Column base joint of building steel column

Abstract

The utility model discloses a column base node of a building steel column. The column base node comprises a concrete base, an embedded part is arranged in the concrete base, a shear key is welded to the embedded part, and the shear key is embedded in the concrete base. A short steel column is welded to the upper portion of an embedded plate of the embedded part, and the short steel column is sleeved with a steel column. And the short steel columns and the steel columns are connected with bolts. According to the embedded part, the design requirement can be met, the field welding amount can be reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, in particular to a column foot node of a building steel column. Background Art

[0002] With the rapid development of steel structure buildings in my country, steel structures are increasingly widely used in buildings with various functions. Among them, the reliability of the connection nodes at the base of steel columns is crucial to the force safety of steel structure buildings. There are three main types of steel column bases: rigid connection, hinged connection, and semi-rigid connection. In conventional design and construction, the embedded parts at the base of steel columns are generally tied and fixed together with the concrete reinforcement of the support. However, this method will involve a large amount of on-site welding when the steel columns are subsequently installed, and the steel columns need to be temporarily fixed during welding. Especially for projects with a large number of steel columns, the amount of welding is huge, which has a great impact on the construction period. If only the anchor bolt frame is constructed into a concrete support in advance, and the anchor plate and steel column are transported to the site for installation together, when the design requires shear keys, the shear keys cannot be buried.

[0003] In view of the above problems, a steel column base node method is proposed, which can meet the embedded parts required by the design, reduce the amount of welding on site, and save construction time. Utility Model Content

[0004] The utility model aims to provide a building steel column foot node to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a building steel column foot node, comprising a concrete base;

[0006] The concrete base is provided with an embedded part, a shear key is welded on the embedded part, and the shear key is embedded in the concrete base;

[0007] A short steel column is welded above the embedded plate of the embedded part, and a steel column is connected to the outer surface of the short steel column;

[0008] The short steel columns and the steel columns are connected with bolts.

[0009] Preferably, the outer diameter of the cross-section of the short steel column is 2 mm smaller than the inner diameter of the steel column.

[0010] Preferably, two bolt holes are provided on both sides of the short steel column and the steel column, and the same bolt is installed in the four bolt holes located on the same horizontal plane, and a nut is connected to one end of the bolt.

[0011] Preferably, a gasket is sleeved on the bolt, and the gasket is in contact with the nut.

[0012] Preferably, the embedded part is a horizontal part and a plurality of vertical parts installed at the bottom of the horizontal part, and the shear key is installed on the horizontal part of the embedded part.

[0013] Preferably, the embedded parts are tied and fixed synchronously with the steel bars of the concrete base.

[0014] Preferably, the short steel columns and the steel columns are both inverted U-shaped structures.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Solve the problem of large-scale on-site welding of steel column bases;

[0017] 2. Embed the shear key in advance to reduce the subsequent secondary pouring work;

[0018] 3. Easy to disassemble without damaging the original structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] In the figure: 1. Concrete base; 2. Embedded parts; 3. Shear keys; 4. Short steel columns; 5. Bolts; 6. Gaskets; 7. Steel columns. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , the utility model provides a technical solution: a building steel column foot node, including a concrete base 1;

[0023] An embedded part 2 is provided in the concrete base 1, a shear key 3 is welded on the embedded part 2, and the shear key 3 is embedded in the concrete base 1;

[0024] A short steel column 4 is welded above the embedded plate of the embedded part 2, and a steel column 7 is connected to the outer shell of the short steel column 4;

[0025] Bolts 5 are connected to the short steel column 4 and the steel column 7 .

[0026] Combination Figure 1 As shown, the outer diameter of the cross section of the short steel column 4 is 2 mm smaller than the inner diameter of the steel column 7.

[0027] Combination Figure 1As shown, two bolt holes are provided on both sides of the short steel column 4 and the steel column 7, and the same bolt 5 is installed in the four bolt holes located on the same horizontal plane, and a nut is connected to one end of the bolt 5.

[0028] Combination Figure 1 As shown, a gasket 6 is sleeved on the bolt 5, and the gasket 6 is in contact with the nut.

[0029] Combination Figure 1 As shown, the embedded component 2 is a horizontal component and a plurality of vertical components installed at the bottom of the horizontal component, and the shear key 3 is installed on the horizontal component of the embedded component 2.

[0030] Combination Figure 1 As shown, the embedded parts 2 are tied and fixed synchronously with the steel bars of the concrete base 1.

[0031] Combination Figure 1 As shown, the short steel column 4 and the steel column 7 are both inverted U-shaped structures.

[0032] The working principle of the utility model is as follows: the shear key is made into one piece with the embedded part, and at the same time, a short steel column is welded and added above the embedded plate when the embedded plate is made in the factory. The outer diameter of the cross-section of the short steel column is 2mm smaller than the inner diameter of the steel column to be installed later; bolt holes are reserved for the short steel column according to design requirements; during on-site construction, the embedded parts with short steel columns processed in the factory are synchronously tied and fixed with the steel bars of the concrete base; bolt holes are opened in advance at the upper steel column section at the corresponding short steel column position; after the concrete is poured and reaches 75% of the strength, the upper steel column section is inserted, and after positioning and leveling, the bolts are inserted and the nuts are tightened.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A building steel column foot node, characterized in that: comprising a concrete base (1); An embedded part (2) is provided in the concrete base (1), a shear key (3) is welded to the embedded part (2), and the shear key (3) is embedded in the concrete base (1); A short steel column (4) is welded above the embedded plate of the embedded part (2), and a steel column (7) is connected to the outer shell of the short steel column (4); The short steel column (4) and the steel column (7) are connected with bolts (5).

2. A building steel column foot node according to claim 1, characterized in that: The outer diameter of the cross section of the short steel column (4) is 2 mm smaller than the inner diameter of the steel column (7).

3. A building steel column foot node according to claim 1, characterized in that: Two bolt holes are provided on both sides of the short steel column (4) and the steel column (7), and a bolt (5) is installed in the four bolt holes located on the same horizontal plane, and a nut is connected to one end of the bolt (5).

4. The building steel column foot node according to claim 1, characterized in that: A gasket (6) is sleeved on the bolt (5), and the gasket (6) is in contact with the nut.

5. The building steel column foot node according to claim 1, characterized in that: The embedded component (2) comprises a horizontal component and a plurality of vertical components installed at the bottom of the horizontal component, and the shear key (3) is installed on the horizontal component of the embedded component (2).

6. A building steel column foot node according to claim 1, characterized in that: The embedded parts (2) are synchronously tied and fixed with the steel bars of the concrete base (1).

7. The building steel column foot node according to claim 1, characterized in that: The short steel column (4) and the steel column (7) are both inverted U-shaped structures.

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