3 0 0 0 OA 積層ゴムのハードニング特性を考慮した免震構造の安全余裕度評価
- 著者
- 井澤 保一 小林 正人
- 出版者
- 一般社団法人 日本建築学会
- 雑誌
- 日本建築学会技術報告集 (ISSN:13419463)
- 巻号頁・発行日
- vol.28, no.68, pp.91-96, 2022-02-20 (Released:2022-02-20)
- 参考文献数
- 9
In this paper, the safety margin of seismically isolated buildings (SIBs) is probabilistically evaluated using Incremental Dynamic Analysis (IDA), and the effect of laminated rubber bearing’s hardening characteristics on the safety margin of SIBs is also verified quantitatively. As a result, since the non-consideration of hardening characteristics overestimates the safety margin, it is important to consider the hardening characteristics in the evaluation of superstructure’s safety margin. Also, tendency of the safety margin probabilistically evaluated by IDA under numbers of actual ground motions is showing high consistency with tendency of that under general design ground motions.
3 0 0 0 OA 地震動入力レベルに対する冗長性を考慮した免震構造の耐震安全性評価法の提案
- 著者
- 井澤 保一 小林 正人
- 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.88, no.807, pp.746-757, 2023-05-01 (Released:2023-05-01)
- 参考文献数
- 20
- 被引用文献数
- 1
The occurrence of earthquake ground motions exceeding the assumed design level may lead to plasticization of the superstructure of seismically isolated buildings. It is known that the plasticization of the superstructure is accompanied by a rapid development of deformation (quasi-brittle). In this paper, the relationship between the Ds value and the ductility factor is determined using incremental dynamic analysis, and the nature of quasi-brittle is quantified by formulating this relationship. Furthermore, seismic safety evaluation method for the limit state of seismic isolation layer and superstructure in seismically isolated buildings is proposed using this relationship.