群集通過時の防火エア・シャッタのしゃ断特性

抄録

It is measured by model experiment that the disturbed state of the air shutter for fire prevention influenced by passing crowds and the state of smoke drawn by crowds into the safety zone.
In experiment, the flowing way of smoke is coincided with the expansile direction.
The results are as follows.
(1) The larger the value of the push-pull flow ratio, Q₃ /Q₁, the less the length of smoke drawn by dolls into the safety zone and also the recovery time.
(2) The changes of the value of the side flow-doll velocity ratio influence on the values of the recovery ratio which are expressed by
(Q₃ /Q₁) recovery I / (Q₃ /Q₁) limit
(3) The kinds of patterns of dolls influence on the values of the recovery ratio.
(4) If the values of Q₃ /Q₁ increase, the values of Q_s also increase and the values of v_s do, and this means that they act effectively in accordance with the increase of the values of v_s.
(5) When side flow volume, Q₀, is constant, the values of the recovery ratio in the case of uniform side velocity distribution have also the same values with the cases of varied ones which have large at ceiling parts and small at floor parts.
(6) The safety rates influenced by passing crowds are obtained.