A New Centrifugal Testing Method: Descending Gravity Test
A New Centrifugal Testing Method: Descending Gravity Test
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一种新的离心测试方法：重力下降测试
DOI：
10.1520/gtj100213
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
H. Ko
中科院分区：
文献类型：
--
作者：
O. Cinicioglu;D. Znidarčić;H. Ko
This study describes a new centrifugal test, called the descending gravity test (DGT), which combines in situ shear strength tests with a new material preparation technique. The material preparation technique provides soil profiles of constant overconsolidation ratio and varying void ratio in cohesive soils. When the DGT is repeated for different acceleration levels during centrifuge testing, it provides the void ratio-undrained shear strength relationship for various magnitudes of overconsolidation ratio. Therefore it renders the observation of the uncoupled effects of void ratio and overconsolidation ratio on the generation of shear strength feasible. The DGT has been successfully conducted on a clay sample in laboratory centrifuge facilities. The method requires the unloading of the clay cake, and since swelling of a sample is more rapid than its consolidation, the test takes a relatively short time.
