Development of a new equivalent linear algorithm with rate dependent soil model

Duhee Park, Youssef M.A. Hashash, Chi Yong Song, Byung Sik Chun, Hyun Gi Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

One dimensional site response analysis is widely used in estimating local seismic site effects. The soil behavior in the analysis is assumed to be independent of the rate of the seismic loading, while the laboratory results show that both the shear modulus and damping of cohesive soils are influenced by the rate of loading. The influence of the rate dependent soil behavior on ground motion propagation is not well understood. A new simplified equivalent linear analysis method is developed that approximates the rate dependence of soil behavior and is used to perform a suite of one dimensional site response analyses. The rate-dependent shear modulus has negligible influence, while rate-dependent soil damping filters out high frequency components of the motion and reduces the computed ground response.

Original languageEnglish (US)
Title of host publicationProceedings of The Seventeenth 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
Pages1568-1573
Number of pages6
StatePublished - 2007
Event17th 2007 International Offshore and Polar Engineering Conference, ISOPE 2007 - Lisbon, Portugal
Duration: Jul 1 2007Jul 6 2007

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other17th 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
Country/TerritoryPortugal
CityLisbon
Period7/1/077/6/07

Keywords

  • Damping
  • Equivalent linear
  • Rate-dependent
  • Shear modulus
  • Site response analysis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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