A long-term water immersion constant load device suitable for compaction test pieces

Abstract

The invention discloses a long-term soaking dead load device suitable for a compaction test piece. The long-term soaking dead load device suitable for the compaction test piece comprises a heavy object container, a cover board, a chassis and a compaction barrel, wherein the heavy object container is arranged on the cover board; the cover board is arranged on a soil sample in the compaction barrel; the compaction barrel and the soil sample are soaked in water contained in the chassis; and the vertical axes of the heavy object container, the cover board and the chassis are located on the same perpendicular line. The device can simulate the stress function of padding at different depths of a real roadbed, and is convenient to use and capable of being loaded for a long term, and the number can be read continuously. Meanwhile, the soil sample in the compaction barrel is fully soaked in water; a guide bearing sleeve is arranged on the chassis, and a guide bearing pin shaft is arranged on the cover board, so that the function that a heavy object does not deflect when being loaded is achieved. Three dial indicator devices are arranged around the test piece at equal intervals (at the interval of 120 degrees in the annular direction), and the functions of measuring settling of the test piece and rectifying slight inclination of the cover board are achieved.

Description

technical field [0001] The invention belongs to the fields of foundation engineering and subgrade engineering, and particularly relates to a long-term water-immersion constant-load device suitable for compacting test pieces. Background technique [0002] In foundation engineering and subgrade engineering, it is often encountered that it is necessary to study the subgrade filler (fine-grained soil or coarse-grained soil filler) under stress, deformation and settlement under severe conditions such as water immersion. At present, when doing indoor tests for such problems in engineering, most of them adopt the method of instantaneous loading, or use the press for long-term loading, but the press can only do one test piece at a time, and multiple sets of test pieces are time-consuming and expensive. During the test, it is difficult to load the specimen on the press in water, and the obtained results have large deviations. Contents of the invention [0003] The object of the pr...

AI Technical Summary

Problems solved by technology

At present, when doing indoor tests for such problems in engineering, most of them adopt the method of instantaneous loading, or use the press for long-term loading, but the press can only do one test piece at a time, and multiple sets of test pieces are time-consuming and expensive. During the test, the test piece on the press is difficult to load in water, and the results obtained have large deviations

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