Transient stochastic analysis of nonlinear response of earth and rock-fill dams to spatially varying ground motion

Haciefendioglu K.

STRUCTURAL ENGINEERING AND MECHANICS, vol.22, no.6, pp.647-664, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 6
  • Publication Date: 2006
  • Doi Number: 10.12989/sem.2006.22.6.647
  • Journal Name: STRUCTURAL ENGINEERING AND MECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.647-664
  • Keywords: spatially varying ground motion, stationary response, transient response, equivalent linear method, earth-fill dam, rock-fill dam, stochastic response
  • Karadeniz Technical University Affiliated: No

Abstract

The main purpose of this paper is to investigate the effect of transient stochastic analysis on nonlinear response of earth and rock-fill dams to spatially varying ground motion. The dam models are analyzed by a stochastic finite element method based on the equivalent linear method which considers the nonlinear variation of soil shear moduli and damping ratio as a function of shear strain. The spatial variability of ground motion is taken into account with the incoherence, wave-passage and site response effects. Stationary as well as transient stochastic response analyses are performed for the considered dam types. A time dependent frequency response function is used throughout the study for transient stochastic responses. It is observed that stationarity is a reasonable assumption for earth and rock-fill dams to typical durations of strong shaking.