Steel structure unequal-height primary and secondary beam oblique crossing assembly type connecting joint

Abstract

The utility model relates to a steel structure unequal-height primary and secondary beam oblique crossing assembly type connection node which comprises a stiffening plate, a special-shaped H-shaped steel primary beam, an H-shaped steel secondary beam and a connection node structure. The connecting node structure comprises an H-shaped steel stiffening rib connecting piece, a connecting plate, a lining plate and a bolt, the section of the H-shaped steel stiffening rib connecting piece is the same as that of the H-shaped steel secondary beam, one end of the H-shaped steel stiffening rib connecting piece is welded between the upper flange and the lower flange of the special-shaped H-shaped steel main beam, and the other end of the H-shaped steel stiffening rib connecting piece is welded between the connecting plate and the lining plate. And the other end of the H-shaped steel stiffening rib connecting piece is fixed with a web plate of the H-shaped steel secondary beam by welding. The connection problem that in a three-dimensional space structure, the main beam and the secondary beam are not equal in height and the secondary beam is obliquely arranged is solved, the requirement of diversified arrangement forms can be met, factory preprocessing and on-site bolt connection are combined, good assembling performance is achieved during installation, great convenience is brought to on-site construction, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure building joints, in particular to an inclined assembly connection joint for unequal-height main and secondary steel beams in a steel structure. Background Technique

[0002] Steel materials are gradually widely used in building structures, and the application of steel frame structures is also increasing. With the development of the times, the layout forms of steel frame structures are becoming increasingly diverse. In traditional frame structures, most main and secondary beams have the same height, which cannot meet the needs of diverse layout forms. Moreover, in three-dimensional space structures, for inclined secondary beams, there are no clear design requirements for the connection joints between the main and secondary beams. In addition, during actual construction, it is necessary to splice steel materials. The commonly used splicing method is welding. However, the on-site construction conditions are often poor, it is difficult to ensure the connection strength between components, it is time-consuming and laborious, and the seismic effect is not good. In the case of small or medium earthquakes, cracks and other problems are likely to occur at the welded parts on site. Content of the Utility Model

[0003] The utility model aims to solve the deficiencies of the prior art and provides an inclined assembly connection joint for unequal-height main and secondary steel beams in a steel structure.

[0004] To achieve the above object, the utility model adopts the following technical solutions: An inclined assembly connection joint for unequal-height main and secondary steel beams in a steel structure, including: a stiffening plate, a special-shaped H-shaped steel main beam, an H-shaped steel secondary beam, and a connection joint structure; the upper flange plate of the special-shaped H-shaped steel main beam is arranged obliquely, the lower flange plate is arranged horizontally, and the web is arranged vertically. The inclination angle of the H-shaped steel secondary beam is the same as the inclination angle of the upper flange of the special-shaped H-shaped steel main beam. The connection joint structure includes: an H-shaped steel stiffening rib connector, a connecting plate, a lining plate, and bolts. The cross-section of the H-shaped steel stiffening rib connector is the same as that of the H-shaped steel secondary beam. One end of the H-shaped steel stiffening rib connector is welded between the upper flange and the lower flange on the side of the special-shaped H-shaped steel main beam close to the H-shaped steel secondary beam, and the other end of the H-shaped steel stiffening rib connector is fixedly connected to the web of the H-shaped steel secondary beam by welding.

[0005] Further, a connecting plate is arranged parallel to the outside of the H-shaped steel stiffening rib connector and the H-shaped steel secondary beam. The connecting plate is fixedly connected to the H-shaped steel stiffening rib connector and the web of the H-shaped steel secondary beam by bolts respectively.

[0006] Further, the stiffening plate is welded on the side of the special-shaped H-shaped steel main beam away from the H-shaped steel secondary beam. The stiffening plate is vertically arranged between the upper flange and the lower flange of the special-shaped H-shaped steel main beam, and notches are arranged at the upper and lower parts of the stiffening plate.

[0007] Further, fan-shaped openings are arranged at both the upper and lower parts where the H-shaped steel stiffening rib connector is connected to the H-shaped steel secondary beam.

[0008] Furthermore, the H-shaped steel stiffening rib connector and the secondary H-shaped steel beam are fixedly welded through a lining plate, and the lining plate is strip-shaped.

[0009] Furthermore, bolt mounting holes are provided on the H-shaped steel stiffening rib connector, the web of the secondary H-shaped steel beam, and the connecting plate.

[0010] Furthermore, the upper flange of the special-shaped main H-shaped steel beam uses a steel plate of 207×12 mm, the web uses a steel plate of 177×8 mm, the lower flange uses a steel plate of 200×12 mm, and the model of the secondary H-shaped steel beam is HW200×200×8×12 mm.

[0011] The beneficial effects of the present utility model are as follows: The present utility model solves the connection problem of unequal heights of the main and secondary beams and the inclined arrangement of the secondary beams in a three-dimensional space structure, can meet the needs of diversified arrangement forms, combines factory prefabrication with on-site bolt connection, has good assembly performance during installation, brings great convenience to on-site construction, saves time and effort, and the connection strength between components is guaranteed, and the seismic performance is good. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model;

[0013] Figure 2 is a structural schematic diagram of the H-shaped steel stiffening rib connector;

[0014] Figure 3 is a structural schematic diagram of the connecting plate;

[0015] Figure 4 is a structural schematic diagram of the secondary H-shaped steel beam;

[0016] Figure 5 is a structural schematic diagram of the secondary H-shaped steel beam with connection nodes at both ends;

[0017] In the figure: 1 - stiffening plate; 2 - special-shaped main H-shaped steel beam; 3 - H-shaped steel stiffening rib connector; 4 - connecting plate; 5 - lining plate; 6 - bolt; 7 - secondary H-shaped steel beam;

[0018] The drawings in the present utility model are all schematic diagrams, and their sizes do not represent actual sizes;

[0019] The following will be described in detail with reference to the embodiments of the present utility model with reference to the drawings. Specific Embodiments

[0020] The present utility model will be further described below with reference to the drawings and embodiments:

[0021] As Figures 1 to 5As shown in the figure, a steel structure skew assembled connection joint with unequal heights of primary and secondary beams includes: a stiffening plate 1, a special-shaped H-section steel primary beam 2, an H-section steel secondary beam 7, and a connection joint structure; the upper flange plate of the special-shaped H-section steel primary beam 2 is arranged obliquely, the lower flange plate is arranged horizontally, and the web is arranged vertically. The inclination angle of the H-section steel secondary beam 7 is the same as the inclination angle of the upper flange of the special-shaped H-section steel primary beam 2. The connection joint structure includes: an H-section steel stiffening rib connecting piece 3, a connecting plate 4, a lining plate 5, and bolts 6. The H-section steel stiffening rib connecting piece 3 has the same cross-section as the H-section steel secondary beam 7. One end of the H-section steel stiffening rib connecting piece 3 is welded between the upper flange and the lower flange of the special-shaped H-section steel primary beam 2 close to the H-section steel secondary beam 7, and the other end of the H-section steel stiffening rib connecting piece 3 is fixedly connected to the web of the H-section steel secondary beam 7 by welding. The H-section steel stiffening rib connecting piece 3 serves both as a stiffening rib of the special-shaped H-section steel primary beam 2 and as a connection between the special-shaped H-section steel primary beam 2 and the H-section steel secondary beam 7, realizing an oblique connection method with the primary beam arranged horizontally as a whole, the primary and secondary beams having unequal heights, and the secondary beam arranged obliquely. The specific inclination angle can be connected according to the actual construction requirements.

[0022] The connecting plate 4 is arranged in parallel with the outside of the H-section steel secondary beam 7 on the H-section steel stiffening rib connecting piece 3, and the connecting plate 4 is fixedly connected to the H-section steel stiffening rib connecting piece 3 and the web of the H-section steel secondary beam 7 respectively through bolts 6.

[0023] The stiffening plate 1 is welded on the side of the special-shaped H-section steel primary beam 2 away from the H-section steel secondary beam 7. The stiffening plate 1 is arranged vertically between the upper flange and the lower flange of the special-shaped H-section steel primary beam 2, and notches are provided at the upper and lower parts of the stiffening plate 1. Providing notches at the upper and lower parts can prevent stress concentration.

[0024] Sector-shaped openings are provided at both the upper and lower parts where the H-section steel stiffening rib connecting piece 3 is connected to the H-section steel secondary beam 7. So as to use a strip-shaped lining plate 5 for groove welding connection.

[0025] The H-section steel stiffening rib connecting piece 3 is fixedly connected to the H-section steel secondary beam 7 by welding through the lining plate 5, and the lining plate 5 is strip-shaped.

[0026] Bolt mounting holes are provided on the H-section steel stiffening rib connecting piece 3, the web of the H-section steel secondary beam 7, and the connecting plate 4.

[0027] The upper flange of the special-shaped H-section steel primary beam 2 uses a steel plate of 207×12mm, the web uses a steel plate of 177×8mm, the lower flange uses a steel plate of 200×12mm, and the model of the H-section steel secondary beam 7 is HW200×200×8×12mm.

[0028] The usage steps of the present utility model are as follows: The special-shaped H-shaped steel main beam 2 is welded by three steel plates in the factory. The H-shaped steel stiffener connecting piece 3 and the stiffening plate 1 are pre-welded on the special-shaped H-shaped steel main beam 2 in the factory. Bolt installation holes are reserved in advance at the H-shaped steel stiffener connecting piece 3, the web of the H-shaped steel secondary beam 7 and the connecting plate 4. The above materials are transported to the construction site. The position of the special-shaped H-shaped steel main beam 2 is determined according to the construction design elevation. The H-shaped steel secondary beam 7 and the H-shaped steel stiffener connecting piece 3 are welded through the lining plate 5, so that the bolt installation holes opened on the connecting plate 4 correspond to the bolt installation holes opened on the H-shaped steel stiffener connecting piece 3 and the H-shaped steel secondary beam 7, and they are fixedly connected with bolts 6.

[0029] In the above technical solution, the specific dimensions and thicknesses of the special-shaped H-shaped steel main beam 2 and the H-shaped steel secondary beam 7 and the number of bolts 6 should be determined according to the actual engineering situation. The skew angle of the H-shaped steel stiffener connecting piece 3 between the special-shaped H-shaped steel main beam 2 and the H-shaped steel secondary beam 7 is determined according to specific construction cases to meet the diverse three-dimensional layout requirements.

[0030] The connection between the special-shaped H-shaped steel main beam 2, the H-shaped steel stiffener connecting piece 3 and the stiffening plate 1 needs to be welded and completed in the factory. Only a small part of the groove welding and bolt connection 6 of the lining plate 5 between the H-shaped steel stiffener connecting piece 3 and the H-shaped steel secondary beam 7 needs to be completed on-site to ensure the strength of the component connection and guarantee the construction quality.

[0031] The present utility model has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. An assembled connection node with skewed intersection of unequal-height primary and secondary steel beams, characterized in that, Including: Stiffening plate (1), special-shaped H-section steel main beam (2), H-section steel secondary beam (7), connection node structure; the upper flange plate of the special-shaped H-section steel main beam (2) is arranged obliquely, the lower flange plate is arranged horizontally, and the web is arranged vertically. The inclination angle of the H-section steel secondary beam (7) is the same as the inclination angle of the upper flange of the special-shaped H-section steel main beam (2). The connection node structure includes: H-section steel stiffening rib connector (3), connecting plate (4), lining plate (5), bolt (6). The cross-section of the H-section steel stiffening rib connector (3) is the same as that of the H-section steel secondary beam (7). One end of the H-section steel stiffening rib connector (3) is welded between the upper flange and the lower flange on the side of the special-shaped H-section steel main beam (2) close to the H-section steel secondary beam (7), and the other end of the H-section steel stiffening rib connector (3) is fixedly connected to the web of the H-section steel secondary beam (7) by welding.

2. The prefabricated connection joint with skewed intersection of unequal-height primary and secondary steel beams according to claim 1, wherein A connecting plate (4) is arranged in parallel with the outside of the H-section steel stiffening rib connector (3) and the H-section steel secondary beam (7). The connecting plate (4) is fixedly connected to the web of the H-section steel stiffening rib connector (3) and the H-section steel secondary beam (7) respectively through bolts (6).

3. The prefabricated connection joint of skewed intersection of unequal-height primary and secondary steel beams according to claim 1, characterized in that The stiffening plate (1) is welded on the side of the special-shaped H-section steel main beam (2) away from the H-section steel secondary beam (7). The stiffening plate (1) is arranged vertically between the upper flange and the lower flange of the special-shaped H-section steel main beam (2), and notches are provided at the upper and lower parts of the stiffening plate (1).

4. A steel structure unequal-height primary and secondary beam skew assembled connection node according to claim 1, characterized in that Sector-shaped openings are provided at both the upper and lower parts where the H-section steel stiffening rib connector (3) is connected to the H-section steel secondary beam (7).

5. A steel structure unequal-height primary-secondary beam skew assembled connection node according to claim 4, characterized in that, The H-section steel stiffening rib connector (3) and the H-section steel secondary beam (7) are fixedly connected by welding through a lining plate (5), and the lining plate (5) is strip-shaped.

6. The prefabricated connection joint of the unequal-height primary and secondary steel beams with oblique intersection according to claim 2, characterized in that, Bolt mounting holes are provided on the web of the H-section steel stiffening rib connector (3), the H-section steel secondary beam (7), and the connecting plate (4).

7. A steel structure unequal-height primary-secondary beam skew assembled connection node according to claim 6, characterized in that, The upper flange of the special-shaped H-section steel main beam (2) uses a steel plate of 207×12 mm, the web uses a steel plate of 177×8 mm, the lower flange uses a steel plate of 200×12 mm, and the model of the H-section steel secondary beam (7) is HW200×200×8×12 mm.

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