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- Publisher Website: 10.1016/j.soildyn.2018.11.029
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Article: Cyclic behavior and liquefaction resistance of silty sands with presence of initial static shear stress
Title | Cyclic behavior and liquefaction resistance of silty sands with presence of initial static shear stress |
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Authors | |
Keywords | Critical state theory Cyclic loading Initial shear stress Liquefaction Silty sands |
Issue Date | 2019 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildyn |
Citation | Soil Dynamics and Earthquake Engineering, 2019, v. 122, p. 274-289 How to Cite? |
Abstract | The liquefaction resistance of silty sands and the potential effect of initial static shear stress are major concerns in seismic design of dams and embankments. This paper presents a systematic experimental study on non-plastic silty sands to address these concerns. It is shown that the concept of threshold α (αth) proposed by Yang and Sze (2011) to characterize the impact of α (representing the initial static shear stress level) on cyclic resistance (CRR) of clean sands is applicable to silty sands as well. When α < αth, CRR increases with increasing α, otherwise it decreases with increasing α. The threshold α is affected by the initial packing density, the initial effective confining pressure and the fines content. An improved state dependency of the threshold α, which is regardless of fines content, is proposed in the framework of critical state soil mechanics by using the state parameter (ψ). An analysis platform, known as CRR-ψ platform and developed based on clean sand data, is shown to have the capability of characterizing the state dependence of CRR for sands with varying fines contents. This platform in conjunction with the unified αth-ψ correlation provides a unified and consistent framework for understanding the complicated effects of initial static shear stress on soil liquefaction and for quantifying such effects for engineering practice. |
Persistent Identifier | http://hdl.handle.net/10722/273850 |
ISSN | 2023 Impact Factor: 4.2 2023 SCImago Journal Rankings: 1.244 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | WEI, X | - |
dc.contributor.author | Yang, J | - |
dc.date.accessioned | 2019-08-18T14:49:50Z | - |
dc.date.available | 2019-08-18T14:49:50Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Soil Dynamics and Earthquake Engineering, 2019, v. 122, p. 274-289 | - |
dc.identifier.issn | 0267-7261 | - |
dc.identifier.uri | http://hdl.handle.net/10722/273850 | - |
dc.description.abstract | The liquefaction resistance of silty sands and the potential effect of initial static shear stress are major concerns in seismic design of dams and embankments. This paper presents a systematic experimental study on non-plastic silty sands to address these concerns. It is shown that the concept of threshold α (αth) proposed by Yang and Sze (2011) to characterize the impact of α (representing the initial static shear stress level) on cyclic resistance (CRR) of clean sands is applicable to silty sands as well. When α < αth, CRR increases with increasing α, otherwise it decreases with increasing α. The threshold α is affected by the initial packing density, the initial effective confining pressure and the fines content. An improved state dependency of the threshold α, which is regardless of fines content, is proposed in the framework of critical state soil mechanics by using the state parameter (ψ). An analysis platform, known as CRR-ψ platform and developed based on clean sand data, is shown to have the capability of characterizing the state dependence of CRR for sands with varying fines contents. This platform in conjunction with the unified αth-ψ correlation provides a unified and consistent framework for understanding the complicated effects of initial static shear stress on soil liquefaction and for quantifying such effects for engineering practice. | - |
dc.language | eng | - |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildyn | - |
dc.relation.ispartof | Soil Dynamics and Earthquake Engineering | - |
dc.subject | Critical state theory | - |
dc.subject | Cyclic loading | - |
dc.subject | Initial shear stress | - |
dc.subject | Liquefaction | - |
dc.subject | Silty sands | - |
dc.title | Cyclic behavior and liquefaction resistance of silty sands with presence of initial static shear stress | - |
dc.type | Article | - |
dc.identifier.email | Yang, J: junyang@hkucc.hku.hk | - |
dc.identifier.authority | Yang, J=rp00201 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.soildyn.2018.11.029 | - |
dc.identifier.scopus | eid_2-s2.0-85065518662 | - |
dc.identifier.hkuros | 301882 | - |
dc.identifier.volume | 122 | - |
dc.identifier.spage | 274 | - |
dc.identifier.epage | 289 | - |
dc.identifier.isi | WOS:000469891200020 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0267-7261 | - |