| The in-depth contents | |
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| Publication year | 2025 |
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| Title | Research on the Required Internal Pressure Control of Cylinder- shaped Pneumatic Membrane Structures with Spherical Roofs Part 2 : Measurement of the Required Internal Pressure Using a large-scale pseudo wind tunnel apparatus |
| Author | Eizo Maruta (WIND & PHYSICS, LLC),Masaya Kawabata (Yokohama National University),Manabu Yamamoto (Kajima Technical Research Institute),Takeshi Ibi (DAIKA Industrial Co. Ltd.) |
| Summary |
In this study, a simplified calculation method based on the statics of the thin film structures was introduced regarding the internal pressure control necessary for deformation response to wind loads on cylindrical air membrane structures with spherical dome roofs. Additionally, a method for estimating the required internal pressure for original shape recovery and buckling avoidance, as well as the maximum tension, was proposed. Due to the difficulty of conducting experiments with actual objects, a large-scale pseudo wind tunnel apparatus was created by constructing a huge spherical pneumatic membrane structure dome model to obtain characteristics close to actual size and combining 12 blowers, and experiments were attempted in artificial wind created within it. To obtain the relationship between wind speed and required internal pressure, experiments were conducted using a simple measurement method called visual observation, which, although primitive method, enabled measurement of the internal pressure necessary for original shape recovery and buckling avoidance. The experiments showed a good correlation when compared with the simplified calculation method. |