Beam-to-column joint structure of a concrete-filled steel tubular column

Abstract

The utility model discloses a beam -column joint structure of steel pipe concrete column, including steel pipe concrete column, steel pipe concrete column includes the first steel pipe concrete column and second steel pipe concrete column of vertical setting, the connecting piece between first steel pipe concrete column and second steel pipe concrete column, the connecting piece includes the upper connecting plate of the first steel pipe concrete column outside and the lower connecting plate of setting between first steel pipe concrete column and second steel pipe concrete column, the outside of connecting piece is equipped with H type steel beam. The utility model discloses through setting up upper connecting plate and lower connecting plate and connect steel pipe concrete column with steel beam, the setting of upper and lower connecting plate can effectively strengthen steel structure node intensity, improve structural stability and anti -seismic performance, through the connecting mode of lower connecting plate and steel column, can avoid the node board to protrude to the room, influence residential indoor use space, and set up the pouring hole in the lower connecting plate, do not influence steel pipe concrete pouring, improve construction quality.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of steel structure connection technology. Specifically, it relates to a beam-column joint structure for a steel-concrete composite column. Background Technology

[0002] Traditional methods for rigidly connecting steel beams and steel tubular columns include full welding, high-strength bolt connections, and bolted-welded hybrid connections. Full welding is suitable for factory fabrication but less suitable for on-site connections; high-strength bolt connections use too many bolts, increasing construction costs. Currently, most on-site connections use a bolted-welded hybrid method. According to the "Steel Structure Design Standard" (GB 50017-2017), the joint construction for bolted-welded hybrid connections between steel beams and steel tubular concrete columns generally uses an outer ring plate joint or an inner diaphragm plate joint.

[0003] For residential buildings, the usable floor area is crucial to the residents' experience. To increase the usable area, the design aims to minimize the cross-section of steel-concrete composite columns, concealing them within the building walls or minimizing their footprint. However, the recommended joint construction methods are not suitable for smaller steel-concrete composite columns. External diaphragm type columns protrude into the interior, affecting the residents' experience, while internal diaphragm type columns may affect the quality of the concrete pouring inside the column and increase construction difficulty. Therefore, a new type of steel structure beam-column joint is urgently needed to solve these problems.

[0004] In existing technologies, a variable cross-section column is used on the side of the steel pipe column corresponding to the steel beam. The dimension of the side of the variable cross-section column connected to the steel pipe column is larger than the dimension of the other side of the variable cross-section column, which solves the problem of difficult construction of stiffening plates caused by the small size of the steel pipe column. However, when there are no walls around the steel pipe column or only one wall, the variable cross-section column will protrude into the room, affecting its use. In addition, the variable cross-section column is difficult to connect with the masonry wall, increasing the construction difficulty of the masonry wall. Therefore, a new beam-column-wall joint structure for steel-concrete composite columns is designed to solve this problem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a beam-column joint structure for steel-concrete composite columns.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: The present utility model discloses a beam-column joint structure for a concrete-filled steel tube column, comprising a concrete-filled steel tube column. The concrete-filled steel tube column includes a first concrete-filled steel tube column and a second concrete-filled steel tube column arranged vertically, and a connecting member between the first concrete-filled steel tube column and the second concrete-filled steel tube column. The connecting member includes an upper connection plate sleeved outside the first concrete-filled steel tube column, and a lower connection plate disposed between the first concrete-filled steel tube column and the second concrete-filled steel tube column. An H-shaped steel beam is arranged on the outer side of the connecting member.

[0007] Preferably, the lower connection plate transversely passes through the concrete-filled steel tube column to divide the concrete-filled steel tube column into the first concrete-filled steel tube column and the second concrete-filled steel tube column. The upper connection plate is designed in a "loop" shape, and the first concrete-filled steel tube column penetrates through the upper connection plate.

[0008] Preferably, the upper surface of the upper connection plate and the upper flange of the H-shaped steel beam are located on the same horizontal plane, the lower connection plate and the lower flange of the H-shaped steel beam are located on the same horizontal plane, and both the upper connection plate and the lower connection plate are connected to the H-shaped steel beam by welds.

[0009] Preferably, the outward extension widths of the upper connection plate and the lower connection plate are the same, and the thickness of the upper connection plate and the lower connection plate is not less than the thickness of the upper and lower flanges of the H-shaped steel beam, and not less than the thickness of the wall plate of the concrete-filled steel tube column.

[0010] Preferably, a vertical connection plate is disposed between the upper connection plate and the lower connection plate, and the side surfaces of the vertical connection plate are connected with the concrete-filled steel tube column, the upper connection plate and the lower connection plate through full penetration welds.

[0011] Preferably, a web connection plate is disposed between the vertical connection plate and the web of the H-shaped steel beam, and the ends of the vertical connection plate and the web connection plate are arranged in parallel.

[0012] Preferably, the surface of the web connection plate is provided with connection holes that are mutually matched with the web of the H-shaped steel beam and the vertical connection plate, and are connected by high-strength bolts.

[0013] Preferably, an oblong pouring hole and a plurality of vent holes are formed inside the lower connection plate.

[0014] Preferably, self-compacting concrete is poured into the concrete-filled steel tube column.

[0015] Compared with the prior art, the present utility model has the following beneficial effects: (1) According to the present utility model, the concrete-filled steel tube column and the steel beam are connected by arranging the upper connection plate and the lower connection plate. The arrangement of the upper and lower connection plates can effectively enhance the strength of the steel structure joint, and improve the structural stability and seismic performance.

[0016] (2) The present invention can avoid the node plate protruding into the room and affecting the indoor space of the residence by connecting the lower connecting plate to the steel column. The lower connecting plate is provided with a grouting hole, which does not affect the steel pipe concrete pouring and improves the construction quality. The connection between the upper connecting plate and the steel column is simple and can be processed in the factory and directly constructed on site, which improves the construction efficiency and saves the installation time.

[0017] (3) The steel beam and steel pipe concrete column of this utility model adopt this node form, and narrow cross section steel beam and steel pipe concrete column can be used. The beam and column can be hidden in the wall, without occupying indoor space and improving the utilization rate of the house.

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the planar structure of this utility model; Figure 3 This is a cross-sectional view of the planar structure of this utility model along the AA direction. Figure 4 This is a cross-sectional view of the planar structure of this utility model along the BB direction. Figure 5 This is a cross-sectional view of the planar structure of this utility model along the CC direction. In the figure: 1. First concrete-filled steel tube column; 2. Second concrete-filled steel tube column; 3. H-shaped steel beam; 4. Upper connection plate; 5. Lower connection plate; 6. Vertical connection plate; 7. Web connection plate; 8. High-strength bolt; 9a. Vent hole; 9b. Oblong grouting hole. DETAILED DESCRIPTION OF EMBODIMENTS

[0021] As shown in Figure 1-5 the drawings, the present utility model provides a beam-column joint structure for concrete-filled steel tube columns, comprising concrete-filled steel tube columns, the concrete-filled steel tube columns including a first concrete-filled steel tube column 1 and a second concrete-filled steel tube column 2 arranged vertically, and a connecting member between the first concrete-filled steel tube column 1 and the second concrete-filled steel tube column 2. The connecting member includes an upper connection plate 4 sleeved outside the first concrete-filled steel tube column 1, and a lower connection plate 5 arranged between the first concrete-filled steel tube column 1 and the second concrete-filled steel tube column 2. An H-shaped steel beam 3 is disposed on the outer side of the connecting member.

[0022] Further, in this embodiment, the lower connection plate 5 transversely penetrates through the concrete-filled steel tube column to divide the concrete-filled steel tube column into the first concrete-filled steel tube column 1 and the second concrete-filled steel tube column 2. The upper connection plate 4 is designed in a "loop" shape, the first concrete-filled steel tube column 1 penetrates through the upper connection plate 4 and is connected to the lower connection plate 5, and the concrete-filled steel tube column is divided into two parts and connected through the lower connection plate 5.

[0023] In this embodiment, the upper surface of the upper connection plate 4 and the upper flange of the H-shaped steel beam 3 are located on the same horizontal plane, the lower connection plate 5 and the lower flange of the H-shaped steel beam 3 are located on the same horizontal plane, the end of the lower connection plate 5 is chamfered and transitioned to the same width as the flange of the H-shaped steel beam 3, and both the upper connection plate 4 and the lower connection plate 5 are connected to the H-shaped steel beam 3 by welds. The H-shaped steel beam 3 and the concrete-filled steel tube column are connected together through the upper and lower connection plates 5, so as to enhance the strength of the connection joint between the beam and the column.

[0024] In this embodiment, the outward extending widths of the upper connection plate 4 and the lower connection plate 5 are the same, and the thicknesses of the upper connection plate 4 and the lower connection plate 5 are not less than the thicknesses of the upper and lower flanges of the H-shaped steel beam 3, and not less than the thickness of the wall plate of the concrete-filled steel tube column.

[0025] In this embodiment, a vertical connection plate 6 is disposed between the upper connection plate 4 and the lower connection plate 5. The side surface of the vertical connection plate 6 is connected to the concrete-filled steel tube column, the upper connection plate 4 and the lower connection plate 5 through full penetration welds, and the strength between the upper and lower connection plates 5 is enhanced by the arranged vertical connection plate 6.

[0026] In this embodiment, a web connection plate 7 is disposed between the vertical connection plate 6 and the web of the H-shaped steel beam 3, the ends of the vertical connection plate 6 and the web connection plate 7 are arranged in parallel, and the vertical connection plate 6 and the web of the H-shaped steel beam 3 are clamped at the same time through the web connection plate 7.

[0027] In this embodiment, the surface of the web plate connecting plate 7 is provided with connecting holes that cooperate with the web of the H-beam 3 and the vertical connecting plate 6, and is connected by high-strength bolts 8. The web plate connecting plate 7 is installed on the web of the H-beam 3 and the vertical connecting plate 6 by the high-strength bolts 8, thereby realizing the connection between the H-beam 3 and the vertical connecting plate 6.

[0028] In this embodiment, the lower connecting plate 5 has an elongated oval injection hole 9b and several ventilation holes 9a inside. The elongated oval injection hole 9b and ventilation holes 9a are pre-opened on the lower connecting plate 5. After the beam and column are connected, concrete can be injected through the holes.

[0029] In this embodiment, self-compacting concrete is poured into the steel-concrete composite column.

[0030] Specifically, when connecting steel-concrete composite columns and steel beams, the first steel-concrete composite column 1, the second steel-concrete composite column 2, the H-beam 3, the upper connecting plate 4, the lower connecting plate 5, the vertical connecting plate 6, the web connecting plate 7, and other components are all processed in the factory according to the design dimensions and pre-assembled and inspected to ensure that the dimensional accuracy and fit are correct before being transported to the construction site. During assembly, the first steel-concrete composite column 1 is vertically hoisted into place as the upper column segment, and then the second steel-concrete composite column 2 is hoisted as the lower column segment. Ensure that the two column segments are vertically aligned and initially fixed. The upper connecting plate 4 is then fitted onto the first steel-concrete composite column 1 from top to bottom and adjusted to the design elevation so that its upper surface is flush with the upper flange of the H-beam 3 to be installed laterally. The lower connecting plate 5 is then horizontally passed through the junction area of ​​the two column segments and precisely positioned so that its lower surface is flush with the lower flange of the H-beam 3. The lower connecting plate 5 connects the two column segments into a whole at the node. The upper connecting plate 4 is firmly welded to the outer wall of the first steel pipe concrete column 1 and the lower connecting plate 5 is firmly welded to the junction of the two column sections using full penetration welds to form a rigid transition. The H-beam 3 is hoisted to the design position and adjusted so that the upper flange of the H-beam 3 is flush with the upper surface of the upper connecting plate 4 and the lower flange is flush with the lower surface of the lower connecting plate 5. It is confirmed that the beam end is in close contact with the connecting plate. The upper flange is connected to the upper connecting plate 4 using full penetration welds, and the lower flange is connected to the lower connecting plate 5 using full penetration welds to ensure equal strength connection. A vertical connecting plate 6 is inserted between the upper and lower connecting plates 5. The position is adjusted so that its side simultaneously fits the outer wall of the steel tube concrete column, the upper connecting plate 4, and the lower connecting plate 5. The vertical connecting plate 6 is welded to the three with a full penetration weld to form a vertical stiffening, which improves the shear strength and stability of the joint. The two web connecting plates 7 are placed on both sides of the web of the H-beam 3 at the junction with the vertical connecting plate 6, so that the ends of the web connecting plates 7 are parallel and tightly fitted to the vertical connecting plate 6. High-strength bolts 8 are inserted into the corresponding positions of the web connecting plates 7, the beam web, and the vertical connecting plate 6. Pre-tightening force is applied according to the specifications to complete the friction-type high-strength bolt connection, so as to realize reliable force transmission between the beam web and the vertical stiffening plate. The grouting pipe extends from the top of the first steel-concrete column 1 through the pre-drilled elongated grouting hole 9b on the lower connecting plate 5, and self-compacting concrete is injected into the two sections of the steel-concrete column. The vent hole 9a ensures smooth air release and prevents voids. After grouting to the design height, it is cured until the strength meets the standard. Inspect the appearance of all welds, verify the torque value of high-strength bolts, measure the elevation, verticality and beam end displacement of nodes, and confirm that the strength, stiffness and sealing of nodes meet the design requirements. After that, the acceptance is completed and the subsequent floor slab and structural construction can begin.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A beam-column joint structure for a steel-concrete composite column, characterized in that, comprising a concrete-filled steel tube column, wherein the concrete-filled steel tube column comprises a first concrete-filled steel tube column (1) and a second concrete-filled steel tube column (2) arranged vertically, and a connecting member between the first concrete-filled steel tube column (1) and the second concrete-filled steel tube column (2). The connecting member comprises an upper connection plate (4) sleeved outside the first concrete-filled steel tube column (1), and a lower connection plate (5) arranged between the first concrete-filled steel tube column (1) and the second concrete-filled steel tube column (2). An H-shaped steel beam (3) is arranged on the outer side of the connecting member.

2. The beam-column joint structure of a steel-concrete composite column according to claim 1, characterized in that, The lower connection plate (5) transversely penetrates through the concrete-filled steel tube column, and divides the concrete-filled steel tube column into the first concrete-filled steel tube column (1) and the second concrete-filled steel tube column (2). The upper connection plate (4) is designed in a hollow square shape, and the first concrete-filled steel tube column (1) penetrates through the upper connection plate (4).

3. The beam-column joint structure of a steel-concrete composite column according to claim 2, characterized in that, The upper surface of the upper connection plate (4) and the upper flange of the H-shaped steel beam (3) are located on the same horizontal plane, the lower connection plate (5) and the lower flange of the H-shaped steel beam (3) are located on the same horizontal plane, and both the upper connection plate (4) and the lower connection plate (5) are connected to the H-shaped steel beam (3) by welding seams.

4. The beam-column joint structure of a steel-concrete composite column according to claim 3, characterized in that, The outward extending widths of the upper connection plate (4) and the lower connection plate (5) are consistent, and the thicknesses of the upper connection plate (4) and the lower connection plate (5) are not less than the thicknesses of the upper and lower flanges of the H-shaped steel beam (3), and not less than the thickness of the wall plate of the concrete-filled steel tube column.

5. The beam-column joint structure of a steel-concrete composite column according to claim 4, characterized in that, A vertical connection plate (6) is arranged between the upper connection plate (4) and the lower connection plate (5), and the side surface of the vertical connection plate (6) is connected with the concrete-filled steel tube column, the upper connection plate (4) and the lower connection plate (5) through full penetration welding seams.

6. The beam-column joint structure of a steel-concrete composite column according to claim 5, characterized in that, A web connection plate (7) is arranged between the vertical connection plate (6) and the web of the H-shaped steel beam (3), and the ends of the vertical connection plate (6) and the web connection plate (7) are arranged in parallel.

7. The beam-column joint structure of a steel-concrete composite column according to claim 6, characterized in that, The surface of the web connection plate (7) is provided with connection holes that are mutually matched with the web of the H-shaped steel beam (3) and the vertical connection plate (6), and they are connected by high-strength bolts (8).

8. The beam-column joint structure of a steel-concrete composite column according to claim 7, characterized in that, An oblong grouting hole (9b) and a plurality of vent holes (9a) are opened inside the lower connection plate (5).

9. The beam-column joint structure of a steel-concrete composite column according to claim 8, characterized in that, Self-compacting concrete is poured into the concrete-filled steel tube column.

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