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

IASS Symposium 2016

SESSION: Tension & Membrane Structures

Dynamic analysis of a tensioned bamboo roof

< Table of Contents for Tension & Membrane Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Tension & Membrane Structures
  • Pages: 10
  • Title: Dynamic analysis of a tensioned bamboo roof
  • Author(s): Reyolando Brasil, Marcia Yamamoto Sato
  • Keywords: nonlinear dynamics, bamboo, roofs, wind, random vibrations
We present a nonlinear random time domain analysis of a 3D hyperbolic paraboloid tensioned latticed bamboo roof. Fluid-structure interaction forces are divided in one concerning average wind velocity, another related to fluctuation around average, of random nature. The computer program solves vector equations of motion via the Central Difference Method. Masses and damping are considered lumped. We compute large displacements and restoring forces at each time step, using an appropriate bamboo stress-strain relationship. We simulate wind by superposition of harmonic loads with randomly set phase angles and amplitudes taken from Davenport PSD bands. The results are a large series of displacements and member tractions for determining characteristic design values, using Gumbel probability density function. This is a Monte Carlo type simulation.

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