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


IASS Symposium 2016

SESSION: Tension & Membrane Structures

Design and damping measurement for a framework membrane structure that combines cross arches and cables

< 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: Design and damping measurement for a framework membrane structure that combines cross arches and cables
  • Author(s): Katsuhiro Ootake, Osamu Hosozawa
  • Keywords: membrane, cables, steel, arches, damping factor, measurements, RD method, frequency initial tension
Abstract
A framework membrane structure has been designed combining cross arches formed from steel tubes, type B membrane material, and cables, as the roof over an indoor pool. In addition in order to determine the damping properties of the type B membrane material, microtremor measurements and artificial excitation measurements were carried out on the steel structure of the cross arches on their own before and after initial tensioning the membrane. Similar results were obtained for the measurements before initial tension of the membrane and the analysis, with a primary natural frequency of about 11.05 Hz. As a result of estimating the damping factor by the RD method[6], it was estimated that the damping factor was a maximum of 1.72 %. After initial tension of the membrane, the results showed that the estimated damping factor was a maximum of 4.85 % at the frequency 12.80 Hz.

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