Steel reinforced concrete column and eccentric steel plate shear wall connecting joint and construction method

Abstract

The application discloses a connecting joint of a steel reinforced concrete column and an eccentric steel plate shear wall and a construction method, and relates to the technical field of building structures. The connecting joint comprises a frame column, a steel plate shear wall and an adapter connecting structure, the steel plate shear wall is arranged on one side of a plane where the frame column axis is located, and is connected with the frame column through the connecting structure; the adapter connecting structure comprises an upper connecting joint and a lateral connecting joint, the upper connecting joint is arranged at the top of the steel plate shear wall, the lateral connecting joint is arranged on the side surface of the steel plate shear wall, and the upper connecting joint and the lateral connecting joint are both connected with the frame column. The adapter connecting structure solves the problem of connection and load transmission between the steel plate shear wall and the steel skeleton in the frame column under the working condition that the two do not intersect in the plane, and adopts the structure combined by the upper connecting joint and the lateral connecting joint, utilizes the overall rigidity of the structure to limit lateral deformation, and has the advantages of stable connecting structure, high lateral stiffness, stable and safe load transmission.

Description

Technical Field

[0001] This invention relates to the field of design and construction technology of steel-concrete composite shear walls, specifically to a connection node and construction method of a steel-concrete composite column and an eccentric steel plate shear wall. Background Technology

[0002] During the seismic design of building structures, the energy of horizontal seismic motion on the superstructure needs to be dissipated using lateral force-resisting components with a certain degree of flexibility. For building structures with basements, the vertical structure of the first basement level and the beam-slab structure of the first floor are generally considered as the fixed ends of the above-ground structure resisting lateral loads. For underground building structures, considering their environmental factors, reinforced concrete structural systems are generally used in the design.

[0003] Due to limitations imposed by factors such as the building's interior layout, and to optimize the usable space within the building, the cross-section of lateral force-resisting members located underground should not be too large. To fully meet the structural lateral stiffness requirements, a steel-concrete composite structural system can be adopted. However, due to special reasons such as building space layout requirements, the steel plates placed within the shear walls cannot be axially aligned with the steel frames within the frame columns, and sometimes they cannot even intersect in the plane, thus failing to effectively transfer structural loads.

[0004] Therefore, effective transfer measures are needed to reliably connect the steel plate, which plays a dominant role in load transfer within the shear wall, to the steel frame in the frame column, thereby ensuring the effective transfer of structural loads. CN212562024U discloses a structure for connecting a steel plate shear wall and a steel-concrete composite column in an eccentric arrangement to address load transfer. However, the above structure only solves the problem when the shear wall and the steel column are on the same plane, and cannot solve the problem of how to connect them when they are not on the same plane. Moreover, the connection structure used in the above structure cannot effectively transfer loads, and the overall strength is poor, resulting in significant limitations and safety hazards in practical applications. This invention provides a connection node and construction method for a steel-concrete composite column and an eccentric steel plate shear wall to solve the above problems. Summary of the Invention

[0005] This invention provides a connection node and construction method for steel-concrete composite columns and eccentric steel plate shear walls, which is applicable to the case where the steel plate shear wall and the steel skeleton in the frame column do not intersect in the plane, solves the technical problem of load transfer, and the structure is convenient to construct and has strong lateral stiffness.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A connection node between a steel-concrete composite column and an eccentric steel plate shear wall includes a frame column, a steel plate shear wall, and a transition connection structure. The steel plate shear wall is located between the frame columns and is situated on one side of the plane where the axes of the two frame columns lie, offset from the frame columns. The steel plate shear wall is connected to the frame columns through the transition connection structure.

[0008] The transition connection structure includes an upper connection node and a lateral connection node. The upper connection node is located at the top of the steel plate shear wall, connecting the top of the steel plate shear wall with the inner side of the frame column. The lateral connection node is located on the side of the steel plate shear wall, connecting the side of the steel plate shear wall with the front side of the frame column.

[0009] The upper connection node includes a main steel frame beam, a transfer steel frame beam, and a connecting plate. The transfer steel frame beam is horizontally positioned at the top of the steel plate shear wall, and the main steel frame beam is parallel to the rear side of the transfer steel frame beam and connected to the transfer steel frame beam through the connecting plate. Both the main steel frame beam and the transfer steel frame beam are connected to the frame column.

[0010] Furthermore, the lateral connection node includes a transition piece and a connector. The transition piece is connected to the vertical end face of the steel plate shear wall, and the transition piece is connected to the frame column through the connector.

[0011] Furthermore, the adapter includes a base plate, an end plate, and a rib plate. The end plate is vertically disposed on the end face of the base plate, and the rib plate is disposed between the base plate and the end plate. The base plate is connected to the frame column through a connector, and the end plate is connected to the steel plate shear wall.

[0012] Furthermore, the end plate is provided with a limiting strip, which is vertically disposed on the end plate, and the side of the limiting strip is in close contact with the side of the steel plate shear wall.

[0013] Furthermore, the end face of the conversion steel beam is connected to the frame column and end plate, and the outer surface of the conversion steel beam is connected to the limiting strip.

[0014] Furthermore, the main steel beam and the transition steel beam are located on the same horizontal plane and are aligned, and the connecting plates are spaced apart between the main steel beam and the transition steel beam, with the surface of the connecting plates flush with the surface of the main steel beam and the surface of the transition steel beam.

[0015] Furthermore, the centerline of the main steel beam and the centerline of the frame column are located on the same vertical plane.

[0016] Preferably, the main steel beam is an H-shaped steel beam, and the transition steel beam is a C-shaped steel beam.

[0017] Preferably, both the main steel beam and the transfer steel beam are welded to the steel columns of the frame column.

[0018] A construction method for a connection joint between a steel-concrete composite column and an eccentric steel plate shear wall includes the following steps:

[0019] S1, Preliminary construction: Construction of frame columns, and prefabrication of upper connection nodes and lateral connection nodes according to the staggered distance between frame columns and steel plate shear walls;

[0020] S2, Lateral connection node construction: Connect the transition piece to the front side of the frame column according to the marking line through the connector, and then align the end face of the steel plate shear wall with the end face of the transition piece and weld them together to realize the installation of the steel plate shear wall;

[0021] S3, Construction of upper connection nodes: Welding of the transfer steel beams at the top of the steel plate shear wall, welding the main steel beams to the frame columns, aligning the connecting plates with the main steel beams and transfer steel beams, and welding the connecting plates to the main steel beams and transfer steel beams.

[0022] S4, Node Connection: Weld the top face of the adapter to the end face of the conversion steel beam to complete the welding of the connection node and proceed with subsequent construction.

[0023] The beneficial effects of this invention are as follows:

[0024] The transition connection structure solves the problem of connecting and transferring loads between steel plate shear walls and steel frames in the case where they do not intersect in the plane. Furthermore, it adopts a combination of upper connection nodes and lateral connection nodes, and uses the overall stiffness of the above structure to limit lateral deformation. It has the advantages of structural stability, high lateral stiffness, and stable and safe load transfer. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the relative positions of the steel plate shear wall and the frame column of the present invention;

[0026] Figure 2 This is a top view of the connection node of the present invention;

[0027] Figure 3 This is a cross-sectional side view of the connection node of the present invention;

[0028] Figure 4 This is a front view schematic diagram of the connection node of the present invention;

[0029] Figure 5 This is a top view of the adapter of the present invention;

[0030] Figure 6 This is a front view schematic diagram of the adapter of the present invention;

[0031] Figure 7 This is a schematic diagram of the connection structure between the adapter and the cross-shaped steel column of the present invention.

[0032] Attached reference numerals: 1-Frame column, 2-Steel plate shear wall, 3-Transition connection structure, 31-Main steel frame beam, 32-Transition steel frame beam, 33-Connecting gusset plate, 34-Transition component, 341-Bottom plate, 342-End plate, 343-Rib plate, 344-Limiting strip. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] like Figure 1 , 2 As shown in Figures 3 and 4, a connection node between a steel-concrete composite column and an eccentric steel plate shear wall includes a frame column 1, a steel plate shear wall 2, and a transition connection structure 3. The steel plate shear wall 2 is located between the frame columns 1 and on one side of the plane where the axes of two adjacent frame columns 1 are located. The plane where the steel plate shear wall 2 is located is parallel to the plane where the frame columns 1 are located and is eccentrically offset. The steel plate shear wall 2 is connected to the frame column 1 through the transition connection structure 3.

[0036] like Figure 2 , 3 As shown in Figure 4, the transition connection structure 3 includes an upper connection node and a lateral connection node. The upper connection node is located at the top of the steel plate shear wall 2, connecting the top of the steel plate shear wall 2 with the inner side of the frame column 1. The lateral connection node is located on the side of the steel plate shear wall 2, connecting the side of the steel plate shear wall 2 with the front side of the frame column 1, and is connected to the upper connection node.

[0037] The working principle of this invention is as follows: When a building structure vibrates, the horizontal cyclic load is first directly transmitted to the joint between the steel columns and beams through the diagonal supports centrally located in the upper structure. The load is then directly transferred to the steel-concrete frame columns, causing them to tend to deform laterally. To resist this lateral deformation, the steel plate shear wall in the middle of the frame utilizes its overall rigidity to limit this deformation and simultaneously dissipates the energy generated by the cyclic load, thus protecting the frame structure and reducing the risk of damage to the main structure. Therefore, the steel plate shear wall needs to be effectively connected to the steel columns and beams within the main frame structure to effectively transmit the structural load. Due to structural limitations, the application of this invention is in a working condition where the vertical planes of the steel plate shear wall and the steel frame columns 1 do not intersect, resulting in the inability to directly connect the steel plate shear wall and the steel frame columns, thus preventing load transfer. By setting up a transition connection structure 3 composed of upper connection nodes and lateral connection nodes, the steel plate shear wall and the steel frame columns are connected as one unit. During load transfer, the upper connection nodes and lateral connection nodes act as transition bridge components for load transfer, thereby achieving effective load transmission.

[0038] In a typical steel plate shear wall 2, the axis of the two frame columns 1 is located in the same plane. The structural connection and load transfer can be achieved by directly connecting the vertical end face of the steel plate shear wall 2 to the inner side of the frame columns 1 located on both sides. In this embodiment, the steel plate shear wall 2 and the frame columns 1 are eccentrically misaligned. The top of the misaligned steel plate shear wall 2 is connected to the inner side of the steel column of the frame column 1 through the upper connection node, and the vertical end face of the steel plate shear wall 2 is connected to the front side of the steel column of the frame column 1 through the lateral connection node.

[0039] The steel plate shear wall 2 is connected to the inner middle of the steel column of the frame column 1 through the upper connection point, achieving alignment with the axis of the steel column of the frame column 1, thereby realizing the effective transfer of structural loads. The lateral connection node is used to connect the steel plate shear wall 2 to the front side of the frame column 1, acting as a shear transition member, and is connected to the front-rear side of the steel column of the frame column 1.

[0040] like Figure 2 , 3 As shown in Figure 4, the upper connection node serves as a horizontal connection structure between the eccentric steel plate shear wall 2 and the frame column 1. The main steel beam 31 is welded to the middle of the steel column of the frame column 1. The transfer steel beam 32 is located above the steel plate shear wall 2. The main steel beam 31 and the transfer steel beam 32 are located on the same horizontal plane. The main steel beam 31 is connected to the transfer steel beam 32 through the connecting plate 33. After the main steel beam 31, the connecting plate 33 and the transfer steel beam 32 are connected in sequence, a load transfer path is formed.

[0041] like Figure 2 , 3As shown in Figure 4, the upper connection node further includes a main steel beam 31, a transfer steel beam 32, and a connecting plate 33. The transfer steel beam 32 is horizontally arranged on the top of the steel plate shear wall 2, and the main steel beam 31 is arranged parallel to the rear side of the transfer steel beam 32 and connected to the transfer steel beam 32 through the spaced connecting plates 33. The end faces of the main steel beam 31 and the transfer steel beam 32 are welded to the frame column 1.

[0042] Furthermore, the end face of the main steel beam 31 is welded to the steel column of the frame column 1, and the upper surface of the main steel beam 31 is connected to the buckling brace of the superstructure, thereby realizing the connection between the steel plate shear wall and the buckling brace of the superstructure located above.

[0043] Preferably, the main steel beam 31 is an H-shaped steel beam, and the transfer steel beam 32 is a C-shaped steel beam. The main steel beam 31 and the transfer steel beam 32 have the same height. After connection, the upper and lower surfaces of the main steel beam 31 and the transfer steel beam 32 are flush. The opening of the transfer steel beam 32 faces the main steel beam 31, and the vertical plate of the transfer steel beam 32 is aligned vertically with the steel plate shear wall 2 for effective load transfer.

[0044] like Figure 2 , 4 As shown in Figures 5 and 6, the lateral connection node further includes a transition piece 34 and a connector. The transition piece 34 is connected to the vertical end face of the steel plate shear wall 2, and the transition piece 34 is connected to the frame column 1 through the connector.

[0045] Furthermore, the top of the adapter 34 is connected to the end face of the conversion steel beam 32 of the upper connection node, the rear side of the end face of the conversion steel beam 32 is connected to the frame column 1, and the front side of the end face of the conversion steel beam 32 is connected to the top of the adapter 34, thereby strengthening the connection strength between the upper connection node and the lateral connection node and improving the stability of the steel plate shear wall 2.

[0046] like Figure 2 , 7 As shown, preferably, the lateral connection node of the present invention is adaptable to different construction conditions. The frame column 1 can be a box-type steel column, a cross-type steel column, or a combination of box-type and cross-type steel columns.

[0047] like Figure 5 , 6As shown, the adapter 34 further includes a base plate 341, an end plate 342, and a rib plate 343. The end plate 342 is vertically arranged on the vertical end face of the base plate 341 to form a triangular frame structure. The rib plate 343 is arranged vertically between the base plate 341 and the end plate 342. The base plate 341 is connected to the frame column 1 by double-headed studs. The end plate 342 is connected to the vertical end face of the steel plate shear wall 2.

[0048] like Figure 5 , 6 As shown, the end plate 342 is further provided with a limiting strip 344, which is vertically arranged on the end plate 342. The outer side of the limiting strip 344 is in contact with the inner side of the steel plate shear wall 2, and plays a positioning and limiting role when the steel plate shear wall is installed.

[0049] like Figure 3 As shown, the main steel beam 31 and the transition steel beam 32 are horizontally aligned, and the connecting plates 33 are spaced apart between the main steel beam 31 and the transition steel beam 32. The surface of the connecting plates 33 is flush with the surface of the main steel beam 31 and the surface of the transition steel beam 32.

[0050] Preferably, the upper connecting node and the lateral connecting node are interconnected, specifically by connecting the end face of the conversion steel beam 32 to the frame column 1 and the end plate 342, and the outer side of the conversion steel beam 32 is connected to the limiting strip 344.

[0051] Preferably, the main steel beam 31 and the transfer steel beam 32 are both welded to the steel columns of the frame column 1, and the bottom surface of the transfer steel beam 32 is welded to the top surface of the steel plate shear wall 2.

[0052] Furthermore, the centerline of the main steel beam 31 and the centerline of the frame column 1 are located on the same vertical plane, achieving alignment with the axis of the steel beam of the frame column 1.

[0053] Preferably, for ease of manual operation, the height of the adapter 34 is no more than 400mm, and the length of the base plate 341 is the same as the width of the steel column.

[0054] Preferably, the adapter 34 is made of welded steel plate.

[0055] Preferably, the connector is a double-ended stud. Using a double-ended stud as the connector between the adapter 34 and the steel column of the frame column 1 not only achieves the connection function, but also replaces the original shear studs on the steel column, strengthening the connection between the steel column and the concrete.

[0056] A construction method for a connection joint between a steel-concrete composite column and an eccentric steel plate shear wall includes the following steps:

[0057] S1, Preliminary construction: Construction of frame column 1, and prefabrication of upper connection nodes and lateral connection nodes according to the staggered distance between frame column 1 and steel plate shear wall 2.

[0058] S2, Lateral connection node construction: Connect the adapter 34 to the front side of the frame column 1 according to the markings and the connector. Then, after the steel plate shear wall 2 is installed in place, weld it to the end face of the adapter 34 to form a whole, thus realizing the installation of the steel plate shear wall 2.

[0059] S3, Construction of the upper connection node: Welding of the transfer steel beam 32 is carried out on the top of the steel plate shear wall 2. The main steel beam 31 is welded to the frame column 1. Then, the connecting plate 33 is aligned with the main steel beam 31 and the transfer steel beam 32. The connecting plate 33 is welded to the main steel beam 31 and the transfer steel beam 32 to achieve the connection between the steel column of the frame column 1 and the steel plate shear wall 2.

[0060] S4, Node Connection: Weld the top face of the adapter 34 to the end face of the conversion steel beam 32 to complete the welding of the connection node and proceed with subsequent construction.

[0061] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A connection node between a steel-concrete composite column and an eccentric steel plate shear wall, characterized in that, It includes frame columns (1), steel plate shear walls (2) and transition connection structures (3). The steel plate shear walls (2) are located between the frame columns (1). The steel plate shear walls (2) are located on one side of the plane where the axes of the two frame columns (1) are located, and are offset from the frame columns (1). The steel plate shear walls (2) are connected to the frame columns (1) through the transition connection structures (3). The transition connection structure (3) includes an upper connection node and a lateral connection node. The upper connection node is located at the top of the steel plate shear wall (2) and connects the top of the steel plate shear wall (2) with the inner side of the frame column (1). The lateral connection node is located on the side of the steel plate shear wall (2) and connects the side of the steel plate shear wall (2) with the front side of the frame column (1). The upper connection node includes a main steel beam (31), a transfer steel beam (32), and a connecting plate (33). The transfer steel beam (32) is horizontally positioned at the top of the steel plate shear wall (2). The main steel beam (31) is parallel to the rear side of the transfer steel beam (32) and is connected to the transfer steel beam (32) through the connecting plate (33). Both the main steel beam (31) and the transfer steel beam (32) are connected to the frame column (1).

2. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 1, characterized in that: The lateral connection node includes a transition piece (34) and a connector. The transition piece (34) is connected to the end face of the steel plate shear wall (2), and the transition piece (34) is connected to the frame column (1) through the connector.

3. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 2, characterized in that: The adapter (34) includes a base plate (341), an end plate (342) and a rib plate (343). The end plate (342) is vertically disposed on the end face of the base plate (341). The rib plate (343) is disposed between the base plate (341) and the end plate (342). The base plate (341) is connected to the frame column (1) through a connector. The end plate (342) is connected to the steel plate shear wall (2).

4. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 3, characterized in that: The end plate (342) is provided with a limiting strip (344), which is vertically arranged on the end plate (342), and the side of the limiting strip (344) is in contact with the side of the steel plate shear wall (2).

5. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 4, characterized in that: The end face of the conversion steel beam (32) is connected to the frame column (1) and the end plate (342), and the outer side of the conversion steel beam (32) is connected to the limiting strip (344).

6. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 1, characterized in that: The main steel beam (31) and the transition steel beam (32) are located on the same horizontal plane and are aligned. The connecting plate (33) is spaced between the main steel beam (31) and the transition steel beam (32). The surface of the connecting plate (33) is flush with the surface of the main steel beam (31) and the surface of the transition steel beam (32).

7. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 1, characterized in that: The centerline of the main steel beam (31) and the centerline of the frame column (1) are located on the same vertical plane.

8. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 1, characterized in that: The main steel beam (31) is an H-shaped steel beam, and the transition steel beam (32) is a C-shaped steel beam.

9. The connection node between a steel-concrete composite column and an eccentric steel plate shear wall according to claim 1, characterized in that: The main steel beam (31) and the transfer steel beam (32) are both welded to the steel column of the frame column (1).

10. A construction method for a connection joint between a steel-concrete composite column and an eccentric steel plate shear wall according to any one of claims 1-9, characterized in that, Includes the following steps, S1, Preliminary construction: Construction of frame column (1) is carried out, and the upper connection node and lateral connection node are prefabricated according to the staggered distance between frame column (1) and steel plate shear wall (2); S2, construction of lateral connection nodes: Connect the adapter (34) to the front side of the frame column (1) according to the markings through the connector. Then, align the end faces of the steel plate shear wall (2) and the adapter (34) and weld them together to realize the installation of the steel plate shear wall (2). S3, Construction of upper connection node: Welding construction of conversion steel beam (32) is carried out on the top of steel plate shear wall (2). The main steel beam (31) is welded to the frame column (1). Then the connecting plate (33) is aligned with the main steel beam (31) and the conversion steel beam (32). The connecting plate (33) is welded to the main steel beam (31) and the conversion steel beam (32). S4, node connection: Weld the top end face of the adapter (34) to the end face of the conversion steel beam (32) to complete the welding of the connection node and carry out subsequent construction.

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