Hollow column sample manufacturing device and hollow column sample manufacturing method

Abstract

The invention discloses a hollow column sample manufacturing device, and relates to the technical field of test material manufacturing equipment. The hollow column sample manufacturing device comprises an outer mold, a central column, a base, a fastener and a pressing device. The outer mold is formed by butt joint of a left half mold and a right half mold, and the fastener is locked and connectedwith the upper end of the left half mold and the upper end of the right half mold; and the lower end of the left half mold and the lower end of the right half mold are both connected with an outer mold positioning structure in a matched mode, one end of the center column is connected with a center column positioning structure in the matched mode, and the pressing device comprises an annular pressing block which can slide in an annular space formed by the center column and the outer mold through hole. The invention also discloses a manufacturing method for manufacturing the hollow column sampleby using the hollow column sample manufacturing device. The method comprises the following steps: adding a soil body into the annular space, compacting the soil body by using the pressing device, taking out the pressing device and the central column, taking down the fastener and the base, and separating the left half mold from the right half mold to obtain the hollow column sample. And the manufacturing efficiency and quality of the hollow column sample can be improved.

Description

technical field [0001] The invention relates to the technical field of test material production, in particular to a hollow column sample production device and a hollow column sample production method. Background technique [0002] In recent years, with the vigorous development of infrastructure such as railways and expressways in my country, many scholars have devoted themselves to the study of the strength and deformation of soil under dynamic load conditions. At present, most of the tests carried out for this research use GDS hollow torsional shear Tester, GCTS hollow torsional shear tester and other foreign test instruments; hollow torsional shear tester, as a relatively complex rock and soil indoor test instrument, can well simulate the impact of soil under dynamic loads such as traffic and earthquakes. It is a relatively advanced test device for testing soil deformation and stability. The samples required by these test instruments are relatively large. The general size sp...

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Problems solved by technology

[0002] In recent years, with the vigorous development of infrastructure such as railways and highways in my country, many scholars have devoted themselves to the study of the strength and deformation of soil under dynamic load conditions. At present, most of the tests carried out for this research use GDS hollow torsional shear Tester, GCTS Hollow Torsional Shear Tester and other foreign test instruments; Hollow Torsional Shear Tester, as a relatively complex rock and soil indoor test instrument, can well simulate the impact of soil under dynamic loads such as traffic and earthquakes. It is a relatively advanced test dev

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