Connection Structure and Method of Inclined Steel-Concrete Composite Column and Reinforced Concrete Beam

Abstract

This invention provides a connection structure and method for inclined steel-concrete composite columns and reinforced concrete beams, comprising: a steel-concrete composite column with a connecting plate; a reinforced concrete beam inclined to the steel-concrete composite column; multiple haunches located on the side of the beam; and a connecting member including several additional reinforcing bars, and at least one set of first and second reinforcing bars arranged in a cross configuration. The two ends of each additional reinforcing bar are fixed to the crossbeam and / or the longitudinal beam, and its middle portion passes through the corresponding haunch. The first and second reinforcing bars are located on the crossbeam and / or the longitudinal beam. The first reinforcing bar is used for welding to the connecting plate, and the second reinforcing bar is used for insertion into the steel-concrete composite column. This invention solves the technical problem in the prior art where, when a steel-concrete composite column and a reinforced concrete beam are inclined and reinforcing bars intersect, one reinforcing bar cannot be welded, resulting in poor structural stability.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to the connection structure and method of inclined steel-concrete composite columns and reinforced concrete beams. Background Technology

[0002] Irregular structures can easily lead to beam reinforcement not being able to be anchored into the steel-concrete composite column, especially at the column joint where the beams are obliquely intersecting, which can cause great construction difficulties; that is, when the steel connecting plate is not directly opposite the beam, the beam reinforcement in two directions will cross at the same position of the connecting plate, resulting in one reinforcement that cannot be welded, and the mechanical properties of the connection cannot be guaranteed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a connection structure and method for inclined steel-concrete composite columns and reinforced concrete beams. This solves the technical problem in existing technologies where, when steel-concrete composite columns and reinforced concrete beams are inclined and their reinforcing bars intersect, one reinforcing bar cannot be welded, resulting in poor structural stability.

[0004] According to an embodiment of the present invention, the connection structure between the inclined steel-concrete composite column and the reinforced concrete beam includes:

[0005] Steel-concrete composite column, equipped with connecting plates;

[0006] A reinforced concrete beam includes a horizontal beam and a longitudinal beam extending in the transverse and longitudinal directions respectively. The horizontal beam and the longitudinal beam are connected, and an installation point is formed at the connection point for fixing the connecting plate. The steel-concrete column is set at an angle relative to the installation point, and the included angle is defined as α, where α satisfies 0°<α<180° and α≠90°.

[0007] Multiple armhole areas are respectively located at the corners formed between the crossbeam and the longitudinal beam; and

[0008] The connecting member includes several additional reinforcing bars, and at least one set of first and second reinforcing bars arranged in a cross pattern. The two ends of the additional reinforcing bars are fixed to the crossbeam and / or the longitudinal beam, and the middle part passes through the corresponding haunch area. The first and second reinforcing bars are provided on the crossbeam and / or the longitudinal beam. The first reinforcing bar is used to be welded to the connecting plate, and the second reinforcing bar is used to be inserted into the steel-concrete composite column.

[0009] Preferably, the armhole area includes a first straight segment and a second straight segment that abut against the side of the crossbeam and the side of the longitudinal beam, respectively, and an inclined segment connecting the first straight segment and the second straight segment. A pouring cavity is formed between the first straight segment, the second straight segment and the inclined segment for pouring concrete.

[0010] Preferably, the inclined section has a notch positioned away from the casting cavity.

[0011] Preferably, the length of the first straight segment is 6 times the length of the second straight segment.

[0012] Preferably, the additional reinforcing bars include a first clearance section and a second clearance section arranged in a mirror image, and a connecting section connecting the first clearance section and the second clearance section. The first clearance section and the second clearance section are both inclined, and their proximal ends extend into the casting cavity. The connecting section is parallel to the crossbeam or the longitudinal beam.

[0013] Preferably, the length of the first clearance section and / or the second clearance section extending outside the casting cavity is l, where l ≥ 900 mm.

[0014] Preferably, the first reinforcing bar is parallel to the crossbeam or the longitudinal beam.

[0015] Preferably, the second reinforcing bar is parallel to the crossbeam or the longitudinal beam.

[0016] Preferably, the steel-concrete column is fitted with steel profiles, and the connecting plate is arranged around the steel profiles.

[0017] On the other hand, according to embodiments of the present invention, a method for connecting inclined steel-concrete composite columns and reinforced concrete beams is also provided, employing the connection structure described above. The method includes the following steps:

[0018] S1. Determine the angle between the steel-concrete composite column and the reinforced concrete beam, and construct the steel-concrete composite column and the reinforced concrete beam.

[0019] S2. Weld the first reinforcing bar to the connecting plate using double-sided welding;

[0020] S3. Insert the second reinforcing bar, which intersects with the first reinforcing bar, into the steel-concrete column;

[0021] S4. Add haunches at the corners formed between the crossbeams and longitudinal beams to create multiple haunch areas;

[0022] S5. Additional reinforcing bars are inserted into the corresponding haunch area and pass around the corresponding second reinforcing bar;

[0023] S6. After acceptance, pour concrete.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. A reinforced concrete beam includes connected horizontal beams and vertical beams. The connection between the horizontal beams and vertical beams forms an installation point for connecting steel-concrete columns via a connecting plate. The center of the connecting plate (and the steel-concrete column) coincides with the center of the installation point, and the connecting plate (and the steel-concrete column) rotates around the center of the installation point by a certain angle, so that an angle is formed between the two to cope with irregular structures.

[0026] 2. When an angle is formed between the steel-concrete column and the reinforced concrete beam, the first reinforcing bar of the reinforced concrete beam can be welded to the connecting plate. However, the second reinforcing bar on the beam can be inserted into the steel-concrete column without being welded to the connecting plate because there is an intersection point with the first reinforcing bar. In addition, multiple haunches are formed at various corners between the crossbeams and longitudinal beams, which are used to allow additional reinforcing bars to bypass the second reinforcing bars and pass through the corresponding haunches. Their two ends are welded to the reinforced concrete beam, which can effectively solve the problem of steel beam-column joint connection and speed up the construction.

[0027] 3. The mechanical properties of the connection are ensured by welding the connecting plates and adding haunches, making the structure safe and reliable. The haunches are only added at the beam intersections and do not affect subsequent processes such as installation and decoration, making it highly adaptable. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the connection structure in one embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram of a steel-concrete composite column and a reinforced concrete beam in one embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the additional reinforcing bars in one embodiment of the present invention.

[0031] In the picture:

[0032] 1. Steel-concrete composite column; 2. Connecting plate; 3. Horizontal beam; 4. Longitudinal beam; 5. Haunch area; 501. First straight section; 502. Second straight section; 503. Inclined section; 504. Casting cavity; 505. Notch; 6. Additional reinforcement; 601. First clearance section; 602. Second clearance section; 603. Connecting section; 7. First reinforcement; 8. Second reinforcement. Detailed Implementation

[0033] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] The following will be combined with the appendix Figure 1-3 The present invention will be further described below.

[0035] like Figure 1 , Figure 2 As shown, in one embodiment of the present invention, the connection structure between the inclined steel-concrete column and the reinforced concrete beam includes a steel-concrete column 1, a reinforced concrete beam, multiple haunch zones 5, and connecting members; the steel-concrete column 1 is provided with a connecting plate 2; the reinforced concrete beam includes a transverse beam 3 and a longitudinal beam 4 extending in the transverse and longitudinal directions respectively, the transverse beam 3 and the longitudinal beam 4 are connected, and an installation point is formed at the connection point for fixing the connecting plate 2; the steel-concrete column 1 is set at an angle relative to the installation point, the included angle being defined as α, where α satisfies 0°<α<180° and α≠ 90°; multiple haunch areas 5, respectively located at the corners formed between the crossbeam 3 and the longitudinal beam 4; the connecting member includes several additional reinforcing bars 6, and at least one set of first reinforcing bars 7 and second reinforcing bars 8 arranged in a cross pattern, the two ends of the additional reinforcing bars 6 are fixed to the crossbeam 3 and / or the longitudinal beam 4, and the middle part passes through the corresponding haunch area 5, the first reinforcing bar 7 and the second reinforcing bar 8 are located on the crossbeam 3 and / or the longitudinal beam 4, the first reinforcing bar 7 is used to weld to the connecting plate 2, and the second reinforcing bar 8 is used to insert into the steel-concrete column 1.

[0036] Specifically, in this embodiment of the invention, the steel-concrete column 1 includes a steel section and a concrete section. The steel section is added inside the concrete column to increase the load-bearing capacity of the concrete column. A connecting plate 2 is fixed at the end of the steel-concrete column 1 for connecting to a reinforced concrete beam.

[0037] In this embodiment of the invention, the reinforced concrete beam includes a horizontal beam 3 and a longitudinal beam 4 extending horizontally and longitudinally. The horizontal beam 3 and the longitudinal beam 4 are connected to form a cross structure, and their connection portion defines an installation point for connecting the steel-concrete column 1 via a connecting plate 2. The center point of the installation point coincides with the center point of the connecting plate 2 and the steel-concrete column 1. When the building structure is irregular, during construction, while ensuring that the two center points coincide, the steel-concrete column 1 is installed by rotating it around this center point by a certain angle to conform to the preset position of the building structure, thereby creating an angle between the steel-concrete column 1 and the reinforced concrete beam. Of course, depending on the shape and position of the building structure, the steel-concrete column 1 can be configured with a rectangular or triangular cross-section, etc., depending on the actual situation.

[0038] In this embodiment of the invention, since the crossbeam 3 and the longitudinal beam 4 are constructed in a cross shape, four corners can be formed between them to provide armhole areas 5, thereby increasing the width of the crossbeam 3 and the longitudinal beam 4.

[0039] In this embodiment of the invention, the connecting member includes a first reinforcing bar 7, a second reinforcing bar 8, and an additional reinforcing bar 6. Multiple first reinforcing bars 7 are configured and placed on the crossbeam 3 and the longitudinal beam 4, extending along the length of the corresponding crossbeam 3 or longitudinal beam 4. Similarly, multiple second reinforcing bars 8 are configured and placed on the crossbeam 3 and the longitudinal beam 4, extending along the length of the corresponding crossbeam 3 or longitudinal beam 4. Because the steel-concrete composite column 1 is angled, the first reinforcing bars 7 and the second reinforcing bars 8 will intersect in two directions (lateral and longitudinal), causing one reinforcing bar to be welded to the connecting plate 2 while the other cannot be welded to the connecting plate 2. (Due to the obstruction of the steel section within the steel-concrete column 1), the first reinforcing bar 7 is defined as a reinforcing bar that can be directly welded to the connecting plate 2, and the second reinforcing bar 8 is defined as a reinforcing bar that cannot be directly welded to the connecting plate 2. During construction, the first reinforcing bar 7 is welded to the connecting plate 2 by double-sided welding, and the second reinforcing bar 8 is installed inside the steel-concrete column 1 as much as possible. Furthermore, in order to ensure the mechanical performance of the connection of this structure, additional reinforcing bars 6 are provided on both the horizontal beam 3 and the longitudinal beam 4. Both ends of the additional reinforcing bars 6 are welded to the horizontal beam 3 or the longitudinal beam 4, and the middle part bypasses the second reinforcing bar 8 and passes through the corresponding haunch area 5 to make the structure safe and reliable.

[0040] This invention ensures the mechanical properties of the connection by welding the connecting plate 2 and adding a haunch, making the structure safe and reliable. The haunch area 5 is located at the beam intersection, which basically does not affect subsequent processes such as installation and decoration, and has strong adaptability. The additional steel bars 6 have a small bending angle, are few in number, and are easy to construct, which helps to speed up the construction progress.

[0041] like Figure 2As shown, in one embodiment, the armhole area 5 includes a first straight segment 501 and a second straight segment 502 that respectively abut against the side of the crossbeam 3 and the side of the longitudinal beam 4, and an inclined segment 503 connecting the first straight segment 501 and the second straight segment. A pouring cavity 504 is formed between the first straight segment 501, the second straight segment 502 and the inclined segment 503 for pouring concrete. Specifically, in order to reduce the size of the haunch area 5 and save on material consumption, this embodiment divides the haunch area 5 into three parts: a first straight segment 501 and a second straight segment 502 that respectively abut against the side of the crossbeam 3 and the side of the longitudinal beam 4, and an inclined segment 503 connecting the first straight segment 501 and the second straight segment 502. The three parts form a triangular structure, which defines a pouring cavity 504 for pouring concrete so that the additional reinforcing bars 6 can be inserted into the pouring cavity 504. At the same time, the first straight segment 501 and the second straight segment 502 are set by the crossbeam 3 and the longitudinal beam 4, which not only reduces the pouring surface, but also improves the stability of the haunch area 5 and makes it easier for the additional reinforcing bars 6 to extend into it.

[0042] Preferably, the inclined section 503 is formed with a notch 505 in a direction opposite to that of the casting cavity 504. This notch 505 can reduce material consumption and does not hinder subsequent foundation installation or equipment.

[0043] Preferably, the length of the first straight segment 501 is 6 times the length of the second straight segment 502, and the width of the armhole area 5 is sufficient to allow the additional reinforcing bar 6 to pass through. Of course, the reinforcing bars that cannot be welded due to being blocked by the steel section (i.e., the second reinforcing bar 8) are bypassed by the additional reinforcing bars 6 in the armhole areas 5 on both sides, the stirrups in the armhole area 5 are widened, and the spacing between the stirrup legs in the same cross section is not greater than 200 mm.

[0044] like Figure 3As shown, in one embodiment, the additional reinforcing bar 6 includes a first clearance segment 601 and a second clearance segment 602 arranged in a mirror image, and a connecting segment 603 connecting the first clearance segment 601 and the second clearance segment 602. Both the first clearance segment 601 and the second clearance segment 602 are inclined, and their proximal ends extend into the casting cavity 504. The connecting segment 603 is parallel to the crossbeam 3 or the longitudinal beam 4. Specifically, in order to allow the additional reinforcing bar 6 to bypass the second reinforcing bar 8, this embodiment divides the additional reinforcing bar 6 into three parts: a first clearance segment 601 and a second clearance segment 602 arranged in a mirror image, and a connecting segment 603 connecting the first clearance segment 601 and the second clearance segment 602. The first clearance segment 601 and the second clearance segment 602 are inclined, thus forming a V-shaped structure between the first clearance segment 601 and the second clearance segment 602, which is used to bypass the steel section and the second reinforcing bar 8 of the steel-concrete column 1 and extend into the haunch area 5; In addition, the first avoidance section 601 and the second avoidance section 602 are welded to the horizontal beam 3 or the longitudinal beam 4, so that the connecting section 603 can be parallel to the corresponding horizontal beam 3 or longitudinal beam 4. The additional steel bar 6 has a small bending angle, a small number, is easy to construct, and helps to speed up the construction progress. It solves the problem that the beam steel bars cannot be anchored into the steel-concrete column 1. In particular, it addresses the problem that the beam is oblique at the column joint, which makes the construction difficult. The additional steel bar 6 in the haunch area 5 can ensure the effective anchorage of the beam, ensure the structural mechanical performance, is simple to operate, occupies little space, and avoids affecting the building function.

[0045] Furthermore, the first avoidance section 601 and / or the second avoidance section 602 extend out of the casting cavity 504 by a length of l, where l ≥ 900 mm, to bypass the second reinforcing bar 8 and form a stable anchoring structure.

[0046] like Figure 1 As shown, in one embodiment, the first reinforcing bar 7 is parallel to the crossbeam 3 or the longitudinal beam 4; specifically, in order to construct a crossbeam 3 or a longitudinal beam 4 with multiple first reinforcing bars 7, a portion of the first reinforcing bars 7 are arranged parallel to the crossbeam 3, and another portion of the first reinforcing bars 7 are arranged parallel to the longitudinal beam 4; similarly, the second reinforcing bar 8 is parallel to the crossbeam 3 or the longitudinal beam 4.

[0047] like Figure 2As shown, in one embodiment, steel profiles are inserted into the steel-concrete column 1, and the connecting plate 2 is arranged around the steel profiles. Specifically, in order to improve the load-bearing capacity of the steel-concrete column 1, steel profiles are inserted into the steel-concrete column 1, and the connecting plate 2 is divided into four parts for surrounding the outer surface of the steel profiles and fixed to the steel profiles, so that the first reinforcing bars 7 in different directions can be welded to the connecting plate 2, and the second reinforcing bars 8 in different directions extend into the steel-concrete column 1, and the end of the second reinforcing bar 8 extending into the steel-concrete column 1 does not contact the steel profile, so as to avoid damaging the load-bearing capacity of the steel profile.

[0048] A method for connecting inclined steel-concrete composite columns and reinforced concrete beams, using the connection structure described above, includes the following steps:

[0049] S1. Determine the angle between the steel-concrete column 1 and the reinforced concrete beam, and construct the steel-concrete column 1 and the reinforced concrete beam;

[0050] S2. Weld the first reinforcing bar 7 to the connecting plate 2 by double-sided welding;

[0051] S3. Insert the second reinforcing bar 8, which intersects with the first reinforcing bar 7, into the steel-concrete column 1;

[0052] S4. Add armholes at the corner formed between the crossbeam 3 and the longitudinal beam 4 to form multiple armhole areas 5;

[0053] S5, the additional reinforcing bar 6 is inserted into the corresponding haunch area 5 and passes around the corresponding second reinforcing bar 8;

[0054] S6. After acceptance, pour concrete.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A connection structure of a diagonally oriented steel reinforced concrete column and a reinforced concrete beam, characterized by, include: Steel-concrete composite column, equipped with connecting plates; A reinforced concrete beam includes a horizontal beam and a longitudinal beam extending in the transverse and longitudinal directions respectively. The horizontal beam and the longitudinal beam are connected, and an installation point is formed at the connection point for fixing the connecting plate. The steel-concrete column is set at an angle relative to the installation point, and the included angle is defined as α, where α satisfies 0°<α<180° and α≠90°. Multiple armhole areas are respectively located at the corners formed between the crossbeam and the longitudinal beam; as well as The connecting member includes several additional reinforcing bars, and at least one set of first and second reinforcing bars arranged in a cross pattern. The two ends of the additional reinforcing bars are fixed to the crossbeam and / or the longitudinal beam, and the middle part passes through the corresponding haunch area. The first and second reinforcing bars are provided on the crossbeam and / or the longitudinal beam. The first reinforcing bar is used to be welded to the connecting plate, and the second reinforcing bar is used to be inserted into the steel-concrete composite column.

2. The connection structure between the inclined steel-concrete column and the reinforced concrete beam according to claim 1, characterized in that, The armhole area includes a first straight segment and a second straight segment that abut against the side of the crossbeam and the side of the longitudinal beam, respectively, and an inclined segment connecting the first straight segment and the second straight segment. A pouring cavity is formed between the first straight segment, the second straight segment and the inclined segment for pouring concrete.

3. The connection structure between the inclined steel-concrete composite column and the reinforced concrete beam according to claim 2, characterized in that, The inclined section has a notch positioned away from the direction of the casting cavity.

4. The connection structure between the inclined steel-concrete composite column and the reinforced concrete beam according to claim 2 or 3, characterized in that, The length of the first straight line segment is 6 times the length of the second straight line segment.

5. The connection structure between the inclined steel-concrete column and the reinforced concrete beam according to claim 2 or 3, characterized in that, The additional reinforcing bars include a first clearance section and a second clearance section arranged in a mirror image, and a connecting section connecting the first clearance section and the second clearance section. Both the first clearance section and the second clearance section are inclined, and their proximal ends extend into the casting cavity. The connecting section is parallel to the crossbeam or the longitudinal beam.

6. The connection structure between the inclined steel-concrete composite column and the reinforced concrete beam according to claim 5, characterized in that, The length of the first clearance section and / or the second clearance section extending outside the casting cavity is l, where l ≥ 900 mm.

7. The connection structure between the inclined steel-concrete column and the reinforced concrete beam according to claim 1, characterized in that, The first reinforcing bar is parallel to the crossbeam or the longitudinal beam.

8. The connection structure between the inclined steel-concrete column and the reinforced concrete beam according to claim 1 or 7, characterized in that, The second reinforcing bar is parallel to the crossbeam or the longitudinal beam.

9. The connection structure between the inclined steel-concrete column and the reinforced concrete beam according to claim 1, characterized in that, The steel-concrete column is fitted with steel sections, and the connecting plate is arranged around the steel sections.

10. A method for connecting inclined steel-concrete composite columns and reinforced concrete beams, characterized in that, Employing the connection structure as described in any one of claims 1-9, the method includes the following steps: S1. Determine the angle between the steel-concrete composite column and the reinforced concrete beam, and construct the steel-concrete composite column and the reinforced concrete beam. S2. Weld the first reinforcing bar to the connecting plate using double-sided welding; S3. Insert the second reinforcing bar, which intersects with the first reinforcing bar, into the steel-concrete column; S4. Add haunches at the corners formed between the crossbeams and longitudinal beams to create multiple haunch areas; S5. Additional reinforcing bars are inserted into the corresponding haunch area and bypass the corresponding second reinforcing bar; S6. After acceptance, pour concrete.

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