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

IASS Symposium 2016

SESSION: Tension & Membrane Structures

Research on structural behavior of Tensairity dome

< 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: Research on structural behavior of Tensairity dome
  • Author(s): Zhenggang Cao, Zongshuai Wan
  • Keywords: membrane structures, Tensairity dome, finite element analysis, temperature effect, parametric analysis, combined airbags
Tensairity dome is a lightweight space structure composed of struts, cables and airbags inflated by low pressurized air. In this paper, two forms of Tensairity dome, two-way and spoke form, were designed and analysed. The zero-stress state, the inflated state and the load state were successively simulated. External loads obviously changes the air pressure inside the gasbag, and the effect of temperature on this structure is particularly intense. The static behavior of the structure was investigated for distributed load, asymmetric distributed load and wind load on the upper membrane. The results show that both two forms of structure have good static performance, and gasbag and cables can greatly improve the stability of the structure. On the basis of the spoke form, another type of Tensairity dome with two gasbags was designed and analysed. The results show that it has good mechanical properties, and the stability could meet code requirements.

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