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IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: General 10: ETFE - Design and Experiments

Experimental study of ETFE cushion-inflated form-developing through flat-patterning

< Table of Contents for General 10: ETFE - Design and Experiments
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: General 10: ETFE - Design and Experiments
  • Title: Experimental study of ETFE cushion-inflated form-developing through flat-patterning
  • Author(s): Wujun CHEN, Bing ZHAO, Hao SONG, Jing CAI
  • Keywords: ETFE cushion, flat-patterning, form-developing, creep, creep-recovery, photogrammetry
Abstract
ETFE membrane structure has become more popular because of its advantages of transparent, lightweight, durability, especially in the form of cushion-inflated due to rather low strength. Compared with the classic way, flat-patterning way is proposed to be the other way to determine ETFE form. An experiment set-up system was developed, which mainly consisted of ETFE cushion structure model, pressure control system and measurement system. The ETFE cushion is 2.5 m side triangle. The measurement system includes untouched photogrammetry and laser displacement sensor. The test procedure mainly experiences three phases, ETFE cushion formdeveloping, creep and creep-recovery. The inflation pressure, inflation rate, lasting time, deflation time and final pressure were tested thoroughly with the ETFE cushion rise and surface geometry surveyed precisely, as validate the design methodology. The experimental results demonstrated the applicability of flat-pattern of ETFE cushion and unveiled more ETFE properties, structural behavior and analysis theory need studying furtherly.

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