Symmetrical double-shear interface adhesion test device and test method

Abstract

The invention, which belongs to the technical field of mechanical experiment devices, discloses a symmetrical double-shear interface adhesion test device comprising a ball hinge connecting rod, screwrods, a backing plate, plain concrete, a horizontal installation device, an upper bearing plate and a lower bearing plate. Four symmetrical upper bearing plate smooth circular holes are formed in fourcorners of the upper bearing plate; and four lower bearing plate inner threaded holes are formed in the four corners of the lower bearing plate, wherein the holes and the central axis of the upper bearing plate are arranged coaxially. The upper bearing plate and the lower bearing plate are connected with the corresponding lower bearing plate inner threaded holes through the upper bearing plate smooth circular holes by screw rods. The screw rods are provided with upper nuts and lower nuts. According to the symmetrical double-shear interface adhesion test device, centering of a test piece can be controlled; the influence of external forces in the installation process can be avoided; the test accuracy can be improved; the test process is controlled; and the test efficiency can be improved and the convenient test process can be provided.

Description

technical field [0001] The invention belongs to the technical field of mechanical experiment devices, and in particular relates to a symmetrical double-shear interface bonding test device and a test method. Background technique [0002] In the normal working stage of the building structure, the reinforced concrete structure is allowed to have certain cracks, and the transverse cracks caused by the cracking become the channel for the corrosive medium to penetrate into the structure. Junction performance is affected, destroying structural stability. The survey results show that a large number of old reinforced concrete structures are below normal use or structural safety requirements, and there is an urgent need to repair or strengthen these structures to improve their durability and load-bearing capacity. Repair and reinforcement methods include replacing damaged old concrete with new concrete, shotcrete or wire mesh concrete, increasing the cross-sectional area of ​​steel b...

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: most of the existing tests are carried out based on universal testing machines, and most of the tests use single shear, so it is difficult to ensure that

Images