Evacuation assistants are expected to spread the escape route information and lead evacuees toward the exit as quickly as possible. Their leading behavior influences the evacuees＇ movement directly, which is confirme...Evacuation assistants are expected to spread the escape route information and lead evacuees toward the exit as quickly as possible. Their leading behavior influences the evacuees＇ movement directly, which is confirmed to be a decisive factor of the evacuation efficiency. The transmission process of escape information and its function on the evacuees＇ movement are accurately presented by the proposed extended dynamic communication field model. For evacuation assistants and eevacuees, their sensitivity parameter of static floor field（SFF）, kL S, and kS, are fully discussed. The simulation results e indicate that the appropriate kL Sis associated with the maximum kSof evacuees. The optimal combinations of kL Sand e kSwere found to reach the highest evacuation efficiency. There also exists an optimal value for evacuation assistants＇ information transmission radius.展开更多
Pedestrian safety evacuation in aircraft cabins has been a challenging problem because of the aircraft’s unique characteristics,such as the diversity of passengers and the restricted evacuation environment.It is diff...Pedestrian safety evacuation in aircraft cabins has been a challenging problem because of the aircraft’s unique characteristics,such as the diversity of passengers and the restricted evacuation environment.It is difficult to reproduce evacuation activities in aircraft cabin due to safety concerns and cost constraints.To fill this gap,an improved cellular automaton model of crowd evacuation for aircraft cabin is established by incorporating the characteristics of cabin space structures and passenger attributes.Passengers are divided into healthy individual passengers and disabled-healthy group passengers,whose movement mechanisms are quantified.Based on the constructed model,simulation experiments are conducted using the configuration cabin layout of B737-800 as an example.The results show that the evacuation time is prolonged with increased passenger density and the number of disabled passengers.Moreover,the overall evacuation time is insignificantly affected by whether disabled-healthy group passengers’seats are close to the aisle or window,and the evacuation efficiency is best when their seats are evenly distributed in the cabin.The evacuation time is the shortest when all cabin doors are open,and pedestrians are evacuated the slowest when the central emergency doors are closed.This study pro-vides valuable insights into effective strategies for pedestrian evacuation and crowd emergency management of civil aircraft.展开更多
基金Project supported by the National Basic Research Program of China(Grant No.2011CB706900)the National Natural Science Foundation of China(Grant Nos.71225007 and 71203006)+2 种基金the National Key Technology Research and Development Program of the Ministry of Science and Technology of China(Grant No.2012BAK13B06)the Humanities and Social Sciences Project of the Ministry of Education of China(Grant Nos.10YJA630221 and 12YJCZH023)the Beijing Philosophy and Social Sciences Planning Project of the Twelfth Five-Year Plan,China(Grant Nos.12JGC090 and 12JGC098)
文摘Evacuation assistants are expected to spread the escape route information and lead evacuees toward the exit as quickly as possible. Their leading behavior influences the evacuees＇ movement directly, which is confirmed to be a decisive factor of the evacuation efficiency. The transmission process of escape information and its function on the evacuees＇ movement are accurately presented by the proposed extended dynamic communication field model. For evacuation assistants and eevacuees, their sensitivity parameter of static floor field（SFF）, kL S, and kS, are fully discussed. The simulation results e indicate that the appropriate kL Sis associated with the maximum kSof evacuees. The optimal combinations of kL Sand e kSwere found to reach the highest evacuation efficiency. There also exists an optimal value for evacuation assistants＇ information transmission radius.
基金supported by Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province(MZ2022KF07)the National Natural Science Foundation of China(Grant No22042333)the Fundamental Research Funds for the Central Universities(2021III053JC,2021III052JC).
文摘Pedestrian safety evacuation in aircraft cabins has been a challenging problem because of the aircraft’s unique characteristics,such as the diversity of passengers and the restricted evacuation environment.It is difficult to reproduce evacuation activities in aircraft cabin due to safety concerns and cost constraints.To fill this gap,an improved cellular automaton model of crowd evacuation for aircraft cabin is established by incorporating the characteristics of cabin space structures and passenger attributes.Passengers are divided into healthy individual passengers and disabled-healthy group passengers,whose movement mechanisms are quantified.Based on the constructed model,simulation experiments are conducted using the configuration cabin layout of B737-800 as an example.The results show that the evacuation time is prolonged with increased passenger density and the number of disabled passengers.Moreover,the overall evacuation time is insignificantly affected by whether disabled-healthy group passengers’seats are close to the aisle or window,and the evacuation efficiency is best when their seats are evenly distributed in the cabin.The evacuation time is the shortest when all cabin doors are open,and pedestrians are evacuated the slowest when the central emergency doors are closed.This study pro-vides valuable insights into effective strategies for pedestrian evacuation and crowd emergency management of civil aircraft.
