Column foot connecting structure of steel tubular column

Abstract

The utility model relates to the technical field of steel structure column foot connection, in particular to a steel tubular column foot connection structure which comprises a limiting plate and a concrete foundation, at least two anchor rods are arranged in the concrete foundation, anchor bolt holes are formed in the limiting plate, at least two anchor bolt holes are formed in the limiting plate and correspond to the anchor rods in a one-to-one mode, and the limiting plate is connected with the concrete foundation. A column body is fixedly connected to the limiting plate, a leveling nut is in threaded connection with the anchor rod, a sliding ring is machined on the leveling nut, the anchor rod is sleeved with a first base plate, one side of the first base plate is attached to the sliding ring and is machined to form a positioning ring, the anchor rod is sleeved with a second base plate, and a fastening nut is in threaded connection with the anchor rod. And the anchor rod is in threaded connection with a locknut, so that the effects of conveniently leveling the steel column and improving the construction efficiency are achieved.

Description

Technical Field

[0001] This application relates to the field of steel structure column base connection technology, and in particular to a steel round tube column base connection structure. Background Technology

[0002] Precast steel structure columns have been widely used in industrial plants, commercial buildings, public buildings and residential buildings due to their advantages such as high efficiency, environmental protection, stability, earthquake resistance and flexible design.

[0003] The connection between steel structure column bases and concrete foundations is typically achieved through embedded column bases. Currently, the construction method for embedded column bases usually involves constructing column base supports on the foundation pad, fixing the steel column to the supports, and then pouring the foundation as a whole. This method can significantly accelerate the foundation construction process, and the quality of the foundation concrete is also easier to ensure.

[0004] The existing technical solutions mentioned above have the following drawbacks: after fixing the steel column to the column base bracket, the positioning of the steel column is not easy to control, and once the steel column is misaligned, it is not easy to correct it. Utility Model Content

[0005] This application provides a steel round tube column base connection structure to facilitate the leveling of steel columns and improve construction efficiency.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A steel round tube column base connection structure includes a limiting plate and a concrete foundation. Anchor rods are installed in the concrete foundation, with at least two anchor rods. Anchor bolt holes are provided on the limiting plate, with at least two anchor bolt holes corresponding one-to-one with the anchor rods. A column is fixed to the limiting plate. A leveling nut is threaded onto the anchor rod, and a sliding ring is machined on the leveling nut. A first pad is fitted onto the anchor rod, with one side of the first pad conforming to the sliding ring and machined to form a positioning ring. A second pad is fitted onto the anchor rod, and a fastening nut and an anti-loosening nut are threaded onto the anchor rod.

[0008] By adopting the above technical solution, after the steel column is hoisted, it is necessary to perform horizontal correction and axis re-measurement on the steel column. By rotating the leveling nut, the first pad is moved up and down along the anchor rod for slight adjustment until the elevation requirement is met. When rotating the leveling nut, the sliding ring can reduce the friction between the leveling nut and the first pad, making it easier for workers to rotate the leveling nut. At the same time, it reduces the rotation of the first pad with the leveling nut, making it easier to level the steel column and improve construction efficiency.

[0009] Optionally, the inner wall of the sliding ring abuts against the outer diameter of the positioning ring.

[0010] By adopting the above technical solution, the positioning ring is embedded in the sliding ring, which can reduce the sliding of the first pad and the leveling nut contact surface, ensure the stability of the first pad when the leveling nut rotates, reduce the sliding of the first pad, facilitate the leveling of the steel column, and improve construction efficiency.

[0011] Optionally, one end of the anchor bolt hole is chamfered.

[0012] By adopting the above technical solution, it is easy to insert the anchor rod into the corresponding anchor bolt hole.

[0013] Optionally, one side of the first pad is machined with a positioning block that matches the chamfer of the anchor bolt hole.

[0014] By adopting the above technical solution, the positioning block can be embedded in the chamfer of one end of the anchor bolt hole, reducing the sliding between the first pad and the limiting plate.

[0015] Optionally, the first pad has a trapezoidal cross-section and the side with the larger surface area abuts against the limiting plate.

[0016] By adopting the above technical solution, it is easier for staff to measure the construction elevation of the limit plate, thereby improving construction efficiency.

[0017] Optionally, the fastening nut has a fastening hole, a fastening pin is inserted into the fastening hole, the fastening hole is connected to an extrusion hole, one end of the extrusion hole is connected to the inner wall of the fastening nut, a copper wire is inserted into the extrusion hole, and one end of the copper wire extends into the fastening hole.

[0018] By adopting the above technical solution, when tightening the anti-loosening nut, copper wire is squeezed into the gap between the tightening nut and the anchor rod, ensuring the stability of the threaded connection between the tightening nut and the anchor rod and reducing the risk of the tightening nut loosening.

[0019] Optionally, a reinforcing plate is fixedly connected to the limiting plate, and one side of the reinforcing plate is in contact with the inner wall of the column.

[0020] By adopting the above technical solution, the connection strength between the column and the limiting plate can be increased, and the overall structural stability of the connection structure can be improved.

[0021] Optionally, the limiting plate is provided with grouting holes.

[0022] By adopting the above technical solution, the gap during grouting between the limiting plate and the concrete foundation can be reduced, the bonding strength between the limiting plate and the concrete foundation can be improved, the stability of the steel column can be increased, and the load-bearing capacity and stability of the steel column can be improved.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting a first pad and a leveling nut, the friction between the leveling nut and the first pad can be reduced, making it easier for workers to rotate the leveling nut. At the same time, the first pad is reduced from rotating with the leveling nut, which makes it easier to level the steel column and improves construction efficiency.

[0025] 2. By setting a positioning ring, the sliding of the first pad and the leveling nut contact surface can be reduced, which can ensure the stability of the first pad when the leveling nut rotates and reduce the sliding of the first pad;

[0026] 3. By setting fastening holes, fastening nails, extrusion holes and copper wire, when tightening the anti-loosening nut, the copper wire is squeezed into the gap between the fastening nut and the anchor rod, ensuring the stability of the threaded connection between the fastening nut and the anchor rod and reducing the risk of the fastening nut loosening. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a cross-sectional structural diagram of this application;

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Limiting plate; 11. Concrete foundation; 12. Anchor rod; 13. Anchor bolt hole; 14. Grouting hole; 15. Column; 16. Installation port; 17. Reinforcing plate; 2. Leveling nut; 21. Sliding ring; 3. First pad; 31. Positioning ring; 32. Positioning block; 4. Second pad; 5. Fastening nut; 51. Fastening hole; 52. Extrusion hole; 53. Fastening nail; 54. Copper wire; 6. Anti-loosening nut. Detailed Implementation

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] This application discloses a steel circular tube column base connection structure, referring to... Figure 1 and Figure 2 The connecting structure includes a limiting plate 1, the surface of the limiting plate 1 is circular, and anchor rods 12 are fixedly installed in the concrete foundation 11 by pre-embedding. Four anchor rods 12 are arranged at intervals. The surface of the limiting plate 1 is circular and has anchor bolt holes 13. There are four anchor bolt holes 13, which correspond one-to-one with the four anchor rods 12.

[0033] Reference Figure 2A grouting hole 14 is provided at the center of the limiting plate 1. A column 15 is welded to the top surface of the limiting plate 1. An installation port 16 is provided at one end of the column 15 near the limiting plate 1. There are four installation ports 16, which are located at the anchor bolt holes 13 respectively. A reinforcing plate 17 is welded to the side of the limiting plate 1 facing the column 15. One side of the reinforcing plate 17 is attached to the inner wall of the column 15. There are four reinforcing plates 17, which are located between the anchor bolt holes 13 respectively. The reinforcing plate 17 can increase the connection strength between the column 15 and the limiting plate 1 and increase the overall structural stability of the connection structure. The side of the anchor bolt hole 13 away from the column 15 is chamfered.

[0034] Reference Figure 2 and Figure 3 Anchor rod 12 is threaded with a leveling nut 2, which is located on the side of the limiting plate 1 away from the column 15. Anchor rod 12 is fitted with a first pad 3, which is located between the leveling nut 2 and the limiting plate 1. The first pad 3 has a trapezoidal cross section and the side with the larger plate area abuts against the limiting plate 1. The leveling nut 2 has an integrally formed sliding ring 21 on the side facing the first pad 3. The side of the sliding ring 21 away from the leveling nut 2 is machined into an arc-shaped surface. The side of the first pad 3 away from the limiting plate 1 is machined into a positioning ring 31. The side of the positioning ring 31 away from the first pad 3 is machined into an arc-shaped surface. The outer diameter of the positioning ring 31 is smaller than the inner diameter of the sliding ring 21, and the outer wall of the positioning ring 31 abuts against the inner wall of the sliding ring 21. The side of the first pad 3 facing the limiting plate 1 is machined into a positioning block 32 that matches the chamfer of the anchor bolt hole 13.

[0035] Reference Figure 2 and Figure 3 Anchor rod 12 is threaded with a fastening nut 5, which is located on the side of the limiting plate 1 facing the column 15. A second washer 4 is fitted on the anchor rod 12, located between the fastening nut 5 and the limiting plate 1. Two fastening holes 51 are symmetrically arranged on the side of the fastening nut 5 away from the limiting plate 1. An extrusion hole 52 is connected to the bottom of each fastening hole 51. A fastening nail 53 is inserted into each fastening hole 51, with one end extending out of the opening and the other end located near the extrusion hole 52. One end of the extrusion hole 52 connects to the inner wall of the fastening nut 5, and a copper wire 54 is inserted into the extrusion hole 52, with one end of the copper wire 54 extending into the fastening hole 51 and abutting against one end of the fastening nail 53. An anti-loosening nut 6 is threaded on the anchor rod 12, located on the side of the fastening nut 5 away from the limiting plate 1.

[0036] When using this connection structure, firstly, thread the leveling nut 2 to the anchor rod 12 embedded in the concrete foundation 11. Then, place the first pad 3 on the anchor rod 12, so that the positioning ring 31 at the bottom of the first pad 3 is embedded in the sliding ring 21. This reduces the slippage between the first pad 3 and the leveling nut 2. Measure the construction elevation of the limiting plate 1 as required. The side of the limiting plate 1 with the larger area is easier for workers to measure the construction elevation of the limiting plate 1. By rotating the leveling nut 2, the first pad 3 moves up and down along the anchor rod 12 to adjust the construction elevation. Once the elevation of the first pad 3 reaches the construction requirements, the section of column 15 away from the limiting plate 1 is lifted, aligning the anchor bolt hole 13 on the limiting plate 1 with the anchor rod 12. The hoisting machine is then controlled to lower column 15 and the limiting plate 1. The chamfer at one end of the anchor bolt hole 13 facilitates the insertion of the anchor rod 12 into the corresponding anchor bolt hole 13. When the side of the limiting plate 1 away from column 15 is in contact with the first pad 3, the second pad 4 is fitted onto the anchor rod 12, and the fastening nut 5 is installed on the anchor rod 12. At this point, column 15 is securely fixed, and the hoisting machine is moved away from column 15.

[0037] After the steel column is hoisted, it is necessary to perform horizontal correction and axis re-measurement. By rotating the leveling nut 2, the first pad 3 is finely adjusted up and down along the anchor rod 12 until the required elevation is achieved. When rotating the leveling nut 2, the sliding ring 21 can reduce the friction between the leveling nut 2 and the first pad 3, making it easier for workers to rotate the leveling nut 2. At the same time, it reduces the rotation of the first pad 3 with the leveling nut 2. The positioning ring 31 can ensure the stability of the first pad 3 when the leveling nut 2 rotates and reduce the sliding of the first pad 3. The positioning block 32 can be embedded in the chamfer of one end of the anchor bolt hole 13, reducing the sliding between the first pad 3 and the limiting plate 1, which facilitates the leveling of the steel column and improves construction efficiency.

[0038] When tightening the anti-loosening nut 6, as the anti-loosening nut 6 approaches the fastening nut 5, the anti-loosening nut 6 will push the fastening nail 53 to move towards the bottom of the fastening hole 51. At the same time, a section of copper wire 54 located in the fastening hole 51 will be squeezed. The copper wire 54 is squeezed out from the end of the extrusion hole 52 away from the fastening hole 51 into the gap between the fastening nut 5 and the anchor bolt. By tightening the anti-loosening nut 6, the copper wire 54 is squeezed into the gap between the fastening nut 5 and the anchor rod 12, ensuring the stability of the threaded connection between the fastening nut 5 and the anchor rod 12 and reducing the risk of the fastening nut 5 loosening.

[0039] Grouting holes 14 can reduce the gap when grouting between the limiting plate 1 and the concrete foundation 11, improve the bonding strength between the limiting plate 1 and the concrete foundation 11, increase the stability of the steel column, and improve the load-bearing capacity and stability of the steel column.

[0040] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A steel round tube column base connection structure, characterized in that: The connection structure includes a limiting plate (1) and a concrete foundation (11). Anchor rods (12) are provided in the concrete foundation (11). There are at least two anchor rods (12). Anchor bolt holes (13) are provided on the limiting plate (1). There are at least two anchor bolt holes (13) and they correspond one-to-one with the anchor rods (12). A column (15) is fixedly connected to the limiting plate (1). A leveling nut (2) is threaded onto the anchor rod (12). A sliding ring (21) is machined on the leveling nut (2). A first pad (3) is fitted on the anchor rod (12). One side of the first pad (3) is attached to the sliding ring (21) and a positioning ring (31) is machined on it. A second pad (4) is fitted on the anchor rod (12). A fastening nut (5) is threaded onto the anchor rod (12). An anti-loosening nut (6) is threaded onto the anchor rod (12).

2. The steel round tube column base connection structure according to claim 1, characterized in that: The inner wall of the sliding ring (21) abuts against the outer diameter of the positioning ring (31).

3. The steel round tube column base connection structure according to claim 2, characterized in that: The anchor bolt hole (13) has a chamfered end.

4. The steel round tube column base connection structure according to claim 3, characterized in that: The first pad (3) has a positioning block (32) formed on one side to match the chamfer of the anchor bolt hole (13).

5. The steel round tube column base connection structure according to claim 4, characterized in that: The first pad (3) has a trapezoidal cross section and the side with the larger plate area abuts against the limiting plate (1).

6. The steel round tube column base connection structure according to claim 1, characterized in that: The fastening nut (5) has a fastening hole (51) and a fastening pin (53) is inserted into the fastening hole (51). The fastening hole (51) is connected to an extrusion hole (52). One end of the extrusion hole (52) is connected to the inner wall of the fastening nut (5). A copper wire (54) is inserted into the extrusion hole (52) and one end of the copper wire (54) extends into the fastening hole (51).

7. The steel round tube column base connection structure according to claim 1, characterized in that: A reinforcing plate (17) is fixedly connected to the limiting plate (1), and one side of the reinforcing plate (17) is in contact with the inner wall of the column (15).

8. The steel round tube column base connection structure according to claim 7, characterized in that: The limiting plate (1) is provided with a grouting hole (14).

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