Tomohiko Kumagai
Meiji University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Tomohiko Kumagai.
Journal of Structural and Construction Engineering (transactions of Aij) | 2009
Tomohiko Kumagai; Toru Takeuchi; Fumi Ushiwata; Hiroko Seta; Toshiyuki Ogawa
1/8 � 1��������������������������� ��� � � 2 ��������������������������� ��� � � 3�������������������������� � 4��������������������������� �� � ������������������������������ ������������������������������ ������������������������������ ������������������������������ ������������������������������ ������������������������������ ������������ 1) ������������������ ������������������������������ ����������������� 1)-18) ����������� ������������������������������ ������������������������������ ������������������� 1)-3) ���������� ����������������������� 4)-12) ����� ������������������������������ ������������������������������ ���������������� ������������������������������ ��������������� 4) �������������� ������������������������������ ��������������������������� 5) �� ����������MTMD����������������� ���������������������� ������������������������������ ������������������������������ ������� 6) ���������������������� ������������������������������� 7)
Journal of Structural and Construction Engineering (transactions of Aij) | 2008
Toru Takeuchi; Tomohiko Kumagai; Shunsuke Okayama; Toshiyuki Ogawa
Seismic response of raised domes with substructures are known to be very complicate, because of the roof having large numbers of parallel vibration modes, and their amplitude changing drastically along the relationship between domes and substructures. The authors have proposed simple method for estimating the response of such domes with amplification factors, however, they do not cover high-rise domes. In this paper, simple response evaluation method of lattice domes with high-rise proportions supported by various stiffness of substructures is proposed using continuous approach as the previous studies, and their validities are discussed against response spectrum analyses with CQC method.
Journal of Structural and Construction Engineering (transactions of Aij) | 2008
Tomohiko Kumagai; Toru Takeuchi; Izumi Suzuki; Toshiyuki Ogawa
Seismic response of cylindrical lattice shell roofs with supporting substructures is known to be amplified in vertical direction even under horizontal input, and their amplitude changes along the direction of earthquake motion. However, the seismic response behavior under the inputs in arbitrary direction has not been sufficiently investigated. In this paper, seismic vibration tests are carried out using small scale models with supporting substructure in order to make clear the effects of difference of input direction and relationship between mechanical properties of roofs and substructures on response behavior of shell roofs. It is confirmed that the simple response evaluation methods proposed in previous papers apply to the responses subjected to earthquake motions with arbitrary direction.
Journal of Structural and Construction Engineering (transactions of Aij) | 2004
Toru Takeuchi; Toshiyuki Ogawa; Mika Nakagawa; Tomohiko Kumagai
Journal- International Association for Shell and Spatial Structures | 2003
Tomohiko Kumagai; Toshiyuki Ogawa
Journal- International Association for Shell and Spatial Structures | 2005
Toshiyuki Ogawa; Makoto Ohsaki; Tomoshi Miyamura; Tomohiko Kumagai
Symposium of the International Association for Shell and Spatial Structures (50th. 2009. Valencia). Evolution and Trends in Design, Analysis and Construction of Shell and Spatial Structures : Proceedings | 2009
Kengo Takamatsu; Toru Takeuchi; Tomohiko Kumagai; Toshiyuki Ogawa
Journal of Structural and Construction Engineering (transactions of Aij) | 2012
Toshiyuki Ogawa; Tomohiko Kumagai; Yuta Kurokawa; Koji Tabuchi; Masanao Nakayama; Keiji Masuda
Journal of Structural and Construction Engineering (transactions of Aij) | 2010
Toru Takeuchi; Yuki Tsutsumi; Tomohiko Kumagai; Toshiyuki Ogawa
Symposium of the International Association for Shell and Spatial Structures (50th. 2009. Valencia). Evolution and Trends in Design, Analysis and Construction of Shell and Spatial Structures : Proceedings | 2009
Toru Takeuchi; Toshiyuki Ogawa; Tomohiko Kumagai