Connecting joint of steel column, steel bracket and steel roof truss

Abstract

The invention discloses a connecting joint of a steel column, a steel bracket and a steel roof truss, which comprises the steel column made of H-shaped steel. A steel bracket is arranged on one side or two sides of a web plate of the steel column and is vertical to the web plate; a steel roof truss is arranged on one side of one flange plate of the steel column and is vertical to the flange plate; two vertical stiffening ribs are arranged on the two sides of a web plate on the top of the steel column at intervals, and the steel bracket is connected to the web plate between the two vertical stiffening ribs. Compared with a traditional joint, the strength and stability of the top of the steel column can be improved; node force transmission is clear, and stress is simple and reasonable; the installation error can be adjusted, and the stress generated by deformation is reduced; therefore, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure nodes, in particular to a connection node between a steel column, a steel bracket and a steel roof truss. Background Art

[0002] In steel structure workshops, the connection nodes of steel columns, steel brackets and steel roof trusses are important parts for bearing and transmitting force. Traditional connection node designs usually include multiple complex components and connection methods, which makes the construction process cumbersome and prone to installation errors. In large-span industrial buildings, the bearing capacity and stability of the top nodes of steel columns are particularly critical, but the connection methods commonly used in the prior art are prone to local instability when subjected to concentrated loads, resulting in reduced node strength. Especially in the case of single-sided steel roof trusses and single-sided steel brackets, the top of the column bears a large eccentric load, and the top of the column is more prone to instability. In addition, traditional node designs are usually unable to effectively adapt to dimensional deviations during the installation of steel brackets and steel roof trusses, increasing construction difficulty and cost. Therefore, how to simplify the design of the connection nodes of steel columns, steel brackets and steel roof trusses, ensure their stability under complex stress conditions, and improve construction efficiency has become an important technical problem in steel structure design. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide a connection node between a steel column, a steel bracket and a steel roof truss which has a simple structure, is convenient to construct and has reasonable stress.

[0004] To achieve the above-mentioned purpose, the connection node between the steel column, the steel bracket and the steel roof truss of the present invention includes a steel column, wherein the steel column is an H-shaped steel; a steel bracket is arranged perpendicular to the web on one side or both sides of the web of the steel column; a steel roof truss is arranged perpendicular to the flange plate on one side of a flange plate of the steel column; two vertical stiffening ribs are arranged at intervals on both sides of the web of the top of the steel column, and the steel bracket is connected to the web between the two vertical stiffening ribs.

[0005] Furthermore, the steel bracket comprises an upper chord and a lower chord, wherein a support plate is arranged between the upper chord and the web of the steel bracket.

[0006] Furthermore, the lower chord of the steel bracket is arranged on the web of the steel column through a connecting plate.

[0007] Furthermore, a U-shaped groove is arranged upwardly in the middle of the lower end of the support plate.

[0008] Furthermore, the top of the steel column is partially chamfered, and there are two pre-welded cover plates and one post-welded cover plate on the top of the column. The steel roof truss is installed on the post-welded cover plates. The lower chord of the steel roof truss is provided with an elliptical hole, and the lower chord of the steel roof truss is connected to the flange of the steel column through a connecting plate.

[0009] Furthermore, the vertical stiffening rib is spaced a predetermined distance from the support plate.

[0010] According to the connection node of the steel column, the steel bracket and the steel roof truss described in claim 1, it is characterized in that the top of the bracket plate and the web of the steel column are not welded.

[0011] Furthermore, transverse stiffening ribs are provided on the web between the vertical stiffening ribs 4 and the steel column flanges at a height corresponding to the support plate.

[0012] Furthermore, support plate stiffening ribs are arranged between the vertical stiffening ribs 4 on the back side of the support plate.

[0013] Furthermore, a steel bracket stiffening rib is provided on the back side of the web of the steel column corresponding to the lower chord of the steel bracket.

[0014] The present invention takes into account the large force at the nodes between the steel column, the steel bracket and the steel roof truss, and adds vertical stiffening ribs, which can significantly increase the stability of the steel column web, improve the bearing capacity and deformation resistance of the node, and prevent the web from becoming unstable after bearing a large load. Compared with traditional nodes, the present invention can increase the strength and stability of the top of the steel column; the node has clear force transmission and simple and reasonable force; it can also adjust the installation error and reduce the stress caused by deformation; the construction is more convenient, thereby improving construction efficiency and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the connection between the steel column and the steel bracket;

[0017] Figure 2 This is a schematic diagram of the connection between steel columns and steel roof trusses;

[0018] Figure 3 for Figure 1 AA section view;

[0019] Figure 4 for Figure 1 BB cross-sectional view;

[0020] Figure 5 for Figure 1 CC cross-sectional view.

[0021] Figure 6 for Figure 3 DD cross-sectional view.

[0022] Figure 7 This is a positional relationship diagram of the steel columns, steel brackets and steel roof trusses in the present invention.

[0023] Steel column 1, steel bracket 2, steel roof truss 3, vertical stiffening ribs 4, support plate 5, flange plate at local cut corner of column top 6, pre-welded cover plate 7 at column top, post-welded cover plate 8 at column top, steel bracket connecting plate 9, steel bracket connecting plate 10, transverse stiffening plate 11, support plate stiffening plate 12, steel bracket stiffening ribs 13. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 6 As shown, a connection node of a steel column, a steel bracket and a steel roof truss of the present invention comprises a steel column 1, a steel bracket 2 and a steel roof truss 3. The steel column 1 is an H-shaped steel; vertical stiffening ribs 4 are arranged on both sides of the web of the column top. The force at the node between the steel column, the steel bracket and the steel roof truss is relatively large. The addition of vertical stiffening ribs 4 can significantly increase the stability of the web of the steel column, improve the bearing capacity and anti-deformation ability of the node, and prevent the web from becoming unstable after being subjected to a large load.

[0029] A support plate 5 is provided between the vertical stiffening ribs 4; the upper chord of the steel bracket is placed on the support plate 5 through a connecting plate 9. The support plate 5 needs to have a certain thickness to support the connecting plate 9 of the upper chord of the steel bracket. At the same time, in order to facilitate the transmission of the upper chord force of the steel truss, the top of the support plate 5 needs to be planed, and the top of the support plate 5 is not welded to the web of the steel column. The setting of the support plate 5 makes the force transmission of the steel bracket simple and clear. In order to ensure the transmission of force, a U-shaped groove is provided upward in the middle of the lower end of the support plate, and the edge of the U-shaped groove is welded to the web.

[0030] The steel bracket upper chord connecting plate 9 is connected to the steel column web by bolts; the support plate 5 is connected to the steel column 1 web by welds; the vertical stiffening ribs 4 on both sides of the column top web are connected to the steel column 1 web by welds. Therefore, a certain clearance is required between the vertical stiffening ribs 4 on both sides of the column top web and the support plate 5 to facilitate the construction of welds and the installation of bolts.

[0031] The vertical stiffening ribs 4 on both sides of the column top web are relatively long and are only constrained in two directions, namely, the web and the column top plate, and are free in the other two directions. To improve the stability of the vertical stiffening ribs 4 on both sides of the column top web, stiffening ribs 11 are provided between the vertical stiffening ribs 4 and the steel column flange at the height of the support plate 5. For a single-sided steel bracket, support plate stiffening ribs 12 are provided between the vertical stiffening ribs 4 on the back of the support plate 5.

[0032] The lower chord of the steel bracket 2 is connected to the web of the steel column 1 through a connecting plate. Figure 5 As shown, the steel column 1 is provided with a steel bracket stiffening rib 13 at the lower chord of the steel bracket 2. An elliptical hole is opened in the lower chord of the steel bracket 2, and the lower chord can be moved through the elliptical hole, thereby reducing the influence of dimensional deviation on construction, and the deformation of the structure can be effectively controlled, thereby reducing the stress caused by deformation and ensuring the safety and stability of the structure.

[0033] The top of the steel column is partially cut at an angle, and the flange plate 6 at the angle prevents the diagonal web of the steel roof truss from colliding with the steel column. The size of the top angle can be determined after the position and size of the diagonal web of the steel roof truss 3 and the steel column 1 are set out.

[0034] The top of the steel column has two pre-welded cover plates 7 and one post-welded cover plate 8, and the steel roof truss 3 is installed on the post-welded cover plate 8. To ensure the safety and stability of the post-welded cover plate 8, the top of the vertical connecting plate 10 of the steel bracket is planed and pressed against the lower surface of the post-welded cover plate 8. The post-welded cover plate 8 on the top of the steel column is connected to the two pre-welded cover plates 7 on the top of the steel column through a weld. To ensure that the post-welded cover plate 8 is in close contact with the pre-welded cover plate 7, the tops of the two pre-welded cover plates 7 should be flush.

[0035] The lower chord of the steel roof truss 3 is provided with an elliptical hole, and the lower chord of the steel roof truss is connected to the flange of the steel column through a connecting plate. The lower chord of the steel roof truss 3 can be moved through the elliptical hole, reducing the influence of dimensional deviation on construction, and the deformation of the structure can be effectively controlled, thereby reducing the stress caused by deformation and ensuring the safety and stability of the structure.

[0036] The present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be regarded as the protection scope of the present invention.

[0037] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A connection node between a steel column, a steel bracket and a steel roof truss, characterized in that: It comprises a steel column, which is an H-shaped steel; a steel bracket is arranged perpendicular to the web on one side or both sides of the web of the steel column; a steel roof truss is arranged perpendicular to the flange plate on one side of a flange plate of the steel column; two vertical stiffening ribs are arranged at intervals on both sides of the web of the top of the steel column, and the steel bracket is connected to the web between the two vertical stiffening ribs.

2. The connection node between the steel column, the steel bracket and the steel roof truss as claimed in claim 1, characterized in that: The steel bracket comprises an upper chord and a lower chord, wherein a support plate is arranged between the upper chord and the web of the steel bracket.

3. The connection node between the steel column, the steel bracket and the steel roof truss as claimed in claim 2, characterized in that: The lower chord of the steel bracket is arranged on the web of the steel column through a connecting plate.

4. The connection node between the steel column, the steel bracket and the steel roof truss as claimed in claim 2, characterized in that: A U-shaped groove is arranged upwardly in the middle of the lower end of the support plate.

5. The connection node between the steel column, the steel bracket and the steel roof truss as claimed in claim 1, characterized in that: The top of the steel column is partially chamfered, and has two pre-welded cover plates and one post-welded cover plate. The steel roof truss is installed on the post-welded cover plates. The lower chord of the steel roof truss is provided with elliptical holes, and the lower chord of the steel roof truss is connected to the flange of the steel column through a connecting plate.

6. The connection node between a steel column, a steel bracket and a steel roof truss according to claim 1, characterized in that: The vertical stiffening rib is spaced a predetermined distance from the support plate.

7. The connection node between a steel column, a steel bracket and a steel roof truss according to claim 1, characterized in that: The top of the support plate is not welded to the web of the steel column.

8. The connection node of a steel column, a steel bracket and a steel roof truss according to claim 1, characterized in that: Transverse stiffening ribs are arranged on the web between the vertical stiffening ribs 4 and the steel column flanges at a position corresponding to the support plate height.

9. The connection node of a steel column, a steel bracket and a steel roof truss according to claim 1, characterized in that: Support plate stiffening ribs are arranged between the vertical stiffening ribs 4 on the back side of the support plate.

10. The connection node of a steel column, a steel bracket and a steel roof truss according to claim 1, characterized in that: The back side of the web of the steel column corresponding to the lower chord of the steel bracket is provided with a steel bracket stiffening rib.

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