U-shaped steel composite beam-concrete filled steel tubular column angle steel reinforced connection node
By using L-shaped connectors and reinforcements in the connection between U-shaped steel composite beams and steel pipe concrete columns, the problems of high welding difficulties and low node bearing capacity are solved, and high-quality connections and improved construction efficiency are achieved.
Patent Information
- Application Number
- CN202420610141.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The connection between U-shaped steel composite beams and steel pipe concrete columns is difficult to weld at the construction site, the workload is large, and the quality of the weld is difficult to ensure, resulting in a reduction in the bearing capacity and ductility of the nodes.
The L-shaped connections of U-shaped steel beams are used to anchor the concrete inside the steel pipe column, and the installation positioning and welding of the L-shaped reinforcement are installed to reduce the number of welding, avoid welding in the cold-bending area, and placement grooves are opened at the upper end of the lower column to reduce the amount of welding.
The stable connection between the U-shaped steel beam and the steel pipe concrete column is achieved, the number of welds is reduced, the quality of welds is improved, the bearing capacity and ductility of the nodes is enhanced, and the construction efficiency is improved.
Smart Images
Figure CN222595172U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction, in particular to a node for strengthening connection of a U-shaped steel composite beam and a steel tube concrete column angle steel. Background Art
[0002] When the U-shaped steel composite beam is connected to the column, the beam-column node is the key to the structural force. Since the U-shaped steel is a semi-closed section, when this beam-column node is connected using traditional inner partitions, through partitions or outer ring plates, due to the simultaneous existence of overhead welding, vertical welding and flat welding processes, on-site welding is difficult, the welding workload is large, and the weld quality is difficult to guarantee. In addition, cold-bent U-shaped steel has cold-bending zone welding, which makes the weld brittle, resulting in reduced node bearing capacity and ductility. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection node to solve the problems of high welding difficulty, large welding workload, difficult to ensure weld quality, brittle welds in cold bending areas, and reduced node bearing capacity and ductility in the prior art.
[0004] To solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection node, comprising an upper column, a lower column and a plurality of U-shaped beams; wherein, one end of the U-shaped beam is provided with a connecting piece, the connecting piece is L-shaped and has two connecting sections, and the adjacent two inner side walls of the connecting piece are respectively fixedly connected to the two sides of one end of the U-shaped beam; a placement groove is provided at the top end of the lower column and at the position corresponding to the U-shaped beam, the placement groove extends downward from the top end of the lower column in a vertical direction, and the placement groove runs through the column wall of the lower column, one end of the U-shaped beam can be placed in the placement groove, so that the connecting piece is located inside the lower column; at the same time, the connecting piece The two ends are located on the inner sides of the two adjacent corners of the lower column and are respectively close to the inner side walls of the two adjacent corners of the lower column; the outer side walls of the two connecting sections of the connecting piece are respectively fixedly connected to the outer side walls of the connecting section of the connecting piece on the adjacent U-shaped beam, so that the U-shaped beam is distributed in a cross shape; a lower partition is also provided inside the lower column and below the U-shaped beam, the edge of the lower partition is fixedly connected to the inner side wall of the lower column, the lower end of the connecting piece extends to the top of the lower partition and abuts against the upper surface of the lower partition, and the upper end of the connecting piece is flush with the upper surface of the U-shaped beam; the lower end of the upper column is fixedly connected to the upper end of the lower column.
[0006] Preferably, an upper partition is provided inside the upper column and above the U-shaped beam, the edge of the upper partition is fixedly connected to the inner wall of the upper column, and an opening is provided in the middle of the upper partition for pouring concrete.
[0007] Preferably, a reinforcement is further provided between one end of the connecting member and the lower column, the reinforcement is L-shaped and has two reinforcement sections; the reinforcement is arranged along the length direction of the lower column, the upper end of the reinforcement extends to below the lower surface of the upper partition and abuts against the lower surface of the upper partition, the lower end of the reinforcement extends to above the upper surface of the lower partition and abuts against the upper surface of the lower partition; one end of the connecting member extends into the inner side of the reinforcement and is fixedly connected to the connection between the two reinforcement sections of the reinforcement.
[0008] Preferably, the upper end of the reinforcement extends from the top end of the lower column, so that the lower end of the upper column is sleeved on the outer side of the upper end of the reinforcement.
[0009] Preferably, the lower partition plate is provided with through holes for pouring concrete.
[0010] Preferably, there is a distance between the lower end of the upper column and the upper surface of the U-shaped beam.
[0011] Preferably, when the upper column and the lower column are both thin-walled steel tube concrete columns, the lower column consists of two parts: a reinforced column and a lower thin-walled steel tube column; the placement groove is provided on the reinforced column, and one end of the U-shaped beam is placed in the placement groove, so that the connecting piece on it is located in the reinforced column, and both ends of the connecting piece are located in the reinforced column and close to the inner side walls of two adjacent corners of the reinforced column; the lower end of the reinforced column is fixedly connected to the upper end of the lower thin-walled steel tube column.
[0012] Preferably, the lower partition is located inside the lower thin-walled steel pipe column, and its edge is fixedly connected to the inner wall of the lower thin-walled steel pipe column, so that the lower end of the connecting piece passes through the lower end of the reinforcement column and extends into the lower thin-walled steel pipe column, and extends to the upper surface of the lower partition and abuts against it.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] 1. The utility model can directly anchor the lower end of the L-shaped connector of the U-shaped steel beam into the concrete inside the steel tube concrete, weld the upper end of the L-shaped connector to transmit force, and fix the upper and lower steel tube columns by welding after they are installed and positioned through the L-shaped reinforcement. This connection method requires only a small amount of welding or no welding between the U-shaped steel beam and the steel tube column to achieve connection with the steel tube concrete column, avoids welding in the cold bending area of the U-shaped steel beam, reduces the number of welds, makes it easy to ensure the quality of the welds, and solves the problems of reduced connection bearing capacity and poor ductility; and, the upper end of the lower column is grooved for placing the U-shaped beam, and the installation allowable error is large. This structure greatly reduces the amount of on-site welding at the node, improves assembly efficiency, and shortens the construction period.
[0015] 2. The utility model provides a plurality of L-shaped reinforcements between the adjacent two side walls in the lower column, which enhances the integrity of the open steel pipe and improves the restraining effect of the steel pipe on the concrete in the node area, thereby improving the bearing capacity and ductility of the node. At the same time, the L-shaped reinforcement is anchored into the lower end of the upper column and abuts against the upper partition, which facilitates installation and positioning and transfers the vertical load of the upper column. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic diagram of a node structure of a U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection.
[0017] Figure 2 It is a schematic diagram of the structure after the connecting piece is connected to the U-shaped beam.
[0018] Figure 3 This is a schematic diagram of the structure in which the reinforcement is set in the lower column before being assembled with the upper column.
[0019] Figure 4 It is a schematic diagram of the structure after the connecting piece is connected to the U-shaped beam and before assembly.
[0020] In the figure: upper column 1, lower column 2, U-shaped beam 3, connecting piece 4, placement groove 5, lower partition 6, upper partition 7, reinforcement piece 8. DETAILED DESCRIPTION
[0021] The present invention will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the present invention belong to the scope of protection of the present invention.
[0022] The utility model provides a U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection node, such as Figures 1 to 4As shown, it includes an upper column 1, a lower column 2 and a plurality of U-shaped beams 3. Here, the upper column and the lower column can be conventional steel pipe columns of any model. Among them, one end of the U-shaped beam is provided with a connector 4, the connector is L-shaped and has two connecting sections, and the adjacent two inner walls of the connector are fixedly connected to the two sides of one end of the U-shaped beam. In actual implementation, the connector can be made of angle steel, and one end of the U-shaped beam can be made into a shape that fits the inner wall of the connector and fixed thereto, or it can be directly fixedly connected to the inner wall of the connector. The former connection method can directly transfer the internal force of the upper flange of the U-shaped beam to the L-shaped connector, and the force transmission is direct, but the internal space is small and it is not convenient to pour concrete; the latter connection method can transfer the internal force of the upper flange of the U-shaped beam to the L-shaped connector through the web of the U-shaped beam. Compared with the former, the force transmission is not direct enough, but it is convenient to pour concrete. Both methods can be selected according to actual conditions, and neither of these two methods will affect the overall structural effect. A placement groove 5 is provided at the top of the lower column and at the position corresponding to the U-shaped beam. The placement groove extends downward from the top of the lower column in the vertical direction, and the placement groove runs through the column wall of the lower column. One end of the U-shaped beam passes through the placement groove, so that the U-shaped beam can be placed in the placement groove, and the connecting piece is located inside the lower column. At the same time, the two ends of the connecting piece are located on the inner side of the two adjacent corners of the lower column, and extend to the inner side walls close to the two adjacent corners of the lower column respectively, so that there is a certain gap between the two ends of the connecting piece and the inner side ends of the two adjacent corners of the lower column. The outer side walls of the two connecting sections of the connecting piece are respectively fixedly connected to the outer side walls of one connecting section of the connecting piece on the two adjacent U-shaped beams, that is, the outer side wall of one connecting section of the connecting piece is fixedly connected to the outer side wall of the connecting section of the connecting piece adjacent to it, so that one end of the four U-shaped beams can be spliced and assembled together inside the lower column, which can make the U-shaped beams distributed in a cross shape, and the connection between the four U-shaped beams can be located inside the lower column, such as Figure 4 As shown, after pouring concrete, the concrete can play an anchoring and strengthening role for the connection between the four U-shaped beams. A lower partition 6 is also provided inside the lower column and below the U-shaped beam. The edges around the lower partition are fixedly connected to the inner side wall of the lower column. The lower end of the connector 4 extends to the top of the lower partition and abuts against the upper surface of the lower partition, and the upper end of the connector is flush with the upper surface of the U-shaped beam. The lower end of the upper column is fixedly connected to the upper end of the lower column. In this way, a certain space is formed between the connection between the connector and the U-shaped beam and the lower end of the upper column, which can be used for the steel bars above the U-shaped beam to pass through. The lower partition 6 can enhance the external force of the lower column, enhance the constraint of the steel pipe on the concrete, and can transfer part of the vertical load of the U-shaped beam to the lower column through the lower partition 6, thereby enhancing the force transmission at the lower end of the connector 4. The upper end of the connector is flush with the U-shaped beam, which can facilitate the floor slab steel bars to pass through the column, thereby improving the construction efficiency.
[0023] In the specific implementation, an upper partition 7 is provided inside the upper column and above the U-shaped beam. Figure 3As shown, the edge of the upper partition is fixedly connected to the inner wall of the upper column, and an opening is opened in the middle of the upper partition, which runs through the two sides of the entire upper partition that are away from each other and can be used for pouring concrete. A reinforcement member 8 is also provided between one end of the connecting member and the lower column. The reinforcement member is L-shaped and has two reinforcement sections. In actual construction, angle steel can be used as the reinforcement member. Specifically, the reinforcement member 8 is located on the inner side of a corner of the lower column, and the outer side wall of the reinforcement member 8 fits with the inner side wall of a corner of the lower column. The reinforcement member is arranged in the length direction of the lower column, the upper end of the reinforcement member extends to the lower side surface of the upper partition and abuts against the lower side surface of the upper partition, and the lower end of the reinforcement member extends to the upper side surface of the lower partition and abuts against the upper side surface of the lower partition. The reinforcement member strengthens the integrity of the slotted upper column and lower column and enhances the force-bearing performance of the node. One end of the connector 4 extends into the inner side of the reinforcement 8 and is fixedly connected to the connection between the two reinforcement sections of the reinforcement, so that the two ends of the connector can abut against the inner side of the reinforcement, strengthening the lower column from the inside. The upper end of the reinforcement extends from the top of the lower column, so that the lower end of the upper column is sleeved on the outer side of the upper end of the reinforcement, which is convenient for on-site installation and positioning. The reinforcement 8 abuts against the lower partition 6 and the upper partition 7, and can directly transfer part of the vertical load of the upper column to the lower column, thereby enhancing the vertical force transmission. The lower partition is provided with a through hole for pouring concrete. There is a spacing between the lower end of the upper column and the upper surface of the U-shaped beam, and the spacing can allow the steel bars on the floor slab to pass through.
[0024] In some embodiments, the present invention also considers the application of thin-walled steel tube columns. In the prior art, the cross-sectional size of ordinary rectangular or square steel tube concrete columns should not be less than 400 mm, the thickness of the steel tube should not be less than 8 mm, and the ratio of the width to the thickness of the steel tube should not be greater than the limit of 60×(235 / f ak )0.5, where f akis the standard value of steel pipe tensile strength. The thin-walled steel pipe column here refers to a steel pipe concrete column in which the ratio of the steel pipe width to the thickness in the column exceeds this limit and the steel content is 4% to 5%. This thin-walled steel pipe column has a good application prospect due to its low steel consumption, but it is found in the actual construction process that when this steel pipe column is connected to the column node using the existing U-shaped steel concrete composite beam, the adverse effect of excessive welding on it will become more serious, and it is difficult to play the advantages of thin-walled steel pipe columns and ensure the strength of the node. This implementation is improved on the basis of the above implementation. When the upper column and the lower column are both thin-walled steel pipe concrete columns, the lower column is improved, and the lower column is changed to consist of two parts: a strengthening column and a lower thin-walled steel pipe column. In the above implementation, the structure set at the top of the lower column is all set on the strengthening column, and only the lower partition is set in the lower column. The top of the slotted strengthening column is connected to the lower end of the upper column, and the lower end of the strengthening column is connected to the top of the lower column. The specific implementation is as follows: the placement groove is set on the strengthening column, and one end of the U-shaped beam is placed in the placement groove, so that the connecting piece on it is located in the strengthening column, and the two ends of the connecting piece are located in the strengthening column and close to the inner side walls of the two adjacent corners of the strengthening column. At the same time, the two ends of the connecting piece are located on the inner side of the two adjacent corners of the strengthening column, and are respectively close to the inner side walls of the two adjacent corners of the strengthening column, so that there is a gap between the two ends of the connecting piece and the inner side ends of the two adjacent corners of the strengthening column. The outer side walls of the two connecting sections of the connecting piece are respectively fixedly connected to the outer side walls of one connecting section of the connecting piece on the two adjacent U-shaped beams, so that one end of the four U-shaped beams can be spliced and assembled together, so that the U-shaped beams are distributed in a cross shape. Moreover, the reinforcement member 8 can be set in the strengthening column, and is also set on the inner side of one corner of the strengthening column, and the outer side wall of the reinforcement member 8 is in contact with the inner side wall of one corner of the strengthening column. The lower end of the strengthening column is fixedly connected to the upper end of the lower thin-walled steel pipe column. The lower partition is located inside the lower thin-walled steel pipe column, and its edge is fixedly connected to the inner wall of the lower thin-walled steel pipe column, so that the lower end of the connector passes through the lower end of the strengthening column and extends into the lower thin-walled steel pipe column, and extends to the upper surface of the lower partition to abut against it. At the same time, the thickness of the strengthening column wall also needs to be adjusted accordingly. The strengthening column will be weakened due to the opening of the slot, and the steel pipe thickness of the remaining part of the opening slot should be determined according to the equal strength requirements, and the wall thickness of the strengthening column should be greater than the wall thickness of the upper column and the lower thin-walled steel pipe column, that is, B 2 t 2 f y2 ≥ B 1 t 1 f y1 ,in B 1. t 1. f y1 are the width, thickness and material yield strength of the steel plate on one side of the lower thin-walled steel pipe column, B 2.t 2. f y2 The width, thickness and material yield strength of the remaining steel plate on one side of the strengthening column are respectively. In this way, the utility model can avoid the adverse effects of welding operation on the thin-walled steel pipe column, and ensure the stability and strength of the node while completing the connection.
[0025] The present invention is not limited to the above-mentioned implementation modes, and any structure that is the same or similar to the above-mentioned embodiments of the present invention is within the protection scope of the present invention.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.
Claims
1. A U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection node, characterized in that: It comprises an upper column (1), a lower column (2) and a plurality of U-shaped beams (3); Wherein, one end of the U-shaped beam is provided with a connecting piece (4), the connecting piece is L-shaped and has two connecting sections, and two adjacent inner side walls of the connecting piece are respectively fixedly connected to two sides of one end of the U-shaped beam; A placement groove (5) is provided at the top of the lower column and at a position corresponding to the U-shaped beam. The placement groove extends downward from the top of the lower column in a vertical direction and penetrates the column wall of the lower column. One end of the U-shaped beam can be placed in the placement groove, so that the connecting piece is located inside the lower column; at the same time, both ends of the connecting piece are located on the inner side of two adjacent corners of the lower column and extend to the inner side walls of the two adjacent corners of the lower column respectively; the outer side walls of the two connecting sections of the connecting piece are respectively fixedly connected to the outer side walls of the connecting section of the connecting piece on the adjacent U-shaped beam, so that the U-shaped beam is distributed in a cross shape; A lower partition (6) is also provided inside the lower column and below the U-shaped beam, the edge of the lower partition being fixedly connected to the inner wall of the lower column, the lower end of the connecting piece extending to the top of the lower partition and abutting against the upper surface of the lower partition, and the upper end of the connecting piece being flush with the upper surface of the U-shaped beam; the lower end of the upper column is fixedly connected to the upper end of the lower column.
2. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 1 is characterized in that: An upper partition (7) is provided inside the upper column and above the U-shaped beam, the edge of the upper partition is fixedly connected to the inner wall of the upper column, and an opening is provided in the middle of the upper partition for pouring concrete.
3. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 2 is characterized in that: A reinforcement member (8) is also provided between one end of the connecting member and the lower column, the reinforcement member is L-shaped and has two reinforcement sections; the reinforcement member is arranged along the length direction of the lower column, the upper end of the reinforcement member extends to below the lower surface of the upper partition and abuts against the lower surface of the upper partition, and the lower end of the reinforcement member extends to above the upper surface of the lower partition and abuts against the upper surface of the lower partition; one end of the connecting member extends into the inner side of the reinforcement member and is fixedly connected to the reinforcement member.
4. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 3 is characterized in that: The upper end of the reinforcing member extends out from the top end of the lower column, so that the lower end of the upper column is sleeved on the outer side of the upper end of the reinforcing member.
5. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 1 is characterized in that: The lower partition plate is provided with through holes for pouring concrete.
6. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 1 is characterized in that: There is a distance between the lower end of the upper column and the upper side surface of the U-shaped beam.
7. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 1 is characterized in that: When the upper column and the lower column are both thin-walled steel tube concrete columns, the lower column consists of a reinforced column and a lower thin-walled steel tube column; the placement groove is arranged on the reinforced column, and one end of the U-shaped beam is placed in the placement groove, so that the connecting piece on it is located in the reinforced column, and the two ends of the connecting piece are located in the reinforced column and close to the inner side walls of the two adjacent corners of the reinforced column; the lower end of the reinforced column is fixedly connected to the upper end of the lower thin-walled steel tube column.
8. The node of the U-shaped steel composite beam-steel tube concrete column angle steel reinforced connection according to claim 7 is characterized in that: The lower partition is located in the lower thin-walled steel pipe column, and its edge is fixedly connected to the inner wall of the lower thin-walled steel pipe column, so that the lower end of the connecting piece passes through the lower end of the reinforcement column and extends into the lower thin-walled steel pipe column, and extends to the upper surface of the lower partition and abuts against it.