�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€�u‰‰�W Vol�F 7Šª ”N�F 1986”N •Å�F 1741-1746•Å ’˜ŽÒ�i˜a�j�F - ƒ^ƒCƒgƒ‹�i˜a�j�F - �´˜^�i˜a�j�F
- ƒL�[ƒ��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒ�i‰p�j�F Koichiro ASANO ƒ^ƒCƒgƒ‹�i‰p�j�F APPLICATION OF PROBABILISTIC APPROACH TO ASEISMIC SAFETY DESIGN OF STRUCTURAL SYSTEM �´˜^�i‰p�j�F
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. ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W