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Nishida, Akemi; Kang, Z.; Tsubota, Haruji
no journal, ,
Many researches have been performed for evaluating local damage to reinforced concrete (RC) structures caused by perpendicular impacts of rigid projectiles. Up to now, few impact tests oblique to the target structures have been carried out. This study has been conducted with the purpose of proposing a new formula for evaluating the local damage caused by oblique impacts based on previous experimental and simulation results. In this paper, the results of simulation analyses for evaluating the local damage to a RC panel subjected to normal and oblique impacts by missiles, by using the analytical method that was validated using the results of previous impact experiments. Based on the results of these numerical analyses, the effects of the rigidity of the missile as well as the impact angle on the local damage to the target structures are clarified.
Choi, B.; Nishida, Akemi; Shiomi, Tadahiko; Muramatsu, Ken*; Takada, Tsuyoshi*
no journal, ,
no abstracts in English
Kirita, Fumio; Uryu, Mitsuru; Yamazaki, Toshihiko
no journal, ,
no abstracts in English
Nishida, Akemi
no journal, ,
In this panel discussion, measures to reduce impact loads and responses and considerations for rational evaluation will be discussed assuming impact effects occurring in buildings due to collisions and explosions associated with accidental accidents. In this presentation, modeling and analytical methods to evaluate the effects of direct impact force due to explosion and collision, structural impact response, destruction phenomenon, and collision action such as secondary scattering objects caused by them are presented. In addition, recent detailed analytical examples will be introduced.
Yamamoto, Tomohiko; Watakabe, Tomoyoshi; Miyagawa, Takayuki*; Okamura, Shigeki*; Fukasawa, Tsuyoshi*; Fujita, Satoshi*
no journal, ,
This report describes that the concepts and specifications of "3-dimensional seismic isolation device" adopting in a Sodium-cooled fast reactor, summary of various tests and analyzes, and shows feasibility of 3-dimensional seismic isolation device for earthquake response reduction effect.
Ueno, Kazuki*; Suzuki, Hiroshi; Koyama, Taku*; Sekine, Mariko*; Nishio, Yuhei*; Kanematsu, Manabu*
no journal, ,
no abstracts in English
Suzuki, Hiroshi; Satake, Kosuke*; Kusunoki, Koichi*; Kanematsu, Manabu*; Mukai, Tomohisa*
no journal, ,
no abstracts in English
Sekine, Mariko*; Suzuki, Hiroshi; Koyama, Taku*; Ueno, Kazuki*; Nishio, Yuhei*; Kanematsu, Manabu*
no journal, ,
no abstracts in English