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Probabilistic Evaluation of Liquefaction Potential
A probabilistic method for evaluating liquefaction potential is presented, using as an example a site at President Island, near Memphis, Tennessee and the New Madrid seismic zone. In this method the liquefaction potential of a soil layer is estimated by using the factor of safety F = R/L, where L is the shear stress ratio and R is the resistance shear ratio. Combined with the depth and thickness of each liquefied layer, F yields Iwasaki's (1982) liquefaction potential index, P. By including uncertainties in a variety of site parameters, 81 earthquake-site models are established. Given a moment magnitude, these earthquake-site models will yield probabilities of the occurrence of liquefaction of varying degrees of severity. Repetition of this procedure with varying moment magnitudes will permit construction of a liquefaction potential probability matrix and fragility curves. The proposed method incorporates local site conditions and regional seismicity and can easily be made to accommodate uncertainties in seismic and site parameters.
Probabilistic Evaluation of Liquefaction Potential
A probabilistic method for evaluating liquefaction potential is presented, using as an example a site at President Island, near Memphis, Tennessee and the New Madrid seismic zone. In this method the liquefaction potential of a soil layer is estimated by using the factor of safety F = R/L, where L is the shear stress ratio and R is the resistance shear ratio. Combined with the depth and thickness of each liquefied layer, F yields Iwasaki's (1982) liquefaction potential index, P. By including uncertainties in a variety of site parameters, 81 earthquake-site models are established. Given a moment magnitude, these earthquake-site models will yield probabilities of the occurrence of liquefaction of varying degrees of severity. Repetition of this procedure with varying moment magnitudes will permit construction of a liquefaction potential probability matrix and fragility curves. The proposed method incorporates local site conditions and regional seismicity and can easily be made to accommodate uncertainties in seismic and site parameters.
Probabilistic Evaluation of Liquefaction Potential
H. H. M. Hwang (author) / C. S. Lee (author)
1991
87 pages
Report
No indication
English
Geology & Geophysics , Soil Sciences , Soil & Rock Mechanics , Liquefaction , Earthquakes , Probability theory , Soil pressure , Stochastic analysis , Nonlinear systems , Earthquake engineering , Dynamic response , Statistical analysis , Soil mechanics , Shear stress , Seismic waves , Memphis County(Tennessee)
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