Evacuation travel paths in virtual reality experiments for tunnel safety analysis |
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| Affiliation: | 1. Department of Fire Safety Engineering, Lund University, Lund, Sweden;2. Department of Psychology (Biological Psychology, Clinical Psychology, and Psychotherapy), University of Würzburg, Würzburg, Germany;3. VTplus, Würzburg, Germany;4. Department of Psychology, Chair of Clinical Psychology, and Psychotherapy, University of Regensburg, Regensburg, Germany;1. Department of Civil, Environmental, Planning, Building and Chemistry, Politecnico di Bari, Via Edoardo Orabona, 4, 70126 Bari, Italy;2. Department of Fire Safety Engineering, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden;1. Graduate School of Advanced Science and Engineering, Transdisciplinary Science and Engineering Program, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 7398529, Japan;2. Chiayi County Fire Bureau, No.6, E. Sec., Sianghe 2nd Rd., Chiayi County, Taibao City 61249, Taiwan;3. Faculty of Production Systems Engineering and Sciences, Komatsu University, Nu, 1-3, Shicho-machi, Komatsu City, Ishikawa 9230971, Japan;4. Department of Mechanical Engineering, National Institute of Technology, Ishikawa College, Kitachujo, Tsubata, Ishikawa 9290392, Japan;1. Ergonomics Laboratory – FMH - Lisbon University, Estrada da Costa – Cruz Quebrada, 1499-002, Portugal;2. CIAUD - Research Centre for Architecture, Urban Planning and Design, Rua Sá Nogueira, Alto da Ajuda, 1349-055 Lisboa, Portugal;3. CAPES Foundation, Ministry of Education of Brazil, Brasília - DF 70040-020, Brazil;4. ISCTE - Institute of Lisbon, Avenida das Forças Armadas, 1649-026 Lisbon, Portugal |
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| Abstract: | A case study on the analysis of evacuation travel paths in virtual reality (VR) tunnel fire experiments is presented to increase the understanding on evacuation behaviour. A novel method based on the study of the parametric equations of the occupants’ evacuation travel paths using vector operators inspired by functional analysis theory and the new concept of interaction areas (IAs) is introduced. IAs are presented and calculated in order to represent the distance of an occupant from a reference point (e.g., an emergency exit, the fire source, etc.) over time. The method allows comparisons of travel paths between experimental groups as well as comparisons with reference paths (e.g. user-defined paths, real-world paths, etc.). Results show that a common assumption employed by evacuation models (the use of a hypothetical path based on the shortest distance) may be an over-simplistic approximation of the evacuation paths. |
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| Keywords: | Fire evacuation Travel paths Tunnel safety Virtual reality Functional analysis |
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