Middle section method uniaxial compression reading auxiliary device and using method thereof

Abstract

The invention discloses a middle section method uniaxial compression reading auxiliary device and a using method thereof. The middle section method uniaxial compression reading auxiliary device comprises an upper long-strip-shaped square rod, a lantern ring, a built-in screw, a fixed vertical plate, a dial indicator, a flat-head screw, a nut, a screw hole, a fixed knob and a lower long-strip-shaped square rod, wherein the lantern ring comprises an upper annular lantern ring and a lower annular lantern ring, four screws are arranged in the lantern ring at an angle of 90 degrees, and the tips ofthe screws face inwards and are used for sleeving a cylindrical sample and being fixed on the sample; one end of the lower long-strip-shaped square rod is fixed to the lantern ring through the rotaryknob and can freely rotate along the plane, the other end of the lower long-strip-shaped square rod is provided with a screw hole used for containing the flat-head screw, and the flat-head screw is fixed through the upper nut and the lower nut so as to guarantee that the upper end of the square rod has enough screw length. According to the device, through cooperative use of the fixed vertical plate, the screws and the nuts, the deformation of the middle sections of different lengths of the cylindrical sample can be tested, the test precision is improved, the structure is simple, the carryingis convenient, and application and popularization in production and teaching are easy.

Description

technical field [0001] The invention belongs to the technical field of geotechnical tests, and in particular relates to an auxiliary device for uniaxial compression reading by an intermediate section method and a use method thereof, which are used for testing the uniaxial compression modulus of a cylindrical specimen. Background technique [0002] The uniaxial compressive modulus is the ratio of stress to strain in uniaxial compression and is determined by the slope of the initial segment of the stress-strain curve. The uniaxial compression modulus can quantitatively reflect the ability of the base material to resist deformation, and this method is simple to operate and has strong application, but because the test strain is not easy to measure, the variability of the uniaxial compression modulus is high, and the middle section method uniaxial Compression tests are widely used, but the intermediate strain of the sample is not easy to measure, which affects its application eff...

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Problems solved by technology

The uniaxial compression modulus can quantitatively reflect the ability of the base material to resist deformation, and this method is simple to operate and has strong application, but because the test strain is not easy to measure, the variability of the uniaxial compression modulus is high, and the middle section method uniaxial Compression test is widely used, but the intermediate strain of the sample is not easy to measure, which affects its application effect

The existing device mainly converts the deformation of the middle section after the overall deformation of the test sample. The error is large and the accuracy is not enough, which affects the modulus test results. In order to solve the problem of the existing uniaxial compression modulus test device and method being outdated,

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