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Choi, B.; Nishida, Akemi; Nakajima, Norihiro
Kozo Kogaku Rombunshu, B, 63B, p.325 - 333, 2017/03
The Japan Atomic Energy Agency promotes research and development of three-dimensional vibration simulation technologies for nuclear facilities. In this paper, we report a seismic response analysis of the Tohoku Pacific Coast Earthquake using three-dimensional models of the High-Temperature Engineering Test Reactor (HTTR) building. We conducted a sensitivity study using input parameters with uncertainty. Furthermore, we examined the variation of the seismic response results against the input parameters.
Choi, B.; Nishida, Akemi; Nakajima, Norihiro
Proceedings of 24th International Conference on Nuclear Engineering (ICONE-24) (DVD-ROM), 7 Pages, 2016/06
Research and development of three-dimensional vibration simulation technologies for nuclear facilities have been promoted in the Center for Computational Science and e-Systems of the Japan Atomic Energy Agency (JAEA). A seismic intensity of upper 5 was observed in the area of High-Temperature Engineering Test Reactor (HTTR) at the Oarai Research and Development Center of the JAEA during the 2011 Tohoku earthquake. In this paper, we report a parametric study of seismic response analyses of this earthquake using three-dimensional finite element models of the HTTR building with various uncertainty parameters (e.g. soil-structure interaction effects, soil properties). By examining the variation of the response result against the uncertainty parameters, we obtained a knowledge, which is essential for constructing a valid three-dimensional finite element model.
Nakano, Takafumi; Sato, Fuminori; Shirozu, Hidetomo; Nakanishi, Ryuji; Fukuda, Kazuhito; Tachibana, Ikuya
Nihon Genshiryoku Gakkai-Shi ATOMO
, 57(1), p.14 - 20, 2015/01
no abstracts in English
Fukuda, Kazuhito; Tomioka, Kenichiro*; Tachibana, Ikuya; Shirai, Nobutoshi; Kosaka, Ichiro; Nakano, Takafumi; Nagasato, Yoshihiko
no journal, ,
no abstracts in English
Nakano, Takafumi; Fukuda, Kazuhito; Sato, Fuminori; Kosaka, Ichiro; Nagasato, Yoshihiko
no journal, ,
no abstracts in English
Sato, Fuminori; Nakanishi, Ryuji; Kosaka, Ichiro; Nakano, Takafumi; Nagasato, Yoshihiko
no journal, ,
no abstracts in English
Koshino, Katsuhiko; Shirai, Nobutoshi; Sakaguchi, Shinobu; Shirozu, Hidetomo; Otaki, Miyuki*; Kosaka, Ichiro; Nakano, Takafumi; Nagasato, Yoshihiko; Tachibana, Ikuya
no journal, ,
no abstracts in English
Nakanishi, Ryuji; Sato, Fuminori; Kosaka, Ichiro; Nakano, Takafumi; Nagasato, Yoshihiko
no journal, ,
no abstracts in English
Choi, B.; Nishida, Akemi; Nakajima, Norihiro
no journal, ,
Research and development on three-dimensional vibration simulation technologies for nuclear facilities is one of the important challenge of the Center for Computational Science and e-Systems, Japan Atomic Energy Agency (JAEA). A seismic intensity of upper level 5 was observed in the High Temperature engineering Test Reactor (HTTR) at the Oarai Research and Development Center of JAEA, during the 2011 Tohoku earthquake. In this paper, we report the results of a parametric study for the seismic response analysis of the 2011 Tohoku earthquake using three-dimensional models of the HTTR building.
Choi, B.; Nishida, Akemi; Nakajima, Norihiro
no journal, ,
In this paper, in order to confirm the effect of input parameters for the three-dimensional model of nuclear reactor building, we performed a parametric study. The sensitivity analysis of floor response due to the difference in the setting of the main input parameters was carried out.
Choi, B.; Nishida, Akemi
no journal, ,
To validate analysis models against actual phenomena is an important issue in improving the reliability of the seismic safety evaluation. In this work, firstly, we analyze seismic observation records in the target Nuclear Power Plant (NPP) building. In order to validate three dimensional finite element models of the target plant, seismic response analyses using the same input waves as the records are conducted, and a Fourier amplitude ratio of the response acceleration on each floor is compared between the analysis and the observation. By introducing the Fourier amplitude ratio between different floors, the amplification of the response acceleration is quantified, and more detailed comparisons between the analysis results and the observation records are enabled. Through this comparison, it is confirmed that in the analysis results, the amplification of the response acceleration at the frequency ranges of 3-4 Hz (primarly mode) and 8-9 Hz (secondary mode) is consistent with the observation records.
Choi, B.; Nishida, Akemi; Nakajima, Norihiro
no journal, ,
Research and development of three-dimensional vibration simulation technologies for nuclear facilities is one mission of the Japan Atomic Energy Agency (JAEA). In this paper, we report a seismic response analysis of the 2011 off the Pacific coast of Tohoku Earthquake using three-dimensional models of the High-Temperature Engineering Test Reactor (HTTR) building. We performed a parametric study by using uncertainty parameters. Furthermore, we examined the variation in the response result for the uncertainty parameters to create a valid 3D finite element model.
