Structural Performances Analysis Of Large Pneumatic Membrane Structure And Experiment On High-Strength Fabrics

The pneumatic membrane structure is a special membrane structure system. As a type of pneumatic membrane, the air supported membrane has been made outstanding contributions to the development of the large span space structures and the large air inflated membrane has also been applied and developed over the past few years in abroad. But the correlative researches and applications in this field had no been studied domestic. In addition, the high-properties fabric membranes are necessary to construct the large membrane structures, but these textiles still can not be produced in our country and their properties thus can not be research thoroughly either. In this paper, the analysis methods and basic performances of the pneumatic membrane structures were investigated, and the experimental studies of the high-performance (high-strength) fabrics were carried out either.Firstly, the numerical method and the correlated theory are introduced briefly for the pneumatic membrane structure involved in the software system Easy. The air arch is a basic structural component to realize the large span pneumatic membrane structure. The load carrying capacity and deformation are evaluated with analytical theory. Meanwhile, the numerical analyses are performed with EasyVol involved the comprehensive parametrical analysis such as the pressure, the rise, the length of the arch, the load size and the loading pattern etc. The experimental results are also evaluated and trade-off. Next, on the background of the central open of the Beijing national stadium"Bird Nest"in 2008, the basic structural performance are evaluated for the possible schematic idea, a large air supported membrane or air inflated...