Staggered steel bar connecting device and method for concrete member

Abstract

The invention discloses a staggered steel bar connecting device and method for concrete members, and belongs to the technical field of building facility construction. The staggered reinforcing steel bar connecting device comprises a reinforcing steel bar sleeve used for being connected with staggered reinforcing steel bars to be connected, a plurality of shear nails are arranged on the outer wall of the reinforcing steel bar sleeve, and the shear nails are evenly arranged at intervals in the length direction of the reinforcing steel bar sleeve to form a comb-tooth-shaped structure; different from other staggered steel bar connecting devices in which staggered steel bars to be connected need to be connected, the staggered steel bar connecting device has the advantages that the staggered steel bars to be connected are sleeved with the steel bar sleeves through extrusion constraint between shear nails on the steel bar sleeves and concrete, so that the staggered steel bars to be connected are not connected, but the effect of connecting the steel bars can be achieved. Due to the fact that the staggered steel bar connecting device exists independently, the problems that displacement exists between staggered steel bars in the horizontal direction and angular deviation exists in the space are fully solved. The method is easy to operate, rapid in construction, extremely low in cost and wide in application range, and an effective connecting method is provided for staggered steel bar connection.

Description

Technical Field

[0001] The invention belongs to the technical field of building facility construction, and in particular relates to a staggered steel bar connection device and a connection method for a concrete component. Background Art

[0002] In the context of urban renewal, component reuse and prefabricated structures have become important means to promote sustainable development. With the development of the economy, the demand for materials in urban construction has increased dramatically. Due to its special composition and properties, construction waste has great potential for resource recycling; resource utilization of construction waste can not only alleviate the shortage of resources, but also solve the problem of construction waste occupying land resources and damaging the ecological environment.

[0003] The development of prefabricated buildings has become one of my country's important construction industry policies at this stage. In recent years, prefabricated buildings have shown a good development trend and have played an important role in promoting the transformation and upgrading of the construction industry and promoting green development and high-quality development in urban and rural construction.

[0004] Disassembling and reassembling construction waste is an effective way to recycle resources. During the reassembly of buildings, the steel bars, as the load-bearing structure, directly affect the performance and bearing capacity of the reassembled components. However, whether it is the reassembly of components or the assembly splicing, the steel bars may be misaligned. Existing steel bar connection methods, such as binding, welding, grouting sleeves, etc., require high precision. When the misaligned steel bars have large spacing or angles, the construction is difficult and the connection quality cannot be guaranteed, affecting the normal use of the final component. Summary of the invention

[0005] Based on the problems existing in the above-mentioned background technology, the present invention proposes a staggered steel bar connection device and a connection method for concrete components, which solves the problem that the existing steel bar connection method cannot be applied to staggered steel bars with large spacing or angles.

[0006] The embodiment of the present invention is achieved as follows:

[0007] The present invention provides a staggered steel bar connecting device for concrete components, which comprises a steel bar sleeve for connecting to the staggered steel bars to be connected, a plurality of shear nails are arranged on the outer wall of the steel bar sleeve, and the plurality of shear nails are evenly spaced along the length direction of the steel bar sleeve to form a comb-tooth structure.

[0008] Furthermore, as a specific connection method between the steel bar sleeve and the dislocated steel bar to be connected, the interior of the steel bar sleeve is provided with an internal thread for threaded connection with the external thread at the end of the dislocated steel bar to be connected.

[0009] Further, the cross-section of the steel bar sleeve is square, and multiple shear studs are arranged on at least one side surface among the four side surfaces of the steel bar sleeve.

[0010] Further, the multiple shear studs are fixedly welded to the side surface of the steel bar sleeve. With the above arrangement, it is convenient to weld the multiple shear studs to the steel bar sleeve.

[0011] Further, the horizontal distance between adjacent two shear studs is greater than the diameter of the shear stud. It is convenient for the multiple shear studs on the comb-like structure of the adjacent misaligned steel bar connecting device to be inserted staggeredly, and under the extrusion and restraint effect of the subsequent concrete, the connection effect of the misaligned steel bars to be connected is enhanced.

[0012] The present invention also provides a connection method for a misaligned steel bar connecting device of a concrete member, which includes the following steps:

[0013] Step 1, fabricate multiple misaligned steel bar connecting devices: repeatedly weld multiple shear studs on a steel bar sleeve to form a comb-like structure, and obtain multiple misaligned steel bar connecting devices;

[0014] Step 2, trim the concrete member: open a notch on the discarded or defective concrete member to expose the ends of the misaligned steel bars to be connected;

[0015] Step 3, install the misaligned steel bar connecting device: connect a misaligned steel bar connecting device to the end of each misaligned steel bar to be connected, and thread-connect the end of the steel bar sleeve to be connected to the misaligned steel bar;

[0016] Step 4, adjust the position of the comb-like structure: when the positions of the ends of the two misaligned steel bars to be connected are relatively close, rotate the steel bar sleeve to make the comb-like structures on the two steel bars inserted staggeredly;

[0017] Step 5, pour and fix: pour concrete with the same grade as the concrete member at the notch, and the concrete covers the notch, the misaligned steel bars to be connected and the multiple misaligned steel bar connecting devices. After the concrete solidifies, connect the misaligned steel bars to be connected as a whole.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a staggered steel bar connection device and connection method for concrete components, which forms a comb-shaped structure by welding a plurality of shear nails on the steel bar sleeve to connect the staggered steel bars to be connected. Unlike other staggered steel bar connection devices, which require the staggered steel bars to be connected to be connected, the present invention innovatively uses the extrusion constraints between the shear nails on the steel bar sleeve and the concrete to respectively place the steel bar sleeves on the staggered steel bars to be connected, so that the staggered steel bars to be connected are not connected but can achieve the effect of connecting the steel bars. Since the staggered steel bar connection device is an independent existence, the problem of horizontal displacement between the staggered steel bars and the angular deviation in space is fully solved. The present invention is simple to operate, quick to construct, extremely low in cost, and has a wide range of applications, and provides an effective connection method for connecting staggered steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the accompanying drawings, the above and other purposes, features and advantages of the present invention will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the staggered steel bar connection device for a single concrete component.

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the comb-like structure interlaced in two concrete components.

[0022] Figure 3 This is a schematic diagram of the actual application scenario of the staggered steel bar connection device.

[0023] Among them, 1. Steel bar sleeve; 2. Misplaced steel bars to be connected; 3. Shear nails; 4. Comb-shaped structure; 5. External thread; 6. Internal thread; 7. Concrete component; 8. Notch. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0028] Please refer to Figure 1 and Figure 2 As shown, the present invention provides a staggered steel bar connection device for a concrete member, which includes a steel bar sleeve 1 for connecting to a staggered steel bar 2 to be connected, a plurality of shear nails 3 are arranged on the outer wall of the steel bar sleeve 1, and the plurality of shear nails 3 are evenly spaced along the length direction of the steel bar sleeve 1 to form a comb-tooth structure 4.

[0029] Furthermore, as a specific connection method between the steel sleeve 1 and the dislocated steel bar 2 to be connected, the steel sleeve 1 is provided with an internal thread 6 for threaded connection with the external thread 5 at the end of the dislocated steel bar 2 to be connected.

[0030] Furthermore, the cross section of the steel sleeve 1 is square, and a plurality of the shear nails 3 are arranged on at least one of the four sides of the steel sleeve 1 .

[0031] Furthermore, the plurality of shear nails 3 are welded and fixed to the side surface of the steel sleeve 1. The above arrangement makes it easy to weld the plurality of shear nails 3 to the steel sleeve 1.

[0032] Furthermore, the horizontal spacing between two adjacent shear nails 3 is greater than the diameter of the shear nails 3. It is convenient for the multiple shear nails 3 of the comb-shaped structure 4 on the adjacent staggered steel bar connection device to be staggered and enhance the connection effect of the staggered steel bars 2 to be connected under the subsequent extrusion constraint of concrete.

[0033] The present invention also provides a method for connecting a staggered steel bar connecting device of a concrete member, which comprises the following steps:

[0034] Step 1, making a plurality of staggered steel bar connection devices: repeatedly welding a plurality of shear nails 3 to a steel bar sleeve 1 to form a comb-tooth structure 4, thereby obtaining a plurality of staggered steel bar connection devices;

[0035] Step 2, trimming the concrete member 7: opening a notch 8 on the discarded or defective concrete member 7 to expose the end of the dislocated steel bar 2 to be connected;

[0036] Step 3, installing the dislocation steel bar connection device: connecting a dislocation steel bar connection device to the end of each dislocation steel bar 2 to be connected, and threading the steel bar sleeve 1 to the end connected to the dislocation steel bar 2 to be connected;

[0037] Step 4, adjusting the position of the comb-tooth structure 4: when the end positions of the two dislocated steel bars 2 to be connected are relatively close, the steel bar sleeve 1 is rotated so that the comb-tooth structures 4 on the two steel bars are inserted alternately;

[0038] Step 5, pouring and fixing: pour concrete with the same grade as the concrete component 7 at the notch 8, the concrete covers the notch 8, the staggered steel bars 2 to be connected and multiple staggered steel bar connecting devices, until the concrete solidifies, the staggered steel bars 2 to be connected are connected as a whole.

[0039] like Figure 3 As shown, this embodiment provides a connection method for rejoining abandoned concrete beams, including an abandoned concrete beam and Figure 2 The damaged part of the abandoned concrete beam is knocked out to create a gap 8, exposing the end of the dislocated steel bar 2 to be connected. Due to the different reinforcement of different abandoned beams, when the steel bars are parallelly dislocated, the steel bars of the abandoned concrete beam are connected by Figure 2 The two staggered steel bar connecting devices shown are connected. By adjusting the positions of the steel bar sleeves 1 in the two staggered steel bar connecting devices, when the end positions of the two staggered steel bars 2 to be connected are relatively close, the steel bar sleeves 1 are rotated to make the comb-shaped structures 4 on the two steel bars staggered and inserted, and finally concrete with the same grade as the concrete component 7 is poured at the gap 8. The concrete covers the gap 8, the staggered steel bars 2 to be connected and the multiple staggered steel bar connecting devices until the concrete solidifies. The staggered steel bars 2 to be connected are connected as a whole. By using this method, while reducing the pressure of construction waste on the environment, abandoned buildings can be fully utilized, the recycling rate of resources can be improved, the project cost can be reduced, and the construction industry can be promoted to develop in a green and environmentally friendly direction.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A misaligned steel bar connecting device for concrete components, characterized in that, It includes a reinforcing bar sleeve for connecting with misaligned reinforcing bars to be connected. Multiple shear studs are arranged on the outer wall of the reinforcing bar sleeve, and the multiple shear studs are evenly spaced along the length direction of the reinforcing bar sleeve to form a comb-like structure.

2. The misaligned steel bar connecting device for concrete members according to claim 1, characterized in that, An internal thread for threadedly connecting with the external thread at the end of the misaligned reinforcing bar to be connected is arranged inside the reinforcing bar sleeve.

3. The misaligned steel bar connecting device for concrete members according to claim 2, wherein, The cross-section of the reinforcing bar sleeve is square, and multiple of the shear studs are arranged on at least one side surface among the four side surfaces of the reinforcing bar sleeve.

4. The misaligned steel bar connecting device for concrete members according to claim 3, wherein The multiple shear studs are fixedly welded to the side surface of the reinforcing bar sleeve.

5. The misaligned steel bar connecting device for a concrete member according to any one of claims 1 to 4, characterized in that The horizontal distance between two adjacent shear studs is greater than the diameter of the shear stud.

6. A connecting method for a misaligned steel bar connecting device of a concrete member according to any one of claims 1 to 5, characterized in that, It includes the following steps: Step 1: Fabricate multiple misaligned reinforcing bar connecting devices: Repeatedly weld multiple shear studs onto a reinforcing bar sleeve to form a comb-like structure, obtaining multiple misaligned reinforcing bar connecting devices; Step 2: Trim the concrete member: Open a notch on the discarded or defective concrete member to expose the end of the misaligned reinforcing bar to be connected; Step 3: Install the misaligned reinforcing bar connecting device: Connect a misaligned reinforcing bar connecting device to the end of each misaligned reinforcing bar to be connected, and threadedly connect the reinforcing bar sleeve with the end of the misaligned reinforcing bar to be connected; Step 4: Adjust the position of the comb-like structure: When the end positions of two misaligned reinforcing bars to be connected are relatively close, rotate the reinforcing bar sleeve to staggeredly insert the comb-like structures on the two reinforcing bars; Step 5: Pour and fix: Pour concrete with the same grade as the concrete member at the notch. The concrete covers the notch, the misaligned reinforcing bars to be connected, and the multiple misaligned reinforcing bar connecting devices. After the concrete solidifies, connect the misaligned reinforcing bars to be connected as a whole.

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