Section steel column base connection construction joint

Abstract

A section steel column base connection construction joint comprises a prefabricated foundation structure and a post-pouring fixing structure, and the prefabricated foundation structure comprises a concrete foundation, foundation bolts, positioning plates, positioning nuts and column bases; the post-pouring fixing structure comprises a connecting column, a bottom plate fixedly connected with the connecting column, a fastening nut used for fixing the bottom plate to the positioning plate, a steel column, a connecting bolt used for fixing the column foot, the steel column and the connecting column, and secondary concrete poured on the concrete foundation. The lower portions of the foundation bolts are embedded in the concrete foundation, the upper portions of the foundation bolts extend out of the concrete foundation and are provided with positioning plates in a limited mode through positioning nuts, the bottom plate and the positioning plates are fixed through fastening nuts after being overlapped, the lower portions of the column feet are embedded in the concrete foundation, the upper portions of the column feet are connected with steel columns in an inserted mode, and the side walls of the peripheries of the steel columns are inserted into the spaces between the column feet and the connecting columns. The technical problem that in the prior art, a steel column is directly connected with a foundation bolt, and the foundation bolt is prone to bending and not easy to align is solved.

Description

Technical Field

[0001] This application relates to the field of building construction, specifically to a type of steel column base connection construction node. Background Technology

[0002] All-steel structures mainly use steel beams and steel columns as the main load-bearing components. The steel column foundations are mostly designed as independent concrete foundations. Usually, the steel columns and steel column foundations are connected by exposed bolts. The stress is complex and the external environment is variable, which poses a great challenge to the durability of the structure.

[0003] The connection between the concrete foundation and the steel column base is usually made using embedded bars. However, during the connection process, the embedded bars are often bent at different angles, making it difficult to insert them into the holes in the column base, which affects the installation efficiency. At the same time, the steel column and the column base are usually an integrated structure, forming a T-shape between them, which is not convenient for transportation. Therefore, the existing device needs to be improved to meet the actual needs. Utility Model Content

[0004] To achieve the above objectives, the purpose of this utility model is to provide a construction node for connecting steel column bases, in which secondary concrete is poured on top of the concrete foundation, and the positioning plate, base plate, column base, reinforcing plate and the top of the anchor bolts are wrapped inside the secondary concrete, so that the bottom of the steel column and the concrete foundation form an integral whole, and the steel column is plugged in between the column base and the connecting column, thus solving the problems mentioned in the background art.

[0005] The present invention adopts the following technical solution:

[0006] A construction node for connecting steel column bases includes a precast foundation structure and a post-cast fixing structure. The precast foundation structure comprises a concrete foundation, anchor bolts, a positioning plate, positioning nuts, and a column base. The post-cast fixing structure includes a connecting column, a base plate fixedly connected to the connecting column, fastening nuts on the positioning plate for fixing the base plate, a steel column, connecting bolts for fixing the column base, the steel column, and the connecting column, and secondary concrete poured on the concrete foundation. The anchor bolts are embedded in the concrete foundation at their lower parts and extend beyond the concrete foundation at their upper parts, with a positioning plate limited by the positioning nuts. The base plate and the positioning plate are overlapped and fixed by fastening nuts. The column base is embedded in the concrete foundation at its lower part and a steel column is inserted at its upper part. The four sidewalls of the steel column are inserted into the space between the column base and the connecting column, and the three are connected by connecting bolts.

[0007] More preferably, the steel column, column base, and connecting column all have rectangular cross-sections.

[0008] Furthermore, the anchor bolt has an overall L-shaped structure, with the upper part threaded to form an external thread connecting rod, and the lower hook-shaped structure pre-embedded in the concrete foundation.

[0009] Furthermore, a limiting plate is horizontally provided at the bottom of the column base, and the lower part of the column base is embedded in the concrete foundation.

[0010] Furthermore, a reinforcing plate is provided between the connecting column and the base plate.

[0011] Furthermore, the construction node is a strictly centrally symmetrical structure.

[0012] In addition, the positioning plate is set at a certain distance from the top surface of the concrete foundation.

[0013] More preferably, the connecting column, the base plate, and the fastening nut are all embedded in the secondary concrete.

[0014] Compared with the prior art, this utility model has the following features and beneficial effects:

[0015] This application involves pre-embedding anchor bolts and connecting columns inside the concrete foundation, sequentially threading positioning nuts onto the outer walls of multiple sets of anchor bolts, adjusting the multiple sets of positioning nuts to the same horizontal plane, inserting the top of the positioning plate through the outer wall of the anchor bolt, and placing it on the top of the positioning nut. At this time, the top of the connecting column passes through the top of the positioning plate.

[0016] The base plate of this application is placed on top of the positioning plate, the connecting column is sleeved on the column base, and the steel column is inserted between the connecting column and the column base. That is, the column base, which has been cast and fixed, forms the positioning insertion part of the steel column. Then, the fastening nut is sleeved on the outer wall of the anchor bolt and tightened downwards, thereby fixing the steel column with the fastening nut. Then, connecting bolts are driven around the column base in sequence to connect the connecting column, the column base and the steel column together. Finally, a second layer of concrete is poured on top of the concrete foundation. The steel column is directly inserted into the rectangular gap between the column base and the connecting column, which solves the technical problem in the prior art that the steel column is directly connected to the anchor bolt, and the anchor bolt is easy to bend and difficult to align. Attached Figure Description

[0017] Figure 1 This application relates to the connection diagram between the positioning plate and the base plate;

[0018] Figure 2 This is a diagram illustrating the connection between the positioning nut and the anchor bolt involved in this application;

[0019] Figure 3 The diagram illustrating the positional relationship between the concrete foundation and the secondary concrete involved in this application is shown below;

[0020] Figure 4 This is a diagram illustrating the steel column, connecting column, and column base connection involved in this application.

[0021] Reference numerals: 1-Precast foundation structure; 11-Concrete foundation; 12-Anchor bolt; 13-Positioning plate; 14-Positioning nut; 15-Column base; 16-Limiting plate; 2-Post-cast fixing structure; 21-Connecting column; 22-Base plate; 23-Steel column; 24-Connecting bolt; 25-Fastening nut; 26-Secondary concrete; 27-Reinforcing plate. Detailed Implementation

[0022] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0023] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0024] Example 1

[0025] A type of steel column base connection construction node, such as Figures 1-4 As shown, the structure includes a precast foundation structure 1 and a post-cast fixing structure 2. The precast foundation structure 1 includes a concrete foundation 11, anchor bolts 12, positioning plates 13, positioning nuts 14, and column bases 15. The post-cast fixing structure 2 includes a connecting column 21, a base plate 22 fixedly connected to the connecting column 21, fastening nuts 25 for fixing the base plate 22 to the positioning plate 13, a steel column 23, connecting bolts 24 for fixing the column bases 15, the steel column 23, and the connecting column 21, and secondary concrete 26 poured on the concrete foundation 11. The lower part of the anchor bolts 12 is embedded in the concrete foundation 11, and the upper part extends out of the concrete foundation 11 and is limited by the positioning plates 13 through the positioning nuts 14. The base plate 22 and the positioning plates 13 are overlapped and fixed by the fastening nuts 25. The lower part of the column bases 15 is embedded in the concrete foundation 11, and the upper part is inserted with steel columns 23. The four sides of the steel columns 23 are inserted into the space between the column bases 15 and the connecting columns 21, and the three are connected by the connecting bolts 24.

[0026] Example 2

[0027] Based on Example 1, the entire construction node is a strictly centrally symmetrical structure. The steel column 23, column base 15, and connecting column 21 all have rectangular cross-sections. Each side of the rectangular structure is equipped with at least four anchor bolts 12. The anchor bolts 12 are L-shaped in shape, with the upper part threaded to form an external thread connecting rod, and the lower part hook-shaped structure pre-embedded in the concrete foundation 11. The bottom of the column base 15 is equipped with a horizontal limiting plate 16, and the lower part of the column base 15 is embedded in the concrete foundation 11. A reinforcing plate 27 is also provided between the connecting column 21 and the base plate 22. The connecting column 21 is a rectangular hollow structure with the steel column and column base inserted in the middle. The positioning plate 13 is set at a certain distance from the top surface of the concrete foundation 11. The positioning nut plays the role of leveling and positioning the positioning plate. The connecting column 21, the base plate 22, and the fastening nut 25 are all embedded in the secondary concrete 26, which is poured after the steel column is transferred.

[0028] In use, the anchor bolts and connecting columns are pre-embedded inside the concrete foundation. Positioning nuts are then threaded onto the outer walls of multiple sets of anchor bolts, ensuring they are aligned horizontally. The top of the positioning plate is inserted through the outer wall of the anchor bolt and placed on top of the positioning nuts. The top of the connecting column then passes through the top of the positioning plate. The base plate is placed on top of the positioning plate, and the column base is aligned with the inner wall of the steel column and the outer wall of the connecting column. The fastening nuts are then fitted onto the outer wall of the anchor bolts and tightened downwards, thus securing the steel column. Connecting bolts are then driven around the column base to connect the connecting column, column base, and steel column together. Finally, a second layer of concrete is poured on top of the concrete foundation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A construction joint for connecting a steel column to a foundation, comprising a prefabricated foundation structure (1) and a post-cast fixing structure (2), characterized in that: The precast foundation structure (1) includes a concrete foundation (11), anchor bolts (12), positioning plate (13), positioning nut (14), and column base (15); the post-cast fixed structure (2) includes a connecting column (21), a base plate (22) fixedly connected to the connecting column (21), fastening nuts (25) for fixing the base plate (22) to the positioning plate (13), a steel column (23), connecting bolts (24) for fixing the column base (15), the steel column (23), and the connecting column (21), and secondary concrete poured on the concrete foundation (11). Concrete (26); the lower part of the anchor bolt (12) is embedded in the concrete foundation (11), and the upper part extends out of the concrete foundation (11) and is limited by the positioning plate (13) by the positioning nut (14). The bottom plate (22) and the positioning plate (13) are stacked and fixed by the fastening nut (25). The lower part of the column foot (15) is embedded in the concrete foundation (11), and the upper part is inserted with a steel column (23). The four sides of the steel column (23) are inserted into the space between the column foot (15) and the connecting column (21), and the three are connected by the connecting bolt (24).

2. A construction joint for connecting a steel column to a steel beam as claimed in claim 1, wherein: The steel column (23), column base (15) and connecting column (21) all have rectangular cross-sections.

3. A construction joint for connecting a steel column to a steel beam as claimed in claim 2, wherein: The anchor bolt (12) has an overall L-shaped structure, with the upper part threaded to form an external thread connecting rod, and the lower part hook-shaped structure pre-embedded in the concrete foundation (11).

4. A construction joint for connecting a steel column to a steel beam as claimed in claim 2, wherein: The bottom of the column base (15) is provided with a limiting plate (16), and the lower part of the column base (15) is embedded in the concrete foundation (11).

5. A construction joint for connecting a steel column to a steel beam as claimed in claim 2, wherein: A reinforcing plate (27) is also provided between the connecting column (21) and the base plate (22).

6. A construction joint for connecting a steel column to a steel beam as claimed in claim 2, wherein: The construction node has a strictly centrally symmetrical structure.

7. A construction joint for connecting a steel column to a steel beam as claimed in claim 2, wherein: The positioning plate (13) is set at a certain distance from the top surface of the concrete foundation (11).

8. A construction node for connecting steel column bases as described in any one of claims 1 to 7, characterized in that: The connecting column (21), the base plate (22), and the fastening nut (25) are all embedded in the secondary concrete (26).

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