气肋式充气膜结构风荷载作用下结构特性分析及模型试验

Structural Behavior Analysis of Gas-Ribbed Inflatable Membrane Structure under Wind Load and Model Test

气肋式充气膜结构具有轻质、可移动、施工方便等优点,在临时会馆、机库等方面得到了广泛的应用。首先对气肋式充气膜结构的结构形式进行综述分析;随后以索笼绑带型气肋式充气膜结构为研究对象,建立共节点模型分析气肋直径、箍带数、内压对结构风荷载效应的影响,同时,通过在模型中删除索段的方法明确了各类索段的作用;最后进行了气肋加载试验,将试验结果和有限元计算结果进行了对比分析。

The gas-ribbed inflatable membrane structure has the advantages of light weight,mobility and convenient construction,and has been widely used in temporary pavilions and hangars.In this paper,the structural forms of gas-ribbed inflatable membrane structure are analyzed through a literature review.Then,taking strip-cage type structure as the research object,the common node model is established to analyze the influences of diameter,number of braces,and internal pressure on the wind load effect of the structure.At the same time,the effects of various cables are clarified by deleting them from the model.Finally,the loading test of the inflatable arch is carried out,and the test results are compared with the results of the finite element calculation.