Fabricated steel frame beam-column joint

Abstract

The utility model discloses an assembly type steel frame beam column joint which comprises a steel column and a steel beam assembly connected to the side wall of the steel column in a clamped mode, a fixing plate used for being connected with the steel beam assembly in a clamped mode is arranged on the side wall of the steel column, and a wedge-shaped shear key is arranged on the fixing plate. The steel beam assembly comprises an H-shaped steel beam and an end plate arranged at the end of the H-shaped steel beam, a shear-resistant groove used for being matched with the wedge-shaped shear-resistant key in a clamped mode is formed in the end face, facing the steel column, of the end plate, a connecting piece is arranged on the wedge-shaped shear-resistant key, a first mounting hole matched with the connecting piece is formed in the shear-resistant groove, and a second mounting hole matched with the connecting piece is formed in the end face, facing the steel column, of the end plate. The end plate is fixedly connected with the fixed plate through the connecting piece; the assembly type steel frame beam-column joint is good in overall performance, high in strength, good in anti-seismic performance, convenient in component machining and hoisting and high in construction speed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure beam-column assembly, in particular to an assembled steel frame beam-column node. Background Art

[0002] The steel beams and columns used in the main steel frame of traditional buildings are assembled on site, mostly by welding or bolting. They have the advantages of diverse plane designs, good overall performance, and large allowable errors. However, after the steel beams are hoisted into place, they need to be fixed by installing bolts or setting supports, and then the flanges are welded and connected. There are many types of work, complicated processes, and slow construction speed. With the gradual acceleration of the process of building industrialization, the disadvantages of traditional steel structures connected by welding or bolting are becoming increasingly significant, such as long construction periods and welding being greatly affected by weather. In addition, the traditional steel structure connection nodes are equipped with internal partitions inside the steel columns and steel brackets for connecting steel beams outside the steel columns. Such connection nodes have problems such as complex processing and manufacturing, high production costs, irregular stacking of components due to the presence of steel brackets during transportation, few components transported by a single vehicle, and inconvenient hoisting.

[0003] Therefore, in order to solve the above problems, it is necessary to improve the existing assembled steel frame beam-column node structure. Utility Model Content

[0004] In view of this, the assembled steel frame beam-column node provided by the utility model realizes the rapid installation and positioning of the steel column and steel beam assembly by utilizing the wedge-shaped shear keys on the prefabricated steel columns and the shear grooves on the prefabricated steel beam assemblies to engage with each other, and does not require additional support. The wedge-shaped shear keys and the shear grooves are then connected by bolts to realize the installation and fixation of the steel column and steel beam assembly; and adjacent steel beam assemblies can be directly connected and fixed to each other by bolt pairs, and finally an assembled steel frame beam-column node is formed; the assembled steel frame beam-column node has good overall performance, high strength, good seismic performance, convenient component processing, convenient hoisting, and fast construction speed.

[0005] The utility model provides an assembled steel frame beam-column node, comprising a steel column and a steel beam assembly clamped on the side wall of the steel column, the side wall of the steel column is provided with a fixing plate for clamping the steel beam assembly, the fixing plate is provided with a wedge-shaped shear key, the steel beam assembly comprises an H-shaped steel beam and an end plate arranged at the end of the H-shaped steel beam, the end plate is provided with a shear groove for clamping and cooperating with the wedge-shaped shear key on the end face facing the steel column, the wedge-shaped shear key is provided with a connecting piece, the shear groove is provided with a first mounting hole adapted to the connecting piece, and the end plate is fixedly connected to the fixing plate via the connecting piece.

[0006] Furthermore, the end plate is a shield-shaped structure and includes a middle web and flanges on both sides. The two flanges are symmetrically arranged to be inclined outward relative to the web. A plurality of second mounting holes are arranged on the flanges in the vertical direction. The end plates of adjacent steel beam assemblies are connected and fixed by bolts penetrating the second mounting holes of the two.

[0007] Furthermore, the steel column is a square steel tube column and has a through cavity structure without partitions.

[0008] Furthermore, the fixing plate and the wedge-shaped shear key are integrally formed and fixed to the surrounding side walls of the square steel pipe column by welding.

[0009] Furthermore, the concave surface of the web of the end plate is welded and fixed to the upper flange, lower flange and web of the H-shaped steel beam.

[0010] Furthermore, the upper end of the end plate extends out of the upper flange of the H-shaped steel beam, and the lower end of the end plate extends out of the lower flange of the H-shaped steel beam.

[0011] Furthermore, the width of the web is set to be the same as the width of the side wall of the steel column.

[0012] The beneficial effects of the utility model are as follows: the assembled steel frame beam-column node of the utility model realizes the rapid installation and positioning of the steel column and the steel beam assembly by utilizing the wedge-shaped shear keys on the prefabricated steel columns and the shear grooves on the prefabricated steel beam assemblies to engage with each other, and no additional support is required; the wedge-shaped shear keys and the shear grooves are then connected by bolts to realize the installation and fixation of the steel column and the steel beam assembly, the shear force transmission of the node is direct, and the force bearing performance is good; after the four-sided steel beams are hoisted, the shield-shaped end plates can wrap the steel columns around the steel columns, the stiffness at the nodes is large, and the overall connection performance is good; the shield-shaped end plates of adjacent steel beams can be directly connected at the corners by bolt pairs, the connection structure and installation process are simple, and the force transmission is reliable; therefore, the assembled steel frame beam-column node has good overall performance, high strength, good seismic performance, convenient component processing, convenient hoisting, and fast construction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of the assembled steel frame beam-column node in the utility model;

[0015] Figure 2 It is a structural schematic diagram of the steel beam assembly in the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the steel column in the utility model;

[0017] Figure 4It is a structural top view of the assembled steel frame beam-column node in the utility model;

[0018] In the figure: 1-steel column; 2-steel beam assembly; 3-bolt; 4-bolt pair; 5-end plate; 6-shear groove; 7-first mounting hole; 8-web; 9-flange; 10-second mounting hole; 11-H-shaped steel beam; 12-fixing plate; 13-wedge-shaped shear key; 14-third mounting hole. DETAILED DESCRIPTION

[0019] As shown in the figure, the utility model provides an assembled steel frame beam-column node, including a steel column 1 and a steel beam assembly 2 clamped on the side wall of the steel column, the side wall of the steel column is provided with a fixing plate 12 for clamping the steel beam assembly 2, and the fixing plate 12 is provided with a wedge-shaped shear key 13, the steel beam assembly 2 includes an H-shaped steel beam 11 and an end plate 5 arranged at the end of the H-shaped steel beam 11, the end plate 5 is provided with a shear groove 6 for clamping and cooperating with the wedge-shaped shear key 13 on the end face facing the steel column 1, the wedge-shaped shear key 13 is provided with a connecting piece, the shear groove 6 is provided with a first mounting hole 7 adapted to the connecting piece, and the end plate 5 is fixedly connected to the fixing plate 12 through the connecting piece; after the steel column 1 and the steel beam assembly 2 are processed in the factory, they are transported to the construction site, and after the steel column 1 with the wedge-shaped shear key 13 is hoisted into place, the steel beam assembly 2 with the shear groove 6 is hoisted to the steel column 1 The shear groove 6 is aligned with the wedge-shaped shear key 13 and directly falls into the wedge-shaped shear key 13 outside the steel column 1. After falling, it is directly placed on the wedge-shaped shear key 13 without supporting the steel beam assembly 2. When the four-side steel beam assembly 2 is hoisted, the end plate 5 on the steel beam assembly 2 can wrap the steel column 1 around the steel column 1, the stiffness at the node is large, and the overall connection performance is good; the end plate 5 at the end of the H-shaped steel beam 11 is provided with an anti-shear key 13 meshing with the wedge-shaped shear key 13 on the side wall of the steel column. The shear groove 6, the size and position of the groove need to be determined according to the size and position of the wedge-shaped shear key 13. The shear key 6 is provided with a first mounting hole (i.e., a fixing bolt hole). When the steel beam assembly 2 is placed on the wedge-shaped shear key 13, the wedge-shaped shear key 13 and the shield-shaped end plate are fixedly connected by bolts 3. The node has direct shear force transmission and good force-bearing performance. Therefore, the assembled steel frame beam-column node has good overall performance, high strength, good seismic performance, convenient component processing, convenient lifting, and fast construction speed.

[0020] In this embodiment, the end plate 5 is a shield-shaped structure and includes a middle web 8 and flanges 9 on both sides. The two flanges 9 are symmetrically arranged outwardly with respect to the web 8. A plurality of second mounting holes 10 are arranged on the flanges 9 in the vertical direction. The end plates of the adjacent steel beam assemblies 2 are connected and fixed after the bolt pairs 4 penetrate the second mounting holes 10 of the two. The end plate 5 is a shield-shaped structure and includes a middle web 8 and flanges 9 on both sides. The web 8 is arranged perpendicular to the axis of the H-shaped steel beam, and the two sides are provided with a plurality of second mounting holes 10. The flange 9 and the web 8 are spliced ​​at an angle and biased toward the axis side of the steel beam, and the horizontal angle is 135 degrees; the concave surface of the web of the end plate 5 is welded and fixed to the upper flange, lower flange and web of the H-shaped steel beam 11; a plurality of second mounting holes 10 (i.e., bolt holes) are vertically reserved on the flange 9, and the end plates of the adjacent steel beam assemblies 2 are connected and fixed after the bolt pairs 4 penetrate the second mounting holes 10 of the two, and the adjacent end plates 5 are connected at the flange 9 by the bolt pairs 4, and the connection structure and installation process are simple, and the force transmission is reliable.

[0021] In this embodiment, the steel column 1 is a square steel tube column and has a through-cavity structure without partitions inside; the fixing plate 12 and the wedge-shaped shear key 13 are integrally formed and fixed to the four side walls of the square steel tube column by welding; wherein there is no partition in the steel column 1, the cavity inside the column can be through-connected, and the wedge-shaped shear key 13 for placing the steel beam assembly 2 is welded on the side of the steel column, and a third mounting hole 14, i.e., a fixing bolt hole, is provided on the wedge-shaped shear key 13, which is convenient for pouring when a steel tube concrete column is used. Concrete; the vertical position of the wedge-shaped shear key 13 arranged on the outside of the steel column 1 is determined according to the installation elevation of the steel beam assembly 2, and the horizontal position is generally aligned with the center of the steel column 1; the wedge-shaped shear key 13 on the side wall of the steel column is connected to the side wall of the steel column by welding, and the wedge-shaped shear key 13 is processed and manufactured in the factory. The shear key is bored in the center of a whole steel plate by machining. In particular, it is necessary to mill a wedge-shaped cut at a certain angle (the angle is generally 45°) in the thickness direction on both sides of the shear key.

[0022] In this embodiment, the upper end of the end plate 5 extends out of the upper flange of the H-shaped steel beam 11, and the lower end of the end plate 5 extends out of the lower flange of the H-shaped steel beam 11; the force magnitudes of the end plate 5 when connected to different steel columns 1 are different, so the upper and lower sections of the end plate 5 extend out of the upper and lower flanges of the H-shaped steel beam 11 by a certain height respectively, and the upper and lower end plates extending outside the flanges can be provided with one row or two rows or more of bolt holes, which is specifically determined according to the force requirements.

[0023] In this embodiment, the width of the web 8 is set to be the same as the side wall of the steel column 1; in order to enable the end plate 5 to wrap the steel column 1 along all four sides, thereby ensuring a large stiffness at the node and good overall connection performance, the width of the web 8 on the end plate 5 is set to be the same as the side wall of the steel column 1.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An assembled steel frame beam-column node, characterized in that: It includes a steel column and a steel beam assembly clamped on the side wall of the steel column, the side wall of the steel column is provided with a fixing plate for clamping the steel beam assembly, the fixing plate is provided with a wedge-shaped shear key, the steel beam assembly includes an H-shaped steel beam and an end plate provided at the end of the H-shaped steel beam, the end plate is provided with a shear groove for clamping and cooperating with the wedge-shaped shear key on the end surface facing the steel column, the wedge-shaped shear key is provided with a connecting piece, the shear groove is provided with a first mounting hole adapted to the connecting piece, and the end plate is fixedly connected to the fixing plate via the connecting piece.

2. The assembled steel frame beam-column node according to claim 1, characterized in that: The end plate is a shield-shaped structure and includes a middle web and flanges on both sides. The two flanges are symmetrically arranged to be inclined outward relative to the web. A plurality of second mounting holes are arranged on the flanges in the vertical direction. The end plates of adjacent steel beam assemblies are connected and fixed by bolts penetrating the second mounting holes of the two.

3. The assembled steel frame beam-column node according to claim 1, characterized in that: The steel column is a square steel tube column and has a through cavity structure without partitions inside.

4. The assembled steel frame beam-column node according to claim 3, characterized in that: The fixing plate and the wedge-shaped shear key are integrally formed and fixed to the surrounding side walls of the square steel pipe column by welding.

5. The assembled steel frame beam-column node according to claim 2, characterized in that: The concave surface of the web of the end plate is welded and fixed to the upper flange, the lower flange and the web of the H-shaped steel beam.

6. The assembled steel frame beam-column node according to claim 5, characterized in that: The upper end of the end plate extends out of the upper flange of the H-shaped steel beam, and the lower end of the end plate extends out of the lower flange of the H-shaped steel beam.

7. The assembled steel frame beam-column node according to claim 5, characterized in that: The width of the web is set to be the same as the width of the side wall of the steel column.

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