鉄筋コンクリート構造物の繰り返し加力作用による剛性低下性状とそのモデル化方法

概要

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The main purpose of this paper is to confirm applicability of a model to stiffness degradation phenomenon of reinforced concrete structures. The model presented in this study was developed by the author about ten years ago, and has already been used in many earthquake response analyses. Although the foundation of this model lies in the experimental test results conserning to rather small deflection region in post-yielding domain, not a examination has been made in large deflection region or in severely damaged region. In this paper, the values calculated by this model will be compared with experimental results of alternately cyclic loading tests, and some examples of close agreement between calculated results and experimental ones will be presented. The most important aspect of this model is to slide, little by little, the aiming point of hysteresis curve along the skeleton curve toward enlarging deflection on every occasion of load reversal. Even when the slope of skeleton curve is negative, this methed of modelling can be applied without any modification to simulate the stiffness degradation phenomenon. By makig use the idealized model investigated hereon, the restoring force characteristics of reinforced concrete structures can be simulated satisfactorily.
近畿大学の論文
1984-12-01