A connecting structure of a concrete-filled steel tube column, a reinforced concrete column and a concrete beam

Abstract

The application provides a kind of connecting structure of steel pipe concrete column, reinforced concrete column and concrete beam, and belongs to the technical field of building structure.The application includes steel pipe in steel pipe concrete column, reinforced concrete column and concrete beam, which are connected with each other, an enlarged end is arranged above the reinforced concrete column, a connecting end is arranged below the steel pipe, the connecting end is inserted into the inside of the enlarged end, a cross-shaped steel reinforcement section is arranged below the connecting end, which extends into the reinforced concrete column, the concrete beam is connected to the side of the enlarged end, a steel corbel is arranged inside the connection between the concrete beam and the enlarged end, one end of the steel corbel is connected to the steel pipe, and a plurality of reinforcing hoops are uniformly spaced in the vertical direction inside the enlarged end.The application meets the connection structure requirements of steel pipe concrete column, reinforced concrete column and concrete beam, improves the structural strength of the connection, and has simple structure and convenient construction.

Description

Technical Field

[0001] This invention relates to a connection structure between a steel tube concrete column, a reinforced concrete column, and a concrete beam, belonging to the field of building structure technology. Background Technology

[0002] Concrete-tube steel (CVT) columns fully utilize the material properties of both steel and concrete, offering advantages such as high load-bearing capacity and excellent seismic performance. Therefore, CVT columns are widely used in heavy-duty, large-span structures. In public buildings such as airport terminals and high-speed rail stations, the departure level passenger waiting halls require a large open space, i.e., a large column spacing. The roofs above these halls often employ large-span steel structures, while the lower floors have relatively less demanding requirements for openness. Therefore, considering both project cost and building functionality, the lower floors often use reinforced concrete frame structures, while the departure level uses CVT columns and a steel roof structure. In this structural system, the transition structure between the lower reinforced concrete columns and the upper CVT columns, as well as the connection between the reinforced concrete beams and columns at floor levels, are quite complex. Existing transition structures cannot guarantee an effective transition connection between the upper and lower CVT columns while simultaneously achieving a reasonable stress distribution and simple construction.

[0003] Therefore, in order to solve the above-mentioned technical problems, it is necessary to provide an innovative connection structure between steel tube concrete columns, reinforced concrete columns, and concrete beams to overcome the defects in the prior art. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a connection structure between steel tube concrete columns, reinforced concrete columns, and concrete beams, which solves the problem that existing transition structures in the prior art cannot guarantee an effective transition connection between the upper steel tube concrete column and the lower reinforced concrete column, while achieving reasonable stress distribution and simple construction.

[0005] To achieve the above and other related objectives, the present invention provides a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam, comprising a steel pipe in the steel-concrete composite column, a reinforced concrete column, and a concrete beam, wherein the steel pipe, reinforced concrete column, and concrete beam are intersected and connected. An enlarged end is provided above the reinforced concrete column, and a connecting end is provided below the steel pipe. The connecting end is inserted into the enlarged end, and a cross-shaped steel reinforcement section is provided below the connecting end, extending into the interior of the reinforced concrete column. The concrete beam is connected to the side of the enlarged end, and a steel bracket is provided inside the connection between the concrete beam and the enlarged end. One end of the steel bracket is connected to the steel pipe, and a plurality of reinforcing hoops are evenly spaced along the vertical direction inside the enlarged end.

[0006] In one embodiment of the present invention, the connecting end is tapered, with its diameter gradually decreasing from top to bottom. Both the upper and lower ends of the connecting end are provided with annular stiffening plates, and a cross stiffening plate is provided between the annular stiffening plates at the upper and lower ends.

[0007] By adopting this technical solution, annular stiffening plates and cross stiffening plates are installed inside the steel pipe and the connecting end, the bending strength of the steel pipe is improved.

[0008] In one embodiment of the present invention, an annular external stiffening plate is provided at the connection between the outer side of the steel pipe and the steel bracket, corresponding to the upper and lower flanges of the steel bracket. The annular external stiffening plate is welded to the upper and lower flanges of the steel bracket, and a plurality of vertical stiffening plates are evenly spaced between the annular external stiffening plates.

[0009] By adopting this technical solution, the steel bracket is connected to the steel pipe through a ring-shaped external stiffening plate, which improves the structural strength of the connection between the concrete beam and the steel pipe.

[0010] In one embodiment of the present invention, a plurality of longitudinal bars of reinforced concrete column are evenly spaced along the circumferential direction at the inner edge of the reinforced concrete column, and the longitudinal bars of reinforced concrete column extend into the enlarged end and are fixedly connected to the bottom surface of the annular outer stiffening plate by a bar connector.

[0011] By adopting this technical solution, the longitudinal reinforcement of the reinforced concrete column extends into the enlarged end and is fixedly connected to the bottom surface of the annular outer stiffening plate through a steel bar connector, thereby improving the structural strength of the connection between the reinforced concrete column and the enlarged end.

[0012] In one embodiment of the present invention, a plurality of vertical ribs are provided at the inner edge of the enlarged end, and the vertical ribs are welded to the reinforcing hoop.

[0013] By adopting this technical solution, the structural strength of the enlarged end is improved by setting reinforcing hoops and vertical ribs inside the enlarged end.

[0014] In one embodiment of the present invention, a folded flange is vertically provided at the planar flange of the cross-shaped steel reinforcement section.

[0015] By adopting this technical solution, a folded flange is vertically set at the planar flange of the cross-shaped steel reinforcement section, which improves the tightness of the connection between the cross-shaped steel reinforcement section and the reinforced concrete beam, thereby improving the structural strength of the connection between the cross-shaped steel reinforcement section and the reinforced concrete beam.

[0016] In one embodiment of the present invention, the bottom surface of the cross-shaped steel reinforcement section is connected to an annular base plate, and a plurality of positioning anchor bolts are provided below the annular base plate.

[0017] By adopting this technical solution, an annular base plate and positioning anchor bolts are installed below the cross-shaped steel reinforcement section, which improves the structural strength of the connection between the steel pipe and the reinforced concrete column.

[0018] In one embodiment of the present invention, a plurality of longitudinal reinforcement bars are provided on the upper and lower sides of the concrete beam along the length direction, and one end of the longitudinal reinforcement bars is welded to the upper and lower flange surfaces of the steel bracket.

[0019] By adopting this technical solution, longitudinal reinforcement bars are set inside the concrete beam, and the longitudinal reinforcement bars are welded to the upper and lower flange surfaces of the corbel, which improves the overall structural strength of the concrete beam and the structural strength of the connection between the concrete beam and the enlarged end.

[0020] As described above, the connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam according to the present invention has the following characteristics:

[0021] Beneficial effects:

[0022] The steel-concrete composite column, reinforced concrete column, and concrete beam connection structure of this invention has high overall structural strength, reliable force transmission performance, simple structure, and easy construction. It meets the connection structure requirements of steel-concrete composite columns, reinforced concrete columns, and concrete beams, improves the structural strength of the connection, and its simple structure and easy construction improve construction efficiency and reduce construction costs. Attached Figure Description

[0023] Figure 1 The diagram shown is a front view of the internal structure of a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam, according to an embodiment of the present invention.

[0024] Figure 2 This is shown as an embodiment of the present invention, illustrating a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam. Figure 1 A schematic diagram of the aa cross-section structure.

[0025] Figure 3 This is shown as an embodiment of the present invention, illustrating a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam. Figure 1 A schematic diagram of the bb cross-section structure.

[0026] Figure 4 This is shown as an embodiment of the present invention, illustrating a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam. Figure 1 A schematic diagram of the cc cross-section structure.

[0027] Figure 5 This is shown as an embodiment of the present invention, illustrating a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam. Figure 1A schematic diagram of the dd cross-section structure.

[0028] Figure 6 This is shown as an embodiment of the present invention, illustrating a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam. Figure 1 A schematic diagram of the ee cross-section structure.

[0029] Among them, 1. steel pipe; 2. concrete beam; 3. reinforced concrete column; 4. cross stiffening plate; 5. annular inner stiffening plate; 6. reinforcing hoop; 7. steel corbel; 8. longitudinal reinforcement of concrete beam; 9. vertical stiffening plate; 10. enlarged end; 11. vertical reinforcement; 12. longitudinal reinforcement of reinforced concrete column; 13. connection end; 14. cross-shaped steel reinforcement section; 15. annular base plate; 16. positioning anchor bolt; 17. annular outer stiffening plate; 18. angled flange. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0031] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0032] Please see Figures 1 to 6This invention provides a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam, comprising a steel pipe 1, a reinforced concrete column 3, and a concrete beam 2. The steel pipe 1, reinforced concrete column 3, and concrete beam 2 are intersected and connected. An enlarged end 10 is provided above the reinforced concrete column 3, and a connecting end 13 is provided below the steel pipe 1. The connecting end 13 is conical, with its diameter gradually decreasing from top to bottom. Both the upper and lower ends of the connecting end 13 are provided with annular stiffening plates 5, and a cross stiffening plate 4 is provided between the annular stiffening plates 5 at the upper and lower ends. The connecting end 13 is inserted into the enlarged end 10. A cross-shaped steel reinforcement section 14 is provided below the connecting end 13, extending into the interior of the reinforced concrete column 3. A beveled flange 18 is vertically provided at the cross-shaped steel reinforcement section 14. The bottom surface of the cross-shaped steel reinforcement section 14 is connected to an annular base plate 15, and several positioning anchor bolts 16 are provided below the annular base plate 15. The concrete beam 2 is connected to the enlarged end 10. On the side of the large end 10, a steel bracket 7 is installed inside the connection between the concrete beam 2 and the enlarged end 10. One end of the steel bracket 7 is connected to the steel pipe 1. Several reinforcing hoops 6 are evenly spaced vertically inside the enlarged end 10. Several vertical ribs 11 are installed at the inner edge of the enlarged end 10 and are welded to the reinforcing hoops 6. At the connection between the outer side of the steel pipe 1 and the steel bracket 7, annular external stiffening plates 17 are installed corresponding to the upper and lower flanges of the steel bracket 7. The annular external stiffening plates 17 are welded to the upper and lower flanges of the steel bracket 7. Next, several vertical stiffening plates 9 are evenly spaced between the annular external stiffening plates 17. Several longitudinal stiffening bars 12 of reinforced concrete column are evenly spaced along the circumferential direction at the inner edge of the reinforced concrete column 3. The longitudinal stiffening bars 12 of reinforced concrete column extend into the enlarged end 10 and are fixedly connected to the bottom surface of the annular external stiffening plates 17 through a steel bar connector. Several longitudinal stiffening bars 8 of concrete beam are arranged along the length direction on the upper and lower sides inside the concrete beam 2. One end of the longitudinal stiffening bar 8 of concrete beam is welded to the upper and lower flange surfaces of the steel bracket 7.

[0033] The working principle of a connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam is as follows: A ring-shaped stiffening plate 5 and a cross-shaped stiffening plate 4 are installed inside the steel pipe 1 and the connecting end 13, improving the bending strength of the steel pipe 1. An enlarged end 10 is installed above the reinforced concrete column 3, connecting the steel pipe 1 and the concrete beam 2. A reinforcing hoop 6 and vertical reinforcement 11 are installed inside the enlarged end 10, improving its structural strength. A steel bracket 7 is installed inside the connection between the enlarged end 10 and the concrete beam 2, further enhancing the connection strength. The steel bracket 7 is connected to the steel pipe 1 via a ring-shaped external stiffening plate 17, improving the connection strength between the concrete beam 2 and the steel pipe 1. A cross-shaped steel reinforcement section 14 is installed below the connecting end 13, and a ring-shaped base plate 15 and positioning anchor bolts 16 are installed below the cross-shaped steel reinforcement section 14, improving the connection strength between the steel pipe 1 and the reinforced concrete column 3. Through the application of the above structure, the overall structural strength of the connection between the steel-concrete composite column, the reinforced concrete column, and the concrete beam is strengthened, and the force transmission performance is reliable, the structure is simple, and the construction is convenient.

[0034] In summary, the steel-concrete composite column, reinforced concrete column, and concrete beam connection structure of this invention has high overall structural strength, reliable force transmission performance, simple construction, and convenient construction. It meets the connection requirements for steel-concrete composite columns, reinforced concrete columns, and concrete beams, improves the structural strength of the connection, and its simple construction and convenient construction improve construction efficiency and reduce construction costs. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam, comprising a steel pipe (1), a reinforced concrete column (3), and a concrete beam (2) within the steel-concrete composite column, wherein the steel pipe (1), the reinforced concrete column (3), and the concrete beam (2) are intersected and connected, characterized in that, An enlarged end (10) is provided above the reinforced concrete column (3), and a connecting end (13) is provided below the steel pipe (1). The connecting end (13) is inserted into the enlarged end (10). A cross-shaped steel reinforcement section (14) is provided below the connecting end (13). The cross-shaped steel reinforcement section (14) extends into the interior of the reinforced concrete column (3). The concrete beam (2) is connected to the side of the enlarged end (10). A steel bracket (7) is provided inside the connection between the concrete beam (2) and the enlarged end (10). One end of the steel bracket (7) is connected to the steel pipe (1). Several reinforcing hoops (6) are evenly spaced along the vertical direction inside the enlarged end (10). The connecting end (13) is conical, with its diameter gradually decreasing from top to bottom. Both the upper and lower ends of the connecting end (13) are provided with annular stiffening plates (5), and a cross stiffening plate (4) is provided between the annular stiffening plates (5) at the upper and lower ends. The outer side of the steel pipe (1) is connected to the steel bracket (7) at the connection point, and an annular outer stiffening plate (17) is provided on the upper and lower flanges of the steel bracket (7). The annular outer stiffening plate (17) is welded to the upper and lower flanges of the steel bracket (7). Several vertical stiffening plates (9) are evenly spaced between the annular outer stiffening plates (17). The reinforced concrete column (3) has several longitudinal reinforcement bars (12) evenly spaced along the circumference at the inner edge of the column. The longitudinal reinforcement bars (12) extend into the enlarged end (10) and are fixedly connected to the bottom surface of the annular outer stiffening plate (17) by a steel bar connector. Several vertical ribs (11) are provided at the inner edge of the enlarged end (10), and the vertical ribs (11) are welded to the reinforcing hoop (6); The bottom surface of the cross-shaped steel reinforcement section (14) is connected to the annular base plate (15), and several positioning anchor bolts (16) are set below the annular base plate (15).

2. The connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam according to claim 1, characterized in that: The cross-shaped steel reinforcement section (14) has a vertically arranged angled flange (18) at the plane flange of the cross-shaped steel frame.

3. The connection structure between a steel-concrete composite column, a reinforced concrete column, and a concrete beam according to claim 1, characterized in that: The concrete beam (2) has several longitudinal reinforcement bars (8) arranged along the length direction on the upper and lower sides inside. One end of the longitudinal reinforcement bar (8) is welded to the upper and lower flange surfaces of the steel bracket (7).

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