Fire Emergency Evacuation for Large-Scale Public Buildings in 3d Gis

Abstract

High temperature and smoke poisoning during indoor fires can be fatal, yet traditional evacuation methods fail to account for the high temperature distribution and smoke flow. In this paper, we proposed a fire emergency crowd evacuation model for large-scale public building. Our model integrates fire numerical simulations, individual behavior, and a model to search for the shortest path. Navigation meshes for each floor are connected to form complex 3D multi-meshes for complex architectural interior spaces. The fire numerical simulation provides smoke diffusion flows and the temperature field distribution. The A* algorithm, with its heuristic social force model function for individual behavior, is applied to determine the safest and shortest evacuation route, avoiding risk hazard zones across different floors.