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VolF11Šª
”NF 2002”N
•ÅF 775-780•Å
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ŒfÚŽGŽi‰pjF THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
’˜ŽÒi‰pjF Makoto Kamiyama, Tadashi Matsukawa, Keiichi Fukuchi
ƒ^ƒCƒgƒ‹i‰pjF NONLINEAR RESPONSE ANALYSIS OF GROUND BY PSEUDO-SPECTRAL METHOD
´˜^i‰pjF A new method for analyzing non-linear earthquake response of ground was developed using a one-dimensional pseudo-spectral method. It incorporates the non-linear relations between stress and strain into the time-domain calculations of earthquake motions. The method exactly follows the time variations of strains in terms of the time-varying rigidities and damping factors of soils, providing a quite different technique from conventional methods such as the equivalent linear method. We applied it to the down-hole records obtained at Port Island during the 1995 Hyogoken-Nanbu Earthquake to confirm its availability.
ƒL[ƒ[ƒhi‰pjF Soft ground, Earthquake response, Non-linear, Pseudo-spectral method, Equivalent linear method
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