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


IASS Symposium 2016

SESSION: Metal Spatial Structures

Seismic Response Evaluation of Lattice Shell Roofs Using Seismically Isolated Bearings

< Table of Contents for Metal Spatial Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Metal Spatial Structures
  • Pages: 8
  • Title: Seismic Response Evaluation of Lattice Shell Roofs Using Seismically Isolated Bearings
  • Author(s): Toru Takeuchi, Takashi Miyazaki, Toshiyuki Ogawa
  • Keywords: cylindrical lattice shell, seismic isolation, equivalent linear method, response evaluation, response spectrum analysis
Abstract
Seismic isolation bearings are known to be effective at reducing the seismic response of latticed shell roofs. Although simple response evaluation methods have been proposed, they are limited to the condition that the elastic stiffness of the isolated layer is much lower than that of the supporting substructure, or that the weight of the substructure is relatively light. In this paper, simple seismic response evaluation methods for cylindrical lattice shell roofs are presented for the transverse as well as the longitudinal directions. In addition, methods are proposed for seismically isolated roof structures including isolated bearings with high initial stiffness and heavy substructures. Friction pendulum bearings are assumed for isolated bearings, and two different analytical models are compared for evaluating the response.

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