Smart Structures and Systems

  • 제7권4호
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  • Pages.275-287
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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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DOI QR코드

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Evaluation of preconsolidation stress by shear wave velocity

  • Yoon, Hyung-Koo (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Changho (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kim, Hyun-Ki (School of Civil and Environmental Engineering, Kookmin University) ;
  • Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
  • 투고 : 2010.06.30
  • 심사 : 2010.08.25
  • 발행 : 2011.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The behaviors of saturated soils such as compressibility and permeability are distinguished by preconsolidation stress. Preconsolidation stress becomes an important design parameter in geotechnical structures. The goal of this study is to introduce a new method for the evaluation of preconsolidation stress based on the shear wave velocity at small strain, using Busan, Incheon, and Gwangyang clays in Korea. Standard consolidation tests are conducted by using an oedometer cell equipped with bender elements. The preconsolidation stresses estimated by shear wave velocity are compared with those evaluated by the Casagrande, constrained modulus, work, and logarithmic methods. The preconsolidation stresses estimated by the shear wave velocity produce very similar values to those evaluated by the Onitsuka method (one of the logarithmic methods), which yields an almost real preconsolidation stress. This study shows that the shear wave velocity method provides a reliable method for evaluating preconsolidation stress and can be used as a complementary method.

키워드

참고문헌

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  13. Haar Wavelet Transform for Arrival Time Identification in Bender Element Tests vol.43, pp.4, 2020, https://doi.org/10.1520/gtj20180400
  14. Response of Transitional Mixtures Retaining Memory of In-Situ Overburden Pressure Monitored Using Electromagnetic and Piezo Crystal Sensors vol.21, pp.7, 2011, https://doi.org/10.3390/s21072570