Axial Unloading Test of Soil Based on the GDS Triaxial Apparatus

Abstract:

Normal triaxial apparatus is suited to the loading stress path test, some stress path triaxial apparatus can be used to unload radial load smaller than the axial load, but it is difficult to unload axial load smaller than the radial load or even unload the axial load to zero. Using the iso-diameter headgear, different axial-radial unload ratio tests were done on the GDS triaxial apparatus, and the axial load was unloaded smaller than the radial load. During the test, it was found there are some deficiencies in the GDSLAB system. The results conformed to the characteristics of unloading test, which well verified the correctness of the test method and test results.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 407-411
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.407
• Online since: September 2014
• Authors: Shu Chao Zhang*, Shao Hui He, Pei Wang, Lin Li
• Keywords: Axial Unloading Test, GDS Triaxial Apparatus, K₀ consolidation, Stress Path

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