Topology optimization of supporting structure for seismic response reduction of an arch

• Miyazu, Yuji

• Ohsaki, Makoto

• Tsuda, Seita

Abstract

A flexible supporting structure that reduces seismic response of an arch is proposed. Topology and cross-sectional areas of the supporting structure modeled as a truss structure are optimized through two steps of static and dynamic optimization problems. In the first step, a flexible supporting structure that has diagonal displacement at the top under horizontal load is obtained by solving static optimization problems. Then, in the second step, the cross-sectional area of the flexible member is optimized to minimize the seismic response acceleration of the arch evaluated by the complete quadratic combination (CQC) method. Time-history seismic response analysis is carried out to show that the response in the normal direction of the roof successfully decreases due to flexibility of the supporting structure; in addition, installing passive energy dissipation devices into the flexible supporting structure is very effective in reducing the tangential response of the arch.

Journal

• Science China Technological Sciences

  Science China Technological Sciences 59 (6), 852-861, 2016-06-01

  Springer Nature

Keywords

• topology optimization
• arch
• supporting structure
• truss
• nonlinear programming problem
• CQC method

Details

• CRID: 1050845760768500224
• NII Article ID: 120005860033
• ISSN: 16747321
• HANDLE: 2433/217226
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles