Frequency Domain Site Response with Pore Pressure

by Edward Kavazanjian, Jr., Parsons Brinckerhoff Quade &, Douglas Inc, United States,
Jaw-Nan Wang, Parsons Brinckerhoff Quade &, Douglas Inc, United States,



Document Type: Proceeding Paper

Part of: Probabilistic Methods in Civil Engineering

Abstract:

A frequency domain analysis for seismic site response and liquefaction potential is developed. The analysis is based upon a nonstationary random vibration theory. The model uses an effective pore pressure to account for softening due to pore pressure development. Results of the analysis include the variation of the statistical parameters for acceleration, shear strain, shear stress, and pore pressure with time and depth and seismic fragility curves that express liquefaction potential as a function of the root mean square of acceleration and duration.

Subject Headings: Soil liquefaction | Soil analysis | Pore pressure | Stress analysis | Vibration | Soil pressure | Seismic tests

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