A new reinforced concrete column with steel tube reinforced concrete column connection joint

Abstract

The utility model belongs to the field of building construction technology, provide a kind of reinforcing existing structure connecting joint of new steel pipe concrete column, the connecting joint is installed at the place of adjacent connecting concrete structure;Connecting joint includes steel pipe column, ring beam steel plate hoop subassembly, fixed part and reinforcing subassembly.The structure of the connecting joint of the application, for the reinforcement at the place of adjacent connecting concrete structure, compared with traditional concrete column, the effect of exempting from formwork and exempting from tying steel bar is realized, carrying capacity is higher, construction is more convenient and fast, simultaneously ring beam steel plate hoop subassembly can realize the connection of original concrete beam and new steel pipe column, the structure concept of " strong node " is realized, node connection is reliable, and construction is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a connection node for reinforcing existing structures with newly added steel-concrete composite columns. Background Technology

[0002] With the continuous advancement of urban renewal, old reinforced concrete buildings often experience insufficient vertical load-bearing capacity due to structural aging or changes in function over long-term use, necessitating the addition of structural columns for structural reinforcement. Currently, both domestically and internationally, cast-in-place reinforced concrete columns are commonly used for new structural columns. This method is essentially the same as conventional construction: holes are drilled in the existing beams to insert reinforcing bars as the load-bearing reinforcement for the new column, then formwork is erected, concrete is poured, and after curing and formwork removal, the new structural column is completed. This method involves a relatively cumbersome construction process, a slow construction speed, and requires the concrete to reach the required curing age before testing. Alternatively, steel pipe columns are used for structural reinforcement, typically as temporary support structures. These new steel pipe columns are connected by connecting steel plates installed at the top / bottom of the beams at both ends. These connecting plates are fixed to the concrete beams with anchor bolts. The bolts at the bottom of the beams require drilling and inserting reinforcing bars from top to bottom, making construction more difficult and challenging to guarantee in terms of quality.

[0003] In the process of strengthening and renovating old buildings, it is common to encounter situations where the cross-section of newly added structural columns is limited. In such cases, the overall strength of conventional concrete columns is low, making it difficult to meet design requirements. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a new type of steel-concrete composite column connection node for reinforcing existing structures.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A new steel-concrete composite column reinforcement connection node for existing structures, wherein the connection node is installed at adjacent connected concrete structures.

[0007] The connection node includes a steel pipe column, a ring beam steel plate hoop assembly, fasteners, and reinforcement components;

[0008] The concrete structure is provided with a connecting groove that mates with the ring beam steel plate hoop assembly. The ring beam steel plate hoop assembly is fixedly connected to the concrete structure through the fastener. The steel pipe column is connected to the ring beam steel plate hoop assembly. The steel pipe column is provided with a cavity for injecting concrete. The reinforcing assembly is located in the ring beam steel plate hoop assembly and the steel pipe column. The reinforcing assembly located in the ring beam steel plate hoop assembly is connected to the outer wall surface of the steel pipe column.

[0009] Preferably, the adjacent concrete structure includes a concrete beam and a concrete slab, wherein the concrete beam is perpendicularly connected to the concrete slab and the concrete beam is located at the bottom of the concrete slab.

[0010] Preferably, the ring beam steel plate hoop assembly includes a first U-shaped steel plate, a second U-shaped steel plate, and a central connecting plate. The first U-shaped steel plate and the second U-shaped steel plate have the same structure, and the first U-shaped steel plate and the second U-shaped steel plate are provided with opening slots.

[0011] The first U-shaped steel plate is positioned above the second U-shaped steel plate. The first U-shaped steel plate engages with the concrete slab through the connecting groove. The opening groove of the first U-shaped steel plate engages with the concrete beam. The opening groove of the second U-shaped steel plate engages with the concrete beam. The middle connecting plate is connected to the first U-shaped steel plate and the second U-shaped steel plate respectively.

[0012] Preferably, adhesive is provided between the first U-shaped steel plate and the concrete slab / concrete beam, and adhesive is provided between the second U-shaped steel plate and the concrete beam.

[0013] Preferably, the middle connecting plate is connected to the first U-shaped steel plate and the second U-shaped steel plate by welding.

[0014] Preferably, the fastener is an expansion bolt or a chemical bolt, and the fastener is located on the top and side of the first U-shaped steel plate and on the side of the second U-shaped steel plate.

[0015] Preferably, the reinforcing component includes a column base triangular stiffening plate and a cross-shaped shear connection key;

[0016] One end of the column base triangular stiffening plate is welded to the outer wall of the steel pipe column, and the other end is welded to the ring beam steel plate hoop assembly;

[0017] The cross-shaped shear connection key is located inside the steel pipe column and is welded to the ring beam steel plate hoop assembly.

[0018] Preferably, the steel pipe column is provided with a pouring port that communicates with the cavity.

[0019] Preferably, a sealing plate is provided on the steel pipe column, and the sealing plate covers the pouring port.

[0020] Compared with the prior art, the beneficial effects of this utility model include:

[0021] The connection node structure of this application strengthens the adjacent concrete structure. Compared with traditional concrete columns, it achieves the effect of eliminating the need for formwork and rebar tying, with higher load-bearing capacity and more convenient and faster construction. At the same time, the ring beam steel plate hoop assembly can realize the connection between the original concrete beam and the newly added steel pipe column, realizing the structural concept of "strong node". The node connection is reliable and easy to construct. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a partial structural schematic diagram of the present invention.

[0025] Figure 3 This is a front view of the present invention.

[0026] Figure 4 This is a side view of the present invention.

[0027] in:

[0028] 1-Concrete beam; 2-Concrete slab; 3-Steel pipe column; 31-Pouring port; 32-Sealing plate; 4-Ring beam steel plate hoop assembly; 41-First U-shaped steel plate; 42-Second U-shaped steel plate; 43-Middle connecting plate; 5-Fixed component; 6-Column base triangular stiffening plate; 7-Cross shear connection key. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] Example:

[0032] like Figure 1-4 As shown, this embodiment provides a new steel-concrete composite column to reinforce an existing structure connection node, and the connection node is installed at the adjacent connected concrete structure.

[0033] The connection nodes include steel pipe column 3, ring beam steel plate hoop assembly 4, fastener 5, and reinforcement assembly;

[0034] The concrete structure is provided with a connecting groove that mates with the ring beam steel plate hoop assembly 4. The ring beam steel plate hoop assembly 4 is fixedly connected to the concrete structure through fasteners 5. The steel pipe column 3 is connected to the ring beam steel plate hoop assembly 4. The steel pipe column 3 is provided with a cavity for pouring concrete. The reinforcing assembly is located inside the ring beam steel plate hoop assembly 4 and the steel pipe column 3. The reinforcing assembly located at the ring beam steel plate hoop assembly 4 is connected to the outer wall of the steel pipe column 3.

[0035] The structure of the connection node in this embodiment strengthens the adjacent concrete structure. Compared with traditional concrete columns, it achieves the effect of eliminating the need for formwork and rebar tying, resulting in higher load-bearing capacity and more convenient and faster construction. At the same time, the ring beam steel plate hoop assembly 4 can connect the original concrete beam 1 with the newly added steel pipe column, realizing the structural concept of "strong node". The node connection is reliable and easy to construct.

[0036] The adjacent concrete structure in this embodiment includes a concrete beam 1 and a concrete slab 2. The concrete beam 1 and the concrete slab 2 are perpendicularly connected and the concrete beam 1 is located at the bottom of the concrete slab 2.

[0037] Specifically, the ring beam steel plate hoop assembly 4 includes a first U-shaped steel plate 41, a second U-shaped steel plate 42, and a middle connecting plate 43. The first U-shaped steel plate 41 and the second U-shaped steel plate 42 have the same structure, and the first U-shaped steel plate 41 and the second U-shaped steel plate 42 are provided with opening slots.

[0038] The first U-shaped steel plate 41 is positioned above the second U-shaped steel plate 42. The first U-shaped steel plate 41 is connected to the concrete slab 2 via a connecting groove. The opening groove of the first U-shaped steel plate 41 is connected to the concrete beam 1. The opening groove of the second U-shaped steel plate 42 is connected to the concrete beam 1. The middle connecting plate 43 is connected to the first U-shaped steel plate 41 and the second U-shaped steel plate 42 respectively.

[0039] Specifically, the first U-shaped steel plate 41 is bonded to the concrete slab 2 and the concrete beam 1 with adhesive, and the second U-shaped steel plate 42 is bonded to the concrete beam 1 with adhesive.

[0040] Specifically, the middle connecting plate 43 is connected to the first U-shaped steel plate 41 and the second U-shaped steel plate 42 by welding.

[0041] Specifically, the fastener 5 is an expansion bolt or a chemical bolt, and the fastener 5 is located on the top and side of the first U-shaped steel plate 41 and on the side of the second U-shaped steel plate 42.

[0042] Specifically, the reinforcement components include column base triangular stiffening plates 6 and cross-shaped shear connection keys 7;

[0043] One end of the column base triangular stiffening plate 6 is welded to the outer wall of the steel pipe column 3, and the other end is welded to the ring beam steel plate hoop assembly 4;

[0044] The cross-shaped shear connection key 7 is located inside the steel pipe column 3 and is welded to the ring beam steel plate hoop assembly 4.

[0045] Specifically, the steel pipe column 3 is provided with a pouring port 31 that communicates with the cavity.

[0046] Specifically, a sealing plate 32 is provided on the steel pipe column 3, and the sealing plate 32 covers the pouring opening 31.

[0047] Based on the specific structure described above, the implementation steps of this embodiment are as follows:

[0048] Floor slab cutting: At the adjacent connected concrete structure, specifically at the column foot of the beam, the floor slab is cut along the side of the concrete beam 1 to cut off the original steel bars. At the same time, the steel bars are retained and part of the floor slab concrete is removed. The width of the removal is determined according to the thickness of the ring beam steel plate hoop, forming a structure for the connecting groove for installing the first U-shaped steel plate 41.

[0049] Installation of the ring beam steel plate hoop assembly 4: First, install the first U-shaped steel plate 41 and the second U-shaped steel plate 42. Before installation, apply steel adhesive to the surface of the first U-shaped steel plate 41 and the second U-shaped steel plate 42 to ensure repeated contact between the steel plate and the concrete surface and improve adhesion. During installation, the first U-shaped steel plate 41 is installed with the opening groove facing downward along the cut seam of the floor slab, and the second U-shaped steel plate 42 is installed with the opening groove facing upward. After the first U-shaped steel plate 41 and the second U-shaped steel plate 42 are aligned in place, they are welded and fixed using the central connecting plate 43.

[0050] Drilling and bolting on the beam: Drill holes in the pre-drilled holes on the first U-shaped steel plate 41 and the second U-shaped steel plate 42. After drilling and cleaning the holes, install expansion bolts or chemical bolts. Specifically, each of the two sides of the first U-shaped steel plate 41 and the second U-shaped steel plate 42 has two holes, and the top surface of the first U-shaped steel plate 41 and the second U-shaped steel plate 42 has two holes on each side at the connection point with the steel pipe column 3.

[0051] Installation of cross shear connection key 7: Install cross shear connection key 7 at the center of the steel pipe column 3, and weld cross shear connection key 7 to the top surface of the first U-shaped steel plate 41 and the second U-shaped steel plate 42.

[0052] Installation of steel pipe column 3: Install steel pipe column 3 in the designed position, and connect both ends of steel pipe column 3 to the first U-shaped steel plate 41 and the second U-shaped steel plate 42 by welding.

[0053] Installation of column base triangular stiffening plate 6: Weld column base triangular stiffening plate 6 to both sides of steel pipe column 3.

[0054] Concrete pouring: Pour concrete into the steel pipe column 3 from the pouring port 31 until it is full.

[0055] Sealing of pouring port 31: Use sealing plate 32 to seal pouring port 31, and weld sealing plate 32 to steel pipe column 3 for fixation.

[0056] Floor slab sealing: Connect the original reinforcing steel bars of the concrete structure to the ring beam steel plate hoop assembly 4.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A connection node for reinforcing existing structures with newly added steel-concrete composite columns, characterized in that, The connection node is installed at the adjacent connected concrete structure; The connection node includes a steel pipe column, a ring beam steel plate hoop assembly, fasteners, and reinforcement components; The concrete structure is provided with a connecting groove that mates with the ring beam steel plate hoop assembly. The ring beam steel plate hoop assembly is fixedly connected to the concrete structure through the fastener. The steel pipe column is connected to the ring beam steel plate hoop assembly. The steel pipe column is provided with a cavity for injecting concrete. The reinforcing assembly is located in the ring beam steel plate hoop assembly and the steel pipe column. The reinforcing assembly located in the ring beam steel plate hoop assembly is connected to the outer wall surface of the steel pipe column.

2. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 1, characterized in that, The adjacent concrete structures include concrete beams and concrete slabs, with the concrete beams being perpendicularly connected to the concrete slabs and located at the bottom of the concrete slabs.

3. The connection node for reinforcing existing structures with newly added steel-concrete composite columns according to claim 2, characterized in that, The ring beam steel plate hoop assembly includes a first U-shaped steel plate, a second U-shaped steel plate, and a central connecting plate. The first U-shaped steel plate and the second U-shaped steel plate have the same structure, and the first U-shaped steel plate and the second U-shaped steel plate are provided with opening slots. The first U-shaped steel plate is positioned above the second U-shaped steel plate. The first U-shaped steel plate engages with the concrete slab through the connecting groove. The opening groove of the first U-shaped steel plate engages with the concrete beam. The opening groove of the second U-shaped steel plate engages with the concrete beam. The middle connecting plate is connected to the first U-shaped steel plate and the second U-shaped steel plate respectively.

4. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 3, characterized in that, The first U-shaped steel plate is bonded to the concrete slab and the concrete beam with adhesive, and the second U-shaped steel plate is bonded to the concrete beam with adhesive.

5. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 3, characterized in that, The central connecting plate is connected to the first U-shaped steel plate and the second U-shaped steel plate by welding.

6. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 3, characterized in that, The fastener is an expansion bolt or a chemical bolt, and the fastener is located on the top and side of the first U-shaped steel plate and on the side of the second U-shaped steel plate.

7. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 1, characterized in that, The reinforcement components include column base triangular stiffening plates and cross-shaped shear connection keys; One end of the column base triangular stiffening plate is welded to the outer wall of the steel pipe column, and the other end is welded to the ring beam steel plate hoop assembly; The cross-shaped shear connection key is located inside the steel pipe column and is welded to the ring beam steel plate hoop assembly.

8. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 1, characterized in that, The steel pipe column is provided with a pouring port that communicates with the cavity.

9. The connection node for reinforcing an existing structure with a newly added steel-concrete composite column according to claim 8, characterized in that, A sealing plate is provided on the steel pipe column, and the sealing plate covers the pouring port.

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