地盤-構造物系の非線形復元力特性の同定

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タイトル別名
  • IDENTIFICATION OF RESTORING FORCE CHARACTERISTICS OF NONLINEAR SOIL-STRUCTURE SYSTEM
  • ジバン コウゾウブツケイ ノ ヒセンケイ フクゲンリョク トクセイ ノ ドウテ

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説明

We here report a method to identify the nonlinear restoring force characteristicsof multidegree-of-freedom soil-structure system.Because the soil-structure system under the seismic loading usually exhibitsvarious hysteretic behaviour and has different histeresis loop for the soil and thestructure, many restoring force models of the soil-structure system are proposed.When we identify the restoring force characteristics of soil-structure system, however, it is convenient to use only one restoring force model. In this paper, weadopt a versatile model which can be applied to a large class of hysteretic systemsand identify the model parameters with extended Kalman filter technique.After describing the formulation of identification and showing the validity ofthis method by the numerical simulation, we applied this method to identify therestoring force characteristics using the observation records which were obtainedthrough the hybrid experiment of soil-foundation structure system.

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