Development of an evaluation method for impact resistant capacity of concrete filled tubelar members against tsunami flotsam collision

Akihiko Kawano, Hiromitsu Kawaguchi

Research output: Contribution to journalArticle

Abstract

In Tohoku earthquake (March 11, 2011), Tsunami flotsams attacked buildings and then caused terrible damage to many of them. For the purpose of preventing the damage, the authors have experimentally studied the loading capacity of concrete filled steel tubular (CFT) members subjected to lateral impacts, so that the CFT members are expected to have effective resistance to the impacts like the collision of flotsams. The purpose of this paper is to derive an evaluation method for the capacity of CFT members against lateral impacts by theoretical manner. The impact response analysis is performed by using a frame analysis program. From the numerical parametric study by using the analytical model, the lateral impact response of CFT member under the constant axial load has been clarified. Being based on the results and theoretical consideration, it is proposed an evaluation method of the allowable input energy by the lateral impact for a CFT member. The method takes both of the energy absorbing capacity of a CFT member and the potential energy release by the axis load into consideration.

Original languageEnglish
Pages (from-to)1497-1503
Number of pages7
JournalJournal of Structural and Construction Engineering
Volume80
Issue number715
DOIs
Publication statusPublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Architecture
  • Building and Construction

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