拱形充气结构承载特性分析

Bearing Characteristics Analysis of the Arched Inflatable Structure

为了验证充气结构的承载特性,进行了气肋模块荷载试验,得到了同一模块在不同内压下的承载极限以及拱顶高度的变化量,内压为5kPa时,气肋模块最大可承重1 760kg。建立了充气机库的三维模型,并用FLUENT计算了不同迎风角下,机库表面风压分布,得到在迎风角为60°时,为机库最易坍塌,并将表面风压导入ABAQUS中分析机库应力分布,结果表明,机库在10级风下仍能运行良好。

In order to explore the mechanics characteristics of inflatable structure, the gas-rib module load test was carried out, the bearing limit and the variation of the dome height in the same module under different internal pressures were obtained. When the internal pressure was 5 kPa, gas-rib module could carry a maximum of 1 760 kg. The 3D model of inflatable hangar was established, wind pressure distribution on the hangar surface was calculated with FLUENT. Results shows that the hangar was most easily collapsible when the windward angle was 60°, import the surface wind pressure into ABAQUS analyzer. Distribution of stress shows that the hangar meets the requirements under the wind of level ten.