大火時強風の性状

概要

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The purpose of this study is to go give the analitical judgement of the relation between the conflagration and the dry strong wind by 14 examples. According to this study, it has been proved that the dry strong wind has important relation on the conflagration. The result of this study is shown follows: 1) There is no relation between the time when the dry strong wind beings to below and the time the conflagration breakes out. 2) In general, the time when the conflagration breakes out seems to be coincident with the time when the velocity is increasing or at its maximum and also the effective humilty is decreasing or at its minimum. 3) When dry strong winds direction changes, the wind velocity decreases and humilty increasing, then time for extinguishing the Fire becomes short. 4) Large scale conflagrations (more than 1000 houses burnt down) have been caused by unusual weathers (such as dry seasonal strong wind and Typhon including Foehn gust etc.). 5) Generally, velocity of these winds has from 5m/sec. to over 15m/sec, and continusly blew for more than 5 hours.
社団法人日本建築学会の論文
1957-03-25