Steel reinforced concrete joint restraint device and method

Abstract

The invention relates to the technical field of building construction, and particularly discloses a steel-reinforced concrete joint restraining device and method. 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. The steel-reinforced concrete joint constraint method comprises the following steps: firstly, deepening a joint to generate a profile steel component drawing containing a joint steel plate hoop, and processing a profile steel component and the joint steel plate hoop by a factory according to the drawing; transporting the profile steel member to a site for welding and mounting, and then mounting vertical steel bars and transverse steel bars; and finally, closing the mold and coagulating. The defects that in traditional steel reinforced concrete construction, constraint steel bars are difficult to install, the field manufacturing and welding workload is large, and a protection layer does not reach the standard due to node steel bar deviation are effectively overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a steel reinforced concrete joint restraint device and method. Background Technique

[0002] Steel reinforced concrete is a new type of composite structural material that combines steel and concrete. The steel is used as the reinforcement material and is arranged inside the concrete to jointly bear the external load. The structure has the characteristics of strong load-bearing capacity, good seismic performance, convenient and fast construction, and high durability.

[0003] Such structures are mainly applied to high-rise buildings, long-span structures, bridge engineering, and other special fields. Among them, in the combined application with reinforced concrete structures, the diameters of the joint steel bars at the column-beam intersections are usually large. Affected by the steel bar density and component prefabrication deviation between the columns and beams, there are often situations where the horizontal and vertical steel bars need to be adjusted during on-site structure construction. As Figure 8 shown, the currently commonly used steel reinforced concrete joint restraint method is to install the prefabricated restraint steel bar 3 after the horizontal and vertical steel bars at the column-beam intersection are tied up to achieve the integrity between the concrete column-beam steel bars and the steel members. When installing, the restraint steel bar 3 passes through the strip-shaped groove 4 opened on the horizontal steel member 2. However, due to the prefabrication of the restraint steel bar and the problems of high steel bar density and large diameter at the joint, when the horizontal and vertical steel bars are adjusted, it is difficult to install the restraint steel bar 3, and after installation, there will be a situation where the protective layer is reduced or there is no protective layer due to the deviation of the joint steel bars.

[0004] Currently, the traditional construction method for dealing with the installation problem of the steel reinforced concrete joint restraint steel bar is to divide the restraint steel bar 3 into multiple sections at the construction site and install it in a welding form. This method results in a large increase in the construction period cost and cannot guarantee the welding quality. Therefore, there is an urgent need for a new type of steel reinforced concrete joint restraint device and method to provide an effective solution to the defects of the existing technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel reinforced concrete joint restraint device and method to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

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

[0008] Furthermore, a lining bar with the same length as the inner side is welded on the inner side wall of the joint steel plate hoop, and the lining bar is made of steel plate.

[0009] Furthermore, semi-circular vertical steel bar grooves are equidistantly distributed on the lining bar.

[0010] Furthermore, a steel section is welded between the corners of adjacent upper and lower joint steel plate hoops, and the steel section is used to control the vertical distance between adjacent joint steel plate hoops.

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

[0012] Furthermore, the distance between adjacent upper and lower joint steel plate hoops is 30 - 45 mm.

[0013] A method for restraining a steel reinforced concrete joint includes the following steps:

[0014] S1. Deepen the joint according to the drawings of each specialty to generate a steel section member drawing including the joint steel plate hoop, and the factory processes the steel section member and the joint steel plate hoop according to the drawing;

[0015] S2. Transport the steel section member in S1 to the site, carry out hoisting, welding and installation, then install vertical steel bars, and finally install horizontal steel bars;

[0016] S3. Pour concrete after the structure formwork is reinforced.

[0017] Furthermore, when the steel section members are hoisted, welded and installed on site in S2, the joint steel plate hoops between two steel section members are welded with steel bars to form an overall restraint effect.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The present invention provides a steel reinforced concrete joint restraint device and method. The joint steel plate hoop is used as the core restraint device. Before the component processing, the joints are deepened and finalized in combination with the drawings of each specialty, and integrally processed with the profiled steel components in the factory to ensure accurate dimensions and avoid on-site installation conflicts. Therefore, the present invention can effectively shorten the steel bar installation time and improve the installation efficiency; since the joint steel plate hoop has been guaranteed to be qualified when leaving the factory, the problem that the restraint steel bars shift after the steel bars are adjusted and the concrete cover thickness does not meet the standard is avoided; in terms of construction cost, since the present invention is completed in the factory and only local area welding construction needs to be carried out when transported to the site, the installation welding workload of the components can be effectively reduced, the construction speed can be improved, and the personnel input can be reduced. In addition, the present invention improves the structural accuracy and strength of the steel reinforced concrete joint through the steel bar groove and the steel section and provides convenience and accuracy improvement for the on-site steel bar installation. The present invention effectively solves the defects in the traditional construction of steel reinforced concrete, such as the difficulty in installing restraint steel bars, the large amount of on-site fabrication and welding work, and the non-compliance of the cover due to the deviation of the joint steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a perspective structural view of a steel reinforced concrete joint restraint device;

[0021] Figure 2 FIG. is an installation structural view of a steel reinforced concrete joint restraint device;

[0022] Figure 3 FIG. is a perspective structural view of a steel reinforced concrete joint restraint device configured with lining bars;

[0023] Figure 4 is Figure 3 a partial enlarged view of the L position in;

[0024] Figure 5 FIG. is a top view of a steel reinforced concrete joint restraint device configured with lining bars;

[0025] Figure 6 is Figure 5 a partial enlarged view of the K position in;

[0026] Figure 7 FIG. is a structural view of a traditional steel reinforced concrete joint restraint steel bar hoop;

[0027] Figure 8 FIG. is an installation structural view of a traditional steel reinforced concrete joint restraint steel bar hoop.

[0028] In the figure: 1, vertical steel member; 2, horizontal steel member; 3, restraint steel bar; 4, strip groove; 5, joint steel plate hoop; 6, lining bar; 7, vertical steel bar groove; 8, steel section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] Embodiment 1: Please refer to Figures 1 - 2 , a steel reinforced concrete joint restraint device, including 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 section steel member joint. After welding, the joint steel plate hoop 5 forms a hoop-shaped structure; The joint steel plate hoop 5 is made of strip steel plates, and the joint steel plate hoop 5 and the section steel member are processed together in the factory.

[0031] The thickness of the outer steel plate of the joint steel plate hoop 5 is 20 - 25 mm, and the width is 35 - 45 mm; The thickness of the inner steel plate of the joint steel plate hoop 5 is 10 - 15 mm, and the width is 12 - 18 mm.

[0032] The distance between adjacent upper and lower joint steel plate hoops 5 is 30 - 45 mm.

[0033] The working principle of this embodiment:

[0034] The steel reinforced concrete joint restraint device of the present invention adopts an integrated factory prefabrication design. The core component is the joint steel plate hoop 5, which is welded parallel to the transverse steel member 2 to form a hoop-shaped structure. During construction, the following process is carried out.

[0035] Factory prefabrication: In combination with the detailed drawings, the section steel member and the joint steel plate hoop 5 are processed in the factory to ensure accuracy and avoid on-site conflicts.

[0036] On-site installation: The section steel member is hoisted and welded, and the joint steel plate hoop 5 has been pre-installed without additional adjustment.

[0037] The vertical reinforcement 1 is directly embedded in the reinforcement groove 7, and the transverse reinforcement 2 is arranged parallel to the steel plate hoop 5, eliminating the need for the threading operation of the traditional restraint reinforcement 3.

[0038] Concrete pouring: After the structure is formwork closed, the concrete is poured. The joint steel plate hoop 5 and the reinforcement form an overall restraint, enhancing the joint strength.

[0039] In the prior art, traditional steel reinforced concrete joints are usually reinforced with prefabricated restraint steel bars 3, which need to pass through the strip grooves 4 on the transverse steel members 2 to fix the joint steel bars. However, due to the high density and large diameter of the joint steel bars, and the adjustment of horizontal and vertical steel bars during on-site construction, the installation is difficult. The restraint steel bar 3 needs to pass through multiple steel bars. If the position of the steel bars deviates, it is difficult to install or even impossible to be in place. After the steel bars are adjusted, it may cause the restraint steel bar 3 to shift, resulting in an unqualified concrete cover thickness and affecting durability. When the restraint steel bar 3 cannot be directly installed, it needs to be cut and welded on-site, increasing the construction period and labor cost, and it is difficult to guarantee the welding quality.

[0040] In this embodiment, a joint steel plate hoop 5 is used as the core restraint device. Before the component processing, the joint is deepened and finalized in combination with the drawings of each specialty, and is integrally processed with the profiled steel member in the factory to ensure accurate dimensions and avoid on-site installation conflicts. Therefore, this embodiment can effectively shorten the steel bar installation time and improve the installation efficiency; since the joint steel plate hoop 5 has been guaranteed to be qualified when leaving the factory, the problem that the restraint steel bar 3 shifts after the steel bar adjustment, resulting in an unqualified concrete cover thickness, is avoided; in terms of construction cost, since this embodiment is completed in the factory and only local area welding construction needs to be carried out when transported to the site, the installation and welding workload of the components can be effectively reduced, the construction speed can be improved, and the personnel input can be reduced.

[0041] Embodiment 2: Please refer to Figures 3 - 6 , a steel reinforced concrete joint restraint device and method, which is different from Embodiment 1 in that, further, a lining steel bar 6 equal in length to the inner edge is welded on the inner side wall of the joint steel plate hoop 5, and the lining steel bar 6 is made of steel plate.

[0042] Semicircular vertical steel bar grooves 7 are equidistantly distributed on the lining steel bar 6.

[0043] A steel section 8 is welded between the corners of adjacent joint steel plate hoops 5 up and down, and the steel section 8 is used to control the vertical distance between adjacent joint steel plate hoops 5.

[0044] The newly added lining steel bar 6, vertical steel bar grooves 7 and steel section 8 in this embodiment work together to optimize the joint restraint system. The lining steel bar 6 welded on the inner side of the joint steel plate hoop 5 is made of steel plate and is equal in length to the inner side of the hoop. Its main function is to enhance the local stiffness of the steel plate hoop 5 and prevent deformation during concrete pouring.

[0045] The semicircular steel bar grooves 7 equidistantly distributed on the lining steel bar 6 have their openings corresponding to the installation positions of the vertical steel bars 1, eliminating the deviation of the steel bar spacing in traditional construction; the semicircular design makes the steel bars 1 naturally centered after being embedded, ensuring uniform concrete cover thickness.

[0046] The steel section 8 welded at the corner of adjacent steel plate hoops 5 has dual functions: strictly maintaining an interlayer spacing of 30 - 45 mm to ensure full filling of concrete; forming an integral force-bearing system through rigid connection for multiple layers of steel plate hoops 5 to enhance the shear resistance of the joint.

[0047] During the construction of this embodiment, the vertical steel bars 1 can be quickly snapped into the pre-positioned grooves 7, the horizontal steel bars 2 are kept parallel to the steel plate hoops 5, and the steel sections 8 automatically maintain the designed spacing, achieving efficient and precise prefabricated construction.

[0048] Embodiment 3: A method for restraining a steel reinforced concrete joint, comprising the following steps:

[0049] S1. Deepen the joint by combining various professional drawings to generate a section steel member drawing including joint steel plate hoops, and the factory processes section steel members and joint steel plate hoops according to the drawing.

[0050] S2. Transport the section steel members in S1 to the site, conduct hoisting, welding and installation, then install vertical steel bars, and finally install horizontal steel bars.

[0051] S3. Pour concrete after the structure is formwork-reinforced.

[0052] Furthermore, when the section steel members are hoisted, welded and installed on site in S2, the joint steel plate hoops between two section steel members are welded with steel bars to form an overall restraining effect.

[0053] This embodiment provides a novel method for restraining a steel reinforced concrete joint. This method integrates the processing of joint steel plate hoops and section steel members through factory prefabrication, avoiding the cumbersome procedures of on-site steel bar binding and adjustment, improving the construction efficiency of the joint; ensuring the processing accuracy of joint steel plate hoops through factory standardized production, only simple welding is required on site, greatly reducing human errors and ensuring the construction quality of the joint; completing the joint steel bar restraint components in the engineering factory, reducing the on-site installation and welding workload of components, improving the construction speed and reducing the personnel input. This embodiment is applicable to the construction of various complex joints and has good popularization value.

Claims

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

2. The steel reinforced concrete joint restraint device according to claim 1, characterized in that: A lining bar (6) having the same length as the inner side is welded on the inner side wall of the nodal steel plate hoop (5), and the lining bar (6) is made of a steel plate.

3. The steel reinforced concrete joint restraint device according to claim 2, characterized in that: Semicircular vertical steel bar grooves (7) are equidistantly distributed on the lining bar (6).

4. A steel reinforced concrete joint restraint device according to claim 1, characterized in that: A steel section (8) is welded between the corners of the upper and lower adjacent nodal steel plate hoops (5), and the steel section (8) is used to control the vertical distance between the adjacent nodal steel plate hoops (5).

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

6. The steel reinforced concrete joint restraint device according to claim 1, wherein: The distance between the upper and lower adjacent nodal steel plate hoops (5) is 30 - 45 mm.

7. A method for restraining a steel reinforced concrete joint, applicable to the steel reinforced concrete joint restraining device according to any one of claims 1-7, characterized in that Including the following steps: S1. Deepen the node by combining various professional drawings to generate a section steel member drawing including the nodal steel plate hoop, and the factory processes the section steel member and the nodal steel plate hoop according to the drawing; S2. Transport the section steel member in S1 to the site, perform hoisting, welding and installation, then install the vertical steel bars, and finally install the transverse steel bars; S3. Pour concrete after the formwork of the structure is closed and strengthened.

8. A steel reinforced concrete joint restraint device and method according to claim 7, characterized in that: When the section steel members are hoisted, welded and installed on site in S2, the nodal steel plate hoops between the two section steel members are welded with steel bars to form an overall restraint effect.

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