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Vol. 48 (2007) No. 3 December n. 155


Seismic Response Evaluation of Lattice Shell Roofs Using Amplification Factors

< Table of Contents for Vol. 48 (2007) No. 3 December n. 155
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 48 (2007) No. 3 December n. 155
  • Pages: 197-210
  • Title: Seismic Response Evaluation of Lattice Shell Roofs Using Amplification Factors
  • Author(s): T. Takeuchi, T. Ogawa and T. Kumagai
  • Keywords: Seismic Response, Arch, Lattice Dome, Cylindrical Lattice Shell, Equivalent Static Loads
Abstract
Seismic response of lattice shell roofs with substructures is complicated, because these roofs have large numbers of parallel vibration modes, and their amplitude changes drastically along the rise/span ratios and the stiffness ratios between domes and substructures. Under limited condition, however, their response characteristics are considered to become relatively simple. In this paper, simple response evaluation method of domes and cylindrical shell roofs with substructures are proposed using response amplification factors approach. Firstly, the response characteristics of raised roofs with various depth/span ratios and substructure stiffness are numerically discussed with simple arch model. Then response of lattice domes and cylindrical shell roofs are investigated, and simple acceleration response evaluation method using response amplification factors is delivered. The proposed method can be used as equivalent static loads for design, and compared with precise analyses with CQC method.

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