市街地避難訓練時の歩道及び歩道橋階段における引率下の保育園児年齢別歩行速度

摘要

This study aims to investigate the walking speed of children by age during an urban-scale tsunami evacuation drill of a nursery school, where 391 children were divided in ten groups and instructed to walk two abreast following the group's head conductor. Main results: average speed varies from 0.49 m/s (2+5 years together) to 1.29 m/s (5 years) in sidewalk, and from 0.19m/s (2+5 years together) to 0.60m/s (5 years) in overpass bridge stairs (measured in inclined plane); average speed tends to be determined by the group's head conductor speed; average speed in downstairs tends to be slower than in upstairs.%保育施設では、目的地に向けた自律的な歩行が困難な乳幼児を預ける施設であるため、大規模災害に伴う園児の広域避難が困難である。特に市街地では避難所要時間が必然的に長くなる可能性があり、避難時間を求めるには、園児の避難速度を把握することが不可欠である。