A Nonlinear Dynamic Soil- Foundation Interaction Model Using Fiber Element and Its Application to Seismic Response Analysis of Bridge

DOI

Bibliographic Information

Other Title
  • ファイバー要素を用いた地盤・基礎の非線形動的相互作用モデルとその橋梁全体系の地震応答解析への適用

Abstract

This paper presents a nonlinear spring multi-Winkler model for nonlinear seismic response of foundation and superstructure system using the fiber element method. The nonlinear soil reactions are modeled by using the spring coefficients per unit area of foundation surface with 3 components consisting of normal traction and two shear fractions on foundation surface. The shapes of monotonic curves and the hysteresis loops of the 3 springs are evaluated using the Mohr-Coulomb yield criterion and no rigidity of tension, and by the concrete crack model. The proposed spring model can incorporate such effects as separation and slippage at the soil foundation interface, and also the effect of coupling between the normal traction and two shear tractions on foundation surface. To demonstrate an applicability of the proposed model, a nonlinear seismic response analysis of cable stayed bridge supported by the two caisson foundations is performed and the effects of nonlinear behaviors of soil reactions are discussed.

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Details 詳細情報について

  • CRID
    1390282680182598912
  • NII Article ID
    130004257975
  • DOI
    10.2208/journalam.10.1047
  • ISSN
    1884832X
    13459139
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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