Piezoelectric semi-active controlled steel bar connecting device

Abstract

The invention discloses a piezoelectric semi-active controlled steel bar connecting device. The piezoelectric semi-active controlled steel bar connecting device comprises two square steel blocks and steel sheets with clamping heads, wherein piezoelectric ceramic blocks are arranged between the steel sheets with the clamping heads, the upper and lower sides of a semi-arc clamping piece are connected with the square steel blocks through compressed springs, a small jack is arranged between the compressed springs on the upper and lower sides of the semi-arc clamping piece, a small jack base is installed on the side surfaces of the square steel blocks, the steel sheets with the clamping heads are fixed to end plates with clamping grooves through bolts and are fixed to the square steel blocks, and the steel sheets and the end plates are fixed to the square steel blocks through bolts. According to the piezoelectric semi-active controlled steel bar connecting device, piezoelectric ceramics are compressed to generate power, the small jack is pushed, and double thrust of the compressed springs is set, so that both sides of upper and lower longitudinal reinforcing steel bars are subjected to the same thrust till the upper and lower longitudinal reinforcing steel bars are in a balanced state, and the device is suitable for connecting the longitudinal reinforcing steel bars with any diameter, is not limited to the diameters of the reinforcing steel bars and has a good fixing effect.

Description

technical field [0001] The invention relates to the technical field of steel bar connection devices, in particular to a piezoelectric semi-active control steel bar connection device. Background technique [0002] Steel bars are one of the most commonly used materials in the construction industry. The quality of the connection performance of steel bar joints will directly affect its function, especially the connection quality of vertical steel bar joints in main load-bearing components such as walls and columns will directly affect the entire building. bearing capacity and durability. At present, the connection methods for longitudinal reinforcement in load-bearing members are: binding connection, electroslag pressure welding connection, and mechanical connection. The main function of the longitudinal reinforcement is to bear the compression and resist the overturning moment effect caused by the horizontal load or the horizontal action of the earthquake. The current three co...

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Problems solved by technology

The main function of the longitudinal reinforcement is to bear the compression and resist the overturning moment effect caused by the horizontal load or the horizontal action of the earthquake. The current three connection methods cannot effectively solve the eccentricity of the connection of the longitudinal reinforcement, which leads to the formation of the joint of the reinforcement when the longitudinal reinforcement transfers the load Under eccentric stress, the steel bars will bend and deform due to unbalanced stress, greatly reducing the vertical bearing capacity, thereby affecting the mechanical properties of the load-bearing member, and the uneven load after bending deformation will generate uneven internal force on the nearby concrete. As a result, tensile stress is generated, and the concrete has good compressive performance, but poor tensile performance, which has a certain impact on the durability of reinforced concrete members, and it is impossible to correct the deviation after the eccentricity of the steel bar occurs. In actual engineering, the vertical steel bar becomes Therefore, there is no good solution for the eccentricity of the steel bar and the inability to correct the deviation after the eccentricity occurs.

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