Joint of steel reinforced concrete column and reinforced concrete beam

Abstract

The utility model relates to the technical field of building structures, and discloses a node of a steel reinforced concrete column and a reinforced concrete beam, which comprises a longitudinal beam, a cross beam and a section steel column body with a built-in section steel body, the longitudinal beam, the cross beam and the section steel column body are perpendicular to each other and intersect at the node, and the longitudinal beam comprises a first longitudinal bar and a second longitudinal bar which are parallel to each other. The first longitudinal bars penetrate through the profile steel body in the full length direction, and the second longitudinal bars are connected to the two sides of the profile steel body through longitudinal sleeves. The cross beam comprises a first transverse longitudinal bar and a second transverse longitudinal bar, the second transverse longitudinal bar is connected with the profile steel body through a transverse sleeve, and the first transverse longitudinal bar is horizontally bent to the outer side of the profile steel body and is arranged in a full-length mode; the joint does not need a field welding process, the arrangement requirement of large-density multi-layer longitudinal bars can be met while the bearing capacity of the section steel can be guaranteed through the structure, internal force of the joint can be effectively transmitted into the section steel column, force transmission is clear, construction is easy and convenient, and the construction progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, and particularly relates to a joint between a steel reinforced concrete column and a reinforced concrete beam. Background Technique

[0002] At present, the design of new factories tends to have large spans and large spaces to meet the actual use function requirements. The traditional concrete frame structure is difficult to meet the requirements of low-density and small-section frame columns. The steel reinforced concrete structure has good seismic performance. The steel section and the outer concrete work together as a whole, and its performance is better than that of the concrete structure. Under the same design conditions, due to the configuration of the steel section, the bearing capacity of the components is greatly improved. While effectively controlling the size of the frame column section, the seismic performance of the structure is also improved.

[0003] In the steel reinforced concrete structure, the rationality of the connection between the steel section inside the steel reinforced concrete column and the beam member directly affects the effectiveness of the force transfer at the beam-column joint, and further affects the stiffness, stability and bearing capacity of the overall structure. At the same time, as the key and difficult points in the construction process, it also affects the on-site construction progress. At present, the existing joint connection methods mainly target the single-layer longitudinal reinforcement of the steel column and the beam, generally realized by welding with the outer ring plate or the bracket beam and the steel bars. There is no relatively mature and perfect joint for the connection of the multi-layer longitudinal reinforcement of the steel column and the two-way beam. If the existing conventional method is adopted, there is no welding space, it is difficult to ensure the welding quality, and the construction difficulty is large and the operability is not strong. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a joint between a steel reinforced concrete column and a reinforced concrete beam. This joint does not require on-site welding technology, solves the problem of the connection between the two-way multi-layer longitudinal reinforcement and the steel reinforced concrete, and the force transfer of the connection method of this joint is clear, the construction is convenient, the construction difficulty is reduced, and the construction period is shortened.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A joint between a steel reinforced concrete column and a reinforced concrete beam, including a longitudinal beam, a cross beam and a steel column body with a steel section body inside. The three are perpendicular to each other and intersect at the joint. The longitudinal beam includes a first longitudinal reinforcement and a second longitudinal reinforcement that are parallel to each other. The first longitudinal reinforcement passes through the steel section body throughout the length, and the second longitudinal reinforcement is connected to both sides of the steel section body through a longitudinal sleeve.

[0007] The cross beam includes a first transverse reinforcement and a second transverse reinforcement. The second transverse reinforcement is connected to the steel section body through a transverse sleeve, and the first transverse reinforcement is horizontally bent to the outside of the steel section body and arranged throughout the length.

[0008] Optionally, reinforcing bar passing holes for passing the first longitudinal reinforcing bars are also formed on the outer side of the profiled steel body, and the reinforcing bar passing holes and the longitudinal sleeves are arranged in an alternating pattern.

[0009] Optionally, there are two sets of the first longitudinal reinforcing bars, the second longitudinal reinforcing bars, the first transverse reinforcing bars and the second transverse reinforcing bars up and down, each set of the first longitudinal reinforcing bars, the second longitudinal reinforcing bars, the first transverse reinforcing bars and the second transverse reinforcing bars are arranged in multiple layers, and the first transverse reinforcing bars in the same set are arranged in a staggered manner between the first longitudinal reinforcing bars and the second longitudinal reinforcing bars.

[0010] Optionally, when passing through the longitudinal beam, the first transverse reinforcing bars located above are bent downward and pass through between two layers of longitudinal reinforcing bars, and the first transverse reinforcing bars located below are bent upward and pass through between the corresponding two layers of longitudinal reinforcing bars.

[0011] Optionally, the first transverse reinforcing bars are bent to the outside of the profiled steel body through a horizontal haunch structure, and the slope of the haunch structure is 1:6.

[0012] Optionally, the second longitudinal reinforcing bars and the longitudinal sleeves, and the second transverse reinforcing bars and the transverse sleeves are all connected by threads, and the longitudinal sleeves and the transverse sleeves are fixedly connected to the profiled steel body by welding.

[0013] Optionally, the passing rate of the full-length longitudinal reinforcing bars of the longitudinal beam and the cross beam is not less than 50%.

[0014] Optionally, the profiled steel body is made of square steel pipe.

[0015] A construction method for a connection node includes the following steps:

[0016] S1. Longitudinal sleeves and transverse sleeves are pre-welded on the profiled steel body, and reinforcing bar passing holes are reserved, so that the reinforcing bar passing holes and the longitudinal sleeves are arranged in an alternating pattern;

[0017] S2. Thread tapping treatment is carried out on the second longitudinal reinforcing bars and the second transverse reinforcing bars;

[0018] S3. Position the profiled steel body, and after positioning, thread-connect the second longitudinal reinforcing bars and the second transverse reinforcing bars with the longitudinal sleeves and the transverse sleeves respectively;

[0019] S4. Pass the first longitudinal reinforcing bars through the reinforcing bar passing holes, and arrange the first transverse reinforcing bars in a full-length manner on both sides of the profiled steel body after bending;

[0020] S5. Bind the aforesaid longitudinal reinforcing bars, and after binding, carry out pouring to form a profiled steel column, a longitudinal beam and a cross beam.

[0021] Beneficial effects

[0022] (1) The adoption of this joint structure does not require on-site welding technology. That is, the second longitudinal reinforcement bars and the second transverse reinforcement bars are respectively connected to the built-in profiled steel body through longitudinal sleeves and transverse sleeves. The first longitudinal reinforcement bars pass through the profiled steel body in full length, and the first transverse reinforcement bars are bent to both sides of the profiled steel body. Through this structure, while ensuring the bearing capacity of the profiled steel, the layout requirements of large-density multi-layer longitudinal reinforcement bars can be met, enabling the internal forces of the joint to be effectively transmitted into the profiled steel column body, with clear force transmission, simple construction, and accelerated construction progress.

[0023] (2) In the present utility model, by arranging the longitudinal reinforcement bars at intervals, not only can it ensure that the stirrups have a good restraint effect on the longitudinal reinforcement bars, enhancing the bearing capacity and ductility of the longitudinal beam, but also it can avoid the influence on the quality caused by excessive increase in the number of stirrup limbs, which affects the pouring of concrete in the core area of the joint. Moreover, arranging at intervals can more flexibly adjust the force distribution of the longitudinal reinforcement bars, making the structure more reasonable in force. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the longitudinal reinforcement bar group and the transverse reinforcement bar group of the present utility model;

[0026] Figure 3 is a schematic top view structural diagram of the present utility model;

[0027] Figure 4 is a schematic position structural diagram of the first transverse reinforcement bar and the longitudinal reinforcement bar group of the present utility model;

[0028] Among them, 1, profiled steel column body; 2, longitudinal beam; 21, first longitudinal reinforcement bar; 22, second longitudinal reinforcement bar; 23, longitudinal sleeve; 3, cross beam; 31, first transverse reinforcement bar; 32, second transverse reinforcement bar; 33, transverse sleeve; 4, profiled steel body; 5, haunch structure. Detailed Description of the Embodiment

[0029] Now, the present utility model will be further described in detail with reference to the drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0030] Embodiment 1

[0031] As Figures 1 - 4 shown, a joint of a profiled steel concrete column and a reinforced concrete beam includes a profiled steel column body 1, a longitudinal beam 2, and a cross beam 3, which are perpendicular to each other and intersect at the joint.

[0032] The steel column 1 is a steel reinforced concrete column, which is a composite member widely used in building structures. It includes an internal steel section body 4. The steel section body 4 is made of a square steel pipe, which can greatly improve the compressive, flexural and shear resistance of the column, be able to bear large loads, and is suitable for high-rise buildings and large-span structures; the longitudinal beam 2 and the cross beam 3 are both reinforced concrete beams, which are common and important members in building structures.

[0033] As described above, longitudinal sleeves 23 and reinforcing bar passing holes are arranged on both opposite sides of the outside of the steel section body 4. The reinforcing bar passing holes and the longitudinal sleeves 23 are arranged alternately, and transverse sleeves 33 are arranged on both sides of the outside of the steel section body 4 adjacent to the longitudinal sleeves 23; wherein, one end of each of the longitudinal sleeves 23 and the transverse sleeves 33 is fixedly connected to the steel section body 4 by welding, and the inner holes of the sleeves are threaded holes.

[0034] The longitudinal beam 2 includes multiple layers of parallel longitudinal reinforcing bars. Each layer of longitudinal reinforcing bars includes a first longitudinal reinforcing bar 21 and a second longitudinal reinforcing bar 22 that are parallel to each other; the cross beam 3 includes multiple layers of parallel transverse reinforcing bars. Each layer of transverse reinforcing bars includes a first transverse reinforcing bar 31 and a second transverse reinforcing bar 32.

[0035] Among them, the first longitudinal reinforcing bar 21 passes through the steel section body 4 through the reinforcing bar passing holes throughout the length, and the second longitudinal reinforcing bar 22 is connected to both sides of the steel section body 4 through the longitudinal sleeves 23; the first transverse reinforcing bar 31 is horizontally bent to be arranged throughout the length on the outside of the steel section body 4, and the second transverse reinforcing bar 32 is connected to the steel section body 4 through the transverse sleeves 33.

[0036] Furthermore, the longitudinal reinforcing bars and the transverse reinforcing bars can be divided into upper and lower groups to enhance the stability of the joint and the balance of force; each group of the first longitudinal reinforcing bar 21, the second longitudinal reinforcing bar 22, the first transverse reinforcing bar 31 and the second transverse reinforcing bar 32 are all provided with multiple layers, and the first transverse reinforcing bar 31 in the same group is arranged alternately with the first longitudinal reinforcing bar 21 and the second longitudinal reinforcing bar 22.

[0037] Specifically, the first transverse reinforcing bar 31 intersects with the longitudinal reinforcing bars at the bending position, that is, when passing through the longitudinal beam 2, the first transverse reinforcing bar 31 located above bends downward and passes through between two layers of longitudinal reinforcing bars, and the first transverse reinforcing bar 31 located below bends upward and passes through between the corresponding two layers of longitudinal reinforcing bars, ensuring the rationality of the structure and force of the joint.

[0038] Since the reinforcing bar passing holes and the longitudinal sleeves 23 are arranged alternately, the first longitudinal reinforcing bar 21 and the second longitudinal reinforcing bar 22 in the same layer are also arranged alternately. By arranging the longitudinal reinforcing bars alternately, not only can it ensure that the stirrups have a good restraint effect on the longitudinal reinforcing bars, enhance the bearing capacity and ductility of the longitudinal beam 2, but also avoid increasing the number of stirrup limbs too much, which affects the pouring of the concrete in the core area of the joint and affects the quality. And the alternate arrangement can also more flexibly adjust the force distribution of the longitudinal reinforcing bars, making the structure more reasonable in force.

[0039] In order to ensure that the node can meet the actual needs of large spans and large spaces, the through-length longitudinal reinforcement rate of the longitudinal beam 2 and the transverse beam 3 is not less than 50%, that is, the number of the first longitudinal longitudinal reinforcement 21 and the first transverse longitudinal reinforcement 31 accounts for more than half of the total number of longitudinal longitudinal reinforcements and transverse longitudinal reinforcements.

[0040] In addition, the first transverse longitudinal reinforcement 31 is bent to the outside of the steel body 4 through the horizontal axil structure 5, and the slope of the axil structure 5 is 1:6. In order to ensure that the center lines of the beam and column centers can coincide, horizontal axil is used here to eliminate the adverse effects of beam eccentricity on the core area of ​​the beam-column node. In addition, the horizontal axil structure 5 can also improve the shear bearing capacity of the beam 3. For example, in a frame structure that bears a large horizontal load, the horizontal axil at the beam end can effectively prevent the beam from shearing failure; for beams with large spans and uneven load distribution, horizontal axil can optimize the force; it can also strengthen the connection between the beam and the column or other components, enhance the integrity and stability of the structure, make the internal force distribution of the beam more uniform, and reduce the stress concentration at the beam end.

[0041] In summary, the node proposed by the utility model does not require on-site welding technology, and the structure can ensure the bearing capacity of the steel section while meeting the requirements for the arrangement of high-density multi-layer longitudinal reinforcements, so that the internal force of the node can be effectively transmitted to the steel section column 1. The force transmission is clear, the construction is simple, and the construction progress can be accelerated.

[0042] Embodiment 2

[0043] On the basis of the first embodiment, the present invention further proposes a construction method for a connection node, which adopts the node of the steel-concrete column and the reinforced concrete beam in the first embodiment and includes the following steps.

[0044] S1. Pre-weld the longitudinal sleeve 23 and the transverse sleeve 33 on the steel body 4, and reserve the reinforcing bar holes so that the reinforcing bar holes are arranged at an interval from the longitudinal sleeve 23; wherein the inner holes of the longitudinal sleeve 23 and the transverse sleeve 33 are both threaded holes to facilitate the subsequent connection of the corresponding longitudinal reinforcing bars.

[0045] S2. Thread the second longitudinal reinforcement 22 and the second transverse reinforcement 32 so that their ends have threads for easy threaded connection with corresponding sleeves.

[0046] S3. Position the steel body 4. After positioning, the second longitudinal reinforcement 22 and the second transverse reinforcement 32 are respectively threadedly connected to the longitudinal sleeve 23 and the transverse sleeve 33; the threaded connection method is adopted here, which not only ensures the strength of the connection, but also facilitates the construction operation and reduces the difficulty of construction.

[0047] S4. Pass the first longitudinal longitudinal reinforcement bar 21 through the bar-passing hole, and bend the first transverse longitudinal reinforcement bar 31 to be arranged longitudinally on both sides of the profiled steel body 4. When there is a set of longitudinal longitudinal reinforcement bars, the first transverse longitudinal reinforcement bar 31 is bent downward and passes through between the corresponding two layers of longitudinal longitudinal reinforcement bars. When there are two sets, the upper first transverse longitudinal reinforcement bar 31 is bent downward, and the lower first transverse longitudinal reinforcement bar 31 is bent upward.

[0048] S5. Bind the longitudinal reinforcement bars set as described above, and then perform pouring after binding to form the profiled steel column 1, longitudinal beam 2 and cross beam 3. After the pouring is completed, both the longitudinal reinforcement bars and the profiled steel are wrapped in the concrete to form the corresponding profiled steel concrete column and reinforced concrete beam.

[0049] Using this method to construct the aforementioned connection node can effectively reduce the construction difficulty, improve the construction efficiency, and can be widely applied in the field of building structures, with broad application prospects.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0052] Based on the inspiration of the ideal embodiments of the present utility model, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A joint of a steel reinforced concrete column and a reinforced concrete beam, comprising a longitudinal beam (2), a cross beam (3), and a steel column body (1) with a steel profile body (4) built therein. The three are perpendicular to each other and intersect at the joint, and are characterized in that: The longitudinal beam (2) includes a first longitudinal reinforcing bar (21) and a second longitudinal reinforcing bar (22) that are parallel to each other. The first longitudinal reinforcing bar (21) passes through the section steel body (4) throughout its length, and the second longitudinal reinforcing bar (22) is connected to both sides of the section steel body (4) through a longitudinal sleeve (23). The cross beam (3) includes a first transverse reinforcing bar (31) and a second transverse reinforcing bar (32). The second transverse reinforcing bar (32) is connected to the section steel body (4) through a transverse sleeve (33), and the first transverse reinforcing bar (31) is horizontally bent to be arranged throughout the length on the outer side of the section steel body (4).

2. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 1, wherein: A reinforcing bar passing hole for the first longitudinal reinforcing bar (21) to pass through is further formed on the outer side of the section steel body (4), and the reinforcing bar passing holes and the longitudinal sleeves (23) are arranged alternately.

3. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 2, characterized in that: There are two sets of the first longitudinal reinforcing bar (21), the second longitudinal reinforcing bar (22), the first transverse reinforcing bar (31) and the second transverse reinforcing bar (32) arranged up and down. Each set of the first longitudinal reinforcing bar (21), the second longitudinal reinforcing bar (22), the first transverse reinforcing bar (31) and the second transverse reinforcing bar (32) are arranged in multiple layers, and the first transverse reinforcing bar (31) in the same set is arranged alternately with the first longitudinal reinforcing bar (21) and the second longitudinal reinforcing bar (22).

4. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 3, characterized in that: When passing through the longitudinal beam (2), the first transverse reinforcing bar (31) located above bends downward and passes through between two layers of longitudinal reinforcing bars, and the first transverse reinforcing bar (31) located below bends upward and passes through between the corresponding two layers of longitudinal reinforcing bars.

5. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 1, characterized in that: The first transverse reinforcing bar (31) is bent to the outer side of the section steel body (4) through a horizontal haunch structure (5), and the slope of the haunch structure (5) is 1:

6.

6. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 1, characterized in that: Both between the second longitudinal reinforcing bar (22) and the longitudinal sleeve (23) and between the second transverse reinforcing bar (32) and the transverse sleeve (33) are connected by screw threads, and both the longitudinal sleeve (23) and the transverse sleeve (33) are fixedly connected to the section steel body (4) by welding.

7. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 1, wherein: The passing rate of the full-length longitudinal reinforcing bars of the longitudinal beam (2) and the cross beam (3) is not less than 50%.

8. The joint of the steel reinforced concrete column and the reinforced concrete beam according to claim 1, characterized in that: The section steel body (4) is made of square steel pipe.

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