Spring type reinforcing steel bar connector

Abstract

The utility model discloses a spring type reinforcing steel bar joint, which mainly relates to the field of energy-saving ecological bridge construction, and comprises a plurality of main reinforcements circumferentially distributed on the periphery of a reinforced concrete column, each main reinforcement consists of an upper main reinforcement, a lower main reinforcement and a spring or a connector respectively connected with the upper main reinforcement and the lower main reinforcement, the spring comprises a dense section in the middle and sparse sections located at the two ends of the dense section, the outer wall of the inner side of the spring on each main reinforcement is fixed through an annular stirrup, the two end points of the sparse sections of the spring on each main reinforcement are fixed through annular fixing reinforcements, then a formwork is erected outside the spring type reinforcement joint, and cement concrete is poured; therefore, according to the structural design, the structure has the advantages of being simple in structure, safe, economical, reasonable in price, reliable in performance, convenient to construct, ecological, environmentally friendly and the like, and further has high economic benefits, energy conservation and emission reduction benefits and social benefits by being combined with a corresponding implementation method.

Description

Technical Field

[0001] The utility model relates to the field of energy-saving ecological bridge construction, in particular to a spring-type steel bar joint. Background Art

[0002] In recent years, prefabricated concrete structures have been widely promoted and applied due to their advantages, including high industrialization, rapid construction, high-quality building products, and environmental benefits. However, steel bar connections are crucial for the integrity, safety, and reliability of prefabricated structures. Existing methods for connecting steel bars primarily include binding, welding, and mechanical connections. Binding connections have limited application. For example, longitudinal reinforcement bars in axially tensioned and slightly eccentrically tensioned members cannot be spliced ​​using binding. Furthermore, the reinforcement in the splice area occupies excessive cross-sectional area, consumes a large amount of steel, and has poor force transmission performance. Welding connections require specialized construction equipment, materials, and skilled labor, resulting in long labor hours, high energy consumption, low quality assurance, a high incidence of defective products, and significant material waste. Mechanical connections include threaded sleeves, tapered sleeves, and sleeve extrusion. However, sleeve processing is expensive and inconvenient. Therefore, to address these existing problems with steel bar connections in engineering projects, developing a new rebar joint method that is reliable, affordable, easy to construct, and energy-efficient and emission-reducing is of great theoretical and practical significance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a spring-type steel bar joint with simple structure, low cost, reliable performance, convenient construction, environmental protection, energy saving and emission reduction.

[0004] The technical problem of the utility model is achieved through the following technical solutions:

[0005] A spring-type steel bar joint comprises a plurality of main bars which are circumferentially distributed around a reinforced concrete column. Each main bar is composed of an upper main bar, a lower main bar, and springs or a plurality of connectors respectively connecting the upper and lower main bars. The spring comprises a dense segment in the middle and sparse segments at both ends of the dense segment. The inner outer wall of the spring on each main bar is fixed by annular stirrups, and the two end points of the sparse segment of the spring on each main bar are fixed by annular fixing bars. A formwork is then erected outside the spring-type steel bar joint and cement concrete is poured.

[0006] The concrete is cement concrete for cast-in-situ reinforced concrete columns or cement concrete for prefabricated reinforced concrete column assembling joints. The cross section of the reinforced concrete column is circular, square or other geometric shapes.

[0007] The main reinforcement is the main stress-bearing steel bar of the cast-in-situ reinforced concrete column or the main stress-bearing steel bar connected to each other when the prefabricated reinforced concrete column is assembled.

[0008] The annular fixing rib is fixed to the outer wall of the upper main rib or the lower main rib and the two end points of the sparse segment by binding or electric welding.

[0009] The annular hoop rib is fixed to the inner side of the outer wall of the upper main rib or the lower main rib by binding or electric welding.

[0010] The close contact between the segments of the dense segment is a tension spring, the dense segment symmetrically wraps the upper main rib and the lower main rib, the gap between the inner wall of the dense segment and the outer diameter of the upper main rib or the lower main rib is filled with concrete, and the outer wall of the dense segment and the edge thickness of the reinforced concrete column, that is, the thickness of the protective layer, meet the requirements of the standard specification; the sparse segment is a safety reserve auxiliary spring, and the length and pitch of the sparse segment are determined according to actual conditions.

[0011] The connector is a steel bar mechanical connector, and three or more connectors are used for early symmetric positioning, fixing the upper main rib and the lower main rib, and then connecting the spring type steel bar joint.

[0012] Compared with the prior art, the spring type steel bar joint mainly comprises a plurality of main ribs circumferentially distributed on the periphery of the reinforced concrete column, each main rib is composed of an upper main rib, a lower main rib and a spring or a connector connecting the upper main rib and the lower main rib, the spring comprises a dense segment in the middle and sparse segments at two ends of the dense segment, the inner side of the outer wall of the spring on each main rib is fixed by an annular hoop rib, and the two end points of the sparse segment of the spring on each main rib are fixed by an annular fixing rib. According to the structure design, the spring type steel bar joint has the following advantages: first, the spring composed of the dense segment and the sparse segment is simple to manufacture, low in cost and high in performance-price ratio; second, the spring type steel bar joint is convenient to install, easy to adjust the deviation of the upper main rib and the lower main rib, and saves labor hours; third, the spiral structure of the spring enhances the clamping force on the concrete and the upper main rib and the lower main rib, improves the connecting efficiency of the spring type steel bar joint, and has excellent connecting performance; fourth, the spring type steel bar joint can be applied to the connection of cast-in-place reinforced concrete columns or prefabricated reinforced concrete columns, has a wide application range and strong applicability; and fifth, the provided calculation method is clear in principle, scientific and reasonable, practical and easy to implement, and can guide the structure implementation of the spring type steel bar joint, so as to save cost and improve safety and quality performance. Therefore, the spring type steel bar joint structure is simple in structure, low in cost, reliable in performance, convenient in construction and ecological and environmentally friendly, and has high economic benefits, energy-saving and emission-reducing benefits and social benefits in combination with the corresponding implementation method. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the utility model.

[0014] Figure 2 It is Figure 1Top view of .

[0015] Figure 3 It is the force diagram of the dense segment of the spring.

[0016] Figure 4 for Figure 3 Cross-sectional view.

[0017] Figure 5 Schematic diagram of the concrete hoop force of the dense segment of the spring.

[0018] Figure 6 for Figure 5 Enlarged view of point A. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1-6 As shown, 1. reinforced concrete column, 11. concrete, 2. main reinforcement, 21. upper main reinforcement, 22. lower main reinforcement, 23. annular fixing reinforcement, 24. annular stirrups, 3. spring, 31. dense segment, 32. sparse segment, 4. connector.

[0021] A spring-type steel bar joint, such as Figure 1 、 Figure 2 As shown, it mainly relates to the field of energy-saving ecological bridge construction, and its structure includes multiple main bars 2, which are distributed circumferentially around the outer periphery of a reinforced concrete column 1, and the cross-section of the reinforced concrete column is a columnar component of any shape such as circular, square, or triangular.

[0022] The main reinforcement 2 is the main stress-bearing reinforcement of the cast-in-place reinforced concrete column or the main stress-bearing reinforcement connected to each other when assembling the prefabricated reinforced concrete columns. Each main reinforcement 2 is composed of an upper main reinforcement 21, a lower main reinforcement 22 and a spring 3 or multiple connectors 4 respectively connecting the upper and lower main reinforcements.

[0023] The spring 3 includes a dense segment 31 in the middle and sparse segments 32 at both ends of the dense segment. The inner and outer walls of the spring 3 on each main reinforcement 2 are fixed by annular stirrups 24, and the two end points of the sparse segment 32 of the spring 3 on each main reinforcement 2 are fixed by annular fixing bars 23. Then, a formwork is erected outside the spring-type steel bar joint and cement concrete is poured.

[0024] The annular fixing ribs 23 are fixed to the outer wall of the upper main rib 21 or the lower main rib 22 and the two end points of the sparse segment 32 by binding or welding.

[0025] The annular stirrups 24 are fixed to the inner outer wall of the upper main reinforcement 21 or the lower main reinforcement 22 by binding or welding.

[0026] The dense segments 31 are in close contact with each other to form a tension spring, symmetrically wrapping the upper main reinforcement 21 and the lower main reinforcement 22. The gap between the inner wall of the dense segment 31 and the outer diameter of the upper main reinforcement 21 or the lower main reinforcement 22 is densely filled with concrete 11. The thickness of the outer wall of the dense segment 31 and the edge of the reinforced concrete column 1, that is, the thickness of the protective layer, meets the requirements of the standard specifications; the sparse segment 32 is a safety reserve auxiliary spring, and its length and pitch are determined according to actual conditions.

[0027] The concrete 11 is cement concrete for cast-in-situ reinforced concrete columns or cement concrete for assembling joints of prefabricated reinforced concrete columns.

[0028] The connector 4 is a mechanical connector for steel bars, and three or more connectors are used to symmetrically position and fix the upper main bar 21 and the lower main bar 22 in advance, and then operate the connection of the spring-type steel bar joint.

[0029] A method for implementing a spring-type steel bar joint mainly includes the following steps:

[0030] Step 1: Structural design of spring-type steel bar joints

[0031] ① According to the purpose of spring-type steel bar joints, analyze and calculate the main technical requirements for controlling the tension and preliminarily designing the components in spring-type steel bar joints;

[0032] ② Propose a preliminary design scheme for the spring-type steel bar joint structure;

[0033] ③ Calculate the stress and deformation of each component of the spring-type steel bar joint using Formula 1, Formula 2, and Formula 3, and determine the cross-sectional dimensions of each component and the technical indicators of the materials used;

[0034] ④ Carry out construction drawing design and entrust professional units to produce spring-type steel bar joints, and the quality meets the design requirements;

[0035] Step 2: Implementation of Spring-Type Steel Bar Joints

[0036] ① Turn the ends of the upper and lower main bars of three or more symmetrical main bars into threads that match the connectors and pass the inspection;

[0037] ② When tying and making the lower main reinforcement skeleton, screw all the connector sleeves into the threads of the connection ends of 3 or more symmetrical lower main reinforcements;

[0038] ③ Among the remaining main reinforcements, insert half of the spring's length into the lower main reinforcement from top to bottom, and secure the lower end of the spring with a circular fixing rib by electric welding;

[0039] ④ The upper main reinforcement skeleton is hoisted to the top of the lower main reinforcement. The upper main reinforcements are all inserted into the springs, and half of the sleeve itself is screwed into the corresponding threads of 3 or more upper main reinforcement connection ends to fix the upper and lower main reinforcements. The upper end of the spring is firmly fixed with a ring-shaped fixing rib by electric welding;

[0040] ⑤The inner and outer walls of the spring are firmly fixed by annular stirrups;

[0041] ⑥Establish formwork outside the spring-type steel bar joint and pour cement concrete, and vibrate the concrete to make it dense;

[0042] ⑦ After the formwork is removed and the concrete is cured to a qualified standard, the connection of cast-in-place reinforced concrete columns or prefabricated reinforced concrete columns can be completed.

[0043] The above description is only a specific embodiment of the present invention. Those skilled in the art should understand that any structural design equivalent to this embodiment should be included in the protection scope of the present invention.

Claims

1. A spring-type steel bar joint, characterized in that: The invention comprises a plurality of main bars (2) which are circumferentially distributed around the outer periphery of a reinforced concrete column (1). Each main bar (2) is composed of an upper main bar (21), a lower main bar (22) and a spring (3) or a plurality of connectors (4) respectively connecting the upper and lower main bars. The spring (3) comprises a dense segment (31) in the middle and sparse segments (32) at both ends of the dense segment. The inner and outer walls of the spring (3) on each main bar (2) are fixed by an annular hoop bar (24). The sparse segments (32) of the spring (3) on each main bar (2) are fixed at both end points by an annular fixing bar (23). Then, a template is erected outside the spring-type steel bar joint and cement concrete is poured.

2. A spring-type steel bar joint according to claim 1, characterized in that The concrete (11) is cement concrete for cast-in-situ reinforced concrete columns or cement concrete for prefabricated reinforced concrete column assembly joints. The cross-section of the reinforced concrete column (1) is circular, square or triangular.

3. A spring-type steel bar joint according to claim 1, characterized in that The main reinforcement (2) is the main stress-bearing reinforcement of the cast-in-situ reinforced concrete column or the main stress-bearing reinforcement connected to each other when the prefabricated reinforced concrete column is assembled.

4. A spring-type steel bar joint according to claim 1, characterized in that The annular fixing rib (23) is fixed to the outer wall of the upper main rib (21) or the lower main rib (22) and the two end points of the sparse segment (32) by binding or welding.

5. A spring-type steel bar joint according to claim 1, characterized in that The annular stirrups (24) are fixed to the inner outer wall of the upper main reinforcement (21) or the lower main reinforcement (22) by tying or welding.

6. A spring-type steel bar joint according to claim 1, characterized in that The dense segments (31) are in close contact with each other as tension springs, symmetrically wrapping the upper main reinforcement (21) and the lower main reinforcement (22). The gap between the inner wall of the dense segment (31) and the outer diameter of the upper main reinforcement or the lower main reinforcement is densely filled with concrete. The thickness of the outer wall of the dense segment and the edge of the reinforced concrete column, that is, the thickness of the protective layer, meets the requirements of the standard specification. The sparse segment is a safety reserve auxiliary spring, and its length and pitch are determined according to actual conditions.

7. The spring-type steel bar joint according to claim 1, characterized in that The connector (4) is a mechanical connector for steel bars, and three or more connectors are used to symmetrically position and fix the upper main bars and the lower main bars in advance, and then operate the connection of the spring-type steel bar joints.

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