Steel reinforced concrete bracket mechanism for solving problem of large shearing force of support

Abstract

The utility model belongs to the technical field of steel structure buildings, and particularly relates to a steel reinforced concrete corbel mechanism for solving the problem of larger shearing force of a support, which comprises a cross-shaped steel reinforced concrete column, a first corbel longitudinal bar, a common concrete corbel bent reinforcing steel bar and a first stud, and is characterized in that the longitudinal bar of the cross-shaped steel reinforced concrete column is broken when encountering a steel rib; a vertical rib lapping plate and a vertical stiffening plate are arranged at the position corresponding to the steel rib, the vertical rib lapping plate is located at the position of a lower flange of the bracket steel rib, the vertical stiffening plate is located at the center of the bracket steel rib, a steel sleeve is arranged at the position, corresponding to a column longitudinal rib, of an upper flange of the bracket steel rib, and the steel sleeve is located at the position of the upper flange of the bracket steel rib. According to the steel reinforced concrete corbel mechanism for solving the problem of large shearing force of the support, when the corbel serves as the support of an upper large-span steel structure, the corbel with steel ribs is additionally arranged in concrete, the stress performance of the corbel can be improved by additionally arranging the profile steel, and the force transmission path is clearer and more reasonable.

Description

Technical Field

[0001] This utility model relates to the field of steel structure building technology, and in particular to a steel-concrete corbel mechanism for solving the problem of large shear force at the supports. Background Technology

[0002] Ordinary reinforced concrete corbels and ordinary reinforced concrete columns require a large amount of reinforcement due to the large shear force of the upper large-span structure and the presence of horizontal forces. The longitudinal bars, horizontal stirrups, and bent-up bars are intricately interwoven, making construction complex.

[0003] As steel structures are increasingly used in long-span structures, the advantages of steel-concrete composite structures, which have both high compressive and tensile strength, are becoming more and more apparent. When long-span structures require corbels as supports, steel frames are added to ordinary reinforced concrete corbels and the reinforced concrete columns connected to them. The steel frames and reinforcing bars share the load with the concrete, reducing the complex arrangement of reinforcing bars within the corbels and lowering the construction difficulty.

[0004] After adding steel reinforcement to the corbel, the number of longitudinal reinforcement bars can be significantly reduced under the large shear force of the superstructure, as the steel reinforcement bears part of the shear force. The number of horizontal stirrups and bent-up bars along the height of the corbel is also reduced accordingly. At the same time, because steel reinforcement is added to the corbel, the longitudinal reinforcement of the steel column is interrupted. As the main lateral force resisting member, the steel column's load-bearing capacity is greatly reduced when the reinforcement is interrupted. Therefore, how to ensure the continuity of the column's longitudinal reinforcement after adding steel reinforcement is a major problem. Utility Model Content

[0005] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0006] Specifically, the technical problem to be solved by this utility model is to provide a steel-concrete corbel mechanism for solving the problem of large shear force at the support, so as to solve the current technical problem that the load-bearing performance is greatly reduced when the reinforcing bars are broken.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A steel-concrete corbel mechanism for addressing large shear forces at supports includes a cruciform steel-concrete column, corbel steel reinforcement, a first corbel longitudinal reinforcement, ordinary concrete corbel bent-up reinforcement, and a first stud. Both the cruciform steel-concrete column and the corbel steel reinforcement contain additional steel reinforcement. The corbel steel reinforcement also contains additional steel sections. The longitudinal reinforcement of the cruciform steel-concrete column is interrupted at the steel reinforcement. Vertical stiffening plates and vertical reinforcing plates are provided at the corresponding steel reinforcement positions. The vertical stiffening plates are located at the lower flange of the corbel steel reinforcement, and the vertical reinforcing plates are located at the center of the corbel steel reinforcement. A steel sleeve is provided at the upper flange of the corbel steel reinforcement at the corresponding column longitudinal reinforcement. The steel sleeve is located at the upper flange of the corbel steel reinforcement. Second studs are provided on the upper and lower flanges of the corbel steel reinforcement section and on the cruciform steel reinforcement of the cruciform steel-concrete column.

[0009] As an improved technical solution, the cruciform steel-concrete column is equipped with horizontal steel column reinforcing ribs.

[0010] As an improved technical solution, the steel frame of the corbel is provided with a second longitudinal rib.

[0011] As an improved technical solution, a bent-up reinforcing bar is installed at the intersection of the lines connecting the lower ends of the hypotenuse of the corbel steel frame.

[0012] As an improved technical solution, the cross-shaped steel-concrete column is equipped with horizontal stirrups, one end of which is connected to the corbel steel frame.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this utility model, when the corbel is used as a support for the upper large-span steel structure, a corbel with steel reinforcement inside the concrete is adopted. The addition of steel sections can improve the load-bearing performance of the corbel and make the force transmission path clearer and more reasonable.

[0015] 2. In this utility model, the steel section can effectively disperse and resist the load from the superstructure, reduce the number of longitudinal bars, horizontal stirrups and bent bars in the corbel, enhance the bending and shear resistance of the corbel, thereby enhancing the overall stability of the corbel and facilitating construction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1This is a schematic diagram of a steel-concrete corbel structure for solving the problem of large shear force at the support, as described in this utility model.

[0018] Figure 2 This is a schematic diagram of the related structure of the steel-concrete corbel mechanism of this utility model, which is used to solve the problem of large shear force at the support.

[0019] Figure 3 This is a schematic diagram of a conventional reinforced concrete corbel structure used in steel-concrete corbel mechanisms to address the issue of large shear forces at supports, as described in this utility model.

[0020] Figure 4 This is a schematic diagram of the longitudinal reinforcement structure of a conventional concrete corbel in a steel-concrete corbel mechanism designed to address the large shear force at the support.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cross-shaped steel-concrete column; 2. Corbel steel frame; 3. Horizontal stiffening ribs of steel column; 4. First longitudinal reinforcement of corbel; 4a. Second longitudinal reinforcement of corbel; 5. Ordinary concrete corbel bent-up reinforcement; 5a. Corbel bent-up reinforcement; 6. Horizontal stirrups; 7. Steel sleeve; 8. Vertical lap plate; 9. First stud; 10. Second stud; 11. Vertical stiffening plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] like Figures 1 to 4 As shown in the figure, this embodiment provides a steel-concrete corbel mechanism for solving the problem of large shear force at supports. This steel-concrete corbel mechanism includes a cross-shaped steel-concrete column 1, corbel steel frame 2, first corbel longitudinal reinforcement 4, ordinary concrete corbel bent-up reinforcement 5, and first stud 9. Steel frames are added inside both the cross-shaped steel-concrete column 1 and the corbel steel frame 2. Steel sections are also added inside the corbel steel frame 2. The longitudinal reinforcement of the cross-shaped steel-concrete column 1 is interrupted at the steel frame. Vertical stiffening plates 8 and vertical stiffening plates 11 are provided at the corresponding steel frame positions. The vertical stiffening plates 8 are located at the lower flange of the corbel steel frame 2, and the vertical stiffening plates 1... 1. Located at the center of the corbel steel rib 2, steel ribs are added to the corbel to reduce the number of longitudinal reinforcement bars 4a of the second corbel, which are determined by the shear force and horizontal tension generated by the superstructure. The number of horizontal stirrups 6 and ordinary concrete corbel bent-up bars 5 distributed within the height range of the corbel steel rib 2 is also reduced accordingly. In addition, steel sections are added to the corbel steel rib 2, giving the corbel a larger cross-sectional area and moment of inertia. The corbel's ability to resist bending and shear deformation is enhanced. By setting steel ribs in the corbel, the steel ribs bear most of the shear force, reducing the number of longitudinal reinforcement bars in the corbel. While setting steel ribs in the ordinary corbel, cross steel columns are set in the concrete connected to the corbel.

[0028] A steel sleeve 7 is provided on the upper flange of the corbel steel 2 at the corresponding column longitudinal reinforcement. The steel sleeve 7 is located on the upper flange of the corbel steel 2. A second stud 10 is provided on the upper and lower flanges of the steel section of the corbel steel 2 and on the cross steel of the cross-shaped steel concrete column 1.

[0029] The cross-shaped steel-concrete column 1 is equipped with horizontal steel column reinforcing ribs 3.

[0030] The corbel steel frame 2 is provided with a second corbel longitudinal reinforcement 4a. The corbel steel frame 2 bears part of the shear force, and the remaining shear force is borne by the second corbel longitudinal reinforcement 4a in the corbel steel frame 2. The second corbel longitudinal reinforcement 4a calculated from the remaining shear force needs to be compared with the structural reinforcement, and the larger value is taken. It is also superimposed with the reinforcement calculated from the horizontal force. The first corbel longitudinal reinforcement 4 is the longitudinal reinforcement of the ordinary concrete corbel, and the second corbel longitudinal reinforcement 4a is the longitudinal reinforcement of the corbel after the steel frame is added.

[0031] A bent-up reinforcing bar 5a is installed at the intersection of the lines connecting the lower ends of the hypotenuse of the corbel steel 2. It has the function of bearing the principal tensile stress generated by the combined bending moment and shear force. The bent-up reinforcing bar 5a is the bent-up reinforcing bar of the corbel after the steel rib is added.

[0032] A horizontal stirrup 6 is installed inside the cross-shaped steel-concrete column 1. One end of the horizontal stirrup 6 is connected to the corbel 2. Due to the presence of the cross-shaped steel frame, the horizontal stirrup 6 in the cross-shaped steel-concrete column 1 connected to the corbel 2 is changed from a completely closed composite stirrup to a tie bar and a diamond stirrup. Studs are provided at the flange of the corbel 2 and the cross-shaped steel column. The first stud 9 is the stud on the flange of the cross-shaped steel column, and the second stud 10 is the stud on the corbel 2.

[0033] The steel corbel 2 includes a second corbel longitudinal reinforcement 4a determined by vertical shear force and horizontal force, a corbel bent-up reinforcement 5a determined according to corbel calculation and structural requirements, and a first stud 9. The upper and lower flanges of the corbel steel corbel 2 correspond to the positions of the second corbel longitudinal reinforcement 4 of the cross-shaped steel-concrete column 1. A steel sleeve 7 is provided on the upper flange of the corbel steel corbel 2, and a vertical stiffening plate 8 is provided on the lower flange. To ensure the continuity of the second corbel longitudinal reinforcement 4, a vertical stiffening plate 11 is added to replace the interrupted column longitudinal reinforcement.

[0034] The cross-shaped steel-concrete column 1 is a column formed by adding cross-shaped steel skeletons to the original reinforced concrete column. After adding the cross-shaped steel skeletons, the form of the horizontal stirrups 6 of the column changes from the original rectangular composite stirrups to rhomboid closed stirrups.

[0035] After the steel frame is added to the steel frame 2, the steel frame bears part of the vertical force transmitted from the superstructure, and the number of the second longitudinal reinforcement 4a, horizontal stirrups 6 and bent reinforcement 5a in the steel frame 2 can be reduced accordingly.

[0036] The longitudinal reinforcement of the cross-shaped steel-concrete column 1, which is broken at the corbel steel 2, is connected to the upper flange of the corbel steel 2 through a steel sleeve 7.

[0037] By adding steel reinforcement to ordinary reinforced concrete corbels to share the shear force transmitted from the superstructure, the steel sections have high strength and rigidity. Adding steel sections to the corbels can significantly improve their load-bearing capacity. The presence of steel sections increases the moment of inertia and section modulus of the corbel section, enabling it to withstand greater shear forces.

[0038] Under the same shear force, it can effectively reduce the number of longitudinal bars, horizontal stirrups 6 and bent-up bars 5a in the corbel, making the arrangement of bars in the corbel simple, the stress reasonable and the construction simple.

[0039] In addition, structural steel usually has good durability and can protect the concrete inside the corbel from external environmental erosion to a certain extent, thereby extending the service life of the corbel; it is more suitable for supports of large-span structures with large shear forces in the superstructure.

[0040] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A kind of steel reinforced concrete bracket mechanism for solving the large support shear, including cross steel reinforced concrete column (1), bracket steel skeleton (2), first bracket longitudinal reinforcement (4), ordinary concrete bracket bent reinforcement (5) and first stud (9), it is characterized by: The cross-shaped steel reinforced concrete column (1) and the corbel steel skeleton (2) are additionally provided with steel bones, the corbel steel skeleton (2) is additionally provided with a shaped steel, the longitudinal reinforcement of the cross-shaped steel reinforced concrete column (1) is disconnected at the steel bone, vertical lapping rib plates (8) and vertical stiffening plates (11) are arranged at the positions corresponding to the steel bones, the vertical lapping rib plates (8) are arranged at the lower flanges of the corbel steel skeleton (2), and the vertical stiffening plates (11) are arranged at the centers of the corbel steel skeleton (2); The upper flanges of the corbel steel skeleton (2) are provided with steel sleeves (7) at the positions corresponding to the longitudinal reinforcement of the column, the steel sleeves (7) are arranged at the upper flanges of the corbel steel skeleton (2), and the upper and lower flanges of the steel bone section of the corbel steel skeleton (2) and the cross-shaped steel bone of the cross-shaped steel reinforced concrete column (1) are all provided with second stud bolts (10).

2. The steel-concrete composite corbel mechanism for solving the problem of large shear force of the support according to claim 1, characterized in that: The cross-shaped steel reinforced concrete column (1) is provided with a steel column horizontal reinforcing rib (3).

3. The steel-concrete composite corbel mechanism for solving the problem of large shear force of the support according to claim 2, characterized in that: The corbel steel skeleton (2) is provided with second corbel longitudinal reinforcement (4a).

4. The steel-concrete composite corbel mechanism for solving the problem of large support shear according to claim 3, characterized in that: Corbel bent reinforcement (5a) is arranged at the intersection of the connecting line of the lower end points of the inclined edges of the corbel steel skeleton (2).

5. The steel-concrete composite corbel mechanism for solving the problem of large support shear according to claim 4, characterized in that: The cross-shaped steel reinforced concrete column (1) is provided with horizontal stirrups (6), one end of the horizontal stirrup (6) is connected with the corbel steel skeleton (2).

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