広域避難の困難性からみた木造住宅密集地域整備事業の評価

摘要

本稿では，従来までは不燃領域率や延焼抵抗率といった市街地の空間性状の数値変化だけで評価されてきた木密事業を，広域避難シミュレーションモデルを用いて，広域避難困難性の観点から評価·検討することを試みた。%In high-density wooden residential areas, some aspects of spatial characteristics must be improved to safeguard against high risks which may occur in a major earthquake. However, improvements have not been steadily performed due to the lack of cost-benefit analysis on improvement projects. In this paper, we evaluated past improvement projects in terms of difficulty in wide-area evacuation by using a multi-agent simulation model Results showed that some buildings where residents have difficulty in evacuating have not been improved by these projects, and this risk can be reduced by shortening the street length which these buildings are adjacent to.