Drained Instability in Loose Granular Material
| Autor: | Yuanqiang Cai, Quanyang Dong, Jun Wang, Chuan Gu, Changjie Xu, Hsein Juang, Zhongxuan Yang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0211 other engineering and technologies
Soil Science 02 engineering and technology 010502 geochemistry & geophysics Overburden pressure Granular material 01 natural sciences Instability Stress relief Stress (mechanics) Infiltration (hydrology) Shear (geology) Slope stability Geotechnical engineering Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Geomechanics. 16 |
| ISSN: | 1943-5622 1532-3641 |
| Popis: | The constant shear drained (CSD) test is considered an appropriate test to simulate the instability behavior of soils in slopes under water infiltration conditions or lateral stress relief. However, contradiction of the drained instability in loose granular material exists in the reported test results, which is considered because of the condition of constant deviatoric stress (q) not strictly satisfied in the literature. Because the variation of q during the CSD test has significant effects on the test results, more data from tests under a true constant q condition are needed to clarify this subject. In this paper, CSD and conventional undrained triaxial tests in both compressive and extensive loading were performed to investigate the instability behavior of loose sand. All the CSD tests were conducted by advanced variable confining pressure triaxial apparatus, in which a true constant q was maintained during the test; thus, more reliable results were obtained. It is observed experimentally that w... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|