Browse > Article
http://dx.doi.org/10.7843/kgs.2010.26.2.5

A Study on the Liquefaction Resistance of Anisotropic Sample under Real Earthquake Loading  

Lee, Chae-Jin (Dept. of Civil Engrg., Yonsei Univ.)
Kim, Soo-Il (Dept. of Civil Engrg., Yonsei Univ.)
Jeong, Sang-Seom (Dept. of Civil Engrg., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.2, 2010 , pp. 5-14 More about this Journal
Abstract
In this study, cyclic triaxial tests were performed under anisotropically consolidated condition by using irregular earthquake loading to consider in-situ condition and seismic wave. Jumunjin sand with a relative density 50 percent was used in the tests. The consolidation pressure ratio (K) was changed from 0.5 to 1.0. The Ofunato and Hachinohe wave were applied as irregular earthquake loadings and liquefaction resistance strengths of each specimen were estimated from the excess pore water pressure (EPWP) ratio. As a results of the cyclic triaxial tests, EPWP ratio increased with increased K value. It shows that isotropically consolidated sand is more susceptible to liquefaction than anisotropically consolidated sand under equal confining pressure and dynamic loadings. From the test results, the relationship between K and EPWP ratio normalized by effective confining pressure and deviator stress was proposed. And a new factor which corrects the liquefaction resistance strength for the in-situ stress condition is proposed.
Keywords
Anisotropic condition; Cyclic triaxial test; Earthquake loading; Excess pore water pressure; Liquefaction resistance strength;
Citations & Related Records
연도 인용수 순위
  • Reference
1 강병희 (2000), "이방압밀이 흙의 강도에 미치는 영향", 한국지반공학회 2000 가을 학술발표회 논문집, pp.3-14.
2 김방식, 윤여원, 이승훈 (2005), "이방압밀된 자갈-모래 혼합토의 액상화 거동", 한국지반환경공학회 학술발표회 논문집, pp.279-284.
3 박성용 (2002), "실지진하중을 이용한 중진 지역에서의 액상화 저항강도에 관한 실험적 연구", 연세대학교 석사학위 논문.
4 Law, K. T. and Cao, Y. L. (1990), "An Energy Approach for Assessing Seismic Liquefaction Potential", Canadian Geotechnical Journal, Vol.23, 19, pp.320-329.
5 Port and Harbour Research Institute (1997), Handbook on Liquefaction Remediation of Reclaimed Land, A. A. Balkema.
6 Vaid, Y. P. and Chern, J. C. (1983), "Effects of Static Shear on Resistance to Liquefaction", Soils and Foundations, Vol.23, No.1, pp.47-60.   DOI
7 Ghionna, V. N. and Porcino, D. (2006), "Liquefaction Resistance of Undisturbed and Reconstituted Samples of a Natural Coarse Sand from Undrained Cyclic Triaxial Tests", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol.132, Issue 2, pp.194-202.
8 Ishihara, K. and Li, S. I. (1972), "Liquefaction of Saturated Sand in Triaxial Torsion Shear Test", Soils and Foundations, Vol.12, No.2, pp.19-39.   DOI
9 Ishihara, K. and Yamazaki, A. and Haga, K. (1985), "Liquefaction of $K_0-Consolidated$ Sand Under Cyclic Rotation of Principal Stress Direction with Lateral Constraint", Soils and Foundations, Vol.25, No.4, pp.63-74   DOI
10 Erguvanli, M. A. and Ozaydin, I. K. (1983), "Effect of Initial Stress Conditions on Liquefaction of Sands : Experiments and An Interpretation", Soils and Foundations, Vol.23, No.1, pp.102-107.   DOI
11 이송, 구자갑, 윤광현, 정기문 (2003), "사질토의 액상화 저항에 대한 이방압밀의 영향", 한국구조물진단학회 2003년도 봄 학술발표회 논문집, pp.183-194.
12 한국지반공학회 (2006), "지반구조물의 내진설계", 구미서관, pp.343-347.
13 황선주 (2004), "다양한 입력하중에서의 액상화 발생 특성 비교 연구", 연세대학교 석사학위 논문.
14 신윤섭 (1999), "우리 나라 지진특성을 고려한 액상화 평가기법의 개선방안에 관한 연구", 연세대학교 석사학위 논문.