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


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

Seismic response evaluation of HP lattice shells with supporting substructures

< 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: Seismic response evaluation of HP lattice shells with supporting substructures
  • Author(s): Kazuya Nitta, Tomohiko Kumagai, Toshiyuki Ogawa
  • Keywords: HP lattice shell, supporting substructure, free vibration characteristics, seismic response behavior, seismic response evaluation
Abstract
A hyperbolic paraboloidal (HP) shell with straight edge lines is generated by translating a straight line with varying the tilt of line. The various shapes are created by the combinations of these HP shells. They are used on many places. Free vibration characteristics and seismic response behavior of the HP lattice shells which are constructed by steel frame are investigated by numerical analyses. In addition, the seismic response evaluation method for HP lattice shells based on the previous studies is proposed. From the results, in free vibration characteristics of HP lattice shells, the effective mass ratio of mode with shape of antisymmetric 1st wave increases according to an increase of the half open angles of members. The maximum response accelerations on the ridge line are represented by symmetric half wave in a horizontal direction and antisymmetric 1st wave in a vertical direction regardless of seismic waves.

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