著者

竹内 徹 堀内 健太郎 松井 良太 小河 利行 今村 晃

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.79, no.703, pp.1309-1319, 2014-09-30 (Released:2014-09-30)

参考文献数

16

被引用文献数

5 5

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Although truss towers used for telecommunication, electric power transportation, supporting structures for smokestacks in power plants have been designed against wind loads, a higher level of safety is recently required because of the increase of anticipated large seismic inputs. The ultimate strength of these structures is governed by tubular member buckling which is easily led to member fracture. This paper proposes the post-fracture analysis methods for truss structures composed with tubular members of large diameter-to-thickness ratios, and study on the collapse mechanism of such truss towers after the buckling and fracture of main columns and diagonals are investigated, using IDA analyses taking these member fractures into account.

著者

土方 勝一郎 成川 匡文 増田 増田 今村 晃 岸野 泰章 伊藤 隆文 柳下 文雄 富井 隆 小山 桂介

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.62, no.502, pp.39-46, 1997

参考文献数

21

被引用文献数

2 1 2

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The buildings of a thermal power plant are generally supported by a large number of piles. When conducting a dynamic analysis of such buildings, the dynamic interaction system of a pile groupshould be evaluated. In this paper, the interaction system is proposed for the responses of the thermal power plant buildings subjected to earthquake excitation. The system is based on the simplified methods currently proposed by the authors, for the impedances of a pile group. The results of the analysis show that the interaction system is practical for the dynamic analysis of a building supported on a large number of piles.

著者

土方 勝一郎 今村 晃 柳下 文雄 富井 隆 中井 正一 高橋 郁夫 吉田 一博 瀧 諭

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.61, no.480, pp.103-112, 1996

参考文献数

14

被引用文献数

1 1

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So-called extended sway-rocking model is frequently used in the design of embedded massive structures. When structures are embedded in soft surface layers, the model is apt to give larger shear force in the under-ground parts than the finite element method. In this paper, the authors have made clear through numerical survey using simplified models that this tendency can be attributed to the poor estimation of side wall impedance employed in the ordinary model. The authors have also proposed two modified models to evaluate the side wall impedance, and proved that the two models give more reasonable results than the ordinary sway-rocking model when foundations are embedded in soft surface strata.