Connection node between steel tube bundle composite shear wall and steel beam

Abstract

The present invention proposes a connection node between a steel tube bundle combined shear wall and a steel beam, which belongs to the technical field of construction engineering, has high ultimate bearing capacity, safe and reliable connection, and is easy to install on site. The connection node between a steel tube bundle combined shear wall and a steel beam comprises a steel tube bundle combined shear wall, an H-shaped steel beam, and an embedded component for connecting the steel tube bundle combined shear wall and the H-shaped steel beam; the embedded component comprises an end plate, and anchor bars and a web connection plate respectively connected to two opposite sides of the end plate; the side of the end plate connected to the anchor bar is a first connection surface, and the side of the end plate connected to the web connection plate is a second connection surface; the first connection surface is attached to the surface to be connected of the steel tube bundle combined shear wall, and the anchor bar is embedded in the steel tube bundle combined shear wall; the upper flange plate and the lower flange plate of the H-shaped steel beam are welded to the second connection surface, and the web of the H-shaped steel beam is connected to the web connection plate by bolts.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering, and in particular relates to a connection node between a steel tube bundle combined shear wall and a steel beam. Background Art

[0002] At present, shear walls are important lateral force resisting components in building structures and play an important role in structural earthquake resistance. In recent years, the steel tube bundle combined shear wall structure system has been proposed and gradually applied in engineering practice. This structure system has good bearing capacity, earthquake resistance and fire resistance. The material consumption is significantly reduced compared with the traditional shear wall structure, and it has excellent comprehensive economic performance. Moreover, it can solve the problem of indoor exposed columns and has good architectural adaptability. It is an ideal shear wall structure.

[0003] In the steel tube bundle composite shear wall structure system, the wall-beam connection node is the key part to realize the coordinated work of the steel beam and the shear wall, and directly affects the bearing capacity of the structure. There are few types of existing steel tube bundle composite shear wall and steel beam connection nodes. For example, patent CN104047365A discloses a connection node between a steel beam and a composite structure shear wall, which directly welds the flange of the steel beam to the steel tube bundle, and at the same time directly welds the connecting plate at the corresponding position of the steel tube bundle and connects it to the web of the steel beam through bolts to realize the connection between the steel tube bundle composite structure shear wall and the steel beam; patent CN204212267U discloses an end plate type steel beam and a steel tube bundle composite structure shear wall connection node, which is respectively welded on the left and right sides of the steel tube bundle composite structure shear wall. Flange connection plate, an end plate is arranged outside the diaphragm of the terminal unit of the steel tube bundle composite structure shear wall, the upper and lower sides of the end plate are respectively welded to the diaphragm of the terminal unit of the steel tube bundle composite structure shear wall, the middle part is welded to the flange connection plate, and the steel beam is welded to the end plate, so as to realize the connection between the steel beam and the steel tube bundle composite structure shear wall; in addition, there is also a rib plate node of the steel tube bundle shear wall without edge components, which is mainly welded to the steel beam flange and the steel tube bundle respectively through the rib plate, so as to realize the connection between the shear wall and the steel beam. However, the main connection method of the above-mentioned existing steel tube bundle composite shear wall and steel beam connection node is welding. Since the steel tube bundle of the shear wall adopts cold-bent thin-walled U-shaped steel, its wall thickness is relatively thin, so that the weld leg size of the weld is subject to certain restrictions, affecting the ultimate bearing capacity of the connection. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned existing steel tube bundle combined shear wall and steel beam connection nodes, the present invention proposes a steel tube bundle combined shear wall and steel beam connection node with high ultimate bearing capacity, safe and reliable connection and convenient on-site installation.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A connection node between a steel tube bundle composite shear wall and a steel beam, comprising a steel tube bundle composite shear wall, an H-shaped steel beam and an embedded component for connecting the steel tube bundle composite shear wall and the H-shaped steel beam; the embedded component comprises an end plate, and anchor bars and a web connecting plate respectively connected to two opposite side surfaces of the end plate; the side surface of the end plate connected to the anchor bar is a first connection surface, and the side surface of the end plate connected to the web connecting plate is a second connection surface; the first connection surface is attached to the surface to be connected of the steel tube bundle composite shear wall, and the anchor bar is embedded in the steel tube bundle composite shear wall; the upper flange plate and the lower flange plate of the H-shaped steel beam are welded to the second connection surface, and the web of the H-shaped steel beam is connected to the web connecting plate by bolts.

[0007] Preferably, the steel tube bundle composite shear wall comprises a shear wall frame and concrete, the shear wall frame has a plurality of tubular cavities, the plurality of tubular cavities are arranged in rows along a direction perpendicular to the surface to be connected, and the concrete is filled in the tubular cavities.

[0008] Preferably, the anchor bar passes through a plurality of the tubular cavities.

[0009] Preferably, there are multiple anchor bars, which are arranged in multiple rows and columns and are evenly connected to the first connecting surface of the end plate.

[0010] Preferably, the anchor bars and web connecting plates are arranged perpendicular to the end plate surface.

[0011] Preferably, groove welds are used between the upper flange plate and the end plate, and between the lower flange plate and the end plate, and a lining plate is welded to the bottom of the groove welds.

[0012] Preferably, the edge of the end plate is welded to the surface to be connected of the steel tube bundle combined shear wall by circumferential welding.

[0013] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0014] 1. The connection node between the steel tube bundle combined shear wall and the steel beam provided by the present invention realizes the connection between the steel tube bundle combined shear wall and the H-shaped steel beam by means of the embedded components. Starting from the connection between the steel and the concrete, the bonding effect between the concrete in the steel tube bundle combined shear wall and the anchor bars of the embedded components is utilized to transfer the beam end load to the concrete through the anchor bars. The force transmission path is clear, the connection is safer and more reliable, and the ultimate bearing capacity of the connection node is improved.

[0015] 2. The connection node between the steel tube bundle combined shear wall and the steel beam provided by the present invention has a simple and reasonable structure. The on-site construction only includes the concrete pouring of the steel tube bundle combined shear wall and the connection of the H-shaped steel beam. The on-site welding workload is small, the construction is convenient and fast, and it meets the assembly requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a connection node between a steel tube bundle combined shear wall and a steel beam provided in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 The exploded diagram of the connection node between the steel tube bundle composite shear wall and the steel beam is shown;

[0018] Figure 3 A front view of a connection node between a steel tube bundle combined shear wall and a steel beam provided in an embodiment of the present invention;

[0019] Figure 4 For along Figure 3 Sectional view along line AA;

[0020] Figure 5 A schematic diagram of the structure of a shear wall frame provided by an embodiment of the present invention;

[0021] Figure 6 for Figure 5 Exploded view of the shear wall frame shown;

[0022] Figure 7 A schematic diagram of the structure of the embedded component provided by an embodiment of the present invention;

[0023] Figure 8 for Figure 3 A partial enlarged view of point B in the middle;

[0024] Fig. 9 for Figure 3 A partial enlarged view of point C in the middle;

[0025] In the above figures: 1. Steel tube bundle combined shear wall; 11. Shear wall frame; 111. Tubular cavity; 112. Anchor bar installation hole; 113. Cold-bent thin-walled square steel pipe; 114. Cold-bent thin-walled U-shaped steel; 12. Concrete; 2. H-shaped steel beam; 21. Upper flange plate; 22. Web plate; 23. Lower flange plate; 3. Embedded components; 31. Anchor bar; 32. End plate; 33. Web plate connecting plate; 4. Bolts; 5. Lining plate. DETAILED DESCRIPTION

[0026] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0027] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "top", "bottom" and the like indicate directions or positional relationships based on the attached Figure 3The positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] like Figure 1-Figure 4 As shown, an embodiment of the present invention relates to a connection node between a steel tube bundle composite shear wall and a steel beam, comprising a steel tube bundle composite shear wall 1, an H-shaped steel beam 2 and an embedded component 3 for connecting the steel tube bundle composite shear wall 1 and the H-shaped steel beam 2; the embedded component 3 comprises an end plate 32, and anchor bars 31 and a web connecting plate 33 respectively connected to two opposite sides of the end plate 32; the side of the end plate 32 connected to the anchor bars 31 is a first connection surface, and the side of the end plate 32 connected to the web connecting plate 33 is a second connection surface; the first connection surface is attached to the surface to be connected of the steel tube bundle composite shear wall 1, and the anchor bars 31 are embedded in the steel tube bundle composite shear wall 1; the upper flange plate 21 and the lower flange plate 23 of the H-shaped steel beam 2 are welded to the second connection surface, and the web 22 of the H-shaped steel beam 2 is connected to the web connecting plate 33 by bolts 4.

[0029] For the structure of steel tube bundle combined shear wall 1, Figure 4-Figure 6 As shown, in this embodiment, the steel tube bundle combined shear wall 1 includes a shear wall frame 11 and concrete 12. The shear wall frame 11 has a plurality of tubular cavities 111. The plurality of tubular cavities 111 are arranged in a row in a direction perpendicular to the surface to be connected. The concrete 12 is filled in the tubular cavities 111. It should be noted that Figure 6 As shown, the shear wall frame 11 is welded by cold-bent thin-walled square steel tubes 113 and a plurality of cold-bent thin-walled U-shaped steels 114 arranged in rows. Both the cold-bent thin-walled square steel tubes 113 and the cold-bent thin-walled U-shaped steels 114 are provided with anchor bar installation holes 112 for the anchor bars 31 to pass through. It should be noted that the welding of the shear wall frame 11 is completed in the factory, and the pouring of the concrete 12 is completed on site. In order to make the embedded components 3 and the concrete 12 in the steel tube bundle combined shear wall 1 more firmly connected, as shown in FIG. Figure 4 As shown, the anchor bar 31 passes through a plurality of tubular cavities 111. In this embodiment, the anchor bar 31 passes through three tubular cavities 111. The anchor bar 31 is firmly connected to the concrete 12 in each tubular cavity 111 it passes through, ensuring a reliable connection.

[0030] Regarding the embedded component 3, it should be noted that the anchor bar 31 in the embedded component 3 is used to connect the steel tube bundle combined shear wall 1, the web connecting plate 33 is used to connect the H-shaped steel beam 2, and the end plate 32 is used as a connecting component between the anchor bar 31 and the web connecting plate 33, and can also strengthen the connection between the steel tube bundle combined shear wall 1 and the H-shaped steel beam 2. Figure 7As shown, in this embodiment, the anchor bar 31 and the web connecting plate 33 are both arranged perpendicular to the plate surface of the end plate 32, which is conducive to transmitting the tension of the H-shaped steel beam 2. It should be noted that the anchor bar 31 used in this embodiment is a steel bar with a threaded surface commonly used in the field. The anchor bar 31 is connected to the end plate 32 by perforation plug welding, and the web connecting plate 33 is connected to the end plate 32 by a groove weld. The connection of the anchor bar 31, the web connecting plate 33 and the end plate 32 is completed in the factory without on-site welding. As a preferred embodiment, there are multiple anchor bars 31, and the multiple anchor bars 31 are arranged in multiple rows and columns, and are evenly connected to the first connecting surface of the end plate 32, which can make the force between the steel tube bundle combined shear wall 1, the anchor bar 31 and the end plate 32 more uniform. In this embodiment, there are specifically 8 anchor bars 31, which are arranged in 4 rows and 2 columns.

[0031] In order to utilize the end plate 32 to strengthen the connection with the steel tube bundle combined shear wall 1, preferably, the edge of the end plate 32 is welded to the to-be-connected surface of the steel tube bundle combined shear wall 1 by circumferential welding.

[0032] Furthermore, in order to utilize the end plate 32 to strengthen the connection with the H-shaped steel beam 2, as a preferred embodiment, Figure 8 and Fig. 9 As shown, groove welds are used between the upper flange plate 21 and the end plate 32, and between the lower flange plate 23 and the end plate 32, and a lining plate 5 is welded at the bottom of the groove weld. The lining plate 5 can be provided to move the damaged area of ​​the beam end outward, thereby protecting the groove weld. It should be noted that the two ends of the lining plate 5 provided near the upper flange plate 21 are respectively welded to the end plate 32 and the upper flange plate 21 by fillet welds, and the two ends of the lining plate 5 provided near the lower flange plate 23 are respectively welded to the end plate 32 and the lower flange plate 23 by fillet welds.

[0033] In addition, it should be noted that in order to ensure the connection strength between the web 22 of the H-shaped steel beam 2 and the web connecting plate 33, high-strength bolts are preferably used to connect the web 22 and the web connecting plate 33.

[0034] The method for connecting the steel tube bundle combined shear wall and the steel beam connection node comprises the following steps:

[0035] (1) Insert the anchor bar 31 of the pre-embedded component 3 manufactured in the factory into the shear wall frame 11 of the steel tube bundle combined shear wall 1, pour concrete 12 into the tubular cavity 111 of the shear wall frame 11, so that the anchor bar 31 is pre-embedded in the steel tube bundle combined shear wall 1, and the end plate 32 is attached to the surface to be connected of the steel tube bundle combined shear wall 1. Preferably, after the anchor bar 31 is pre-embedded in the steel tube bundle combined shear wall 1, the end plate 32 of the pre-embedded component 3 is welded to the surface to be connected of the steel tube bundle combined shear wall 1 by circumferential welding, so as to use the end plate 32 to strengthen the connection with the steel tube bundle combined shear wall 1.

[0036] (2) The web 22 of the H-shaped steel beam 2 is connected to the web connecting plate 33 of the embedded component 3 by bolts 4, and the upper flange plate 21 and the lower flange plate 23 of the H-shaped steel beam 2 are welded to the end plate 32 respectively. When welding the upper flange plate 21 and the end plate 32, and the lower flange plate 23 and the end plate 32, it is preferred to use groove welds and lining plate double-sided welding technology. It should be noted that the lining plate double-sided welding technology refers to groove welding with the lining plate 5 as the bottom, and at the same time, the two ends of the lining plate 5 are respectively welded to the parts to be welded on both sides by fillet welds.

[0037] The above-mentioned steel tube bundle combined shear wall and steel beam connection node realizes the connection between the steel tube bundle combined shear wall 1 and the H-shaped steel beam 2 through the embedded component 3. Starting from the connection between the steel and the concrete 12, the bonding effect between the concrete 12 in the steel tube bundle combined shear wall 1 and the anchor bar 31 of the embedded component 3 is used to transfer the beam end load to the concrete 12 through the anchor bar 31. The force transmission path is clear, the connection is safer and more reliable, and the ultimate bearing capacity of the connection node is improved. Moreover, the above-mentioned steel tube bundle combined shear wall and steel beam connection node has a simple and reasonable structure. The on-site construction only includes the pouring of the concrete 12 of the steel tube bundle combined shear wall 1 and the connection of the H-shaped steel beam 2. The on-site welding workload is small, the construction is convenient and fast, and it meets the assembly requirements.

Claims

1. Connection node between steel tube bundle combined shear wall and steel beam, Features: The invention comprises a steel tube bundle combined shear wall, an H-shaped steel beam and an embedded component for connecting the steel tube bundle combined shear wall and the H-shaped steel beam; the embedded component comprises an end plate, and anchor bars and a web connecting plate respectively connected to two opposite sides of the end plate; the side of the end plate connected to the anchor bar is a first connecting surface, and the side of the end plate connected to the web connecting plate is a second connecting surface; the first connecting surface is attached to the to-be-connected surface of the steel tube bundle combined shear wall, and the edge of the end plate is welded to the steel tube bundle combined shear wall by circumferential welding. The surface to be connected, the anchor bar is pre-embedded in the steel tube bundle composite shear wall; the steel tube bundle composite shear wall includes a shear wall frame and concrete, the shear wall frame has a plurality of tubular cavities, the plurality of tubular cavities are arranged in a row along a direction perpendicular to the surface to be connected, the concrete is filled in the tubular cavities, and the anchor bar passes through the plurality of tubular cavities; the upper flange plate and the lower flange plate of the H-shaped steel beam are welded to the second connection surface, and the web of the H-shaped steel beam is connected to the web connecting plate by bolts.

2. The connection node between the steel tube bundle combined shear wall and the steel beam according to claim 1, Features: There are multiple anchor bars, which are arranged in multiple rows and columns and are evenly connected to the first connecting surface of the end plate.

3. The connection node between the steel tube bundle combined shear wall and the steel beam according to claim 1, Features: The anchor bars and the web connecting plates are both arranged perpendicular to the end plate surface.

4. The connection node between the steel tube bundle combined shear wall and the steel beam according to claim 1, Features: Bevel welds are used between the upper flange plate and the end plate, and between the lower flange plate and the end plate, and a lining plate is welded at the bottom of the bevel welds.

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