End plate lap step steel structure column with overhanging upper portion

Abstract

The utility model discloses an end plate lap step steel structure column with an overhanging upper part, which increases the connection contact area with a steel column and a steel beam through the structural design on the premise of not influencing the universality and adaptability of a steel column connection node, and solves the problems caused by too small contact area. The transverse lap joint column is of an assembly type frame structure, one end of the transverse lap joint column is welded and fixed to the connecting joint body, the end face and the top face of the transverse lap joint column are each provided with a plurality of first connecting holes and second connecting holes which are used for being connected with steel beams, and the upper end plate is vertically arranged on the transverse lap joint column. The upper end face of the upper end plate is higher than the upper end face of the column flange plate, the upper end plate and the connecting joint body are connected together through a T-shaped connecting plate, and a plurality of third connecting holes in the same direction as the first connecting holes are formed in the upper end plate. The utility model can be widely applied to the field of fabricated buildings.

Description

Technical Field

[0001] The utility model relates to an upper outrigger end - plate stepped steel column, belonging to the technical field of prefabricated buildings. Background Technique

[0002] The design of prefabricated buildings adopts standardized and modular methods, which is convenient for large - scale production and construction. Although the initial investment may be relatively high, in the long run, it has good economic efficiency due to advantages such as fast construction speed and low maintenance cost, promoting the transformation of the construction industry towards industrialization and informatization, and improving the overall technical level and production efficiency of the construction industry. Prefabricated buildings use prefabricated processing, with components prefabricated in the factory, and quality control is more stringent, reducing the uncertainty of on - site construction. Only assembly is required on - site, greatly shortening the construction period, reducing the noise, dust, and construction waste generated during on - site construction. Moreover, prefabricated components reduce material waste and improve the utilization rate of materials. Since a large amount of work is completed in the factory, the labor required for on - site construction is reduced.

[0003] Steel has high strength and toughness, can bear greater loads, is suitable for large - span and high - rise buildings, and can better withstand the impact of natural disasters such as earthquakes. Steel columns can provide a larger column - free space, improving the flexibility of building use.

[0004] Steel columns are connected through joints, and at the same time, this connection joint also serves as the connection joint between the steel column and the steel beam. Therefore, the structure of this connection joint plays a crucial role in the connection process of steel columns and steel beams.

[0005] At present, beam - column joints are used in prefabricated steel structures. Adopting this connection method has many advantages such as high assembly degree, fast construction speed, and high safety. When using this connection joint, during the installation of the steel frame, the crane assembles the steel beam on the outrigger step of the steel column, and the construction workers insert bolts into the corresponding positions, then the installation operation of the crane can be released, greatly improving the installation efficiency of the crane. However, it is found during use that the connection contact area between the steel column and the steel beam is relatively small, which may lead to insufficient stiffness and bearing capacity of the beam - column joint, unable to effectively transfer loads, affecting the stability and safety of the entire structure. At the same time, the small contact area will cause stress concentration, increasing the local stress of the connecting parts or materials, and the joint deformation is relatively large, thus increasing the risk of failure. In addition, insufficient contact area will also affect the durability and service life of the connection, especially in the case of repeated or dynamic loads, and the small contact area may make the installation of the connecting parts more difficult, requiring higher construction precision and technical requirements. Content of the Utility Model

[0006] The utility model overcomes the deficiencies of the prior art and provides an upper-outrigger end-plate stepped steel structure column. Without affecting the generality and adaptability of the steel column connection nodes, through structural design, the connection contact area with the steel column and the steel beam is increased, and the problems caused by too small contact area and the construction assembly speed are solved.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is as follows: An upper-outrigger end-plate stepped steel structure column includes a connection node body, the connection node body is an assembled frame structure, column flange plates are arranged at both the upper and lower ends of the connection node body, steel column connection holes for connecting steel columns are arranged on the column flange plates, and an end-plate lapping unit is further arranged outside the connection node body, and the end-plate lapping unit is used for connecting with a steel beam;

[0008] The structure of the end-plate lapping unit is as follows: It includes a transverse lapping column and an upper end-plate. The transverse lapping column is an assembled frame structure, and one end of the transverse lapping column is welded and fixed to the connection node body. A plurality of first connection holes and second connection holes for connecting the steel beam are arranged on the end face and the top face of the transverse lapping column. The upper end-plate is vertically arranged on the transverse lapping column, and the upper end face of the upper end-plate is higher than the upper end face of the column flange plate. The upper end-plate and the connection node body are connected together through a T-shaped connecting plate. A plurality of third connection holes in the same direction as the first connection holes are arranged on the upper end-plate.

[0009] Further, the apertures of the first connection holes and the third connection holes are larger than the aperture of the second connection hole.

[0010] Further, the structure of the transverse lapping column is as follows: It includes a vertical plate, a stiffening plate, an upper horizontal supporting plate, a lower horizontal supporting plate and a lower end-plate. The vertical plate is horizontally welded and fixed to the connection node body. The upper horizontal supporting plate and the lower horizontal supporting plate are horizontally welded and fixed to the upper and lower ends of the vertical plate respectively. The second connection holes are arranged on the upper horizontal supporting plate. The lower end-plate is arranged at the end of the upper horizontal supporting plate and the lower horizontal supporting plate away from the connection node body. The first connection holes are arranged on the lower end-plate. The stiffening plates are vertically arranged on both sides of the vertical plate, and the stiffening plates are located directly below the upper end-plate.

[0011] Further, the distribution form of the end-plate lapping unit outside the connection node body is either T-shaped, or cross-shaped, or L-shaped, or linear.

[0012] Further, the number of both the first connection holes and the third connection holes is four, and the number of the second connection holes is six.

[0013] Further, a gap is left between the upper end-plate and the edge of the column flange plate.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows: By widening the gap between the upper end plate and the column flange plate, the area of the column flange plate is effectively increased. At the same time, the areas of the upper horizontal support plate and the upper end plate are increased, resulting in an enlarged connection contact area with the steel column and the steel beam, thus solving the problems caused by too small contact area. According to the actual installation position, the distribution form of the end plate lapping unit outside the connection node body may be T-shaped, cross-shaped, L-shaped, or linear, meeting different usage requirements and improving the flexibility of the installation of the steel column and the steel beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model with reference to the drawings.

[0016] Figure 1 It is a structural schematic diagram of the present utility model, that is, a structural schematic diagram of the end plate lapping unit in a T-shaped distribution in the present utility model.

[0017] Figure 2 It is a connection schematic diagram of the present utility model with the steel column and the steel beam.

[0018] Figure 3 It is a connection schematic diagram of the present utility model with multiple steel columns.

[0019] Figure 4 It is a structural schematic diagram of the end plate lapping unit in a cross-shaped distribution in the present utility model.

[0020] Figure 5 It is a structural schematic diagram of the end plate lapping unit in an L-shaped distribution in the present utility model.

[0021] Figure 6 It is a structural schematic diagram of the end plate lapping unit in a linear distribution in the present utility model.

[0022] In the figure: 1, connection node body; 2, column flange plate; 3, steel column; 4, steel column connection hole; 5, end plate lapping unit;

[0023] 51, horizontal lapping column; 511, vertical plate; 512, stiffening plate; 513, upper horizontal support plate; 514, lower horizontal support plate; 515, lower end plate; 52, upper end plate; 53, first connection hole; 54, second connection hole; 55, T-shaped connection plate; 56, third connection hole; 6, steel beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further elaborates the present utility model with reference to specific embodiments.

[0025] As Figures 1 to 6As shown in the figure, a steel structure column with an upper-extended end plate step of the present utility model includes a connection node body 1. The connection node body 1 is an assembled frame structure. Column flange plates 2 are provided at both the upper and lower ends of the connection node body 1. Steel column connection holes 4 for connecting a steel column 3 are provided on the column flange plates 2. It further includes an end plate lapping unit 5 arranged outside the connection node body 1, and the end plate lapping unit 5 is used to connect with a steel beam 6. The distribution form of the end plate lapping unit 5 outside the connection node body 1 is either T-shaped, or cross-shaped, or L-shaped, or linear. The structure of the end plate lapping unit 5 is as follows: it includes a transverse lapping column 51 and an upper end plate 52. The transverse lapping column 51 is an assembled frame structure, and one end of the transverse lapping column 51 is welded and fixed to the connection node body 1. A plurality of first connection holes 53 and second connection holes 54 for connecting the steel beam 6 are provided on the end face and the top surface of the transverse lapping column 51. The upper end plate 52 is vertically arranged on the transverse lapping column 51. The upper end face of the upper end plate 52 is higher than the upper end face of the column flange plate 2. The upper end plate 52 and the connection node body 1 are connected together through a T-shaped connecting plate 55, and a gap is left between the upper end plate 52 and the edge of the column flange plate 2 to ensure that the size of the column flange plate 2 is sufficient to meet the construction requirements. A plurality of third connection holes 56 in the same direction as the first connection holes 53 are provided on the upper end plate 52. The apertures of the first connection holes 53 and the third connection holes 56 are larger than the aperture of the second connection hole 54. By increasing the aperture, bolt connections of larger sizes are satisfied. Among them, the number of both the first connection holes 53 and the third connection holes 56 is four, and the number of the second connection holes 54 is six.

[0026] The structure of the transverse lapping column 51 is as follows: it includes a vertical plate 511, a stiffening plate 512, an upper horizontal supporting plate 513, a lower horizontal supporting plate 514, and a lower end plate 515. The vertical plate 511 is horizontally welded and fixed to the connection node body 1. The upper horizontal supporting plate 513 and the lower horizontal supporting plate 514 are horizontally welded and fixed to the upper and lower ends of the vertical plate 511 respectively. The second connection holes 54 are provided on the upper horizontal supporting plate 513. The lower end plate 515 is arranged at the ends of the upper horizontal supporting plate 513 and the lower horizontal supporting plate 514 away from the connection node body 1. The first connection holes 53 are provided on the lower end plate 515. The stiffening plates 512 are vertically arranged on both sides of the vertical plate 511, and the stiffening plates 512 are located directly below the upper end plate 52.

[0027] The utility model effectively increases the area of the column flange plate 2 by pulling apart the gap between the upper end plate 52 and the column flange plate 2. At the same time, the areas of the upper horizontal support plate 513 and the upper end plate 52 are increased, so that the connection contact area with the steel column and the steel beam is increased, and the problems caused by too small contact area are solved. According to the actual installation position, the distribution form of the end plate lapping unit 5 outside the connection node body 1 may be T-shaped, cross-shaped, L-shaped, or straight-shaped, meeting different use requirements and improving the flexibility of the installation of the steel column and the steel beam.

[0028] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the purpose of the present utility model.

Claims

1. An upper extended end plate stepped steel structure column, comprising a connection node body (1), the connection node body (1) being an assembled frame structure, the upper and lower ends of the connection node body (1) being provided with column flange plates (2), the column flange plates (2) being provided with steel column connection holes (4) for connecting steel columns (3), characterized in that: It also includes an end plate overlapping unit (5) arranged outside the connection node body (1), and the end plate overlapping unit (5) is used to be connected to the steel beam (6); The structure of the end plate lap unit (5) is as follows: it includes a transverse lap column (51) and an upper end plate (52); the transverse lap column (51) is an assembled frame structure, and one end of the transverse lap column (51) is welded and fixed on the connection node body (1); the end surface and the top surface of the transverse lap column (51) are both provided with a plurality of first connection holes (53) and second connection holes (54) for connecting the steel beam (6); the upper end plate (52) is vertically arranged on the transverse lap column (51); the upper end surface of the upper end plate (52) is higher than the upper end surface of the column flange plate (2); the upper end plate (52) and the connection node body (1) are connected together via a T-shaped connection plate (55); and the upper end plate (52) is provided with a plurality of third connection holes (56) in the same direction as the first connection holes (53).

2. The upper extended end plate stepped steel structure column according to claim 1, characterized in that: The diameters of the first connection hole (53) and the third connection hole (56) are greater than the diameter of the second connection hole (54).

3. The upper extended end plate stepped steel structure column according to claim 1 or 2, characterized in that: The structure of the transverse lap column (51) is as follows: it includes a vertical plate (511), a stiffening plate (512), an upper horizontal support plate (513), a lower horizontal support plate (514) and a lower end plate (515); the vertical plate (511) is horizontally welded and fixed to the connection node body (1); the upper and lower ends of the vertical plate (511) are horizontally welded and fixed with the upper horizontal support plate (513) and the lower horizontal support plate (514); the second connection hole (54) is arranged on the upper horizontal support plate (513); the lower end plate (515) is arranged at the ends of the upper horizontal support plate (513) and the lower horizontal support plate (514) away from the connection node body (1); the first connection hole (53) is arranged on the lower end plate (515); the stiffening plate (512) is vertically arranged on both sides of the vertical plate (511), and the stiffening plate (512) is located directly below the upper end plate (52).

4. The upper extended end plate stepped steel structure column according to claim 3, characterized in that: The distribution form of the end plate overlapping units (5) outside the connection node body (1) is either T-shaped, cross-shaped, L-shaped, or straight-shaped.

5. The upper extended end plate stepped steel structure column according to claim 4, characterized in that: The number of the first connection holes (53) and the number of the third connection holes (56) are both four, and the number of the second connection holes (54) is six.

6. The upper extended end plate stepped steel structure column according to claim 5, characterized in that: A gap is left between the upper end plate (52) and the edge of the column flange plate (2).

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