掲載雑誌(和): 土木学会論文集 I 巻: -巻 号: 362/I-4号 頁: 177-187頁 年: 1985年 月: 10月 著者(和): 土気憲三,佐藤忠信,清野純史 タイトル(和): 微小地震記録に基づく設計地震動の合成 抄録(和):
本論文の目的は,微小地震記録を用いて設計用地震動を作成することである. 微小地震動をAR-MA過程で表現し, 多数の記録を統計的に処理して微小地震動の予測モデルを作成した. これを統計的Green関数と定義し, 断層面上で重ね合わせて設計用地震動を模擬した. この際, 応力降下量に着目した相似則を新たに提案した. そして, 応答スペクトルならびに最大加速度のアテニュエーション則によってこの模擬地震動の妥当性を評価した. キーワード(和): - 掲載雑誌(英): JOURNAL OF STRUCTURAL MECHANICS AND EARTHQUAKE ENGINEERING 著者(英): Kenzo TOKI,Tadanobu SATO,Junji KIYONO タイトル(英): SYNTHESIZING DESIGN GROUND MOTIONS FROM MICROEARTHQUAKE RECORDS 抄録(英):
We here report a method for synthesizing design earthquake motions at a short epicentral distance that makes use of microearthquake records. Characteristics such as the corner frequency and flat level were analyzed from displacementspectra determined from the digitized time histories of microearthquakes. A statistical model of microearth-quake motions then was construced by applying the nonstationary second-order autoregressive moving average (AR-MA) process. The attenuation laws of the AR-MA parameters were derived from a regression analysis. Awaveform that satisfied these attenuation laws was regarded as a statistical Green function. Strong earthquake motions were synthesized by superposing the statistical Green function. In order to make this superposition, a new scaling law was derived taking into account the difference of stress drop between large events and microearthquakes. Peak accelerations and response spectra of synthesized accelerograms in the region near the source were la キーワード(英): - 記事区分 投稿論文 区分     論文集