A building construction steel frame
The retractable steel column design solves the problems of transporting long steel columns and welding them on the construction site, enabling convenient transportation and rapid installation, and ensuring construction efficiency and quality.
Patent Information
- Application Number
- CN202521685711.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-08
AI Technical Summary
For steel frames of buildings with high requirements, there is a contradiction between transporting long steel columns and welding them on the construction site, which affects construction efficiency and quality.
The structure features a retractable steel column design, consisting of an outer steel connecting section and an inner steel connecting section. During transportation, the inner steel connecting section retracts into the outer steel connecting section, while during installation, the inner steel connecting section extends and is fixed by connecting flanges and bolts, forming a stable steel frame structure.
It reduces the footprint during transportation, facilitating transport, and enables rapid and reliable installation on the construction site, thereby improving construction efficiency and quality.
Smart Images

Figure CN224678868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building frame technology, and in particular to a steel frame for building construction. Background Technology
[0002] Compared to traditional concrete buildings, steel structure buildings use steel instead of reinforced concrete, resulting in higher strength and better earthquake resistance. Furthermore, steel components can be factory-fabricated and installed on-site, significantly reducing construction time. Due to the reusability of steel, construction waste is greatly reduced, making it more environmentally friendly, and thus it is widely used in both industrial and civil buildings.
[0003] The steel frame of a building is the core structure of a steel-framed building. During the erection of the steel frame, prefabricated steel components need to be joined at the target locations and then welded or bolted together. However, for steel frames of buildings with certain height requirements, the required steel columns are often quite long. Prefabricating them directly according to the usage requirements would be inconvenient for transporting the steel columns to the construction site. If the steel columns are cut shorter and then welded on-site, it would increase the construction difficulty and affect construction efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a steel frame for building construction to solve the technical problems in the background art.
[0005] This utility model provides a steel frame for building construction, including multiple steel columns, multiple crossbeams connected between the steel columns, and multiple top beams connected between the steel columns. Each steel column includes an outer steel connecting section and an inner steel connecting section, both of which are made of square steel. During transportation, the inner steel connecting section retracts into the outer steel connecting section. During installation, the inner steel connecting section extends out from the outer steel connecting section, with its lower end connected to the upper end of the outer steel connecting section. The crossbeams connect to the lower parts of two adjacent inner steel connecting sections, and the top beams connect to the tops of two adjacent inner steel connecting sections.
[0006] According to the steel frame for building construction provided by this utility model, a first connecting flange is fixedly provided on the upper inner side of the outer steel connecting section, and the first connecting flange is provided with a plurality of first connecting holes; a second connecting flange is fixedly provided on the lower outer side of the inner steel connecting section, and a plurality of first connecting bolts corresponding to the first connecting holes are fixedly provided on the second connecting flange; during installation, the first connecting flange and the second connecting flange are correspondingly fitted so that each first connecting bolt passes through the corresponding first connecting hole and is then tightened by a connecting nut.
[0007] According to the steel frame for building construction provided by this utility model, the crossbeam includes an H-shaped steel body and vertical end plates fixed at both ends of the H-shaped steel body, and the vertical end plates are connected to the inner steel connecting section.
[0008] According to the steel frame for building construction provided by this utility model, a reinforcing rib is fixed between the vertical end plate and the outer side of the flange plate of the H-beam body.
[0009] According to the steel frame for building construction provided by this utility model, both the upper and lower ends of the vertical end plate are connected to the inner steel connecting section by two self-tapping screws.
[0010] According to the steel frame of the building provided by this utility model, the two self-tapping screws are respectively located on the left and right sides of the reinforcing rib plate.
[0011] According to the steel frame for building construction provided by this utility model, a steel pad is also provided between the vertical end plate and the inner steel connecting section.
[0012] According to the steel frame of the building provided by this utility model, a connecting top plate is fixedly provided on the upper outer side of each of the inner steel connecting sections. When the inner steel connecting section is retracted into the outer steel connecting section, the connecting top plate is located at the upper end of the first connecting flange.
[0013] According to the steel frame of the building provided by this utility model, the top beam is an H-beam, and the flange of the top beam is connected to the connecting top plate by bolts.
[0014] According to the steel frame of the building provided by this utility model, a connecting base plate is fixedly provided at the lower outer side of each of the outer steel connecting sections.
[0015] The steel frame for building construction provided by this utility model consists of steel columns made up of outer steel connecting sections and inner steel connecting sections that can telescopically cooperate with the outer steel connecting sections. During transportation, the inner steel connecting sections retract into the outer steel connecting sections, resulting in a smaller size, reduced floor space, and easier transport. During installation, the inner steel connecting sections extend from within the outer steel connecting sections, with their lower ends connecting to the upper ends, thus enabling the steel columns to be extended and installed. This facilitates assembly and ensures reliable connections. Crossbeams are then connected to the lower parts of two adjacent inner steel connecting sections, and top beams are connected to the tops of two adjacent inner steel connecting sections to form a stable and reliable steel frame. Therefore, the steel frame for building construction of this utility model, by designing the steel columns as a telescopic structure, makes transportation in the retracted state more convenient, while facilitating assembly and ensuring reliable connections during unfolded installation, thus guaranteeing construction efficiency and quality. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the steel frame structure for the building according to this utility model;
[0018] Figure 2 This is a schematic diagram of the steel column in the retracted state of the steel frame of the building structure of this utility model;
[0019] Figure 3 This is a schematic diagram showing the steel column in the extended state of the steel frame of the building structure according to this utility model;
[0020] Figure 4 This is a schematic diagram showing the connection between the steel columns and beams in the steel frame of the building structure of this utility model;
[0021] Figure 5 This is a top view of the crossbeam in the steel frame of the building structure of this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Steel column; 101. Outer steel connecting section; 102. Inner steel connecting section; 103. First connecting flange; 104. Second connecting flange; 105. First connecting bolt; 106. Connecting base plate; 107. Connecting top plate;
[0024] 2. Crossbeam; 201. H-beam main body; 202. Vertical end plate; 203. Reinforcing rib plate; 204. Self-tapping screw; 205. Steel pad;
[0025] 3. Top beam. Detailed Implementation
[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] like Figures 1 to 5 As shown, the steel frame of the building structure of this utility model includes multiple steel columns 1, multiple crossbeams 2 connected between the steel columns 1, and multiple top beams 3 connected between the steel columns 1. Each steel column 1 includes an outer steel connecting section 101 and an inner steel connecting section 102, and both the outer steel connecting section 101 and the inner steel connecting section 102 are square steel.
[0030] During transportation, the inner steel connecting section 102 is retracted into the outer steel connecting section 101, thus reducing its size, floor space, and facilitating transportation.
[0031] During installation, the inner steel connecting section 102 extends from the outer steel connecting section 101, and the lower end of the inner steel connecting section 102 is connected to the upper end of the outer steel connecting section 101, thereby realizing the extension installation of the steel column 1. The assembly is convenient and the connection is reliable. The crossbeam 2 is connected to the lower part of two adjacent inner steel connecting sections 102, and the top beam 3 is connected to the top of two adjacent inner steel connecting sections 102 to form a structurally stable and reliable steel frame.
[0032] Therefore, the steel frame of the building structure in this embodiment of the utility model, by setting the steel column 1 as a telescopic structure, makes it more convenient to transport when it is in the retracted state, and easy to assemble and reliably connect when it is unfolded and installed, thus ensuring construction efficiency and construction quality.
[0033] Specifically, a first connecting flange 103 is fixedly installed on the upper inner side of the outer steel connecting section 101, and the first connecting flange 103 has multiple first connecting holes. A second connecting flange 104 is fixedly installed on the lower outer side of the inner steel connecting section 102, and the second connecting flange 104 has multiple first connecting bolts 105 corresponding to the first connecting holes. During installation, the first connecting flange 103 and the second connecting flange 104 are fitted together so that each first connecting bolt 105 passes through its corresponding first connecting hole and is then tightened by a connecting nut.
[0034] That is, since the first connecting flange 103 and the second connecting flange 104 are correspondingly fitted, the lower end of the inner steel connecting section 102 can be prevented from coming out of the outer steel connecting section 101. Since each of the first connecting bolts 105 is fixedly installed on the second connecting flange 104, during installation, there is no need to install connecting bolts separately to connect the first connecting flange 103 and the second connecting flange 104. It is only necessary to extend the inner steel connecting section 102 out of the outer steel connecting section 101, so that each of the first connecting bolts 105 passes through the corresponding first connecting holes, and then tighten each of the first connecting bolts 105 with connecting nuts. The installation is convenient and the construction efficiency is effectively improved.
[0035] Specifically, a connecting base plate 106 is fixed at the lower outer side of each outer steel connecting section 101 for assembly with the building floor slab.
[0036] Specifically, the crossbeam 2 includes an H-beam body 201 and vertical end plates 202 fixed at both ends of the H-beam body 201. The vertical end plates 202 are used to connect with the inner steel connection section 102.
[0037] A reinforcing rib 203 is fixed between the vertical end plate 202 and the outer side of the flange plate of the H-beam body 201 to improve the structural strength of the end of the crossbeam 2. Both the upper and lower ends of the vertical end plate 202 are connected to the inner steel connecting section 102 by two self-tapping screws 204. The two self-tapping screws 204 are located on the left and right sides of the reinforcing rib 203 respectively, ensuring a reliable connection.
[0038] In addition, a steel pad 205 is provided between the vertical end plate 202 and the inner steel connecting section 102 to further improve the structural strength after the crossbeam 2 is connected to the inner steel connecting section 102.
[0039] Specifically, a connecting top plate 107 is fixed to the upper outer side of each inner steel connecting section 102. When the inner steel connecting section 102 is retracted into the outer steel connecting section 101, the connecting top plate 107 is located at the upper end of the first connecting flange 103, which facilitates the extension of the inner steel connecting section 102 from the outer steel connecting section 101 during installation.
[0040] Among them, the top beam 3 is an H-beam, and the flange plate of the top beam 3 is connected to the connecting top plate 107 by bolts, and the connection is reliable.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A steel frame for building construction, characterized in that, The system includes multiple steel columns, multiple crossbeams connecting the steel columns, and multiple top beams connecting the steel columns. Each steel column includes an outer steel connecting section and an inner steel connecting section, both of which are made of square steel. During transportation, the inner steel connecting section retracts into the outer steel connecting section. During installation, the inner steel connecting section extends from the outer steel connecting section, with its lower end connected to the upper end of the outer steel connecting section. The crossbeams connect to the lower parts of two adjacent inner steel connecting sections, and the top beams connect to the tops of two adjacent inner steel connecting sections.
2. The steel frame for building construction according to claim 1, characterized in that, A first connecting flange is fixedly provided on the upper inner side of the outer steel connecting section, and the first connecting flange is provided with a plurality of first connecting holes; a second connecting flange is fixedly provided on the lower outer side of the inner steel connecting section, and a plurality of first connecting bolts corresponding to the first connecting holes are fixedly provided on the second connecting flange; during installation, the first connecting flange and the second connecting flange are fitted together so that each first connecting bolt passes through the corresponding first connecting hole and is then tightened by a connecting nut.
3. The steel frame for building construction according to claim 1, characterized in that, The crossbeam includes an H-shaped steel body and vertical end plates fixed at both ends of the H-shaped steel body. The vertical end plates are connected to the inner steel connecting section.
4. The steel frame for building construction according to claim 3, characterized in that, A reinforcing rib is fixed between the vertical end plate and the outer side of the flange plate of the H-beam body.
5. The steel frame for building construction according to claim 4, characterized in that, Both the upper and lower ends of the vertical end plate are connected to the inner steel connecting section by two self-tapping screws.
6. The steel frame for building construction according to claim 5, characterized in that, The two self-tapping screws are located on the left and right sides of the reinforcing rib plate, respectively.
7. The steel frame for building construction according to claim 5, characterized in that, A steel pad is also provided between the vertical end plate and the inner steel connecting section.
8. The steel frame for building construction according to claim 2, characterized in that, A connecting top plate is fixed to the upper outer side of each of the inner steel connecting sections. When the inner steel connecting section is retracted into the outer steel connecting section, the connecting top plate is located at the upper end of the first connecting flange.
9. The steel frame for building construction according to claim 8, characterized in that, The top beam is an H-beam, and the flange of the top beam is connected to the connecting top plate by bolts.
10. The steel frame for building construction according to claim 1, characterized in that, A connecting base plate is fixedly provided at the lower outer side of each of the aforementioned outer steel connecting sections.