Cup opening insertion type steel column rapid positioning method

Abstract

The invention discloses a cup opening insertion type steel column rapid positioning method which comprises the steps that an adjusting device is manufactured firstly and comprises a connecting plate assembly and an anchor bolt, the connecting plate assembly comprises a horizontally-arranged lug plate and a vertically-arranged stiffening plate, an inverted-circular-truncated-cone-shaped pit hole is reserved in a foundation during positioning, the lower end of the anchor bolt is fixed in the edge of the foundation, and the lower end of the anchor bolt is fixed to the edge of the foundation; one end of a steel column is lifted by a crane and placed in a cup opening, an inclined wedge block is placed in a gap between the edge of a pit hole and the steel column, after the steel column is preliminarily adjusted through tightness of the wedge block, the upper end of an anchor bolt is inserted into a positioning hole, the front edge of a stiffening plate and the front edge of a lug plate are attached to the side face of the steel column, and after the perpendicularity meets the requirement, a connecting plate assembly is fixed through a nut; and the wedge block is taken out to complete positioning. The steel column foot can be rapidly fixed in the foundation to complete preliminary positioning, the structure is simple, operation is convenient, practicability is high, the manufacturing cost is low, the service time of hoisting equipment is shortened, and the construction cost is remarkably reduced; and the mounting efficiency and the mounting precision of the steel column are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of on-site installation of steel structures, and particularly relates to a method for quickly positioning a cup-shaped inserted steel column. Background Art

[0002] During the installation of steel structures, the installation of steel columns accounts for a large proportion. The installation speed and quality of steel columns determine the progress of the steel structure project and the installation quality of the superstructure.

[0003] Typically, cup-shaped insert columns are relatively long. During installation, a crane is typically used to lift one end of the column and place it into the foundation cup, where it is then positioned horizontally and vertically. To save costs, the cup is typically not too large, with the distance from the column no greater than 10 cm, making it impossible to adjust its position with a jack.

[0004] So the existing positioning methods are as follows: Lay 2-3cm of cement mortar or fine stone concrete at the bottom of the foundation cup, insert the lifted column into the cup mouth and put it in place, and make the column body basically vertical. Two people put two wedges on the two opposite sides of the column, a total of eight wedges, and use a crowbar to pry the column foot and make slight movements. After the center line of the column is aligned with the alignment of the cup mouth, the column can be lowered to the bottom of the cup. After rechecking and aligning the center line, two people tighten the eight wedges around it face to face from two opposite sides. At this time, add a cable rope for temporary fixation. The lifting equipment can be withdrawn after pouring. This positioning method is time-consuming and labor-intensive. Renting a crane takes a long time and is costly. In addition, the installation accuracy is difficult to guarantee and needs improvement. Summary of the Invention

[0005] To solve the above problems, the present invention discloses a method for quickly positioning a cup-shaped inserted steel column, and designs a set of adjustment and positioning devices, which can quickly fix the column foot of the steel column in the foundation to complete the initial positioning. The method has the advantages of simple structure, convenient operation, strong practicality, low production cost, reduced use time of lifting equipment, and significantly reduced construction costs; and improved the installation efficiency and installation accuracy of the steel column.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A method for quickly positioning a cup-shaped inserted steel column comprises the following steps: (1) Make an adjustment device The adjustment device includes a connecting plate assembly and an anchor bolt, the connecting plate assembly includes a horizontally arranged ear plate and a vertically arranged stiffening plate, the rear end of the ear plate is provided with a positioning hole, the stiffening plate is vertically arranged at the front end of the ear plate, the stiffening plate is perpendicular to the ear plate, the stiffening plate is flush with the front edge of the ear plate, the upper end of the anchor bolt is provided with a thread, the outer diameter of the thread is smaller than the aperture of the positioning hole; (2) Leave an inverted cone-shaped pit on the foundation; (3) Fix the lower end of the anchor bolt in the edge of the foundation (cup mouth); (4) Lift one end of the (square) steel column with a crane and place it into the cup mouth. Place an inclined wedge in the space between the edge of the pit and the steel column. (5) After initially adjusting the steel column with the wedge, insert the upper end of the anchor bolt into the positioning hole, and make the front edges of the stiffening plate and the ear plate stick to the side of the steel column; (6) Use two theodolites to check the verticality of the two adjacent sides of the steel column. When the requirements are met, fix the connecting plate assembly with nuts, remove the wedge block, and complete the positioning.

[0007] As an improvement of the present invention, the wedge block is a right-angled triangle structure made of steel plates, wherein the right-angled side is attached to the side of the steel column and the hypotenuse is stuck at the edge of the foundation.

[0008] As an improvement of the present invention, the steel column is a single steel section or a lattice column structure.

[0009] As an improvement of the present invention, the adjusting device is used symmetrically.

[0010] As an improvement of the present invention, the anchor bolt is an expansion screw.

[0011] As an improvement of the present invention, the stiffening plate is aligned with the center line of the side surface of the steel column.

[0012] The beneficial effects of the present invention are: The cup-shaped inserted steel column rapid positioning method described in the present invention utilizes the anchor bolt positioning method to quickly position and support, which can reduce the working time of the lifting equipment. In addition, the ear plates in the adjustment device can accurately position the X and Y directions, and the vertically arranged stiffening plates can accurately position the Z direction. The method has a simple structure, is easy to operate, has strong practicality, and has a low production cost, which significantly reduces construction costs and improves the installation efficiency and installation accuracy of the steel columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a positioning schematic diagram of the present invention.

[0014] Figure 2 This is a top view of the steel column positioning according to the present invention.

[0015] Figure 3 This is a schematic diagram of the positioning of the lattice columns described in an embodiment of the present invention.

[0016] Figure 4 This is a three-dimensional diagram of the positioning of the lattice columns described in an embodiment of the present invention.

[0017] Figure 5 Schematic diagram of the wedge block described in the present invention.

[0018] List of Figure Symbols: 1. Steel column, 2. Ear plate, 3. Stiffener plate, 4. Anchor bolt, 5. Wedge block, 6. Mortar, 7. Positioning hole, 8. Lattice column. DETAILED DESCRIPTION

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Example

[0020] Taking I-beam as an example, the vertical positioning method of steel column is as follows: (1) Make an adjustment device The adjustment device includes a connecting plate assembly and an anchor bolt 4. The connecting plate assembly includes a horizontally arranged ear plate 2 and a vertically arranged stiffening plate 3. The rear end of the ear plate is provided with a positioning hole 7. The stiffening plate 3 is vertically arranged at the front end of the ear plate 2. The stiffening plate 3 is perpendicular to the ear plate 2. The stiffening plate 3 is flush with the front edge of the ear plate 2. The upper end of the anchor bolt 4 is provided with a thread, and the outer diameter of the thread is smaller than the aperture of the positioning hole 7. The adjusting devices are provided in a set in four pieces and are applied to the four sides of the I-beam (two flanges and both sides of the web) respectively.

[0021] (2) If Figure 1 As shown, an inverted truncated cone-shaped pit is left on the foundation; (3) Fix the lower end of the anchor bolt in the edge of the foundation (cup mouth); (4) Lift one end of the I-beam with a crane and place it into the cup mouth. Place an inclined wedge 5 in the space between the edge of the pit and the I-beam. (5) After the I-beam is preliminarily adjusted by adjusting the tightness of the wedge, the upper end of the anchor bolt 4 is inserted into the positioning hole 7, and the front edge of the stiffening plate 3 and the ear plate 2 are attached to the side of the I-beam (four adjustment devices are set on the four sides of the I-beam, such as Figure 2 shown); (6) Use two theodolites to check the verticality of the two adjacent sides of the steel column. When the requirements are met, fix the connecting plate assembly with nuts, remove the wedge block, and complete the positioning.

[0022] like Figure 5 As shown, the wedge block 5 of the present invention is a right-angled triangle (or trapezoidal) structure made of steel plates, wherein the right-angled side is attached to the side of the steel column and the oblique side is stuck at the edge of the foundation.

[0023] The anchor bolt 4 of the present invention is an expansion screw, which is convenient and practical to install.

[0024] The installation position of the stiffening plate 3 described in the present invention coincides with the center line of the I-beam flange and the web. On the one hand, it is convenient to observe whether the ear plate is in place in the X and Y directions (if there is a gap between one end of the ear plate and the I-beam flange, it means that it is not in place in the X direction. Similarly, if there is a gap between one end of the ear plate and the I-beam web in the other direction, it means that it is not in place in the Y direction). On the other hand, the stiffening plate 3 is set in the middle position to play a supporting and balancing role to the greatest extent. Example

[0025] The steel column is a lattice column structure composed of two I-beams. Figure 3 and 4 shown.

[0026] The adjustment device described in this embodiment requires 6 pieces, of which 4 are required for the wing plates and one is placed on each side of the web, which can quickly fix the steel column base in the foundation to complete the positioning.

[0027] It should be noted that the above content merely illustrates the technical idea of ​​the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications all fall within the scope of protection of the claims of the present invention.

Claims

1. A method for quickly positioning a cup-shaped inserted steel column, characterized in that: The following steps are involved: (1) Make an adjustment device The adjustment device includes a connecting plate assembly and an anchor bolt, the connecting plate assembly includes a horizontally arranged ear plate and a vertically arranged stiffening plate, the rear end of the ear plate is provided with a positioning hole, the stiffening plate is vertically arranged at the front end of the ear plate, the stiffening plate is perpendicular to the ear plate, the stiffening plate is flush with the front edge of the ear plate, the upper end of the anchor bolt is provided with a thread, the outer diameter of the thread is smaller than the aperture of the positioning hole; (2) Leave an inverted cone-shaped pit on the foundation; (3) Fix the lower end of the anchor bolt to the edge of the foundation; (4) Lift one end of the steel column with a crane and place it into the cup mouth. Place an inclined wedge in the space between the edge of the pit and the steel column. (5) After initially adjusting the steel column with the wedge, insert the upper end of the anchor bolt into the positioning hole, and make the front edges of the stiffening plate and the ear plate stick to the side of the steel column; (6) Use two theodolites to check the verticality of the two adjacent sides of the steel column. When the requirements are met, fix the connecting plate assembly with nuts, remove the wedge block, and complete the positioning.

2. The method for quickly positioning a cup-shaped inserted steel column according to claim 1, characterized in that: The wedge block is a right-angled triangle structure made of steel plates, wherein the right-angled side is attached to the side of the steel column and the oblique side is stuck at the edge of the foundation.

3. The method for quickly positioning a cup-shaped steel column according to claim 1, characterized in that: The steel column is a single steel section or a lattice column structure.

4. The method for quickly positioning a cup-rim inserted steel column according to claim 1, characterized in that: The adjustment device is used symmetrically.

5. The method for quickly positioning a cup-rim inserted steel column according to claim 1, characterized in that: The anchor bolt is an expansion screw.

6. The method for quickly positioning a cup-rim inserted steel column according to claim 1, characterized in that: The stiffening plate is aligned with the center line of the side surface of the steel column.

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