Pressurized buildings have emerged as a novel architectural solution to alleviate altitude illness in high-altitude regions.Unlike conventional buildings,evacuation from this kind of building has to experience a depre...Pressurized buildings have emerged as a novel architectural solution to alleviate altitude illness in high-altitude regions.Unlike conventional buildings,evacuation from this kind of building has to experience a depressurization time,which results in air expansion and heat absorption,creating a dense fog and impairing sight within the buildings.Evacuation experiments were performed in a pressurized oxygen-supplement compartment to investigate the pedestrian motion properties.Based on the questionnaires,participants reported varying degrees of symptoms such as ear blockage,reduced environmental noise,and dizziness,which had a measurable impact on their mobility.We focus on the evacuation parameters through three basic building components:staircases,pressure transition cabins,and escape windows.As the visibility in the compartment decreases from high to low,the movement patterns of pedestrian shift from triangular to single-file with a significant decline in evacuation efficiency.It is found that there is a linear relationship between evacuation time and the number of evacuees through escape windows.The pressure transition cabin is a crucial evacuation route in emergencies,and evacuation time is recommended as the key metric for assessing its effectiveness.These findings offer valuable insights for emergency evacuation strategies in pressurized buildings.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.72174189,72001095,and 72304123)。
文摘Pressurized buildings have emerged as a novel architectural solution to alleviate altitude illness in high-altitude regions.Unlike conventional buildings,evacuation from this kind of building has to experience a depressurization time,which results in air expansion and heat absorption,creating a dense fog and impairing sight within the buildings.Evacuation experiments were performed in a pressurized oxygen-supplement compartment to investigate the pedestrian motion properties.Based on the questionnaires,participants reported varying degrees of symptoms such as ear blockage,reduced environmental noise,and dizziness,which had a measurable impact on their mobility.We focus on the evacuation parameters through three basic building components:staircases,pressure transition cabins,and escape windows.As the visibility in the compartment decreases from high to low,the movement patterns of pedestrian shift from triangular to single-file with a significant decline in evacuation efficiency.It is found that there is a linear relationship between evacuation time and the number of evacuees through escape windows.The pressure transition cabin is a crucial evacuation route in emergencies,and evacuation time is recommended as the key metric for assessing its effectiveness.These findings offer valuable insights for emergency evacuation strategies in pressurized buildings.
