Beam-column connection node structure of prefabricated concrete special-shaped column

Abstract

The utility model provides a beam-column connection node structure of a precast concrete special-shaped column, which comprises a beam connected between an upper column and a lower column, first profile steel is pre-embedded in the middle of the end part of the upper column, upper column bolts are pre-embedded on two sides of the upper column, lower column bolts are pre-embedded in the middle and on the outer side of the end part of the lower column, and second profile steel is arranged between two adjacent lower column bolts; the end of the first profile steel is connected with a lower column bolt in the middle of the end of the lower column through a nut. The end of the second profile steel is connected with an upper column bolt through a nut. Third section steel is embedded in the end of the beam and connected with a lower column bolt on the outer side of the end of the lower column through a nut. The column body and the beam of the structure are free of support during installation, the levelness of the beam can be adjusted, the anti-torsion effect can be achieved, and the perpendicularity of the column body can be adjusted, and the anti-shear effect can be achieved; and meanwhile, the connecting joint structure can improve the joint shock strength, the steel consumption is low, installation is easy, and economic benefits are remarkable.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated buildings, specifically to a beam-column connection node structure for precast concrete irregular columns. Background Technology

[0002] Conventional beam-column connection structures for irregularly shaped concrete columns use steel plates at the beam ends and steel plates at the top of the lower column, which are adjusted and fixed by bolts and nuts. In actual use, support rods are also needed at the lower end of the beam to adjust its level. However, this method cannot meet the torsional resistance requirements of the beam. Furthermore, due to the limitations of the concrete protective layer of the column, placing the beam on top of the concrete protective layer of the lower column can pose a safety hazard.

[0003] The column is supported and fixed by inserting an upper round tube or steel tube into a lower round tube or steel tube. The column is equipped with diagonal bracing to adjust verticality. The installation is complicated, the safety factor is low, and the joints are affected by the concrete curing period, which also leads to excessively long construction period and high labor costs. Utility Model Content

[0004] The main objective of this invention is to provide a beam-column connection structure for precast concrete irregular columns, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a beam connecting the upper column and the lower column is included, a first type of steel is pre-embedded in the middle of the end of the upper column, upper column bolts are pre-embedded on both sides, lower column bolts are pre-embedded in the middle and on the outer side of the end of the lower column, and a second type of steel is provided between two adjacent lower column bolts.

[0006] The end of the first type of steel is connected to the lower column bolt in the middle of the lower column end by a nut, and the end of the second type of steel is connected to the upper column bolt by a nut.

[0007] A third type of steel is pre-embedded at the end of the beam. The third type of steel is connected to the lower column bolt on the outside of the lower column end by a nut. The end of the third type of steel is welded and fixed to the second type of steel.

[0008] Preferably, the upper and lower columns are provided with pre-reserved protruding upper and lower column longitudinal bars at their ends. The corresponding upper and lower column longitudinal bars are connected by lap welding or by sleeve connection and fixed by binding stirrups.

[0009] Preferably, the ends of the first and second steel sections are fixed with connecting plates, and the upper and lower column bolts are respectively connected to the connecting plates by two nuts and leveled and fixed.

[0010] Preferably, the two nuts are located on both sides of the connecting plate.

[0011] Preferably, steel plates are pre-embedded at the roots of the upper and lower column bolts, and the first and second steel sections are welded and fixed to the corresponding steel plates.

[0012] Preferably, the first, second, and third steel sections are H-beams, I-beams, rectangular steel pipes, or channel steel.

[0013] Preferably, the beam ends are provided with pre-reserved protruding longitudinal reinforcement bars, the ends of which are bent and fixed by stirrups.

[0014] Preferably, the upper and lower columns are L-shaped, cross-shaped, or T-shaped.

[0015] This utility model provides a beam-column connection joint structure for precast concrete irregular-shaped columns, with the following advantages:

[0016] 1. By adjusting the steel profiles of the upper and lower columns and the bolts and nuts at the column ends, the horizontal and vertical alignment of the upper column can be adjusted, and the support-free effect can be achieved.

[0017] 2. The steel sections at the beam ends are bolted to the lower column. The level of the beam is adjusted by adjusting the nuts. At the same time, the steel sections at the beam ends are welded to the steel sections of the column, which also enables the beam to achieve torsional resistance.

[0018] 3. The steel sections installed on the upper and lower columns can serve both as supports and as shear resistance.

[0019] 4. This connection node structure can improve the seismic strength of the node, with low steel consumption, simple installation, and significant economic benefits.

[0020] 5. The irregular column frame structure is flush with the wall and will not protrude from the wall, affecting the aesthetics. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is an axonometric view of the overall structure of the L-shaped column of this utility model;

[0023] Figure 2 This is a utility model Figure 1 Exploded view;

[0024] Figure 3 This utility model relates to the connection structure between the upper and lower columns;

[0025] Figure 4 This is a schematic diagram of the cross-shaped column structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the T-shaped column structure of this utility model;

[0027] In the diagram: Upper column 1; Upper column longitudinal reinforcement 101; First type steel 102; Upper column bolt 103; Lower column 2; Lower column longitudinal reinforcement 201; Second type steel 202; Lower column bolt 203; Beam 3; Third type steel 301; Beam longitudinal reinforcement 302; Detailed Implementation

[0028] like Figures 1-5 As shown, a beam-column connection node structure for a precast concrete irregular column includes a beam 3 connecting the upper column 1 and the lower column 2. A first steel 102 is pre-embedded in the middle of the end of the upper column 1, and upper column bolts 103 are pre-embedded on both sides. Lower column bolts 203 are pre-embedded in the middle and outer sides of the end of the lower column 2, and a second steel 202 is provided between two adjacent lower column bolts 203.

[0029] The end of the first steel section 102 is connected to the lower column bolt 203 in the middle of the end of the lower column 2 by a nut, and the end of the second steel section 202 is connected to the upper column bolt 103 by a nut.

[0030] A third type of steel 301 is pre-embedded at the end of beam 3. The third type of steel 301 is connected to the lower column bolt 203 on the outer side of the end of the lower column 2 by a nut. The end of the third type of steel 301 is welded and fixed to the nearest second type of steel 202.

[0031] The first section steel 102 of the upper column is connected to the lower column bolt 203 via a nut, and the second section steel 202 of the lower column is connected to the upper column bolt 103 via a nut. The horizontal and vertical alignment of the upper column can be finely adjusted by adjusting the tightness of the nuts. The third section steel 301 at the beam end is connected to the lower column bolt 203 via a nut, and the horizontal position of the beam can also be adjusted using the nut.

[0032] The combination of steel sections and bolts provides sufficient rigid support, avoiding the need for additional support frames in traditional construction, thus saving construction time and costs.

[0033] Precast components are fabricated in the factory, and on-site assembly can be completed simply by bolting, significantly shortening the construction cycle. The bolted connections, adjusted with nuts, meet the structural precision requirements of modern construction. The support-free design reduces the use of on-site scaffolding and formwork, lowering material waste and construction energy consumption.

[0034] This beam-column connection joint construction is suitable for frame structures in prefabricated buildings, especially projects requiring rapid construction and high precision. It is particularly suitable for industrial plants, multi-story residential buildings, commercial complexes, and other buildings that require large-span beams and high-strength column connections.

[0035] Preferably, the upper column 1 and the lower column 2 are provided with pre-reserved protruding upper column longitudinal bars 101 and lower column longitudinal bars 201 at their ends. The corresponding upper column longitudinal bars 101 and lower column longitudinal bars 201 are connected by lap welding or by sleeve connection and fixed by binding stirrups.

[0036] Through lap welding or sleeve connections, a continuous force transmission path is formed between the upper and lower longitudinal reinforcement bars, effectively transferring axial force, bending moment, and shear force to ensure the overall performance of the structure. The binding of stirrups not only fixes the position of the longitudinal reinforcement bars but also enhances the shear resistance of the joint area, improving the seismic performance of the joint. Lap welding and sleeve connections can be flexibly selected according to on-site construction conditions: lap welding is suitable for scenarios requiring high-strength connections; sleeve connections are more suitable for projects with rapid construction and high quality control requirements.

[0037] Preferably, the ends of the first steel 102 and the second steel 202 are fixed with connecting plates, and the upper column bolt 103 and the lower column bolt 203 are respectively connected to the connecting plates by two nuts and leveled and fixed.

[0038] Two nuts are located on both sides of the connecting plate.

[0039] Steel plates are pre-embedded at the roots of the upper column bolt 103 and the lower column bolt 203, and the first steel 102 and the second steel 202 are welded and fixed to the corresponding steel plates.

[0040] Connecting plates are fixed to the ends of the first steel section 102 and the second steel section 202. These connecting plates have through holes for the upper column bolt 103 and the lower column bolt 203 to pass through. Each bolt is connected to the connecting plate by two nuts, which are respectively located on both sides of the connecting plate for easy adjustment and fixation. This method not only enhances the stability of the connection but also allows for fine-tuning of the verticality of the upper column 1.

[0041] Steel plates are pre-embedded at the roots of the upper column bolt 103 and the lower column bolt 203. These steel plates serve as a transition layer between the bolts and the concrete, improving the overall strength and durability of the connection point. The first steel section 102 and the second steel section 202 are welded to their corresponding pre-embedded steel plates. This welded connection method not only increases the robustness of the connection between the steel section and the bolts but also provides additional rigid support, helping to resist the effects of external loads and vibrations.

[0042] Preferably, the first type of steel 102, the second type of steel 202, and the third type of steel 301 are H-beams, or I-beams, or rectangular steel pipes, or channel steel. The choice of which type of steel to use depends on the specific project requirements, including but not limited to load requirements, design specifications, construction conditions, and cost considerations.

[0043] Preferably, the beam 3 has a pre-reserved protruding longitudinal reinforcement 302 at its end, and the end of the longitudinal reinforcement 302 is bent and tied to the longitudinal reinforcement and stirrups at the node.

[0044] The longitudinal reinforcement 302 at the end of beam 3 is closely connected with the longitudinal reinforcement and stirrups at the joint, forming a solid whole, which significantly enhances the safety and durability of the structure.

[0045] Preferably, as shown in 1, 4-5, the upper column 1 and lower column 2 are L-shaped, cross-shaped, or T-shaped. The steel sections and embedded bolts on the upper column 1 and lower column 2 are arranged reasonably according to the column structure type to ensure the stability of their joint connections. Through targeted design optimization of different types of column structures, the stability and reliability of precast concrete irregular column-beam-column joints can be effectively improved, meeting the application needs of various complex engineering environments.

[0046] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A beam-to-column connection joint configuration of a precast concrete shaped column, characterized by: The beam (3) is connected between the upper column (1) and the lower column (2), the first shaped steel (102) is embedded in the middle of the end of the upper column (1), the upper column bolts (103) are embedded on both sides, the lower column bolts (203) are embedded in the middle and the outer side of the end of the lower column (2), the second shaped steel (202) is arranged between the adjacent two lower column bolts (203); The end of the first shaped steel (102) is connected with the lower column bolt (203) in the middle of the end of the lower column (2) through a nut, the end of the second shaped steel (202) is connected with the upper column bolt (103) through a nut; The third shaped steel (301) is embedded in the end of the beam (3), the third shaped steel (301) is connected with the lower column bolt (203) on the outer side of the end of the lower column (2) through a nut, and the end of the third shaped steel (301) is welded and fixed with the second shaped steel (202).

2. The beam-to-column connection of precast concrete shaped column according to claim 1, characterized in that: The upper column (1) and the lower column (2) are provided with the reserved protruding upper column longitudinal reinforcement (101) and the lower column longitudinal reinforcement (201) at the end, the corresponding upper column longitudinal reinforcement (101) and the lower column longitudinal reinforcement (201) are connected through lap welding or sleeve connection, and are fixed through binding stirrups.

3. The precast concrete shaped column beam-column connection joint structure according to claim 1, characterized in that: The first shaped steel (102) and the second shaped steel (202) are provided with the connecting plate at the end, the upper column bolt (103) and the lower column bolt (203) are connected with the connecting plate through two nuts respectively and are fixed by leveling.

4. The precast concrete shaped column beam-column connection joint structure according to claim 3, characterized in that: The two nuts are arranged on both sides of the connecting plate respectively.

5. The precast concrete shaped column beam-column connection joint structure according to claim 3, characterized in that: The roots of the upper column bolt (103) and the lower column bolt (203) are embedded with the steel plate, the first shaped steel (102) and the second shaped steel (202) are welded and fixed with the corresponding steel plate.

6. The precast concrete shaped column beam-column connection construction according to claim 1, characterized in that: The first shaped steel (102), the second shaped steel (202) and the third shaped steel (301) are H-shaped steel, or I-shaped steel, or rectangular steel pipe, or channel steel.

7. The precast concrete shaped column beam-column connection construction according to claim 1, characterized in that: The beam (3) is provided with the reserved protruding beam longitudinal reinforcement (302) at the end, the end of the beam longitudinal reinforcement (302) is bent and is fixed through the binding stirrup.

8. The precast concrete shaped column beam-column connection construction according to claim 1, characterized in that: The upper column (1) and the lower column (2) are L-shaped, or cross-shaped, or T-shaped.

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