Steel column base structure with high resistance

Abstract

The utility model discloses a steel column base structure with strong resistance, which comprises a steel column, a steel column bottom plate and a single-base short column, stiffening ribs are fixed on two sides of the steel column, a threaded hole is arranged on the steel column bottom plate, the steel column bottom plate is in threaded connection with an anchor bolt, a short steel bar is welded at the bottom of the anchor bolt through a steel bar, and a retaining nut is in threaded connection on the steel column bottom plate through the anchor bolt. The lower portion of the retaining nut is in threaded connection with a fastening nut through an anchor bolt, a base plate is placed below the fastening nut, the lower portion of the steel column bottom plate is in threaded connection with an adjusting nut through an anchor bolt, the single-base short column and the reinforced concrete foundation are cast into a whole in a cast-in-place mode, and a downwards-concave shear key reserved groove is reserved in the top of the single-base short column and used for embedding an I-shaped shear key. A 50 mm gap is reserved between the single-base short column and the steel column bottom plate and used for pouring a secondary grouting layer, and an I-shaped shear key is welded to the lower portion of the steel column bottom plate. The device solves the current problems that the device does not resist shearing and is easy to pull out.

Description

Technical Field

[0001] The utility model belongs to the technical direction of steel column foot structures, and specifically relates to a steel column foot structure with strong resistance. Background Art

[0002] The steel column foot refers to the connection between the steel structure column and the foundation, which is usually connected to the foundation by welding or bolting. The design and construction of the column foot are very important because it bears the weight of the steel column and possible horizontal force and swing force. A good column foot design can ensure the stability and safety of the column under earthquakes or other external forces. Traditional steel column feet are mainly fixed by bolts buried in the reinforced concrete base, and the bolts used are ordinary bolts that have not been specially treated. However, the structure supported by the steel column on the upper part of the steel column foot is generally a large-span, large-space structure, such as a factory building or a stadium structure. When building structures such as factories and stadiums are built in coastal areas, they are extremely susceptible to the external force of typhoons, and the steel column foot fixed only by ordinary bolts is very easy to be sheared or uprooted. Therefore, a steel column foot structure with strong resistance is proposed to create a shear-resistant and pull-resistant steel column foot structure. Utility Model Content

[0003] The utility model aims to provide a steel column base structure with strong resistance for existing devices, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a steel column base structure with strong resistance, including a steel column, a steel column base plate and a single-base short column, characterized in that: a threaded hole is opened on the steel column base plate, the steel column base plate is threadedly connected with an anchor bolt, the bottom of the anchor bolt is welded with a short steel bar through a steel bar, and an I-shaped shear key is welded under the steel column base plate.

[0005] The utility model further describes that a stop nut is connected to the bottom plate of the steel column through an anchor bolt thread, a fastening nut is connected to the bottom of the stop nut through an anchor bolt thread, and a pad is placed under the fastening nut.

[0006] The utility model further illustrates that stiffening ribs are fixed on both sides of the steel column, and an adjusting nut is threadedly connected under the bottom plate of the steel column through an anchor bolt.

[0007] The utility model further illustrates that the single-base short column and the reinforced concrete foundation are cast in situ to form a whole, and a concave shear key groove is left on the top of the single-base short column to embed an I-shaped shear key.

[0008] The utility model further illustrates that a gap of 50 mm is left between the single base short column and the steel column bottom plate for pouring a secondary grouting layer.

[0009] The utility model further describes that a layer of concrete is poured above the bottom plate of the steel column, and structural steel bars are inserted into both ends of the inner side of the concrete package.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0011] (1) By providing short steel bars, the short steel bars welded on the sides of the anchor bolts improve the pull-out resistance of the anchor bolts, thereby preventing the anchor bolts from being easily pulled out due to external forces.

[0012] (2) By providing an I-shaped shear key and welding the I-shaped shear key to the column foot bottom plate, the shear resistance of the connection between the column foot and the structure is greatly improved, thereby preventing the anchor bolt from being sheared due to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is an overall left side schematic diagram of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of the A area of ​​the utility model;

[0017] In the figure: 1. Steel column; 2. Stiffener; 3. Anchor bolt; 4. Lock nut; 5. Fastening nut; 6. Pad; 7. Steel column base plate; 8. I-shaped shear key; 9. Adjustment nut; 10. Short steel bar; 11. Reinforced concrete foundation; 12. Shear key groove; 13. Secondary grouting layer; 14. Structural steel bar; 15. Concrete wrapping; 16. Single-base short column. DETAILED DESCRIPTION

[0018] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a steel column foot structure with strong resistance, including a steel column 1, a steel column bottom plate 7 and a single base short column 16, and stiffeners 2 are fixed on both sides of the steel column 1, and the stiffeners 2 are used to enhance stability and improve bearing capacity;

[0020] The steel column bottom plate 7 is provided with a threaded hole, the steel column bottom plate 7 is threadedly connected with an anchor bolt 3, and a short steel bar 10 is welded to the bottom of the anchor bolt 3 through a steel bar.

[0021] The bottom plate 7 of the steel column is threadedly connected with a stop nut 4 through the anchor bolt 3 to prevent the anchor bolt 3 from self-loosening under vibration and other adjustments. The bottom of the stop nut 4 is threadedly connected with a fastening nut 5 through the anchor bolt 3. The fastening nut 5 increases the connection stability. A pad 6 is placed under the fastening nut 5 to increase the bearing capacity and sound insulation capacity.

[0022] An adjusting nut 9 is threadedly connected to the bottom plate 7 of the steel column through the anchor bolt 3. The adjusting nut 9 is used to adjust the installation error and displacement of the steel structure. A pad 6 is sandwiched between the adjusting nut 9 and the bottom plate 7 of the steel column.

[0023] An I-shaped shear key 8 is welded below the bottom plate 7 of the steel column. The I-shaped shear key 8 is used to improve the shear resistance of the connection between the column foot and the structure to prevent the anchor bolt 3 from shearing damage due to external force.

[0024] The single-base short column 16 and the reinforced concrete foundation 11 are cast in situ as a whole. A concave shear key groove 12 is left on the top of the single-base short column 16 to embed the I-shaped shear key 8. A 50mm gap is left between the single-base short column 16 and the steel column base plate 7 to pour the secondary grouting layer 13 to make the steel column 1 and the single-base short column 16 closer. A layer of concrete wrap 15 is poured above the steel column base plate 7. The concrete wrap 15 plays a moisture-proof role. Structural steel bars 14 are inserted at both ends of the inner side of the concrete wrap 15 to control the shrinkage deformation and temperature deformation of the concrete wrap 15.

[0025] Working principle: The single-base short column 16 and the reinforced concrete foundation 11 are cast into a whole. The steel column 1 is connected to the single-base short column 16 through the pre-buried anchor bolt 3. Short steel bars 10 are welded on the side of the anchor bolt 3 to prevent the anchor bolt 3 from being easily pulled out due to external force. The single-base short column 16 has a concave shear key groove 12 for embedding the I-shaped shear key 8 on the steel column base plate 7. At the same time, a 50mm gap is left between the single-base short column 16 and the steel column base plate 7, and three layers of nuts are installed above and below to level the steel column 1. After the installation is completed, the reserved gap is used to cast the secondary grouting layer 13 to ensure that the steel column 1 and the single-base short column 16 are flat and tight. Finally, the structural steel bar 14 is inserted into the steel column base plate 7, and a circle of concrete wrap 15 is poured around the structural steel bar 14 to prevent moisture erosion.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A steel column base structure with strong resistance, comprising a steel column (1), a steel column base plate (7) and a single-base short column (16), characterized in that: The steel column bottom plate (7) is provided with a threaded hole, the steel column bottom plate (7) is threadedly connected with an anchor bolt (3), a short steel bar (10) is welded to the bottom of the anchor bolt (3) through a steel bar, and an I-shaped shear key (8) is welded below the steel column bottom plate (7).

2. A highly resistant steel column base structure according to claim 1, characterized in that: A stop nut (4) is threadedly connected to the top of the steel column base plate (7) via an anchor bolt (3), a fastening nut (5) is threadedly connected to the bottom of the stop nut (4) via an anchor bolt (3), and a pad (6) is placed below the fastening nut (5).

3. A steel column base structure with strong resistance according to claim 2, characterized in that: Stiffening ribs (2) are fixed on both sides of the steel column (1), and an adjusting nut (9) is threadedly connected to the bottom of the steel column base plate (7) via an anchor bolt (3).

4. A steel column base structure with strong resistance according to claim 3, characterized in that: The single-base short column (16) and the reinforced concrete foundation (11) are cast in situ to form a whole, and a concave shear key groove (12) is left on the top of the single-base short column (16) for embedding an I-shaped shear key (8).

5. A steel column base structure with strong resistance according to claim 4, characterized in that: A gap of 50 mm is left between the single base short column (16) and the steel column bottom plate (7) for pouring the secondary grouting layer (13).

6. A steel column base structure with strong resistance according to claim 5, characterized in that: A layer of concrete wrap (15) is poured above the steel column bottom plate (7), and structural steel bars (14) are inserted into both ends of the inner side of the concrete wrap (15).

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