Novel method for manufacturing hinged column foot of box column

Abstract

The invention provides a method for manufacturing a hinged column foot of a novel box column. Comprising the following steps: step 1, welding a finished box column: sequentially welding and connecting an upper box column (1), a conversion steel plate (2), transition section H-shaped steel (3) and a column base bottom plate (4) from top to bottom; step 2, paying off at the top of a concrete column on which the steel column is to be mounted, and implanting a connecting bolt (5); and 3, the welded finished box column is fixed through a connecting bolt (5). The bolts are retracted into the section range of the concrete column, so that the problem that the connecting bolts protrude out of the ground too high during ground pavement is avoided, and the top of the lower-layer concrete column with a small section is perfectly connected with the box-shaped column; the method is easy to operate, safe and reliable.

Description

Technical Field

[0001] The invention relates to the field of construction industry, and in particular to a novel method for hinged column foot of a box-type column. Background Art

[0002] In building renovation projects, it is common to encounter the situation of adding floors to buildings. Steel structures are widely used in floor-adding projects due to their advantages such as high strength, light weight, homogeneous materials, good toughness, and mechanized manufacturing and installation. In terms of the selection of steel column cross-sectional forms, box columns and H-columns with the same external cross-sectional dimensions have more advantages in bidirectional bending stiffness and bearing capacity, so box columns are often used as the preferred cross-sectional form. Considering the stress conditions of the lower structure, the base of steel structure columns sometimes adopts hinged nodes; the first is: the hinged column base of the box column is to set a connecting bolt on each side of the H-column, see Figure 1 The second method is: the articulated column foot method of the H-type column is to set a connecting bolt on each side of the column web, see Figure 2 .

[0003] However, the hinged column base methods of the above two types of steel columns still have the following deficiencies: in the hinged column base method of the box-type column, the connecting bolts of the column base of the box-type column occupy a larger space. If the cross-section of the lower column is not large enough, there is a phenomenon that the bolts cannot be fixed within the cross-section of the lower column; in the hinged column base method of the H-type column, the connecting bolts of the column base of the H-type column occupy a small space and can be effectively fixed within the cross-section of the lower column, but the H-type column has deficiencies in bidirectional bending stiffness and bearing capacity.

[0004] Based on the above technical deficiencies, there is an urgent need for a method that satisfies the deficiencies of the above two methods at the same time. Summary of the invention

[0005] The purpose of the invention is to provide a novel method for hinged column foot of box-type column.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention relates to a novel method for making a hinged column foot of a box-type column, comprising the following steps:

[0008] Step 1, welding of finished box-type columns: from top to bottom, the upper box-type column 1, the conversion steel plate 2, the transition section H-shaped steel 3, and the column foot bottom plate 4 are welded and connected in sequence;

[0009] Step 2, laying out the top of the concrete column where the steel column is to be installed, and implanting the connecting bolts 5;

[0010] Step 3, fix the welded finished box column with connecting bolts 5.

[0011] Preferably, in step 1, the upper box column 1 is welded to the transition section H-shaped steel 3 through the conversion steel plate 2.

[0012] Preferably, the upper end surface of the transition section H-shaped steel 3 is welded to the conversion steel plate 2 ; and the lower end surface thereof is welded to the column foot bottom plate 4 .

[0013] Preferably, in step 1 , a through hole 8 is provided on the column foot bottom plate 4 , wherein the hole diameter of the through hole 8 is 2 mm larger than the diameter of the bolt 5 .

[0014] Preferably, the through hole 8 is connected with the connecting bolt 5 in cooperation; the present invention retracts the bolt 5 into the range of the column cross section to avoid the problem of the connecting bolt protruding too high from the ground when the ground is paved.

[0015] Preferably, in step 3, after the connecting bolt 5 passes through the through hole 8 on the finished box column, the backing plate 6 is installed and then fixed with the nut 7.

[0016] Preferably, the height of the transition section H-shaped steel 3 is 200 mm.

[0017] Preferably, the thickness of the conversion steel plate 2 is 25 mm.

[0018] Preferably, the thickness of the column foot bottom plate 4 is 25 mm.

[0019] The present invention has the following advantages:

[0020] (1) The hinged column foot method of a new type of box-type column involved in the present invention perfectly solves the problem of connecting the top of the lower column with a small cross-section to the box-type column;

[0021] (2) The hinged column foot method of a novel box-type column involved in the present invention retracts the bolts into the column cross section, thereby avoiding the problem of the connecting bolts protruding too high from the ground when the ground is paved.

[0022] (3) The hinged column foot method of the new box-type column involved in the present invention is simple to operate, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the articulated column foot method of a box column in the prior art;

[0024] Figure 2 It is a structural diagram of the articulated column foot method of an H-shaped column in the prior art;

[0025] Figure 3 This is the structural diagram of the finished box column;

[0026] Figure 4 It is a schematic diagram of inserting connecting bolts into the concrete column where the steel column is to be installed;

[0027] Figure 5 It is a structural diagram after the present invention is installed;

[0028] Figure 6 It is an exploded view of the overall structure of the present invention;

[0029] The attached drawings are marked with: 1-upper box column, 2-conversion steel plate, 3-transition section H-shaped steel, 4-column foot plate, 5-connecting bolts, 6-pad, 7-nuts, 8-through holes. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with specific embodiments. It should be noted that the following embodiments are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Example

[0032] This embodiment relates to a novel method for forming a hinged column foot of a box-type column, comprising the following steps:

[0033] Step 1, welding of finished box-shaped columns: from top to bottom, weld the upper box-shaped column 1, the conversion steel plate 2, the transition section H-shaped steel 3, and the column foot bottom plate 4 in sequence; see Figure 3 , Figure 6 As shown; the upper box column 1 is welded to the transition section H-shaped steel 3 through the conversion steel plate 2; the upper end surface of the transition section H-shaped steel 3 is welded to the conversion steel plate 2; its lower end surface is welded to the column foot bottom plate 4; a through hole 8 is provided on the column foot bottom plate 4; the height of the transition section H-shaped steel 3 is 200mm; the thickness of the conversion steel plate 2 is 25mm, and the thickness of the column foot bottom plate 4 is 25mm.

[0034] Step 2: Lay out the top of the concrete column where the steel column is to be installed, and implant the connecting bolts 5, and the through holes 8 are connected with the connecting bolts 5; Figure 4 As shown; the present invention retracts the bolt 5 into the column cross section to avoid the problem of the connecting bolt protruding too high from the ground when the ground is paved.

[0035] Step 3: After the welded finished box column passes through the through hole 8 on the finished box column through the connecting bolt 5, the backing plate 6 is installed and fixed with the nut 7 to complete the installation. Figure 5 shown.

[0036] The invention relates to a novel articulated column foot method for a box-type column, which retracts the bolts into the column cross section, thereby avoiding the problem of the connecting bolts protruding too high from the ground when the ground is paved, and perfectly solves the problem of connecting the box-type columns at the top of the lower columns with small cross sections; the invention is simple to operate, safe and reliable.

[0037] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which will not affect the essence of the present invention.

Claims

1. A new type of hinged column foot method for box-type columns, characterized in that: The following steps are involved: Step 1, welding of finished box-shaped columns: from top to bottom, sequentially weld and connect the upper box-shaped column (1), the conversion steel plate (2), the transition section H-shaped steel (3), and the column foot bottom plate (4); Step 2, laying out the top of the concrete column where the steel column is to be installed, and implanting the connecting bolts (5); Step 3, fix the welded finished box column by connecting bolts (5).

2. The hinged column foot method of the new box column as claimed in claim 1 is characterized in that: In step 1, the upper box column (1) is welded to the transition section H-shaped steel (3) via the conversion steel plate (2).

3. The hinged column foot method of the new box column as claimed in claim 2 is characterized in that: The upper end surface of the transition section H-shaped steel (3) is welded to the conversion steel plate (2); and the lower end surface thereof is welded to the column foot bottom plate (4).

4. The hinged column foot method of the new box column as claimed in claim 1 is characterized in that: In step 1, a through hole (8) is provided on the column foot bottom plate (4), wherein the hole diameter of the through hole (8) is 2 mm larger than the diameter of the bolt (5).

5. The hinged column foot method of the new box column as claimed in claim 4 is characterized in that: The through hole (8) is cooperatively connected with the connecting bolt (5).

6. The hinged column foot method of the new box column as claimed in claim 1 is characterized in that: In step 3, after the connecting bolts (5) pass through the through holes (8) on the finished box-shaped columns, the backing plates (6) are installed and then fixed with nuts (7).

7. The method for articulating the column foot of the new box-type column as claimed in claim 1 is characterized in that: The height of the transition section H-shaped steel (3) is 200 mm.

8. The hinged column foot method of the new box column as claimed in claim 1 is characterized in that: The thickness of the conversion steel plate (2) is 25 mm.

9. The method for articulating the column foot of the new box-type column as claimed in claim 1 is characterized in that: The thickness of the column foot bottom plate (4) is 25 mm.

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