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This document provides a technical basis for formulating probabilistic approaches to liquefaction evaluation. The three basic elements of probabilistic liquefaction analysis are described: (1) uncertainty in the earthquake load, (2) uncertainty in the available resistance, and (3) uncertainty in the method of analysis. The probabilistic approach is built from the steps in a deterministic liquefaction analysis; however, the input parameters, such as penetration resistance, site stratigraphy, acceleration, and magnitude, are treated as random variables and the accuracy of the method of analysis is factored in as part of a capacity-demand model. Uncertainty in the earthquake load is generally treated with a probabilistic seismic hazard analysis which introduces time as a parameter. The site stratigraphy and engineering properties are generally treated as one-, two-, or three-dimensional random fields. Uncertainty in the method of analysis is generally estimated with logit regression analysis of the field performance data base.
This document provides a technical basis for formulating probabilistic approaches to liquefaction evaluation. The three basic elements of probabilistic liquefaction analysis are described: (1) uncertainty in the earthquake load, (2) uncertainty in the available resistance, and (3) uncertainty in the method of analysis. The probabilistic approach is built from the steps in a deterministic liquefaction analysis; however, the input parameters, such as penetration resistance, site stratigraphy, acceleration, and magnitude, are treated as random variables and the accuracy of the method of analysis is factored in as part of a capacity-demand model. Uncertainty in the earthquake load is generally treated with a probabilistic seismic hazard analysis which introduces time as a parameter. The site stratigraphy and engineering properties are generally treated as one-, two-, or three-dimensional random fields. Uncertainty in the method of analysis is generally estimated with logit regression analysis of the field performance data base.
Probabilistic Liquefaction Analysis
M. E. Hynes (author)
1999
54 pages
Report
No indication
English
Geology & Geophysics , Soil & Rock Mechanics , Structural Analyses , Reactor Engineering & Nuclear Power Plants , Liquefaction , Seismic effects , Nuclear facilities , Earthquake damage , Ground motion , Soil-structure interactions , Seismic waves , Acceleration , Earthquake magnitude , Penetration , Deformation , Soil mechanics , Hazards , Stratigraphy , Probability , Uncertainty analysis , Stochastic processes , Regression analysis , Capacity-demand models , Probabilistic seismic hazard analysis
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