Measurements of Shear Wave Velocity for Collapsible Soil

被引:0
|
作者
EI-Shafee, Omar [1 ]
Sasanakul, Inthuorn [2 ]
Abdoun, Tarek [3 ]
Zeghal, Mourad [1 ]
机构
[1] Rensselaer Polytech Inst, Civil & Environm Engn Dept, Troy, NY 12180 USA
[2] Univ South Carolina, Coll Engn & Comp, Civil & Environm Engn, Columbia, SC 29208 USA
[3] New York Univ Abu Dhabi, Dept Civil & Urban Engn, POB 129188, Abu Dhabi, U Arab Emirates
来源
GEOTECHNICS | 2024年 / 4卷 / 02期
关键词
hydraulic fill; resonant column test; shear wave velocity; bender elements; collapsible soil; dry pluviation; MODULI; SANDS;
D O I
10.3390/geotechnics4020024
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This paper examines the effects of collapsible soil structure on shear wave velocity. The study attempts to simulate hydraulic fill sand deposits, which represent a natural soil deposition process that can result in a collapsible soil structure. A series of resonant column tests and bender element tests on Ottawa sand was conducted on sand specimens and prepared by dry pluviation and simulated hydraulic fill methods subjected to various confining pressures. Shear wave velocities measured from both methods of deposition are compared and discussed. Results from this study show that for soil specimens with the same void ratio, samples prepared by simulated hydraulic fill have a lower shear modulus and shear wave velocity than the specimens prepared by dry pluviation, and the differences are more pronounced at higher confining pressures. The resonant column test results performed in this study were consistent with results from the discrete element analysis, full-scale testing, and centrifuge testing. The discrete element analysis suggests that soil fabric and number of particle contacts are the key factors affecting the shear wave velocity. These factors are dependent on the methods of deposition. Results from this study examining hydraulic fill collapsible structure shear wave velocity provide a step forward toward a better correlation between soil dynamic properties measured in field and laboratory tests.
引用
收藏
页码:430 / 446
页数:17
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