Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading

被引:1
作者
Soares, Marisa [1 ]
da Fonseca, Antonio Viana [2 ]
Ferreira, Cristiana [2 ]
Rios, Sara [2 ]
机构
[1] Scottish Power, 320 St Vincent St, Glasgow G2 5AD, Scotland
[2] Univ Porto, Fac Engn FEUP, CONSTRUCT GEO, Rua Dr Roberto Frias S N, P-4200465 Porto, Portugal
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 15期
关键词
liquefaction; shear wave velocity; peak undrained deviatoric stress; soil grading; coefficient of uniformity; NONPLASTIC FINES; SANDS; INSTABILITY; STIFFNESS; DENSITY; STRESS;
D O I
10.3390/app13158580
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A large set of undrained compression triaxial tests was carried out on different types of cohesionless soils, from sands to silty sands and silts. Shear wave velocity measurements were also carried out. These tests exhibit distinct state transitions ranging from flow liquefaction to strain softening or strain hardening. With the purpose of defining a framework to assess soil liquefaction, it was found that the ratio between the shear wave velocity (V-S(0)) and the peak undrained deviatoric stress (q(peak)), V-S(0)/q(peak), could be accurately used to define a boundary between liquefaction and strain hardening for sands and between strain softening and strain hardening for silty sands and silts. Since this ratio is a function of the tested material, the prediction of these boundaries can be made as a function of soil grading, namely via the coefficient of uniformity, C-U. Despite not being regarded as a strong geomechanical parameter, C-U is easily determined from a grain-size distribution test and has an empirically proven correlation with critical state parameters.
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页数:18
相关论文
共 49 条
[1]  
Andrus R.D., 1997, P NAT CTR EARTHQ ENG
[2]  
[Anonymous], 2010, C39C39M 10 STANDARD, P1, DOI DOI 10.1520/D2487-11
[3]  
Arroyo M., 2021, Final report
[4]  
AST, 2016, STANDARD TEST METHOD, DOI [10.1520/D4254-16, DOI 10.1520/D4254-16]
[5]   Effect of grading characteristics on the undrained shear strength of sand: review with new evidences [J].
Bayat, E. ;
Bayat, M. .
ARABIAN JOURNAL OF GEOSCIENCES, 2013, 6 (11) :4409-4418
[6]  
Bedin J, 2012, GEOTECHNIQUE, V62, P263, DOI [10.1680/geot.10.P037, 10.1680/geot.10.P.037]
[7]  
Bedin J., 2010, Ph.D. Thesis
[8]   A STATE PARAMETER FOR SANDS [J].
BEEN, K ;
JEFFERIES, MG .
GEOTECHNIQUE, 1985, 35 (02) :99-112
[9]  
Casagrande A.J. J.B. S. o. C.E., 1936, CHARACTERISTICS COHE, V23, P13
[10]  
CEN, 2004, LAB TEST SOIL 9