Reuse System of Building Steel Structures

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The reuse system mentioned in this paper is an overall system for realizing a reuse business in a series of cyclic process in a reuse flow, namely, design, fabrication, construction, maintenance, dismantling, and storage. Here, we take up Rolled H-section steels. It is easy to handle them as reusable members because of manufactured in accordance with Japanese Industrial Standard. Structural members obtained by a reuse dismantling are evaluated by dimensional inspection, mechanical property test, chemical component test, and degradation test and stock diagnosis of reusable members of building steel structures based on performance evaluation is considered. Then, the estimation method of CO_2 emission according to circulation of reuse flow and CO_2 emission intensities based on its method are shown. A trial calculation of CO_2 emission in the reuse flow using mid-rise steel frame building model is conducted. Finally we propose guideline of reusable members of building steel structures based on performance evaluation and evaluate it, applying reusable members obtained by reuse dismantling of low storied steel structure to sustainable structure in fabrication and erection test.