Steel column footing anchor plate support structure and anchor plate assembly

Abstract

The utility model discloses a steel stand column foot anchor bolt backing plate support structure and backing plate subassembly for solving the problem of the temporary fixing structure of column foot not being firm in the installation process of steel stand column foot. The column foot of steel stand column is placed on the foundation through the backing plate subassembly, and the column foot anchor bolt is inserted into the ground groove. The backing plate subassembly comprises a backing plate, a stud bolt and a basket nut. The backing plate is of a wedge structure and has an installation ladder on the inclined surface of the backing plate. The installation ladder is designed with a height difference and is clamped on the edge of the column foot. Two backing plates are mechanically connected through two stud bolts and a basket nut. The distance between the two ends of the backing plate is adjusted by rotating the basket nut. The existence of the installation ladder can adjust the position change of the backing plate during the pouring of concrete, thereby improving the installation rigidity of the steel stand column and avoiding the deviation of the steel stand column during the installation and fixation process.

Description

Technical Field

[0001] This utility model relates to the field of steel structure column base installation and construction technology. Background Technology

[0002] During the installation of steel structure columns, pads are needed under the column base plate for auxiliary support. Their function is to cover large holes requiring secondary grouting, accommodate positioning tolerances during on-site installation, ensure proper installation of nuts, and transfer tensile force through the pads. These pads are commonly used small components, typically wedge-shaped; despite their small size, they are essential for the installation of steel structure column bases.

[0003] The "Steel Structure Design Manual" provides clear guidance on this type of bearing plate, giving the corresponding thickness range for different types of steel structure column bases. For example, for anchor bolts with a diameter of 36mm, the bearing plate should be made of Q235 steel, with the larger dimensions chosen: a thickness of 20mm and a side length of 150mm.

[0004] In current technology, the pad is wedge-shaped, which is prone to slippage and displacement when it is fitted with the steel column foot, causing displacement of the steel column foot, and even causing the anchor bolt to fail through, bend or crack.

[0005] In summary, the rationality of the pad design has a significant impact on the installation and construction of steel column bases, especially on ensuring the effective transmission of force and preventing failure before the anchor bolts. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a steel column base anchor plate support structure and plate assembly, which solves the problem of unreliable temporary fixing structure of the column base during the installation of steel column bases.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A steel column base anchor plate support structure includes a steel column, column base anchor bolts, and a plate assembly. A trench for secondary grouting is pre-reserved on a hardened foundation. The column base of the steel column is placed on the foundation via the plate assembly, and the column base anchor bolts are inserted into the trench. The plate assembly comprises a plate, double-ended bolts, and a turnbuckle nut. The plate has a wedge-shaped structure and an installation step on its inclined surface. The installation step features a stepped design with a height difference and is engaged with the edge of the column base. The two plates are mechanically connected by two double-ended bolts and a turnbuckle nut. The turnbuckle nut is mechanically connected to the two double-ended bolts via left-hand and right-hand threads, respectively. Rotating the turnbuckle nut adjusts the distance between the plates at both ends.

[0008] Furthermore, the angle between the inclined surface of the pad and the horizontal plane is between 100 degrees and 100 degrees.

[0009] Furthermore, the height difference between two adjacent steps in the installation ladder is 1 mm.

[0010] Furthermore, the double-ended bolt is installed in the bolt hole of the pad via a threaded connection.

[0011] Furthermore, the pad is an L-shaped right-angle structure consisting of two parts, wherein the joint between the two parts has a milled groove.

[0012] A pad assembly, characterized in that it comprises a pad, double-ended bolts, and a turnbuckle nut, wherein the pad has a wedge-shaped structure and an installation step on its inclined surface, the installation step adopting a stepped design with a height difference, the two pads are mechanically connected by two double-ended bolts and a turnbuckle nut, wherein the turnbuckle nut is mechanically connected to the two double-ended bolts by left-hand thread and right-hand thread respectively, and rotating the turnbuckle nut adjusts the distance between the two pads.

[0013] Furthermore, the angle between the inclined surface of the pad and the horizontal plane is between 100 degrees and 100 degrees.

[0014] Furthermore, the height difference between two adjacent steps in the installation ladder is 1 mm.

[0015] Furthermore, the double-ended bolt is installed in the bolt hole of the pad via a threaded connection.

[0016] Furthermore, the pad is an L-shaped right-angle structure consisting of two parts, wherein the joint between the two parts has a milled groove.

[0017] The beneficial effects of this utility model are: In this technology, an installation step with a stepped design is provided on the base plate to provide auxiliary support for the column base steel plate, ensuring that the verticality of the steel column remains within the design requirements. The presence of this installation step allows for adjustment of the base plate's position during concrete pouring, thereby improving the installation rigidity of the steel column and preventing misalignment during installation. Simultaneously, the turnbuckle in the base plate assembly ensures that the two base plates tightly grip the column base steel plate. That is, the combined tension of the double-ended bolts and turnbuckle clamps the base steel plate, achieving and maintaining the installation accuracy of the base plates. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a top view of the present invention.

[0020] Figure 3 This is an elevation view of the present utility model.

[0021] Figure 4 This is a 3D view of the pad assembly.

[0022] Figure 5 This is a 3D view of the pad.

[0023] Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle.

[0024] Figure 7 This is a perspective view of the pad in Example 2.

[0025] Figure 8 This is a plan view of the pad in Example 2.

[0026] In the picture: 10. Pad, 11. Mounting steps, 12. Bolt holes, 13. Milling grooves, 20. Double-ended bolt, 30. Turnbuckle nut 40. Ground trench; 41. Foundation. 50. Steel columns, 60. Column base anchor bolt; 61. Column base. Detailed Implementation

[0027] The steel column base anchor plate support structure includes a steel column 50, a column base anchor 60, and a plate assembly. A trench 40 for secondary grouting is reserved on the hardened foundation 41. The trench 40 is used to install the column base anchor 60, and the steel column 50 is installed through secondary grouting.

[0028] Example 1 refer to Figures 1 to 6 The series of diagrams shown in this embodiment illustrates that the pad assembly consists of a pad 10, a double-ended bolt 20, and a turnbuckle nut 30. The pad 10 has a wedge-shaped structure, is made of galvanized steel, and has an inclined surface with stepped mounting steps 11. These mounting steps 11 are designed to gradually recede at 1 mm height differences. These mounting steps 11 provide support for the steel column 50 base at different leveling positions.

[0029] The angle between the inclined surface of the aforementioned pad 10 and the horizontal plane is between 30 degrees and 60 degrees, for example, 45 degrees in this embodiment.

[0030] A protrusion is provided at the high point of the aforementioned pad 10, and a bolt hole 12 is provided at this protrusion for installing double-ended bolts 20. The aforementioned turnbuckle nut 30 is used for the mechanical connection of the two double-ended bolts 20. The turnbuckle nut 30 is mechanically connected to the two double-ended bolts 20 through left-hand thread and right-hand thread respectively. By rotating the turnbuckle nut 30, the total length of the two double-ended bolts 20 can be adjusted, thereby adjusting the distance between the pads 10 at both ends.

[0031] The installation process is as follows: First, four column anchor bolts 60 are fixed to the lower column base 61 of the steel column 50 using nuts. In this embodiment, the steel column 50 is an I-beam column 50. A rectangular steel plate is welded to the bottom of the steel column 50, forming a column base 61 for mechanical connection after welding. That is, the column base is a flat structure. Bolt holes 12 are provided on the column base for installing the aforementioned column anchor bolts 60. After installation, the column is hoisted. While hoisting, prepare two sets of pad assemblies and place four pads 10 at the four corners of the column base. During hoisting, adjust the verticality of the steel column 50 and gradually insert the column base anchor bolts 60 into the trench 40 to be poured. While ensuring the verticality of the steel column 50, gradually lower it until the column base steel plate overlaps the four pads 10. Adjust the support points of the pads 10. After adjustment, continue to release the hoisting steel cable and lock the position of the pads 10 with the turnbuckle nut 30. After locking, keep the position of the steel column 50 still. Then pour quick-setting concrete into the trench 40 to fix the column base of the steel column 50 by pouring concrete. After the concrete solidifies and reaches 80% of its curing strength, finally remove the hoisting ropes to complete one installation.

[0032] Example 2 refer to Figure 7 and Figure 8 The difference between this embodiment and Embodiment 1 is that the structure of the pad 10 has been improved. Specifically, the pad 10 includes two parts, which form an L-shaped right-angle structure. The joint between the two parts has a milled groove 13, which is used to avoid the right-angle position of the column base steel plate. The pad 10 is installed at the right-angle corner position of the column base to support it.

[0033] Furthermore, the aforementioned pad 10 is provided with two protrusions, and bolt holes of different heights are provided on the protrusions to avoid interference from the double-ended bolts 20 used for tightening.

[0034] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A steel column base anchor plate support structure, comprising a steel column (50), column base anchors (60), and a plate assembly, wherein, A trench (40) for secondary grouting is reserved on the hardened foundation (41). The column base of the steel column is placed on the foundation through the pad assembly, and the column base anchor bolt (60) is inserted into the trench (40). The pad assembly includes a pad (10), a double-ended bolt (20), and a turnbuckle nut (30). The pad (10) is a wedge-shaped structure and has an installation step (11) on the inclined surface of the pad. The installation step (11) has a stepped design and is snapped onto the edge of the column base. The two pads are mechanically connected by two double-ended bolts (20) and a turnbuckle nut (30). The turnbuckle nut (30) is mechanically connected to the two double-ended bolts (20) through left-hand thread and right-hand thread, respectively. Rotating the turnbuckle nut (30) adjusts the spacing between the pads (10) at both ends.

2. The steel column base anchor plate support structure according to claim 1, characterized in that, The angle between the inclined surface of the pad (10) and the horizontal plane is between 30 degrees and 60 degrees.

3. The steel column base anchor plate support structure according to claim 1, characterized in that, The height difference between two adjacent steps in the installation ladder (11) is 1 mm.

4. The steel column base anchor plate support structure according to claim 1, characterized in that, The double-ended bolt is installed in the bolt hole (12) of the pad (10) by means of a threaded connection.

5. The steel column base anchor plate support structure according to claim 1, characterized in that, The pad (10) is an L-shaped right-angle structure consisting of two parts, wherein the joint between the two parts has a milled groove (13).

6. A pad assembly, characterized in that, The device includes a pad (10), a double-ended bolt (20), and a turnbuckle nut (30). The pad (10) has a wedge-shaped structure and an installation step (11) on its inclined surface. The installation step (11) has a stepped design. The two pads are mechanically connected by two double-ended bolts (20) and a turnbuckle nut (30). The turnbuckle nut (30) is mechanically connected to the two double-ended bolts (20) by a left-hand thread and a right-hand thread, respectively. Rotating the turnbuckle nut (30) adjusts the distance between the pads (10) at both ends.

7. The pad assembly according to claim 6, characterized in that, The angle between the inclined surface of the pad (10) and the horizontal plane is between 30 degrees and 60 degrees.

8. The pad assembly according to claim 6, characterized in that, The height difference between two adjacent steps in the installation ladder (11) is 1 mm.

9. The pad assembly according to claim 6, characterized in that, The double-ended bolt is installed in the bolt hole (12) of the pad (10) by means of a threaded connection.

10. The pad assembly according to claim 6, characterized in that, The pad (10) is an L-shaped right-angle structure consisting of two parts, wherein the joint between the two parts has a milled groove (13).

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