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Journal Articles

Analytical study for low ground contact ratio of buildings due to the basemat uplift using a three-dimensional finite element model

Choi, B.; Nishida, Akemi; Shiomi, Tadahiko; Kawata, Manabu; Li, Y.; Ota, Akira*; Sonobe, Hideaki*; Ino, Susumu*; Ugata, Takeshi*

Mechanical Engineering Journal (Internet), 10(4), p.23-00026_1 - 23-00026_11, 2023/08

In the seismic evaluation of nuclear facility buildings, basemat uplift-the phenomenon during which the bottom of the basemat of a building partially rises from the ground owing to overturning moments during earthquakes-is a very important aspect because it affects not only structural strength and integrity, but also the response of equipment installed in the building. However, there are not enough analytical studies on the behavior of buildings with a low ground contact ratio due to basemat uplift during earthquakes. In this study, we conducted a simulation using a three-dimensional finite element model from past experiments on basemat uplift; further, we confirmed the validity of this approach. In order to confirm the difference in the analytical results depending on the analysis code, the simulation was performed under the same analytical conditions using the three analysis codes, which are E-FrontISTR, FINAS/STAR and TDAPIII, and the obtained analysis results were compared. Accordingly, we investigated the influence of the difference in adhesion on the structural response at low ground contact ratio. In addition, we confirmed the effects of significant analysis parameters on the structural response via sensitivity analysis. In this paper, we report the analytical results and insights obtained from these investigations.

Journal Articles

Summary of safety research on the geological disposal of HLW in JAEA; 2001-2005

Umeki, Hiroyuki; Osawa, Hideaki; Sonobe, Hitoshi; Miyamoto, Yoichi

Dai-5-Kai Anzen Kenkyu Seika Hokokukai Koenrokushu; Hoshasei Haikibutsu No Chiso Shobun Ni Tsuite, p.5 - 29, 2006/03

no abstracts in English

Oral presentation

Study for low ground contact ratio of buildings due to the basemat uplift using a three-dimensional finite element analysis, 1; Outline and verification of basemat uplift analysis function

Choi, B.; Nishida, Akemi; Kawata, Manabu; Shiomi, Tadahiko; Ota, Akira*; Sonobe, Hideaki*; Ino, Susumu*

no journal, , 

no abstracts in English

Oral presentation

Study for low ground contact ratio of buildings due to the basemat uplift using a three-dimensional finite element analysis, 2; Reproduction Analysis of Experiment No.1

Ota, Akira*; Sonobe, Hideaki*; Ino, Susumu*; Choi, B.; Nishida, Akemi; Kawata, Manabu; Shiomi, Tadahiko

no journal, , 

no abstracts in English

Oral presentation

Study for low ground contact ratio of buildings due to the basemat uplift using a three-dimensional finite element analysis, 3; Reproduction Analysis of Experiment No.2

Sonobe, Hideaki*; Ota, Akira*; Ino, Susumu*; Choi, B.; Nishida, Akemi; Kawata, Manabu; Shiomi, Tadahiko

no journal, , 

no abstracts in English

Oral presentation

Study for low ground contact ratio of buildings due to the basemat uplift using a three-dimensional finite element analysis, 4; Induced vertical vibration under low contact ratio

Shiomi, Tadahiko; Nishida, Akemi; Kawata, Manabu; Choi, B.; Ota, Akira*; Sonobe, Hideaki*; Ino, Susumu*

no journal, , 

no abstracts in English

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