Connecting structure of concrete-filled steel tubular column and split-level reinforced concrete frame beam

Abstract

The utility model discloses a concrete filled steel tubular column and split-level reinforced concrete frame beam connecting structure which comprises a concrete filled steel tubular column body, a cross-shaped fixing frame is fixedly installed in the middle of the concrete filled steel tubular column body, and a first split-level reinforced concrete beam is installed at the top end of one side of the cross-shaped fixing frame. A first split-level reinforced concrete beam is installed at the bottom end of one side of the cross-shaped fixing frame, a second split-level reinforced concrete beam is installed at the bottom end of the other side of the cross-shaped fixing frame, and first profile steel brackets are installed on the two sides of the connecting position of the first split-level reinforced concrete beam and the cross-shaped fixing frame. A built-in anti-bending steel corbel transition section is adopted to arrange an anti-shearing stud in a built-in steel cow leg section to ensure the cooperative work of a beam end combination section, and the combination section resists the bending moment transmitted by the beam end; meanwhile, an anti-shearing steel corbel is combined to resist shearing force; on the basis of the current specifications and atlas, the structure of the concrete filled steel tube and split-level beam connecting joint is supplemented.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete composite column construction technology, specifically a connection structure between a steel-concrete composite column and a staggered reinforced concrete frame beam. Background Technology

[0002] Reinforced concrete frame structures have been widely used in modern buildings due to their many advantages. First, reinforced concrete can easily produce high-strength, durable, and corrosion-resistant structural materials, resulting in a long service life. Second, reinforced concrete frame structures can provide strong protection against natural disasters such as earthquakes and windstorms, and can withstand huge impact forces and horizontal vibration forces, thus exhibiting high stability and safety. Staggered reinforced concrete frame beams are one type of existing reinforced concrete frame structure.

[0003] Compared with reinforced concrete structures, steel-concrete composite structures can reduce the cross-sectional dimensions of components, reduce the self-weight of the structure, reduce seismic response, increase effective space, reduce foundation costs, and increase the ductility and durability of components and structures. Therefore, the use of steel-concrete composite structural components can significantly improve the load-bearing capacity, seismic performance, and durability of the structure within a reasonable cost range.

[0004] However, traditional steel-concrete composite structure construction has the following disadvantages:

[0005] (1) In the traditional construction of steel-concrete composite structures, only the construction of the joint between steel-concrete composite pipe and beam of equal height can be installed, and the construction method of the joint between steel-concrete composite pipe and beam of unequal height is not given.

[0006] (2) Conventional ring beam construction has large cross-sectional plane dimensions and beam height, and the nodes occupy a large indoor building area, which can easily collide with indoor pipelines and occupy the pipeline crossing path.

[0007] (3) Conventional beam-through method has high positioning accuracy of steel bar through hole, but is difficult to construct and takes a long time.

[0008] (4) The beam end of the beam needs to be treated with a haunch, which is complicated to construct. At the same time, the force of the bending moment transmitted at the node is relatively unclear. The beam with the haunch is prone to collide with indoor pipelines and occupy the pipeline crossing path. Utility Model Content

[0009] The purpose of this utility model is to provide a connection structure between a steel tube concrete column and a staggered reinforced concrete frame beam, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a connection structure between a steel-concrete composite column and a staggered reinforced concrete frame beam, comprising a steel-concrete composite column body, a cross-shaped fixing frame fixedly installed in the middle of the steel-concrete composite column body, a first staggered reinforced concrete beam installed at the top of one side of the cross-shaped fixing frame, and a second staggered reinforced concrete beam installed at the bottom of the other side of the cross-shaped fixing frame, first-type steel brackets installed on both sides of the connection between the first staggered reinforced concrete beam and the cross-shaped fixing frame, and second-type steel brackets installed on both sides of the connection between the second staggered reinforced concrete beam and the cross-shaped fixing frame, with a plurality of shear studs threadedly connected to the surfaces of the two first-type steel brackets and the two second-type steel brackets.

[0011] As a preferred technical solution of this utility model, the surfaces of the two first type steel brackets are fixedly connected to the first staggered reinforced concrete beam by shear studs.

[0012] As a preferred embodiment of this utility model, the surfaces of the two second type steel brackets are fixedly connected to the second staggered reinforced concrete beam by shear studs.

[0013] As a preferred embodiment of this utility model, reinforcing rings are fitted at the connection points between the cross-shaped fixing frame and the first staggered reinforced concrete beam, and at the connection points between the cross-shaped fixing frame and the second staggered reinforced concrete beam.

[0014] As a preferred technical solution of this utility model, the steel-concrete composite column body includes a soil column tube and a main beam ring reinforcement. The outer side of the soil column tube is fixedly connected to the inner side of the main beam ring reinforcement. Several frame beam longitudinal reinforcements are fixedly installed on the outer side of the main beam ring reinforcement. Several concrete pouring holes are opened on the surface of the main beam ring reinforcement. Several ring beam stirrups are fixedly installed inside the main beam ring reinforcement.

[0015] As a preferred embodiment of this utility model, stiffening ribs are fixedly installed at both ends of the inner wall of the cross-shaped fixing frame.

[0016] As a preferred embodiment of this utility model, steel sleeves are installed between the longitudinal reinforcement bars of several frame beams.

[0017] As a preferred embodiment of this utility model, the cross-shaped fixing frame includes a central platform and two telescopic rod bodies. A first height platform is provided at the top of the central platform, and a second height platform is provided at the bottom of the central platform. The middle portions of the top and bottom of the central platform are respectively fixedly connected to the fixed ends of the two telescopic rod bodies. The movable ends of the two telescopic rod bodies are respectively fixedly connected to the middle portions of the bottom of the first height platform and the middle portions of the top of the second height platform. Fixing seats are fixedly installed on both sides of the two telescopic rod bodies. Connecting plates are rotatably connected inside each of the four fixing seats. The ends of the four connecting plates furthest from the fixing seats are rotatably connected to... There are sliding seats, all four of which are slidably connected to the central platform. Two telescopic rods are rotatably connected to the middle of both sides of their bodies, and the movable ends of the two self-locking telescopic rods are rotatably connected to the middle of the four connecting plates. Springs are fixedly installed on the surfaces of the four connecting plates, and the ends of the four springs furthest from the connecting plates are fixedly connected to the side of the central platform directly opposite it. The vertical distance between the first height platform and the central platform is equal to the beam width of the first staggered reinforced concrete beam, and the vertical distance between the second height platform and the central platform is equal to the beam width of the second staggered reinforced concrete beam. The interior of the central platform is connected to the steel-concrete composite column body.

[0018] As a preferred embodiment of this utility model, both the first staggered reinforced concrete beam and the second staggered reinforced concrete beam include a concrete frame and a steel frame. The inner side of the concrete frame is fixedly connected to the outer side of the steel frame. Several beams extending to the outside are fixedly installed inside the steel frame. Steel columns are fixedly installed on both sides of the bottom end of the concrete frame. One side of the concrete frame on the first staggered reinforced concrete beam and one side of the concrete frame on the second staggered reinforced concrete beam are connected to a cross-shaped fixing frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The node structure is simple and the force transmission path is clear;

[0021] 2. An innovative and practical connection node between steel tube concrete columns and unequal-height reinforced concrete beams is proposed, which adopts an internally built-in anti-bending steel bracket transition section. Shear studs are set in the internally built-in steel bracket section to ensure that the beam end composite section works together and the composite section resists the bending moment transmitted from the beam end; at the same time, it is combined with the shear-resistant steel bracket to resist shear force.

[0022] 3. Based on the existing specifications and drawings, the construction of the connection node between steel-concrete composite pipe and staggered beam has been supplemented. Attached Figure Description

[0023] Figure 1 This is a detailed structural drawing of the joint between the steel-concrete composite column and the staggered reinforced concrete beam of this utility model.

[0024] Figure 2 This is a plan view of the connection node between the steel-concrete composite column and the staggered reinforced concrete beam of this utility model;

[0025] Figure 3 This is a flowchart of the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-shaped fixing bracket of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the first staggered reinforced concrete beam of this utility model.

[0028] In the diagram: 1. Concrete-filled steel pipe column body; 101. Soil column pipe; 102. Main beam ring reinforcement; 103. Frame beam longitudinal reinforcement; 104. Ring beam stirrups; 105. Concrete pouring hole; 2. Cross fixing frame; 21. Center platform; 22. First height platform; 23. Telescopic rod body; 24. Sliding seat; 25. Spring; 26. Connecting plate; 27. Second height platform; 28. Self-locking telescopic rod; 29. ​​Fixing seat; 3. First staggered reinforced concrete beam; 31. Concrete frame; 32. Reinforcing frame; 33. Reinforcing column; 34. Beam body; 4. First steel bracket; 5. Reinforcing ring; 6. Shear stud; 7. Second staggered reinforced concrete beam; 8. Stiffening rib; 9. Second steel bracket; 10. Reinforcing sleeve. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] Please see Figure 1-5 This utility model provides a connection structure between a steel tube concrete column and a staggered reinforced concrete frame beam, including a steel tube concrete column body 1, a cross-shaped fixing frame 2 fixedly installed in the middle of the steel tube concrete column body 1, a first staggered reinforced concrete beam 3 installed at the top of one side of the cross-shaped fixing frame 2, a second staggered reinforced concrete beam 7 installed at the bottom of the other side of the cross-shaped fixing frame 2, first type steel brackets 4 installed on both sides of the connection between the first staggered reinforced concrete beam 3 and the cross-shaped fixing frame 2, and second type steel brackets 9 installed on both sides of the connection between the second staggered reinforced concrete beam 7 and the cross-shaped fixing frame 2, and several shear studs 6 threadedly connected to the surfaces of the two first type steel brackets 4 and the two second type steel brackets 9.

[0031] The surfaces of the two first-type steel brackets 4 are fixedly connected to the first staggered reinforced concrete beam 3 by shear studs 6.

[0032] The surfaces of the two second-type steel brackets 9 are fixedly connected to the second staggered reinforced concrete beam 7 by shear studs 6.

[0033] Reinforcing rings 5 ​​are fitted at the connection points between the cross-shaped fixing frame 2 and the first staggered reinforced concrete beam 3, and at the connection points between the cross-shaped fixing frame 2 and the second staggered reinforced concrete beam 7.

[0034] The concrete-filled steel tube column body 1 includes a soil column tube 101 and a main beam ring reinforcement 102. The outer side of the soil column tube 101 is fixedly connected to the inner side of the main beam ring reinforcement 102. Several frame beam longitudinal reinforcements 103 are fixedly installed on the outer side of the main beam ring reinforcement 102. Several concrete pouring holes 105 are opened on the surface of the main beam ring reinforcement 102. Several ring beam stirrups 104 are fixedly installed inside the main beam ring reinforcement 102.

[0035] The two ends of both sides of the inner wall of the cross-shaped fixing bracket 2 are fixedly installed with stiffening ribs 8.

[0036] A steel sleeve 10 is installed between the longitudinal reinforcement bars 103 of several frame beams.

[0037] The cross-shaped fixing frame 2 includes a central platform 21 and two telescopic rod bodies 23. A first height platform 22 is provided at the top of the central platform 21, and a second height platform 27 is provided at the bottom of the central platform 21. The middle of the top and bottom of the central platform 21 are respectively fixedly connected to the fixed ends of the two telescopic rod bodies 23. The movable ends of the two telescopic rod bodies 23 are respectively fixedly connected to the middle of the bottom of the first height platform 22 and the middle of the top of the second height platform 27. Fixing seats 29 are fixedly installed on both sides of the two telescopic rod bodies 23. Connecting plates 26 are rotatably connected inside each of the four fixing seats 29. Sliding seats 24 are rotatably connected to the ends of the four connecting plates 26 away from the fixing seats 29. The sliding seats 24 are all slidably connected to the center platform 21. The middle of both sides of the two telescopic rod bodies 23 are rotatably connected to self-locking telescopic rods 28. The movable ends of the two self-locking telescopic rods 28 are rotatably connected to the middle of the four connecting plates 26 respectively. Springs 25 are fixedly installed on the surface of the four connecting plates 26. The ends of the four springs 25 away from the connecting plates 26 are fixedly connected to the side of the center platform 21 directly opposite to it. The vertical distance between the first height platform 22 and the center platform 21 is equal to the beam width of the first staggered reinforced concrete beam 3. The vertical distance between the second height platform 27 and the center platform 21 is equal to the beam width of the second staggered reinforced concrete beam 7. The interior of the center platform 21 is connected to the steel pipe concrete column body 1.

[0038] Both the first staggered reinforced concrete beam 3 and the second staggered reinforced concrete beam 7 include a concrete frame 31 and a steel frame 32. The inner side of the concrete frame 31 is fixedly connected to the outer side of the steel frame 32. Several beams 34 extending to the outside are fixedly installed inside the steel frame 32. Steel columns 33 are fixedly installed on both sides of the bottom end of the concrete frame 31. One side of the concrete frame 31 on the first staggered reinforced concrete beam 3 and one side of the second staggered reinforced concrete beam 7 are connected to the cross fixing frame 2.

[0039] In this invention, a cross-shaped fixing bracket 2 is installed on the outside of the steel-concrete composite column body 1; a first staggered reinforced concrete beam 3 is installed on one side of the cross-shaped fixing bracket 2, and a first transition section exists at the connection between the two; the first transition section is reinforced using a first type of steel bracket 4 and shear studs 6; a second staggered reinforced concrete beam 7 is installed on one side of the cross-shaped fixing bracket 2, and a second transition section exists at the connection between the two; the second transition section is reinforced using a second type of steel bracket 9 and shear studs 6.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structure for connecting a concrete-filled steel tubular column to a steel reinforced concrete frame beam, comprising a concrete-filled steel tubular column body (1), characterized in that: The middle part of the steel pipe concrete column body (1) is fixedly installed with a cross fixed frame (2), the top end of one side of the cross fixed frame (2) is installed with a first staggered reinforced concrete beam (3), the bottom end of the other side of the cross fixed frame (2) is installed with a second staggered reinforced concrete beam (7), the two sides of the connection part between the first staggered reinforced concrete beam (3) and the cross fixed frame (2) are both installed with a first steel corbel (4), the two sides of the connection part between the second staggered reinforced concrete beam (7) and the cross fixed frame (2) are both installed with a second steel corbel (9), the surfaces of the two first steel corbels (4) and the surfaces of the two second steel corbels (9) are all threadedly connected with a plurality of shear bolts (6).

2. The structure according to claim 1, wherein: the steel pipe concrete column is connected to the beam of the steel reinforced concrete frame by a connecting member. The surfaces of the two first steel corbels (4) are all fixedly connected with the first staggered reinforced concrete beam (3) through the shear bolts (6).

3. The structure according to claim 1, wherein: the steel pipe concrete column is connected to the beam of the steel reinforced concrete frame by a connecting member. The surfaces of the two second steel corbels (9) are all fixedly connected with the second staggered reinforced concrete beam (7) through the shear bolts (6).

4. The structure according to claim 1, wherein: the steel pipe concrete column and the steel reinforced concrete frame beam are connected by a connecting member. The connection part between the cross fixed frame (2) and the first staggered reinforced concrete beam (3) and the connection part between the cross fixed frame (2) and the second staggered reinforced concrete beam (7) are both sleeved with a reinforcing ring (5).

5. The structure according to claim 1, wherein: the steel pipe concrete column and the steel reinforced concrete frame beam are connected by a steel pipe concrete column and a steel reinforced concrete frame beam connecting structure. The steel pipe concrete column body (1) comprises a soil column pipe (101) and a main beam ring muscle (102), the outer side of the soil column pipe (101) is fixedly connected with the inner side of the main beam ring muscle (102), the outer side of the main beam ring muscle (102) is fixedly installed with a plurality of frame beam longitudinal muscles (103), the surface of the main beam ring muscle (102) is provided with a plurality of concrete pouring holes (105), and the inside of the main beam ring muscle (102) is fixedly installed with a plurality of ring beam stirrups (104).

6. The structure according to claim 1, wherein: the steel pipe concrete column and the steel reinforced concrete frame beam are connected by a steel pipe concrete column and a steel reinforced concrete frame beam connection structure. The two ends of the two sides of the inner wall of the cross fixed frame (2) are both fixedly installed with stiffening ribs (8).

7. The structure according to claim 5, wherein: the steel pipe concrete column is provided with a plurality of column flanges; the beam is provided with a plurality of beam flanges; the column flanges and the beam flanges are connected by a plurality of connecting members; and the connecting members are arranged in a staggered manner. A plurality of steel sleeves (10) are installed between the plurality of frame beam longitudinal muscles (103).

8. The structure according to claim 1, wherein: the steel pipe concrete column and the steel reinforced concrete frame beam are connected by a steel pipe concrete column and a steel reinforced concrete frame beam connection structure. The cross fixing frame (2) comprises a center table (21) and two telescopic rod bodies (23), the top end of the center table (21) is provided with a first height table (22), the bottom end of the center table (21) is provided with a second height table (27), the middle part of the top end of the center table (21) and the middle part of the bottom end of the center table (21) are fixedly connected with the fixed ends of the two telescopic rod bodies (23), the movable ends of the two telescopic rod bodies (23) are fixedly connected with the middle part of the bottom end of the first height table (22) and the middle part of the top end of the second height table (27) respectively, the two sides of the two telescopic rod bodies (23) are fixedly installed with fixed seats (29), the interiors of the four fixed seats (29) are rotatably connected with connecting plates (26), the ends, away from the fixed seats (29), of the four connecting plates (26) are rotatably connected with sliding seats (24), the four sliding seats (24) are slidably connected with the center table (21), the middle parts of the two sides of the two telescopic rod bodies (23) are rotatably connected with self-locking telescopic rods (28), the movable ends of the two self-locking telescopic rods (28) are rotatably connected with the middle parts of the four connecting plates (26), the surfaces of the four connecting plates (26) are fixedly installed with springs (25), the ends, away from the connecting plates (26), of the four springs (25) are fixedly connected with the opposite sides of the center table (21), the vertical distance between the first height table (22) and the center table (21) is equal to the beam width of the first staggered reinforced concrete beam (3), the vertical distance between the second height table (27) and the center table (21) is equal to the beam width of the second staggered reinforced concrete beam (7), the interior of the center table (21) is connected with the concrete-filled steel tubular column body (1).

9. The structure according to claim 1, wherein: the steel pipe concrete column and the steel reinforced concrete frame beam are connected by a steel pipe concrete column and a steel reinforced concrete frame beam connection structure. The first staggered reinforced concrete beam (3) and the second staggered reinforced concrete beam (7) both comprise a concrete frame (31) and a steel bar frame (32), the inner side of the concrete frame (31) is fixedly connected with the outer side of the steel bar frame (32), the interior of the steel bar frame (32) is fixedly installed with a plurality of beam bodies (34) extending to the outside, the two sides of the bottom end of the concrete frame (31) are fixedly installed with steel columns (33), one side of the concrete frame (31) on the first staggered reinforced concrete beam (3) and one side of the second staggered reinforced concrete beam (7) are connected with the cross fixing frame (2).

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