Air-Inflated Rib Membrane Structure and Its Applications
Air-inflated rib membrane structure is a kind of structure or component using high-pressure air-inflated ribs as support system,which can create space by connecting multiple air-inflated ribs.It has the advantages of lightweight and portable,fast transportation,low energy consumption,safety and reliability.In order to create the structure with large span and strong load-bearing capacity,the scholars at home and abroad have conducted thorough researches on this issue,and the air-inflated rib membrane structures have been widely used and developed,which have become symbolic buildings in many cities at home and abroad.Firstly,the structural form of the air-inflated rib membrane structure,and the function and design requirements of internal pressure were summarized in this paper.The internal pressure in engineering applications was described briefly,the methods of monitoring the performance and the studies of failure performance were outlined.Then,a summary of examples of the air-inflated rib membrane structure used in engineering projects was concluded.This structural form has been widely used in exhibition halls,sports venues,laboratories,aircraft hangars,warehouses and other practical engineering projects.In large-span air-inflated structures,the trip-cage type air-inflated rib membrane structure provides an effective method for connecting multiple air-ribs.The strip connection type can greatly improve the bearing capacity of a single air-inflated rib and the cooperative working ability between air-inflated ribs.The structural characteristics and engineering applications of large aircraft hangars built by BUILDAIR Company using the strip-cage type air-inflated rib membrane structure were emphatically introduced.Finally,the relationship between the diameter of the air-inflated rib and the span of the structure in engineering applications was investigated.The result shows that the ratio between the diameter of the air-inflated rib and the span of the structure is about 1/10 in most of the strip-cage type air-inflated rib membrane structure engineering cases.However,the selection of the diameter needs to be determined by design analysis according to the actual engineering conditions.
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