It eliminates the need for on-site welding operations, eliminates welding stress and welding quality hazards, and greatly improves construction efficiency. At the same time, the components are detachable and recyclable, reducing engineering costs and conforming to the concept of green building. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Fig. 1This is a schematic diagram of the hinged joint structure of a steel rocking column with end plate pin type according to an embodiment of the present invention.

[0016] Fig. 2 This is a schematic diagram of the lower end of the steel structure rocking column hinge node structure with end plate pin type according to an embodiment of the present invention.

[0017] Fig. 3 This is a schematic diagram of the structure of the rocking column according to an embodiment of the present invention.

[0018] Figure label: 1. Rocking column; 11. End plate; a. Cavity; b. Shaft hole; c. Cavity wall; Substrate 2, pin 21, bearing plate 22; Basic 3; Beam 4. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Reference Figs. 1 to 3 As shown, the present invention provides a steel structure rocker column hinge node structure with end plate pin, including: rocker column 1, base plate 2, and limiting member.

[0022] The rocker column 1 has cavities a at both ends. A shaft hole b is formed on the end face of the rocker column 1. The shaft hole b connects to the cavity a. The shaft hole b is positioned along the axial direction of the rocker column 1.

[0023] In this embodiment, the sway column 1 is a steel pipe column. End plates are installed at both ends of the steel pipe column. Shaft holes b are formed on the end plates. Partitions are installed inside both ends of the steel pipe column. A cavity a is formed between the partitions and the end plates.

[0024] In some embodiments, the sway column is a steel column with a cross-section such as square steel tube or H-beam.

[0025] The substrate 2 is circular. The substrate 2 has a front side and a back side facing each other.

[0026] The front side of base plate 2 is mounted on foundation 3 or beam 4. The front side of the upper base plate of the steel structure rocking column hinged joint structure with end plate pin of the present invention is mounted on the steel frame beam. The steel frame beam is an I-beam. The front side of the upper base plate of the steel structure rocking column hinged joint structure with end plate pin of the present invention is welded to the lower flange of the I-beam. The front side of the lower base plate of the steel structure rocking column hinged joint structure with end plate pin of the present invention is mounted on the column foundation. In this embodiment, a pre-embedded steel plate is embedded on the upper surface of the column foundation. The lower base plate of the steel structure rocking column hinged joint structure with end plate pin of the present invention is welded to the pre-embedded steel plate.

[0027] A pin 21 is connected to the back of the substrate 2. The pin 21 is movably inserted through the shaft hole b. The end of the pin 21 away from the substrate 2 extends into the cavity a. A pressure plate 22 is connected to the end of the pin 21 away from the substrate 2. The pressure plate 22 is movably disposed within the cavity a.

[0028] The pin and the base plate are welded with full penetration welds. The joint is a modular prefabricated structure. Only the pin needs to be assembled on site, and no welding is required.

[0029] There are multiple limiting members. The limiting members are mounted on the base plate 2. The multiple limiting members are arranged along the circumferential direction of the pin 21. A gap is formed between the limiting members and the circumferential side of the rocker column 1. The multiple limiting members are used to limit the horizontal lateral movement of the rocker column 1.

[0030] The steel structure rocker column hinge joint structure with end plate pin of the present invention also includes an elastic washer. The elastic washer is sleeved on the outside of the pin 21. The elastic washer is placed between the base plate 2 and the end face of the rocker column 1.

[0031] The elastic washer is a rubber washer. The elastic washer reduces or offsets the rigid impact during node rotation. A keyway is formed on the end face of the rocker column. A shear key is formed on the back side of the substrate 2. The shear key is movably inserted into the keyway. The fit between the shear key and the keyway on the end face of the rocker column is used to transmit the horizontal shear force at the node and prevent the pin bearing from being subjected to shear force.

[0032] In this embodiment, the shaft hole b is coaxially arranged with the rocker column 1. The cavity a is cylindrical. The cavity a is coaxially arranged with the rocker column 1.

[0033] The pressure plate 22 is disc-shaped. The outer diameter of the pressure plate 22 is smaller than the inner diameter of the cavity a. The thickness of the pressure plate 22 is smaller than the height of the cavity a.

[0034] The outer diameter of the bearing plate is larger than the inner diameter of the shaft hole to prevent the pin from slipping.

[0035] In a preferred embodiment, the cavity a at both ends of the rocker column and the cavity wall c opposite to the shaft hole b are arc-shaped. The disk surface of the pressure plate 22 facing the cavity wall c is arc-shaped. The curvature of the disk surface of the pressure plate 22 matches the curvature of the cavity wall c. The disk surface of the pressure plate 22 abuts against the cavity wall c.

[0036] The swaying column uses round steel pipes (square steel pipes and H-beams are also suitable) as the main load-bearing component. The surface of the column is treated with anti-corrosion coating. Fig. 3 The image shows prefabricated rocking column components.

[0037] The end plate is made of thick steel plate (such as 20mm thick Q355B), round or rectangular, and is fully welded to the end of the rocker column. The weld joint is reinforced with weld feet, and a shaft hole is reserved in the center of the end plate.

[0038] The base plate is made of thick steel plate (e.g., 20mm thick Q355B), and is fully welded to the steel plate embedded in the lower flange / foundation of the rigid frame beam (factory prefabricated). The pin is set perpendicular to the base plate (coaxial setting). The diameter of the pin hole is clearance-fitted with the pin (clearance 2~3mm) to ensure flexible rotation of the node. The base plate and the end plate are arranged in parallel, and the pin passes through the two end plates to achieve hinge connection.

[0039] The limiting components are welded to the base plate and symmetrically arranged on both sides of the pin. The inner sides of multiple limiting components are fitted with the end plate with a clearance (5mm) to limit the horizontal lateral movement of the swing column, prevent node misalignment, and ensure that the swing column rotates only around the pin.

[0040] The working principle of the steel structure rocking column hinge node structure with end plate pin of the present invention: 1. Hinged Rotation Principle: The end of the rocker column is connected to the base plate through a pin, forming a hinge constraint. It only transmits vertical axial force and does not transmit bending moment and horizontal shear force, thus meeting the rocker column's stress requirement of "only bearing pressure and not resisting lateral forces". 2. Limiting and anti-deviation principle: The limiting component restricts the horizontal displacement of the end plate, ensuring that the sway column rotates only around the pin shaft, avoiding column deviation, and ensuring the rationality of the frame's stress. 4. Shear force separation principle: The shear key bears the horizontal shear force of the node, while the pin only bears the rotational constraint and vertical force, avoiding shear failure of the pin and improving the safety reserve of the node structure; 5. Modular assembly principle: The steel structure rocker column hinge node structure with end plate pin of the present invention is a prefabricated component in the factory. On site, only the pin is connected and the anti-detachment structure is installed to complete the assembly. No on-site welding is required, which greatly improves the construction efficiency. The component is detachable and recyclable.

[0041] The upper and lower nodes of the steel structure rocking column hinge node structure with end plate pin shaft of the present invention have the same node structure, and only the lower node can be added with a positioning pin for precise positioning during installation. The pin and end plate of the steel structure rocking column hinge node structure with end plate pin of the present invention are welded with full penetration weld, and non-destructive testing is performed after welding to ensure connection strength.

[0042] The steel structure rocker column hinge node structure with end plate pin of the present invention is processed, anti-corrosion and painted in the factory, and directly assembled on site, avoiding the hidden dangers of on-site welding quality. The steel structure rocker column hinged joint structure with end plate pin of the present invention adopts a modular prefabrication design, and all parts are prefabricated in the factory. On-site assembly only requires the pin to be threaded through, eliminating on-site welding, greatly improving construction efficiency and avoiding welding quality problems. The joint optimizes the force transmission path, with the shear key bearing the horizontal shear force and the pin only subject to vertical force and rotational constraints. With the addition of limiting components to prevent column displacement, the structure is safe and reliable.

[0043] An elastic washer is provided at the contact point between the base plate and the end face of the rocker column to reduce rigid collisions under dynamic loads, reduce wear, and improve durability.

[0044] The steel structure rocking column hinge node structure with end plate pin type of the present invention has pin connection of each component, which is convenient for disassembly and maintenance, and can be recycled, which is in line with the concept of green building.

[0045] The steel structure rocking column hinge node structure with end plate pin of the present invention has a simple overall structure and low processing cost. It can be adapted to rocking columns of different specifications such as round steel pipe, square steel pipe, and H-beam, and is widely applicable to engineering scenarios such as large-span portal frames and spatial steel structure roofs.

[0046] The steel structure rocking column hinge node structure with end plate and pin of the present invention forms a hinge constraint through the connection of the base plate, pin and rocking column end plate. It only transmits vertical axial force and does not transmit bending moment and horizontal shear force, which meets the stress requirement of rocking column "only bears pressure and does not resist lateral force", optimizes the internal force distribution of the rigid frame and reduces the amount of steel used in the structure.

[0047] The steel structure rocking column hinge node structure with end plate pin of the present invention, by setting multiple limiting members and leaving a gap between the limiting members and the circumferential side of the rocking column, allows the rocking column to rotate freely around the pin while effectively limiting its horizontal lateral displacement, preventing column deviation, ensuring the rationality of the overall force system of the rigid frame, and avoiding additional internal forces caused by deviation.

[0048] The steel structure rocker column hinged node structure with end plate pin of the present invention provides a shear-resistant key on the back of the base plate and it cooperates with the keyway on the end face of the rocker column to bear the horizontal shear force of the node, so that the pin only bears the vertical force and rotational constraint, avoids the pin failure due to shear, significantly improves the safety reserve of the node structure and extends the service life of the node.

[0049] The steel structure rocker column hinge node structure with end plate pin of the present invention adopts the method of prefabricating and welding the pin and the base plate in the factory, and only needing to be connected and assembled on site. It eliminates the need for on-site welding operations, eliminates welding stress and welding quality hazards, and greatly improves construction efficiency. At the same time, the components are detachable and recyclable, reducing engineering costs and conforming to the concept of green building.

[0050] The steel structure rocker column hinged joint structure with end plate pin of the present invention has an elastic washer between the base plate and the end face of the rocker column, which can reduce or offset the rigid collision of the joint under dynamic loads such as wind load and earthquake, reduce pin wear and end plate deformation, reduce the risk of rotational stiffness degradation, and ensure the stability and durability of the joint under long-term use.

[0051] The bearing plate and the inner wall of the cavity of the steel structure rocking column hinge node structure with end plate pin of the present invention adopt a matching arc surface design, so that the bearing plate and the cavity wall are well attached, dispersing local pressure and avoiding stress concentration; at the same time, the outer diameter of the bearing plate is smaller than the inner diameter of the cavity and the thickness is smaller than the height of the cavity, ensuring that the node rotates flexibly and does not fall out, and the structure has high reliability.

[0052] The steel structure rocking column hinge node structure with end plate pin of the present invention has a simple overall structure and low processing cost. It can be adapted to rocking columns with various cross-sectional forms such as round steel pipe, square steel pipe, and H-beam. It has strong versatility and is suitable for various engineering scenarios such as large-span portal frames and spatial steel structure roofs. It has good promotion value.

[0053] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A steel structure rocker column hinge joint structure with end plate pin, characterized in that, include: A rocking column, wherein cavities are formed at both ends of the rocking column, and a shaft hole communicating with the cavity is formed on the end face of the rocking column, and the shaft hole is arranged along the axial direction of the rocking column; A substrate having a front side and a back side, the front side being mounted on a foundation or beam, the back side of the substrate being connected to a pin, the pin being movably inserted through a shaft hole, the end of the pin away from the substrate extending into the cavity and connected to a pressure plate, the pressure plate being movably disposed within the cavity. Multiple limiting members for limiting the horizontal lateral displacement of the rocker column are mounted on the base plate. The multiple limiting members are arranged along the circumferential direction of the pin shaft, and a gap is formed between the limiting members and the circumferential side of the rocker column.

2. The steel structure rocker column hinge node structure with end plate pin as described in claim 1, characterized in that, It also includes the elastic washer, which is sleeved on the outside of the pin and placed between the base plate and the end face of the rocker column.

3. The steel structure rocking column hinged joint structure with end plate pin as described in claim 1, characterized in that, The end face is provided with a keyway, and the back side of the substrate is formed with an anti-shear key, which is movably inserted into the keyway.

4. The steel structure rocker column hinge node structure with end plate pin as described in claim 1, characterized in that, The shaft hole is coaxially arranged with the rocker column.

5. The steel structure rocker column hinged joint structure with end plate pin as described in claim 1, characterized in that, The cavity is cylindrical and is coaxially arranged with the rocking column.

6. The steel structure rocker column hinge node structure with end plate pin as described in claim 5, characterized in that, The pressure plate is disc-shaped, with its outer diameter being smaller than the inner diameter of the cavity, and its thickness being smaller than the height of the cavity.

7. The steel structure rocker column hinged joint structure with end plate pin as described in claim 6, characterized in that, The cavity wall opposite the shaft hole is arc-shaped, and the disk surface of the pressure plate facing the cavity wall is arc-shaped, with the curvature of the disk surface of the pressure plate matching the curvature of the cavity wall.

8. The steel structure rocker column hinge node structure with end plate pin as described in claim 7, characterized in that, The pressure plate abuts against the cavity wall.

9. The steel structure rocker column hinge node structure with end plate pin as described in claim 1, characterized in that, The rocking column is a steel pipe column.

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