Hollow cylinder torsional shear apparatus remodeling sample compacting instrument

Abstract

The invention discloses a remodeling sample compactor of a hollow columnar torsion shear apparatus, comprising a die and a compactor. The die comprises a sample pedestal, a sample outer die, a sample inner die, an extension long barrel and an intension long barrel, wherein, the sample outer die and the sample inner die are arranged on the sample pedestal; the extension long barrel is arranged on the upper end of the sample outer die; and the intension long barrel is arranged on the upper end of the sample inner die. The compactor includes a planarization ring, a lower force transmission barrel, an upper force transmission barrel, a cover plate of a compaction barrel, a compacting hammer, a guide rod and a displacement restrictor, wherein, the planarization ring is disposed on the lower end of the lower force transmission barrel; the upper force transmission barrel is disposed below the cover plate of the compaction barrel; the guide rod is arranged on the top of the cover plate of the compaction barrel; the compacting hammer is arranged on the guide rod; and the displacement restrictor is disposed on the upper end of the guide rod. The invention has the advantages of simple usage, convenient operation and saved test time, and can prepare uniform and standard remodeling sample, thus providing significant help for remodeling sample test of the hollow columnar torsion shear apparatus.

Description

technical field [0001] The invention relates to indoor soil dynamics test equipment, in particular to a remodeling sample compactor for a hollow cylinder torsional shear instrument. Background technique [0002] The layered compaction method is a common method for preparing remodeled samples in indoor geotechnical tests. Zhejiang University and the British GDS company jointly developed a 5Hz dynamic hollow cylinder torsional shear instrument, but the manufacturer only configures a long plastic vibrator with a diameter of 5mm. As a compacting tool for reshaping samples, using this plastic rod as a compacting tool has the following problems in sample preparation: 1) It is difficult to control the thickness of each layer; 2) It is difficult to control the uniformity of each layer and the flatness of each layer. 3) problems such as the inability to prepare samples with high relative density. Contents of the invention [0003] The object of the present invention is to provide ...

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Problems solved by technology

[0002] The layered compaction method is a common method for preparing remodeled samples in indoor geotechnical tests. Zhejiang University and the British GDS company jointly developed a 5Hz dynamic hollow cylindrical torsional shear instrument, but the manufacturer only configures a long plastic vibrator with a diameter of 5mm. As a compacting tool for reshaping samples, using this plastic rod as a compacting tool has the following problems in sample preparation: 1) It is difficult to control the thickness of each layer; 2) It is difficult to control the uniformity of each layer and the flatness of each layer. 3) problems such as the inability to prepare samples with high relative density

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