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


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

Topology optimization of supporting structures for seismic response reduction of spatial structures

< 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: 10
  • Title: Topology optimization of supporting structures for seismic response reduction of spatial structures
  • Author(s): Yuji Miyazu, Makoto Ohsaki, Seita Tsuda
  • Keywords: arch, latticed dome, flexible supporting structure, topology optimization, seismic response
Abstract
A flexible supporting structures reducing seismic responses of two types of spatial structures, an arch and a latticed dome, are proposed. The supporting structures of the arch and the latticed dome are modeled as two- and three-dimensional truss structures, respectively, and their topology and cross-sectional areas are optimized solving nonlinear programming problems. The optimization problem of the arch is divided into two small optimization problems to obtain the optimal solution efficiently. It is demonstrated through time-history response analysis that the flexible supporting structure can reduce the seismic response of the roof structures, and installing viscous dampers into the supporting structure is effective to further reduction of the responses.

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