Steel structure beam column base

Abstract

The utility model relates to a steel structure beam column foot which comprises a lower bottom plate, an upper bottom plate, a middle connecting column, a plurality of reinforcing rib plates, a plurality of anchor bolts and a lower foundation. Compared with the prior art, the steel structure beam column foot has the following advantages that the design of the lower bottom plate, the upper bottom plate, the middle connecting column and the reinforcing rib plates is adopted, the anchor bolts are arranged in an annular array mode, and therefore the structural stability of the steel structure beam column foot is remarkably improved; the bearing capacity of the column base is effectively enhanced, firm connection between the column base and the foundation is ensured through the bottom-to-top penetrating arrangement of the anchor bolts, the stability of the whole structure is enhanced, the outer wrapped concrete layer is formed by pouring the upper foundation, the cushion layer is arranged between the lower bottom plate and the lower foundation, the column base is effectively prevented from being corroded, and the service life of the column base is guaranteed; a double-nut structure is adopted to ensure the fastening performance of the anchor bolt and prevent rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure construction, in particular to a steel structure beam column foot. Background Art

[0002] The combination of steel structure and concrete has gradually entered the stage of the construction market, and the outsourced column foot has also emerged. The truss column foot with a larger span and the column foot with greater force have adopted the outsourced column foot design. The column foot is an important node connecting the upper main structure and the foundation. It is the main factor that determines its bearing capacity and plays an important role in connecting the upper and lower parts of the structure. The outsourced column foot is a column foot formed by wrapping the steel column with concrete. The way the column foot bears shear force is very different. It can effectively fix the column body and effectively transfer the axial force, bending moment and shear force at the lower end of the beam and column to the foundation, so that the upper structure and the foundation work together. At present, the column foot is mostly fixed by steel plate welding, but this method has the defects of insufficient strength of the welding joint and easy cracking. Therefore, a solution for the steel structure beam and column foot with a stable structure and more reliable connection is needed. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a steel structure beam column foot, which has high structural stability and strong bearing capacity.

[0004] In order to solve the above technical problems, the utility model provides a technical solution: a steel structure beam column foot, comprising:

[0005] Lower base plate;

[0006] An upper bottom plate, the upper bottom plate being arranged opposite to the lower bottom plate;

[0007] An intermediate connecting column, wherein the intermediate connecting column is hollow and its two side end surfaces are respectively welded to the lower bottom plate and the upper bottom plate as a whole;

[0008] A plurality of reinforcing rib plates, which are arranged in an annular array along the side walls of the middle connecting column between the lower bottom plate and the upper bottom plate, and whose side walls are respectively welded to the middle connecting column, the lower bottom plate and the upper bottom plate as a whole;

[0009] A plurality of anchor bolts, wherein the anchor bolts are arranged in a circular array with the middle connecting column as the center, each anchor bolt is arranged to penetrate the lower bottom plate and the upper bottom plate in sequence from bottom to top, and a fixing nut is arranged on the anchor bolt and above the upper bottom plate;

[0010] A lower foundation is filled below the lower base plate for placing the lower base plate.

[0011] Preferably, at least one grouting hole communicating with the hollow portion thereof is provided on the side wall of the intermediate connecting column.

[0012] Preferably, a shear key is provided on the bottom surface of the lower base plate, and the shear key is embedded in the lower foundation.

[0013] Preferably, two grouting holes are provided, and the two grouting holes are arranged opposite to each other and located at the top of the side wall of the middle connecting column.

[0014] Preferably, it also includes an upper foundation, which is cast on the lower foundation, and the top of which is cast to the bottom surface of the upper base plate to form an outer concrete layer.

[0015] Preferably, a cushion layer cast with non-shrinkage fine stone concrete or iron filings mortar is cast between the lower foundation and the lower base plate.

[0016] Preferably, each anchor bolt is threadedly connected with two fixing nuts to form a double nut.

[0017] After adopting the above structure, the utility model has the following advantages:

[0018] The present application significantly improves the structural stability of the column base of the steel structure beam and column by adopting the design of the lower base plate, the upper base plate, the middle connecting column and several reinforcing rib plates, as well as the ring array setting of the anchor bolts. The setting of the reinforcing rib plates and the hollow grouting design of the middle connecting column effectively enhance the bearing capacity of the column base. The bottom-up penetration setting of the anchor bolts ensures a firm connection between the column base and the foundation, and enhances the stability of the overall structure. By pouring the upper foundation to form an outer concrete layer and setting a cushion layer between the lower base plate and the lower foundation, the column base is effectively prevented from corrosion and the service life of the column base is guaranteed. The present application adopts a double nut structure to ensure the tightness of the anchor bolts and prevent rotation.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is the front view of the utility model.

[0023] Figure 3 It is a schematic diagram of the pouring state of the utility model.

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0025] As shown in the figure: 1. Lower base plate; 2. Upper base plate; 3. Middle connecting column; 4. Reinforcement plate; 5. Shear key; 6. Anchor bolt; 7. Fixing nut; 8. Grouting hole; 9. Lower foundation; 10. Upper foundation; 11. Cushion layer. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Combined with Figure 1 to Figure 4 A steel structure beam-column foot comprises a lower base plate 1, an upper base plate 2, an intermediate connecting column 3, a plurality of reinforcing rib plates 4, a plurality of anchor bolts 6 and a lower foundation 9.

[0029] The upper base plate 2 and the lower base plate 1 are arranged opposite to each other. Both the upper base plate 2 and the lower base plate 1 are circular and have equal diameters. Through holes arranged opposite to each other are respectively opened on the upper base plate 2 and the lower base plate 1 to facilitate the passage of the anchor bolts 6. In order to increase the connection strength between the lower base plate 1 and the lower foundation 9, a shear key 5 is provided on the bottom surface of the lower base plate 1, and the shear key 5 is buried in the lower foundation 9.

[0030] The middle connecting column 3 is hollow and its two side end faces are welded to the lower base plate 1 and the upper base plate 2 as a whole. Two grouting holes 8 connected to the hollow part are opened on the side wall of the middle connecting column 3. The two grouting holes 8 are arranged opposite to each other and are located at the top of the side wall of the middle connecting column 3, so that concrete slurry is poured into the hollow part of the middle connecting column 3 from the grouting holes 8 on both sides, thereby improving the grouting efficiency and reducing the structural influence of the opening on the middle connecting column 3.

[0031] In order to increase the stability and bearing capacity of the column base, a plurality of reinforcing rib plates 4 are arranged between the lower base plate 1 and the upper base plate 2. The plurality of reinforcing rib plates 4 are arranged in a circular array along the side walls of the middle connecting column 3 between the lower base plate 1 and the upper base plate 2, and their side walls are respectively welded to the middle connecting column 3, the lower base plate 1 and the upper base plate 2 as a whole.

[0032] The anchor bolt 6 is L-shaped, and a plurality of anchor bolts 6 are arranged in a circular array with the middle connecting column 3 as the center. Each anchor bolt 6 passes through the lower base plate 1 and the upper base plate 2 from bottom to top. Two fixing nuts 7 are provided on the anchor bolt 6 and above the upper base plate 2 to form a double nut.

[0033] The lower foundation 9 is filled under the lower base plate 1 for placing the lower base plate 1. In order to ensure the close connection between the lower base plate 1 and the lower foundation 9, a cushion layer 11 cast with non-shrinkage fine stone concrete or iron filings mortar is poured between the lower foundation 9 and the lower base plate 1. This cushion layer 11 can fill the gap between the two and prevent moisture from penetrating, thereby improving the durability of the column foot.

[0034] It also includes an upper foundation 10, which is cast on the lower foundation 9, and its top is cast to the bottom surface of the upper base plate 2 to form an outer concrete layer, which can further enhance the stability of the column foot and play an anti-corrosion role.

[0035] Working principle: During the construction of the device of the present application, a foundation pit is first excavated and the lower base plate 1, the middle connecting column 3, the upper base plate 2 and the reinforcing rib plate 4 are welded and connected. In the excavated foundation pit, a lower foundation 9 is first cast and an anchor bolt 6 is pre-buried in the lower foundation 9. The assembled foundation is assembled onto the anchor bolt 6, so that the shear key 5 is buried in the lower foundation 9. Then, a cushion layer 11 is filled to fill the gap between the lower base plate 1 and the lower foundation 9. Then, an upper foundation 10 is cast, and the part below the bottom surface of the upper base plate 2 is buried in the upper foundation 10. Concrete is filled into the hollow part of the middle connecting column 3 through the grouting hole 8 to make it full. After the beam-column base plate is placed on the upper base plate 2 and matched with the anchor bolt 6, the fixing nut 7 is selected to fix it.

[0036] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A steel structure beam column foot, characterized in that: include: Lower base plate; An upper bottom plate, the upper bottom plate being arranged opposite to the lower bottom plate; An intermediate connecting column, wherein the intermediate connecting column is hollow and its two side end surfaces are respectively welded to the lower bottom plate and the upper bottom plate as a whole; A plurality of reinforcing rib plates, which are arranged in an annular array along the side walls of the middle connecting column between the lower bottom plate and the upper bottom plate, and whose side walls are respectively welded to the middle connecting column, the lower bottom plate and the upper bottom plate as a whole; A plurality of anchor bolts, wherein the anchor bolts are arranged in a circular array with the middle connecting column as the center, each anchor bolt is arranged to penetrate the lower bottom plate and the upper bottom plate in sequence from bottom to top, and a fixing nut is arranged on the anchor bolt and above the upper bottom plate; A lower foundation is filled below the lower base plate for placing the lower base plate.

2. A steel structure beam column foot according to claim 1, characterized in that: At least one grouting hole communicating with the hollow portion of the middle connecting column is provided on the side wall of the middle connecting column.

3. The steel structure beam column foot according to claim 1, characterized in that: The bottom surface of the lower base plate is provided with a shear key, and the shear key is buried in the lower foundation.

4. The steel structure beam column foot according to claim 2, characterized in that: There are two grouting holes, which are arranged opposite to each other and located at the top of the side wall of the middle connecting column.

5. The steel structure beam column foot according to claim 3, characterized in that: It also includes an upper foundation, which is cast on the lower foundation, and the top of which is cast to the bottom surface of the upper base plate to form an outer concrete layer.

6. The steel structure beam column foot according to claim 5, characterized in that: A cushion layer made of non-shrinkage fine stone concrete or iron filings mortar is cast between the lower foundation and the lower bottom plate.

7. The steel structure beam column foot according to claim 5, characterized in that: Each anchor bolt is respectively threadedly connected with two fixing nuts to form a double nut.

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