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Hayato ASADA学术报告(Stability Issue of Hollow Structural Section(HSS) Brace with One-lap Bolted Connections)

2017-10-12  点击:【】次

 

题目(Title):Stability Issue of Hollow Structural Section(HSS) Brace with One-lap Bolted Connections

 

报告人(Speaker): Hayato ASADA

 

Assistant Professor

Department of Architecture, Graduate School of Engineering, Kobe University, Japan

 

时间(Time): 10:00-11:00 a. m. Oct. 13 2017 (Fri.)

地点(Venue):威尼斯赌场第一会议室

主持(Chair):吴涛教授 Prof. Tao Wu

 

报告简介(Outline):

 

For simplicity, many engineers choose single-shear bolted joints for the end connections of hollow structural section (HSS) braces. When such connections are adopted, the braces may be susceptible to an undesirable buckling mode that involves formation of several plastic hinges within bracing connections. The concerned buckling mode was observed in a number of buildings after the 1995 Kobe earthquake and 2011 Tohoku earthquake, and led to fracture of the connection. Past studies by the authors have alarmed that deformation concentration in the connection results in substantially smaller compressive strength and energy dissipation capacity of the brace. Therefore, every care must be taken to avoid the buckling mode that causes deformation concentration at the bracing connections. This study proposes analysis models for this problem, derives buckling strength formulae, and verifies the formulae with loading tests and finite element analyses.

 

报告人简介(About the speaker):

 

Dr. Asada is an assistant professor of Department of Architecture at Kobe University from 2011. Prior to this, he was sponsored as a research fellow of Japan Society for the Promotion of Science (JSPS). He received Ph. D from Tokyo Institute of Technology. He is a member of several technical committees of professional organization including Architectural Institute of Japan (AIJ), Japan Concrete Institute (JCI) and Japanese Society of Steel Construction (JSSC). His research interests include experimental investigation of seismic behavior of steel and steel-concrete composite building structures, analysis of structural systems, and design of connections of steel structures. Currently, his research interests are centered in seismic assessment of existing steel frame systems and the stability performance of steel bracing including connections.

 

 

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