地震動を受けるRC構造物の限界応答変形量を保証するに必要な耐力算出法とその精度検証

概要

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Recently, in seismic design, there is tendency to evaluate a building by the performance. One method of the evaluatoin is to estimate maximum response deformation for a building modeled by single degree system. In the previous paper, it was confirmed that EUV, which is defined by the intensity of energy input in stationary response, was almost equal to Actual Energy Input Velocity (ΔEmax/Te). Requisite Strength (Py) was calculated by solving the relationship, EIV=(ΔEmax/Te). In order to caIculate the Requisite Strength by this method, it is necessary to determine the Actual Energy Input Velocity (ΔEmax/Te), Total Input Energy (ED) and Plastic Deflection coefficient(d). In tihs paper, a method to determine ΔEmax/Te and d was proposed. ΔEmax/Te was estimated by elastic response analysis with 5% damping and d was estimated by maximum ductility and residual ductility. In case of ED, Akiyama's method, that is, ED was estimated by elastic response analysis with damping was used Elasto-plastic response analysis was carried out to investigate the accuracy of Requisite Strength calculated by the proposed model. As a result of the analysis, it was shown that the proposed model had generally enough accuracy.But for further improvement of the accuracy, it was important to estimate accurately the Plastic Deflection, particularly in the case of Hyogo earthquake which caused strong plastic deflection.
2000-06-30