A kind of concrete biaxial strength measuring device and measuring method

Abstract

The invention discloses a concrete biaxial strength measuring device, comprising a mounting bottom plate, a metal frame, a first bracket, a first sleeve ring, a locking pin, first mounting blocks andsecond mounting blocks, wherein a plurality of balls uniformly arranged are movably connected to the inner sides of the first mounting blocks, a pressure cylinder is connected between the outer side of the first mounting block on either side and the metal frame on the same side, a first mounting plate is arranged on the inner side of each first mounting block, the inner side of each first mountingplate is fixedly connected with a pressure loading head, a second sliding rod is fixedly connected to the inner side of each second mounting block through two second brackets, a second sleeve ring movably sleeves each second sliding rod, the outer side of each second sleeve ring is connected with a second mounting plate through a steel rope, the inner side of each second mounting plate is movablyhinged to a tension loading head, and a tension cylinder is connected between the outer side of the second mounting block on either side and the metal frame on the same side. The concrete biaxial strength measuring device can overcome the deficiencies in the prior art and has more accurate tensile strength test data.

Description

Technical field[0001]The invention relates to the field of mechanical structures, in particular to a concrete biaxial strength measuring device and a measuring method.Background technique[0002]Concrete tensile strength refers to the axial tensile strength of concrete, that is, the stress value obtained by dividing the maximum load that the concrete sample bears when it breaks after being tensioned by the cross-sectional area. With the gradual development of national infrastructure construction, the impact on buildings or The tensile strength of structures has higher requirements, and more and more engineering problems involve the tensile strength of concrete. Therefore, testing the tensile strength of concrete samples is helpful to accurately understand the tensile strength of buildings or structures. . Most of the concrete structures in actual projects are in a state of multiaxial stress, but there is no unified standard for multiaxial tests of concrete in the world. As a result, t...

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Problems solved by technology

Most concrete structures in actual engineering are in a state of multiaxial stress, but there is currently no unified standard for concrete multiaxial tests in the world, resulting in the design theory of concrete structures being designed according to the state of uniaxial stress. Chinese utility model patent CN 201955268U Disclosed is a loading test device for biaxial tension and compression of concrete. The loading test device for biaxial tension and compression of this structure can be used to measure the mechanical strength of concrete specimens under tension and pressure at the same time, and can directly measure the However, during the test process of the test device with this structure, it is easy to change the position of the concrete specimen in the state of compression or tension, resulting in inaccurate test results, which limits its scope of application

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