Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/15/8580 |
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| author | Marisa Soares António Viana da Fonseca Cristiana Ferreira Sara Rios |
| author_facet | Marisa Soares António Viana da Fonseca Cristiana Ferreira Sara Rios |
| author_sort | Marisa Soares |
| collection | DOAJ |
| description | 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 (<i>V<sub>S</sub></i><sub>0</sub>) and the peak undrained deviatoric stress (<i>q<sub>peak</sub></i>), <i>V<sub>S</sub></i><sub>0</sub>/<i>q<sub>peak</sub></i>, 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, <i>C<sub>U</sub></i>. Despite not being regarded as a strong geomechanical parameter, <i>C<sub>U</sub></i> is easily determined from a grain-size distribution test and has an empirically proven correlation with critical state parameters. |
| first_indexed | 2024-03-11T00:32:37Z |
| format | Article |
| id | doaj.art-c71b36784f3a4d8f9ad98f0b28674344 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T00:32:37Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c71b36784f3a4d8f9ad98f0b286743442023-11-18T22:34:45ZengMDPI AGApplied Sciences2076-34172023-07-011315858010.3390/app13158580Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil GradingMarisa Soares0António Viana da Fonseca1Cristiana Ferreira2Sara Rios3Scottish Power, 320 St. Vincent Street, Glasgow G2 5AD, UKCONSTRUCT-GEO, Faculty of Engineering (FEUP), University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, PortugalCONSTRUCT-GEO, Faculty of Engineering (FEUP), University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, PortugalCONSTRUCT-GEO, Faculty of Engineering (FEUP), University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, PortugalA 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 (<i>V<sub>S</sub></i><sub>0</sub>) and the peak undrained deviatoric stress (<i>q<sub>peak</sub></i>), <i>V<sub>S</sub></i><sub>0</sub>/<i>q<sub>peak</sub></i>, 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, <i>C<sub>U</sub></i>. Despite not being regarded as a strong geomechanical parameter, <i>C<sub>U</sub></i> is easily determined from a grain-size distribution test and has an empirically proven correlation with critical state parameters.https://www.mdpi.com/2076-3417/13/15/8580liquefactionshear wave velocitypeak undrained deviatoric stresssoil gradingcoefficient of uniformity |
| spellingShingle | Marisa Soares António Viana da Fonseca Cristiana Ferreira Sara Rios Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading Applied Sciences liquefaction shear wave velocity peak undrained deviatoric stress soil grading coefficient of uniformity |
| title | Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading |
| title_full | Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading |
| title_fullStr | Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading |
| title_full_unstemmed | Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading |
| title_short | Static Liquefaction Assessment Combining Shear Wave Velocity, Peak Strength and Soil Grading |
| title_sort | static liquefaction assessment combining shear wave velocity peak strength and soil grading |
| topic | liquefaction shear wave velocity peak undrained deviatoric stress soil grading coefficient of uniformity |
| url | https://www.mdpi.com/2076-3417/13/15/8580 |
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