Support counterforce testing device and testing system comprising same

Abstract

The invention provides a support counterforce testing device, and the device comprises a balance support which comprises a pedestal and a hinge support, and the hinge support comprises a hinge supportbottom plate, a hinge plate, and a hinge shaft. The hinge plate is rotatably arranged on the hinge support base plate through a hinge shaft, and the hinge support is movably arranged on the base in the vertical direction through a limiting assembly. And a cavity for accommodating the support counter-force tester is arranged between the hinge support bottom plate and the base. The support counterforce testing device has the advantages that the overall structure is simplified; the hinged support is movably arranged on the base in the vertical direction through the limiting assembly, and the pressure generated by the beam test piece can be completely transmitted to the pressure sensor through the hinged support bottom plate in combination with the position arrangement of the support counter-force tester, so that the measurement precision is further improved. The invention further discloses a support counterforce testing system using the support conterforce testing device, the support counterforce can be effectively measured, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of performance testing of beam specimens, in particular to a device for testing support reaction force and a testing system including the device. Background technique [0002] Concrete and steel bars are typical rate-sensitive materials, which will exhibit different mechanical and deformation properties under a certain loading strain rate than under static loading. It can be seen that the mechanical behavior of reinforced concrete beams composed of concrete and steel bars will also be affected by the loading rate. [0003] At present, neither the pseudo-static test nor the pseudo-dynamic test can reflect the influence of the material strain rate; the test cost of the shaking table test is relatively high. It is not convenient to directly carry out the failure test of the bearing capacity of beam specimens. [0004] At present, the more commonly used methods are: using the drop hammer and the electro-hydrau...

AI Technical Summary

Problems solved by technology

The disadvantage of this device for measuring the reaction force of the support is that when the balance support is subjected to the pressure of the beam specimen to produce a downward displacement trend, the screw will also produce the same motion state, that is, the screw will bear part of the pressure, resulting in The measurement result of the seat reaction force is too small, which reduces the accuracy of the test data

[0007] The second method is to paste the strain gauge at the support and convert the measured value through the force calibration coefficient. This method is complicated to measure, difficult to operate, and lacks directness

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