U-shaped steel composite beam-concrete filled steel tubular column suspension type connecting joint
Through the U-shaped steel composite beam-steel pipe concrete column suspension connection node, the end plate anchoring and tic-tick-shaped connectors are used to transmit force, solving the problems of high difficulty and difficult quality in traditional welding connection methods, and achieving efficient and stable node connections.
Patent Information
- Application Number
- CN202420610136.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-27
AI Technical Summary
When U-shaped steel concrete composite beams are connected to columns, the traditional welding connection method leads to large welding workload, high difficulty, and difficult to guarantee the quality of the welds. The welds in the cold bend area become brittle, resulting in reduced node bearing capacity and ductility.
U-shaped steel composite beam-steel pipe concrete column hanging connection node is adopted, and the end plate of the U-shaped steel beam is anchored into the steel pipe concrete inside, and the force is transmitted using tic-shaped connectors to avoid welding in the cold-bending area, reduce the number of welds, and enhance the integrity of the nodes.
It realizes efficient connection between U-shaped steel beams and steel pipe concrete columns, reduces welding difficulty and workload, improves weld quality, enhances the bearing capacity and ductility of nodes, and improves assembly efficiency and construction period.
Smart Images
Figure CN222575758U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction, in particular to a U-shaped steel composite beam-steel tube concrete column suspension connection node. Background Art
[0002] U-shaped steel-concrete composite beams are increasingly used in practical projects because they give full play to the tensile properties of steel and the compressive properties of concrete, and have the advantages of high bearing capacity, high rigidity, good ductility and good fire resistance. In order to improve the economy, U-shaped steel is mass-produced using a standardized production mode of cold-bending thin steel plates. When this U-shaped steel-concrete 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, the workload of on-site welding is very large. At the same time, due to the coexistence of overhead welding, vertical welding and flat welding, the welding difficulty is high and the quality of the weld is difficult to guarantee. In addition, the cold-bent U-shaped steel has cold-bending zone welding, which makes the weld brittle, resulting in reduced node bearing capacity and ductility, thus affecting the promotion and use of U-shaped steel beams. 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 suspended connection node to solve the problems in the prior art of large on-site welding workload, high welding difficulty, difficulty in ensuring weld quality, brittle welds in cold bending areas, and reduced node bearing capacity and ductility.
[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 suspension connection node, comprising an upper column, a lower column and a plurality of U-shaped steel beams; the lower end of the upper column is fixedly connected to the top end of the lower column, and the U-shaped steel beams are distributed at intervals along the circumference of the lower column;
[0006] Among them, an end plate is provided at one end of the U-shaped steel beam, and the end plate is fixedly connected to the U-shaped steel beam; a groove is provided at the top end of the lower column, and the groove extends downward from the top end of the lower column; one end of the U-shaped steel beam passes through the groove and extends into the lower column, and the end plate on the U-shaped steel beam is located in the lower column, so that the U-shaped steel beam is connected to the lower column by clamping the groove through the end plate; a lower partition is also provided in the lower column and below the U-shaped steel beam, and the lower partition is fixedly connected to the inner side wall of the lower column; an opening is provided on the lower partition, and the opening passes through the two side walls of the lower partition that are opposite to each other, and the lower end of the end plate can pass through the lower partition through the opening; a connecting member is also provided in the lower column and above the U-shaped steel beam, and the connecting member is in a tic-tac-toe shape, and the ends of the connecting member on opposite sides are located above the U-shaped steel beams on opposite sides in the lower column, and are fixedly connected to the top of the U-shaped steel beam.
[0007] Preferably, a plurality of stiffening ribs are provided in the lower column section and between adjacent side walls. The stiffening ribs are spaced apart along the length direction of the lower column section, and adjacent sides of the stiffening ribs are fixedly connected to adjacent inner side walls of the lower column section respectively.
[0008] Preferably, an upper partition is further provided at the top end of the lower column, and the lower side surface of the upper partition is fixedly connected to the top end of the lower column.
[0009] Preferably, the lower side wall of the edge of the upper partition is recessed upward to form a connecting portion, and the upper partition is placed above the top end of the lower column through the connecting portion; and the upper column is sleeved on the outer side of the upper partition, and the inner side wall of the upper column is fixedly connected to the upper partition.
[0010] Preferably, a through hole is opened in the middle of the upper partition, and the through hole passes through two sides of the upper partition facing away from each other.
[0011] Preferably, a plurality of armpit plates are provided below the U-shaped steel beam, wherein the armpit plates are located between the U-shaped steel beam and the end plate, and the adjacent two side edges thereof are respectively fixedly connected to the lower side wall of the U-shaped beam and the side wall of the end plate facing the U-shaped beam; the armpit plates are spaced apart along the width direction of the U-shaped steel beam.
[0012] Preferably, when the lower column and the upper column are both thin-walled steel pipe columns, the lower column is composed of a lower thin-walled steel pipe column and a strengthened column, the groove is arranged at the top of the strengthened column, and the upper end of the strengthened column is fixedly connected to the lower end of the upper column, and the lower end thereof is fixedly connected to the upper end of the lower thin-walled steel pipe column; one end of the U-shaped steel beam is placed in the groove so that the lower end of the end plate can pass through the opening on the lower partition.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] 1. The utility model adjusts the connection structure between the U-shaped steel beam and the steel pipe column, so that there is no need to weld between the U-shaped steel beam and the steel pipe column, and the lower end of the U-shaped steel beam end plate can be directly anchored into the concrete inside the steel pipe concrete, and the upper flange transmits force through the well-shaped connector to achieve connection with the steel pipe concrete column. This connection method avoids welding in the cold bending area of the U-shaped steel beam, reduces the number of welds, and makes it easy to ensure the quality of the welds. The problems of reduced connection bearing capacity and poor ductility are solved; and the grooves on the reinforced steel pipe column are used to place 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 greatly shortens the construction period.
[0015] 2. The utility model provides a plurality of stiffening ribs between adjacent side walls in the lower column, which enhances the integrity of the open steel pipe, improves the restraining effect of the steel pipe on the concrete in the node area, and improves the bearing capacity and ductility of the node. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a structural schematic diagram of a U-shaped steel composite beam-steel tube concrete column suspension connection node.
[0017] Figure 2 for Figure 1 Schematic diagram of the structure after the A part is enlarged.
[0018] Figure 3 It is a structural schematic diagram of the connecting member above the U-shaped steel beam.
[0019] Figure 4 This is a structural schematic diagram when the lower column consists of a lower thin-walled steel pipe column and a strengthened column.
[0020] Figure 5 This is a schematic diagram of the structure of the lower partition in the lower column.
[0021] In the figure: upper column 1, lower column 2, U-shaped steel beam 3, end plate 4, slot 5, lower partition 6, opening 7, connecting member 8, stiffening rib 9, upper partition 10, connecting part 11, haunch plate at beam end 12, strengthening column 13, lower thin-walled steel pipe column 14. DETAILED DESCRIPTION
[0022] 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.
[0023] The utility model provides a U-shaped steel composite beam-steel tube concrete column suspension connection node, such as Figures 1 to 5As shown, it includes an upper column 1, a lower column 2 and a plurality of U-shaped steel beams 3. The lower end of the upper column is fixedly connected to the top end of the lower column, and the U-shaped steel beams are distributed at intervals along the circumference of the lower column. Among them, one end of the U-shaped steel beam is provided with an end plate 4, and the end plate is fixedly connected to the U-shaped steel beam. A slot 5 is provided at the top end of the lower column, and the slot extends downward from the top end of the lower column. One end of the U-shaped steel beam passes through the slot and extends into the lower column. The end plate on the U-shaped steel beam is located in the lower column, so that the U-shaped steel beam is connected to the lower column by clamping the slot through the end plate. The U-shaped steel beam can be fixed to the lower column by welding, but the two can also be fixed without welding. After the concrete is poured in the lower column, the solidified concrete is anchored in the lower column through the end plate on the U-shaped steel beam, thereby ensuring the connection strength between the U-shaped steel beam and the lower column. Therefore, before pouring concrete, there is no need to perform welding and fixing operations between the lower column and the U-shaped steel beam. It is only necessary to set up a supporting structure under the U-shaped steel beam to support the U-shaped steel beam. After the concrete pouring and solidification, the fixed connection between the U-shaped steel beam and the lower column is completed. A lower partition 6 is also provided in the lower column and below the U-shaped steel beam. The lower partition is fixedly connected to the inner wall of the lower column. An opening 7 is provided on the lower partition. The opening passes through the two side walls of the lower partition that are away from each other. The lower end of the end plate can pass through the lower partition through the opening. At the same time, the lower column is also connected through the opening, which is convenient for pouring concrete. A connecting member 8 is also provided in the lower column and above the U-shaped steel beam. The connecting member is in a well shape, and the ends of the connecting member on opposite sides are located above the U-shaped steel beams on opposite sides of the lower column and are fixedly connected to the top of the U-shaped steel beam.
[0024] In the specific implementation, the edges of the top ends of the two side walls of the U-shaped steel beam are bent inward to form the upper flange. The connecting member 8 can be in various forms, for example, it can be in the form of a connecting plate, such as Figure 3As shown, four connecting plates are assembled into a tic-tac-toe shape for use, or a tic-tac-toe-shaped connecting plate can be cut out from a complete steel plate for use. The connecting plate can be welded and fixed to the upper flange of the U-shaped steel beam. Similarly, the connecting member can also be a connecting steel bar. After a plurality of steel bars are bundled into a tic-tac-toe shape, they are placed in the slot of the lower column and above the U-shaped steel beam. After pouring concrete, the connecting steel bar can be anchored above the upper flange of the U-shaped steel beam through the concrete, so that the connecting steel bar can achieve the force transmission effect between the U-shaped steel beams located on the opposite sides. Another very important point is that the utility model also takes into account the application of thin-walled steel pipe columns. The cross-sectional size of ordinary rectangular or square steel pipe concrete columns should not be less than 400 mm, the thickness of the steel pipe should not be less than 8 mm, and the ratio of the width of the steel pipe to the thickness should not be greater than the limit value of 60×(235 / fak)0.5, where fak is the standard value of the tensile strength of the steel pipe. 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 the limit and the steel content is between 4% and 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 will become more serious, and the advantages of the thin-walled steel pipe column cannot be brought into play, and it is difficult to ensure the strength of the node. Therefore, in the specific implementation of the utility model, when the lower column and the upper column are both thin-walled steel pipe columns, the lower column is composed of two parts, namely: a lower thin-walled steel pipe column and a strengthening column 13, such as Figure 4 As shown in the figure, the slot is set at the top of the strengthening column, and the upper end of the strengthening column is fixedly connected to the lower end of the upper column, and the lower end is fixedly connected to the upper end of the lower thin-walled steel pipe column. The strengthening column plays the role of connecting the upper column and the lower thin-walled steel pipe column. At the same time, the U-shaped steel beam is connected to the strengthening column through the end plate at its end. The rest of the specific structure is the same as Figure 1 At the same time, the thickness of the wall of the strengthening column also needs to be adjusted accordingly. The strengthening column will be weakened due to the slotting, and the thickness of the steel pipe in 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 is 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 y2The width, thickness and material yield strength of the remaining steel plate on one side of the strengthening column are increased. 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] In some embodiments, a plurality of stiffening ribs 9 are provided in the lower column and between the adjacent two side walls. Figure 4 As shown, the stiffening ribs are spaced apart along the length direction of the lower column, and the adjacent two sides of the stiffening ribs are fixedly connected to the adjacent two inner side walls of the lower column. The stiffening ribs are arranged inside the lower column to support the side walls on both sides of the slot and improve the stability of the slot of the lower column.
[0026] In some embodiments, an upper partition 10 is further provided at the top of the lower column. Figure 1 and Figure 2 As shown, the lower side of the upper partition is fixedly connected to the top of the lower column. The lower side wall of the edge of the upper partition is recessed upward to form a connecting portion 11, and the upper partition is placed above the top of the lower column through the connecting portion 11; and the upper column is sleeved on the outside of the upper partition, and the inner wall of the upper column is fixedly connected to the upper partition. Placing the upper partition on the top of the lower column can not only play an installation and positioning role for the upper partition through the connecting portion, but also enhance the bearing capacity of the connection between the upper column and the lower column, and improve the firmness of the node. A through hole is opened in the middle of the upper partition, and the through hole passes through the upper partition on both sides away from each other, so that when pouring concrete, the concrete can flow into the lower part of the lower column through the through hole.
[0027] In some embodiments, a plurality of beam end haunch plates 12 are further provided below the U-shaped steel beam, such as Figure 1 As shown, the axilla plates at the ends of the beams are located between the U-shaped steel beam and the end plate, and their adjacent two side edges are respectively fixedly connected to the lower side wall of the U-shaped beam and the side wall of the end plate facing the U-shaped beam; the axilla plates at the ends of the beams are spaced apart along the width direction of the U-shaped steel beam.
[0028] 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.
[0029] 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 suspension connection node, characterized in that: It comprises an upper column (1), a lower column (2) and a plurality of U-shaped steel beams (3); the lower end of the upper column is fixedly connected to the top end of the lower column, and the U-shaped steel beams are distributed at intervals along the circumference of the lower column; Wherein, an end plate (4) is provided at one end of the U-shaped steel beam, and the end plate is fixedly connected to the U-shaped steel beam; a slot (5) is provided at the top end of the lower column, and the slot extends downward from the top end of the lower column; one end of the U-shaped steel beam passes through the slot and extends into the lower column, and the end plate on the U-shaped steel beam is located in the lower column, so that the U-shaped steel beam is connected to the lower column by clamping the slot with the end plate; A lower partition (6) is also provided inside the lower column and below the U-shaped steel beam, and the lower partition is fixedly connected to the inner side wall of the lower column; an opening (7) is provided on the lower partition, and the opening passes through two side walls of the lower partition that are away from each other, and the lower end of the end plate can pass through the lower partition through the opening; A connecting member (8) is also provided in the lower column section and above the U-shaped steel beam. The connecting member is in a well shape, and ends of the connecting member on opposite sides are located above the U-shaped steel beams on opposite sides in the lower column section and are fixedly connected to the top of the U-shaped steel beam.
2. The U-shaped steel composite beam-steel tube concrete column suspension connection node according to claim 1 is characterized in that: A plurality of stiffening ribs (9) are also provided in the lower column section and between adjacent side walls. The stiffening ribs are spaced apart along the length direction of the lower column section, and adjacent sides of the stiffening ribs are respectively fixedly connected to adjacent inner side walls of the lower column section.
3. The U-shaped steel composite beam-steel tube concrete column suspension connection node according to claim 1 is characterized in that: An upper partition plate (10) is also provided at the top end of the lower column, and the lower side surface of the upper partition plate is fixedly connected to the top end of the lower column.
4. The U-shaped steel composite beam-steel tube concrete column suspension connection node according to claim 3 is characterized in that: The lower side wall of the edge of the upper partition is recessed upward to form a connecting portion (11), and the upper partition is placed above the top of the lower column through the connecting portion; the upper column is sleeved on the outer side of the upper partition, and the inner side wall of the upper column is fixedly connected to the upper partition.
5. The U-shaped steel composite beam-steel tube concrete column suspension connection node according to claim 3 is characterized in that: A through hole is provided in the middle of the upper partition plate, and the through hole penetrates through two sides of the upper partition plate which are away from each other.
6. The U-shaped steel composite beam-steel tube concrete column suspension connection node according to claim 1 is characterized in that: A plurality of beam end haunch plates (12) are also provided below the U-shaped steel beam. The beam end haunch plates are located between the U-shaped steel beam and the end plate, and their adjacent two side edges are respectively fixedly connected to the lower side wall of the U-shaped beam and the side wall of the end plate facing the U-shaped beam; the beam end haunch plates are distributed at intervals along the width direction of the U-shaped steel beam.
7. The U-shaped steel composite beam-concrete-filled steel tube column suspension connection node according to any one of claims 1 to 6, characterized in that: When both the lower column and the upper column are thin-walled steel pipe columns, the lower column is composed of a lower thin-walled steel pipe column (14) and a strengthening column (13), the groove is arranged at the top of the strengthening column, and the upper end of the strengthening column is fixedly connected to the lower end of the upper column, and the lower end of the strengthening column is fixedly connected to the upper end of the lower thin-walled steel pipe column; one end of the U-shaped steel beam is placed in the groove so that the lower end of the end plate can pass through the opening on the lower partition plate.