Manufacturing mould for annular shearing test sample

Abstract

The invention relates to a manufacturing mould for an annular shearing test sample. The manufacturing mould comprises a base 3. The manufacturing mould is characterized by further comprising an inner ring 1, an outer ring 2, a base 3 and an annular cover 4; an inner annular slot and an outer annular slot which are respectively used for accommodating the inner ring 1 and the outer ring 2 are formed on the base; the inner annular slot and the outer annular slot are concentric with each other; the outer ring 2 is encircled by more than two annular arcs; an inner diameter of the annular cover 4 is matched with an outer diameter of the inner ring 1; and the outer diameter of the annular cover 4 is matched with the inner diameter of the outer ring 2. The height of the annular cover is confirmed according to the height of the to-be-manufactured mould.

Description

technical field [0001] The invention relates to a mold for making ring shear test samples. Background technique [0002] In recent years, the ring shear test has become the main method for the study of soil strength under large deformation conditions. Many countries have also carried out long-term and in-depth research on the development and application of the ring shear instrument to increase the accuracy of the experimental results. Purpose. However, the preparation of specimens for ring shear tests has not been thoroughly explored. The preparation of the samples still adopts the traditional preparation method. The traditional sample preparation method is mainly: first use the compaction method or consolidation method to prepare the required remodeling soil sample, then use a thin-walled ring knife to cut off the upper and lower excess parts, and use a small-sized ring knife to remove The middle part makes it form a hollow sample. [0003] Traditional test means and me...

AI Technical Summary

Problems solved by technology

First of all, the volume of the sample cannot be precisely controlled, which will cause a large error for tests with high density requirements, and secondly, the soil will be squeezed during the operation

Deform the soil before the test; finally, for foam light soil and other types of soil samples, the structure has large pores and is not suitable for cutting, so the previous cutting and digging methods will cause damage to the outer and inner walls of the soil sample , cannot make the sample size more accurate, etc.

Images