Smart Structures and Systems

  • 제7권4호
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  • Pages.289-302
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  • 2011
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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An experimental procedure for evaluating the consolidation state of marine clay deposits using shear wave velocity

  • Chang, Ilhan (Department of Civil and Environmental Engineering, KAIST) ;
  • Kwon, Tae-Hyuk (Earth Sciences Division, Lawrence Berkeley National Laboratory) ;
  • Cho, Gye-Chun (Department of Civil and Environmental Engineering, KAIST)
  • 투고 : 2010.07.01
  • 심사 : 2010.09.01
  • 발행 : 2011.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

In marine clay deposits, naturally formed or artificially reclaimed, the evaluation and monitoring of the consolidation process has been a critical issue in civil engineering practices due to the time frame required for completing the consolidation process, which range from several days to several years. While complementing the conventional iconographic method suggested by Casagrande and recently developed in-situ techniques that measure the shear wave, this study suggests an alternative experimental procedure that can be used to evaluate the consolidation state of marine clay deposits using the shear wave velocity. A laboratory consolidation testing apparatus was implemented with bimorph-type piezoelectric bender elements to determine the effective stress-shear wave velocity (${\sigma}^{\prime}-V_s$) relationship with the marine clays of interest. The in-situ consolidation state was then evaluated by comparing the in-situ shear wave velocity data with the effective stress-shear wave velocity relationships obtained from laboratory experiments. The suggested methodology was applied and verified at three different sites in South Korea, i.e., a foreshore site in Incheon, a submarine deposit in Busan, and an estuary delta deposit in Busan. It is found that the shear wave-based experimental procedure presented in this paper can be effectively and reliably used to evaluate the consolidation state of marine clay deposits.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)

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피인용 문헌

  1. Shear strength behavior and parameters of microbial gellan gum-treated soils: from sand to clay pp.1861-1133, 2018, https://doi.org/10.1007/s11440-018-0641-x
  2. Determining the effects of depositional processes on consolidation behavior of sediment using shear-wave velocity pp.1521-0618, 2018, https://doi.org/10.1080/1064119X.2018.1524953
  3. Geotechnical design parameter evaluation using the alluvial plain characteristics in southeastern Iraq vol.11, pp.20, 2018, https://doi.org/10.1007/s12517-018-4019-z
  4. Global semi-empirical relationships for correlating soil unit weight with shear wave velocity by void-ratio function vol.55, pp.8, 2018, https://doi.org/10.1139/cgj-2017-0226