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About
Dr. Yoshikai is one of leading structural engineers of Kajima Corporation. He is serving as Deputy Manager of the Architectural Design Division and also serving as a Board of Directors for Architectural Institute of Japan and active member of structural engineering committees and associations. Dr. Yoshikai played a key role in developing the Kajima Cut and Take Down Method to safely demolish a high rise building from the bottom up. He received a doctor’s degree from Chiba University through his studies for the design methods for steel structures to prevent early rupture around welding areas.
CTBUH Roles
Working Group: Demolition (2014 – Present)
CTBUH Initiatives
First CTBUH Demolition Working Group Meeting
05 November 2014
Research
01 November 2011
A New Demolition Method for Tall Buildings. Kajima Cut & Take Down Method
Ryo Mizutani & Shigeru Yoshikai, Kajima Corporation
“Using conventional demolition methods, ten different materials could have been recycled on the job site, returning a recycling rate of 55%.The C&TD method allowed recycling...
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Research
10 October 2004
Analytical Study of High-rise Steel Buildings in Case of Loss of Columns
Masamichi Sasaki, Sumitomo Metal Industries; Michio Keii, Nikken Sekkei; Shigeru Yoshikai, Kajima Corporation; Hisaya Kamura, JFE R&D Corporation
This paper presents an analytical investigation into the effect on the redundancy of steel frame structures exerted by the loss of vertical structural members destroyed...
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Research
20 October 2003
R. Fakuda, E. Fukuzawa, Norihide Koshika, H. Morikawa & et al, Kajima Corporation
The September 11, 2001, attacks on WTC1 and 2 caused extensive structural and local damages at the points directly hit by aircrafts. Despite massive local...
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CTBUH Initiatives
5 November 2014
First CTBUH Demolition Working Group Meeting
The first meeting of the CTBUH Tall Buildings Demolition Working Group discussed an entire spectrum of possibilities for demolition.
Research
01 November 2011
A New Demolition Method for Tall Buildings. Kajima Cut & Take Down Method
Ryo Mizutani & Shigeru Yoshikai, Kajima Corporation
“Using conventional demolition methods, ten different materials could have been recycled on the job site, returning a recycling rate of 55%.The C&TD method allowed recycling...
10 October 2004
Analytical Study of High-rise Steel Buildings in Case of Loss of Columns
Masamichi Sasaki, Sumitomo Metal Industries; Michio Keii, Nikken Sekkei; Shigeru Yoshikai, Kajima Corporation; Hisaya Kamura, JFE R&D Corporation
This paper presents an analytical investigation into the effect on the redundancy of steel frame structures exerted by the loss of vertical structural members destroyed...
20 October 2003
R. Fakuda, E. Fukuzawa, Norihide Koshika, H. Morikawa & et al, Kajima Corporation
The September 11, 2001, attacks on WTC1 and 2 caused extensive structural and local damages at the points directly hit by aircrafts. Despite massive local...
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