Hinged joint structure of existing concrete cylinder and newly-added steel beam
By designing a hinged node structure, the expansion joints of annular steel plates, connecting plates, bolted connectors and concrete floor slabs are solved, and the problem of adding steel beams and concrete floor slabs affecting the seismic resistance of existing concrete cylinders is achieved, and effective seismic protection is achieved.
Patent Information
- Application Number
- CN202420402912.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-04
AI Technical Summary
During the later renovation of existing concrete frame structure houses, new steel beams and concrete floor slabs turned existing concrete cylinders into short columns, seriously affecting their seismic performance.
A hinged node structure is designed, including annular steel plates, connecting plates, bolted connectors and concrete floor expansion joints, and connected to existing concrete cylinders through inverted conical adhesive anchor bolts and adhesive filling on the adhesive surface. Horizontal oblong holes are set to reduce horizontal force transmission, and expansion joints are set between the concrete floor slab and the existing concrete cylinder to eliminate the rigid influence of the floor slab.
It effectively improves the ductility of existing concrete cylinders, reduces horizontal force transmission, avoids the impact on the seismic resistance of existing concrete cylinders, and solves the problem of the impact of the construction of new platforms on the seismic resistance of existing structures.
Smart Images
Figure CN222558185U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of node connection structures of existing concrete columns and newly added steel beams, in particular to an articulated node structure of existing concrete columns and newly added steel beams. Background Art
[0002] Some existing concrete frame houses need to partially use existing concrete columns to add platforms during the later renovation process. The newly added steel beams and concrete floor slabs used to build the platform turn the existing concrete columns into short columns, which seriously affects the seismic performance of the existing concrete columns. How to make the newly added steel beams and concrete floor slabs not transmit horizontal forces, but only transmit vertical forces, and not affect the seismic performance of the existing concrete columns is an urgent problem to be solved by technical personnel in this field. In view of this, in-depth research on the above issues led to the creation of this case. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides an articulated node structure of an existing concrete column and a newly added steel beam, which solves the problem that the construction of a new platform for an existing concrete column affects the seismic performance of the existing structure.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a hinge node structure of an existing concrete column and a newly added steel beam, the hinge node is set at the intersection of the existing concrete column and the newly added steel beam, the hinge node is composed of an annular steel plate, a connecting plate, a bolt connector and a concrete floor expansion joint, and is used for the hinged connection of the existing concrete column and the newly added steel beam;
[0005] The annular steel plate adopts a segmented design and is anchored to the existing concrete cylinder by an inverted cone adhesive anchor bolt, and the inner ring surface of the annular steel plate and the outer wall of the existing concrete cylinder are tightly fitted by pouring glue to form a bonding surface;
[0006] The connection plate is welded and fixed on the side wall of the annular steel plate and is provided with a horizontal oblong hole, and the bolt connection piece is assembled and fixed with the newly added steel beam through the horizontal oblong hole.
[0007] The annular steel plate is composed of four equally divided arc-shaped steel plates, and adjacent arc-shaped steel plates are fixed by welding.
[0008] The above-mentioned concrete floor expansion joint is arranged between the existing concrete column and the newly added concrete floor, and a 30mm thick extruded board is arranged in the expansion joint of the concrete floor.
[0009] The utility model provides a hinged node structure of an existing concrete cylinder and a newly added steel beam. It has the following beneficial effects: the hinged node structure of the existing concrete cylinder and the newly added steel beam, the annular steel plate is connected to the existing concrete cylinder by means of an inverted cone adhesive anchor bolt and glue injection on the adhesive surface, and the annular steel plate can effectively improve the ductility of the existing concrete cylinder; the newly added steel beam is connected to the annular steel plate by a connecting plate and a bolt connector, and a horizontal oblong hole is set, which can effectively reduce the transmission of horizontal force, or even not transmit horizontal force; an expansion joint is set between the concrete floor slab and the existing concrete cylinder, eliminating the influence of the rigidity of the floor slab on the existing concrete cylinder, and solving the problem that the construction of a new platform for the existing concrete cylinder affects the seismic performance of the existing structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the main structure of a hinged node structure of an existing concrete column and a newly added steel beam described in the utility model.
[0011] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at the AA position.
[0012] Figure 3 It is a structural schematic diagram of the annular steel plate described in the utility model.
[0013] In the figure: 1. Existing concrete column; 2. New steel beam; 3. Hinge node; 4. New concrete floor; 301. Annular steel plate; 302. Connecting plate; 303. Bolted connector; 304. Concrete floor expansion joint; 304-1. 30mm thick extruded board; 301-1. Inverted cone adhesive anchor bolt; 301-2. Adhesive surface. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.
[0016] Embodiment: In conjunction with the specification Figure 1-3It can be seen that this scheme specifically designs a hinge node structure of an existing concrete cylinder and a newly added steel beam, and the hinge node 3 is arranged at the intersection of the existing concrete cylinder 1 and the newly added steel beam 2. The hinge node is composed of an annular steel plate 301, a connecting plate 302, a bolt connector 303 and a concrete floor expansion joint 304, which is used for the hinged connection between the existing concrete cylinder 1 and the newly added steel beam 2, wherein the annular steel plate 301 adopts a segmented design and is anchored to the existing concrete cylinder 1 by an inverted cone adhesive anchor 301-1, and the inner annular surface of the annular steel plate 301 and the outer wall of the existing concrete cylinder 1 are tightly fitted by glue filling to form a bonding surface 301-2, and the connecting plate 302 is welded and fixed to the side wall of the annular steel plate 301 and opened. A horizontal oblong hole is provided, and the bolt connector 303 is assembled and fixed with the newly added steel beam 2 through the horizontal oblong hole. The annular steel plate 301 is connected to the existing concrete cylinder 1 by means of an inverted cone adhesive anchor 301-1 and a glue-filled adhesive surface 301-2. This annular steel plate 301 can effectively improve the ductility of the existing concrete cylinder 1; the newly added steel beam 2 is connected to the annular steel plate 301 through a connecting plate 302 and a bolt connector 303. The horizontal oblong hole is provided, which can effectively reduce the transmission of horizontal force, or even not transmit horizontal force; an expansion joint is provided between the concrete floor slab 4 and the existing concrete cylinder 1 to eliminate the influence of the floor slab rigidity on the existing concrete cylinder, and solve the problem that the construction of the newly added platform affects the seismic performance of the existing structure.
[0017] As a preferred configuration, further, the annular steel plate 301 is composed of four equally divided arc-shaped steel plates, and adjacent arc-shaped steel plates are fixed by welding.
[0018] As a preferred configuration, further, the above-mentioned concrete floor expansion joint 304 is arranged between the existing concrete column 1 and the newly added concrete floor 4, and a 30 mm thick extruded board 304-1 is provided in the concrete floor expansion joint 304.
[0019] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hinged node structure of an existing concrete column and a newly added steel beam, characterized in that: The hinged node (3) is arranged at the junction of the existing concrete column (1) and the newly added steel beam (2), and the hinged node is composed of an annular steel plate (301), a connecting plate (302), a bolt connector (303) and a concrete floor expansion joint (304), and is used for hinged connection between the existing concrete column (1) and the newly added steel beam (2); The annular steel plate (301) is designed in sections and is anchored to the existing concrete cylinder (1) via an inverted cone-shaped adhesive anchor bolt (301-1), and the inner annular surface of the annular steel plate (301) and the outer wall of the existing concrete cylinder (1) are tightly fitted together by pouring glue to form an adhesive surface (301-2); The connecting plate (302) is welded and fixed on the side wall of the annular steel plate (301) and is provided with a horizontal oblong hole, and the bolt connection member (303) is assembled and fixed to the newly added steel beam (2) through the horizontal oblong hole.
2. The hinged node structure of an existing concrete column and a newly added steel beam according to claim 1 is characterized in that: The annular steel plate (301) is composed of four equally divided arc-shaped steel plates, and adjacent arc-shaped steel plates are fixed by welding.
3. The hinged node structure of an existing concrete column and a newly added steel beam according to claim 1 is characterized in that: The concrete floor expansion joint (304) is arranged between the existing concrete column (1) and the newly added concrete floor (4), and a 30 mm thick extruded board (304-1) is arranged in the concrete floor expansion joint (304).