Developing a Small Size Screw Plate Load Test

Abstract

Soil disturbance can occur during sampling and transportation, or during preparation for testing. Any sample of soils being taken from the ground, transferred to the laboratory, and prepared for testing will be subjected to disturbance. The availability of good geotechnical properties of soils in the laboratory estimation depends on careful testing. Therefore, the results obtained from sophisticated sampling and careful laboratory testing are significantly different with field behavior. In order to minimize errors introduced by soil disturbance, a small size screw plate load test (3SPLT), an in-situ test technique, has been developed and in-situ testing techniques have advantages for the estimation of reliable geotechnical parameters. The 3SPLT is an experiment performed underground by inserting a spiral-type augur screw. The 3SPLT can be conducted in the bore hole after sampling because the size of the screw is sufficiently small. From the laboratory test results, the reliability of 3SPLT is evaluated.

Keywords:

• bore hole
• in situ
• small size screw plate load test
• soil disturbance

Notes

※ .

※ q _u  = ultimate bearing capacity.

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