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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

Evaluation method of earthquake resistant capacity of double layer truss wall based on the dynamic collapse mechanism

< Table of Contents for Seismic Analysis, Behavior & Design
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Seismic Analysis, Behavior & Design
  • Pages: 7
  • Title: Evaluation method of earthquake resistant capacity of double layer truss wall based on the dynamic collapse mechanism
  • Author(s): Koichiro Ishikawa, Takenori Ito
  • Keywords: double layer partial cylindrical truss wall, dynamic collapse mechanism, member buckling, earthquake resistant capacity, dynamic elasto-plastic analysis, improving on ductility factor, deformation effects out of the plane
Abstract
This study deals with the dynamic elasto-plastic behavior considering a member buckling of double layer partial cylindrical steel truss walls. The study also focuses the dynamic collapse mechanism of the truss wall on the member buckling chain due to a compression stress. It is known in the double layer plate type truss wall that the member buckling chain induces the brittle collapse behavior of the structure soon after the member buckling occurs. The evaluation method is presented in the study that the partial cylindrical truss wall improves on the earthquake resistant capacity enough to avoid the sudden brittle dynamic collapse by the deformation effects of the radius direction. The estimation method of the maximum response of the horizontal displacement at the top of the wall is also proposed by the equivalent natural period and the earthquake response spectrum.

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