Steel reinforced concrete joint restraint device

Abstract

The utility model relates to the technical field of building construction, and particularly discloses a steel-reinforced concrete joint restraining device. The steel-reinforced concrete joint restraining device comprises joint steel plate hoops, the joint steel plate hoops are parallel to the transverse steel members, the joint steel plate hoops are welded between the transverse steel members at the same section steel member joint, and the welded joint steel plate hoops form a hoop-shaped structure. The node steel plate hoop is made of a strip-shaped steel plate, and the node steel plate hoop and the profile steel component are machined together in a factory. According to the utility model, the defects of difficulty in mounting the constraint steel bars, large field manufacturing and welding workload and substandard protection layer caused by node steel bar deviation in the traditional steel reinforced concrete construction are effectively overcome.

Description

A steel-reinforced concrete joint restraint device Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a steel-reinforced concrete joint restraint device. Background Technology

[0002] Steel-reinforced concrete is a new type of composite structural material that combines steel and concrete, with steel serving as a reinforcing material embedded within the concrete to jointly bear external loads. The structure features high load-bearing capacity, good seismic performance, convenient and quick construction, and high durability.

[0003] This type of structure is mainly used in high-rise buildings, large-span structures, bridge engineering, and other special fields. In applications combined with reinforced concrete structures, the diameter of the reinforcing bars at column-beam junctions is usually large. Due to the density of the reinforcing bars at the column-beam junctions and the prefabrication deviations of the components, adjustments to the horizontal and vertical reinforcing bars are often necessary during on-site construction. As shown in Figure 8, the currently commonly used steel-reinforced concrete joint restraint method involves installing prefabricated restraint bars 3 after the horizontal and vertical reinforcing bars at the column-beam junctions are tied to achieve integration between the concrete column-beam reinforcing bars and the steel components. During installation, the restraint bars 3 pass through the strip grooves 4 opened on the horizontal steel components 2. However, due to the prefabrication of the restraint bars and the excessively large density and diameter of the joint reinforcing bars, the restraint bars 3 are difficult to install after adjustments to the horizontal and vertical reinforcing bars. Furthermore, after installation, deviations in the joint reinforcing bars can lead to a reduction or absence of the protective layer.

[0004] Currently, the traditional construction method for addressing the installation of reinforcing bars in steel-reinforced concrete joints involves dividing the reinforcing bars into multiple segments on-site and installing them by welding. This method significantly increases construction time and costs, and cannot guarantee welding quality. Therefore, there is an urgent need for a new type of restraint device and method for steel-reinforced concrete joints, providing an effective solution to the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a steel-reinforced concrete joint restraint device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A steel-reinforced concrete joint restraint device includes a joint steel plate hoop: the joint steel plate hoop is parallel to the transverse steel members, and the joint steel plate hoop is welded between the transverse steel members at the same steel member joint, forming a hoop-like structure after welding; the joint steel plate hoop is made of strip steel plate, and the joint steel plate hoop and the steel member are processed together in the factory.

[0008] Furthermore, the inner wall of the node steel plate hoop is welded with reinforcing bars of the same length as the inner edge, and the reinforcing bars are made of steel plates.

[0009] Furthermore, semi-circular vertical steel bar grooves are evenly distributed on the reinforcing bars.

[0010] Furthermore, steel segments are welded between the corners of adjacent node steel plate hoops, and these steel segments are used to control the vertical spacing between adjacent node steel plate hoops.

[0011] Furthermore, the outer steel plate of the node steel plate hoop has a thickness of 20-25mm and a width of 35-45mm; the inner steel plate of the node steel plate hoop has a thickness of 10-15mm and a width of 12-18mm.

[0012] Furthermore, the spacing between adjacent steel plate hoops at the nodes is 30-45mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention provides a steel-reinforced concrete joint restraint device, using joint steel plate hoops as the core restraint mechanism. Before component fabrication, the joint is refined and finalized based on various professional drawings, and then integrated with the steel components in the factory for integrated processing, ensuring dimensional accuracy and avoiding on-site installation conflicts. Therefore, this invention effectively shortens the rebar installation time and improves installation efficiency. Since the joint steel plate hoops are guaranteed to be qualified at the factory, the problem of insufficient concrete cover thickness due to rebar misalignment after rebar adjustment is avoided. Regarding construction costs, since this invention is completed in the factory, only localized welding is required on-site, effectively reducing the amount of welding work involved in component installation, increasing construction speed, and reducing personnel input. Furthermore, this invention improves the structural accuracy and strength of the steel-reinforced concrete joint through rebar grooves and steel segments, and provides convenience and improved accuracy for on-site rebar installation. This invention effectively solves the defects of traditional steel-reinforced concrete construction, such as the difficulty in installing restraint rebar, the large amount of on-site fabrication and welding work, and the substandard concrete cover caused by rebar deviation. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural schematic diagram of a steel-reinforced concrete joint restraint device;

[0016] Figure 2 is a schematic diagram of the installation structure of a steel-reinforced concrete joint restraint device;

[0017] Figure 3 is a three-dimensional structural schematic diagram of a steel-reinforced concrete joint restraint device with reinforcing bars.

[0018] Figure 4 is a magnified view of a portion of L in Figure 3;

[0019] Figure 5 is a top view of a steel-reinforced concrete joint restraint device with reinforcing bars.

[0020] Figure 6 is a magnified view of part K in Figure 5;

[0021] Figure 7 is a structural schematic diagram of a traditional steel-reinforced concrete joint with confined steel stirrups.

[0022] Figure 8 is a schematic diagram of the installation structure of the traditional steel-reinforced concrete joint restrained steel reinforcement stirrups.

[0023] In the diagram: 1. Vertical steel member; 2. Horizontal steel member; 3. Reinforcing bar; 4. Strip groove; 5. Node steel plate hoop; 6. Lining bar; 7. Vertical reinforcing bar groove; 8. Steel segment. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-2. A steel-reinforced concrete joint restraint device includes a joint steel plate hoop 5: the joint steel plate hoop 5 is parallel to the transverse steel member 2, and the joint steel plate hoop 5 is welded between each transverse steel member 2 at the same steel member joint, and the welded joint steel plate hoop 5 forms a hoop-shaped structure; the joint steel plate hoop 5 is made of strip steel plate, and the joint steel plate hoop 5 and the steel member are processed together in the factory.

[0026] The outer steel plate of node steel plate hoop 5 has a thickness of 20-25mm and a width of 35-45mm; the inner steel plate of node steel plate hoop 5 has a thickness of 10-15mm and a width of 12-18mm.

[0027] The spacing between adjacent steel plate hoops at the nodes is 30-45mm.

[0028] Working principle of this embodiment:

[0029] The steel-reinforced concrete joint restraint device of this utility model adopts a prefabricated integrated design in the factory. The core component is the joint steel plate hoop 5, which is welded parallel to the transverse steel member 2 to form a hoop-like structure. During construction, the following process shall be followed.

[0030] Factory prefabrication: Based on the detailed drawings, steel components and node steel plates are fabricated in the factory to ensure accuracy and avoid on-site conflicts.

[0031] On-site installation: The welded steel components are hoisted and transported. The node steel plate hoist 5 has been pre-installed and no additional adjustment is required.

[0032] Vertical reinforcing bars 1 are directly embedded in reinforcing bar grooves 7, and horizontal reinforcing bars 2 are arranged parallel to steel plate hoops 5, eliminating the need for the traditional reinforcing bar 3 threading operation.

[0033] Concrete pouring: Concrete is poured after the structure is molded. The steel plate hoop 5 at the joint forms an integral constraint with the reinforcing bars, which enhances the strength of the joint.

[0034] In existing technologies, traditional steel-reinforced concrete joints are typically reinforced with precast confined reinforcing bars 3, which must pass through strips 4 on the transverse steel members 2 to secure the joint reinforcement. However, due to the high density and large diameter of the joint reinforcement, and the need for adjustments to the horizontal and vertical reinforcement during on-site construction, installation becomes difficult. The confined reinforcing bars 3 need to pass through multiple reinforcing bars; if the bars are misaligned, installation becomes difficult, or even impossible. Adjustments to the reinforcement may cause the confined reinforcing bars 3 to shift, resulting in insufficient concrete cover thickness and affecting durability. When the confined reinforcing bars 3 cannot be directly installed, they must be cut and welded on-site, increasing construction time and labor costs, and the welding quality is difficult to guarantee.

[0035] This embodiment uses the node steel plate hoop 5 as the core constraint device. Before component processing, the node is refined and finalized based on the drawings from various disciplines, and then integrated with the steel component for integrated processing in the factory, ensuring dimensional accuracy and avoiding on-site installation conflicts. Therefore, this embodiment can effectively shorten the reinforcement installation time and improve installation efficiency. Since the node steel plate hoop 5 is guaranteed to be qualified at the factory, it avoids the problem of the constraint reinforcement 3 shifting after reinforcement adjustment, resulting in the concrete cover thickness not meeting the standard. In terms of construction cost, since this embodiment is completed in the factory, only local area welding construction is required on site, which can effectively reduce the amount of component installation welding work, increase construction speed, and reduce personnel input.

[0036] Example 2: Please refer to Figures 3-6. A steel-reinforced concrete joint restraint device differs from Example 1 in that, further, a reinforcing bar 6 of the same length as the inner edge is welded to the inner wall of the joint steel plate hoop 5. The reinforcing bar 6 is made of steel plate.

[0037] The reinforcing bar 6 has semi-circular vertical reinforcing bar grooves 7 distributed at equal intervals.

[0038] Steel segments 8 are welded between the corners of adjacent node steel plate hoops 5. The steel segments 8 are used to control the vertical spacing between adjacent node steel plate hoops 5.

[0039] In this embodiment, the newly added reinforcing bar 6, vertical reinforcing bar groove 7, and steel segment 8 work together to optimize the node constraint system. The reinforcing bar 6 welded to the inner side of the node steel plate hoop 5 is made of steel plate and is the same length as the inner edge of the hoop. Its main function is to enhance the local stiffness of the steel plate hoop 5 and prevent deformation during concrete pouring.

[0040] The semi-circular bar grooves 7 are evenly distributed on the reinforcing bar 6. The groove openings are used to correspond to the installation positions of the vertical reinforcing bars 1, eliminating the deviation of the bar spacing in traditional construction. The semi-circular design allows the reinforcing bars 1 to be naturally centered after being embedded, ensuring the uniform thickness of the concrete protective layer.

[0041] The steel segment 8 welded to the corner of the adjacent steel plate hoop 5 has a dual function: strictly maintaining the interlayer spacing of 30-45mm to ensure that the concrete is fully filled; and forming an integral load-bearing system through rigid connection of the multi-layer steel plate hoop 5 to improve the shear resistance of the joint.

[0042] During construction, the vertical reinforcing bars 1 can be quickly inserted into the pre-positioning slots 7, the horizontal reinforcing bars 2 remain parallel to the steel plate hoops 5, and the steel segments 8 automatically maintain the designed spacing, achieving efficient and precise prefabricated construction.

Claims

1. A steel-reinforced concrete joint restraint device, characterized in that, Includes a node steel plate hoop (5): the node steel plate hoop (5) is parallel to the transverse steel member (2), the node steel plate hoop (5) is welded between each transverse steel member (2) at the node of the same steel member, and the welded node steel plate hoop (5) forms a hoop structure; the node steel plate hoop (5) is made of strip steel plate, and the node steel plate hoop (5) and the steel member are processed together in the factory.

2. The steel-reinforced concrete joint restraint device according to claim 1, characterized in that: The inner wall of the node steel plate hoop (5) is welded with a reinforcing bar (6) of the same length as the inner edge, and the reinforcing bar (6) is made of steel plate.

3. The steel-reinforced concrete joint restraint device according to claim 2, characterized in that: The reinforcing bar (6) has semi-circular vertical reinforcing bar grooves (7) distributed at equal intervals.

4. The steel-reinforced concrete joint restraint device according to claim 1, characterized in that: A steel segment (8) is welded between the corners of adjacent node steel plate hoops (5), and the steel segment (8) is used to control the vertical spacing between adjacent node steel plate hoops (5).

5. A steel-reinforced concrete joint restraint device according to claim 1, characterized in that: The outer steel plate of the node steel plate hoop (5) has a thickness of 20-25mm and a width of 35-45mm; the inner steel plate of the node steel plate hoop (5) has a thickness of 10-15mm and a width of 12-18mm.

6. A steel-reinforced concrete joint restraint device according to claim 1, characterized in that: The spacing between adjacent steel plate hoops (5) is 30-45mm.

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