A piezoelectric semi-active control steel bar connection device

Abstract

The present invention discloses a piezoelectric semi-active control steel bar connection device, comprising two square steel blocks and a steel sheet with a clamp, a piezoelectric ceramic block is arranged between the steel sheet with the clamp and the steel sheet, the upper and lower sides of the semi-arc clamp are connected to the square steel block through compression springs, a small jack is arranged between the compression springs on the upper and lower sides of the semi-arc clamp, the small jack base is installed on the side of the square steel block, the steel sheet with the clamp is fixed to the end plate with a slot and fixed to the square steel block by bolts, and the steel sheet and the end plate are fixed to the square steel block by bolts. The present invention generates electricity by piezoelectric ceramics under pressure, pushes the small jack and sets the double thrust of the compression spring, so that the upper and lower longitudinal steel bars are subjected to the same thrust until they are in a balanced state, and is suitable for connecting longitudinal steel bars of any diameter, is not limited by the diameter of the steel bar, and achieves a better fixing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar connection devices, and in particular to a piezoelectric semi-actively controlled steel bar connection device. Background Art

[0002] Rebar is one of the most commonly used main materials in the construction industry. The quality of the connection performance of the rebar joints will directly affect its role, especially the connection quality of the vertical rebar joints in the main load-bearing components such as walls and columns will directly affect the bearing capacity and durability of the entire building. At present, the connection methods for the longitudinal rebars in the load-bearing components are: binding connection, electroslag pressure welding connection, and mechanical connection. The main function of the longitudinal reinforcement is to bear compression and resist the overturning moment effect caused by horizontal loads or horizontal earthquake effects. The three current connection methods cannot effectively solve the eccentricity of the longitudinal reinforcement connection, resulting in eccentric force at the reinforcement connection when the longitudinal reinforcement transfers the load. The reinforcement will bend and deform due to uneven force, greatly reducing the vertical bearing capacity, thereby affecting the mechanical properties of the load-bearing components. The uneven load generated after bending and deformation will produce uneven internal force on the nearby concrete, thereby generating tensile stress. The concrete has good compressive performance but poor tensile performance, which has a certain impact on the durability of reinforced concrete components. Moreover, it is impossible to correct the eccentricity of the reinforcement after it occurs. In actual projects, the diameter change of vertical reinforcement often occurs. Therefore, there is currently no better solution to the eccentricity of the reinforcement and the inability to correct the eccentricity after it occurs. Summary of the invention

[0003] In view of the above technical problems in the related art, the present invention proposes a piezoelectric semi-active control steel bar connection device, which can overcome the above shortcomings of the prior art.

[0004] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0005] A piezoelectric semi-actively controlled steel bar connection device comprises two square steel blocks and a steel sheet with a clamp, a piezoelectric ceramic block is arranged between the steel sheet with the clamp and the steel sheet, the upper and lower sides of the semi-arc clamp are connected to the square steel block through compression springs, a small jack is arranged between the compression springs on the upper and lower sides of the semi-arc clamp, the base of the small jack is installed on the side of the square steel block, the steel sheet with the clamp is fixed to the end plate with a clamping groove and fixed to the square steel block by bolts, and the steel sheet and the end plate are fixed to the square steel block by bolts.

[0006] Furthermore, the compression spring is parallel and symmetrical to the small jack.

[0007] Furthermore, a total of four semi-arc-shaped clips are connected to the inner sides of the two square steel blocks through compression springs.

[0008] Furthermore, the electric wires pass through the square steel block and are connected to the piezoelectric ceramic block and the internal power supply of the small jack.

[0009] Furthermore, four small jacks are installed on the inner side of the square steel block.

[0010] The beneficial effects of the present invention are as follows: by generating electricity under pressure through the piezoelectric ceramic, a small jack is pushed and a double thrust of a compression spring is set, so that both sides of the upper and lower longitudinal steel bars are subjected to the same thrust until they are in a balanced state. It is suitable for connecting longitudinal steel bars of any diameter and is not limited by the diameter of the steel bars, so as to achieve a better fixing effect. Automatic centering can be performed to avoid the current eccentric stress situation caused by the change in diameter of the steel bars. When the building is affected by an earthquake or the like, resulting in the displacement of the steel bars, the building can also be repaired, thereby greatly improving the durability of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.

[0012] Figure 1 1 is a schematic elevation view of a piezoelectric semi-actively controlled steel bar connection device according to an embodiment of the present invention.

[0013] Figure 2 1 is a schematic plan view of a piezoelectric semi-actively controlled steel bar connection device according to an embodiment of the present invention.

[0014] In the figure: 1. square steel block, 2. compression spring, 3. small jack, 4. semi-arc clip, 5. end plate with slot, 6. bolt, 7. steel sheet with clamp, 8. piezoelectric ceramic block, 9. end plate, 10. steel sheet, 11. wire. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0016] like Figure 1As shown, a piezoelectric semi-active control steel bar connection device according to an embodiment of the present invention includes two square steel blocks 1 and a steel sheet 7 with a clamp, a piezoelectric ceramic block 8 is arranged between the steel sheet 7 with a clamp and the steel sheet 10, the steel sheet 7 with a clamp can move up and down in the clamping slot, the steel sheet 7 with a clamp is fixed to the end plate 5 with a clamping slot and fixed to the square steel block 1 by bolts 6, the steel sheet 10 and the end plate 9 are both fixed to the square steel block 1 by bolts 6, the upper and lower sides of the semi-arc clamp 4 are connected to the square steel block 1 by compression springs 2, a small jack 3 is arranged between the compression springs 2 on the upper and lower sides of the semi-arc clamp 4, and the base of the small jack 3 is installed on the side of the square steel block 1. Among them, the compression spring 2 and the small jack 3 are parallel and symmetrical, and the wire 11 runs through the inside of the square steel block 1 and is connected to the piezoelectric ceramic block 8 and the internal power supply of the small jack 3.

[0017] Among them, four semi-arc-shaped clips 4 are connected to the inner sides of the two square steel blocks 1 through compression springs 2, and four small jacks 3 are installed on the inner sides of the square steel blocks 1.

[0018] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0019] First, place the lower end of the device at the vertical steel bar joint, and insert the vertical steel bars to be connected from the upper opening. The gravity of the steel bars will cause the steel sheet with the clamp to move downward. The gravity acts on the piezoelectric ceramic block, which generates electrical energy and transmits it to the small jack through wires, causing the small jack to push the semi-arc clamp to move until the semi-arc clamp tightly fixes the steel bars and stops moving.

[0020] The device of the present invention is suitable for steel bars of any diameter and is not limited by the diameter of the steel bars. The arc of the semi-arc clamp can be adjusted according to the diameter of the steel bars to ensure that the steel bars can be clamped and a better fixing effect can be achieved.

[0021] In summary, with the help of the above-mentioned technical scheme of the present invention, compression springs are arranged on the upper and lower sides of the semi-arc clamp, which together with the small jack push the semi-arc clamp to move, thereby increasing the gripping force of the steel bars and more effectively ensuring the quality of the steel bar connection; and because the compression springs and the small jack are symmetrically arranged, the semi-arc clamp has the same clamping speed for the steel bars and is subjected to equal and opposite forces, ensuring that the steel bars are located at the center of the axis when in a balanced state, thereby playing a centering role.

[0022] As the height of the floors increases during actual construction, the pressure on the steel bars above will gradually increase over time, and the piezoelectric ceramic blocks will generate more electrical energy, causing the small jack to generate a greater thrust, making the semi-arc clamps have a greater tightening force on the steel bars, making the steel bars more centered. At the same time, when the steel bars have become eccentric, the eccentricity will be corrected as the load increases. When the building is affected by an earthquake and other factors, resulting in the displacement of the steel bars, it can also be repaired, greatly improving the durability of the building.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A piezoelectric semi-active control steel bar connection device, comprising two square steel blocks (1) and a steel sheet with a clamp (7), characterized in that: A piezoelectric ceramic block (8) is provided between the steel sheet (7) with a clamp and the steel sheet (10); the upper and lower sides of the semi-arc clamp (4) are connected to the square steel block (1) through compression springs (2); a small jack (3) is provided between the compression springs (2) on the upper and lower sides of the semi-arc clamp (4); the base of the small jack (3) is installed on the side of the square steel block (1); the steel sheet (7) with a clamp is fixed to the end plate (5) with a clamping groove and fixed to the square steel block (1) through bolts (6); the steel sheet (10) and the end plate (9) are fixed to the square steel block (1) through bolts (6); the compression spring (2) and the small jack (3) are parallel and symmetrical; four small jacks (3) are installed on the inner side of the square steel block (1).

2. The piezoelectric semi-active control steel bar connection device according to claim 1, characterized in that: A total of four semi-arc-shaped clips (4) are connected to the inner sides of the two square steel blocks (1) via compression springs (2).

3. The piezoelectric semi-active control steel bar connection device according to claim 1, characterized in that: The electric wire (11) passes through the interior of the square steel block (1) and is connected to the piezoelectric ceramic block (8) and the internal power supply of the small jack (3).

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