�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶�W Vol�F 9-1Šª ”N�F 1994”N •Å�F 961-966•Å ’˜ŽÒ�i˜a�j�F ŒÜ�\—’�@�rˆê ƒ^ƒCƒgƒ‹�i˜a�j�F ƒGƒlƒ‹ƒM�[‚É‚æ‚é‰t�󉻈À‘S—¦‚Ì•]‰¿ �´˜^�i˜a�j�F
- ƒL�[ƒ��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒ�i‰p�j�F Shunichi IGARASHI ƒ^ƒCƒgƒ‹�i‰p�j�F EVALUATION OF ENERGY-BASED FACTOR OF SAFETY AGAINST LIQUEFACTION �´˜^�i‰p�j�F
The factor of safety against liquefaction of saturated soil is defined: F�¡ = �¡(�¡/�¡) where �¡ is the strain energy increament in the pore-water due to the plastic deformation of the skeleton and �¡ is the increament necessary to cause liquefaction. A pair of material constants, namely energy absorption ratio and dynamic internal friction angle, are introduced to express the strength of soil against liquefaction. A procedure is developed to evaluate F�¡ from strong motion parameters and is verified by the case study of the Wildlife Liquefaction Array. ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W