Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Seismic Response Characteristics of Layered Ground Considering Viscoelastic Effects of Clay

점성토의 점탄성 특성을 고려한 층상지반의 지진응답특성

  • 김용성 (강원대학교 농업생명과학대학 지역건설공학과)
  • Received : 2011.04.04
  • Accepted : 2011.05.02
  • Published : 2011.05.31
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Abstract

In order to estimate the viscous effects of clay over a wide range of strain levels, we confirmed the performance of a viscoelastic-viscoplastic constitutive model by simulating cyclic undrained triaxial tests to determine the cyclic strength and deformation characteristics of natural marine clay. The viscoelastic-viscoplastic constitutive model was then incorporated into an effective stress-based seismic response analysis to estimate the effects of an intermediate clay layer on the behavior of sand layers. Seismic response was simulated by the cyclic viscoelastic-viscoplastic constitutive model created with data recorded at Rokko Island, Kobe, Japan. The results show that a cyclic viscoelastic-viscoplastic constitutive model can provide a good description of dynamic behavior including viscoelastic effects, within a small strain range.

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References

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