ETFEフィルムを用いたばねストラット式張力膜構造の構造挙動に関する研究 : 二軸の材料特性と応力弛緩を考慮した数値解析手法の提案と妥当性の検証

概要

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An ETFE-film has the characteristics of weak strength, low rigidity and large creep strain. For these reason, most of membrane structures using ETFE-film are the air-cushion system. In the previous researches, the authors proposed the tensile membrane structure with a spring-strut system which is the applicable structural system considering the characteristic of ETFE-film. And focusing on physical properties called a crystallization of the ETFE-film, the authors had already confirmed the existence of the stable strain in the uniaxial tensile test. However, the examination by the biaxial tensile test has not been performed. From this point of view, this paper is constructed as follows; 1. Evaluate of a stable strain by the biaxial tensile test. 2. By the results of the biaxial tensile tests, a stress-strain model for the design is proposed. 3. Proposal of a numerical analysis method that consider material characteristics of ETFE-film. 4. Experimental study on structural behavior of the tensile membrane structures with a spring-strut system using ETFE-film. 5. Grasp of a structural behavior by long-term measurement of full-scale testing.
2011-03-25