Experimental loading device for shear-type energy-dissipating beams subjected to pure shear forces

Abstract

The invention relates to a testing and loading device for pure shear on a shear type link beam. The whole testing device comprises a loading frame part, an active loading part, a passive loading part and a shear type link beam part, wherein a loading frame is formed by connecting loading beams and framework beams; the framework beams and the loading beams are connected by high-strength bolts, high-strength pull rods, box type cushion blocks and connecting plates; the active loading part consists of a high-strength bolt left hinge support base, a sensor, a pull and press jack and a left triangular counterforce frame, the left hinge support base is connected with the sensor through a screw rod, the sensor is connected with the pull and press jack through a screw rod, and the pull and press jack is fixedly arranged on the left triangular counterforce bracket through cushion plates and high-strength bolts; the passive loading part consists of a right hinge support base and a right triangular counterforce bracket, and the right hinge support base is fixedly arranged on the right triangular counterforce bracket through cushion plates and high-strength bolts; the shear type link beam can be independently loaded, so that the shear type link beam can endure pure shear.

Description

technical field [0001] The invention relates to the technical field of test loading devices, in particular to the test loading technology for a shear-type energy-dissipating beam segment subjected to pure shear force. Background technique [0002] In the existing loading test devices for shear-type energy-dissipating beam sections, the shear-type energy-dissipating beam section is loaded as a part of the frame beam. The disadvantages are: (1) Since it is not loaded independently, this The method cannot obtain the mechanical performance of the real shear-type energy-dissipating beam section; (2) After the shear-type energy-dissipating beam section is damaged, it is necessary to replace the entire frame beam and the shear-type energy-dissipating beam section when testing again , time-consuming and uneconomical; (3) The stress state of the shear-type energy-dissipating beam segment in pure shear cannot be realized, and the mechanical performance of the shear-type energy-dissipa...

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Problems solved by technology

[0002] In the existing loading test devices for shear-type energy-dissipating beam sections, the shear-type energy-dissipating beam section is loaded as a part of the frame beam. The disadvantages are: (1) Since it is not loaded independently, this The method cannot obtain the mechanical performance of the real shear-type energy-dissipating beam section; (2) After the shear-type energy-dissipating beam section is damaged, the entire frame beam and the shear-type energy-dissipating beam section need to be replaced when retesting , time-consuming and uneconomical; (3) It is impossible to realize the stress state of the shear-type energy-dissipating beam segment in pure shear, and it is impossible to accurately obtain the mechanical performance of the shear-type energy-dissipating beam segment under pure shear force

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