掲載雑誌（和）： 日本地震工学シンポジウム論文集 Vol： 8-2巻 年： 1990年 頁： 1545-1550頁 著者（和）： - タイトル（和）： - 抄録（和）：
- キーワード（和）： - 掲載雑誌（英）： PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM 著者（英）： Wu ZAIGUANG, Lin Gae, Hah GUOCHENG タイトル（英）： NONSTATIONARY STOCHASTIC SEISMIC RESPONSE ANALYSIS OF EFFECTIVE STRESS IN SOIL LAYERS 抄録（英）：
In this paper, a new analysis method is presented for evaluating the nonstationary random seismic responses of effective stresses in soil layers. It is based on the time domain model analysis technique for determining the nonstationary responses of linear system and the equivalent linear procedure for computing stationary response of nonlinear soil structures. In the method, the raising course of pore water pressure during earthquake is simulated as a accumulated failure process under a stochastic loading. Both total stress analysis and effective stress analysis are conducted for a severe liquefied soil layer during Niigata Earthquake. The calculation results show that the stationary response analysis can not be used to predict the free vibration attenuation, and therefore, assessed degree of failure is on the low side. On the contrary, in the total stress nonstationary response analysis, the effects of pore water pressure on the dynamic shear modulus can not be taken into consideration, and estimated responses of soil layers are on the high side. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集