This paper aims to illustrate the framework of analogical thoughts on large span buildings by contemporary Japanese architects. Firstly, we extracted the reference object, to which is compared large span building in analogical expression represented on the design theories. Addtionally, we examined what kinds of aspect were refered from these objects. Secondly, architects' intention of analogical expression was extracted from the articles and analyzed. Finally, the relationship between the reference aspect and the intention of analogical expression were examined totally.

In the design of large span buildings, it is important to create the relationship to the surrounding environment. This report aims to illustrate how Japanese architects thought on the relationship between the surroundings and large span buildings, based on a study of such work as it appeared in architectural publications. Firstly, we extracted the architect's intention from the text by the architects themselves. Secondly, the actual composition of the roof and its supporting structure was examined, we recognize it as the representation of the relationship between the ground and large span buildings. Finally, the mediation of the architect's intention and the actual composition were considered.