報告書番号

U02019

タイトル（和文）

鉄筋コンクリート製地中構造物の耐震性能照査法の高度化（その３） --部材非線形モデルを用いた地盤－構造物連成系解析手法の適用性の検証--

タイトル（英文）

Development of Advanced Earthquake Resistant Performance Verification on Reinforced Concrete Underground StructuresPart 3 -Applicability of Soil-Structure Interaction Analysis Using Nonlinear Member Model-

概要 （図表や脚注は「報告書全文」に掲載しております）

鉄筋コンクリート製地中構造物の耐震性能照査法の確立を目的に，大型振動台による動的実験に対するシミュレーションにより，地盤－構造物連成系の解析モデル（地盤：修正Ramberg-Osgoodモデル，構造物：軸力変動型トリリニアモデル，地盤－構造物間：ジョイント要素）を構築し，その適用性を検証した．解析結果を検証した結果，実務上必要とする範囲で，地盤および構造物の動的応答特性を精度良く評価可能であることが確認され，標記手法の適用性を確認した．

概要 （英文）

The objective of this study is to obtain verification data concerning performance of RC duct-type underground structures subject to strong earthquakes. This paper presents the investigated results of numerical simulation obtained from shaking table tests of box-type structure models with a scale of about 1/2. We proposed practical nonlinear member models, by which mechanical properties of RC member and soil are defined as hysteresis models (RC : axial force dependent degrading tri-linear model , soil : modified Ramberg-Osgood model), and joint elements are used to evaluate the interaction along the interface of two materials between soil and RC structures including the slippage and separation. Consequently, the proposed models could simulate the test results on the deformation of soil and RC structure, as well as damage of RC structures which is important in verifying their seismic performance with practical accuracy.

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