A connection structure between steel tube concrete column and reinforced concrete beam

Abstract

The present invention relates to the technical field of building components, and in particular to a connection structure of a steel tube concrete column and a reinforced concrete beam, comprising a hollow steel tube, a beam skeleton, and an auxiliary structure; a connection notch is arranged on the side wall of the hollow steel tube; a vertical column skeleton is arranged in the hollow steel tube; a tubular outer shell is sleeved on the outer side of the beam reinforcement; the beam skeleton comprises a plurality of beam reinforcements; a downward pressure is applied to one end of the beam reinforcement inserted into the connection notch to balance the gravity of the beam reinforcement, so that the beam reinforcement remains in a horizontal state, thereby ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete.

Description

Technical Field

[0001] The invention relates to the technical field of building components, and in particular to a connection structure of a steel tube concrete column and a reinforced concrete beam. Background Art

[0002] Concrete has high compressive strength but weak bending resistance; steel, especially steel section, has strong bending resistance and good elastic-plasticity, but it is easy to become unstable and lose axial compressive resistance when under pressure. Steel tube concrete can combine the advantages of both in structure, which can put concrete in a lateral compression state, and its compressive strength is doubled. At the same time, the presence of concrete increases the rigidity of the steel tube. The two work together to greatly improve the bearing capacity. The combination of steel tube concrete column and reinforced concrete beam has gradually replaced steel section concrete column and is widely used.

[0003] In the existing connection structure of steel tube concrete column and reinforced concrete beam, the steel tube concrete column is composed of hollow steel tube and concrete, and the reinforced concrete beam is composed of cross beam steel bar group and concrete. A notch is opened on the top of the hollow steel tube, and the notch is used to place and install the reinforced concrete beam. An I-beam is arranged in some steel tube concrete columns. One end of the cross beam steel bar is inserted into the notch, and the other end extends outside the hollow steel tube; then the metal shell of the cross beam is sleeved on the outside of the cross beam steel bar, and the metal shell is fixed to the hollow steel tube by bolts or welding. After that, concrete is poured into the hollow steel tube and the shell of the cross beam steel bar, and the steel structure is combined with the concrete. However, when the cross beam steel bar is inserted into the notch and the shell is fixed on the hollow steel tube, because the length of the cross beam steel bar outside the hollow steel tube is greater than the length of the insertion notch, the end of the cross beam steel bar outside the hollow steel tube is deflected downward under the action of gravity, thereby affecting the vertical relationship between the reinforced concrete beam and the steel tube concrete column after pouring. Summary of the invention

[0004] The present invention provides a connection structure of a steel tube concrete column and a reinforced concrete beam to solve the above problem.

[0005] The connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention adopts the following technical scheme: a connection structure of a steel tube concrete column and a reinforced concrete beam comprises a hollow steel tube, a crossbeam skeleton and an auxiliary structure.

[0006] The hollow steel pipe is a rectangular pipe, which is vertically arranged with the lower end fixed under the ground. A vertical column skeleton is arranged inside the hollow steel pipe. After concrete is poured into the hollow steel pipe, the concrete solidifies and the vertical column skeleton and the hollow steel pipe form a steel pipe concrete column. A connecting groove is arranged on the side wall of the hollow steel pipe.

[0007] The crossbeam skeleton includes a plurality of crossbeam steel bars; the crossbeam steel bars are arranged horizontally, the plurality of crossbeam steel bars form a rectangle, and are fixedly connected by stirrups; the end of the crossbeam steel bars close to the hollow steel pipe is inserted into the connecting groove; the lower crossbeam steel bars are pressed against the lower edge of the connecting groove; a tubular outer shell is sleeved on the outer side of the crossbeam steel bars; the outer shell is fixed on the side wall of the hollow steel pipe; after concrete is poured into the outer shell, the concrete solidifies and the crossbeam skeleton and the outer shell form a reinforced concrete beam.

[0008] The auxiliary structure is set in the hollow steel tube and above the crossbeam skeleton; the auxiliary structure is used to apply downward pressure to the end of the crossbeam reinforcement inserted into the connecting notch to balance the gravity of the crossbeam reinforcement, so that the crossbeam reinforcement remains horizontal, ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel tube through the crossbeam reinforcement, reducing the pressure on the concrete in the steel tube concrete column and reducing the probability of the concrete in the steel tube concrete column breaking and affecting the structural strength.

[0009] Furthermore, the auxiliary structure includes a pressure plate; the pressure plate is arranged in the hollow steel tube; the pressure plate is inclined up and down, the upper end is fixedly connected to the upper edge of the connecting notch, and the lower end is away from the side wall of the hollow steel tube; the pressure plate is an elastic plate. When the end of the crossbeam reinforcement close to the hollow steel tube is inserted into the connecting notch, the end of the crossbeam reinforcement pushes the lower end of the pressure plate, so that the pressure plate is deformed upward, and the lower end of the pressure plate is pressed against the upper crossbeam reinforcement, and the lower crossbeam reinforcement is pressed against the lower edge of the connecting notch. The pressure plate provides downward pressure for the end of the crossbeam reinforcement inserted into the connecting notch, and the pressure point of the crossbeam reinforcement pressing on the lower edge of the connecting notch is used as a fulcrum. The pressure provided by the pressure plate is balanced with the gravity of the crossbeam skeleton, so that the crossbeam reinforcement remains in a horizontal state, ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete.

[0010] Furthermore, the lower edge of the connecting notch is in an arc shape. When the reinforced concrete beam is vibrated and the pressure on the reinforced concrete beam is transmitted to the hollow steel pipe through the crossbeam steel bars, the arc-shaped lower edge of the connecting notch disperses the pressure transmitted from the reinforced concrete beam to the hollow steel pipe to both sides, reducing the pressure on the hollow steel pipe in the vertical direction and improving the structural stability after pouring concrete.

[0011] Furthermore, the lower end of the pressing plate is arc-shaped.

[0012] Furthermore, the length between the upper end and the lower end of the pressing plate is smaller than the length between the upper edge and the lower edge of the connecting notch, so as to reduce the resistance when the end of the crossbeam reinforcement close to the hollow steel pipe is inserted into the connecting notch.

[0013] Furthermore, when processing the connection notch, the connection notch is firstly cut out by a cutting machine, and then the upper end of the pressing plate is welded to the upper edge of the connection notch by welding.

[0014] Furthermore, when processing the connecting groove, first use a cutting machine to cut out a U-shaped groove with the opening facing upward, and bend the side wall portion of the hollow steel pipe in the U-shaped groove into the hollow steel pipe to form a connecting groove, and at the same time make the side wall portion of the hollow steel pipe in the U-shaped groove constitute a pressure plate.

[0015] Furthermore, the outer shell is fixed to the side wall of the hollow steel pipe by bolts.

[0016] Furthermore, the vertical column skeleton includes a plurality of vertical column steel bars; the vertical column steel bars are vertically arranged, the plurality of vertical column steel bars form a rectangle, and are fixedly connected by stirrups.

[0017] Furthermore, the crossbeam reinforcement is inserted between two adjacent vertical column reinforcements.

[0018] The beneficial effects of the present invention are:

[0019] 1. Apply downward pressure to one end of the crossbeam reinforcement inserted into the connecting groove to balance the gravity of the crossbeam reinforcement and keep the crossbeam reinforcement in a horizontal state, thus ensuring the structural strength of the steel tube concrete column and reinforced concrete beam after pouring concrete.

[0020] 2. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel tube through the crossbeam steel bars, reducing the pressure on the concrete in the steel tube concrete column and reducing the probability of the concrete in the steel tube concrete column breaking and affecting the structural strength.

[0021] 3. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel pipe through the crossbeam steel bars. The arc-shaped lower edge of the connecting groove disperses the pressure transmitted from the reinforced concrete beam to the hollow steel pipe to both sides, reducing the pressure on the hollow steel pipe in the vertical direction and improving the structural stability after pouring concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention;

[0024] Figure 2 A top view of an embodiment of a connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention;

[0025] Figure 3 A side view of an embodiment of a connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention;

[0026] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0027] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0028] Figure 6 The figure is a schematic diagram of a hollow steel tube of an embodiment of a connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention.

[0029] In the figure: 100, hollow steel pipe; 110, vertical column frame; 200, connecting notch; 300, outer shell; 310, crossbeam reinforcement; 400, pressure plate. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] An embodiment of a connection structure of a steel tube concrete column and a reinforced concrete beam of the present invention is as follows: Figures 1 to 6 As shown: a connection structure of a steel tube concrete column and a reinforced concrete beam, including a hollow steel tube 100, a crossbeam skeleton, and an auxiliary structure.

[0032] The hollow steel pipe 100 is a rectangular pipe. The hollow steel pipe 100 is arranged vertically, and the lower end is fixed below the ground. A vertical column skeleton 110 is arranged inside the hollow steel pipe 100. The vertical column skeleton 110 includes a plurality of vertical column steel bars. The vertical column steel bars are arranged vertically, and the plurality of vertical column steel bars form a rectangle and are fixedly connected by stirrups. An I-beam (not shown in the figure) is arranged in the middle of the rectangle formed by the plurality of vertical column steel bars. After concrete is poured into the hollow steel pipe 100, the concrete solidifies and the vertical column skeleton 110 and the hollow steel pipe 100 form a steel pipe concrete column. A connecting notch 200 is arranged on the side wall of the hollow steel pipe 100.

[0033] The cross beam skeleton includes a plurality of cross beam steel bars 310; the cross beam steel bars 310 are arranged horizontally, and the plurality of cross beam steel bars 310 are surrounded by a rectangle and fixedly connected by stirrups; the end of the cross beam steel bar 310 close to the hollow steel pipe 100 is inserted into the connection slot 200; the cross beam steel bar 310 is inserted between two adjacent vertical column steel bars. The lower cross beam steel bar 310 is pressed against the lower edge of the connection slot 200; a tubular outer shell 300 is sleeved on the outer side of the cross beam steel bar 310; the outer shell 300 is fixed to the side wall of the hollow steel pipe 100 by bolts. After concrete is poured into the outer shell 300, the concrete solidifies and the cross beam skeleton and the outer shell 300 form a reinforced concrete beam.

[0034] The auxiliary structure is arranged in the hollow steel tube 100 and is located above the crossbeam skeleton; the auxiliary structure is used to apply downward pressure to one end of the crossbeam reinforcement 310 inserted into the connection notch 200 to balance the gravity of the crossbeam reinforcement 310, so that the crossbeam reinforcement 310 remains horizontal, ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel tube 100 through the crossbeam reinforcement 310, reducing the pressure on the concrete in the steel tube concrete column and reducing the probability of the concrete in the steel tube concrete column breaking and affecting the structural strength.

[0035] The auxiliary structure includes a pressing plate 400; the pressing plate 400 is arranged in the hollow steel pipe 100; the pressing plate 400 is inclined up and down, the upper end is fixedly connected to the upper edge of the connecting groove 200, and the lower end is away from the side wall of the hollow steel pipe 100; the pressing plate 400 is an elastic plate. When the end of the cross beam reinforcement 310 close to the hollow steel pipe 100 is inserted into the connection slot 200, the end of the cross beam reinforcement 310 pushes the lower end of the pressing plate 400, so that the pressing plate 400 is deformed upward, and the lower end of the pressing plate 400 is pressed against the upper cross beam reinforcement 310, and the lower cross beam reinforcement 310 is pressed against the lower edge of the connection slot 200. The pressing plate 400 provides a downward pressing force for the end of the cross beam reinforcement 310 inserted into the connection slot 200. With the pressing point of the cross beam reinforcement 310 pressing against the lower edge of the connection slot 200 as a fulcrum, the pressing force provided by the pressing plate 400 and the gravity of the cross beam skeleton are balanced, so that the cross beam reinforcement 310 remains in a horizontal state, ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete. The length between the upper and lower ends of the pressing plate 400 is less than the length between the upper and lower edges of the connection slot 200. This is to reduce the resistance when the end of the crossbeam reinforcement 310 close to the hollow steel pipe 100 is inserted into the connecting notch 200 .

[0036] In this embodiment, the lower end of the pressing plate 400 is in an arc shape. The lower edge of the connecting notch 200 is in an arc shape. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel pipe 100 through the crossbeam reinforcement 310, and the arc-shaped lower edge of the connecting notch 200 disperses the pressure transmitted from the reinforced concrete beam to the hollow steel pipe 100 to both sides, reducing the pressure on the hollow steel pipe 100 in the vertical direction, and improving the structural stability after pouring concrete.

[0037] In this embodiment, when processing the connection notch 200, the connection notch 200 is first cut out by a cutting machine, and then the upper end of the pressing plate 400 is welded to the upper edge of the connection notch 200. In other embodiments, a U-shaped groove with an upward opening may be first cut out by a cutting machine, and the side wall portion of the hollow steel pipe 100 in the U-shaped groove is bent into the hollow steel pipe 100, so that the U-shaped groove forms the connection notch 200, and the side wall portion of the hollow steel pipe 100 in the U-shaped groove constitutes the pressing plate 400.

[0038] In combination with the above embodiments, the use principle and working process of the present invention are as follows: when in use, the hollow steel pipe 100 is placed vertically and its lower end is fixed under the ground. The end of the crossbeam steel bar 310 close to the hollow steel pipe 100 is inserted into the connection notch 200. When the end of the cross beam reinforcement 310 close to the hollow steel pipe 100 is inserted into the connection slot 200, the end of the cross beam reinforcement 310 pushes the lower end of the pressing plate 400, so that the pressing plate 400 is deformed upward, and the lower end of the pressing plate 400 is pressed against the upper cross beam reinforcement 310, and the lower cross beam reinforcement 310 is pressed against the lower edge of the connection slot 200. The pressing plate 400 provides a downward pressing force for the end of the cross beam reinforcement 310 inserted into the connection slot 200. With the pressing point of the cross beam reinforcement 310 pressing against the lower edge of the connection slot 200 as a fulcrum, the pressing force provided by the pressing plate 400 and the gravity of the cross beam skeleton are balanced, so that the cross beam reinforcement 310 remains in a horizontal state, ensuring the structural strength of the steel tube concrete column and the reinforced concrete beam after pouring concrete. The length between the upper and lower ends of the pressing plate 400 is less than the length between the upper and lower edges of the connection slot 200. This is to reduce the resistance when the end of the crossbeam reinforcement 310 close to the hollow steel pipe 100 is inserted into the connecting notch 200 .

[0039] Then the outer shell 300 is fixed to the side wall of the hollow steel pipe 100 by bolts. After pouring concrete into the hollow steel pipe 100, the concrete solidifies and the vertical column skeleton 110 and the hollow steel pipe 100 form a steel tube concrete column; after pouring concrete into the outer shell 300, the concrete solidifies and the cross beam skeleton and the outer shell 300 form a reinforced concrete beam. When the reinforced concrete beam is vibrated, the pressure on the reinforced concrete beam is transmitted to the hollow steel pipe 100 through the cross beam steel bars 310, and the arc-shaped lower edge of the connecting notch 200 disperses the pressure transmitted from the reinforced concrete beam to the hollow steel pipe 100 to both sides, reducing the pressure on the hollow steel pipe 100 in the vertical direction, and improving the structural stability after pouring concrete.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection structure between a steel tube concrete column and a reinforced concrete beam, characterized in that: It includes hollow steel tubes, beam skeletons, and auxiliary structures; The hollow steel tube is a rectangular tube, which is vertically arranged and fixed at the lower end below the ground. A vertical column skeleton is arranged inside the hollow steel tube. After concrete is poured into the hollow steel tube, the concrete solidifies and the vertical column skeleton and the hollow steel tube form a steel tube concrete column. A connecting notch is arranged on the side wall of the hollow steel tube. The crossbeam skeleton includes a plurality of crossbeam steel bars; the crossbeam steel bars are arranged horizontally, the plurality of crossbeam steel bars are surrounded by a rectangle, and are fixedly connected by stirrups; one end of the crossbeam steel bars close to the hollow steel pipe is inserted into the connection notch; The lower crossbeam reinforcement is pressed against the lower edge of the connecting notch; a tubular outer shell is sleeved on the outer side of the crossbeam reinforcement; the outer shell is fixed on the side wall of the hollow steel tube; after concrete is poured into the outer shell, the concrete solidifies and the crossbeam skeleton and the outer shell form a reinforced concrete beam; The auxiliary structure is arranged in the hollow steel pipe and is located above the crossbeam skeleton; the auxiliary structure is used to apply downward pressure to one end of the crossbeam steel bar inserted into the connecting notch.

2. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 1, characterized in that: The auxiliary structure includes a pressing plate; the pressing plate is arranged in the hollow steel pipe; the pressing plate is arranged to be inclined up and down, the upper end is fixedly connected to the upper edge of the connecting groove, and the lower end is away from the side wall of the hollow steel pipe; the pressing plate is an elastic plate.

3. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 2, characterized in that: The lower edge of the connecting notch is in an arc shape.

4. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 3, characterized in that: The lower end of the pressing plate is arc-shaped.

5. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 2, characterized in that: The length between the upper end and the lower end of the pressing plate is smaller than the length between the upper edge and the lower edge of the connecting notch.

6. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 5, characterized in that: When processing the connection notch, first use a cutting machine to cut out the connection notch, and then weld the upper end of the pressure plate to the upper edge of the connection notch by welding.

7. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 5, characterized in that: When processing the connecting groove, first use a cutting machine to cut out a U-shaped groove with the opening facing upward, and bend the side wall portion of the hollow steel pipe in the U-shaped groove into the hollow steel pipe to form a connecting groove, and at the same time make the side wall portion of the hollow steel pipe in the U-shaped groove form a pressure plate.

8. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 1, characterized in that: The outer shell is fixed to the side wall of the hollow steel tube by bolts.

9. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 1, characterized in that: The vertical column skeleton includes a plurality of vertical column steel bars; the vertical column steel bars are vertically arranged, the plurality of vertical column steel bars form a rectangle, and are fixedly connected by stirrups.

10. The connection structure of a steel tube concrete column and a reinforced concrete beam according to claim 9, characterized in that: The horizontal beam reinforcement is inserted between two adjacent vertical column reinforcements.

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