著者

引田 智樹 工藤 一嘉

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.66, no.546, pp.63-70, 2001

参考文献数

19

被引用文献数

3 2

---

The 1855 Ansei-Edo earthquake caused severe damage to Tokyo (Edo) metropolitan area. The damage was the next to that in the 1923 Kanto earthquake. In this study, source parameters of the 1855 Ansei-Edo earthquake were estimated by obtaining a good match between the simulated strong ground motions by the empirical Green's function method and the macroseismic data (isoseismal map). The hypocenter of the earthquake is most plausible near the border of Chiba and Ibaraki prefectures at a depth of 68km, near the upper surface of the Pacific plate. The magnitude of 7.4 is the best estimate for interpreting the macroseismic data.

著者

引田 智樹 内藤 幸雄 ニウシャ アリ 原田 公明

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.68, no.566, pp.37-44, 2003

被引用文献数

5 4

---

Estimation of the fixed-base dynamic characteristics of buildings using microtremor observation has difficulty when the upper input force, e.g. wind force and pressure on the underground wall, exists. In this study, an effective method for estimating the fixed-base transfer function of the buildings having large horizontal stiffness between soil and foundation is investigated considering the influence of the upper input force as bias errors. Those errors in the estimation depend on the model parameters and the upper input force parameters. For most cases, however, the dominant frequency of the obtained transfer function well approximates the natural frequency of the system without any influence of the upper input force.