Abstract: In view of the technical difficulties of ancient building complexes in China, such as the unsystematic top-level design of the fire protection system and the lack of relevant fire protection design standards in planning and design, this paper conducts in-depth research on the fire spread law through numerical simulation based on the investigation of fire loads in more than 20 brick-wood structure ancient building courtyards. Combined with actual combat drills, according to the principle of 3 min fire fighting and rescue coverage, a method for dividing fire protection responsibility areas in large ancient building complexes is proposed. Finally, a three-level alarm architecture planning and design method for the fire alarm system of large ancient building complexes is proposed from three aspects: the planning and design concept of the fire alarm system, the design requirements of centers at all levels, and the selection of fire detectors.

Key words: ancient building complex, fire safety planning, mini fire station, fire prevention responsibility area, fire alarm system