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7Šª
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1986”N
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1741-1746•Å
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PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Koichiro ASANO
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APPLICATION OF PROBABILISTIC APPROACH TO ASEISMIC SAFETY DESIGN OF STRUCTURAL SYSTEM
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An ordinary differential equation is derived for the covariance response of multi-degree-of-freedom structural systems with strong nonlinearity. Using the covariance response, the technique is developed for the maximum ductility factor response and the safety or non-exceeding probability o f the structural system. An earthquake ex citation model is presented and non-stationary parameters of the excitation model are determined on the basis of the recorded earthquake accelerogram. Numerical examples are presented and the usefulness of the technique is demonstrated.
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