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    Stress Dependency of Shear-Wave Velocity Measurements in Soils

    Source: Journal of Geotechnical and Geoenvironmental Engineering:;2017:;Volume ( 143 ):;issue: 002
    Author:
    Taeseo Ku
    ,
    Sathya Subramanian
    ,
    Sung-Woo Moon
    ,
    Jongwon Jung
    DOI: 10.1061/(ASCE)GT.1943-5606.0001592
    Publisher: American Society of Civil Engineers
    Abstract: Based on an extensive in situ shear-wave velocity (Vs) database, this study aims to not only examine the stress-dependent characteristics of in situ Vs from a generalized Vs-stress model [Vs=α×(σc′)β], but also provide valuable reference information on site-specific stress-dependency of Vs for global geotechnical sites. For in situ Vs, the site-specific material constants (α and β) at each site had wider ranges when compared to typical values reported from laboratory tests. This is mainly attributed to different test conditions and inherent in situ site characteristics. The in situ-based site-specific material constants in this study are compared with laboratory-based material constants suggested in previous studies. Evidently, each α–β trend varies on laboratory tests and in situ tests and a unified relationship is appropriate only when β is less than 0.5. Thus, separate relationships between material constants are proposed for laboratory-based and in situ-based measurements. The results imply that the new models should be developed to apply in situ data.
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      Stress Dependency of Shear-Wave Velocity Measurements in Soils

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4239670
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    contributor authorTaeseo Ku
    contributor authorSathya Subramanian
    contributor authorSung-Woo Moon
    contributor authorJongwon Jung
    date accessioned2017-12-16T09:11:08Z
    date available2017-12-16T09:11:08Z
    date issued2017
    identifier other%28ASCE%29GT.1943-5606.0001592.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4239670
    description abstractBased on an extensive in situ shear-wave velocity (Vs) database, this study aims to not only examine the stress-dependent characteristics of in situ Vs from a generalized Vs-stress model [Vs=α×(σc′)β], but also provide valuable reference information on site-specific stress-dependency of Vs for global geotechnical sites. For in situ Vs, the site-specific material constants (α and β) at each site had wider ranges when compared to typical values reported from laboratory tests. This is mainly attributed to different test conditions and inherent in situ site characteristics. The in situ-based site-specific material constants in this study are compared with laboratory-based material constants suggested in previous studies. Evidently, each α–β trend varies on laboratory tests and in situ tests and a unified relationship is appropriate only when β is less than 0.5. Thus, separate relationships between material constants are proposed for laboratory-based and in situ-based measurements. The results imply that the new models should be developed to apply in situ data.
    publisherAmerican Society of Civil Engineers
    titleStress Dependency of Shear-Wave Velocity Measurements in Soils
    typeJournal Paper
    journal volume143
    journal issue2
    journal titleJournal of Geotechnical and Geoenvironmental Engineering
    identifier doi10.1061/(ASCE)GT.1943-5606.0001592
    treeJournal of Geotechnical and Geoenvironmental Engineering:;2017:;Volume ( 143 ):;issue: 002
    contenttypeFulltext
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