Journal of the Society of Disaster Information (한국재난정보학회 논문집)

The Korean Society of Disaster Information (한국재난정보학회)
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Effect of Uncertain N-values to Seismic Performance Evaluation of Underground Structures

불확실한 지반의 N값이 지중구조물의 내진성능평가에 미치는 영향

  • 박지환 (건국대학교 토목공학과) ;
  • 이태형 (건국대학교 토목공학과)
  • Received : 2010.10.05
  • Accepted : 2010.12.14
  • Published : 2010.12.31
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Abstract

There has been tighten up the need of seismic retrofit about 31 public facilites since published "Korean Earthquake Damage Prevention Law". Therefore, seismic studies have been developed and enforced the studies. Measuring dynamic stiffness of subsurface materials influence on seismic performance evaluation to build up seismic retrofit. The soil dynamic properties for seismic performance evaluation are N-value from using SPT(standard penetration test), dynamic shear elastic modulus and dynamic deformation modulus using laboratory tests. The most unscientific element in ground dynamic properties involved uncertainties is obviously N-value using SPT. This study shows that effect of N-value included natural and artificial uncertainties to seismic performance evaluation of ground structures is not only approached probabilistic analysis using FOSM method and tornado diagram, but also review how to spread effect of seismic performance evaluation of ground structures.

Keywords

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