Prefabricated steel building frame

Abstract

The present invention provides a prefabricated and assembled steel structure building frame, comprising a plurality of steel structure units, each of which is a rectangular structure consisting of four columns and four beams. The columns are formed by bending a steel plate, and the four adjacent steel structure units are assembled and connected in the horizontal direction. The four middle columns form a columnar space for pouring concrete, and the columns have vertical openings formed on the side walls of the columnar space. Connecting plates are fixed to the top and bottom ends of the columns, and the connecting plates are provided with bolt holes in the portions extending from the columns. The bolt holes are located at least within the projected surface of the columnar space, and the bolts used to connect the bolt holes of the connecting plates located within the projected surface of the columnar space are extended bolts. The four beams of the steel structure unit have floor slab mounting grooves facing inward. The present invention adopts a method of assembling and connecting multiple steel structure units, and a single steel structure unit is assembled and connected using columns, beams, and connecting plates, which is easy to assemble and disassemble.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure buildings, and in particular relates to a prefabricated assembled steel structure building frame. Background Art

[0002] Prefabricated steel structures are constructed using industrialized production methods. Some or all of the building components are prefabricated in a factory, then transported to the construction site and assembled using reliable connections. The main components of prefabricated steel structures are precast reinforced concrete columns, precast floor slabs, precast spacers, and precast edge beams.

[0003] The Chinese patent document with announcement number CN113653183B discloses an assembled steel structure house building system, which relates to the field of assembled building technology, including main beams, cross beams and top beams. Ground piles are provided on the ground, and a number of fixed sleeves are preset on the ground piles. The main beams and the sleeves correspond one to one, and the main beams are vertically inserted in the corresponding fixed sleeves. A lifting plate is provided above the fixed sleeves, and the lifting plate is sleeved on the main beam, and a number of plug-in plates are fixedly connected to the lifting plate. Each plug-in plate fits the main beam and is inserted in the gap between the main beam and the fixed sleeve. The lifting plate and the fixed sleeve are fixed by a locking assembly. A fixing device for fixing the main beam is provided on the fixed sleeve. The cross beam is provided between two adjacent main beams, and the cross beam and the corresponding main beam are fixed by a limiting device. The top beam is obliquely provided between two adjacent main beams, and the top beam and the corresponding main beam are fixed by a connecting device.

[0004] The shortcomings of the above solution are:

[0005] 1. The columns of this solution (i.e., the main beam 1 in this application) are in the form of closed square tubes. The manufacturing process of this type of column is complicated, thereby increasing the manufacturing cost. In addition, this type of column has the problem of poor processability of the joint and difficulty in ensuring the joint performance.

[0006] 2. This solution only has one vertical column, so the required length of the column will increase the cost of manufacturing and transporting a single column and complicate the installation and assembly process of the entire building.

[0007] 3. The beams of this solution are fixed to the columns through mounting bases and limit devices. The fixed connection method of the mounting bases and limit devices often fails due to structural rust or loose bolts. Therefore, the overall building's load-bearing capacity and seismic resistance are poor. Summary of the Invention

[0008] The present invention aims to solve the above technical problems and provides a prefabricated and assembled steel structure building frame.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A prefabricated and assembled steel structure building frame includes several steel structure units, which are rectangular structures consisting of four columns and four beams; the columns are formed by bending a steel plate, and the four steel structure units are assembled and connected in the horizontal direction, and are adjacent to each other. The four middle columns form a columnar space for pouring concrete, and the columns are provided with vertical openings on the side walls that form the columnar space; connecting plates are fixed at the top and bottom ends of the columns, and bolt holes are provided in the parts of the connecting plates that extend out of the columns. The bolt holes are at least located within the projection surface of the columnar space, and the bolts used to connect the bolt holes of the connecting plates located within the projection surface of the columnar space are extended bolts; the four beams of the steel structure unit have floor mounting grooves facing inward.

[0011] As a preferred technical solution, the side wall of the column is bent into an arc shape, so that the columnar space is cylindrical.

[0012] As a preferred technical solution, the connecting plate has a beam support portion extending from the column, the connecting plate is L-shaped, and the beam is supported on the beam support portion.

[0013] As a preferred technical solution, the column is provided with cut corners on both sides of the vertical opening, so that the opening angle of the vertical opening is greater than 90°.

[0014] As a preferred technical solution, a reinforcement plate is provided at the connecting corner between the lower end of the connecting plate and the column.

[0015] After adopting the above technical solution, the present invention has the following advantages:

[0016] 1. The prefabricated and assembled steel structure building frame of the present invention has columns made of bent steel plates with vertical openings, which is conducive to confining concrete, maximizing cross-sectional efficiency, and optimizing cross-sectional rigidity.

[0017] 2. The prefabricated and assembled steel structure building frame of the present invention adopts a method of assembling and connecting multiple steel structure units, and a single steel structure unit is assembled and connected by columns, beams, and connecting plates, which is easy to assemble and disassemble.

[0018] 3. When the connecting plate has a beam support portion extending from the column, the supporting force of the connecting plate on the beam is transmitted to the column, concrete, and extension bolts, and the stress is dispersed through the concrete. In this structure, the connecting plate is not easily damaged and has strong supporting force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the prefabricated steel structure building frame of Example 1;

[0020] Figure 2This is a schematic structural diagram of the steel structure unit of Example 1;

[0021] Figure 3 Schematic diagram of the connection structure of the columns, beams and connecting plates of Example 1;

[0022] Figure 4 This is a schematic structural diagram of the columns and connecting plates of Example 1;

[0023] Figure 5 for Figure 4 A partial enlarged view of the cut corner at point A;

[0024] Figure 6 It is a schematic diagram of the assembly connection structure of four adjacent columns;

[0025] Figure 7 This is a schematic structural diagram of the prefabricated steel structure building frame of Example 2;

[0026] Figure 8 This is a schematic structural diagram of the steel structure unit of Example 2;

[0027] In the picture:

[0028] 1- Column; 2- Beam; 3- Columnar space; 4- Vertical opening; 5- Connecting plate; 6- Extension bolt. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, the prefabricated assembled steel structure building frame includes a plurality of steel structure units, which are assembled and connected in the horizontal and vertical directions.

[0032] like Figure 2 As shown, the steel structure unit is a rectangular structure consisting of four columns 1 and four beams 2.

[0033] like Figure 3 、 Figure 4 、 Figure 6 As shown, a single column 1 is formed by bending a steel plate. Four adjacent steel structural units are assembled and connected horizontally. The four columns 1 in the middle form a columnar space 3 for concrete filling. Vertical openings 4 are formed in the side walls of the columns that enclose the columnar space 3.

[0034] In this embodiment, the cross-sectional shape of the column 1 is , that is, the bending angles of the steel plates are 135°, 90°, 135°, 135°, 90°, and 135°, respectively. In this embodiment, the columnar space 3 is in the shape of a regular quadrangular prism. It should be understood that the side wall of the column 1 can also be bent into an arc, so that the columnar space 3 is cylindrical. Under the same volume, the cylindrical columnar space 3 has a larger contact area with the column 1 than the regular quadrangular prism columnar space 3. It should be understood that the cross-sectional shape of the column 1 can be of various shapes: 、 、 wait.

[0035] Concrete is poured into the columnar space 3, and the concrete filling speed is controlled so that the concrete in the columnar space 2 flows into the interior of the column 1 through the vertical opening 4, so that the concrete in the four columns 1 and the concrete in the columnar space 3 are formed into one piece. In particular, Figure 4 、 Figure 5 As shown, the column 1 has cut corners on both sides of the vertical opening 4, so that the opening angle of the vertical opening 4 is greater than 90 degrees. This structure guides the concrete in the columnar space 3, allowing the concrete in the columnar space 3 to flow into the interior of the column 1.

[0036] Connecting plates 5 are provided at the top and bottom ends of the column 1. Bolt holes are provided on the portion of the connecting plate 5 extending out from the column 1, and the bolt holes are at least located within the projection surface of the columnar space 3. The bolts used to connect the bolt holes of the connecting plate 5 located within the projection surface of the columnar space 3 are extended bolts 6, which are vertically embedded in the columnar space 3. The four groups of extended bolts 6 of the four columns 1 play a role of horizontal tensioning. The connecting plate 5 is fixedly connected to the column 1 by welding. It should be noted that in the accompanying drawings, only one bolt hole is drawn for each connecting plate 5 located within the projection surface of the columnar space 3, and in actual applications, there are generally multiple bolt holes there.

[0037] The installation method of the column 1 is as follows: after the column 1 and the connecting plate 5 at the bottom are welded, the column 1 is installed and the connecting plates 5 of the upper and lower columns are connected by bolts, and then concrete is poured. When the concrete is not solidified, the connecting plate 5 at the top of the column is welded and the extension bolts 6 are installed.

[0038] The four cross beams 2 of the steel structure unit have floor mounting grooves facing inwards, and the four sides of the floor are respectively inserted into the floor mounting grooves of the four cross beams so that the four cross beams 2 play the role of supporting the floor. In this embodiment, the cross-sectional shape of the cross beam 2 is It should be understood that the cross-sectional shape of the beam 2 can also be , I-shaped, etc. The crossbeam 2 is fixed to the column 1 by welding.

[0039] Example 2

[0040] like Figure 7、 Figure 8 As shown, the prefabricated and assembled steel structure building frame differs from Example 1 in that the connecting plate 5 of Example 2 has a crossbeam support portion extending relative to the column 1, and the connecting plate is L-shaped. The ends of the crossbeam 2 are supported on the crossbeam support portions of the two connecting plates 5. Example 2 limits the installation position of the crossbeam 2, but greatly increases the overall support strength of the crossbeam 2. Reinforcement plates can be installed at the corners where the lower ends of the connecting plates 5 connect to the columns 1 to further strengthen the support function of the connecting plates 5.

[0041] In the structural arrangement of Example 2, the supporting force of the connecting plate 5 on the beam 2 is transmitted to the column 1, the concrete and the extension bolt 6, and the stress is dispersed through the concrete. In this structure, the connecting plate 5 is not easily damaged and has a strong supporting force.

[0042] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not depart from the spirit of the present invention, they should all fall within the scope defined by the claims attached to the present invention.

Claims

1. Prefabricated steel structure building frame, characterized by: The steel structure unit comprises a plurality of steel structure units, each of which is a rectangular structure consisting of four columns and four beams; the columns are formed by bending a steel plate, and the four steel structure units are connected in the horizontal direction and are adjacent to each other, wherein the four middle columns form a columnar space for pouring concrete, and the columns are provided with vertical openings on the side walls of the columnar space, and the concrete pouring speed is controlled so that the concrete in the columnar space flows into the interior of the columns through the vertical openings, so that the concrete in the four columns and the concrete in the columnar space are formed as one piece; connecting plates are fixedly provided at the top and bottom ends of the columns, and bolt holes are provided in the portion of the connecting plates extending out of the columns, and the bolt holes are at least located within the projection surface of the columnar space, and the bolts used to connect the bolt holes of the connecting plates located within the projection surface of the columnar space are extended bolts; the four beams of the steel structure unit have floor slab mounting grooves facing inward; The connecting plate has a beam support portion extending from the column, the connecting plate is L-shaped, and the beam is supported on the beam support portion; The column is provided with cut corners on both sides of the vertical opening, so that the opening angle of the vertical opening is greater than 90°.

2. The prefabricated steel structure building frame according to claim 1, characterized in that: The side wall of the column is bent into an arc shape, so that the columnar space is cylindrical.

3. The prefabricated steel structure building frame according to claim 1, characterized in that: A reinforcement plate is provided at the connection corner between the lower end of the connecting plate and the column.

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