Earthquake Geotechnical Engineering

Institution:
IUSS Pavia
Specialization:
ES - Engineering Seismology
Term:
Spring 2010
Teacher(s):
ELLEN M. RATHJE
Credits:
6
Date (from - to):
24/05/2010 – 18/06/2010

One dimensional wave propagation

  • elastic body wave propagation
  • surface waves
  • differences between p, s, and surface waves
  • material and radiation damping
  • linear elastic,  visco‐elastic,  and  nonlinear  inelastic  stress‐strain behavior
  • equivalent‐linear  representation  of  soil  behavior  for ground response problems
  • nonlinear  representation  of  soil  behavior  for  ground response problems
  • nonlinear models with pore pressure generation

Dynamic soil behavior (low‐strain range):

  • Gmax, Vs, method of measuring Vs.
  • Effects of sampling disturbance
  • Correlations between Vs (or Gmax) and other parameters

G/Gmax, damping:

  • Concept of threshold strain and recommended relations

Dynamic soil behavior (high‐strain range):

  • test types used for cyclic testing
  • effects of sample reconstitution
  • critical state soil mechanics
  • stress paths and soil behavior under monotonic loading
  •  static  liquefaction,  flow  liquefaction  surface,  phase transformation line
  • stress paths during cyclic loading
  • cyclic behavior of saturated sands and clays

Site response analysis:

  • transfer function for simple elastic layer on rigid base
  • transfer function for layered elastic system
  • SHAKE‐type analyses
  • effects of soil properties on site response
  • nonlinear analyses

Newmark sliding block analysis

  • introduce pseudo‐static analysis and its use in calculating ky
  • sliding block concept, integration process
  • Newmark‐based charts
  • advantages and limitations

Suggested readings:

Kramer (1996) Geotechnical Earthquake Engineering, Prentice Hall.